塔里木油田防漏堵漏技术进展与发展建议

针对塔里木油田复杂地质条件下的井漏问题,结合地层特征分析了该油田的井漏类型,总结了该油田防漏堵漏技术发展历程及取得的技术成果.分析可知,塔里木油田漏失类型包括孔隙性漏失、裂缝性漏失和溶洞型漏失,但以裂缝性和缝洞型漏失为主.该油田的防漏堵漏技术发展经历了基础体系建立阶段和特色技术发展完善阶段,形成了油基钻井液防漏堵漏、高...

The Technical Advance and Development Suggestions for Leakage Prevention and Plugging Technologies in the Tarim Oilfield

With the goal of solving the problem of circulation lost under complicated geological conditions of the Tarim Oilfield, this paper analyzed the types of circulation lost in this oilfield combining its formation characteristics, and summarized the development history and achievements of leakage prevention and plugging technologies in this field. It shows that leakages induced by porosity, fracture and caverns are all encountered in Tarim Oilfield, but mainly caused by fractures and cavity. The development of leakage prevention and plugging technologies in this oilfield has undergone two stages: the establishment of basic system and the development and perfection of characteristic technology. A series of techniques have been formed such as oil-based drilling fluid leakage prevention and plugging, high-strength pressure-bearing plugging, high-pressure brine layer leakage prevention and plugging, and fracture-cavity leakage plugging. From the analysis and sorting, we have clarified the current status of leakage prevention and plugging techniques in Tarim Oilfield and the remaining challenges in leakage control, and determined the trend of research. We proposed suggestions for further development of those technologies, such as strengthening formation prediction, developing or introducing new plugging technologies, enriching engineering techniques, and developing big data plugging software.