CAJ | 학술논문

以青海尕斯库勒油田E13油藏二次开发为背景，针对油藏开发后期开发矛盾凸显和剩余油高度分散的问题，开展高温高盐油藏深部调驱技术研究与矿场试验，在油藏精细化研究基础上，优选试验层位，以“15注30采”部署调驱井网，结合水流优势通道研究，建立“堵、调”相结合的深部调驱工艺技术路线。通过丙型水驱特征曲线预测，实施调驱后试验区提高采收率2．1％，取得了较好的调驱效果，在试验过程中加强调驱机理认识和注入参数调整，通过调驱前后吸水剖面、产液剖面对比分析，试验区调后层间、层内矛盾得到改善，主力层驱油效率提高、次、非主力层得到动用，表明深部调驱是一项既有提高油藏驱油效率又能提高水驱储量动用程度的提高采收率技术，具有一定的推广应用前景，对处于开发后期的同类型油藏深部调驱技术运用具有较好的借鉴意义。
이청해소사고륵유전E13유장이차개발위배경，침대유장개발후기개발모순철현화잉여유고도분산적문제，개전고온고염유장심부조구기술연구여광장시험，재유장정세화연구기출상，우선시험층위，이“15주30채”부서조구정망，결합수류우세통도연구，건립“도、조”상결합적심부조구공예기술로선。통과병형수구특정곡선예측，실시조구후시험구제고채수솔2．1％，취득료교호적조구효과，재시험과정중가강조구궤리인식화주입삼수조정，통과조구전후흡수부면、산액부면대비분석，시험구조후층간、층내모순득도개선，주력층구유효솔제고、차、비주력층득도동용，표명심부조구시일항기유제고유장구유효솔우능제고수구저량동용정도적제고채수솔기술，구유일정적추엄응용전경，대처우개발후기적동류형유장심부조구기술운용구유교호적차감의의。
In viewing the serious injection-production contradictions and highly-dispersed residual oil distribution in the late stage of development of E13 reservoir in Kuergasi oilfield in Qinhai Province, we performed deep profile correction technology laboratory study and pilot test in the high-temperature and high-salinity reservoirs.Based on detailed analyses of the reservoirs,a well pattern with 15 injectors and 30 producers were selected for the pilot test.A technological process with water-plugging and profile correction integrated is established based on identification of preferential water pathways. Flooding characteristic curve shows an incremental recovery factor of 2.1% was achieved during the pilot.During the process,mechanisms of profile correction were further explored and various combinations of injection parameters were tried.Comparing the water-intake profiles and producing profiles before and after the pilot shows that the post-develop-ment syndrome was greatly improved by successfully tapping the producing potential of both major and minor oil produ-cing layers.The study indicates that the procedure works effectively in increasing flooding sweep efficiency and the ratio of total producing interval thickness to total perforated interval thickness of producers.For brown reservoirs who have suf-fered from the similar problem to the one concerned, the procedure may be applied to solve certain technological prob-lems.