| 摘要 |
FIELD: oil and gas production. ^ SUBSTANCE: well-killing fluid contains 85-95% petroleum and 5-15% additive, which consists of at least two components selected from group represented by tall oil, petroleum processing waste, and castor oil and additionally contains phosphoric acid ester. ^ EFFECT: reduced fire and explosion risk and reduced cost due to use of inexpensive components. ^ 2 cl, 1 tbl, 11 ex |
