摘要
准噶尔盆地西部隆起中拐凸起金龙2井区致密油藏采用水平井水力压裂缝网开采,受大规模加密井和储集层断裂带影响,井间压窜现象频发,极大地影响生产效率。通过调研和探讨多段压裂水平井井间压窜监测识别方法的适用性,结合金龙2井区现场压裂施工监测和生产资料,建立了一套综合考虑生产动态、压裂施工和微地震特征的井间压窜识别流程,并对研究区井间压窜进行识别和分析。结果表明:金龙2井区井间压窜现象严重,不仅存在同层位和同断块压窜,也存在跨层位和跨断块压窜;金龙2井区水平井井距较小和储集层断层发育,会诱发井间压窜,应避免在大规模断裂区域加密布井,也应适当减小加密井压裂规模。
The tight oil reservoir in the Jinlong 2 well block in the Zhongguai bulge,western uplift of the Junggar Basin,is developed by hor⁃izontal well hydraulic fracturing.Frequent inter⁃well frac⁃hit caused by the large⁃scale well infilling and the presence of fault zones in the reservoir impedes production efficiency greatly.By investigating the applicability of monitoring and identification methods for inter⁃well frac⁃hit in multi⁃stage fractured horizontal wells,and combining field fracturing monitoring and production data from the Jinlong 2 well block,a comprehensive identification workflow for inter⁃well frac⁃hit was established.This workflow which integrates production perfor⁃mance,fracturing operation,and microseismic characteristics was used to identify and analyze inter⁃well frac⁃hit in the study area.The re⁃sults show that severe inter⁃well frac⁃hit exists in the Jinlong 2 well block,not only within but also across individual horizons and fault blocks.The relatively small horizontal well spacing and developed fault system in the reservoir in the Jinlong 2 well block may induce inter⁃well frac⁃hit.It is recommended to avoid well infilling in large⁃scale fault zones and reduce fracturing scale for infill wells.
作者
黄后传
曹晓璐
李宁
加玉锋
吴国龙
巨世昌
HUANG Houchuan;CAO Xiaolu;LI Ning;JIA Yufeng;WU Guolong;JU Shichang(Heavy Oil Development Company,Xinjiang Oilfield Company,PetroChina,Karamay,Xinjiang 834000,China;School of Energy Resources,China University of Geosciences(Beijing),Beijing 100083,China)
出处
《新疆石油地质》
北大核心
2025年第2期201-207,共7页
Xinjiang Petroleum Geology
基金
中国石油科技重大专项(2017E-0405)。
关键词
准噶尔盆地
西部隆起
中拐凸起
上乌尔禾组
致密油藏
水平井
水力压裂
井间压窜
Junggar Basin
western uplift
Zhongguai bulge
upper Urhe formation
tight oil reservoir
horizontal well
hydraulic fracturing
inter⁃well frac⁃hit
