通过全面梳理中国石油天然气股份有限公司（以下简称“中国石油”）修井作业技术发展现状,阐述了修井作业在新时代背景下的内涵,明确了中国石油修井作业技术在修井装备、修井工具、修井技术、信息与标准化建设4个方面的新进展。指出中国石油与国外修井作业技术的差距主要表现在修井装备（工具）的自动化、智能化水平不高;“三高（高温、高压、高含硫）”气井带压作业、长水平段找堵水、超深井连续管作业配套工艺技术与国外有差距;修井作业信息化、标准化和大数据应用有待开展等。在此基础上,结合中国石油修井作业技术发展现状及未来面临的技术难点,提出了8个方面的发展建议：①加强储集层特征认识,提高修井方案针对性;②系统攻关大修技术,解决疑难井治理难题;③加大水平井作业攻关,研发长井段水平井作业配套技术;④完善带压作业技术,拓展带压作业空间;⑤扩充连续管作业能力,提升特种作业水平;⑥发展自动化修井技术,迈向人工智能领域;⑦全面推广清洁作业,建设绿水青山油气田;⑧完善信息化建设,实现修井作业资源共享。图4表1参20
Through a comprehensive review of the development status of workover technology of PetroChina Company Limited (PetroChina), this paper presents the connotation of workover operation under the background of the new era, the latest progress of workover operation in the respects of equipment, tools, technology and the construction of information and standardization. The gaps between PetroChina and foreign counterpart in workover technology are as follows: the level of automation and intellectualization of tools and equipment is relatively low, the snubbing operation in gas wells characterized by HT/HP and high H2S is lagged behind; water plugging in the long horizontal wellbore needs to be further developed, coiled tubing and its relevant equipment for ultra-deep well operation has to be optimized; informationization, standardization and big data application of workover operation need to be started. Based on this as well as the development status of workover technology in China and the technical difficulties faced in the future, eight suggestions for future development are put forward: (1) strengthen the dynamic understanding of reservoir and improve the pertinence of workover schemes; (2) develop the general overhaul technology in a systematical way to tackle issues of seriously problematic wells; (3) put more efforts into the research of horizontal well workover operation and develop relevant technology for long horizontal section operation; (4) improve the snubbing technology and extend its applications; (5) expand the capacity of coiled tubing operation and improve the level of special operations; (6) develop automatic workover technology into the field of artificial intelligence; (7) promote clean operation in an all-round way and build green oil and gas fields; (8) perfect the informationization construction to realize the sharing of workover resources.
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