CN105572739A - Method for judging carbonatite hole crack development characteristics - Google Patents
Method for judging carbonatite hole crack development characteristics Download PDFInfo
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- CN105572739A CN105572739A CN201610094342.3A CN201610094342A CN105572739A CN 105572739 A CN105572739 A CN 105572739A CN 201610094342 A CN201610094342 A CN 201610094342A CN 105572739 A CN105572739 A CN 105572739A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000010430 carbonatite Substances 0.000 title claims description 16
- 239000011435 rock Substances 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 11
- 229930195733 hydrocarbon Natural products 0.000 claims description 11
- 238000011160 research Methods 0.000 claims description 9
- 238000004458 analytical method Methods 0.000 claims description 5
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 5
- 238000005553 drilling Methods 0.000 abstract description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 150000002430 hydrocarbons Chemical class 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 3
- 238000002224 dissection Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
- G01V1/30—Analysis
- G01V1/306—Analysis for determining physical properties of the subsurface, e.g. impedance, porosity or attenuation profiles
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- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a method for judging the fractured development characteristics of carbonate rock holes, which comprises the following steps: a. processing the three-dimensional seismic data volume, and performing fracture interpretation and horizon tracking; b. predicting the effective reservoir thickness and the effective reservoir porosity by using seismic data; c. analyzing reservoir lithology, reservoir space type, filling degree of a fracture-cave reservoir and change rules of the filling degree of the fracture-cave reservoir in the longitudinal direction and the transverse direction; d. when the boundary is determined, the connectivity, the inter-well connectivity and the oil-gas-water boundary of the reservoir in the longitudinal direction and the transverse direction are researched; e. and establishing a regional oil and gas reservoir profile and an in-unit oil and gas reservoir profile according to the fault line, the construction line, the fluid line, the stratum pinch-out line and the phase change line, describing, dividing development units, and drawing a development unit and an oil and gas area map. The invention improves the drilling rate of the reservoir, obtains the leading comprehensive success rate of exploration, development and drilling in China, and realizes the high and stable yield of a single well.
Description
Technical field
The present invention relates to carbonate rock hydrocarbon reservoir exploratory development technical field, exactly relate to a kind of carbonatite hole Fractured development characteristics determination methods.
Background technology
In tower EPCC the middle ancient times 8 and 43 wellblock proven reserves in " string+sheet ": " sheet ": " in a jumble " proven reserves ratio: 3.3:1.3:5.4, Preliminary Exploitation scheme employs " string+sheet " in geologic reserve: " sheet ": " in a jumble " reflection reserves ratio: 3.2:1.9:4.9 ten thousand tons.But now boring in completion only to bore takes off " beading " and reflect reservoir, drilling success > 80%, and bore and take off " sheet " or " weak in a jumble " reflection reservoir and do not obtain commercial hydrocarbon flow, exploration does not obtain breakthrough.Beading reflection (Caves) output height is relevant to solution cavity size.(output height is relevant to development degree of micro cracks in oil, and crack is educated all the more, and general output is higher for platelet-like reflective; Otherwise output is lower.Mixed and disorderly reflection (single well productivity do not obtained) yields poorly.Gas output follows the rule similar to oil yield, but not too obvious.In the newly-designed 78 mouthfuls of wells of first phase development plan, there are 58 mouthfuls for the horizontal well disposed for " sheet " or " weak in a jumble " reflection, therefore, innovate the key that existing carbonatite hole Fractured development characteristics determination methods is scheme implementation success or failure.
Publication number is CN103325118A, publication date is that the Chinese patent literature on September 25th, 2013 discloses a kind of method and the device that obtain carbonatite rock core Porous Characteristic parameter, wherein, the method comprises: carry out datumization Image semantic classification to carbonatite rock core original image; The Porous Characteristic information on core image is extracted from pretreated core image; According to described hole characteristic information and in conjunction with rock core hole geometric parameter acquisition carbonatite hole geologic parameter.The Porous Characteristic information on carbonatite core image is extracted by image digitazation process; Relevant feature parameters is calculated in conjunction with rock core hole geometric parameter quantitative calculation method; The result of calculation of last statistical study rock core Porous Characteristic geologic parameter, produces corresponding hole analytical statement and the result of display analysis calculating, can carry out the storage of result of calculation as required; Like this, the analysis of feature extraction and macro and micro can be carried out very easily to carbonatite core surface hole, obtain relevant geologic characteristic parameter α, better the distribution situation of research and predicting reservoir.
But, with the prior art that above-mentioned patent documentation is representative, it can not be directly applied for Lower Ordovician Series hawk mountain, wellblock in the middle ancient times 8 and 43 this type of carbonate reservoir transformed primarily of karst of group in tower, and its reservoir space is mainly crack or the corrosion hole relevant to crack, and Rock Matrix hole is very low.These reservoir spaces are mainly shown the result of raw corrosion and later stage ascending-type corrosion superimposed reformation by many phases, therefore reservoir structure is complicated, nonuniformity is strong, only carry out hole parameter for rock core portrays research to above-mentioned prior art, can not provide useful guidance to non-drilling well area.
Summary of the invention
The present invention is intended to for the defect existing for above-mentioned prior art and deficiency, a kind of carbonatite hole Fractured development characteristics determination methods is provided, the present invention proposes to stitch hole and preserve the dissection thinking and countermeasure that unit is core, in order to instruct geological reservoir research, well site deployment, optimum level well track.Improve reservoir Drilling ratio, achieve and occupy domestically leading exploratory development and drill comprehensive success ratio, achieve individual well stable high yield.
The present invention realizes by adopting following technical proposals:
A kind of carbonatite hole Fractured development characteristics determination methods, is characterized in that step is as follows:
A, attribute process is carried out to 3-d seismic data set, with the hole of the relative gathering groups shape distribution of different attribute Characterizations, hole, seam network structure body as the foundation of hydrocarbon-bearing pool dividing elements, carry out fault interpretation and tracing of horizons;
B, utilize seismic data, carry out reservoir attribute analysis, reservoir prediction, FRACTURE PREDICTION, reservoir porosity inverting research, prediction Effective Reservoirs thickness and Effective Reservoirs factor of porosity;
C, based on rock core, well logging, seismic data, analyze reservoir lithology, reservoir space type, fracture cave reservoir is filled with degree, and fracture cave reservoir is filled with degree Changing Pattern in machine and transverse direction;
D, when border is determined, consider the constraint of structural division and Palaeokarst Landform, ancient hydrological similarity, based on individual well, on many well profile contrast bases, the connectedness on Study In Reservoir vertical and horizontal, inter well connectivity and oil gas water boundaries;
E, according to line of rent, tectonic line, fluid line, stratigraphic pitch-out line and phase change line, oil gas reservoir profile in many regional oil gas reservoir profiles and unit is set up along structure and vertical configuration direction, divide each Reservoir Development unit and portray element form, drawing development block and hydrocarbon-bearing area figure.
In described a step, attribute process refers to amplitude or the attribute process such as relevant.
In described step e, this five Xian Shitazhi research institute of this five line of line of rent, tectonic line, fluid line, stratigraphic pitch-out line and phase change line proposes, and appears at Tarim Oilfield company engineer in chief Liu and builds in " passages through which vital energy circulates is theoretical " that merit shows.
Compared with prior art, the beneficial effect that reaches of the present invention is as follows:
To after the portraying of seam_cavern type, break through the simple thinking relying on " beading " seismic reflection to find reservoir, in conjunction with TZ area karst reservoir distribution the characteristic study, through careful Geologic Demonstration, sheet seismic reflection is selected to be breach, deploy 4 mouthfuls of wells, platelet-like reflective band dispose 201-1H in tower, the middle ancient times 11-H3 well, dispose 111-H1 well in the middle ancient times in strong sheet and the weak beading zone of reflections.Except 201-1H in tower because engineering reasons fails to reach acidfracturing treatment object, the middle ancient times, 11-H3 well obtained high yield in weak sheet and the weak zone of reflections first, establish the high GR of hawk mountain group height GR(and high two GR) under karst internal pool pattern, the middle ancient times, 111-H1 well obtained high yield in strong sheet and weak beading seismic zone first, set up the well pattern of this block high yield well group.Subsequently at the 8-5H well in the middle ancient times that pure earthquake sheet stratum is disposed, real boring does not obtain good show of oil and gas, and by 8 sections of acidfracturing treatment at the beginning of 2014, test obtains high produced hydrocarbon fluid.
In tower, carbonatite hole Fractured development characteristics determination methods instructs geological reservoir research, well site deployment, continues to optimize horizontal well path.Improve TZ area and improve reservoir Drilling ratio, achieve and occupy domestically leading exploratory development and drill comprehensive success ratio (97%), realize individual well stable high yield, the practice in tower, believe that the most important theories that also can become other similar carbonate rock hydrocarbon reservoir exploratory development instructs.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, wherein:
Fig. 1 is schematic flow sheet of the present invention.
Embodiment
In tower, Lower Ordovician Series hawk mountain, wellblock in the middle ancient times 8 and 43 group is a set of carbonate reservoir transformed by karst, its reservoir space is mainly crack or the corrosion hole relevant to crack, Rock Matrix hole is very low. and these reservoir spaces are mainly shown the result of raw corrosion and later stage ascending-type corrosion superimposed reformation by many phases, therefore reservoir structure is complicated, nonuniformity is strong. and for the development characteristics of this kind of reservoir, propose to stitch hole and preserve the dissection thinking and countermeasure that unit is core:
1,3-d seismic data set is processed again, portray the hole of relative gathering groups shape distribution, hole, seam network structure body as the Main Basis of in system primary unit division, carry out the good inner tower league (unit of length) group in Ta Zhong II district, hawk mountain group fault interpretation and tracing of horizons;
2, make full use of seismic data, carried out the researchs such as reservoir attribute analysis, reservoir prediction, FRACTURE PREDICTION, reservoir porosity inverting extensively and profoundly, predicted Effective Reservoirs thickness and Effective Reservoirs factor of porosity;
3, based on rock core, well logging, seismic data, analyze reservoir lithology, reservoir space type, fracture cave reservoir is filled with degree, and fracture cave reservoir is filled with degree Changing Pattern in machine and transverse direction;
4, further consider again the constraint of structural division and Palaeokarst Landform, ancient hydrological similarity when border is determined, simultaneously based on individual well, on many well profile contrast bases, have studied the connectedness on reservoir vertical and horizontal, inter well connectivity, oil gas water boundaries
5, the complicacy novelty for carbonatite in tower proposes " five lines ": line of rent, tectonic line, fluid line, stratigraphic pitch-out line, phase change line, establish oil gas reservoir profile in many regional oil gas reservoir profiles and more than 40 unit, meticulous depiction has been carried out to this district's hydrocarbon-bearing pool form, and divided development block, depict development block and hydrocarbon-bearing area figure.
To after the portraying of seam_cavern type, break through the simple thinking relying on " beading " seismic reflection to find reservoir, in conjunction with TZ area karst reservoir distribution the characteristic study, through careful Geologic Demonstration, sheet seismic reflection is selected to be breach, deploy 4 mouthfuls of wells, platelet-like reflective band dispose 201-1H in tower, the middle ancient times 11-H3 well, dispose 111-H1 well in the middle ancient times in strong sheet and the weak beading zone of reflections.Except 201-1H in tower because engineering reasons fails to reach acidfracturing treatment object, the middle ancient times, 11-H3 well obtained high yield in weak sheet and the weak zone of reflections first, establish the high GR of hawk mountain group height GR(and high two GR) under karst internal pool pattern, the middle ancient times, 111-H1 well obtained high yield in strong sheet and weak beading seismic zone first, set up the well pattern of this block high yield well group.Subsequently at the 8-5H well in the middle ancient times that pure earthquake sheet stratum is disposed, real boring does not obtain good show of oil and gas, and by 8 sections of acidfracturing treatment at the beginning of 2014, test obtains high produced hydrocarbon fluid.
In tower, carbonatite hole Fractured development characteristics determination methods instructs geological reservoir research, well site deployment, continues to optimize horizontal well path.Improve TZ area and improve reservoir Drilling ratio, achieve and occupy domestically leading exploratory development and drill comprehensive success ratio (97%), realize individual well stable high yield, the practice in tower, believe that the most important theories that also can become other similar carbonate rock hydrocarbon reservoir exploratory development instructs.
Claims (2)
1. a carbonatite hole Fractured development characteristics determination methods, is characterized in that step is as follows:
A, 3-d seismic data set to be processed, portrays the hole of relative gathering groups shape distribution, foundation that hole, seam network structure body divide as in system primary unit, carry out fault interpretation and tracing of horizons;
B, utilize seismic data, carry out reservoir attribute analysis, reservoir prediction, FRACTURE PREDICTION, reservoir porosity inverting research, prediction Effective Reservoirs thickness and Effective Reservoirs factor of porosity;
C, based on rock core, well logging, seismic data, analyze reservoir lithology, reservoir space type, fracture cave reservoir is filled with degree, and fracture cave reservoir is filled with degree Changing Pattern in machine and transverse direction;
D, when border is determined, consider the constraint of structural division and Palaeokarst Landform, ancient hydrological similarity, based on individual well, on many well profile contrast bases, the connectedness on Study In Reservoir vertical and horizontal, inter well connectivity and oil gas water boundaries;
E, according to line of rent, tectonic line, fluid line, stratigraphic pitch-out line and phase change line, set up oil gas reservoir profile in regional oil gas reservoir profile and unit, portray, divide development block, draw development block and hydrocarbon-bearing area figure.
2. a kind of carbonatite hole Fractured development characteristics determination methods according to claim 1, it is characterized in that: in described a step, attribute process refers to amplitude or coherence properties process.
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106845786A (en) * | 2016-12-26 | 2017-06-13 | 中国石油天然气股份有限公司 | Method and device for evaluating reservoir connectivity between injection well and production well |
| CN107558999A (en) * | 2017-07-03 | 2018-01-09 | 恒泰艾普集团股份有限公司 | A kind of isolated fracture hole body residual oil quantitative Forecasting Methodology |
| CN108196302A (en) * | 2017-11-28 | 2018-06-22 | 中国石油天然气股份有限公司 | Forecasting method and device for dessert region of dolomite fracture-cave development reservoir |
| CN109581515A (en) * | 2018-10-23 | 2019-04-05 | 中国石油天然气集团有限公司 | A kind of carbonate rock hole oil-gas reservoir electromagnetic wave prediction technique and system |
| CN109583016A (en) * | 2018-10-22 | 2019-04-05 | 恒泰艾普集团股份有限公司 | A kind of space geometry form of fracture hole body is determining and quantitative calculation method |
| CN110858001A (en) * | 2018-08-22 | 2020-03-03 | 中国石油化工股份有限公司 | Analytical method for deep carbonate rock slip fracture zone |
| CN110941027A (en) * | 2018-09-21 | 2020-03-31 | 潜能恒信能源技术股份有限公司 | Method and system for calculating carbonate karst etching hole type geothermal energy reserves |
| CN111257188A (en) * | 2018-11-30 | 2020-06-09 | 中国石油天然气股份有限公司 | Multi-scale characterization method and device for carbonate rock pore system |
| CN111722277A (en) * | 2019-03-22 | 2020-09-29 | 中国石油化工股份有限公司 | Method and device for describing broken solution trap for broken solution oil and gas reservoir exploration |
| CN111736216A (en) * | 2020-05-25 | 2020-10-02 | 恒泰艾普集团股份有限公司 | Oil-water interface seismic horizon determination method based on earthquake |
| CN112114357A (en) * | 2019-06-19 | 2020-12-22 | 中国石油天然气股份有限公司 | Method and device for predicting connectivity of fracture-cavity reservoir |
| CN112925017A (en) * | 2021-03-29 | 2021-06-08 | 中国石油大学(华东) | Fracture type reservoir geological modeling method |
| CN114280686A (en) * | 2020-09-27 | 2022-04-05 | 中国石油天然气股份有限公司 | Method and equipment for analyzing physical properties of core of carbonate reservoir |
| CN115220100A (en) * | 2022-06-15 | 2022-10-21 | 西安恒泰艾普能源发展有限公司 | Method and system for analyzing carbonate rock water channeling channel |
| CN115263289A (en) * | 2022-08-09 | 2022-11-01 | 中国石油大学(北京) | Limestone fracture-cave type oil reservoir development scale difference evaluation method |
| CN115308791A (en) * | 2021-05-08 | 2022-11-08 | 中国石油天然气股份有限公司 | Method and device for identifying rock crack holes of charcoal volcanic rock |
| CN115263289B (en) * | 2022-08-09 | 2025-04-18 | 中国石油大学(北京) | A method for evaluating reservoir development scale differences in limestone fracture-vuggy reservoirs |
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| CN110941027A (en) * | 2018-09-21 | 2020-03-31 | 潜能恒信能源技术股份有限公司 | Method and system for calculating carbonate karst etching hole type geothermal energy reserves |
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| CN112114357A (en) * | 2019-06-19 | 2020-12-22 | 中国石油天然气股份有限公司 | Method and device for predicting connectivity of fracture-cavity reservoir |
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| CN111736216B (en) * | 2020-05-25 | 2023-06-16 | 恒泰艾普集团股份有限公司 | Oil-water interface seismic horizon determination method based on earthquake |
| CN114280686A (en) * | 2020-09-27 | 2022-04-05 | 中国石油天然气股份有限公司 | Method and equipment for analyzing physical properties of core of carbonate reservoir |
| CN114280686B (en) * | 2020-09-27 | 2024-05-28 | 中国石油天然气股份有限公司 | Rock core physical property analysis method and equipment for carbonate reservoir |
| CN112925017A (en) * | 2021-03-29 | 2021-06-08 | 中国石油大学(华东) | Fracture type reservoir geological modeling method |
| CN115308791A (en) * | 2021-05-08 | 2022-11-08 | 中国石油天然气股份有限公司 | Method and device for identifying rock crack holes of charcoal volcanic rock |
| CN115220100A (en) * | 2022-06-15 | 2022-10-21 | 西安恒泰艾普能源发展有限公司 | Method and system for analyzing carbonate rock water channeling channel |
| CN115220100B (en) * | 2022-06-15 | 2023-09-01 | 西安恒泰艾普能源发展有限公司 | Analysis method and system for carbonate rock water channeling channel |
| CN115263289A (en) * | 2022-08-09 | 2022-11-01 | 中国石油大学(北京) | Limestone fracture-cave type oil reservoir development scale difference evaluation method |
| CN115263289B (en) * | 2022-08-09 | 2025-04-18 | 中国石油大学(北京) | A method for evaluating reservoir development scale differences in limestone fracture-vuggy reservoirs |
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