FIELD: oil and gas industry.
SUBSTANCE: invention is related to drilling of wells. Water-based drill fluid contains cationic salt of polyamine carboxylic acids at alkali pH higher than 9.0.
EFFECT: increased bit drilling rate in carbonaceous rocks, reduced time of well-drilling, reduced corrosion of drill stem and surface of drilling equipment.
13 cl, 1 tbl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| WELL COMPLETION METHOD | 2004 |
|
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| HIGHLY INHIBITED CLAY-FREE EMULSION DRILLING MUD | 2018 |
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|
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|
RU2601636C2 |
| SOLID PHASE-FREE DRILLING MUD WITH IMPROVED LUBRICANT PROPERTIES | 2005 |
|
RU2290426C1 |
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|
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|
RU2753910C1 |
