论文部分内容阅读
1.前言DP35-1井是我局在大牛地气田所钻的第二口天然气水平井,并取得了成功,该井在直井段和斜井段应用了低固相强抑制性阳离子聚合物钻井液体系;在水平段首次应用了全酸溶、强抑制性聚合物钻井液体系。该体系在现场施工中表现了良好的热稳定性和优良的钻井液性能,基本上解决了水平井钻井液公认的技术难题,如长时间侵泡的井壁稳定问题、润滑降摩阻问题和大斜度井段有效携砂问题等。
1. Introduction DP35-1 well is the second natural gas horizontal well drilled by our bureau in the Daniudi gas field and has been successful. The well used low-solid-phase strongly-inhibiting cationic polymer Drilling fluid system; the first time in the horizontal section of the all-acid-soluble, strong inhibitory polymer drilling fluid system. The system shows good thermal stability and good drilling fluid performance in on-site construction and basically solves the recognized technical problems of horizontal well drilling fluid, such as wellbore stability problems caused by prolonged bubbling, lubrication drop friction resistance problems and Great inclination of the well section carrying sand and so on.