长岩心注CO2气水交替驱试验模拟研究
Simulation Research on C02 and Water Flooding of Long Core Test
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- 引用格式:
-
吕蓓,马庆,程宏杰.长岩心注CO2气水交替驱试验模拟研究[J].天然气与石油,2015,33(2):0.doi:
Lv Bei ; Ma Qing ; Cheng Hongjie.Simulation Research on C02 and Water Flooding of Long Core Test[J].Natural Gas and Oil,2015,33(2):0.doi:
- DOI:
- 作者:
- 吕 蓓1 马 庆2 程宏杰3
Lv Bei ; Ma Qing ; Cheng Hongjie
- 作者单位:
- 1. 新疆油田公司工程技术研究院，2. 克拉玛依职业技术学院，3. 新疆油田公司勘探开发研究院
1.Institute of Engineering and Technology, Xinjiang Oilfield Company;2.Karamay Vocational and Technical College;3Research Institute of Exploration and Development, Xinjiang Oilfield Company
- 关键词:
- CO2；长岩心；短岩心；数值模拟；气水交替；注气提高采收率
C02; Long core; Short core; Numerical simulation; Water and gas flooding; Gas injection EOR
- 摘要:
- 为了进一步提升水驱油藏生产潜力，G 94416井区开展了室内岩心注气（CO2）驱替试验研究。长岩心注气（CO2）驱替试验相对于短岩心注气（CO2）驱替试验能更准确反映渗流参数，所以室内试验进行了长岩心注水驱替和注气（CO2）水交替驱替方式下驱油效率的对比。试验验证了注入CO2气体可降低原油界面张力，增强原油流动性并有效补充地层能量。而长岩心驱替试验数值模拟研究的主要目的是根据实验数据，对相对渗透率曲线、毛管压力曲线等数据进行修正，为油藏数值模拟研究提供符合实际的基本渗流特征参数。在完成G 94416井油藏流体相态拟合之后，利用多组分模型软件对长岩心气水交替驱替实验数据进行了数值模拟研究，取得了良好的拟合效果。
To further enhance production potential of water-drive reservoirs, core gas-drive (C02) laboratory displacement test is carried out in G 94416 Wellblock. Since long-core gas injection (C02) displacement test can reflect seepage parameters more accurately than short-core gas injection, this test contrasts oil displacement efficiency in long-core water injection displacement and long-core gas and water alternate displacement mode and the test also proves that C02 injection can reduce crude oil inteifacial tension, enhance oil mobility and replenish formation energy effectively. The main purpose of numerical simulation study on long core displacement experiment is to correct such data as permeability saturation curves and capillary pressure curves according to experimental data and provide basic seepage characteristic parameters matching the actual ones for numerical reservoir simulation study. After phase matching of oil reservoir fluids in G 94416 wellblock is completed, multi-component model software is used to conduct numerical simulation study on long-core gas and water alternate displacement test data and good effect has been obtained.
