Abstract:Statoil is operating several fields where downhole continuous injection of scale inhibitor is applied. The objective is to protect the upper tubing and safety valve from (Ba/Sr)SO 4 or CaCO 3 scale, in cases where scale squeezing may be difficult and costly to perform on a regular basis, e.g. tie-in of subsea fields. Continuous injection of scale inhibitor downhole is a technically appropriate solution to protect the upper tubing and safety valve in wells that have scaling potential above the production packer… Show more
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