板桥油田挥发油藏递减规律研究及控递减技术对策
Research on the Decline Law of Volatile Oil Reservoirs in Banqiao Oilfield and Countermeasures for Controlling Decline
梅蓉 1胡子龙 1王静 1于淼1
作者信息
- 1. 中国石油大港油田分公司第四采油厂,天津 300280
- 折叠
摘要
板桥油田为复杂断块油藏,构造破碎,发育多套挥发油藏,生产特征主要表现为:①油气井自喷能力强,初期高产,油气同出;②压力下降快,产量递减大:压力下降速度1.24 MPa/月,地层压力下降20%时,油井面临停喷;③注水开发适应性差:受构造储层影响,井组多为1注1采,水驱方向单一.同时常规注水困难,70%需使用增注泵注水.砂体条带状分布,注采井网平行于主应力方向,注水见效有效期短,注入水易水窜.通过对挥发油藏产量递减原因及规律分析,提出相应的产量控递减技术对策.
Abstract
Banqiao Oilfield is a complex fault block oil reservoir with fractured structures and developed multiple sets of volatile oil reservoirs.The production characteristics are mainly manifested as:①strong self injection ability of oil and gas wells,high initial production,and simultaneous oil and gas production;② The pressure drops rapidly and the production decreases significantly:the pressure drops at a rate of 1.24MPa/month.When the formation pressure drops by 20%,the oil well is facing a shutdown.③ Poor adaptability of water injection development:Due to the influence of structural reservoirs,the well group is mostly one injection and one production,with a single water drive direction.At the same time,conventional water injection is difficult,and 70%requires the use of an injection pump for water injection.The sand body is distributed in strips,and the injection production well network is parallel to the direction of the main stress.The effective period of water injection is short,and the injected water is prone to water channeling.By analyzing the reasons and patterns of production decline in volatile oil reservoirs,corresponding production control decline technical countermeasures are proposed.
关键词
板桥油田/挥发油藏/控递减/技术对策Key words
banqiao oilfield/volatile oil reservoir/controlled decline/technical countermeasures引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据