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低损害无固相复合聚合物修井液体系研制及性能评价
引用本文:舒勇,熊春明,张建军.低损害无固相复合聚合物修井液体系研制及性能评价[J].油田化学,2011,28(3).
作者姓名:舒勇  熊春明  张建军
作者单位:中国石油勘探开发研究院,北京,100083
基金项目:中国博士后科学基金项目“NP油田东营组油藏高效开发注采关键技术改进”(项目编号20100480345)
摘    要:在修井过程中,低压低渗裂缝较发育储层易发生修井液漏失,造成水敏、液锁等损害。为使该损害降至最低,采用动态挂片失重法、页岩抑制防膨法及表/界面张力和流变参数测定方法,优选出了适合储层特点的缓蚀剂、黏土防膨剂、表面活性助排剂及增黏降滤失剂等修井液组分,得到最佳修井液XJPS配方:模拟地层水+1%GH1+0.3%HTB+2%DG-FPJ+0.3%XC+2%JMPS-1+1%PRDS+2%NaCOOH+0.3%NaOH。室内实验结果表明,该修井液具有流变参数适宜、低滤失(〈8 mL)、渗透率保留率高(〉85%)、返排效果好等特点,可以实现修井液在无固相、不形成致密泥饼下的低滤失性能。矿场应用效果表明,与原用修井液相比,试验井应用XJPS修井液作业后,日产气量、日产油量降幅和含水量增幅均较小,明显减轻了因修井液漏失储层造成的液锁损害和产能损失,提高了储层保护效果和修井效率。图2表7参8

关 键 词:低渗低压气藏  液锁  无固相多功能修井液  储层保护  丘东油田

Research and Laboratory Evaluation on a Novel Low-Damage and Solid-Free Combinational Polymer Workover Fluid
SHU Yong,XIONG Chun-Ming,ZHANG Jian-Jun.Research and Laboratory Evaluation on a Novel Low-Damage and Solid-Free Combinational Polymer Workover Fluid[J].Oilfield Chemistry,2011,28(3).
Authors:SHU Yong  XIONG Chun-Ming  ZHANG Jian-Jun
Affiliation:SHU Yong,XIONG Chun-Ming,ZHANG Jian-Jun(Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,P R of China
Abstract:Fluid-blocking and water sensibility were easily induced by workover fluid loss during the processes of workover operations in the low-permeability gas condensate reservoir formation with low formation pressure of natural micro fractures.In order to minimize the damage,the main additives suited to target formation were selected by rotating hanging plate and dynamic weight loss method,and so on.The best formula of the XJPS workover fluid was: 0.3% XC,2% JMPS-1,1% PRDS and supplementary additives.The results ...
Keywords:low-permeability and low pressure gas condensate reservoir  fluid blockage  multifunctional and solid-free workover fluid  formation damage control  Qiudong oil fields  
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