发明名称 METHOD OF SEPARATING WEIGHTING MATERIAL FROM DRILLING MUD
摘要 <p>A method of separating weighting material from drilling mud by breaking down the drilling mud by subjecting it to the influence of a direct current magnetic field while simultaneously putting the drilling mud under vacuum. </p>
申请公布号 WO1980002719(A1) 申请公布日期 1980.12.11
申请号 SU1980000080 申请日期 1980.05.22
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