摘要
在分析采气速度对气井采气指数的影响、对可采储量的影响和对单位地压系数采气量的影响的基础上,结合各采气速度所处的压力阶段,提出了高压异常气藏生产分为高压阶段和常压阶段,并通过对各井各阶段不同采气速度下的效果对比分析。认为高压异常气藏的合理采气速度为4％～6％,因过渡阶段压力敏感对地层的伤害,应尽量降低气井的采气速度。同时,周期性的关井复压可恢复地层部份孔隙度和渗透率,从而使高压异常气藏的生产管理得到不断完善。
Based on the influence of gas production rate on gas productivity idex, recoverable reserves and gas production of unit pressure, and combination with pressure step of each gas production rate, the paper proposes that high abnormal pressure reservoir production is classed high pressure step and atmospheric pressure step.Through comparative analysis the production effect in different gas production rate, the results show that the advisable gas production rate of high abnormal pressure reservoir is 4% - 6%. Because of layer detriment for pressure sensitivity in transient period, gas production rate of gas well should be reduced. In addition, periodical well shutdown recovered pressure can reconstitute porosity and permeability of cavy, consequently make production management of high abnormal pressure reservoir ameliorate.
出处
《钻采工艺》
CAS
2003年第B06期38-41,共4页
Drilling & Production Technology
关键词
川西梓潼地区
高压异常
高压气藏
采气速度
采气指数
Zitong region of the western Sichuan, high abnormal pressure reservoir, gas production rate, high pressure reservoir
