LIU Yonghui,WU Pengbo,LUO Chengcheng,et al.Experimental study on the applicable range of surfactant injection technology[J].Journal of Shenzhen University Science and Engineering,2020,37(5):490-496.[doi:10.3724/SP.J.1249.2020.05490]





Experimental study on the applicable range of surfactant injection technology
1)西南石油大学油气藏地质及开发工程国家重点实验室, 四川成都 610500
3)中国石油集团川庆钻探工程有限公司,四川成都 610501
LIU Yonghui1 WU Pengbo1 LUO Chengcheng1 LIU Tong2 NI Jie2 and WANG Hua3
1) State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan Province, P.R.China
2) Petroleum Engineering Technology Institute, Southwest Oil & Gas Branch, SINOPEC, Deyang 618000, Sichuan Province, P.R.China
3) CNPC Chuanqing Drilling Engineering Co. Ltd., Chengdu 610501, Sichuan Province, P.R.China
油气田开发 泡沫排水 可视化实验 表面张力 流型 井筒压降持液率携液临界气流速
oilfield development foam deliquification visual experiment surface tension flow pattern wellbore pressure drop liquid holdup critical gas velocity of liquid loading
In order to clarify the drainage effect of the foam drainage process under various flow patterns and effectively guide the well selection, we design a set of visual air-water-foam three-phase pipe flow simulation experimental apparatus. At first we determine the foam concentration by surface tension experiment, and then we conduct different foam lifting experimental tests with different gas superficial velocities and liquid superficial velocities. We obtain the following results. Firstly, adding the surfactant to the gas-water two-phase flow can effectively reduce the two-phase flow pressure drop and significantly suppress the flow fluctuation. Secondly, the degree of decrease in pressure drop and liquid holdup in the wellbore increases first and then decreases with increasing of the gas flow rate. Thirdly, in the effective range of the foam lift, gas and water in the wellbore are vigorously agitated, prompting the added surfactant to fully contact with the water, thereby generating a large amount of foam, reducing the wellbore pressure drop and liquid holdup. Fourthly, the critical gas flow rate to carry the liquid is taken as the upper limit of the effective range of the foam lift. The lower limit in this range is the transition boundary from bubble flow to slug flow, and the optimal flow rate of the foam lift is determined as the transition boundary from slug flow to churn flow. In conclusion, limits of foam drainage application connect the two-phase flow pattern transition boundary with the results of foam experiments. The clarification of limits of foam drainage application will help reduce the cost of gas well deliquification and provide a theoretical basis for the efficient application of the foam drainage technology in gas fields.


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Foundation:National Natural Science Foundation of China(51534006);National Science and Technology Major Project of China(2016ZX05017-005-003);Open Fund of Stata Key Laboratory of Oil and Gas Reservoir Geology and Exploitation(PLN1517)
Corresponding author:Professor LIU Yonghui. E-mail: swpilyh@126.com
Citation:LIU Yonghui, WU Pengbo, LUO Chengcheng, et al. Experimental study on the applicable range of surfactant injection technology[J]. Journal of Shenzhen University Science and Engineering, 2020, 37(5): 490-496.(in Chinese)
引文:刘永辉,吴朋勃,罗程程,等.泡沫排水采气适用界限的实验研究[J]. 深圳大学学报理工版,2020,37(5):490-496.
更新日期/Last Update: 2020-07-26