Method for improving recovery of fault block reservoirs by water injection by pressure drive

By optimizing pressure-driven water injection parameters and well opening strategies in fault-block reservoirs, the problem of low recovery rate in medium-permeability fault-block reservoirs was solved, achieving rapid energy replenishment and improved recovery rate, providing a new method for enhancing oil recovery.

CN116927733BActive Publication Date: 2026-06-23CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2022-04-07
Publication Date
2026-06-23

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Abstract

The present application provides a method for improving the recovery of fault block reservoir by water injection, which comprises the following steps: step 1, selecting a target area, the selection principles including fault block sealing property, necessity of water injection and well condition of oil and water wells; step 2, determining water injection parameters, including water injection well, water injection amount in water injection cycle, water injection speed, water injection pressure, water injection mode and well shut-in cycle; step 3, determining the well opening strategy after water injection, including well opening sequence of oil wells and working system after well opening. The method for improving the recovery of fault block reservoir by water injection has important significance for the development effect of water drive fault block reservoir, and finds a new direction for the recovery enhancement technology of water drive reservoir.
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Citation Information

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