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PROCESS FOR REMOVING AND PREVENTING NEAR-WELLBORE DAMAGE DUE TO ASPHALTENE PRECIPITATION
PROCESS FOR REMOVING AND PREVENTING NEAR-WELLBORE DAMAGE DUE TO ASPHALTENE PRECIPITATION
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机译:沥青烯沉淀法消除和预防井眼损伤的方法
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摘要
In accordance with the present invention, there is now provided a method for removing asphaltene deposits in a well environment such as the wellbore and near-wellbore regions, comprising the injection of deasphalted oil therein to solubilize the asphaltene deposits obstructing the well environment. More specifically, the method of the invention comprises the injection of deasphalted oil into the wellbore and the near-wellbore formation followed by a soaking period and a production period. The method of the present invention has the great advantage of readily dissolving precipitated asphaltene in a well environment without other costly treatments such as the use of solvents like xylene or toluene. Furthermore, the present method does not require the incorporation of any additives in the deasphalted oil.
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