CN112255676B - Method for quantitatively searching beneficial trap in conjugate zone of conjugate sliding fault with opposite rotation directions - Google Patents
Method for quantitatively searching beneficial trap in conjugate zone of conjugate sliding fault with opposite rotation directions Download PDFInfo
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- CN112255676B CN112255676B CN202011104418.9A CN202011104418A CN112255676B CN 112255676 B CN112255676 B CN 112255676B CN 202011104418 A CN202011104418 A CN 202011104418A CN 112255676 B CN112255676 B CN 112255676B
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000009286 beneficial effect Effects 0.000 title abstract description 6
- 230000001427 coherent effect Effects 0.000 claims abstract description 10
- 230000002349 favourable effect Effects 0.000 claims abstract description 6
- 238000011160 research Methods 0.000 description 5
- 230000006837 decompression Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
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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. analysis, for interpretation, for correction
- G01V1/30—Analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/60—Analysis
- G01V2210/64—Geostructures, e.g. in 3D data cubes
- G01V2210/642—Faults
Abstract
The invention discloses a method for quantitatively searching beneficial trap in a conjugate zone of a conjugate sliding fault with opposite rotation directions, which comprises the following steps: two conjugate walk-slip faults with opposite rotation directions, which are used for quantitatively representing walk-slip pressurization and pressure release strength, are definitely needed, different layer coherent slices and three-dimensional seismic data volumes at the junction of the two conjugate walk-slip faults are obtained, the three-dimensional data volumes are calibrated in layers, and the coherent slices are used for combining with the seismic data volumes to explain to obtain fault lines of the two conjugate walk-slip faults of each layer; obtaining the regional walk and slide direction according to regional stress field data and GPS data; and (3) taking intersection angles of two fault lines of the same layer as angular bisectors, respectively rotating the two angular bisectors to the sliding direction of the region to respectively obtain two rotation angles alpha 1 and alpha 2, calculating to obtain cosine values cos alpha 1 and cos alpha 2 of the two angles, wherein positive values represent supercharging, negative values represent pressure release, absolute values represent the relative magnitudes of the supercharging and pressure release intensities, and positive value regions are regions favorable for large-scale trap development.
Description
Technical Field
The invention relates to the technical field of petroleum geological exploration, in particular to a method for quantitatively searching favorable trap in a conjugate zone of a conjugate sliding fault with opposite rotation directions.
Background
For a certain geological region, due to the variability of the ground construction environment where the geological region is located and the complexity of the experienced movement, various construction combination patterns in the geological region can be diversified, a relatively special running and sliding fault combination mode is found in the running and sliding band research process by the former, namely two running and sliding faults with opposite rotation directions are intersected in a conjugate mode, and the two running and sliding faults with opposite rotation directions and intersected in a conjugate mode can cause convergence or dispersion of blocks in the intersection region of the running and sliding faults, so that a pressurizing region and a pressure release region are formed. The pressurizing area can form a bulge structure or even an extrusion fault, and the pressure release area can generate bottom layer settlement to form a fault block structure and develop and stretch the fault. Previous researches suggest that in the pressurizing area of the conjugate intersection layer, a torsion and reverse rotation is generated to form a trap group of a positive topography, and in the pressure release stretch-draw area, a stretch-draw and fracture is often formed, so that the trap scale is smaller. Obviously, accurately distinguishing the supercharging region has important significance for efficiently searching high-quality trap clusters.
The current research on the conjugate fault supercharging region with opposite rotation directions mainly focuses on qualitative division, and no research on further analysis of the conjugate fault supercharging strength is seen.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method for quantitatively representing the boost strength of a conjugate zone of a conjugate walk-slip fault with opposite rotation directions.
The aim of the invention is achieved by the following technical scheme.
The invention relates to a method for quantitatively searching beneficial trap in a conjugate zone of a conjugate sliding fault with opposite rotation directions, which comprises the following steps:
s1: two conjugate walk-slide faults with opposite rotation directions, which are required to quantitatively represent walk-slide pressurizing strength, are definitely needed to obtain different layer coherent slices and three-dimensional seismic data volumes at the junction of the two conjugate walk-slide faults, and perform layer calibration on the three-dimensional data volumes, and the coherent slices are utilized to combine with the seismic data volumes to explain to obtain fault lines of the two conjugate walk-slide faults of each layer;
s2: obtaining the regional walk and slide direction according to regional stress field data and GPS data;
s3: and (2) taking the intersection angle of the two fault lines of the same layer system obtained in the step (S1) as an angular bisector, respectively rotating the two angular bisectors to the region sliding direction to respectively obtain two rotation angles alpha 1 and alpha 2, calculating to obtain the cosine values cos alpha 1 and cos alpha 2 of the two angles, wherein a positive value represents supercharging, a negative value represents pressure release, and an absolute value represents the relative magnitude of supercharging and pressure release intensity.
In the step S3, the two angular bisectors rotate as follows: the region slide rotates counterclockwise when the region slide is right-handed, and the region slide rotates clockwise when the region slide is left-handed Shi Shun.
S4: areas that evaluate positive values may be determined to be suitable for finding advantageous scale traps.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
based on structural analysis, the invention combines the kinematics and mechanical characteristics of the walk-slip fault to realize the accurate calculation of the pressure boost and release strength of the conjugate zone of the conjugate walk-slip fault with opposite rotation directions, and the invention has the advantages of simple calculation process, high calculation result precision, easy operation and wide application range, and provides convenience for future oil field exploration fields, in particular to walk-slip fault research.
Drawings
FIG. 1 is a schematic view of the Dongzhi No. 1 fault and Zhangjia Kou-Gaulti fault in an embodiment.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The invention relates to a method for quantitatively searching beneficial trap in a conjugate zone of a conjugate sliding fault with opposite rotation directions, which comprises the following steps:
s1: two conjugate walk-slide faults with opposite rotation directions, which are required to quantitatively represent walk-slide pressurizing strength, are definitely needed to obtain different layer coherent slices and three-dimensional seismic data volumes at the junction of the two conjugate walk-slide faults, and perform layer calibration on the three-dimensional data volumes, and the coherent slices are utilized to combine with the seismic data volumes to explain to obtain fault lines of the two conjugate walk-slide faults of each layer;
s2: obtaining the regional walk and slide direction according to regional stress field data and GPS data;
s3: and (2) taking intersection angles of two fault lines of the same layer obtained in the step (S1) as angular bisectors, respectively rotating the two angular bisectors (anticlockwise rotation when the area sliding is right-handed and the area sliding is left-handed and Shi Shun-handed) to the area sliding directions, respectively obtaining two rotation angles alpha 1 and alpha 2, and calculating to obtain the cosine values cos alpha 1 and cos alpha 2 of the two angles, namely the supercharging and decompression intensity coefficients of the conjugate zone of the conjugate sliding fault, wherein positive values represent supercharging, negative values represent decompression, and absolute values represent the relative magnitudes of the supercharging and decompression intensities.
S4: the area where the evaluation is positive is the area suitable for finding the trap of favorable scale.
Specific examples:
the present invention is further described below in connection with specific embodiments of the conjugate zone formed by the intersection of the Laizhou Bay Dongzhi No. 1 fault and the Zhangjia-Gaulti fault.
S1: obtaining each layer of coherent slice and three-dimensional data body of the intersection part of Laizhou Dong No. 1 and Zhangjiu-Gaulti fault, leading in petrel software to perform horizon calibration, and utilizing the coherent slice and the three-dimensional seismic data body to explain to obtain each layer of fault line of Laizhou Dong No. 1 and Zhangjiu-Gaulti fault; as in fig. 1.
S2: obtaining the regional slip direction of the Laizhou bay area as 32 DEG of north east by using regional stress field data and GPS data;
s3: and (3) taking an angular bisector of the intersection angle (acute angle and obtuse angle) of the two fault lines of the same layer obtained in the step (S1), respectively rotating the two bisectors anticlockwise to the region sliding direction, respectively obtaining two rotation angles, and calculating to obtain cosine values of the rotation angles, wherein the cosine values are supercharging and releasing intensity coefficients of two conjugate sliding fault conjugate regions, positive values represent supercharging, negative values represent releasing, and absolute values represent the relative magnitudes of supercharging and releasing intensities. The data are shown in Table 1:
TABLE 1
| Sequence number | α1 | α2 | cosα1 | cosα2 |
| 1 | 116.83° | 18.65° | -0.4513 | 0.9475 |
S4: the positive region (cosα2= 0.9475) is the development region of the trap of favorable scale.
In the invention, the faults adopt the Laizhou Dongzhi No. 1 fault and Zhangjia Kou-Gaolai fault.
The embodiment of the invention quantitatively characterizes the supercharging strength of a conjugate zone formed by the intersection of the Dongzhi No. 1 fault and the Zhangjia-Gaulti fault. The invention not only provides the basis for qualitatively judging the pressurization and pressure release types of two intersection areas of the rotary direction opposite to each other and the conjugate intersection sliding fault, but also provides a method for quantitatively representing the pressurization and pressure release strength, and definitely provides a favorable scale trap development part according to a quantitative representation result.
Although the function and operation of the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to the above-described specific functions and operations, but the above-described specific embodiments are merely illustrative, not restrictive, and many forms can be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the appended claims, which are included in the protection of the present invention.
Claims (1)
1. The method for quantitatively searching the favorable trap in the conjugate zone of the conjugate sliding fault with opposite rotation directions is characterized by comprising the following steps of:
s1: two conjugate walk-slide faults with opposite rotation directions, which are required to quantitatively characterize walk-slide pressurization and strength, are definitely obtained, different layer coherent slices and three-dimensional seismic data volumes at the junction of the two conjugate walk-slide faults are obtained, the three-dimensional data volumes are calibrated in layers, and the coherent slices are used for combining with the seismic data volumes to explain to obtain fault lines of the two conjugate walk-slide faults of each layer;
s2: obtaining the regional walk and slide direction according to regional stress field data and GPS data;
s3: the intersection angles of two fault lines of the same layer obtained in the step S1 are used as angular bisectors, the two angular bisectors are respectively rotated to the area sliding direction, two rotation angles alpha 1 and alpha 2 are respectively obtained, the cosine values cos alpha 1 and cos alpha 2 of the two angles are obtained through calculation, positive values represent supercharging, negative values represent pressure release, and absolute values represent the relative magnitudes of supercharging and pressure release intensity; wherein, two angular bisectors rotate as: the regional sliding is anticlockwise rotated when the regional sliding is rightwards, and the regional sliding is leftwards Shi Shun clockwise rotated;
s4: areas that evaluate positive values may be determined to find areas that are advantageous for scale trapping.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781062A (en) * | 1987-10-23 | 1988-11-01 | Amoco Corporation | Conjugate fracture systems and formation stresses in subterranean formations |
| WO2016070587A1 (en) * | 2014-11-05 | 2016-05-12 | 中国石油天然气集团公司 | Method for looking for oil and gas reservoir on the basis of trap-3d software |
| CN106569268A (en) * | 2015-10-10 | 2017-04-19 | 中国石油化工股份有限公司 | Method for quantitatively identifying type of fault structure |
| CN106646594A (en) * | 2016-09-09 | 2017-05-10 | 中国海洋石油总公司 | Shallow lithologic reservoir quantitative prediction method based on fault-sand coupling relation |
| CN108680952A (en) * | 2018-04-03 | 2018-10-19 | 刘敬寿 | A kind of strike-slip fault structural evolution analytic method |
| CN109425898A (en) * | 2017-08-21 | 2019-03-05 | 中国石油化工股份有限公司 | A method of utilizing slice, the identification tomography that vertically and horizontally develops of section |
| CN110361795A (en) * | 2019-07-30 | 2019-10-22 | 西安幔源油气勘探开发研究有限公司 | The exploitation method of the oil-gas reservoir controlled by Strike-slip faulted |
| CN110850468A (en) * | 2019-10-09 | 2020-02-28 | 中国石油大学(华东) | Method for quantitatively representing pressurization and pressure release strength of bending slip fault |
-
2020
- 2020-10-15 CN CN202011104418.9A patent/CN112255676B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781062A (en) * | 1987-10-23 | 1988-11-01 | Amoco Corporation | Conjugate fracture systems and formation stresses in subterranean formations |
| WO2016070587A1 (en) * | 2014-11-05 | 2016-05-12 | 中国石油天然气集团公司 | Method for looking for oil and gas reservoir on the basis of trap-3d software |
| CN106569268A (en) * | 2015-10-10 | 2017-04-19 | 中国石油化工股份有限公司 | Method for quantitatively identifying type of fault structure |
| CN106646594A (en) * | 2016-09-09 | 2017-05-10 | 中国海洋石油总公司 | Shallow lithologic reservoir quantitative prediction method based on fault-sand coupling relation |
| CN109425898A (en) * | 2017-08-21 | 2019-03-05 | 中国石油化工股份有限公司 | A method of utilizing slice, the identification tomography that vertically and horizontally develops of section |
| CN108680952A (en) * | 2018-04-03 | 2018-10-19 | 刘敬寿 | A kind of strike-slip fault structural evolution analytic method |
| CN110361795A (en) * | 2019-07-30 | 2019-10-22 | 西安幔源油气勘探开发研究有限公司 | The exploitation method of the oil-gas reservoir controlled by Strike-slip faulted |
| CN110850468A (en) * | 2019-10-09 | 2020-02-28 | 中国石油大学(华东) | Method for quantitatively representing pressurization and pressure release strength of bending slip fault |
Non-Patent Citations (4)
| Title |
|---|
| 与大型走滑断裂相关的旋转;张拴宏;赵越;;地质科技情报(第03期);全文 * |
| 珠江口盆地白云凹陷断裂系统形成演化及其对油气成藏的作用研究;邵大力;《中国优秀硕士学位论文全文数据库基础科学辑》(2007年第06期);全文 * |
| 致密岩石中走滑断裂内部结构及与油气成藏;王孝彦;《中国优秀硕士学位论文全文数据库基础科学辑》(2016年第04期);全文 * |
| 走滑构造变形特征及其形成圈闭分布;李明刚;吴克强;康洪全;贾怀存;程涛;;特种油气藏(第02期);全文 * |
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