CN105913332B - Method and device for determining dense gas reservoir development index - Google Patents
Method and device for determining dense gas reservoir development index Download PDFInfo
- Publication number
- CN105913332B CN105913332B CN201610256757.6A CN201610256757A CN105913332B CN 105913332 B CN105913332 B CN 105913332B CN 201610256757 A CN201610256757 A CN 201610256757A CN 105913332 B CN105913332 B CN 105913332B
- Authority
- CN
- China
- Prior art keywords
- well
- producing region
- index
- individual well
- individual
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/02—Agriculture; Fishing; Forestry; Mining
Landscapes
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Human Resources & Organizations (AREA)
- Marketing (AREA)
- Marine Sciences & Fisheries (AREA)
- Mining & Mineral Resources (AREA)
- Agronomy & Crop Science (AREA)
- Health & Medical Sciences (AREA)
- Economics (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Husbandry (AREA)
- Primary Health Care (AREA)
- Strategic Management (AREA)
- Tourism & Hospitality (AREA)
- Physics & Mathematics (AREA)
- General Business, Economics & Management (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The application provides a method and a device for determining a dense gas reservoir development index, wherein the method comprises the following steps: determining a production area in an area to be developed; determining the average development index of the single well in the production area according to the reservoir characteristic parameters and the production dynamics of the single well in the production area; determining a distribution grid of a single well in the production area according to a preset rule; and determining an index for developing the compact gas reservoir in the production area according to the single-well average development index and the distribution grid. According to the method and the device for determining the development index of the dense gas reservoir, the development index of the dense gas reservoir can be determined according to the essential characteristics of the dense gas reservoir.
Description
Technical field
This application involves construction of natural gas fields technical field, in particular to the method for a kind of determining tight gas reservoir development index and
Device.
Background technique
Normal gas pools refer mainly to middle and high infiltration gas reservoir, and gas reservoir internal connectivity is good, there is apparent gas reservoir trap boundary, and gas well produces
Amount is higher, and production rate-maintenance capability is relatively strong.Tight gas reservoir (Tight Gas) refers to sandstone of the permeability less than 0.1 millidarcy (mD)
Reservoir natural gas pool, distribution area is big, and without apparent gas reservoir boundary, reservoir permeability is poor, and heterogeneity is strong, net sandstone
Dispersed distribution, between have more compacted zone or shale layer barrier, poor connectivity, well yield is generally lower, and gas well indicator difference is big.
Even if time falling the influence of silt layer there is also the not synsedimentary phase inside single net sandstone or stacked sand body, individual well loses heart range
And limits throughput, more reasonable well pattern, lesser well spacing and more well number are only used, can be only achieved higher gas production scale
And recovery percent of reserves.
Simultaneously as individual well loses heart, range is smaller, and gas well production rate-maintenance capability is poor, therefore, the stable yields and individual well in fine and close gas field
Production rate-maintenance capability difference it is larger.In addition, due to area is big, more than well number and individual well condition random is higher, Accurate Prediction is each
There are great difficulties for the index of individual well, are difficult to realize using the development index accurate simulation that method for numerical simulation carries out full gas field.
Therefore, normal gas pools determine exist in each link of development index design by substantive characteristics with tight gas reservoir reservoir
Larger difference can not apply the exploitation standard of existing normal gas pools, need innovative approach for the development index of tight gas reservoir
It is realized.
It should be noted that the above description of the technical background be intended merely to it is convenient to the technical solution of the application carry out it is clear,
Complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Cannot merely because these schemes the application's
Background technology part is expounded and thinks that above-mentioned technical proposal is known to those skilled in the art.
Summary of the invention
The method and device for being designed to provide a kind of determining tight gas reservoir development index of the application embodiment, with root
According to the substantive characteristics of tight gas reservoir, the development index of tight gas reservoir is determined.
To achieve the above object, on the one hand the application provides the method for a kind of determining tight gas reservoir development index, the side
Method includes:
The reserves and gas-bearing area corresponding with the reserves of candidate regions are determined in region to be developed；Calculate the time
Ratio between the reserves in constituency and the gas-bearing area, and the time by the ratio of calculating more than or equal to preset threshold
Constituency is determined as building producing region in the region to be developed；It is dynamic according to the reservoir characteristic parameter for building producing region and individual well production
State, determine described in build in producing region individual well be averaged development index；Determine individual well in point built in producing region according to preset rules
Gridding；Be averaged development index and the distribution grid according to the individual well, determine to the tight gas reservoir for building producing region into
The index of row exploitation.
To achieve the above object, on the other hand the application provides the device of a kind of determining tight gas reservoir development index, described
Device includes: to build producing region determination unit, for determining the reserves of candidate regions and corresponding with the reserves in region to be developed
Gas-bearing area；The ratio between the reserves of the candidate regions and the gas-bearing area is calculated, and the ratio of calculating is big
It is determined as building producing region in the region to be developed in or equal to the candidate regions of preset threshold；Individual well be averaged development index determine
Unit, for building the reservoir characteristic parameter and individual well Production development in producing region according to, the individual well built in producing region described in determination is flat
Equal development index；It is distributed grid determination unit, for determining individual well in the distribution grid built in producing region according to preset rules；
Index determination unit, for be averaged development index and the distribution grid according to the individual well, determination is to the producing region of building
The index that tight gas reservoir is developed.
The technical solution provided by above the application embodiment is as it can be seen that a kind of determining tight gas reservoir provided by the present application is opened
Bristle with anger calibration method and device, it first can be according to the reservoir characteristic parameter and individual well Production development for building producing region, to determine to accord with
The individual well for closing tight gas reservoir feature is averaged development index.It may then pass through the distribution grid that individual well is determined on building producing region, from
And the tight gas reservoir for building producing region can be developed.The average development index and the distribution of net can finally be passed through
Lattice determine the index developed to the tight gas reservoir for building producing region.Therefore it is provided by the present application a kind of determining fine and close
The method and device of gas reservoir development index can analyze the feature of tight gas reservoir, so that it is determined that the exploitation of tight gas reservoir
Index.
Referring to following description and accompanying drawings, specific implementations of the present application are disclosed in detail, specify the original of the application
Reason can be in a manner of adopted.It should be understood that presently filed embodiment is not so limited in range.In appended power
In the range of the spirit and terms that benefit requires, presently filed embodiment includes many changes, modifications and is equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Detailed description of the invention
Included attached drawing is used to provide to be further understood from the application embodiment, and which constitute the one of specification
The principle of the application for illustrating presently filed embodiment, and with verbal description is come together to illustrate in part.It should be evident that
The accompanying drawings in the following description is only some embodiments of the application, for those of ordinary skill in the art, is not being paid
Out under the premise of creative labor, it is also possible to obtain other drawings based on these drawings.In the accompanying drawings:
Fig. 1 is a kind of method flow diagram of determining tight gas reservoir development index provided by the present application；
Fig. 2 is the distribution grid for the individual well determined in one embodiment of the application；
Fig. 3 is a kind of apparatus function module map for determining tight gas reservoir development index that one embodiment of the application provides.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in mode is applied, the technical solution in the application embodiment is clearly and completely described, it is clear that described
Embodiment is only a part of embodiment of the application, rather than whole embodiments.Based on the embodiment party in the application
Formula, all other embodiment obtained by those of ordinary skill in the art without making creative efforts, is all answered
When the range for belonging to the application protection.
Fig. 1 is a kind of method flow diagram of determining tight gas reservoir development index provided by the present application.Although stream is described below
Journey includes the multiple operations occurred with particular order, but it should be clearly understood that these processes may include more or fewer
Operation, these operations sequentially can be executed or be executed parallel (such as using parallel processor or multi-thread environment).Such as Fig. 1 institute
Show, the method may include following steps.
Step S1: the reserves and gas-bearing area corresponding with the reserves of candidate regions are determined in region to be developed；
Step S2: calculating the ratio between the reserves of the candidate regions and the gas-bearing area, and by the ratio of calculating
The candidate regions that value is more than or equal to preset threshold are determined as building producing region in the region to be developed.
It in the present embodiment, may include muti-piece gassiness region, every piece of gassiness region in the region to be developed
To correspond to reserves and gas-bearing area.It in the present embodiment, can be by being carried out in the region to be developed to gassiness region
Screening, to filter out the region of gassiness enrichment.The region of the gassiness enrichment can be to build producing region for described.
In one embodiment of the application, can be determined in region to be developed candidate regions reserves and with the reserves
Corresponding gas-bearing area, the candidate regions can be the gassiness region in the region to be developed.In this way, determining each time
After the corresponding reserves in constituency and gas-bearing area, the ratio between the reserves of the candidate regions and the gas-bearing area can be calculated
Value.Ratio, that is, the reserves abundance calculated, can indicate the concentration of candidate regions gassiness.It in the present embodiment, can be with
The threshold value of reserves abundance is preset, which can be used to judge whether the reserves abundance of candidate regions meets condition.It is being arranged
After preset threshold, the candidate regions that the ratio of calculating is more than or equal to preset threshold can be determined as described wait open
Producing region is built in hair region.
In the present embodiment, the gas accumulations distribution in the region to be developed can carry out table by layered map
Show.In the layered map, the height of reserves abundance can be indicated by the depth of color, the color the shallow, represents storage
Amount abundance is lower, and the color the deep, and it is higher to represent reserves abundance.In this way, being determined in region to be developed using layered map
When building producing region, the pixel value in the layered map can be identified, and pixel value is met into preset condition
Pixel is determined as building the pixel in producing region.Specifically, if the color in the layered map passes through from shallow to deep
By Huang to red gradually gradual change, then the R that can include in the pixel value according to pixel each in the layered map
The numerical values recited in the channel (red, red) judges whether the pixel is in high reserves abundance region.In this way, by each
The numerical value in the channel R is judged in pixel, may thereby determine that out each pixel built in producing region.
Step S3: it according to the reservoir characteristic parameter for building producing region and individual well Production development, is built in producing region described in determination
Individual well is averaged development index.
In the present embodiment, it being influenced by reservoir conditions and engineering parameter, different list capacity of wells are also different,
Therefore, in the present embodiment, can be built described in determination according to the reservoir characteristic parameter for building producing region and individual well Production development
Individual well in producing region is averaged development index.Wherein, the reservoir characteristic may include the rock type of reservoir, the rock type
It such as can be that perhaps carbonate rock can also be pyroclastic rock class, metamorphic rock class, mud stone class or siliceous to clastic rock class
Rock class etc..The reservoir characteristic can also include diagenesis and pore character, wherein the pore character of reservoir is to control it
One of the factor of gas is preserved, diagenesis to the preservation of hole, development or has destroyed decisive work during pore evolution
With.
In the present embodiment, after analyzing the reservoir characteristic parameter for building producing region, due to different types of
Individual well, the parameters such as corresponding maximum single layer effective thickness, accumulative effective thickness, open-flow capacity and initial production may not
Together, then in the present embodiment, can determine the classification standard of all kinds of individual wells.Specifically, table 1 is one embodiment of the application
The classification standard of the three classes individual well of middle determination.
1 individual well classification standard of table
As can be seen from Table 1, the classification of individual well can by maximum single layer effective thickness, accumulative effective thickness, without choked flow
Amount and initial production these four parameters are divided, and every class list capacity of well is different.In practical applications, due to being passed through
The constraint of Ji condition is often distributed various types of other individual well in described build in producing region.In this way, in the present embodiment, in order to
The development ability of gas reservoir in producing region is built described in accurately measuring, and various types of other individual well can be subjected to COMPREHENSIVE CALCULATING, with determination
Individual well out is averaged development index.
In the present embodiment, after the classification standard for determining all kinds of individual wells, it is corresponding that all kinds of individual wells can be evaluated first
Weight coefficient.The weight coefficient is the quantity of various types of other individual well specific gravity shared in individual well total quantity, therefore, institute
It states weight coefficient often and is greater than 0 and the numerical value less than 1.In the present embodiment, right such as I class well in table 1
The weight coefficient answered is 30%, and the corresponding weight coefficient of II class well is 40%, and the corresponding weight coefficient of III class well is 30%.Evaluation
After the corresponding weight coefficient of all kinds of individual wells, then can according to all kinds of single well yields and shared weight coefficient, determine described in
The individual well built in producing region is averaged development index.Specifically, in the present embodiment, production is built described in can determining according to the following equation
Individual well in area is averaged development index:
Wherein, σ is that the individual well built in producing region is averaged development index, KiFor the index of the i-th class individual well, xiFor the i-th class list
The corresponding weight coefficient of well, U are the classification total amount of individual well.
For example, it is assumed that the corresponding yield of I class well is 2 × 10 in table 14m3/ d, the corresponding yield of II class well be 1.0 ×
104m3/ d, the corresponding yield of III class well are 0.5 × 104m3/ d, then being averaged development index according to the calculated individual well of above formula can
With are as follows:
2 × 0.3+1 × 0.4+0.5 × 0.3=1.15 × 104m3/d
Please refer to table 2.Table 2 shows the corresponding average development index of three classes difference individual well in one embodiment of the application.
The corresponding average development index of 2 three classes difference individual well of table
From Table 2, it can be seen that the individual well is averaged, development index can be related to the time limit of stable yields, for different
Years of stable production, corresponding average development index also tend to difference.
Step S4: determine individual well in the distribution grid built in producing region according to preset rules.
In the present embodiment, it is contemplated that individual well often will have a direct impact on gas reservoir in the distribution rule built in producing region
Development benefit.For example, cannot not only make full use of the production of each individual well if being distributed excessive individual well in building producing region
Ability, while will also the cost for being drilled the gentle well servicing of well be improved, so that the benefit comparison of gas reservoir development is low.However if
It builds in producing region and is distributed very few individual well, then just can not effectively be developed to the gas reservoir of enrichment, equally can gas reservoir be held
The benefit comparison of hair is low.Therefore, in the present embodiment, it can determine that individual well is built in producing region described according to preset rules
It is distributed grid, to guarantee to generate higher gas reservoir development benefit.
Specifically, in the present embodiment, the individual well the distribution grid built in producing region can be by two parameters
To limit.Wherein, well spacing of the parameter between adjacent individual well, another parameter are the well pattern type of individual well.The individual well
Well pattern type for example can be square pattern or staggered well pattern.It therefore, in the present embodiment, can be first, in accordance with default
Rule builds the well spacing in producing region between individual well described in determining.Specifically, in the present embodiment, it can determine according to the following equation
The well spacing built in producing region between individual well:
It is round or oval where it is assumed that gas well bores the net sandstone met, LaIt is built in producing region between individual well to be described
Well spacing, LbWell array pitch (L in producing region is built to be describedb≥La), the reserves in producing region are built described in N expression, T indicates dynamic investment return period,
ERIndicate the recovery percent of reserves at dynamic investment return period end, C indicates natural gas commodity rate, and P indicates gas price, and O indicates gas cost
Valence, T indicate that the expenses of taxation, A indicate gas-bearing area, IDIndicate individual well drilling well investment, IBIndicate single well ground construction investment, r indicates loan
Annual Percentage Rate.
Therefore the well spacing between individual well and build producing region reserves abundance, the recovery percent of reserves of investment payback time and individual well
Cost it is related.In general, the gas reservoir of Thief zone, well yield is high, and the investment payback time is shorter, adopting in the investment payback time
Degree is smaller out, and corresponding well spacing is often larger, that is, the density of individual well distribution is diluter, on the contrary, the gas reservoir of hyposmosis is corresponding
Well spacing it is then smaller, individual well distribution it is intensive then closeer.
In the present embodiment, it may be determined not in the initial stage of development of gas reservoir since the understanding to gas reservoir is insufficient
The entirely appropriate well spacing currently built between the individual well in producing region.So in such a case, it is possible to which the individual well well in producing region will be built in advance
Away from being designed larger, the individual well negligible amounts of distribution.In this way, when the later period with the understanding to gas reservoir gradually deeply, can and
When according to actual result, individual well is encrypted between sparse individual well, to improve gas well to the controlling extent of reserves.
In the present embodiment, after determining the well spacing between individual well, can be joined according to the geology for building producing region
It is several, the well pattern type of individual well in producing region is built described in determination.In the present embodiment, the well pattern type of the individual well can be rectangular
Well pattern or staggered well pattern.Wherein, the individual well in the square pattern square can be distributed, and in the staggered well pattern
Individual well in equilateral triangle can be distributed.Certainly, due to build the geologic parameter in producing region may present in a certain direction it is certain
Permeability orientation, then in practical application scene, it can be by the square pattern or staggered well pattern in permeability maximum
Direction on do it is appropriate stretch or do appropriate compression on the smallest direction of permeability so that in square pattern
Individual well is in distributed rectangular, and the individual well in staggered well pattern is distributed in isosceles triangle.In this way, determining the well spacing between individual well
It, can be in the distribution grid for building determining individual well in producing region and after the well pattern type of individual well.
Please refer to Fig. 2.Fig. 2 is the distribution grid for the individual well determined in one embodiment of the application.From Figure 2 it can be seen that institute
The well pattern type for stating individual well is staggered well pattern, can be by the friendship since the permeability for building producing region is maximum in longitudinal direction
Wrong well pattern stretches along the longitudinal direction, so that the well spacing between longitudinal individual well is greater than the well spacing between lateral individual well.Wherein, it indulges
It can be 800 meters to the well spacing between individual well, the well spacing of the longitudinal direction can be for array pitch shown in Fig. 2；And lateral individual well it
Between well spacing can be 600 meters, the well spacing of the transverse direction can be for well spacing shown in Fig. 2.
Step S5: being averaged development index and the distribution grid according to the individual well, determines to the cause for building producing region
The index that close gas reservoir is developed.
In the present embodiment, when it is described build in producing region determined individual well distribution grid and individual well averagely develop
After index, the tight gas reservoir for building producing region can be developed.During exploitation, due to by individual well index,
Shaft building sequence and the influence of development phase, the prediction result of exploitation also tends to different.It in the present embodiment, can be with needle
To different individual well indexs and shaft building sequence, the candidate for the preset quantity developed to the tight gas reservoir for building producing region is determined
Index.Specifically, table 3 shows four kinds of different candidate indexs in one embodiment of the application.
3 four kinds of table candidate indexs
In the present embodiment, it according to these four different candidate indexs, can predict corresponding in different development phases
Development result.Table 4 shows the development result according to above-mentioned four kinds of Forecasting Development Index of Gas Reservoir.
The prediction result of 4 four kinds of table candidate indexs
As can be seen from Table 4, due in four kinds of gas reservoir candidate's indexs shaft building sequence it is different with individual well index, then build production
Phase, stable production period and the corresponding development result of decline period are also different.It in the present embodiment, can be according to building term, stable production period
And total prediction result, optimal development index is determined from four kinds of candidate indexs.Specifically, it is tied in total prediction
In fruit, may include the production time, it is accumulative bore shaft building number, it is accumulative produce gas, employ oil in place and recovery ratio these parameters,
In each parameter correspond to specific numerical value in every kind of different candidate index.It in the present embodiment, can be by these
Parameter is divided into positive parameter and passive parameter, wherein the meaning of positive parameter is that the numerical value of parameter is bigger, the result of prediction
Better；And the meaning of passive parameter is that the numerical value of parameter is bigger, the result of prediction is poorer.For example, for five above-mentioned ginsengs
Number, can be determined as passive parameter for accumulative brill shaft building number, and other four parameters can be determined as positive parameter.
It can be the different weight coefficient of these parametric distributions after being divided into positive parameter and passive parameter.Then,
The corresponding judge characteristic value of different development results can be calculated according to the following equation:
Wherein, β is the different corresponding judge characteristic values of development index, LqFor the corresponding numerical value of q-th of positive parameter, yq
For the corresponding weight coefficient of q-th of positive parameter, FsFor the corresponding numerical value of s-th of passiveness parameter, gsFor s-th of passive parameter pair
The weight coefficient answered, b are the number of passive parameter, and z is the number of positive parameter.
In this way, calculated judge characteristic value is bigger, then illustrate that the prediction result of corresponding development index is better.So,
In the present embodiment, the maximum candidate index of characteristic value can will be judged to be determined as carrying out the tight gas reservoir for building producing region
The index of exploitation.
If the characteristic value that total prediction index calculates is identical or identical, pneumatic drill shaft building number, stable production period can be produced according to building
Time, annual capacity and stable yields end of term recovery percent of reserves these parameters are judged again.In the present embodiment, to aforementioned four ginseng
Number can will build term brill shaft building number and be determined as passive parameter, other three parameters can be determined as positive parameter, same above-mentioned
Judge characteristic value calculated, judge feature it is bigger, then illustrate that the prediction result of corresponding development index is better.It to examine simultaneously
Consider the industry requirement of time stable production period, stable production period annual capacity.
The technical solution provided by above the application embodiment is as it can be seen that a kind of determining tight gas reservoir provided by the present application is opened
Bristle with anger calibration method, it first can be according to the reservoir characteristic parameter and individual well Production development for building producing region, to determine to meet densification
The individual well of gas reservoir evaluation is averaged development index.It may then pass through the distribution grid that individual well is determined on building producing region, so as to
The tight gas reservoir for building producing region is developed.It can finally be determined by the average development index and the distribution grid
The index that the tight gas reservoir for building producing region is developed.Therefore a kind of determining tight gas reservoir provided by the present application is opened
Bristle with anger calibration method, the feature of tight gas reservoir can be analyzed, so that it is determined that the development index of tight gas reservoir.
The application embodiment also provides a kind of device of determining tight gas reservoir development index.Referring to Fig. 3, described device
May include:
Build producing region determination unit 100, in region to be developed determine candidate regions reserves and with the reserves pair
The gas-bearing area answered；Calculate the ratio between the reserves of the candidate regions and the gas-bearing area, and by the ratio of calculating
It is determined as building producing region in the region to be developed more than or equal to the candidate regions of preset threshold；
Individual well is averaged development index determination unit 200, and the reservoir characteristic parameter and individual well for building producing region according to are raw
Produce dynamic, determine described in build in producing region individual well be averaged development index；
It is distributed grid determination unit 300, for determining individual well in the distribution grid built in producing region according to preset rules；
Index determination unit 400 is used for be averaged according to the individual well development index and the distribution grid, determines to institute
It states and builds the index that the tight gas reservoir in producing region is developed.
In one preferred embodiment of the application, the individual well development index determination unit 200 that is averaged is specifically included:
Classification standard determining module is determined for building the reservoir characteristic parameter and individual well Production development in producing region according to
The classification standard of all kinds of individual wells；
Categorization module, for building classification belonging to individual well in producing region described according to the classification standard, determining；
Weight coefficient determining module determines all kinds of for the ratio according to all kinds of total well numbers of Jing Jing number Zhan in brought in well
The corresponding weight coefficient of individual well；
Determining module, for building described according to all kinds of single well yields and the corresponding weight coefficient of all kinds of individual wells, determining
Individual well in producing region is averaged development index.
In one preferred embodiment of the application, the distribution grid determination unit 300 is specifically included:
Well spacing determining module, for building the well spacing in producing region between individual well according to described in preset rules determination；
Well pattern determination type module builds individual well in producing region described in determination for building the geologic parameter in producing region according to
Well pattern type；
It is distributed grid determining module, for determining list in producing region in described build according to the well spacing and the well pattern type
The distribution grid of well.
In one preferred embodiment of the application, the index determination unit 400 is specifically included:
Candidate index determining module is used for be averaged according to the individual well development index and the distribution grid, determination pair
The candidate index for the preset quantity that the tight gas reservoir for building producing region is developed；
Prediction of result module, for according to the candidate index, prediction using the candidate index to it is described build producing region into
The result of row exploitation；
Characteristic value calculating module is judged, it is special for calculating judge corresponding with candidate's index according to the result of prediction
Value indicative；
Development index determining module, for being determined as the maximum candidate index of the judge characteristic value calculated to described
Build the index that the tight gas reservoir in producing region is developed.
It should be noted that description one of the specific implementation of above-mentioned each functional module with step S1 into S5
It causes, just repeats no more here.
The technical solution provided by above the application embodiment is as it can be seen that a kind of determining tight gas reservoir provided by the present application is opened
Target of bristling with anger device, first can be according to the reservoir characteristic parameter and individual well Production development for building producing region, to determine to meet densification
The individual well of gas reservoir evaluation is averaged development index.It may then pass through the distribution grid that individual well is determined on building producing region, so as to
The tight gas reservoir for building producing region is developed.It can finally be determined by the average development index and the distribution grid
The index that the tight gas reservoir for building producing region is developed.Therefore a kind of determining tight gas reservoir provided by the present application is opened
Target of bristling with anger device can analyze the feature of tight gas reservoir, so that it is determined that the development index of tight gas reservoir.
Those skilled in the art are supplied to the purpose described to the description of the various embodiments of the application above.It is not
It is intended to exhaustion or be not intended to and limit the invention to single disclosed embodiment.As described above, the application's is various
Substitution and variation will be apparent for above-mentioned technology one of ordinary skill in the art.Therefore, although specifically begging for
Some alternative embodiments are discussed, but other embodiment will be apparent or those skilled in the art are opposite
It is easy to obtain.The application is intended to include all substitutions of the invention discussed herein, modification and variation, and falls in
Other embodiment in the spirit and scope of above-mentioned application.
Each embodiment in this specification is described in a progressive manner, same and similar between each embodiment
Part may refer to each other, what each embodiment stressed is the difference with other embodiments.In particular, right
For device embodiments, since it is substantially similar to method implementation, so being described relatively simple, related place ginseng
See the part explanation of method implementation.
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that there are many deformations by the application
With variation without departing from spirit herein, it is desirable to which the attached claims include these deformations and change without departing from the application
Spirit.
Claims (6)
1. a kind of method of determining tight gas reservoir development index characterized by comprising
The reserves and gas-bearing area corresponding with the reserves of candidate regions are determined in region to be developed；
The ratio between the reserves of the candidate regions and the gas-bearing area is calculated, and the ratio of calculating is greater than or is waited
It is determined as building producing region in the region to be developed in the candidate regions of preset threshold；
According to the reservoir characteristic parameter for building producing region and individual well Production development, the individual well built in producing region described in determination is averagely developed
Index；
Determine individual well in the distribution grid built in producing region according to preset rules；
It is averaged development index and the distribution grid according to the individual well, the tight gas reservoir for building producing region is opened in determination
The index of hair；
Wherein, determine that individual well is specifically included in the distribution grid built in producing region according to preset rules: true according to preset rules
The fixed well spacing built in producing region between individual well；According to the geologic parameter for building producing region, individual well in producing region is built described in determination
Well pattern type；According to the well spacing and the well pattern type, in the distribution grid for building determining individual well in producing region；
According to the reservoir characteristic parameter for building producing region and individual well Production development, the individual well built in producing region described in determination is averagely developed
Index specifically includes: according to the reservoir characteristic parameter for building producing region and individual well Production development, determining the classification standard of individual well；Root
According to the classification standard, classification belonging to individual well in producing region is built described in determination；According to the total well of Jing Jing number Zhan all kinds of in brought in well
Several ratios determines the corresponding weight coefficient of all kinds of individual wells；According to all kinds of single well yields and the corresponding weight of all kinds of individual wells
Coefficient, determine described in build in producing region individual well be averaged development index.
2. the method according to claim 1, wherein the individual well built in producing region described in determining according to the following equation is flat
Equal development index:
Wherein, σ is that the individual well built in producing region is averaged development index, KiFor the i-th class list well yield, xiFor the i-th class individual well pair
The weight coefficient answered, U are the classification total amount of individual well.
3. the method according to claim 1, wherein described build individual well in producing region according to described in preset rules determination
Between well spacing specifically include:
The well spacing in producing region between individual well is built described in determining according to the following equation:
It is round or oval where it is assumed that gas well bores the net sandstone met, LaFor the well spacing built in producing region between individual well,
LbWell array pitch (L in producing region is built to be describedb≥La), the reserves in producing region are built described in N expression, and t indicates dynamic investment return period, ERTable
Show the recovery percent of reserves at dynamic investment return period end, C indicates natural gas commodity rate, and P indicates gas price, and O indicates gas cost valence, T
Indicate that the expenses of taxation, A indicate gas-bearing area, IDIndicate individual well drilling well investment, IBIndicate single well ground construction investment, r indicates loan annual interest
Rate.
4. the method according to claim 1, wherein being averaged development index and the distribution according to the individual well
Grid determines that the index developed to the tight gas reservoir for building producing region specifically includes:
It is averaged development index and the distribution grid according to the individual well, the tight gas reservoir for building producing region is opened in determination
The candidate index of the preset quantity of hair；
According to the candidate index, prediction is using the candidate index to the result building producing region and being developed；
Judge characteristic value corresponding with candidate's index is calculated according to the result of prediction；
The maximum candidate index of the judge characteristic value of calculating is determined as developing the tight gas reservoir for building producing region
Index.
5. a kind of device of determining tight gas reservoir development index characterized by comprising
Producing region determination unit is built, for determining the reserves and gassiness corresponding with the reserves of candidate regions in region to be developed
Area；Calculate the ratio between the reserves of the candidate regions and the gas-bearing area, and the ratio of calculating is greater than or
It is determined as building producing region in the region to be developed equal to the candidate regions of preset threshold；
Individual well is averaged development index determination unit, for building the reservoir characteristic parameter and individual well Production development in producing region according to,
The individual well built in producing region described in determination is averaged development index；
It is distributed grid determination unit, for determining individual well in the distribution grid built in producing region according to preset rules；
Index determination unit, is used for be averaged according to the individual well development index and the distribution grid, and determination builds production to described
The index that the tight gas reservoir in area is developed；
Wherein, the distribution grid determination unit specifically includes: well spacing determining module, for building according to described in preset rules determination
Well spacing in producing region between individual well；Well pattern determination type module is built described in determination for building the geologic parameter in producing region according to
The well pattern type of individual well in producing region；It is distributed grid determining module, for being built described according to the well spacing and the well pattern type
The distribution grid of individual well is determined in producing region；
The individual well development index determination unit that is averaged specifically includes: classification standard determining module, for building producing region according to
Reservoir characteristic parameter and individual well Production development, determine the classification standard of all kinds of individual wells；Categorization module, for according to the classification
Standard, determine described in build classification belonging to individual well in producing region；Weight coefficient determining module, for according to all kinds of wells in brought in well
The ratio of the total well number of well number Zhan, determines the corresponding weight coefficient of all kinds of individual wells；Determining module, for according to all kinds of single well yields
And the corresponding weight coefficient of all kinds of individual wells, determine described in build in producing region individual well be averaged development index.
6. device according to claim 5, which is characterized in that the index determination unit specifically includes:
Candidate index determining module is used for be averaged according to the individual well development index and the distribution grid, determines to described
Build the candidate index for the preset quantity that the tight gas reservoir in producing region is developed；
Prediction of result module, for according to the candidate index, prediction to open the producing region of building using the candidate index
The result of hair；
Characteristic value calculating module is judged, for calculating judge feature corresponding with candidate's index according to the result of prediction
Value；
Development index determining module, for being determined as the maximum candidate index of the judge characteristic value calculated to build production to described
The index that the tight gas reservoir in area is developed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610256757.6A CN105913332B (en) | 2016-04-22 | 2016-04-22 | Method and device for determining dense gas reservoir development index |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610256757.6A CN105913332B (en) | 2016-04-22 | 2016-04-22 | Method and device for determining dense gas reservoir development index |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105913332A CN105913332A (en) | 2016-08-31 |
| CN105913332B true CN105913332B (en) | 2019-07-09 |
Family
ID=56752495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610256757.6A Active CN105913332B (en) | 2016-04-22 | 2016-04-22 | Method and device for determining dense gas reservoir development index |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105913332B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107818236B (en) * | 2016-09-12 | 2021-09-17 | 中国石油化工股份有限公司 | Dynamic region selection evaluation method for tight sandstone gas reservoir |
| CN107676073B (en) * | 2017-08-17 | 2020-06-09 | 中国石油天然气股份有限公司 | Method and apparatus for well pattern deployment |
| CN110318741B (en) * | 2018-03-28 | 2021-10-01 | 中国石油化工股份有限公司 | Description method for distribution of residual gas in abnormal high-pressure high-water-content compact low-permeability gas reservoir |
| CN109655934B (en) * | 2018-11-28 | 2021-02-26 | 郭建林 | Gas-bearing area determination method for compact gas reservoir development block based on gas layer drilling rate |
| CN109356577B (en) * | 2018-11-28 | 2022-03-11 | 冀光 | A method for determining the reserves of tight gas reservoirs based on the drilling rate of gas layers |
| CN109630102B (en) * | 2018-11-28 | 2022-11-11 | 郭建林 | Method for measuring gas-containing area of each layer of multilayer low-permeability tight sandstone gas well |
| CN111310339B (en) * | 2020-02-19 | 2020-12-04 | 西南石油大学 | An Equivalent Time Correction Method for Generating Typical Curves of Variable Reserve System |
| CN112031757B (en) * | 2020-09-08 | 2023-07-25 | 中国石油天然气股份有限公司 | Method for evaluating encryption potential of tight gas reservoir well pattern |
| CN113761743B (en) * | 2021-09-07 | 2023-05-05 | 中国地质大学（北京） | Method, device, terminal equipment and storage medium for calculating regional shale gas reserves |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453836A (en) * | 2014-11-17 | 2015-03-25 | 中国石油天然气股份有限公司长庆油田分公司勘探开发研究院 | Multiple-stratum-series tight sandstone gas reservoir well spacing method |
| CN105160414A (en) * | 2015-07-16 | 2015-12-16 | 中国石油天然气股份有限公司 | Method and device for predicting type of full oil reservoir production area |
-
2016
- 2016-04-22 CN CN201610256757.6A patent/CN105913332B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453836A (en) * | 2014-11-17 | 2015-03-25 | 中国石油天然气股份有限公司长庆油田分公司勘探开发研究院 | Multiple-stratum-series tight sandstone gas reservoir well spacing method |
| CN105160414A (en) * | 2015-07-16 | 2015-12-16 | 中国石油天然气股份有限公司 | Method and device for predicting type of full oil reservoir production area |
Non-Patent Citations (3)
| Title |
|---|
| 致密气藏水平井整体开发精细描述研究;吴则鑫 等;《石油化工高等学校学报》;20130430;第26卷(第2期);全文 |
| 苏里格气田强非均质性致密气藏水平井产能评价;李波 等;《天然气地球科学》;20150331;第26卷(第3期);全文 |
| 苏里格气田致密气藏水平井指标分类评价及思考;位云生 等;《开发工程》;20130731;第33卷(第7期);全文 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105913332A (en) | 2016-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105913332B (en) | Method and device for determining dense gas reservoir development index | |
| CN105626009B (en) | Quantitative evaluation method for single-well water injection oil replacement effect of fracture-cave carbonate reservoir | |
| CN105388531B (en) | A kind of Lithology Identification Methods analyzed based on support vector regression and core FISHER | |
| CN104806232B (en) | A kind of method for determining porosity lower limit of fracture | |
| Gherabati et al. | The impact of pressure and fluid property variation on well performance of liquid-rich Eagle Ford shale | |
| CN105445441B (en) | Reservoir gas saturation determination method and device | |
| CN106526693A (en) | crack identification method and device | |
| CN106154351A (en) | A kind of evaluation method of low porosity permeability reservoir permeability | |
| CN106150477A (en) | A kind of method determining single well controlled reserves | |
| CN112016212B (en) | A method for evaluating longitudinal heterogeneity of reservoirs based on seepage control equations | |
| CN105134185B (en) | Reservoir fluid property identification method | |
| Alobaidi | Permeability prediction in one of Iraqi carbonate reservoir using hydraulic flow units and neural networks | |
| CN110424956A (en) | Evaluation unit saves coefficient weights quantization assignment method in shale oil Resources calculation | |
| Askari et al. | A fully integrated method for dynamic rock type characterization development in one of iranian off-shore oil reservoir | |
| CN111487691A (en) | A method for quantitative identification of tight sandstone reservoir lithology and sand body structure | |
| Bahrami et al. | Identification of pore types and pore facies for evaluating the diagenetic performance on reservoir quality: a case study from the Asmari Formation in Ramin Oil Field, SW Iran | |
| CN106680172A (en) | Method for evaluating fractures in tight oil reservoirs | |
| Uguru et al. | Permeability prediction using genetic unit averages of flow zone indicators (FZIs) and neural networks | |
| Sarkheil et al. | Fracture analysis in Tabnak hydrocarbon field of Iran by using fractal geometry and multi-fractal analysis | |
| Feng et al. | A new empirical method for constructing capillary pressure curves from conventional logs in low-permeability sandstones | |
| Mehranfar et al. | Optimization under uncertainty for reliable unconventional play evaluation. A case study in Vaca Muerta shale gas blocks, Argentina | |
| Stright et al. | Modeling, upscaling and history matching thin, irregularly-shaped flow barriers: A comprehensive approach for predicting reservoir connectivity | |
| Amer et al. | Permeability Prediction And Facies Distribution For Yamama Reservoir In Faihaa Oil Field: Role Of Machine Learning And Cluster Analysis Approach | |
| Guo et al. | A new methodology for identification of potential pay zones from well logs: Intelligent system establishment and application in the Eastern Junggar Basin, China | |
| CN106568918A (en) | Method for predicting total organic carbon (TOC) content of shale |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |