深地塔科1井钻井液技术  

Drilling fluid technology for deep subsurface Tako-1 well

作　　者：孙金声 王建华 SUN Jinsheng;WANG Jianhua(CNPC Engineering Technology R&D Company Limited,Beijing 102206)

机构地区：[1]中国石油集团工程技术研究院有限公司,北京102206

出　　处：《钻井液与完井液》2025年第2期155-166,共12页Drilling Fluid & Completion Fluid

基　　金：国家重点研发计划“国家质量基础设施体系”重点专项,课题“复杂环境下钻井工作液检测技术集成与示范应用”(2023YFF0611104);国家自然科学基金基础科学中心项目“超深特深层油气钻采流动调控”(52288101);中国石油集团关键核心技术攻关项目“抗温240℃以上的环保井筒工作液新材料”(2020A-3913);中国石油重大科技专项“万米超深层钻探关键工程技术与装备研制”(2023ZZ20);中国石油集团工程技术研究院有限公司科学研究与技术开发课题(CPET 202316、CPET 202317)。

摘　　要：深地塔科1井是我国深地勘探领域的一项重大工程,其钻探过程中面临着超高温、超高压、超高盐等一系列极端工况,这些复杂条件给钻井液技术带来了巨大的挑战。钻井液作为钻井过程中的“血液”,其性能的优劣直接关系到钻井的成败。系统介绍了万米深层钻井液技术,在揭示钻井液关键处理剂耐超高温高盐机理及堵漏材料提高缝洞漏层承压能力机理的基础上,通过研制新材料、构建新体系、开发新软件,形成了抗温240℃抗盐水基钻井液、抗温240℃油基钻井液和恶性缝洞漏失堵漏3项关键核心技术,成功解决了钻井液高温性能恶化、井壁失稳、减摩降阻和恶性漏失等难题,在深地塔科1井四开、五开成功应用,为深地塔科1井顺利钻至10910 m完钻提供了关键技术支撑。The drilling process of deep-earth Tako-1 well is confronted with a series of extreme conditions such as ultra-high temperature,ultra-high pressure and ultra-high salt.These complex conditions bring great challenges to drilling fluid technology.As the"blood"in drilling process,the performance of drilling fluid is directly related to the success or failure of drilling.This paper systematically introduced the technology of 10,000 meters deep drilling fluid.On the basis of revealing the mechanism of ultra-high temperature and high salt resistance of the key treatment agent of drilling fluid and the mechanism of the plugging material improving the pressure bearing capacity of the fracture-cavity lose layer,through the development of new materials,the construction of new systems and the development of new software,It has formed three key core technologies,which are temperature resistant 240℃salt-water resistant drilling fluid,temperature resistant 240℃salt-oil based drilling fluid and malignant fracture-cavity leakage and plugging.It has successfully solved the problems such as the deterioration of drilling fluid's high temperature performance,wellbore instability,friction reduction,malignant leakage and formation pollution,and has been successfully applied in the deep-ground Tako-1 well.It provides key technical support for the successful drilling of the deep subsurface Tako-1 well to 10,910 meters.

关 键 词：万米深层 超高温 高盐 水基钻井液 油基钻井液 防漏 堵漏 

分 类 号：TE254.3[石油与天然气工程—油气井工程]