CN105572739B - Method for judging carbonatite hole crack development characteristics - Google Patents
Method for judging carbonatite hole crack development characteristics Download PDFInfo
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- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
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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 exploration and development technical fields, specifically relate to a kind of carbonate rock hole
Crack gonadal development characteristic judgment method.
Background technique
In tower in the proved reserves of the wellblock of the middle ancient times 8 and 43 of EPCC " string+piece ": " piece ": " mixed and disorderly " proved reserves ratio:
3.3:1.3:5.4, Preliminary Exploitation scheme employ in oil in place " string+piece ": " piece ": " mixed and disorderly " reflection reserves ratio: 3.2:1.9:
4.9 ten thousand tons.But be now drilled in well only bore take off " beading " reflection reservoir, drilling success > 80%, and bore take off it is " sheet " or " miscellaneous
It is disorderly weak " reflection reservoir do not obtain commercial hydrocarbon flow, and exploration is not broken through.Beading reflects (Caves) yield height and solution cavity
Size is related.(yield height is related to development degree of micro cracks in oil, and crack is more developed, and general yield is higher for platelet-like reflective；Conversely, producing
It measures lower.Mixed and disorderly reflection (single well productivity not obtained) low output.Gas yield follows rule similar with oil yield, but less
Obviously.There is 58 mouthfuls of water to dispose for " sheet " or " mixed and disorderly weak " reflection in the newly-designed 78 mouthfuls of wells of first phase development plan
Horizontal well, therefore, innovating existing carbonate rock hole crack gonadal development characteristic judgment method is the key that scheme implements success or failure.
Publication No. CN103325118A, publication date disclose one kind for the Chinese patent literature on the 25th of September in 2013 and obtain
Take the method and device of carbonate rock rock core Porous Characteristic parameter, wherein this method comprises: to carbonate rock rock core original image
Carry out digitization image preprocessing；The Porous Characteristic information on core image is extracted from pretreated core image；Root
According to described hole characteristic information and rock core hole geometric parameter is combined to obtain carbonate rock hole geologic parameter.Pass through image digitization
Change the Porous Characteristic information on processing extraction carbonate rock core image；In conjunction with rock core hole geometric parameter quantitative calculation method meter
Calculation obtains relevant feature parameters；The calculated result for finally statisticalling analyze rock core Porous Characteristic geologic parameter, produces corresponding hole
Analytical statement and show analytical calculation as a result, the storage as needed that calculated result can be carried out；In this way, can be very easily
The analysis of feature extraction and macro and micro is carried out to carbonate rock core surface hole, obtains related geologic characteristic parameter α, more preferably
The distribution situation of ground research and predicting reservoir.
But using above patent document as the prior art of representative, it is not directly adaptable to use the wellblock of the middle ancient times 8 and 43 in tower
The such carbonate reservoir being mainly transformed by karst of Lower Ordovician Series hawk mountain group, reservoir space is mainly crack or and crack
Relevant corrosion hole, Rock Matrix hole are very low.These reservoir spaces are mainly by the raw corrosion of more phase tables and on the later period
Rise type corrosion superimposed reformation as a result, therefore reservoir structure is complicated, heterogeneity is strong, the above-mentioned prior art is just for rock core
Carry out hole parameter and portray research, beneficial guidance cannot be provided to non-drilling well area.
Summary of the invention
The present invention is directed to provide a kind of carbonate rock hole crack for defect and deficiency present in the above-mentioned prior art
Gonadal development characteristic judgment method, the invention proposes dissection idea and method of the unit as core is preserved using fracture hole, to instruct
Geological reservoir research, well site deployment, optimum level well track.Reservoir Drilling ratio is improved, is achieved and is occupy domestically leading and survey
It visits exploitation and drills comprehensive success rate, realize individual well stable high yield.
The present invention is realized by using following technical proposals:
A kind of carbonate rock hole crack gonadal development characteristic judgment method, it is characterised in that steps are as follows:
A, attribute processing is carried out to 3-d seismic data set, with different attribute Characterizations with respect to the distribution of gathering groups shape
The foundation of hole, hole, seam network structure body as oil-gas reservoir dividing elements, carries out fault interpretation and tracing of horizons；
B, using seismic data, carry out reservoir attribute analysis, reservoir prediction, FRACTURE PREDICTION, reservoir porosity inverting research,
Predict effective reservoir thickness and effective reservoir porosity；
C, based on rock core, well logging, seismic data, reservoir lithology, reservoir space type are analyzed, fracture cave reservoir is filled with
Degree, fracture cave reservoir are filled with the changing rule of degree in machine and transverse direction；
D, when boundary determines, consider the constraint of structural division and Palaeokarst Landform, ancient hydrological similarity, be with individual well
Basis, on the basis of the comparison of more well profiles, connectivity on Study In Reservoir vertical and horizontal, inter well connectivity and oil gas waterside
Boundary；
E, it according to fault line, construction line, fluid line, stratal pinch-outs line and phase change line, is built along construction and vertical configuration direction
Oil gas reservoir profile in a plurality of regional oil gas reservoir profile and unit is found, each Reservoir Development unit is divided and portrays element form,
Draw development block and hydrocarbon-bearing area figure.
In a step, attribute processing refers to amplitude or the equal attributes processing that is concerned with.
In the step e, fault line, construction line, fluid line, stratal pinch-outs line and this five line of phase change line this five line are that tower refers to
What research institute proposed, it appears in Tarim Oilfield company chief engineer's Liu Jian merit written " passages through which vital energy circulates is theoretical ".
Compared with prior art, the beneficial effects obtained by the present invention are as follows it is as follows:
To the thinking for finding reservoir by " beading " seismic reflection merely after the portraying of seam_cavern type, is broken through, in conjunction with tower
Middle karst reservoir distribution the characteristic study selects sheet seismic reflection for breach by careful Geologic Demonstration, deployment
4 mouthfuls of wells, 201-1H, middle ancient times 11-H3 well in platelet-like reflective band deployment tower, in strong sheet and the weak beading reflection band deployment middle ancient times
111-H1 well.Except 201-1H in tower is because engineering reasons fail to reach acidfracturing treatment purpose, middle ancient times 11-H3 well is for the first time in weak sheet
Obtain high yield with weak reflection band, establish a hawk mountain group high GR(high GR and high two GR) under karst internal pool mode, the middle ancient times
111-H1 well obtains high yield in strong sheet and weak beading earthquake zone for the first time, establishes the well pattern of the block high yield well group.Then
In the middle ancient times 8-5H well of pure earthquake sheet stratum deployment, real bore is not obtained good oil/gas show, is changed at the beginning of 2014 by 8 sections of acid fracturings
It makes, test obtains high produced hydrocarbon fluid.
In tower carbonate rock hole crack gonadal development characteristic judgment method instruct geological reservoir research, well site deployment, constantly
Optimum level well track.It improves TZ area and improves reservoir Drilling ratio, achieve the exploration and development probing for occuping domestically leading
Comprehensive success rate (97%) realizes individual well stable high yield, by the practice in tower, it is believed that can also become other similar carbonate rock
The most important theories of reservoir exploration and development instruct.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, in which:
Fig. 1 is flow diagram of the present invention.
Specific embodiment
The wellblock Lower Ordovician Series hawk of the middle ancient times 8 and 43 mountain group is a set of carbonate reservoir being transformed by karst, storage in tower
Collecting space is mainly that crack or corrosion hole relevant to crack, Rock Matrix hole are very low.These reservoir spaces mainly by
The raw corrosions of more phase tables and later period ascending-type corrosion superimposed reformation as a result, therefore reservoir structure is complicated, heterogeneity
Strong is directed to the development characteristics of this kind of reservoir, proposes the dissection idea and method for preserving unit as core using fracture hole:
1,3-d seismic data set is handled again, portrays the hole, hole, seam network structure of opposite gathering groups shape distribution
The main foundation that body is divided as in system primary unit has carried out II Qu Liangli tower league (unit of length) group of Ta Zhong, hawk mountain group fracture solution
It releases and tracing of horizons；
2, seismic data is made full use of, reservoir attribute analysis, reservoir prediction, FRACTURE PREDICTION, reservoir have extensively and profoundly been carried out
The research such as porosity inversion, predicts effective reservoir thickness and effective reservoir porosity；
3, based on rock core, well logging, seismic data, reservoir lithology, reservoir space type are analyzed, fracture cave reservoir is filled
Degree is filled out, fracture cave reservoir is filled with the changing rule of degree in machine and transverse direction；
4, the constraint of structural division and Palaeokarst Landform, ancient hydrological similarity is further considered when boundary determines, together
When based on individual well, more well profiles comparison on the basis of, have studied the connectivity on reservoir vertical and horizontal, interwell communication
Property, oil gas water boundaries
5, the complexity novelty for carbonate rock in tower proposes " five lines ": fault line, construction line, fluid line,
Layer pinch-out boundary, phase change line establish oil gas reservoir profile in a plurality of regional oil gas reservoir profile and more than 40 units, to area's oil gas
Hiding form has carried out meticulous depiction, and has divided development block, depicts development block and hydrocarbon-bearing area figure.
To the thinking for finding reservoir by " beading " seismic reflection merely after the portraying of seam_cavern type, is broken through, in conjunction with tower
Middle karst reservoir distribution the characteristic study selects sheet seismic reflection for breach by careful Geologic Demonstration, deployment
4 mouthfuls of wells, 201-1H, middle ancient times 11-H3 well in platelet-like reflective band deployment tower, in strong sheet and the weak beading reflection band deployment middle ancient times
111-H1 well.Except 201-1H in tower is because engineering reasons fail to reach acidfracturing treatment purpose, middle ancient times 11-H3 well is for the first time in weak sheet
Obtain high yield with weak reflection band, establish a hawk mountain group high GR(high GR and high two GR) under karst internal pool mode, the middle ancient times
111-H1 well obtains high yield in strong sheet and weak beading earthquake zone for the first time, establishes the well pattern of the block high yield well group.Then
In the middle ancient times 8-5H well of pure earthquake sheet stratum deployment, real bore is not obtained good oil/gas show, is changed at the beginning of 2014 by 8 sections of acid fracturings
It makes, test obtains high produced hydrocarbon fluid.
In tower carbonate rock hole crack gonadal development characteristic judgment method instruct geological reservoir research, well site deployment, constantly
Optimum level well track.It improves TZ area and improves reservoir Drilling ratio, achieve the exploration and development probing for occuping domestically leading
Comprehensive success rate (97%) realizes individual well stable high yield, by the practice in tower, it is believed that can also become other similar carbonate rock
The most important theories of reservoir exploration and development instruct.
Claims (2)
1. a kind of carbonate rock hole crack gonadal development characteristic judgment method, it is characterised in that steps are as follows:
A, to 3-d seismic data set carry out attribute processing, with different attribute Characterizations with respect to gathering groups shape distribution hole, hole,
The foundation that network structure body is divided as in system primary unit is stitched, fault interpretation and tracing of horizons are carried out；
B, using seismic data, carry out reservoir attribute analysis, reservoir prediction, FRACTURE PREDICTION, reservoir porosity inverting research, prediction
Effective reservoir thickness and effective reservoir porosity；
C, based on rock core, well logging, seismic data, reservoir lithology, reservoir space type are analyzed, fracture cave reservoir is filled with journey
Degree, fracture cave reservoir are filled with the changing rule of degree in machine and transverse direction；
D, when boundary determines, the constraint of structural division and Palaeokarst Landform, ancient hydrological similarity is considered, using individual well as base
Plinth, on the basis of the comparison of more well profiles, connectivity on Study In Reservoir vertical and horizontal, inter well connectivity and oil gas water boundaries；
E, according to fault line, construction line, fluid line, stratal pinch-outs line and phase change line, regional oil gas reservoir profile and unit are established
Interior oil gas reservoir profile, is portrayed, and development block is divided, and draws development block and hydrocarbon-bearing area figure.
2. a kind of carbonate rock hole crack according to claim 1 gonadal development characteristic judgment method, it is characterised in that: institute
It states in a step, attribute processing refers to amplitude or coherence properties processing.
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| CN107558999B (en) * | 2017-07-03 | 2021-02-23 | 恒泰艾普集团股份有限公司 | Quantitative prediction method for residual oil in isolated fracture-cavity body |
| 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 |
| CN110858001B (en) * | 2018-08-22 | 2022-01-25 | 中国石油化工股份有限公司 | Analytical method for deep carbonate rock slip fracture zone |
| CN110941027B (en) * | 2018-09-21 | 2022-03-22 | 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 |
| CN109583016B (en) * | 2018-10-22 | 2023-04-07 | 恒泰艾普集团股份有限公司 | Method for determining and quantitatively calculating space geometric form of fracture-cavity body |
| CN109581515B (en) * | 2018-10-23 | 2020-10-09 | 中国石油天然气集团有限公司 | Carbonate rock hole oil and gas reservoir electromagnetic wave prediction method and system |
| CN111257188B (en) * | 2018-11-30 | 2022-10-04 | 中国石油天然气股份有限公司 | Multi-scale characterization method and device for carbonate rock pore system |
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| 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 |
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| CN103645506B (en) * | 2013-11-08 | 2015-09-02 | 中国石油大学(北京) | A kind of method detecting development degree of micro cracks in oil in stratum |
| CN103645505B (en) * | 2013-11-08 | 2015-09-02 | 中国石油大学(北京) | A kind of method of development degree of micro cracks in oil in quantitative detection stratum |
| RU2578733C2 (en) * | 2013-12-24 | 2016-03-27 | Общество с ограниченной ответственностью "ЛУКОЙЛ-Инжиниринг" (ООО "ЛУКОЙЛ-Инжиниринг") | Method for placement of prospecting, exploration and production wells on oil and gas fields based on multi-variant three-dimensional geological models |
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