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RISS 인기검색어
- 검색키워드
- 저자 : Maratbek Gabdullin (검색결과 2 건)
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Wanli Kang,Haizhuang Jiang,Hongbin Yang,Zhe Li,Bobo Zhou,Yingqi He,Bauyrzhan Sarsenbekuly,Maratbek Gabdullin 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.97 No.-
CO2 flooding has been widely applied in lots of low permeability reservoirs. After extensive CO2 injection,some reservoirs began to show serious gas channeling problems. CO2 foam had been successfully used tosolve gas channeling problems due to its advantages of water selective plugging features (not pluggingoil). In this paper, a novel CO2 foam system was developed for high temperature and high salinity(HTHS)(85 ℃, 60,000 mg/L) aiming at solving the gas channeling in Changqing Oilfield. Taking the foam half-lifeas the evaluation standard, the optimum foam system (0.5 wt% EC-1 + 1 wt% SiO2) for the target reservoirwas determined. The influences of temperature, salinity and pressure on the CO2 foam performance werestudied by high temperature and high pressure(HTHP)method. The ability and mechanism of anti-gaschanneling were studied by experiments of sand packed tube and microscopic displacement,respectively. The results showed that the foam system possessed good foam properties at HTHS withpressure. As the concentration of SiO2 nanoparticles increased, the resistance factor of the foam systemincreased. However, temperature showed an adverse effect on foam stability, the resistance factordecreased with the increase of temperature. The Jamin superposition and emulsion plugging mechanismof foam system was revealed by microscopic displacement experiments.
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Study on an emulsion-type blockage removal agent for heavy oil recovery enhanced by polymer
Tongyu Zhu,Hongbin Yang,Haizhuang Jiang,Xin Kang,Menglan Li,Min Zhang,Wanli Kang,Bauyrzhan Sarsenbekuly,Saule Aidarova,Maratbek Gabdullin 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.89 No.-
In polymerflooding process, the poor solubility of polymer and the wrap of incompletely dissolvedpolymer particles with heavy oil lead to the generation of complicated blockage, which seriously affectsthe normal production of wells. Therefore, how to fabricate an effective blockage removal agent isparticularly important. Based on the blockage from Bohai Offshore Oilfield in China, a blockage removalagent composed of (0.5 wt% potassium persulfate + kerosene (the ratio of kerosene: blockage is 3:5)+0.3 wt% OP-10, the oil-water ratio is 1:9) was developed. The removal effect and mechanism werecharacterized by weight loss method and core test. Moreover, the emulsification property of the removalagent was also evaluated by microscopic appearance. The results showed that the blockage removal agentcan be formulated as an O/W emulsion and had good stability for more than 72 h. Core test showed thatthe permeability had a significant improvement after injection of removal agent. The emulsion-typeremoval agent can demulsify after contact with the blockage, then the oil-soluble detergent as internalphase in emulsion can be released which contributes to the wash off of heavy oil. Accompanied with thepolymer degradation by the oxidant, this agent realized the effective dissolution and removal of blockage.
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