摘要
新场气田沙溪庙组气藏目前气压低产气井日趋增多,针对气藏产量递减较快、稳产措施效果变差等难题,开展气藏生产动态特征及开发潜力评价研究,分析沙溪庙组气藏生产动态特征,明确了影响气井产能的主控因素,建立了气井泄流半径计算新方法,基于"气井产量、压力、递减变化特征"等动态资料与"储层钻遇显示、剩余储量分布、泄流半径"等静态资料,综合筛选出"地质潜力区"与"措施潜力区"。结果表明:新场沙溪庙组气藏产量递减主要受井筒积液、配产比及自然递减综合影响;优选出X804、X806等7口措施潜力井,气井受产水影响气井产能,应加强维护,及时排液,合理控制配产比;评价证实新场JS23西部高含水区目前无法实现经济动用,X874井含气显示差,目前不具备开发价值,挖潜低产风险大;JS21气层Ⅱ类储量区仅气层东南部X895井区和南部的X906-3井区具有一定的动用潜力,Ⅲ类储量区东南部X890井区,可考虑进行挖潜论证动用。
Gas production wells become more and more in the gas reservoirs of Shaximiao Formation in Xinchang Gas Field at low gas pressure currently.In order to solve the problems of rapid decline in gas produc-tion and limit effect after stable production measures,the dynamic production characteristics and development potential of the gas reservoirs are researched.The dynamic production characteristics of the gas reservoirs in Shaximiao Formation are analyzed,and the main controlling factors affecting the gas well productivity are clarified.A new method for calculating the drainage radius of the gas wells is proposed.Based on the dynamic data such as gas production,pressure,and decline characteristics and the static data such as reservoir drilling show,remaining reserves distribution and drainage radius,the geological potential area and the measure potential area have been selected comprehensively.The results show that the production decline of the gas reser-voirs in Shaximiao Formation in Xinchang is mainly affected by the liquid loading,ratio of production and natural decline.It is preferred to develop 7 potential wells including Well X804 and Well X806.The gas well productivity is affected by the water production.The maintenance should be strengthened,and the liquid should be drained in time and the ratio of production should be controlled reasonably.The evaluation confirmed that the high-water-cut area in the west of Xinchang JS23 is unable to be produced economically.Well X874 has no development value at present for its poor gas show,and has high risk of tapping potential and low production.In the type Ⅱ reserves area in JS21 gas reservoir,X895 well block in the southeast of the gas reservoirs and X906-3 well block in the south of the gas reservoirs have certain potential only.The X890 well block in the southeast of the type Ⅲ reserves area can be considered for tapping the potential through demonstration.
作者
李兴文
王峻峰
贺敬聪
唐勇
明永兵
田传元
夏国山
Li Xingwen;Wang Junfeng;He Jingcong;Tang Yong;Ming Yongbing;Tian Chuanyuan;Xia Guoshan(SINOPEC Southwest Oil&Gas Company,Deyang Sichuan 618000)
出处
《中外能源》
CAS
2020年第1期38-42,共5页
Sino-Global Energy
关键词
新场气田
沙溪庙组气藏
生产动态
剩余气分布
开发潜力
Xinchang Gas Field
gas reservoirs in Shaximiao Formation
production dynamics
remaining gas distribution
development potential
作者简介
李兴文,硕士,工程师,2010年毕业于成都理工大学矿产普查与勘探专业,目前主要从事油气田开发工作。E-mail:273446171@qq.com
