Spatial homing method for highly deviated wells

A space homing and high-inclination well technology, which is applied in earthwork drilling, wellbore/well components, measurement, etc., can solve problems such as well deviation errors and well trajectory errors, and achieve good operability, simple application, and high-tech clear thinking effect

Active Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a space homing method for highly deviated wells, which solves the problem of well trajectory errors caused by well deviation errors that may occur during the drilling process, and realizes the purpose of reasonable space homing of highly deviated wells

Method used

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  • Spatial homing method for highly deviated wells
  • Spatial homing method for highly deviated wells
  • Spatial homing method for highly deviated wells

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Embodiment Construction

[0018] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.

[0019] like figure 1 as shown, figure 1 It is a flow chart of the highly deviated well space homing method of the present invention.

[0020] In step 101, stratigraphic correlation is carried out for completed wells and the oil-gas-water contact is determined to determine whether there is a contradiction in the oil-gas-water relationship. Firstly, the well deviation data provided by drilling are displayed in three-dimensional space, and the relative relationship with the surrounding wells is preliminarily judged whether it is reasonable. Then carry out stratigraphic comparison with the surrounding wells, and accurately divide the sublayers according to the comparison marks in the area. For the sublayers that encounter the oil-gas-water contact,...

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Abstract

The invention provides a highly-deviated well space in-place method. The highly-deviated well space in-place method comprises the steps that whether contradiction exists in an oil, gas and water relation or not is judged; according to a stratigraphic correlation relation, a small-layer top face structural map is made, and whether a structural tendency is reasonable or not is judged; well drilling and well logging hole-deviation correction sand body bushing altitude depths are compared, and whether a difference exists or not is judged; a well required to perform space in-place operation is comprehensively determined, and the depth correction value is determined; the corrected depth is applied to making the small-layer top face structural map, and if the structural tendency is reasonable and no contradiction exists in an oil, gas and water interface, correction is completed. According to the highly-deviated well space in-place method, an effective method which can determine the reasonable space position is provided for a highly-deviated well which affects the development effect and is caused by the position space error caused by well deviation error in the well drilling process. The method has the good operation, creativeness and practicability and facilitates popularization.

Description

technical field [0001] The invention relates to the research field of geological fine oil reservoir description in petroleum development, in particular to a space homing method for highly deviated wells. Background technique [0002] With the development of computer technology, 3D visualization has gradually been realized in geological reservoir research. Through 3D visualization, it is possible to understand the real distribution of oil wells underground more intuitively and clearly. Moreover, with the advancement of drilling technology, various well types are also fully used in oilfield development, especially highly deviated directional deviated wells have been widely used. The well inclination data of completed drilling is determined by the inclination angle and azimuth angle measured by the wireless measurement-while-drilling instrument during the drilling process. Due to the influence of various factors, some wells will have large errors, which will affect the results...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00
Inventor 杜玉山张海娜李健孟阳王峰聂鑫刘利彭道贵孙志勇唐晓红许彦群
Owner CHINA PETROLEUM & CHEM CORP
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