长庆油田浅层气地层测试工艺探讨

Discuss on Well Test Technology for Shallow Gas of Changqing Oilfield

浅层气是指埋藏深度在1500 m以内、储量较小的各类天然气资源。从浅层气的分类及特点入手,通过对浅井常规地层测试存在的困难进行分析,给出了浅井常规地层测试的解决对策,提出了部分条件下浅井测试的可行性替代方案。对于井深900~1500 m的浅井,采用延时介质改性后的常规地层测试作业,可行性较高;井深小于700 m浅井,用替代方案进行测试作业;其它有待于进一步探索。

Shallow gas refers to various kinds of reserves of the burial depth within 1500m,small in reserve.From the classification and characteristic of shallow layer gas,through analysis of the difficulties in conventional well test for the shallow wells,testing solution strategies are given for it,and the feasible alternative plans under some conditions of shallow wells are proposed.For shallow wells of depth from 900 to 1500m,feasibility is high that using the conventional well test operation by modification delay medium.Depth of shallow wells less than 700m,the alternative operation plans are conducted,and others remain to be further explored.