超稠油非均质油藏直井-水平井SAGD精细化调控研究  

Fine Control of Vertical-Horizontal SAGDD in Super-Heavy Oil Heterogeneous Reservoir

作　　者：陶亮 李凌铎[3] 袁玉晓 杨树波 任柯全[3] Tao Liang;Li Lingduo;Yuan Yuxiao;Yang Shubo;Ren Kequan(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation （ Southwest Petroleum University ） , Chengdu, Sichuan 610500, China;Southwest Petroleum University, Chengdu , Sichuan 610500, China;PetroChina Xinjiang Oilfield Company, Karamay , Xinjiang 834000, China;PetroChina Huabei Oilfield Company, Renqiu, Hebei 062552, China)

机构地区：[1]油气藏地质及开发工程国家重点实验室,四川成都610500 [2]西南石油大学,四川成都610500 [3]中国石油新疆油田分公司,新疆克拉玛依834000 [4]中国石油华北油田分公司,河北任丘062552

出　　处：《特种油气藏》2018年第2期80-84,共5页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"薄层稠油和超稠油开发技术"(2011ZX05012-004);中国石油"新疆大庆"科技重大专项"浅层稠油和超稠油开发技术研究与应用"(2012E-34-05)

摘　　要：针对风城油田重32井区齐古组超稠油油藏吞吐后期开发效果变差,转直井-水平井SAGD阶段精细调控不合理等问题,建立了先导试验区非均质油藏数值模型,对转SAGD后注采参数进行了优化。模拟结果表明,直井-水平井SAGD合理开发技术参数为:注汽速度为50 t/d,井底蒸汽干度大于0.7,采注比为1.2,注汽方式为直井复合汽驱。将生产井分为见效井、见反应井、不见效井、汽窜井,对应治理措施为正常生产、调参提液、吞吐引效、控制关井。试验区转SAGD分类治理后,日产油量由69 t/d升至128 t/d,阶段油汽比由0.11升至0.21,大幅提高了开发效果。研究成果可有效指导超稠油非均质油藏开发现场精细化调控,对同类油藏直井-水平井SAGD开发具有重要的借鉴意义。In order to improve the poor steam huff-puff performance for the late stage of super-heavy oil reservoir in Wellblock Zhong32 Qigu Formation of Fengcheng Oilfield and the unsatisfied fine control after vertical-horizontal SAGD, a numerical model of heterogeneous reservoir for the pilot area is established to optimize the injection-pro- duction parameters after implementing SAGD. Numerical simulation result indicates that the reasonable parameters for vertical-horizontal SAGD include steam injection rate of 50 t/d, bottom-hole steam dryness greater than 0. 7, production-injection ratio of 1.2 and composite steam flooding with vertical well. All the production wells are classi- fied into four categories, namely response, small-response, non-response and steam-channeling wells. The corre- sponding control measures are normal production, liquid extraction by adjusting injection-production parameters, huff-puff enhancement and control shut-in. After SAGD implementation in the pilot area, the daily oil production is increased from 69 t/d to 128 t/d, temporary oil-steam ratio is enhanced from 0. 11 to 0.21, which greatly en- hance the production performance. This research could provide significant guidance for the field fine control in super -heavy heterogeneous oil reservoir and could also provide certain relbrence for the vertical-horizontal SAGD devel- opment in similar heavy oil reservoirs.

关 键 词：超稠油油藏 直井-水平井SAGD 非均质 注采参数 精细化调控 风城油田 

分 类 号：TE345[石油与天然气工程—油气田开发工程]