地层测试中液垫与氮气垫的比较  

Compare between liquid cushion and nitrogen cushion in formation testing

作　　者：宋利彬 刘成[2] 付小坡[1] 

机构地区：[1]中国石油冀东油田公司钻采工艺研究院 [2]中国石油冀东油田公司勘探开发研究院,河北唐山063004

出　　处：《内蒙古石油化工》2012年第7期138-140,共3页Inner Mongolia Petrochemical Industry

摘　　要：地层测试中加垫是控制测试压差处于合理范围的基本方法,其作用在于疏通近井地带渗流孔道,诱导油气流出井筒。作为两种常用的加垫方式,液垫与氮气垫有许多相似之处,但物理性质上的差异也决定了施工形式上的不同,对二者的作用机理、工艺技术、适用范围进行比较,有助于正确认识它们的异同和优缺点所在,具体应用中应扬长避短,针对油气藏的地质特点、流体特征、井况因势利导,择优而定。Cushion in formation testing is a basic means to control differential pressure in proper range,it can clear the pore access near the hole,make the oil&gas flowing into hole easily.As two main cushioning method,they are many comparability,but their different physic character made their different operating manner,by comparing their work principle,process and applicability,we can get the difference,advantage and disadvantage of them,then we can select a better one according to a oil&gas reservoir's geological character,fluid character and well condition.

关 键 词：地层测试 储层保护 压差 注氮气 比较 

分 类 号：TE2[石油与天然气工程—油气井工程]