Determination method and device of horizontal well productivity under volume fracturing

A volumetric fracturing and horizontal well technology, which is applied in the direction of production fluid, earthwork drilling, wellbore/well components, etc., and can solve the problems of inaccurate horizontal well productivity and other issues

Active Publication Date: 2018-09-18
PETROCHINA CO LTD
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Problems solved by technology

[0005] The embodiment of the present application provides a method and device for determining the productivity of horizontal wells under volume fracturing, so as to solve the technical problem of inaccurate productivity of horizontal wells under volume fracturing existing in the existing methods, and achieve comprehensive analysis in different production stages. The seepage characteristics of different structural regions and the technical effect of accurately determining the productivity of horizontal wells under volume fracturing

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  • Determination method and device of horizontal well productivity under volume fracturing
  • Determination method and device of horizontal well productivity under volume fracturing
  • Determination method and device of horizontal well productivity under volume fracturing

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[0065] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0066] Considering the existing methods, only the influence of the artificial main fractures on the seepage is considered in the specific implementation, and the influence of other structural regions on the seepage is not comprehensively analyzed. As a result, when the existing methods are implemented, the productivity of horizontal wells ...

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Abstract

The embodiment of the invention provides a determination method and device of the horizontal well productivity under volume fracturing. The determination method comprises the steps that the geologicalcharacteristic parameters of a target area in which a horizontal well is located under volume fracturing are obtained; the target area is divided into a first seepage area, a second seepage area anda third seepage area; a production cycle is divided into a first production stage, a second production stage and a third production stage; the horizontal well productivity of different production stages is determined separately according to the geological characteristic parameters and the seepage characteristics of different seepage areas at different production stages, and according to the scheme, the influence of complex fracture network structures and reservoir pores on seepage under volume fracturing is taken into account, and the target area is divided into the multiple seepage areas according to the specific structural characteristics; and then according to the seepage characteristics of different seepage areas at different production stages, the horizontal well productivity of different production stages is determined separately, so that the technical problem of determining the horizontal well productivity by existing methods is inaccurate is solved.

Description

technical field [0001] The present application relates to the technical field of oil and gas development, in particular to a method and device for determining the productivity of a horizontal well under volumetric fracturing. Background technique [0002] Before oil and gas development, it is usually necessary to predict the production capacity of oil or gas wells in order to guide specific oil and gas production. [0003] At present, in order to predict the productivity of horizontal wells under volume fracturing, it is usually first to analyze the influence of artificial main fractures in the area where the production well is located after volume fracturing on seepage; Well productivity. However, because the existing methods simply consider the influence of artificial main fractures on seepage, there is often a technical problem of inaccurate horizontal well productivity under volumetric fracturing in actual implementation. [0004] For the above problems, no effective s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00E21B43/26
CPCE21B43/26E21B49/00
Inventor 刘立峰陈福利闫林童敏王拥军
Owner PETROCHINA CO LTD
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