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Method and electronic equipment for depicting internal structure of fault solution of carbonate rock through phase-control inversion

A carbonate rock and internal structure technology, applied in the field of oil and gas exploration, can solve problems such as the scale and distribution of fracture-cave structures that cannot be quantified, and achieve the effects of improving exploration and development benefits, increasing success rates, and having a wide range of applications

Pending Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of this invention is to propose a method of phase-controlled inversion to characterize the internal structure of carbonate rock fault-karst body, so as to solve the problem that the scale and distribution of fracture-cavity structure inside the fault-karst body cannot be quantitatively described at present

Method used

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  • Method and electronic equipment for depicting internal structure of fault solution of carbonate rock through phase-control inversion
  • Method and electronic equipment for depicting internal structure of fault solution of carbonate rock through phase-control inversion
  • Method and electronic equipment for depicting internal structure of fault solution of carbonate rock through phase-control inversion

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Embodiment 1

[0059] figure 1 A flow chart of a method for characterizing the internal structure of a carbonate fault-karst body by phase-controlled inversion is shown according to an embodiment of the present invention. figure 2 According to an embodiment of the present invention, a method of phase-controlled inversion to characterize the internal structure of carbonate rock fault-karst body is shown through a certain well fault-karst body profile. image 3It shows a method of phase-controlled inversion to characterize the internal structure of carbonate rock fault-karst bodies according to an embodiment of the present invention, and an AFE attribute profile of a certain well. Figure 4 According to an embodiment of the present invention, a phase-controlled inversion method for describing the internal structure of carbonate rock fault-karst body is shown through a well seismic and fault-karst body boundary profile. Figure 5 It shows a post-stack constrained sparse pulse inversion impeda...

Embodiment 2

[0078] The present disclosure provides an electronic device comprising: a memory storing executable instructions; a processor running the executable instructions in the memory to achieve the above-mentioned phase-controlled inversion to characterize the interior of the carbonate rock fault-karst body method of structure.

[0079] An electronic device according to an embodiment of the present disclosure includes a memory and a processor.

[0080] The memory is used to store non-transitory computer readable instructions. Specifically, the memory may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache). The non-volatile memory may include, for example, a read-only memory (ROM), a hard disk, a flash memory, and the like.

[0081] The processor may be a central proces...

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Abstract

The invention discloses a method and electronic equipment for depicting the internal structure of a carbonate rock fault karst through phase-control inversion, and the method comprises the steps: obtaining a fault karst seismic facies and a fracture seismic facies based on original seismic data; establishing a carbonate rock straight plate low-frequency model; based on the straight plate low-frequency model, obtaining a bead seismic facies; obtaining a phase-controlled low-frequency model based on the straight-plate low-frequency model, the fault-solution seismic facies, the fracture seismic facies and the bead seismic facies; obtaining a longitudinal wave impedance data body based on the phase-controlled low-frequency model; and based on the longitudinal wave impedance data body, obtaining a porosity body of the effective reservoir body, thereby depicting the internal structure of the carbonate rock fault solution. According to the method, the distribution, development scale and connectivity of the reservoirs in the broken karst are visually described, the scale of each reservoir body in the broken karst is accurately predicted, a reliable basis is provided for well position deployment, the success rate of exploration and development drilling is increased, exploration and development benefits are improved, and the method is not limited by regions and is wide in application range.

Description

technical field [0001] The invention belongs to the technical field of oil and gas exploration, and in particular relates to a method and electronic equipment for phase-controlled inversion to characterize the internal structure of carbonate rock fault-karst bodies. Background technique [0002] In 2015, Lu Xinbian et al. proposed the concept of fault-karst body traps, which mainly refers to the dissolution and transformation of karst water infiltrating or upwelling along the fault direction to form karst fracture-cavity systems in different three-dimensional spaces. A special type of trap formed under the cover of lateral tight limestone. Influenced by the upper Ordovician strata cover in the Tahe peripheral slope area of ​​the Tarim Basin, the development of karst fractured-vuggy bodies has a good matching relationship with fault zones and structural deformation, and has obvious fault-controlled karst characteristics. Dissolution and expansion occurred in the core, making...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/50
CPCG01V1/50G01V2210/6169G01V2210/624
Inventor 马玉春黄继文焦存礼赵永强储呈林李慧莉顾忆赵锐周雨双乔桂林
Owner CHINA PETROLEUM & CHEM CORP