基于合理地层压力的X油田吸水能力评价  

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

作　　者：曹广胜[1] 戈甜甜 李耀卿 蒙思诺 李天晴 CAO Guangsheng;GE Tiantian;LI Yaoqing;MENG Sinuo;LI Tianqing(Key Laboratory of Ehanced Oil and Gas Recovery of Ministry of Education,Northeast Petroleum University,Daqing 163318,Heilongjiang,China)

机构地区：[1]东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163318

出　　处：《新疆石油天然气》2024年第2期48-55,共8页Xinjiang Oil & Gas

基　　金：国家自然科学基金面上项目“枯竭油藏型储气库二氧化碳作垫层气机理及注采动态规律研究”(52174020)。

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。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 re⁃duction 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,deter⁃mines 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 reason⁃able formation pressure plays an important role in guiding oilfield waterflooding development.

关 键 词：地层压力 吸水能力 注水开发 注采系统 注采比 

分 类 号：TE357[石油与天然气工程—油气田开发工程]