Rheological property of low-damage,ideal packing,film-forming amphoteric/sulfonation polymer drilling fluids |
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| Authors: | ZHANG Hong-xia YAN Jie-nian SHU Yong ZHAO Sheng-ying Beijing China |
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| Affiliation: | ZHANG Hong-xia,YAN Jie-nian,SHU Yong,ZHAO Sheng-ying(Ministry of Education Key Laboratory of Petroleum Engineering,China University of Petroleum(Beijing),Beijing 102249,China) |
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| Abstract: | Low-permeability dense reservoirs,including micro-fractured reservoirs,are commonly characterized by high content of clay substances,high original water saturation,high sensitivity to invasive fluids,high capillary pressure,complicated structure and anisotropic,high flow-resistance and micro pore throats etc,.Generally they also have lots of natural micro fractures,probably leading to stress sensibility.Main damaging factors in such reservoirs are water-sensibility and water-blocking caused by invasive flui... |
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| Keywords: | low-permeability dense gas condense reservoir amphion and sulfonation polymer drilling fluid damage controlling water-blocking ideal packing theory(IPT) film-forming agent rheological properties |
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