SXJD-Ⅰ型低伤害暂堵修井液技术
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摘要
为满足老油田修井需求、并兼顾储层保护,以KCl溶液为基液,通过优化屏蔽暂堵主剂、胶体保护剂及屏蔽暂堵辅剂加量,形成了SXJD-Ⅰ型低伤害暂堵修井液。室内评价表明:该修井液具有良好的滤失性和堵漏性能,暂堵颗粒可迅速被油井产出液中的油和水分解,缩短修井后的排水周期;岩心渗透率恢复率大于88.0%,较常规修井液渗透率恢复率大幅提高。SXJD-Ⅰ型低伤害暂堵修井液在胜利油田GU249井和哈萨克斯坦KKM油田301井、190井等3口井进行了现场应用,其封堵效果良好,能够满足修井作业需要,排水复产期缩短40.0%以上。研究表明,SXJD-Ⅰ型低伤害暂堵修井液的封堵和储层保护效果良好,具有推广应用价值。
In order to satisfy the requirements of both workover and reservoir protection in mature oilfields, the SXJD-Ⅰ type low damage temporary plugging workover fluid was developed by taking the KCl solution as the base fluid, and optimizing the shielding temporary plugging main agent, colloidal protective agent and temporary plugging assisting agent. The inside evaluation showed that the workover fluid had good filtration and plugging performance, the temporary plugging particles could be quickly dissolved by oil and water in the produced fluids, which significantly reduced the water drainage period after workover. With a core permeability recovery rate greater than 88.0%, it exhibited a significantly enhanced permeability recovery rate, which was better than the conventional workover fluids.SXJD-Ⅰ type low damage temporary plugging workover fluid has been tested in three wells: Well GU249 in Shengli Oilfield,Well 301 and Well 190 in KKM Oilfield, Kazakhstan, where they achieved a good sealing effect. The new fluid can meet the needs of workover operation, and the water drainage period can be shortened by 40.0% or more. The research indicated that SXJD-Ⅰ type low damage temporary plugging workover fluid had good sealing and reservoir protection effect, with sound popularization and application prospects.
In order to satisfy the requirements of both workover and reservoir protection in mature oilfields, the SXJD-Ⅰ type low damage temporary plugging workover fluid was developed by taking the KCl solution as the base fluid, and optimizing the shielding temporary plugging main agent, colloidal protective agent and temporary plugging assisting agent. The inside evaluation showed that the workover fluid had good filtration and plugging performance, the temporary plugging particles could be quickly dissolved by oil and water in the produced fluids, which significantly reduced the water drainage period after workover. With a core permeability recovery rate greater than 88.0%, it exhibited a significantly enhanced permeability recovery rate, which was better than the conventional workover fluids.SXJD-Ⅰ type low damage temporary plugging workover fluid has been tested in three wells: Well GU249 in Shengli Oilfield,Well 301 and Well 190 in KKM Oilfield, Kazakhstan, where they achieved a good sealing effect. The new fluid can meet the needs of workover operation, and the water drainage period can be shortened by 40.0% or more. The research indicated that SXJD-Ⅰ type low damage temporary plugging workover fluid had good sealing and reservoir protection effect, with sound popularization and application prospects.
引文
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[14]赵春鹏,李文华,张益,等.低渗气藏水锁伤害机理与防治措施分析[J].断块油气田,2004,11(3):45-46.ZHAO Chunpeng,LI Wenhua,ZHANG Yi,et al.Damage mechanism and prevention methods analysis of low permeability gas reservoir water blocking[J].Fault-Block Oil&Gas Field,2004,11(3):45-46.
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[16]董军.新型无固相防硫化氢低伤害修井液技术[J].钻井液与完井液,2015,32(2):23-25.DONG Jun.New solids-free,hydrogen sulfide-proof,low damage workover fluid technology[J].Drilling Fluid&Completion Fluid,2015,32(2):23-25.
[2]颜明,田艺,贾辉,等.保护储层的络合水修井液技术研究[J].石油天然气学报,2013,35(11):112-115.YAN Ming,TIAN Yi,JIA Hui,et al.Technical research of complex water workover fluid for reservoir protection[J].Journal of Oil and Gas Technology,2013,35(11):112-115.
[3]何丕祥,胡成亮,熊英,等.多重油层保护修井液研制与应用[J].非常规油气,2018,5(4):65-69.HE Pixiang,HU Chengliang,XIONG Ying,et al.Development and application of multiple reservoir protection fluid[J].Unconventional Oil&Gas,2018,5(4):65-69.
[4]张峰志,奇生芝,安崇清.常规修井作业中保护储层技术[J].中国石油和化工标准与质量,2013,33(9):150.ZHANG Fengzhi,QI Shengzhi,AN Chongqing.Protection of reservoir technology in conventional workover operations[J].Petro China Chemical Industry Standards and Quality,2013,33(9):150.
[5]刘平德,刘承华,廖仕孟,等.新型无固相压井液的研制及性能评价[J].天然气工业,2005,25(4):83-85.LIU Pingde,LIU Chenghua,LIAO Shimeng,et al.Development of novel solid-free well control fluid and its behavior evaluation[J].Natural Gas Industry,2005,25(4):83-85.
[6]肖建洪,于滨,王代流,等.新型聚合物盐水体系低污染修井液[J].油气田地面工程,2001,20(4):30-31.XIAO Jianhong,YU Bin,WANG Dailiu,et al.A new workover fluid with slight pollution polymer brine water system[J].OilGasfield Surface Engineering,2001,20(4):30-31.
[7]马喜平,许帅,王晓磊,等.低压气藏用低密度无固相泡沫修井液的研制及试验[J].石油钻探技术,2015,43(5):100-105.MA Xiping,XU Shuai,WANG Xiaolei,et al.Development and experiment of low-density and solid-free foam workover fluid for low pressure gas reservoir[J].Petroleum Drilling Techniques,2015,43(5):100-105.
[8]鄢捷年,马学勤,刘继生,等.强抑制性水基修井液的优化设计与应用[J].钻井液与完井液,2002,19(5):13-15.YAN Jienian,MA Xueqin,LIU Jisheng,et al.Optimized design and application of strongly inhibitive water based workover fluid[J].Drilling Fluid&Completion Fluid,2002,19(5):13-15.
[9]宫新军,陈建华,成效华.超低压易漏地层钻井液新技术[J].石油钻探技术,1996,24(4):26,62.GONG Xinjun,CHEN Jianhua,CHENG Xiaohua.New drilling fluid techniques for ultra low pressure and lost circulation formation[J].Petroleum Drilling Techniques,1996,24(4):26,62.
[10]骆贵明,李淑白,张国良.保护储层的无固相压井液[J].钻井液与完井液,2002,19(4):15-17.LUO Guiming,LI Shubai,ZHANG Guoliang.Solids free well control fluid for formation protection[J].Drilling Fluid&Completion Fluid,2002,19(4):15-17.
[11]董军,樊松林,郭元庆,等.新型低密度微泡沫防漏修井液技术[J].钻井液与完井液,2013,30(1):22-25.DONG Jun,FAN Songlin,GUO Yuanqing,et al.Research on technology of novel low-density micro-foam workover fluid[J].Drilling Fluid&Completion Fluid,2013,30(1):22-25.
[12]LIANG Y,WANG D,CHEN H.Preparation of high oil absorption resins by suspended emulsion polymerization and their properties[J].Separation Science and Technology,2013,48(13):1977-1981.
[13]于雷,张敬辉,李公让,等.低活度强抑制封堵钻井液研究与应用[J].石油钻探技术,2018,46(1):44-48.YU Lei,ZHANG Jinghui,LI Gongrang,et al.Research and application of plugging drilling fluid with low-activity and high Inhibition properties[J].Petroleum Drilling Techniques,2018,46(1):44-48.
[14]赵春鹏,李文华,张益,等.低渗气藏水锁伤害机理与防治措施分析[J].断块油气田,2004,11(3):45-46.ZHAO Chunpeng,LI Wenhua,ZHANG Yi,et al.Damage mechanism and prevention methods analysis of low permeability gas reservoir water blocking[J].Fault-Block Oil&Gas Field,2004,11(3):45-46.
[15]陈大钧.油气田应用化学[M].北京:石油工业出版社,2006:13.CHEN Dajun.Chemistry applied on oil and gas fields[M].Beijing:Petroleum Industry Press,2006:13.
[16]董军.新型无固相防硫化氢低伤害修井液技术[J].钻井液与完井液,2015,32(2):23-25.DONG Jun.New solids-free,hydrogen sulfide-proof,low damage workover fluid technology[J].Drilling Fluid&Completion Fluid,2015,32(2):23-25.