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水平井已成为高效开发油气的重要技术手段,大庆油田在上世纪90年代就开始了对水平井压裂技术的攻关研究,从笼统压裂到分段压裂再到多段、大规模体积压裂,压裂理念不断进步、工艺水平不断提高。近年来,围绕低渗透难采储量以及非常规致密储层的经济有效动用,逐步发展形成了双封单卡分段压裂、复合桥塞多簇射孔分段压裂、连续油管水力喷射环空加砂压裂技术。本文阐述了大庆油田水平井压裂技术发展现状,着重介绍了目前应用的三项水平井主体压裂技术,并对今后大庆油田水平井压裂技术发展方向进行了展望。
Horizontal wells have become an important technical means to develop oil and gas efficiently. Daqing Oilfield began its research on horizontal well fracturing technology in the 1990s, ranging from general fracturing to multi-stage fracturing to multi-stage large-scale volume fracturing , Fracturing concept of continuous improvement, continuously improve the level of technology. In recent years, around the low-permeability recoverable reserves and the economical and effective utilization of unconventional and tight reservoirs, a series of double-seal single-card fracturing, multi-cluster perforating multi-cluster perforating fracturing, coiled tubing hydraulic jetting ring Empty Sand Fracturing Technology. This paper describes the status quo of horizontal well fracturing technology in Daqing Oilfield, emphasizes the application of the three main horizontal fracturing technologies currently applied, and looks forward to the future development of horizontal well fracturing technology in Daqing Oilfield.