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Well pattern system and construction process of well pattern system

A well pattern and injection well technology, applied in wellbore/well parts, production fluid, earthwork drilling and production, etc., can solve the problems of low oil and gas production efficiency, improve displacement efficiency, reduce seepage resistance, and improve efficiency Effect

Pending Publication Date: 2022-02-22
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a well pattern system and a construction process of the well pattern system, which can solve the problem of low oil and gas production efficiency

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  • Well pattern system and construction process of well pattern system
  • Well pattern system and construction process of well pattern system
  • Well pattern system and construction process of well pattern system

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Embodiment Construction

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0041] Before explaining the embodiment of the present application in detail, the structure of the reservoir is firstly explained for ease of understanding. Reservoirs are rock formations with interconnected pores that allow oil and gas to store and flow through them. There are multiple effective reservoirs arranged along the depth direction in the reservoir, and a large amount of oil and gas can be stored in the effective reservoirs, and the oil and gas can be stored and seeped. In this way, each effective reservoir can be used as a layer to be developed. In addition, there are ineffective reservoirs between every two adjacent effective reservoirs, and the ineffective reservoirs store less oil and gas, and the oil ...

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Abstract

The embodiment of the invention discloses a well pattern system and a construction process of the well pattern system and belongs to the technical field of oil and gas exploitation. The well pattern system comprises a production well penetrating through a plurality of to-be-developed layers of a reservoir and multiple injection wells, wherein a polygon is defined by the multiple injection wells, the production well is located in an area defined by the multiple injection wells, each injection well is a vertical well, each injection well penetrates through at least one to-be-developed layer, and each injection well extends in the penetrating to-be-developed layer to form a first crack section; and the distance from each injection well to the production well in the layer to be developed is greater than the minimum distance from the first crack section of the corresponding injection well to the production well. The well pattern system is advantaged in that when the gas is injected through the injection well, the gas can be diffused in a large range in the to-be-developed layer based on the first crack section, so seepage resistance of the gas in the to-be-developed layer is remarkably reduced, displacement efficiency of the gas to petroleum is improved, and the oil and gas exploitation efficiency is improved.

Description

technical field [0001] The embodiment of the present application relates to the technical field of oil and gas exploitation, and in particular to a well pattern system and a construction process of the well pattern system. Background technique [0002] In the process of oil and gas production, the oil field is mainly exploited through the well pattern system. Different well pattern systems have different characteristics such as well type, well layout and well spacing. Whether the layout of the well pattern system is reasonable will directly affect the oil and gas production. efficiency. [0003] In related technologies, the well pattern system is mainly a five-point well pattern system, which includes a production well located in the center and four vertical wells distributed around the production well. In the production process, gas is injected into the reservoir through the vertical well to displace the oil in the reservoir and flow to the production well, and then the oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/30E21B49/00E21B43/26
CPCE21B43/30E21B43/305E21B49/00E21B43/26
Inventor 张杰张祝新王晓燕张家良张景春喻洲王伟崔丹丹章杨
Owner PETROCHINA CO LTD
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