| 简介 |
An aqueous mixture of a non-toxic, low pH, antimicrobial, acidic composition having a pH between approximately 0.5 and approximately 3.5 is used in a drilling fluid and a stuck pipe additive. One embodiment of the stuck pipe additive composition includes an alkali metal halide salt in a range of approximately 10-35 weight %; a sequenching agent in a range between 2 - 8 weight %, a low pH, non toxic acid composition in a range of 0.5 - 20 weight percent and water in a range of 7 - 88.5 weight %. As a drilling fluid, it maintains well control and removes drill cuttings from holes drilled into the earth. As a spotting fluid, it frees a stuck drill stem in the annulus of a bore hole in minutes. |
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