三个压力技术在辽河双南地区的应用

针对辽河油田双南地区钻井施工中经常出现井塌、大段划眼、卡钻等复杂情况造成钻井速度慢、费用高的现象，从力学角度分析了地层孔隙压力、坍塌压力和破裂压力(以下简称“三个压力”)，建立了该地区的三个压力剖面和三个压力的等值分布图，得出三个压力的分布规律，用实例分析了该地区出现钻井事故的原因，为提高该地区的钻井速度，降低开发成本，提供了一套行之有效的方法。

APPLICATION OF THREE TYPES OF PRESSURE TECHNOLOGY IN SHUANGNAN BLOCK OF LIAOHE OILFIELD

During driuing,for wall collapse,reaming and drill pipe sticking occurred frequently in Shuangnan block of Liaohe oilfield,they result in slow drilling rate and high drilling cost.In the view of rock mechanics,this paper analyzed formation pore pressure,collapse pressure,and fracturing pressure,and set up the three types of formation pressure profiles and distribution map and gave the distribution law of the three types of pressure.This paper also analyzed the causes of drilling trouble in the area by examples,and gave some advices or some effective methods for increasing drilling penetration rate and decreasing drilling cost.