高性能水基钻井液在中原小井眼侧钻水平井中的应用  

Application of high performance water-based drilling fluid at slim hole sidetracking horizontal wells in Zhongyuan Area

作　　者：赵虎[1,2] 王中华[1,2] 司西强[1,2] 吴协力 燕鹏 ZHAO Hu;WANG Zhonghua;SI Xiqiang;WU Xieli;YAN Peng(Drilling and Completion Fluid Technology Center of Petroleum Engineering,SINOPEC,Puyang 457001,China;Research Institute of Drlling Engineering Technology,Zhongyuan Petroleum Engineering Co.,Ltd.,SINOPEC,Puyang 457001,China;No.1 Drilling Company,Zhongyuan Petroleum Engineering Co.,Ltd.,SINOPEC,Puyang 457001,China;Southwest Drilling Company,Zhongyuan Petroleum Engineering Co.,Ltd.,SINOPEC,Chengdu 610051,China)

机构地区：[1]中国石化石油工程钻完井液技术中心,河南濮阳457001 [2]中国石化中原石油工程有限公司钻井工程技术研究院,河南濮阳457001 [3]中国石化中原石油工程有限公司钻井一公司,河南濮阳457001 [4]中国石化中原石油工程有限公司西南钻井分公司,四川成都610051

出　　处：《精细石油化工进展》2023年第6期1-5,共5页Advances in Fine Petrochemicals

摘　　要：中原工区为挖潜老油田的剩余产能、降低钻井成本,逐渐部署开窗侧钻水平井。开窗侧钻水平井存在泥页岩含量高、井壁易失稳,短半径水平井模式狗腿度大、定向易托压,小井眼环空压耗高、携岩带砂难度大等难题。因此,本研究研制具有强抑制、强封堵、高润滑和流型好的高性能水基钻井液,首批现场应用2口井,结果表明:该钻井液对沙一段至沙三段泥岩井壁稳定周期较长;润滑性好,定向正常,起下钻摩阻低;流变参数稳定,携岩能力强,保证了井眼清洁及岩屑床的清除;缩短了钻完井周期,实现了老浆的回收再利用,降低了钻井成本,对推动老油田剩余产能挖潜具有重大意义。In order to tap into the remaining production capacity of the old oil field and reduce drilling costs,Zhongyuan Area had gradually deployed sidetracking horizontal wells.There was many problems,such as well-bore instability in high shale content;directional underpinning often occurred at short-radius horizontal well mode and large dogleg degrees,carry sand difficulty because of high annular pressure loss in slim hole.There-fore,high-performance water-based drlling fluids with strong inhibition,strong sealing,high lubrication and good flow patterns could help solve the above problems.The application of 2 wells showed that a long period of wellbore stability of the drilling fluid for the mudstone of Es1 to Es3 formation;good lubricity,normal orienta-tion and low tripping friction;stable rheological parameters and strong carrying capacity,which ensured the borehole cleaning and the removal of cuttings bed.The period of drilling and completion shortened,recycling realized,drilling costs reduced,which had great significance in promoting the potential tapping of remaining production capacity in old oil fields.

关 键 词：高性能水基钻井液 井壁稳定 开窗侧钻水平井 小井眼井 

分 类 号：TE254[石油与天然气工程—油气井工程]