一种三元复合驱采出井热洗防蜡方法
By customizing the hot washing cycle according to the specific stage and composition characteristics of the produced well, the problem of ineffective hot washing and pump jamming caused by shortening the hot washing cycle in ternary composite flooding produced wells is solved, and a more efficient hot washing and wax prevention effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DAQING OILFIELD CO LTD
- Filing Date
- 2022-11-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing ternary composite flooding wells use a shortened hot washing cycle for wax prevention, which leads to frequent problems of ineffective hot washing and pump jamming during hot washing.
The production stage of the well is determined based on the content of wax, gum and bituminous substances, production volume, water content, surfactant content, alkali content and calcium and magnesium ion content. A reasonable hot washing cycle is selected according to the production stage, and a single-well hot washing method is customized to extend or stop the hot washing operation.
It effectively solved the problems of ineffective hot washing and pump jamming caused by shortening the hot washing cycle in ternary composite flooding wells, extended the average hot washing cycle, reduced the number of hot washing cycles, and improved oil production efficiency.
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