摘要
为满足苏里格气田钻井清洁化生产需求,研制了适合钻井液、钻屑不落地处理工艺的关键设备,形成了一整套钻井液不落地施工工艺及操作流程,有效避免了因钻井液泄露造成的环境污染;研发了一种天然大分子环保型钻井液,生物毒性EC50为17.4×105 mg/L,无毒,BOD5/COD≥0.05,易生物降解,其他各项指标也达到环保要求,从源头上保障钻井液环保性能达标;研发了废弃钻井液固液分离及回用技术,现场推广应用400口井,缓解了苏里格生态脆弱地区环保压力和淡水资源短缺的压力。
In order to satisfy the requirements of clean drilling in the Sulige Gasfield,the key equipment suitable for drilling fluid and no landing drilling cuttings treatment process are developed,and a complete set of construction process and operation flow for no landing of drilling fluid are established,so as to avoid the environmental pollution caused by the leakage of drilling fluid.In addition,a kind of natural macromolecular environmental drilling fluid is developed.It is non-toxic(biotoxicity EC5017.4×105 mg/L)and can be biologically degraded easily(BOD5/COD≥0.05)and its other indicators satisfy the requirements of environment protection.In this way,the qualified environmental performance of the drilling fluid can be guaranteed from the very beginning.What’s more,the solid-liquid separation and recycling technology for waste drilling fluid is developed.And it has been applied to 400 wells.And its application alleviates the environmental pressure of ecologically weak areas and the pressure of fresh water shortage in the Sulige Gas Field.
作者
段志锋
吴学升
董宏伟
黎金明
张建卿
DUAN Zhifeng;WU Xuesheng;DONG Hongwei;LI Jinming;ZHANG Jianqing(National Engineering Laboratory of Low-permeability Oil&Gas Exploration and Development,Xi’an,Shaanxi 710061,China;Oil and Gas Technology Institute,PetroChina Changqing Oilfield Company,Xi’an 710061,Shaanxi,China;Engineering Technology Research Institute,CNPC Chuanqing Drilling Engineering Company Limited,Xi’an,Shaanxi 710061,China;CCDC Changqing General Drilling Company,Xi’an 710061,Shaanxi,China)
出处
《石油钻采工艺》
CAS
北大核心
2019年第5期586-591,共6页
Oil Drilling & Production Technology
基金
中国石油集团(股份)公司重大科技专项“长庆油田5000万吨持续高效稳产关键技术研究与应用”(编号:2016E-05)
关键词
钻井
清洁化生产
钻屑不落地
环保钻井液
固液分离
废液回用
苏里格气田
well drilling
clean production
no landing drilling cutting
environmentally friendly drilling fluid
solid-liquid separation
waste fluid recycling
Sulige Gasfield
