烟道气泡沫封堵参数优化及微观机理研究  

Optimization of parameters and microscopic mechanism study of flue gas foam

作　　者：王健[1] 覃达 余恒[1] 徐鹏[1] 胡雨涵 Wang Jian;Qin Da;Yu Heng;Xu Peng;Hu Yuhan(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500,China;Southwest Oil and Gasfield Company,CNPC,Chengdu,Sichuan 610051,China)

机构地区：[1]西南石油大学油气藏及地质开发工程国家重点实验室,四川成都610500 [2]中国石油西南油气田分公司,四川成都610051

出　　处：《油气藏评价与开发》2018年第6期33-38,共6页Petroleum Reservoir Evaluation and Development

基　　金：国家科技重大专项"CO2驱油与埋存开发调控技术研究"(2016ZX05016-001)

摘　　要：针对新疆红山嘴油田火驱试验区烟道气气窜和火驱前缘突进、常规封堵技术不适应火驱高温要求等问题,利用泡沫岩心流动装置和可视化微观驱替模型,开展了烟道气泡沫封堵岩心流动实验及烟道气泡沫微观机理研究。实验研究表明:气液比是影响泡沫封堵能力的重要因素,当泡沫体系与气体混注且气液比为1∶1时,泡沫封堵能力最强,采用烟道气泡沫调驱采收率提高了12.6%。微观机理研究表明:新的泡沫堵塞大孔道,增加了流体的渗流阻力,是泡沫能够进行封堵的主要原因;泡沫在多孔介质中的运移是气相和液相的单独运移,且泡沫的捕集和流动状态随外界条件变化而不断转换。该研究可为新疆红山嘴油田火驱试验区控制气窜提供参考依据,有助于进一步完善泡沫体系控制气窜理论。In order to solve the problems such as the breakthrough of flue gas, frontal advance of combustion drive and conventional plugging technology do not meet the requirement of fire drive in the fire drive test area of Hongshanzui oilfield in Xinjiang. We used the device for testing the foam flow in core and the visual microscopic displacement model to study the flow experiment and the microscopic mechanism of flue gas foam. The experimental investigation showed： the gas-liquid ratio was an important factor that affects the capacity of foam blocking; the foam blockage ability was the strongest when the foam system was mixed with gas and the gas-liquid with ratio 1∶1; the oil recovery factor increased by 12.6 % after the flue gas foam injection. The microscopic mecha.nism research showed： the main reason why foam had the ability of blockage was the new foam blocked the big pore and increased the flow resistance of the fluid. The migration of foam in porous media was a kind of separate migration of gas phase and liquid phase; the trap and flow state of the foam were constantly transformed with the change of external conditions. The study can provide reference for the control of gas channeling in the fire flooding test area of Hongshanzui oilfield in Xinjiang and is helpful to improve the theory of bubble control.

关 键 词：烟道气泡沫 控制气窜 微观机理 火驱 

分 类 号：TE357.4[石油与天然气工程—油气田开发工程]