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Method for geologic modeling with horizontal well data during drilling

A technology for geological modeling and horizontal wells, applied in special data processing applications, instruments, electrical digital data processing, etc., which can solve problems such as large well spacing, restrictions on the accuracy of 3D geological models, and no well logging

Inactive Publication Date: 2017-01-25
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0002] Precise 3D geological modeling is the basis for reservoir numerical simulation and oilfield development plan formulation. However, the actual situation often encountered in actual work is that some blocks are mostly developed with horizontal wells, with few vertical wells and large well spacing. It is difficult to effectively control the whole area only by vertical well data, which seriously restricts the accuracy of the 3D geological model
Although the horizontal wells are relatively dense, none of them have been logged, and only limited data such as curves while drilling can be used

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  • Method for geologic modeling with horizontal well data during drilling
  • Method for geologic modeling with horizontal well data during drilling
  • Method for geologic modeling with horizontal well data during drilling

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Embodiment Construction

[0026] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.

[0027] Such as figure 1 as shown, figure 1 It is a flow chart of the method for geological modeling of horizontal well drilling data of the present invention.

[0028] In step 101, the structural framework is established according to the vertical well data, and the structural framework is partially restrained and corrected layer by layer according to the horizontal well drilling data. The process goes to step 102.

[0029] In step 102, use the logging data of cored wells in this block and the results of laboratory analysis in the core room to fit the relationship curve formula between shale content and GR value, the relationship formula between porosity and shale content, and the relationship formula between permeability and GR value. The relationsh...

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Abstract

The invention provides a method for geologic modeling with horizontal well data during drilling. The method includes the steps that according to vertical well data, a tectonic framework is established and locally strained and corrected, and a tectonic model is established; by the utilization of a target work area core hole logging data and core indoor experiment analysis results, a relation curve formula of shale content and a well logging GR value is fitted, a relation formula of porosity and shale content is fitted, and a relation formula of permeability and porosity is fitted; porosity data and permeability data needed for three-dimensional geologic modeling are obtained through calculation; in combination with a resistance curve while drilling, abnormal data, not according with corresponding geological recognition, in the porosity data and the permeability data is recognized and corrected; attribute modeling is conducted, and a precise three-dimensional geological mode of a target work area is established. According to the method for geologic modeling with the horizontal well data during drilling, hierarchical data and attribute data involved in modeling are encrypted, uncertainty caused by too large vertical well distance is compensated for, and the precision of three-dimensional geological modeling is improved.

Description

technical field [0001] The invention relates to the technical field of oilfield development, in particular to a method for performing three-dimensional geological modeling using horizontal well drilling data. Background technique [0002] Precise 3D geological modeling is the basis for reservoir numerical simulation and oilfield development plan formulation. However, the actual situation often encountered in actual work is that some blocks are mostly developed with horizontal wells, with few vertical wells and large well spacing. It is difficult to form an effective control over the whole area only by vertical well data, which seriously restricts the accuracy of the 3D geological model. Although the horizontal wells are relatively dense, they have not been logged, and only limited data such as curves while drilling can be used. Conventional modeling methods usually need to use the acoustic transit time data in the logging data to calculate the reservoir properties such as p...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 韩文杰李伟忠赵衍彬战艾婷梁金萍牛丽娟于建梅曹秋颖刘西雷崔卫东宿文浩路言秋吴兆徽陈明铭杨鹏马健孙钰
Owner CHINA PETROLEUM & CHEM CORP
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