Method for optimizing horizontal drilling azimuth of shale formation

A stratum and azimuth technology, applied in the field of geological exploration, can solve problems such as insufficient to guide the drilling direction of the drill bit, optimization, etc., to achieve the effect of reducing exploration and development costs and improving development efficiency

Active Publication Date: 2019-05-17
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0009] The above theoretical analysis is not enough to guide the optimization of the drilling direction of the drill bit when drilling horizontal wells

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  • Method for optimizing horizontal drilling azimuth of shale formation
  • Method for optimizing horizontal drilling azimuth of shale formation
  • Method for optimizing horizontal drilling azimuth of shale formation

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Embodiment Construction

[0049] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so that implementers of the present invention can fully understand how the present invention uses technical means to solve technical problems, and achieve the realization process of technical effects and according to the above-mentioned realization process The present invention is implemented concretely. 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.

[0050] With the development of geological exploration and development technology, drilling construction is not limited to vertical wells. For example, in fracturing construction, it is necessary to drill horizontal wells. The purpose of drilling horizontal wells in shale ...

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Abstract

The invention discloses a method for optimizing a horizontal drilling azimuth of a shale formation. The method comprises the following steps: obtaining an azimuth angle of a formation shear fracture type fracture plane; optimizing a drilling azimuth according to the azimuth angle of the shear fracture type fracture plane. The method optimizes the drilling azimuth according to the azimuth of the shear fracture plane, is convenient to form a network fracture in case of formation fracturing, reduces the exploration and development cots of a shale gas formation, and improves the development efficiency of the shale formation.

Description

technical field [0001] The invention relates to the field of geological exploration, in particular to a method for optimizing the horizontal drilling orientation of shale formations. Background technique [0002] In the field of geological exploration and development, drilling construction is an indispensable technical means. During the drilling construction process, under the condition of vertical well, the drilling direction of the drill bit is consistent with the direction of the force of the drill bit, and it is easier to drill in the direction perpendicular to the layer than in the direction parallel to the layer; when drilling in an inclined layer, the direction of the drill bit will be Inconsistent with the direction of the force applied by the drill bit, the borehole wall may collapse or collapse under low drilling fluid density. [0003] Therefore, in order to achieve the expected drilling effect, it is necessary to optimize and adjust the force direction of the dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04E21B49/00
Inventor 廖东良路保平陆黄生
Owner CHINA PETROLEUM & CHEM CORP
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