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Crack parameter evaluation method and device, electronic equipment and medium

An evaluation method and evaluation device technology, which are applied in the fields of electronic equipment and media, devices, and fracture parameter evaluation methods, can solve the problems of variable dip angle, difficult selection of evaluation models, and large fracture parameter evaluation errors, and achieve easy acquisition, easy computerization, etc. Programming calculation, the effect of good applicability

Pending Publication Date: 2021-12-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Judging from the existing research at home and abroad, the current evaluation methods are roughly divided into two steps. First, the type of fracture dip is judged, and then the evaluation models corresponding to the range of the dip are applied to carry out calculations. Although these evaluation methods are simple and easy to use, there are formation The mid-dip angle is variable, but there are only several fixed evaluation models, the evaluation error of fracture parameters is large, and there is a problem that it is difficult to select an evaluation model for intervals where fractures at various dip angles develop simultaneously

Method used

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  • Crack parameter evaluation method and device, electronic equipment and medium
  • Crack parameter evaluation method and device, electronic equipment and medium
  • Crack parameter evaluation method and device, electronic equipment and medium

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Experimental program
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Embodiment 1

[0094] figure 1 A flowchart showing the steps of the fracture parameter evaluation method according to one embodiment of the present invention.

[0095] Such as figure 1 As shown, the fracture parameter evaluation method includes: step 101, identifying single well fractures; step 102, evaluating the model through the double lateral component method, and calculating the vertical and horizontal components of the fracture opening; step 103, according to the vertical and horizontal components of the fracture opening component and horizontal component to calculate the composite opening, composite dip and porosity of fractures.

[0096] figure 2 A schematic diagram showing the comparison of fracture evaluation results of the tight sandstone of Well Xin X with the double lateral component method and electrical imaging according to an embodiment of the present invention.

[0097] The 4950-4970m tight sandstone section in Well Xinx has the third trace of double lateral and the four...

Embodiment 2

[0100] image 3 A block diagram of a fracture parameter evaluation device according to an embodiment of the present invention is shown.

[0101] Such as image 3 As shown, the fracture parameter evaluation device includes:

[0102] Identification module 201, identifying single well fractures;

[0103] Calculation module 202, evaluates the model through the double lateral component method, and calculates the vertical component and horizontal component of the crack opening;

[0104] The evaluation module 203 calculates the composite opening, composite dip angle and porosity of the fracture according to the vertical component and the horizontal component of the fracture opening.

[0105] As an alternative, the evaluation model of the double lateral component method is:

[0106]

[0107] Among them, C lld 、C lls is the deep and shallow lateral conductivity, C bd 、C bs is the conductivity of deep and shallow lateral bedrock, C m is the mud conductivity, d h is the vert...

Embodiment 3

[0118] The present disclosure provides an electronic device comprising: a memory storing executable instructions; and a processor running the executable instructions in the memory to implement the crack parameter evaluation method described above.

[0119] An electronic device according to an embodiment of the present disclosure includes a memory and a processor.

[0120] 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.

[0121] The processor may be a central processing unit (CPU) or other form of processing unit having data processing capa...

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Abstract

The invention discloses a crack parameter evaluation method and device, electronic equipment and a medium. The method may include: identifying a single well crack; calculating the vertical component and the horizontal component of the fracture opening through a double lateral component method evaluation model; and according to the vertical component and the horizontal component of the fracture opening, calculating the composite opening, the composite inclination angle and the porosity of the fracture. According to the invention, the depth and depth dual-lateral component opening degree combined model is established, the crack component opening degree is evaluated, then the composite crack opening degree, the composite crack inclination angle and the crack porosity are calculated, quantitative evaluation on the crack through conventional logging is achieved, and a solid foundation is laid for further crack development zone prediction, crack section productivity evaluation and the like in the later period.

Description

technical field [0001] The invention relates to the field of petroleum exploration and development, and more specifically, to a fracture parameter evaluation method, device, electronic equipment and medium. Background technique [0002] At present, in terms of logging technology, imaging logging is the best way to evaluate fractures, but this method is expensive and time-consuming, and is only used in some key exploration wells. Conventional logging is the most widely used in oil exploration and development. Curves have also been used for decades to evaluate fractures in reservoirs, including: [0003] Using the three-dimensional finite element numerical calculation method, simulate the dual laterolog response in two special cases of single horizontal fracture and single vertical fracture, and analyze the response characteristics of the two cases, and give the relationship between the logging response value and the opening degree of each ; [0004] The logging response of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/23G06Q10/06G06Q50/02G06F111/10
CPCG06F30/20G06F30/23G06Q10/0639G06Q50/02G06F2111/10
Inventor 刘志远李军李浩张军南泽宇张爱芹
Owner CHINA PETROLEUM & CHEM CORP
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