大张坨地下储气库运行模式分析  

THE OPERATION MODE FOR DAZHANGTUO UNDERGROUND GAS RESERVOIR

作　　者：张幸福[1] 谢广禄[1] 曾杰[1] 张延波[1] 

机构地区：[1]中国石油大港油田分公司,天津300280

出　　处：《天然气地球科学》2003年第4期240-244,共5页Natural Gas Geoscience

摘　　要：地下储气库在调峰和保证供气安全上有重要作用,对石油安全也有重要贡献。 介绍了大张蛇地下储气库的基本地质情况。重点分析了大张坨储气库的运行机理。该储气库从2000年底建成投产到2003年3月,累计注气8.25亿m^3,累计采气8.03亿m^3。该储气库的运行特点为:①注气井的吸气能力受储层有效渗透率和平均有效厚度影响;②在注气压力能够克服水体渗流阻力的情况下,气藏边部水体的低压区(板中)缓慢移动,引起库扩大;③只要地层压力不低于储气库下限运行压力,单井产量可达50～60万m^3/d;④气水边界随着压力上升而外移;⑤该库平面连通性好;⑥有效工作气量小。 介绍了对大张坨地下储气库采取的优化运行措施。This article introduces the general outline of Dazhangtuo Underground Gas Reservoir (UGR) , summarizes and analyzes the mode of management and operation for this reservoir. From beginning of being putting into service at the end of 2000 till March of 2003, its sum total amount of gas injection is 0. 825 billion cubic meters, and of gas recovery is 0. 803 billion cubic meters. Its recent operation principle is as follows: I Absorption capacity of injection well is influenced by the effective permeability in the reservoir formation and average effective thickness; II On condition that injection pressure is able to resist the permeating from fluid, the fluid in low-pressure area in the gas reservoir (Banzhong) move slowly, thus UGR is expanded; III Its effective working gas amount is about 0. 5 billion cubic meters; IV As long as formation pressure is not below the minimum operation pressure of UGR, the production capacity of single well is up to 500-600 thousand cubic meters per day; V The interface between gas and water move outside along with pressure increase of UGR, and the gas reservoir have good flat connection; VI The effective working gas amount is little. At last, the article produces detailed operation methods how to make optimization of operation.

关 键 词：大张坨 天然气 地下储气库 注气 采气 运行模式 优化运行 

分 类 号：TE122.2[石油与天然气工程—油气勘探]