Water Absorption Capacity Evaluation of X Oilfield Based on Reasonable Formation Pressure

doi:10.12388/j.issn.1673-2677.2024.02.006

Abstract

Abstract:

Formation pressure is an important factor affecting the injection pressure and water absorption capacity of water injection wells，and maintaining reasonable formation pressure is the basis of stable oilfield production. In view of the oil well production reduction caused by formation pressure difference between Blocks A and B of X Oilfield，this paper evaluates the formation pressure of X Oilfield using the production indicator curve method combined with the production performance of oil and water wells，determines the reasonable formation pressure of X Oilfield，plots the relationship chart between water absorption index and formation pressure in cases of different volumes of injected water，and develops the formation pressure recovery scheme. The results show that the formation pressure of Block A is within the reasonable range，and that of Block B is relatively low，indicating that the injection well should be replenished for more injected water. Moreover，the actual water injection in the two blocks is low，and the intensity of water injection should be further improved. The presented evaluation method of oilfield water absorption capacity based on reasonable formation pressure plays an important role in guiding oilfield waterflooding development.

Key words:

formation pressure, water absorption capacity, waterflooding development, injection-production system, injection-production ratio

摘要：

地层压力是影响注水井的注入压力和吸水能力的重要因素，保持合理地层压力是实现油田稳产的基础。针对X油田A、B两个区块地层压力差异导致的油井产液降低的问题，采用生产指示曲线法结合油水井生产动态对X油田的地层压力进行了评价，确定了X油田的合理地层压力，构建了不同注水量下吸水指数与地层压力的关系图版，给出了地层压力恢复方案。研究结果表明，目前A区块处于合理地层压力范围内，B区块地层压力偏低，应补充注入井注水量；同时两区块实际注水量均偏低，应进一步提高注水强度。基于合理地层压力的油田吸水能力评价方法对油田水驱开发具有重要指导作用。

关键词:

地层压力, 吸水能力, 注水开发, 注采系统, 注采比

CLC Number:

TE357 ','1');return false;" target="_blank">
TE357

CAO Guangsheng, GE Tiantian, LI Yaoqing, MENG Sinuo, LI Tianqing.

Water Absorption Capacity Evaluation of X Oilfield Based on Reasonable Formation Pressure

[J]. Xinjiang Oil & Gas, 2024, 21(2): 48-.

曹广胜, 戈甜甜, 李耀卿, 蒙思诺, 李天晴.

基于合理地层压力的X油田吸水能力评价

[J]. 新疆石油天然气, 2024, 21(2): 48-.

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