摘要
位于大兴断层下降盘的兴9砾岩体气藏属构造—岩性双重控制的凝析气藏,边底水不活跃,属弹性气驱的气藏。气藏高含凝析油,最大反凝析液量高,储层非均质性强。开发特征表现出定容封闭气藏开发特点。针对兴9凝析气藏特征,就开发方式、井距、合理的气井产量及工艺技术等方面提出了适合该气藏的开发方案。通过4种计算井距方法的对比,采用800m井距的不规则三角形井网,采用单点测试与矿场实际生产分析,结合气井最小携液气量计算结果,确定气井的合理产气量,合理控制气井的生产压差,提高凝析油采收率。针对气藏开发过程中出现的问题,提出了相应的对策;并对气藏开发中的一些新工艺、新技术进行摸索。积极探索、创新"负压开孔"试气工艺以及连续气举、"以高带低"排水采气工艺。为同类气藏的合理高效开发提供经验。
Located at the bottom wall of Daxing fault,Xing 9 condensate gas reservoir is ga^eondensate reservoir with litho structural characteristic, whose edge and bottom water are not active. It is the elasticsoluble gas-drived gas reservoir with high content of condensate and maximum retrograde condensed liquid. Its development is charac- terized by that of a closed constant-volume gas reservoir. This paper provides a suitable program including operation methods,well spacing, reasonable well production and technology adopted based on the reservoir characteristics. Four well-spacing methods are compared,and the anomalous triangular well pattern of 800m is adopted. Combined with minimum liqui＆carrying capability of the gas,reasonable gas output per well is determined to control pressure difference reasonably and enhance condensate oil recovery by adopting the single-point test and analyzing the field production. This study proposes some strategies for the problems of the gas reservoir and seeks for some novel technologies, such as gas testing technology with perforating under negative pressure and discharge water with con- tinuous high-pressure-promoting. All of the methods are applied to Xing 9 gas reservoir successfully,which pro vides references for dficient and rational development of similar reservoirs.
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2013年第5期1022-1026,共5页
Natural Gas Geoscience
基金
中国石油天然气股份公司华北油田分公司科研项目(编号:2012-HB-B03)资助
关键词
凝析气藏
大兴砾岩体
开发特征
廊固凹陷
Gas-condensate reservoir
Daxing conglomerate
Development characteristics
Langgu Sag
