石油钻采工艺2018，Vol.40Issue(1)：33-39,7.DOI:10.13639/j.odpt.2018.01.006
强抑制水基钻井液在连续管侧钻井中的应用
Application of strong-inhibition water based drilling fluid to side tracking of coiled tubing
摘要
Abstract
Fahaniu Block in Liaohe Oilfield is faced with serious mud making, prominent borehole wall instability, difficult rock carrying during coiled tubing drilling and frequent sticking. To solve these problems, a strong-inhibition water based drilling fluid system was developed after polyamine inhibitor, blocking agent and high-efficiency lubricant were selected. And then its performance was evaluated in laboratory. It is shown that this system is resistant to the temperature of 180 ℃, the salt of 20%, calcium of 5% and drilling cuttings of 25%. Its rolling recovery rate of cuttings is 98.7%, and core permeability recovery is more than 90%. It can block the fractures of 0.1-0.3 mm. And furthermore, its pressure bearing capacity and flowback resistance are higher and its lubricity is similar to that of oil based drilling fluid. When this strong-inhibition water based drilling fluid was applied in Well Fa 51-NEW 161C, the field test well of coiled tubing, its performance was stable and adjustable and drilling was improved with excellent sand carrying capacity, high rate of penetration (ROP), regular well diameter, and remarkable reservoir protection effect. In conclusion, this strong-inhibition water based drilling fluid system can meet the technical requirement of the coiled tubing drilling in the mud shale formation and it is worth popularizing and applying.关键词
水基钻井液/连续管/小井眼/井壁失稳/抑制性/封堵性/润滑性Key words
water based drilling fluid/coiled tubing/slim hole/wellbore instability/inhibition/plugging property/lubricity分类
能源科技引用本文复制引用
王晓军,李俊杞,孙云超,鲁政权,蒋立洲,王丽君..强抑制水基钻井液在连续管侧钻井中的应用[J].石油钻采工艺,2018,40(1):33-39,7.基金项目
国家科技重大专项"深井超深井优质钻井液与固井完井技术研究"(编号:2016ZX05020-004) （编号:2016ZX05020-004）
中国石油天然气集团公司科学研究与技术开发项目"连续管侧钻井技术与装备现场试验"(编号:2015F-2001). （编号:2015F-2001）
