Low toxicity, low foam, and oil based slurry washing agent for well cementing and preparation method thereof
A flushing agent and oil-soaking technology, which is applied in the field of oil drilling and cementing, can solve the problems of water eutrophication, groundwater hazards, and affecting soil plant growth, etc., and achieve good flushing effect and good cementation effect
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Embodiment 1
[0022] A low-toxic, low-foaming oil-based mud flushing agent for well cementing, consisting of the following raw materials (by weight): 65 parts of 5# white oil, 5 parts of soybean oil fatty acid, cardanol polyoxyethylene ether (HLB value 8 ) 10 parts, cardanol polyoxyethylene ether (HLB value 12) 10 parts and distilled water 10 parts.
[0023] The preparation method of the flushing agent is as follows: dissolving cardanol polyoxyethylene ether (HLB value 8) and cardanol polyoxyethylene ether (HLB value 12) in 5# white oil, then adding soybean oil fatty acid and distilled water and stirring Prepared evenly.
Embodiment 2
[0025] A low-toxic, low-foaming oil-based mud flushing agent for well cementing, consisting of the following raw materials (by weight): 55 parts of 5# white oil, 5 parts of soybean oil fatty acid, cardanol polyoxyethylene ether (HLB value 8 ) 10 parts, cardanol polyoxyethylene ether (HLB value 12) 10 parts and distilled water 15 parts.
[0026] The preparation method of described flushing agent is the same as embodiment 1.
Embodiment 3
[0028] A low-toxic, low-foaming oil-based mud flushing agent for well cementing, consisting of the following raw materials (by weight): 65 parts of 5# white oil, 10 parts of soybean oil fatty acid, cardanol polyoxyethylene ether (HLB value 8 ) 10 parts, cardanol polyoxyethylene ether (HLB value 12) 10 parts and distilled water 15 parts.
[0029] The preparation method of described flushing agent is the same as embodiment 1.
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