摘要
渤海旅大区块新近系地层疏松、砾石含量高,导致钻井取心收获率低;通过研究储层地层岩性特点,分析岩性对取心收获率的影响,优选取心钻头和取心工具,优化取心钻进参数和取心工艺,形成了渤海旅大区块松散砂砾岩地层钻井取心技术。该技术在LD5-2N-2井现场应用,取心进尺204.00m,心长166.60 m,平均收获率81.7%,提高了同类地层取心收获率,具有推广应用前景。
Neogene strata of Bohai Lvda block is loose and of high gravel content,which led to low drilling core recovery.Through characteristics research of the reservoir lithology and its effect on drilling core recovery,the core drilling bit,coring tools,core drilling and coring process parameters have been preferably selected,and the coring drilling technology of loose conglomerate of Bohai Lvda block formation has been formed.The technology application results in LD5-2N-2 well show the coring footage is 204.00 m,the coring length is 166.60 m,with average recovery rate of 81.7%.The technology can improve the drilling core recovery and be of good application prospect.
出处
《石油地质与工程》
CAS
2015年第5期104-106,148-149,共3页
Petroleum Geology and Engineering
