四川碳酸盐岩气层钻井完井损害的矿场检测及酸化效果评价

Detecting the Damage by Drilling and Completing Operation at Work-Site and Evaluating the Results of Acidizing for the Carbonate Gas Reservoirs in Sichuan.

本文采用不稳定试井方法,对川东中石炭统为主的裂缝-孔隙型气藏及川中雷一～1(T_2r_1～1)孔隙型气藏钻井、完井损害的矿场检测作了定量评价,预测了解除气层损害后的天然生产能力。在对酸化效果评价的基础上,提出了今后酸化工艺类型及规模的建议。

In this paper,the quantitative evaluation of on-the-spot detections of the damage by drilling and completing operation for the fracture-pore type gas reservoirs in eastern Sichuan which mainly belong to Middle carboniferous Series and the Lei 1-a pore type gas reservoirs in central Sichuan are done by using transient testing method, the gas productivity after the damage having been removed is forecasted and some proposals for the type and scale of acidizing technology from now on are made on the basis of evaluating acidizing results.