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Branch horizontal well deployment method and device

A horizontal well and branch technology, which is applied in wellbore/well components, earthwork drilling, and fluid production, etc., can solve the problems of inability to accurately deploy branched horizontal wells and low well control degree.

Inactive Publication Date: 2017-08-18
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Embodiments of the present invention provide a method and device for deploying branched horizontal wells to solve the existing problem that branched horizontal wells cannot be accurately deployed when the degree of well control is not high, so as to achieve accurate deployment of branched horizontal wells Effect

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  • Branch horizontal well deployment method and device

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Embodiment Construction

[0066] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0067] Considering that the existing problems in the deployment of lateral horizontal wells are mainly that there are too few completed wells that can be used, so there will be a problem of insufficient well control. In order to effectively improve the control degree of the well, multiple virtual wells can be predicted through the completed drilling, and then the reservoir profile of the main horizontal section and the branch horizontal section of the lateral horizontal well can be determined by combining the completed drilling and virtual wells, so as to improve the well control degree. The de...

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Abstract

The invention provides a branch horizontal well deployment method and device. the method comprises the steps that the drilled vertical well position, the position of a main horizontal section of a branch horizontal well and the position of a branch horizontal section of the branch horizontal well within a work area where a to-be-deployed branch horizontal well is located are obtained; the positions of a primary virtual well and a secondary virtual well are determined; according to the drilled vertical well oil reservoir section, the oil reservoir section of the primary virtual well is determined; according to the drilled vertical well oil reservoir section and / or the primary virtual well oil reservoir section, the oil reservoir section of the secondary virtual well is determined; according to the primary virtual well oil reservoir section, the main horizontal section oil reservoir section is determined; according to the secondary virtual well oil reservoir section, the branch horizontal well oil reservoir section is determined; and according to the main horizontal section oil reservoir section and the branch horizontal well oil reservoir section, the branch horizontal well is deployed. According to the branch horizontal well deployment method and device, the technical problem that accuracy for determining the branch horizontal well oil reservoir section is low due to the fact that existing drilled wells are few is solved.

Description

technical field [0001] The invention relates to the technical field of geological exploration, in particular to a method and device for deploying branched horizontal wells. Background technique [0002] At present, branched horizontal wells are an important means of oil and gas reservoir development. The design of the horizontal section of a branched horizontal well is also the primary link in the implementation of a branched horizontal well. The design of the horizontal section directly determines whether a branched horizontal well can effectively drill Oil and gas reservoirs, and ultimately determine whether the expected production and economic benefits can be achieved. [0003] The so-called branched horizontal well is a well with a complex structure in which multiple horizontal wells radiate from the main wellbore. The horizontal section includes: main horizontal section and branch horizontal section, in which, the inclination angle of the horizontal section is at or cl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/30
CPCE21B43/305
Inventor 荐鹏杨彦东杨新标林中阔许卉王熙琼陈东亮迟红霞邱树立郜志平吴飞勇崔清宝蔡洪波才业刘慧雷霄雨樊涛
Owner PETROCHINA CO LTD
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