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Arrangement of Injection-production Well Pattern in Triangular Reservoir

A triangular, injection-production well technology, applied in the fields of fluid production, earth-moving drilling, wellbore/well components, etc., can solve problems such as low production efficiency, reduce water content, delay water breakthrough time, and improve overall recovery factor Effect

Active Publication Date: 2020-01-10
CHENGDU NORTH OIL EXPLORATION DEV TECH
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  • Abstract
  • Description
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Problems solved by technology

[0003] The purpose of the present invention is to provide the triangular oil reservoir injection-production well pattern arrangement, to solve the problem in the prior art that the injection-production well pattern arrangement of the triangular oil reservoir easily leads to low production efficiency, and realize the improvement of the triangular oil reservoir recovery rate, The purpose of reducing the water content of the produced fluid

Method used

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  • Arrangement of Injection-production Well Pattern in Triangular Reservoir

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Embodiment 1

[0023] Such as figure 1 The arrangement of the injection-production well pattern in the triangular reservoir shown in the figure, the triangle shown in the figure represents the production well 2, the square represents the adjustment well position 4, the larger circle represents the water injection well 1, and the smaller circle represents the auxiliary water injection well 3. The dotted line is an auxiliary line for easy observation, and the outer triangle represents a long and narrow triangular oil reservoir. Including a water injection well 1 and a production well 2, the water injection well 1 is set at each vertex, the midpoint of each side, and the center of gravity of the triangle, and the described production well 2 is set at the connection line between the center of gravity and each vertex, the center of gravity and each side point connection. A number of auxiliary water injection wells 3 are arranged at equal intervals between each vertex of the triangle and the midp...

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Abstract

The invention discloses a triangular reservoir injection-production well pattern. The triangular reservoir injection-production well pattern comprises injection wells and production wells, wherein the injection wells are arranged on the vertexes of a triangle, the midpoints of sides of the triangle and the gravity center of the triangle; the production wells are arranged onto the connecting lines between the gravity center and the vertexes as well as the connecting lines between the gravity center and the midpoints of the sides. The triangular reservoir injection-production well pattern aims at solving the problem of triangular reservoir injection-production well patterns in the prior art are prone to leading to low production efficiency, and achieving the aim of improving the recovery efficiency of triangular reservoirs and reducing the water content of produced fluids.

Description

technical field [0001] The invention relates to the field of well patterns in oil and gas fields, in particular to the arrangement of injection-production well patterns in triangular oil reservoirs. Background technique [0002] Well pattern refers to the distribution of oil, gas and water injection wells during the development of oil and gas fields. It is an important link in the development plan of oil and gas reservoirs, which is related to the efficiency of oil field development, ultimate recovery rate and economic benefits of oil field development. In the prior art, for the layout of the well pattern in the reservoir, the total geological reserves of the reservoir are divided by the controlled reserves of a single well obtained from the conventional well test to obtain the required number of production wells, and then use this as the basis. According to the basis, a row of production wells corresponds to a row of water injection wells, so that a grid-like well pattern s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/30E21B43/20
CPCE21B43/20E21B43/30
Inventor 徐兵邓勇邓强黄进腊何巍成一
Owner CHENGDU NORTH OIL EXPLORATION DEV TECH
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