利用测井精细解释方法分析龙门山前缘南段典型构造的广义地层压力  

ANALYSIS OF THE FORMATION PRESSURE OF TYPICAL STRUCTURES IN THE SOUTH OF LONGMEN MOUNTAIN FRONT BY USING THE DETAILED LOGGING INTERPRETATION METHODS

作　　者：郑有成[1] 凌忠[2] 

机构地区：[1]西南油气田公司勘探事业部 [2]四川石油管理局钻采工艺研究院

出　　处：《钻采工艺》2007年第5期4-6,共3页Drilling & Production Technology

摘　　要：龙门山逆掩推覆带南段的前缘坳陷分布了众多的北东向构造,2000年以来各个构造钻井问题表现相当复杂,井漏、井眼垮塌事故给钻井施工带来较大难度,导致钻井周期的增加。利用测井精细解释方法分析了龙门山前缘南段典型构造的孔隙压力、破裂压力和坍塌压力及其特征,结合实钻资料剖析了该地区主要的钻井工程地质问题,提出了保持井眼稳定、提高钻速的技术对策建议。A number of north-east trending structures distributed in the sag of south part of Longmen mountain overthrust nappe. There are many problems arising during drilling those structures since 2000, such as lost circulation or borehole collapse, which causes big difficulties for the operation and result in a long drilling cycle. In this paper, using the detailed logging interpretation method analyzed the pore pressure, frac pressure, collapse pressure as well as other characters of the typical structures in the Longmen mountain front. Combined with the drilling data acquired in this area, the key drilling engineering geology problems was analyzed and the corresponding technical measures were put forward for keeping the hole stability and improving the penetration rate.

关 键 词：龙门山构造带 三压力测井解释 井眼稳定 技术对策 

分 类 号：P631.84[天文地球—地质矿产勘探]