CN115126459A - Method and device for treating hydraulic fracture height - Google Patents
Method and device for treating hydraulic fracture height Download PDFInfo
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Abstract
The invention discloses a method and a device for treating hydraulic fracture height. Wherein, the method comprises the following steps: constructing a hydraulic fracture height influence index system, wherein the hydraulic fracture height influence index system at least comprises a plurality of hydraulic fracture height influence indexes; determining a fitting function of a plurality of hydraulic fracture height influence indicators with respect to fracture height; generating a hydraulic fracture height prediction model according to a fitting function of the hydraulic fracture height influence indexes on the fracture height; and determining the height of the hydraulic fracture in the target reservoir according to the hydraulic fracture height prediction model. The method solves the technical problem that the height of the hydraulic fracture in the high-dip-angle reservoir cannot be accurately and effectively predicted in the related technology.
Description
Technical Field
The invention relates to the technical field of hydraulic fracturing, in particular to a method and a device for treating the height of a hydraulic fracture.
Background
The hydraulic fracturing technique utilizes a surface high pressure pump to squeeze fracturing fluid with higher viscosity into an oil layer through a well bore. When the rate of injection of the fracturing fluid exceeds the absorption capacity of the reservoir, an overpressure is created in the reservoir at the bottom of the well, and when the pressure exceeds the fracture pressure of the reservoir rock near the bottom of the well, the reservoir will be forced open and create a fracture. And then squeezing fracturing fluid into the oil layer, and continuously expanding the cracks into the oil layer. After the carrier fluid with proppant (usually quartz sand) enters the fracture, it can continue to extend the fracture forward and prop the already-fractured fracture. And then injecting a displacement fluid, completely displacing the sand-carrying fluid in the shaft into the fracture, and supporting the fracture by using quartz sand. Finally, the injected high-viscosity fracturing fluid can be automatically degraded and discharged out of the shaft, one or more hydraulic fractures with different lengths, widths and heights are left in an oil layer, the seepage capability of the periphery of the shaft in the stratum is improved, the resistance of the fluid at the periphery of the shaft in the process of flowing into the shaft is reduced, and the oil and gas yield is obviously improved. The hydraulic fracture height has great influence on the effective reconstruction volume of the reservoir. Particularly, in a high-dip-angle oil reservoir stratum with complex construction conditions and various stress states, the hydraulic fracture form and a horizontal stratum have larger difference. The artificial crack height prediction is urgently needed to be developed, influence factors are clarified, the fracturing process and construction parameters are optimized to form the optimal crack, and the purpose of improving the yield of a single well is achieved.
At present, in the prior art, only the influence of the ratio of the net pressure in the fracture to the ground stress difference of the reservoir layer on the height of the hydraulic fracture is discussed, and factors such as the formation attitude, the well track and the like are not considered. In addition, the prior art does not discuss the position of the initial fracture on the shaft and the form of the initial fracture, and the three-dimensional fracture form under different perforation azimuth conditions cannot be counted. For example, the prior art discloses a method for predicting the hydraulic fracture height of tight sandstone, and particularly relates to the technical field of hydraulic fracturing. The method overcomes the defect that the existing research on the longitudinal expansion of the compact sandstone hydraulic fracturing fracture does not form quantitative standards capable of guiding the field fracturing practice. The method for predicting the hydraulic fracture height of the tight sandstone specifically comprises the following steps: establishing a hydraulic fracturing fracture expansion finite element model consisting of interlayer reservoirs; analyzing the influence factors of the longitudinal expansion of the tight sandstone gas reservoir hydraulic fracturing fracture based on a hydraulic fracturing expansion finite element model, and analyzing to obtain the corresponding data relation of the ratio of the net pressure in the fracture to the difference of the geostress of the reservoir layer and the thickness ratio of the reservoir layer of the critical separation, wherein the data relation is as follows: the smaller the ratio of the net pressure in the crack to the ground stress difference of the storage interlayer is, the weaker the expansion capability of the crack in the longitudinal direction is, and the smaller the height of the penetrated interlayer is; when the ratio of the net pressure in the fracture to the reservoir bed stress difference is less than 0.56, the propagation of the fracture is completely confined within the reservoir and cannot enter the barriers in the longitudinal direction.
Moreover, the above-mentioned prior art solutions have at least the following drawbacks:
(1) in the prior art, only the influence of the ratio of the net pressure in the fracture to the geostress difference of the reservoir on the height of the hydraulic fracture is researched based on an extended finite element model, and the influence of a well bore is not considered, so that different well bore tracks (a well inclination angle and a well phase angle) and construction parameters (fracturing fluid discharge and fracturing fluid viscosity) are not discussed.
(2) In the prior art, the expansion direction of the hydraulic fracture is fixed, and the fracture is considered to expand along the horizontal direction, so that the influence of the formation attitude (the formation trend and the formation inclination angle) in the high-inclination-angle oil reservoir on the height of the hydraulic fracture cannot be researched.
(3) The prior art does not discuss the position of an initial fracture on a shaft and the form of the initial fracture, and can not count the three-dimensional fracture form under different perforation azimuth conditions.
Therefore, the technical problem that the height of the hydraulic fracture in the high-dip-angle reservoir cannot be accurately and effectively predicted exists in the technical scheme in the related technology.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for processing hydraulic fracture height, which at least solve the technical problem that the hydraulic fracture height in a high-dip-angle reservoir cannot be accurately and effectively predicted in the related technology.
According to an aspect of an embodiment of the present invention, there is provided a method for treating hydraulic fracture height, including: constructing a hydraulic fracture height influence index system, wherein the hydraulic fracture height influence index system at least comprises a plurality of hydraulic fracture height influence indexes; determining a fit function of the plurality of hydraulic fracture height impact indicators with respect to fracture height; generating a hydraulic fracture height prediction model according to the fitting function of the hydraulic fracture height influence indexes on the fracture height; and determining the height of the hydraulic fracture in the target reservoir according to the hydraulic fracture height prediction model.
Optionally, constructing a hydraulic fracture height impact index system comprises: acquiring sample data of a target object, wherein the sample data comprises at least one of: stratum attitude, borehole trajectory, perforation orientation, construction parameters; determining a plurality of hydraulic fracture height influence indexes according to the sampling data; and obtaining the hydraulic fracture height influence index system according to the plurality of hydraulic fracture height influence indexes.
Optionally, determining a fitted function of the plurality of hydraulic fracture height impact indicators with respect to fracture height comprises: establishing a hydraulic fracture height three-dimensional calculation model; respectively carrying out single-factor analysis on the fracture heights on the multiple hydraulic fracture height influence indexes according to the hydraulic fracture height three-dimensional calculation model to obtain single-factor analysis results; and fitting according to the single-factor analysis result to obtain a fitting function of the multiple hydraulic fracture height influence indexes on the fracture height.
Optionally, the establishing of the hydraulic fracture height three-dimensional calculation model comprises: establishing a high-dip-angle stratum geomechanical model, wherein the high-dip-angle stratum geomechanical model at least comprises the following steps: a storage isolation layer and a shaft; judging the fracture initiation direction and the initial fracture form on the initial fracture shaft when the hydraulic fracture is initiated based on an expansion finite element method; when the crack enters a reservoir stratum, judging the crack propagation direction by adopting a maximum circumferential stress criterion, obtaining a single-step crack propagation length according to the stress intensity factor increment of each point on the front edge of the crack, and calculating the height of the crack after fracturing is finished according to an actual fracturing construction process; and obtaining the hydraulic fracture height three-dimensional calculation model based on the three-dimensional fracture form in the reservoir after fracturing.
Optionally, after determining the fitting function of the plurality of hydraulic fracture height influence indicators with respect to fracture height, further comprising: counting the indexes of the fitting function of the plurality of hydraulic fracture height influence indexes with respect to the fracture height; and normalizing the indexes of the fitting function of the hydraulic fracture height influence indexes relative to the fracture height, and determining the weights of the hydraulic fracture height influence indexes relative to the fracture height.
Optionally, generating the hydraulic fracture height prediction model according to the fitting function of the plurality of hydraulic fracture height influence indicators on the fracture height comprises: superposing the fitting functions of the multiple hydraulic fracture height influence indexes on the fracture height to construct a hydraulic fracture height function; linearizing the function of the hydraulic fracture height, and performing multiple linear fitting on the linearized function of the hydraulic fracture height to obtain a regression coefficient; and obtaining the hydraulic fracture height prediction model according to the regression coefficient and the function of the hydraulic fracture height.
Optionally, the plurality of hydraulic fracture height impact indicators includes at least: the method comprises the following steps of formation inclination angle, formation trend, well inclination angle, well azimuth angle, perforation direction, fracturing fluid viscosity, fracturing fluid discharge capacity, storage cover layer stress difference and vertical-horizontal maximum main stress difference.
According to another aspect of the embodiments of the present invention, there is also provided a hydraulic fracture height processing apparatus, including: the hydraulic fracture height influence index system comprises a construction module, a data acquisition module and a data processing module, wherein the construction module is used for constructing a hydraulic fracture height influence index system, and the hydraulic fracture height influence index system at least comprises a plurality of hydraulic fracture height influence indexes; a first determination module for determining a fit function of the plurality of hydraulic fracture height impact indicators with respect to fracture height; the generating module is used for generating a hydraulic fracture height prediction model according to a fitting function of the hydraulic fracture height influence indexes on the fracture height; and the second determination module is used for determining the hydraulic fracture height in the target reservoir according to the hydraulic fracture height prediction model.
According to another aspect of the embodiment of the present invention, there is also provided a computer-readable storage medium, which includes a stored program, wherein when the program runs, the apparatus on which the computer-readable storage medium is located is controlled to execute the hydraulic fracture height processing method described in any one of the above.
According to another aspect of the embodiments of the present invention, there is also provided a processor for executing a program, wherein the program is executed to execute the hydraulic fracture height processing method described in any one of the above.
In the embodiment of the invention, a hydraulic fracture height influence index system is constructed, wherein the hydraulic fracture height influence index system at least comprises a plurality of hydraulic fracture height influence indexes; determining a fitting function of a plurality of hydraulic fracture height influence indicators with respect to fracture height; generating a hydraulic fracture height prediction model according to a fitting function of the hydraulic fracture height influence indexes on the fracture height; the method comprises the steps of determining the height of the hydraulic fracture in a target reservoir according to a hydraulic fracture height prediction model, generating a hydraulic fracture height prediction model through a fitting function of a plurality of hydraulic fracture height influence indexes in a hydraulic fracture height influence index system on the height of the fracture, calculating the height of the hydraulic fracture in the target reservoir by using the hydraulic fracture height prediction model, and achieving the purpose of rapidly and accurately predicting the height of the hydraulic fracture in the target reservoir, so that the technical effect of efficiently predicting the effective height of the hydraulic fracture in the high-dip-angle reservoir under various working conditions is achieved, and the technical problem that the height of the hydraulic fracture in the high-dip-angle reservoir cannot be accurately and effectively predicted in the related technology is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a method of treating hydraulic fracture height according to an embodiment of the present disclosure;
FIG. 2 is a flow diagram of a hydraulic fracture height treatment method according to an alternative embodiment of the present invention;
FIG. 3 is a schematic diagram of a three-dimensional computational model of hydraulic fracture height according to an alternative embodiment of the present invention;
FIG. 4 is a schematic illustration of an initial fracture morphology on a wellbore and perforation profile in accordance with an alternative embodiment of the present invention;
FIG. 5 is a schematic illustration of a three-dimensional fracture morphology in a reservoir after completion of fracturing according to an alternative embodiment of the invention;
FIG. 6 is a schematic illustration of the height of fractures within a reservoir for each formation dip angle according to an alternative embodiment of the present invention;
FIG. 7 is a schematic illustration of the height of a fracture within a reservoir for each formation strike in accordance with an alternative embodiment of the invention;
FIG. 8 is a schematic illustration of the height of a fracture within a reservoir corresponding to each well angle in accordance with an alternative embodiment of the present invention;
FIG. 9 is a schematic illustration of the height of a fracture in a reservoir at each well azimuth according to an alternative embodiment of the present invention;
FIG. 10 is a schematic illustration of the height of a fracture within a reservoir for each perforation orientation, in accordance with an alternative embodiment of the present invention;
FIG. 11 is a schematic illustration of the height of fractures within a reservoir corresponding to each vertical/horizontal maximum principal stress difference in accordance with an alternative embodiment of the present invention;
FIG. 12 is a schematic illustration of the heights of fractures within a reservoir corresponding to stress differences between layers in accordance with an alternative embodiment of the present invention;
FIG. 13 is a schematic illustration of the height of fractures within a reservoir for each displacement of fracturing fluid in accordance with an alternative embodiment of the present invention;
FIG. 14 is a schematic illustration of the height of fractures within a reservoir for each viscosity of the fracturing fluid in accordance with an alternative embodiment of the present invention;
FIG. 15 is a graphical illustration of statistical weights for various parameters in accordance with an alternative embodiment of the present invention;
FIG. 16 is a schematic view of a hydraulic fracture height treatment apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
In accordance with an embodiment of the present invention, there is provided an embodiment of a method for hydraulic fracture height treatment, it being noted that the steps illustrated in the flow chart of the accompanying figures may be carried out in a computer system such as a set of computer executable instructions, and that while a logical order is illustrated in the flow chart, in some cases, the steps illustrated or described may be carried out in an order different than that presented herein.
Fig. 1 is a flow chart of a hydraulic fracture height processing method according to an embodiment of the present invention, which includes the following steps, as shown in fig. 1:
step S102, constructing a hydraulic fracture height influence index system, wherein the hydraulic fracture height influence index system at least comprises a plurality of hydraulic fracture height influence indexes;
step S104, determining a fitting function of a plurality of hydraulic fracture height influence indexes with respect to the fracture height;
step S106, generating a hydraulic fracture height prediction model according to a fitting function of the hydraulic fracture height influence indexes on the fracture height;
and S108, determining the hydraulic fracture height in the target reservoir according to the hydraulic fracture height prediction model.
It should be noted that the target reservoir includes, but is not limited to, a high dip angle reservoir and the like. Optionally, the implementation steps can be adopted to predict the height of the hydraulic fracture in the high-dip-angle reservoir under each working condition.
Through the steps, a hydraulic fracture height prediction model can be generated through a fitting function of a plurality of hydraulic fracture height influence indexes in a hydraulic fracture height influence index system on the fracture height, the hydraulic fracture height in the target storage layer is calculated by using the hydraulic fracture height prediction model, and the purpose of rapidly and accurately predicting the hydraulic fracture height in the target storage layer is achieved, so that the technical effect of efficiently predicting the effective height of the hydraulic fracture in the high-dip-angle storage layer under each working condition is achieved, and the technical problem that the hydraulic fracture height in the high-dip-angle storage layer cannot be accurately and effectively predicted in the related technology is solved.
Optionally, constructing a hydraulic fracture height impact indicator system comprises: acquiring sample data of a target object, wherein the sample data comprises at least one of the following: stratum attitude, borehole trajectory, perforation orientation, construction parameters; determining a plurality of hydraulic fracture height influence indexes according to the sampling data; and obtaining a hydraulic fracture height influence index system according to the plurality of hydraulic fracture height influence indexes.
Such sampled data may include, but is not limited to, formation pay, wellbore trajectory, perforation orientation, construction parameters, etc. In an optional implementation manner, sampling data such as a stratum attitude, a borehole trajectory, a perforation azimuth, construction parameters and the like of a target object may be obtained first, and then a plurality of hydraulic fracture height influence indexes are further determined according to the sampling data, wherein the hydraulic fracture height influence indexes include but are not limited to a stratum inclination angle, a stratum trend, a well inclination angle, a well azimuth angle, a perforation azimuth, a fracturing fluid viscosity, a fracturing fluid discharge amount, a reservoir layer stress difference, a vertical-horizontal maximum principal stress difference and the like, and then a hydraulic fracture height influence index system is constructed according to the hydraulic fracture height influence indexes. Through the embodiment, various influence factors related to the hydraulic fracture height can be fully considered, so that the hydraulic fracture height can be calculated more accurately subsequently.
Optionally, determining a fit function of the plurality of hydraulic fracture height impact indicators with respect to fracture height comprises: establishing a hydraulic fracture height three-dimensional calculation model; respectively carrying out single-factor analysis on the fracture heights on a plurality of hydraulic fracture height influence indexes according to the hydraulic fracture height three-dimensional calculation model to obtain single-factor analysis results; and fitting according to the single-factor analysis result to obtain a fitting function of the multiple hydraulic fracture height influence indexes on the fracture height.
Because the hydraulic fracture height influence index is used as the influence factor of the hydraulic fracture height, in an optional implementation manner, the single-factor analysis about the fracture height can be performed on the multiple hydraulic fracture height influence indexes by using the established hydraulic fracture height three-dimensional calculation model, wherein the single-factor analysis is to analyze the change rule of the fracture height along with a certain random variable under the condition that other random variables are customized, and then perform fitting processing on multiple single-factor analysis results to obtain the fitting function of the multiple hydraulic fracture height influence indexes about the fracture height. In addition, after the hydraulic fracture height three-dimensional calculation model is established, the method further comprises the following steps: the method includes the steps of counting a plurality of hydraulic fracture height influence indexes and corresponding fracture heights, for example, counting the height of the reservoir internal fracture corresponding to each stratum inclination angle, the height of the reservoir internal fracture corresponding to each stratum trend, the height of the reservoir internal fracture corresponding to each well inclination angle, counting the height of the reservoir internal fracture corresponding to each well azimuth angle when the well inclination angle is 90 degrees, counting the height of the reservoir internal fracture corresponding to each perforation azimuth, counting the height of the reservoir internal fracture corresponding to each vertical/horizontal maximum main stress difference, counting the height of the reservoir internal fracture corresponding to each inter-layer stress difference, counting the height of the reservoir internal fracture corresponding to each fracturing fluid discharge, counting the height of the reservoir internal fracture corresponding to each fracturing fluid viscosity, and the like.
Through the embodiment, the influence of each hydraulic fracture height influence index on the fracture height can be accurately mastered, the change rule of the fracture height under a single influence factor can be known, and a fitting function of each influence factor on the fracture height can be fitted.
Optionally, establishing a three-dimensional calculation model of hydraulic fracture height comprises: establishing a high-dip-angle stratum geomechanical model, wherein the high-dip-angle stratum geomechanical model at least comprises the following steps: a storage interlayer and a shaft; judging the fracture initiation direction and the initial fracture form on the initial fracture shaft when the hydraulic fracture is initiated based on an expansion finite element method; when the crack enters a reservoir, judging the crack propagation direction by adopting a maximum circumferential stress criterion, obtaining a single-step crack propagation length according to the stress intensity factor increment of each point of the front edge of the crack, and calculating the height of the crack after fracturing according to an actual fracturing construction process; and obtaining a hydraulic fracture height three-dimensional calculation model based on the three-dimensional fracture form in the reservoir after fracturing.
In specific implementation, the geomechanical model of the high dip angle stratum includes, but is not limited to, reservoir zones, wellbores, boundary conditions, post-ground stress balance distributions, and the like, wherein the reservoir zones include reservoirs and zones. In an optional embodiment, after the geomechanical model of the high-dip-angle stratum is established, the fracture initiation azimuth and the fracture initiation form on the initial fracture shaft can be judged when the hydraulic fracture is initiated based on an extension finite element method; when the crack enters a reservoir stratum, the crack propagation direction is judged by adopting a maximum circumferential stress criterion, the single-step crack propagation length is obtained according to the stress intensity factor increment of each point at the front edge of the crack, and the height of the crack after fracturing is finished is calculated according to the actual fracturing construction process, so that a hydraulic crack height three-dimensional calculation model is formed on the basis of the three-dimensional crack form in the reservoir stratum after fracturing is finished. Through the implementation mode, the position of the initial fracture on the shaft, the form of the initial fracture and the three-dimensional fracture form under different perforation orientations are fully considered, so that the established three-dimensional calculation model of the height of the hydraulic fracture can truly reflect the state of the height of the hydraulic fracture in the high-dip-angle reservoir.
Optionally, after determining a fitting function of the plurality of hydraulic fracture height influence indicators with respect to fracture height, further comprising: counting indexes of a fitting function of a plurality of hydraulic fracture height influence indexes on the fracture height; and normalizing the indexes of the fitting functions of the hydraulic fracture height influence indexes on the fracture height, and determining the weights of the hydraulic fracture height influence indexes on the fracture height.
In an alternative embodiment, after determining the fitting function of the plurality of hydraulic fracture height influence indicators with respect to the fracture height, the indexes of the fitting function of the plurality of hydraulic fracture height influence indicators with respect to the fracture height may be counted and normalized to obtain the weights of the plurality of hydraulic fracture height influence indicators with respect to the fracture height. Through the embodiment, the weight of each influence factor can be quantized, and the influence degree of a plurality of hydraulic fracture height influence indexes on the fracture height can be obtained.
Optionally, generating the hydraulic fracture height prediction model according to a fitting function of the plurality of hydraulic fracture height influence indicators with respect to the fracture height comprises: superposing a fitting function of a plurality of hydraulic fracture height influence indexes on the fracture height to construct a functional function of the hydraulic fracture height; linearizing a function of the hydraulic fracture height, and performing multiple linear fitting on the linearized function of the hydraulic fracture height to obtain a regression coefficient; and obtaining a hydraulic fracture height prediction model according to the regression coefficient and the hydraulic fracture height function.
In an optional implementation manner, a function of the hydraulic fracture height can be constructed by superposing a plurality of fitting functions of hydraulic fracture height influence indexes on the fracture height, then the function of the hydraulic fracture height is linearized, and multiple linear fitting is performed on the linearized function of the hydraulic fracture height to obtain a regression coefficient, and then the regression coefficient is substituted for the function of the hydraulic fracture height to obtain a hydraulic fracture height prediction model. According to the embodiment, the function line of the hydraulic fracture height can be used for carrying out multivariate linear fitting to obtain the hydraulic fracture height prediction model, and the obtained hydraulic fracture height prediction model is used for determining the hydraulic fracture height, so that the accuracy of predicting the hydraulic fracture height is improved.
Optionally, the plurality of hydraulic fracture height impact indicators includes at least: the method comprises the following steps of formation inclination angle, formation trend, well inclination angle, well azimuth angle, perforation direction, fracturing fluid viscosity, fracturing fluid discharge capacity, storage cover layer stress difference and vertical-horizontal maximum main stress difference.
The hydraulic fracture height influence indexes include but are not limited to stratum inclination angles, stratum strike directions, well inclination angles, well azimuth angles, perforation orientations, fracturing fluid viscosity, fracturing fluid discharge capacity, reservoir stratum stress differences and vertical-horizontal maximum main stress differences. In an alternative embodiment, the plurality of hydraulic fracture height influence indicators are formation dip, formation strike, well dip, well azimuth, perforation azimuth, fracturing fluid viscosity, fracturing fluid displacement, reservoir cap layer stress difference, and vertical-horizontal maximum principal stress difference.
An alternative embodiment of the invention is described in detail below.
Fig. 2 is a flow chart of a hydraulic fracture height treatment method according to an alternative embodiment of the present invention, as shown in fig. 2, comprising the steps of:
step 1, constructing a hydraulic fracture height influence index system: and determining the fracture height influence index according to the stratum attitude, the borehole track, the perforation direction and the construction parameters. The hydraulic fracture height influence indexes mainly comprise: the method comprises the following steps of stratum inclination angle, stratum trend, well inclination angle, well azimuth angle, perforation azimuth, fracturing fluid viscosity, fracturing fluid discharge capacity, storage cover layer stress difference and vertical-horizontal maximum main stress difference.
And 2, establishing a three-dimensional calculation model of the height of the high-dip-angle stratum hydraulic fracture.
and 2.1, establishing a high-dip-angle stratum geomechanical model, wherein storage separation layers, shaft positions and boundary conditions in the model are shown in a figure 3a, and distribution after ground stress balance is shown in a figure 3 b.
And 2.2, judging the fracture initiation direction and the initial fracture morphology on the initial fracture shaft when the hydraulic fracture is initiated based on the finite element expansion method, wherein the initial fracture morphology on the shaft and the perforation section is shown in FIG. 4.
And 2.3, when the crack enters a reservoir stratum, judging the crack propagation direction by adopting a maximum circumferential stress criterion, obtaining a single-step crack propagation length according to the increase of stress intensity factors of all points on the front edge of the crack, and calculating the height of the crack after fracturing is finished according to an actual fracturing construction process, wherein the three-dimensional crack form (reservoir stratum hiding) in the reservoir stratum after fracturing is finished is shown in fig. 5.
And 3, according to the hydraulic fracture height three-dimensional calculation model established in the step 2, counting the influence of each influence factor on the fracture height, carrying out single factor analysis, and fitting a function of each influence factor on the fracture height.
Step 3 as above includes the following steps:
3.1, according to the hydraulic fracture height three-dimensional calculation model established in the step 2, performing single-factor analysis on the fracture height of each influence index in the fracture height influence index system established in the step 1, namely analyzing the change rule of the fracture height along with a certain random variable under the condition that other random variables are customized;
in addition, the influence of each influence factor on the fracture height can be counted, for example, the height of the fracture in the reservoir corresponding to each stratigraphic dip is counted as shown in fig. 6; calculating the height of the fractures in the reservoir corresponding to the strike of each stratum as shown in figure 7; calculating the height of the fractures in the reservoir corresponding to each well inclination angle as shown in figure 8; when the well inclination angle is 90 degrees, counting the height of the fractures in the reservoir corresponding to each well azimuth angle as shown in figure 9; the height of the fractures in the reservoir corresponding to each perforation position is counted and is shown in figure 10; calculating the height of the reservoir internal fracture corresponding to each vertical/horizontal maximum main stress difference as shown in figure 11; the height of the fractures in the reservoir corresponding to the stress difference between the layers is counted and is shown in figure 12; the height of the fractures in the reservoir corresponding to each fracturing fluid displacement is counted and is shown in figure 13; the height of the fractures in the reservoir corresponding to the viscosity of each fracturing fluid is counted and shown in figure 14.
And 3.2, performing numerical fitting by using an exponential function according to the single-factor analysis result of the fracture height in the step 2.1 to obtain a fitting function of each influence factor on the fracture height:
fitting fracture height H and formation dip theta dip The relationship of (c) is:
fitting fracture height H and formation strike theta str The relationship of (1) is:
fitting fracture height H and well inclination angle theta dev The relationship of (1) is:
fitting fracture height H and well azimuth
The relationship of (1) is:
the relationship between the fitting fracture height H and the perforation azimuth alpha is as follows: h14.218 e -8E-04α ；
Fitting crack height H and vertical/horizontal maximum principal stress difference sigma v-h The relationship of (1) is:
fitting the interlayer stress difference, and counting the crack height H and the interlayer stress difference sigma int The relationship of (1) is:
the relationship between the fitting fracture height H and the fracturing fluid discharge capacity Q is as follows: h-14.218 e -0.009Q ；
The relationship between the fitting fracture height H and the viscosity v of the fracturing fluid is as follows: h-14.132 e (-0.005v) 。
And 4, quantifying the weight of each influence factor.
step 4.1, based on the fitting functions in step 2.1, the indexes of the fitting functions of the influencing factors about the height of the crack are counted, and the indexes are shown in table 1:
TABLE 1 index of the fitting function of the influencing factors with respect to fracture height
| Influencing factors | Index of fitting function |
| Formation dip angle | 0.1878 |
| Course of the stratum | -0.085 |
| Well angle | 0.0656 |
| Well azimuth | -0.013 |
| Viscosity of fracturing fluid | -0.009 |
| Discharge capacity of fracturing fluid | -0.005 |
| Orientation of perforation | -8E-04 |
| Maximum vertical/horizontal principal stress difference | 1E-05 |
| Difference in stress between layers | 1E-05 |
And 4.2, carrying out exponential normalization processing on each fitting function, and quantifying the weight of each influence factor.
And 5, building a function of the hydraulic fracture height by superposing the fitting functions of the influence factors in the step 3.2 on the fracture height to obtain an integral display expression of the hydraulic fracture height on the influence factors.
Wherein A is 1 ～A 10 Are regression coefficients.
And 6, carrying out multivariate linear fitting on the functional function line of the hydraulic fracture height, and predicting the fracture height.
step 6.1, linearizing the function of the hydraulic fracture height in the step 5, and enabling
6.2, performing multi-element linear fitting on the linearized function by using matlab; wherein the input matrix is column E of Table 2 1 ～E 9 The output matrix is column H in table 2.
TABLE 2 multivariate Linear fitting matrix
| E 1 | E 2 | E 3 | E 4 | E 5 | E 6 | E 7 | E 8 | E 9 | H |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 14.132 |
| 1829.870 | 0.148 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 14.132 |
| 1829.870 | 0.022 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 11.449 |
| 1829.870 | 0.003 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 10.681 |
| 1829.870 | 0.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 10.178 |
| 42.777 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 9.796 |
| 279.779 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 11.875 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 14.132 |
| 11968.099 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 16.347 |
| 78276.288 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 23.356 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 14.132 |
| 1829.870 | 1.000 | 4.375 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 14.821 |
| 1829.870 | 1.000 | 19.144 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 16.132 |
| 1829.870 | 1.000 | 83.764 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 17.247 |
| 1829.870 | 1.000 | 366.501 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 18.304 |
| 1829.870 | 1.000 | 1.188 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 18.304 |
| 1829.870 | 1.000 | 1.188 | 0.746 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 18.211 |
| 1829.870 | 1.000 | 1.188 | 0.557 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 17.926 |
| 1829.870 | 1.000 | 1.188 | 0.416 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 17.620 |
| 1829.870 | 1.000 | 1.188 | 0.310 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 17.409 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 14.132 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.111 | 1.000 | 1.000 | 14.200 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.234 | 1.000 | 1.000 | 14.330 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.370 | 1.000 | 1.000 | 14.135 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.522 | 1.000 | 1.000 | 14.130 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.690 | 1.000 | 1.000 | 14.132 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.878 | 1.000 | 1.000 | 14.133 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 2.700 | 1.000 | 1.000 | 1.000 | 1.000 | 14.132 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 3.200 | 1.000 | 1.000 | 1.000 | 1.000 | 14.137 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 3.800 | 1.000 | 1.000 | 1.000 | 1.000 | 14.139 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 4.300 | 1.000 | 1.000 | 1.000 | 1.000 | 14.143 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 4.800 | 1.000 | 1.000 | 1.000 | 1.000 | 14.144 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 200 | 1.000 | 1.000 | 1.000 | 14.012 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 150 | 1.000 | 1.000 | 1.000 | 14.032 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 100 | 1.000 | 1.000 | 1.000 | 14.073 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 50 | 1.000 | 1.000 | 1.000 | 14.103 |
| 1829.870 | 1.000 | 1.000 | 1.000 | 1.000 | 30 | 1.000 | 1.000 | 1.000 | 14.131 |
And 6.3, the fitting result is shown in a table 3, and the regression coefficient is brought back to the function of the hydraulic fracture height in the step 5.1, so that the hydraulic fracture height prediction model is obtained:
TABLE 3 coefficient fitting results
| Regression coefficient | Numerical value | Regression coefficient | Numerical value |
| A 1 | 1.2358 | A 6 | 4.7523 |
| A 2 | 3.0677 | A 7 | -0.5051 |
| A 3 | 1.1944 | A 8 | -11339.6 |
| A 4 | -5.9447 | A 9 | 11144.2 |
| A 5 | 5.9014 | A 10 | 18837.6 |
It should be noted that, in the above alternative embodiment, the influence of each influencing factor on the fracture height may be counted, including: and fitting a fitting function of each influence factor on the fracture height by using factors such as a stratum inclination angle, a stratum trend, a well inclination angle, a well azimuth angle, a perforation azimuth, a storage cover layer stress difference, a vertical-horizontal maximum main stress difference and the like, and finally obtaining a hydraulic fracture height prediction model through multi-factor linear regression. The hydraulic fracture height prediction model is suitable for high-dip-angle reservoirs, and can realize high-efficiency prediction of hydraulic fracture height of the high-dip-angle reservoirs under various working conditions.
Example 2
According to another aspect of the embodiments of the present invention, there is also provided a hydraulic fracture height processing apparatus, and fig. 16 is a schematic view of the hydraulic fracture height processing apparatus according to the embodiments of the present invention, as shown in fig. 16, the hydraulic fracture height processing apparatus including: a construction module 1602, a first determination module 1604, a generation module 1606, and a second determination module 1608. The hydraulic fracture height processing apparatus will be described in detail below.
A construction module 1602, configured to construct a hydraulic fracture height influence index system, where the hydraulic fracture height influence index system at least includes a plurality of hydraulic fracture height influence indexes; a first determining module 1604 coupled to the constructing module 1602 for determining a fitting function of a plurality of hydraulic fracture height influence indicators with respect to fracture height; a generating module 1606, connected to the first determining module 1604, for generating a hydraulic fracture height prediction model according to a fitting function of the plurality of hydraulic fracture height influence indicators with respect to fracture height; a second determining module 1608, connected to the generating module 1606, is configured to determine the hydraulic fracture height in the target reservoir according to the hydraulic fracture height prediction model.
In the embodiment, the hydraulic fracture height processing device can generate the hydraulic fracture height prediction model through the fitting function of the multiple hydraulic fracture height influence indexes in the hydraulic fracture height influence index system on the fracture height, and calculate the hydraulic fracture height in the target reservoir by using the hydraulic fracture height prediction model, so that the purpose of rapidly and accurately predicting the hydraulic fracture height in the target reservoir is achieved, the technical effect of efficiently predicting the effective height of the hydraulic fracture in the high-dip-angle reservoir under various working conditions is achieved, and the technical problem that the hydraulic fracture height in the high-dip-angle reservoir cannot be accurately and effectively predicted in the related technology is solved.
It should be noted that the above modules may be implemented by software or hardware, for example, for the latter, the following may be implemented: the modules can be located in the same processor; and/or the modules are located in different processors in any combination.
It should be noted here that the building module 1602, the first determining module 1604, the generating module 1606 and the second determining module 1608 correspond to steps S102 to S108 in embodiment 1, and the modules are the same as the examples and application scenarios implemented by the corresponding steps, but are not limited to what is disclosed in embodiment 1. It should be noted that the modules described above as part of an apparatus may be implemented in a computer system such as a set of computer-executable instructions.
Optionally, the building module 1602 includes: an acquisition unit configured to acquire sample data of a target object, wherein the sample data includes at least one of: stratum attitude, borehole trajectory, perforation orientation, construction parameters; the determining unit is used for determining a plurality of hydraulic fracture height influence indexes according to the sampling data; the first obtaining unit is used for obtaining a hydraulic fracture height influence index system according to the hydraulic fracture height influence indexes.
Optionally, the first determining module 1604 includes: the building unit is used for building a hydraulic fracture height three-dimensional calculation model; the analysis unit is used for respectively carrying out single-factor analysis on the fracture heights on the multiple hydraulic fracture height influence indexes according to the hydraulic fracture height three-dimensional calculation model to obtain a single-factor analysis result; and the fitting unit is used for performing fitting treatment according to the single-factor analysis result to obtain a fitting function of the multiple hydraulic fracture height influence indexes on the fracture height.
Optionally, the establishing unit includes: the building subunit is used for building a high-dip-angle stratum geomechanical model, and the high-dip-angle stratum geomechanical model at least comprises the following components: a storage isolation layer and a shaft; the first processing subunit is used for judging the fracture initiation direction and the initial fracture form on the initial fracture shaft when the hydraulic fracture is initiated based on an expansion finite element method; the second processing subunit is used for judging the crack propagation direction by adopting a maximum circumferential stress criterion when the crack enters the reservoir, obtaining the single-step crack propagation length according to the stress intensity factor increment of each point on the front edge of the crack, and calculating the height of the crack after fracturing is finished according to the actual fracturing construction process; and the third processing subunit is used for obtaining a hydraulic fracture height three-dimensional calculation model based on the three-dimensional fracture form in the reservoir after fracturing is completed.
Optionally, the apparatus further comprises: the statistical module is used for counting indexes of the fitting functions of the hydraulic fracture height influence indexes relative to the fracture height after determining the fitting functions of the hydraulic fracture height influence indexes relative to the fracture height; and the third determination module is used for carrying out normalization processing on the indexes of the fitting function of the plurality of hydraulic fracture height influence indexes with respect to the fracture height and determining the weights of the plurality of hydraulic fracture height influence indexes with respect to the fracture height.
Optionally, the generating module 1606 includes: the construction unit is used for superposing a fitting function of a plurality of hydraulic fracture height influence indexes on the fracture height and constructing a function of the hydraulic fracture height; the processing unit is used for linearizing the function of the hydraulic fracture height and performing multi-linear fitting on the linearized function of the hydraulic fracture height to obtain a regression coefficient; and the second obtaining unit is used for obtaining a hydraulic fracture height prediction model according to the regression coefficient and the hydraulic fracture height function.
Optionally, the plurality of hydraulic fracture height influence indicators at least include: the method comprises the following steps of stratum inclination angle, stratum trend, well inclination angle, well azimuth angle, perforation azimuth, fracturing fluid viscosity, fracturing fluid discharge capacity, storage cover layer stress difference and vertical-horizontal maximum main stress difference.
Example 3
According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein when the program is executed, the apparatus where the computer-readable storage medium is located is controlled to perform the hydraulic fracture height treatment method of any one of the above.
Optionally, in this embodiment, the computer-readable storage medium may be located in any one of a group of computer terminals in a computer network and/or in any one of a group of mobile terminals, and the computer-readable storage medium includes a stored program.
Optionally, the program when executed controls an apparatus in which the computer-readable storage medium is located to perform the following functions: constructing a hydraulic fracture height influence index system, wherein the hydraulic fracture height influence index system at least comprises a plurality of hydraulic fracture height influence indexes; determining a fitting function of a plurality of hydraulic fracture height influence indicators with respect to fracture height; generating a hydraulic fracture height prediction model according to a fitting function of the hydraulic fracture height influence indexes on the fracture height; and determining the height of the hydraulic fracture in the target reservoir according to the hydraulic fracture height prediction model.
Example 4
According to another aspect of the embodiments of the present invention, there is also provided a processor for executing a program, wherein the program is executed to perform the method for treating hydraulic fracture height as described above.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein the processor executes the program and realizes the following steps: constructing a hydraulic fracture height influence index system, wherein the hydraulic fracture height influence index system at least comprises a plurality of hydraulic fracture height influence indexes; determining a fitting function of a plurality of hydraulic fracture height influence indicators with respect to fracture height; generating a hydraulic fracture height prediction model according to a fitting function of the hydraulic fracture height influence indexes on the fracture height; and determining the height of the hydraulic fracture in the target reservoir according to the hydraulic fracture height prediction model.
The invention also provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device: constructing a hydraulic fracture height influence index system, wherein the hydraulic fracture height influence index system at least comprises a plurality of hydraulic fracture height influence indexes; determining a fitting function of a plurality of hydraulic fracture height influence indicators with respect to fracture height; generating a hydraulic fracture height prediction model according to a fitting function of the hydraulic fracture height influence indexes on the fracture height; and determining the height of the hydraulic fracture in the target reservoir according to the hydraulic fracture height prediction model.
The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technical content can be implemented in other manners. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be an indirect coupling or communication connection through some interfaces, units or modules, and may be electrical or in other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method of treating hydraulic fracture height, comprising:
constructing a hydraulic fracture height influence index system, wherein the hydraulic fracture height influence index system at least comprises a plurality of hydraulic fracture height influence indexes;
determining a fit function of the plurality of hydraulic fracture height impact indicators with respect to fracture height;
generating a hydraulic fracture height prediction model according to a fitting function of the hydraulic fracture height influence indexes on the fracture height;
and determining the height of the hydraulic fracture in the target reservoir according to the hydraulic fracture height prediction model.
2. The method of claim 1, wherein constructing a hydraulic fracture height impact indicator system comprises:
acquiring sample data of a target object, wherein the sample data comprises at least one of: stratum attitude, borehole trajectory, perforation orientation, construction parameters;
determining a plurality of hydraulic fracture height influence indexes according to the sampling data;
and obtaining the hydraulic fracture height influence index system according to the plurality of hydraulic fracture height influence indexes.
3. The method of claim 1, wherein determining a fit function of the plurality of hydraulic fracture height impact indicators with respect to fracture height comprises:
establishing a hydraulic fracture height three-dimensional calculation model;
respectively carrying out single-factor analysis on the fracture heights on the multiple hydraulic fracture height influence indexes according to the hydraulic fracture height three-dimensional calculation model to obtain single-factor analysis results;
and fitting according to the single-factor analysis result to obtain a fitting function of the multiple hydraulic fracture height influence indexes with respect to the fracture height.
4. The method of claim 3, wherein establishing a three-dimensional computational model of hydraulic fracture height comprises:
establishing a high-dip-angle stratum geomechanical model, wherein the high-dip-angle stratum geomechanical model at least comprises the following steps: a storage isolation layer and a shaft;
judging the fracture initiation direction and the initial fracture form on the initial fracture shaft when the hydraulic fracture is initiated based on an expansion finite element method;
when the crack enters a reservoir, judging the crack propagation direction by adopting a maximum circumferential stress criterion, obtaining a single-step crack propagation length according to the stress intensity factor increment of each point of the front edge of the crack, and calculating the height of the crack after fracturing according to an actual fracturing construction process;
and obtaining the hydraulic fracture height three-dimensional calculation model based on the three-dimensional fracture form in the reservoir after fracturing.
5. The method of claim 1, after determining the fit function of the plurality of hydraulic fracture height impact indicators with respect to fracture height, further comprising:
counting the indexes of the fitting function of the plurality of hydraulic fracture height influence indexes with respect to the fracture height;
and normalizing the indexes of the fitting function of the hydraulic fracture height influence indexes relative to the fracture height, and determining the weights of the hydraulic fracture height influence indexes relative to the fracture height.
6. The method of claim 1, wherein generating a hydraulic fracture height prediction model as a function of the fit function of the plurality of hydraulic fracture height impact indicators with respect to fracture height comprises:
superposing the fitting functions of the multiple hydraulic fracture height influence indexes on the fracture height to construct a hydraulic fracture height function;
linearizing the function of the hydraulic fracture height, and performing multiple linear fitting on the linearized function of the hydraulic fracture height to obtain a regression coefficient;
and obtaining the hydraulic fracture height prediction model according to the regression coefficient and the hydraulic fracture height function.
7. The method of any one of claims 1 to 6, wherein the plurality of hydraulic fracture height impact indicators include at least: the method comprises the following steps of stratum inclination angle, stratum trend, well inclination angle, well azimuth angle, perforation azimuth, fracturing fluid viscosity, fracturing fluid discharge capacity, storage cover layer stress difference and vertical-horizontal maximum main stress difference.
8. A hydraulic fracture height treatment apparatus, comprising:
the hydraulic fracture height influence index system at least comprises a plurality of hydraulic fracture height influence indexes;
a first determination module for determining a fit function of the plurality of hydraulic fracture height impact indicators with respect to fracture height;
the generating module is used for generating a hydraulic fracture height prediction model according to a fitting function of the hydraulic fracture height influence indexes on the fracture height;
and the second determination module is used for determining the hydraulic fracture height in the target reservoir according to the hydraulic fracture height prediction model.
9. A computer-readable storage medium, comprising a stored program, wherein the program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform a hydraulic fracture height treatment method according to any one of claims 1 to 7.
10. A processor for running a program, wherein the program is run to perform the method of hydraulic fracture height treatment of any of claims 1 to 7.
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