河南海陆过渡相页岩气水基钻井液室内评价  

Evaluation on Water-based Drilling Fluid System for Henan Sea-land Transition Phase Shale Gas Reservoir

作　　者：吕方 张古彬[2] 袁青松[2] 向兴金[3] 胡友林[3] 

机构地区：[1]荆州汉科新技术研究所,湖北荆州434023 [2]河南省地质调查院,河南郑州450000 [3]长江大学石油工程学院,湖北荆州434023

出　　处：《辽宁化工》2017年第9期903-904,914,共3页Liaoning Chemical Industry

基　　金：河南省重大科技专项项目"河南页岩气勘查开发及示范应用研究";项目号:151100311000

摘　　要：针对河南省海陆过渡相页岩气地层特征,以及钻井工程中面临的技术难点,通过低自由水络合技术和微纳米封堵技术,构建出适合海陆过度相页岩气地层钻井的水基钻井液体系。实验评价表明该体系具有良好流变性,抑制性强,钻屑回收率达到95%以上,线性膨胀率仅为6%左右;滤失造壁性好,HTHP滤失量小于10 m L;储层保护效果好,污染后岩心切片0.5 cm,渗透率恢复值达到90%左右,能够满足海陆过渡相页岩气钻井工程需要。Based on characteristics of sea-land transition phase shale gas formation in Henan province, and facing the technical difficulties in drilling engineering, through the low free water complexing technology and micro/nano sealing technology, suitable water-based drilling fluid system for marine facies shale gas drilling was developed. Experimental evaluation shows that the system has good rheological property, strong inhibitory; Drilling cuttings recovery is more than 95%, the linear expansion rate is only 6% or so; HTHP filtration quantity is less than 10 m L; Reservoir protection effect is good; When polluted core section is 0.5 cm, permeability recovery value is around 90%, which can meet the needs of shale gas drilling engineering in the sea-land transition phase formation.

关 键 词：页岩气 低自由水络合剂 微纳米封堵剂 水基钻井液 

分 类 号：TE254[石油与天然气工程—油气井工程]