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A Stratum Model Construction Method

A stratum model and stratum interface technology, applied in the field of stratum model construction, can solve problems such as direct application

Active Publication Date: 2021-09-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These existing technologies cannot be directly applied to geosteering software, so more practical formation modeling methods are needed in field geosteering applications

Method used

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  • A Stratum Model Construction Method
  • A Stratum Model Construction Method
  • A Stratum Model Construction Method

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Embodiment Construction

[0026] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0027] Also, in the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without the specific details or in the particular manner described.

[0028] In addition, the steps shown in the flow dia...

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Abstract

A method for constructing a formation model, comprising: acquiring gamma-while-drilling data of a working well, projecting a first gamma curve formed by the gamma-while-drilling data of the working well on a shaft axis of a vertical well, and obtaining apparent gamma of the working well curve, according to the second gamma curve formed by the acquired gamma data of the reference vertical well and the apparent gamma curve of the working well, it is determined from the apparent gamma curve that it matches the first characteristic point in the second gamma curve The second feature point is determined from the first gamma curve, and the third feature point corresponding to the second feature point is determined; according to the straight-line distance between the reference vertical well and the working well, the first feature point and the third feature point are connected to form the formation The boundary line is calculated, and the angle of the formation boundary line is calculated, and the preset initial formation model is modified according to the formation boundary line and its angle. Compared with the existing method for purchasing and constructing the formation model, the method can automatically correct the formation model on the spot, thereby making the formation model more accurate.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration and development, in particular to a formation model building method. Background technique [0002] Since most oil and gas exploration and development at home and abroad have entered the middle and late stages, the newly developed reservoirs are mainly marginal reservoirs, independent small reservoirs, complex fault block reservoirs, ultra-thin reservoirs and other hard-to-produce reserves. These complex reservoir geology The structure greatly increases the cost and difficulty of exploration and development. To develop these reservoirs, geosteering while drilling is being used more and more. Through the application of geosteering technology while drilling, the wellbore trajectory control level and the effective drilling rate of reservoirs can be greatly improved. [0003] In geosteering while drilling, how to accurately construct the formation model and accurately judge the formatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/05
CPCG06T17/05
Inventor 王卫倪卫宁张卫李永杰吴非
Owner CHINA PETROLEUM & CHEM CORP