论文部分内容阅读
川东C2 h1储层非均质性强 ,低渗透储量占有较大比例。为了提高气藏采收率 ,合理高效开发气田 ,必须对C2 h1低渗透储层进行改造。该储层在 1 998年前曾进行 44井次压裂酸化改造 ,有效率 50 %。文中在研究前人经验成果的基础上 ,通过分析影响C2 h1储层改造的因素 ,找到在储层发育情况、储层埋藏深、地层破裂压力高、压井液漏失、酸化工艺、施工参数、排液不及时和设备故障等造成酸压效果差的因素 ,提出了 6点建议 ,以对C2 h1储层进行综合改造。
The C2 h1 reservoir in East Sichuan is characterized by strong heterogeneity and low-permeability reserves. In order to improve gas recovery rate and develop gas field with reasonable efficiency, C2 h1 low permeability reservoir must be reformed. The reservoir was fractured and acidified in 44 wells by 1998, with an efficiency of 50%. Based on the research results of predecessors, by analyzing the factors influencing C2 h1 retrofit, the author found some problems in reservoir development, such as reservoir development, deep reservoir burial, high formation fracture pressure, fluid loss, acidification process, construction parameters, 6-point suggestion was put forward to comprehensively rehabilitate the C2 h1 reservoir by improperly draining liquid and causing equipment failure.