渗透率比值对SAGD开发影响因素研究
首发时间:2023-09-14
摘要:蒸汽辅助重力泄油(Steam-assisted gravity drainage,SAGD)技术是开采稠油油藏的一种行之有效的技术。SAGD开采的关键是保证蒸汽腔角度发育良好且有较好的采出效果,因此针对SAGD开发过程中蒸汽腔发育的问题,对影响蒸汽腔发育的水平渗透率与垂直渗透率比值这个重要油藏参数进行研究分析。分别建立多井组下的双水平井模型和直井-水平井组合模型的概念模型,运用CMG-STARS软件模拟不同渗透率比值对SAGD蒸汽腔和注采效果的影响各类因素对其影响。结果表明:垂直方向渗透率和水平方向渗透率的比值对SAGD注采效率的影响较大。
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Study on the influence factors of permeability ratio on SAGD development
Abstract:Steam assisted gravity drainage (SAGD) is an effective technique for extracting heavy oil reservoirs. The key to SAGD production is to ensure that the Angle of the steam chamber is well developed and has a good recovery effect. Therefore, in view of the problem of the Angle development of the steam chamber in the process of SAGD development, the ratio of horizontal permeability to vertical permeability, an important reservoir parameter, is studied and analyzed. The two horizontal well model and the vertical and horizontal well combination model were established respectively in the multi-well grStudy on the influence factors of permeability ratio on SAGD developmentStudy on the influence factors of permeability ratio on SAGD developmentoup. The CMG-STARS software was used to simulate the influence of different permeability ratios on SAGD steam chamber and injection-production effect. The results show that the ratio of vertical permeability to horizontal permeability has a great influence on the efficiency of SAGD injection and production.
Keywords: SAGD steam chamber permeability ratio
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