小井眼连续油管多簇射孔填砂分段压裂技术——以百口泉油田百1断块X井为例  

Multi-cluster perforating and sand-filling staged fracturing technology for slim hole coiled tubing——taking Bai 1 fault block X well in Baikouquan oilfield as an example

作　　者：叶志权 肖雷 王丽峰 薛浩楠 王晗 YE Zhiquan;XIAO Lei;WANG Lifeng;XUE Haonan;WANG Han(Downhole Service Company,CNPC Western Drilling Engineering Company Limited,Karamay,Xinjiang 834000,China;Shale Oil Stimulation Sub-Lab,Key Laboratory of Reservoir Stimulation,CNPC,Karamay,Xinjiang 834000,China)

机构地区：[1]中国石油西部钻探井下作业公司,新疆克拉玛依834000 [2]中国石油油气藏改造重点实验室页岩油储层改造分研究室,新疆克拉玛依834000

出　　处：《油气井测试》2023年第1期33-37,共5页Well Testing

摘　　要：百口泉油田属于低渗透油藏,自然产能差,经过长期开采,能量已枯竭,储层改造可以使其得到效益开发,但目前侧钻小井眼体积压裂技术不成熟,需要开展技术攻关。通过研究分析前期侧钻水平井分段压裂工艺的适应性和不足,形成了侧钻小井眼压裂理论认识,提出一套小井眼连续油管多簇射孔填砂体积压裂分段压裂工艺。该工艺首选采用连续油管多簇喷砂射孔,然后在全通径套管内体积压裂技术改造,最后尾追高浓度砂塞在井筒内填砂分段,循环上述步骤从而逐级实现砂塞封隔、连续油管射孔、套管体积压裂一体化作业。通过在百口泉油田百1断块X井开展?101.6 mm套管侧钻小井眼水平井体积压裂实验,验证了该工艺实施的可行性,该井投产后,日产油10.23 t,超过同区块其它邻井,压裂效果显著。该工艺技术成功解决了小井眼套管体积压裂难题,实现了该区地层有效动用开发,为后续开展“侧压一体化”效益开发提供新思路。Baikouquan oilfield is a low permeability reservoir with poor natural productivity.After long-term exploitation,the energy has been exhausted,and the reservoir reconstruction can make it benefit development.However,at present,the sidetracking slim hole volume fracturing technology is not mature,and technical research is needed.Through the research and analysis of the adaptability and shortcomings of staged fracturing technology for sidetracking horizontal wells in the early stage,the theoretical understanding of sidetracking slim hole fracturing was formed,and a set of staged fracturing technology for slim hole coiled tubing multiple cluster perforation and sand filling was proposed.This process is preferred to adopt coiled tubing multi-cluster sandblasting and perforating,and then carry out volume fracturing technical transformation in the full-bore casing.Finally,the high-concentration sand plug is followed up and filled in the wellbore by sand sections.The above steps are circulated to realize the integrated operation of sand plug plugging,coiled tubing perforating,and casing volume fracturing step by step.The feasibility of the implementation of this technology has been verified through the volume fracturing experiment of the slim hole horizontal well with 101.6 mm casing sidetracking in Well X of Bai1 Block in Baikouquan Oilfield.After the well is put into production,the daily oil production of this well is 10.23 tons,which is more than other temporary wells in the same block,and the fracturing effect is remarkable.This technology has successfully solved the problem of casing volume fracturing in slim hole,realized the effective production and development of the formation in this area,and provided a new idea for the follow-up development of“integration of lateral pressure”benefits.

关 键 词：水力喷射 多簇射孔 井筒填砂 分段压裂 体积压裂 侧钻水平井 小井眼井 现场应用 

分 类 号：TE353[石油与天然气工程—油气田开发工程]