义284区块定向防塌钻井液技术
The anti-caving drilling fluid technology during the process of directional drilling in Yi 284 block
邱春阳 1宋翔远 1孙金波 2秦涛 1刘霞继 1王伟1
作者信息
- 1. 中石化胜利石油工程有限公司钻井液技术服务中心,山东 东营 257000
- 2. 中石化胜利石油工程有限公司难动用项目管理中心,山东 东营 257000
- 折叠
摘要
义284区块位于济阳坳陷沾化凹陷渤南洼陷北部陡坡带,由于该区块地质构造复杂,定向过程中钻井液井壁稳定、井眼净化及润滑防卡技术难度大.通过优选处理剂,构建聚胺强抑制润滑防塌钻井液体系,该体系在义284区块8口井进行了现场应用,配合现场钻井液维护处理工艺,结果发现:钻进过程中井壁稳定,井眼净化效果好,定向顺畅,目的层井段平均井径扩大率为6.52%;与区块前期施工井相比,平均钻井周期降低8.41%,平均完井周期降低9.13%,平均机械钻速提高9.17%,达到了优快钻井的良好效果.
Abstract
Yi 284 oilfield was located to the northern steep slope zone of Bonan depression on Zhanhua de-pression in Jiyang depression.Due to the complex geological structure of the block,the drilling fluid technolo-gy including borehole stability,the wellbore purification,lubrication and anti-jamming were difficult.Through the optimal treatment agent,the polyamine drilling fluid system with strong inhibition and lubrication anti-col-lapse ability was constructed,and the system was applied on site in 8 wells in Yi 284 block,and combined with on-site drilling fluid maintenance and treatment technology,the wellbore wall was stable during the drill-ing process,the wellbore purification effect was good,and the directional flow was smooth.The average well-bore enlargement rate of the target layer was 6.52%.Compared with the pre construction wells in the block,the average drilling cycle was decreased by 8.41%,the average completion cycle was decreased by 9.13%,and the average mechanical drilling speed was increased by 9.17%.At last,the good effect of fast and optimal drill-ing was achieved.
关键词
定向防塌/井眼净化/润滑防卡/聚胺强抑制/井壁稳定/钻井液Key words
directional anti-collapse/borehole cleaning/lubrication and anti-jamming/polyamine with strong inhibition/borehole stability/drilling fluid引用本文复制引用
出版年
2024
NETL
NSTL
万方数据