Water Base Drilling Fluid Technology for Ultra-Long Horizontal Drilling in a Tight Gas Well in Changqing Oilfield
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摘要: 2020年长庆气田在致密气井区先后完成了3口超长水平段水平井,水平段长度分别为3321、4118和4466 m,均使用水基钻井液完成施工,不断刷新亚洲陆上最长水平段记录。超长水平段给降摩减阻、钻屑清洁、泥岩防塌等工作带来极大难度,针对这些难点并结合地层岩石结构特点进行了针对性的技术攻关,形成了超长水平段井眼净化、井眼稳定等技术和CQSP-RH水基钻井液体系,现场应用效果良好,水平段井壁保持稳定,完钻钻具下放摩阻控制在500 kN左右、套管摩阻控制在350 kN以内,顺利完井。随着长庆油气田开发力度的加大,为了动用水源保护区、林区并提高单井产量,长水平段井的开发成为必然,这些井的顺利完成,为油气田的后续开发带来了极大的示范作用Abstract: Changqing Oilfield has in the year 2020 drilled three wells with ultra-long horizontal sections in its tight gas well block, the lengths of the horizontal sections are 3321 m, 4118 m and 4466 m, respectively. These long horizontal sections were all drilled with water base muds, and each of the horizontal lengths has consecutively set a new record of the longest horizontal section of onshore wells in Asia. Long horizontal section drilling was faced with challenges such as friction reduction, hole cleaning and borehole wall stabilization. Specific studies were conducted to deal with these difficulties based on the structures of the formation rocks. As a result, a CQSP-RH drilling fluid and technologies for hole cleaning and wellbore stabilization in ultra-long horizontal well drilling were presented. Field application of the technologies and the CQSP-RH drilling fluid has produced good results, the horizontal section of the well was stable during drilling. When running the drill string into the hole, the friction of the drill string encountered was controlled at 500 kN in the open hole, and 350 kN in the cased hole. The well was successfully completed. With more and more development activity in Changqing oilfield going on, long horizontal well drilling technology has to be adopted to develop the water resource conservation and the forest regions and to increase the production of a single well. The successful drilling of these wells has provided a model and an arsenal of technologies for the subsequent development of the oil and gas field.
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[1] 孙龙德, 邹才能, 贾爱林, 等. 中国致密油气发展特征与方向[J]. 石油勘探与开发, 2019, 46(6):1015-1026.SUN Longde, ZOU Cai, JIA Ailin, et al. Characteristics and direction of tight oil and gas development in China[J]. Petroleum Exploration and Development, 2019, 46(6):1015-1026. [2] 姚泾利, 刘晓鹏, 赵会涛, 等. 鄂尔多斯盆地盒8段致密砂岩气藏储层特征及地质工程一体化对策[J]. 中国石油勘探, 2019, 24(2):186-195.YAO Jingli, LIU Xiaopeng, ZHAO Huitao, et al. Reservoir characteristics of tight sandstone gas reservoir in He8 member of Ordos basin and countermeasures for geological engineering integration[J]. China petroleum exploration, 2019, 24(2):186-195. [3] 冀光, 贾爱林, 孟德伟, 等. 大型致密砂岩气田有效开发与提高采收率技术对策[J]. 石油勘探与开发, 2019, 46(3):602-612.JI Guang, JIA Ailin, MENG Dewei, et al. Technical countermeasures for effective development and enhanced oil recovery of large tight sandstone gas fields[J]. Petroleum Exploration and Development, 2019, 46(3):602-612. [4] 胡祖彪, 张建卿, 王清臣, 等. 长庆油田华H50-7井超长水平段钻井液技术[J]. 石油钻探技术, 2020, 48(4):28-36.HU zubiao, ZHANG Jianqing, WANG Qingchen, et al. Drilling fluid technology for ultra long horizontal section of HuaH50-7 well in Changqing oilfield[J].Petroleum Drilling Technology, 2020, 48(4):28-36. [5] 王波, 孙金声, 申峰, 等. 陆相页岩气水平井段井壁失稳机理及税基钻井液对策[J]. 天然气工业, 2020, 40(4):104-111.WANG Bo, SUN Jinsheng, SHEN Feng, et al. Wellbore instability mechanism and tax based drilling fluid countermeasures for continental shale gas horizontal section[J]. Natural Gas Industry, 2020, 40(4):104-111. [6] 王长宁, 崔贵涛, 李宝军, 等. 厄瓜多尔TARAPOA区块水平井钻井液关键技术[J]. 钻采工艺, 2017, 40(6):87-89.WANG Changning, CUI Guitao, LI Baojun, et al. Key technology of drilling fluid for horizontal well in tarapaoa block, Ecuador[J]. Drilling & Production Technology, 2017, 40(6):87-89. [7] 肖金裕, 杨兰平, 李茂森, 等. 有机盐聚合醇钻井液在页岩气井中的应用[J]. 钻井液与完井液, 2011, 28(6):21-23.XIAO Jinyu, YANG Lanping, LI Maosen, et al. Application of organic salt polyol drilling fluid in shale gas wells[J]. Drilling Fluid & Completion Fluid, 2011, 28(6):21-23. [8] 汪露, 王鹏, 王伟志, 等. 对塔河油田井眼净化和井壁稳定的几点认识[J]. 钻采工艺, 2018, 41(5):116-119.WANG Lou, WANG Peng, WANG Weizhi, et al. Some knowledge on wellbore purification and wellbore stability in Tahe oilfield[J]. Drilling & Production Technology, 2018, 41(5):116-119. [9] 李明, 汪志明, 郝炳英, 等. 钻柱旋转对大位移井井眼净化影响规律的研究[J]. 石油机械, 2009, 37(12):34-37.LI Ming, WANG Zhiming, HAO Bingying, et al. Study on the effect of drillstring rotation on wellbore purification in extended reach wells[J]. China Petroleum Machinery, 2009, 37(12):34-37. [10] 汪志明, 郭晓乐, 张松杰, 等. 南海流花超大位移井井眼净化技术[J]. 石油钻采工艺, 2006, 28(1):4-8.WANG Zhiming, GUO Xiaole, ZHANG Songjie, et al. Borehole cleaning technology for mega-extended-reach wells at Liuhua field in south China sea[J]. Oil Drilling & Production Technology, 2006, 28(1):4-8. [11] 罗显尧. 孤岛地区水平井摩阻分析与减摩技术研究[D]. 北京:中国石油大学(北京), 2010:34-36. LUO Xianyao. Friction analysis and friction reduction technology of horizontal wells in Gudao area[D]. Beijing:China University of Petroleum(Beijing), 2010:34-36. [12] 魏昱, 白龙, 王骁男. 川深1井钻井液关键技术[J]. 钻井液与完井液, 2019, 36(2):194-201.WEI Yu, BAI Long, WANG Xiaonan. Key technologies of drilling fluid in Chuanshen1 well[J]. Drilling Fluid & Completion Fluid, 2019, 36(2):194-201. [13] 刘清友, 敬俊, 祝效华. 长水平段水平井钻进摩阻控制[J]. 石油钻采工艺, 2016, 38(1):18-22.LIU Qingyou, JING Jun, ZHU Xiaohua. Control of friction resistance in drilling of horizontal well with long horizontal section[J]. Oil Drilling & Production Technology, 2016, 38(1):18-22. [14] 汪露, 王伟志, 杨中强. 塔河油田钻井液固相控制技术[J]. 钻采工艺, 2015, 38(6):102-104.WANG Lou, WANG Weizhi, YANG Zhongqiang. Solid phase control technology of drilling fluid in Tahe oilfield[J]. Drilling & Production Technology, 2015, 38(6):102-104. [15] 路宗羽, 赵飞, 雷鸣, 等. 新疆玛湖油田砂砾岩致密油水平井钻井关键技术[J]. 石油钻探技术, 2019, 47(2):9-14.LU Zongyu, ZHAO Fei, LEI Ming, et al. Key technologies for drilling horizontal wells in glutenite tight oil reservoirs in the Mahu oilfield of Xinjiang[J]. Petroleum Drilling Techniques, 2019, 47(2):9-14. [16] 刘永贵. 大庆致密油藏水平井高性能水基钻井液优化与应用[J]. 石油钻探技术, 2018, 46(5):35-39.LIU Yonggui. Optimization and application of high performance water-based drilling fluid for horizontal wells in Daqing tight oil reservoir[J]. Petroleum Drilling Techniques, 2018, 46(5):35-39. [17] 孔勇, 杨小华, 徐江, 等. 抗高温强封堵防塌钻井液体系研究与应用[J]. 钻井液与完井液, 2016, 33(6):17-22.KONG Yong, YANG Xiaohua, XU Jiang, et al. Study and application of a high temperature drilling fluid with strong plugging capacity[J]. Drilling Fluid & Completion Fluid, 2016, 33(6):17-22. [18] 林永学, 王显光, 李荣府. 页岩气水平井低油水比油基钻井液研制及应用[J]. 石油钻探技术, 2016, 44(2):28-33.LIN Yongxue, WANG Xianguang, LI Rongfu. Development of oil-based drilling fluid with low oil-water ratio and its application to drilling horizontal shale gas wells[J]. Petroleum Drilling Techniques, 2016, 44(2):28-33. [19] 林四元, 张杰, 韩成, 等. 东方气田浅部储层大位移水平井钻井关键技术[J]. 石油钻探技术, 2019, 47(5):17-21.LIN Siyuan, ZHANG Jie, HAN Cheng, et al. Key technology for horizontal well of extended reach drilling in the shallow reservoirs of the Dongfang gas field[J]. Petroleum Drilling Techniques, 2019, 47(5):17-21. [20] 王建龙, 齐昌利, 柳鹤, 等. 沧东凹陷致密油气藏水平井钻井关键技术[J]. 石油钻探技术, 2019, 47(5):11-16.WANG Jianlong, QI Changli, LIU He, et al. Key technologies for drilling horizontal wells in tight oil and gas reservoirs in the Cangdong sag[J]. Petroleum Drilling Techniques, 2019, 47(5):11-16.
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