马井气田浅层气藏三层分压工艺研究与应用

马井气田浅层蓬莱镇组气藏均为多套砂体叠合而成,单层砂体厚度有限,平面分布连续性差,大多数井单层压裂后单井增产量有限,制约了单井产量的提高。针对三层分压对选层的要求,从压后增产的差异性和相关的储层地质参数的差异性入手,对制约压裂效果的因素进行了深入分析,单井多套砂体的纵向距离为几十米到近百米,容易实现气井的分压合采。近年来在马井气田多次实施了三层分层加砂压裂施工,实现了多层合采,大幅度地提高了单井产量,有效提升了气田的压裂开发整体经济效益。

Research and Application of Fracturing of Separate 3 Layers in Shallow Gas Reservoir in Majing Gas Field

Penglaizhen formation gas reservoir in Majing gas field is multiple-zone sand reservoir,but the single layer is very thin and the continuity of planar distribution is poor.The produc-tion promotion of single well with single layer by fracturing is low mostly,which has restricted production increase in single well.It is easy to carry out multiple - zone production by fracturing of sep-arate layers,for the vertical distance of several layers in single well is apart from 10 to nearly 100 meters.In recent years,fractu-ring of separate 3 layers has been carried out many times in Majing gas field,and gas production of single well with several layers has been increased obviously.Thus,the total economic benefit of gas field fracturing development has been improved effectively.