Liu Heng, Teng Liyong, Liang Yubiao. STUDY ON SELECTIVE INJECTION TECHNOLOGY BY INJECTING BALLS[J]. Oil Drilling & Production Technology, 2002, 24(5): 44-46. DOI: 10.3969/j.issn.1000-7393.2002.05.014
Citation: Liu Heng, Teng Liyong, Liang Yubiao. STUDY ON SELECTIVE INJECTION TECHNOLOGY BY INJECTING BALLS[J]. Oil Drilling & Production Technology, 2002, 24(5): 44-46. DOI: 10.3969/j.issn.1000-7393.2002.05.014
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STUDY ON SELECTIVE INJECTION TECHNOLOGY BY INJECTING BALLS

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  • When viscous crude oil well is in the middle and late period of thermal recovery and gas injection, if there are thin intercalation, no intercalation or high permeability reservoir and low permeability reservoir are crossing, gas inject effect will be bad, and conflict will occur between intercalations, so as to normal packer selective injection technology can’t be used for above 3 types of wells.To resolve this problem, the selective injection technology by injecting balls was studied and tested on site, and tests were in 9 wells in Liaohe Oilfield, at last yield is totally increased by 2212t and efficiency is 100%.
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