摘要
中国南海东部西江油田群储层主要以高孔、高渗的疏松砂岩为主,泥质质量分数高,开发中存在钻井液的大量漏失,生产中地层微粒运移,泥质容易在近井壁筛管附近造成堵塞,常规的酸化解堵体系处理功能非常有限,不能针对复合伤害的问题,且对疏松砂岩骨架破坏大。针对这些问题,研发了NHD-G2复合解堵体系,通过系列试验证明,体系性能优良,并在西江24-3油田A4ST1井成功应用。
In the east of South China Sea,the reservoirs of Xijiang Oilfield Group were mainly comprised of high porosity and high permeability loose sandstones with high shale content,for serious leakage of drill fluids,particle migration in formation during production,blocking being easily induced by shale near the screen pipe of the wellbore,conventional acidizing and blocking removal system was limited to solve all the problems of composite formation damage,but also it had a serious damage on the framework of loose sandstones.In allusion to the problems,the new NHD-G2composite-acid system is developed.Test results demonstrate that NHD-G2composite-acid system has a good performance,it is successfully used in Well A4ST1 of XJ24-3Oilfield.
出处
《石油天然气学报》
CAS
CSCD
2014年第9期159-162,8,共4页
Journal of Oil and Gas Technology
关键词
复合酸
疏松砂岩
钻井液
泥质
骨架
composite acid
loose sandstone
drill fluid
shale
framework
