The drag reduction method of thixotropic mud
A technology of thixotropic mud and grouting holes, which is applied in pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc. It can solve the problems of high resistance of thixotropic mud, achieve high drag reduction efficiency, reduce resistance, The effect of easy technology
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[0031] The invention provides a drag reduction method for thixotropic mud, the specific implementation steps of the method are as follows:
[0032] (1) Prepare thixotropic mud for drag reduction:
[0033] Thixotropic mud consists of sodium bentonite, carboxymethyl cellulose (CMC), sodium carbonate (Na 2 CO 3 ), clean water and an appropriate amount of admixture, the mass percent of each composition of the thixotropic mud is: sodium bentonite 10-20%, carboxymethyl cellulose 0.3-0.5%, sodium carbonate 0.2-0.4%, clean water and An appropriate amount of admixture is 80-90%; batching is carried out according to the composition mass percentage of the thixotropic mud, and then the stirred thixotropic mud is put into the slurry storage tank after stirring with a mixer for 12h-24h, so that the bentonite The particles fully absorb water and swell into a colloid; the main properties of the prepared thixotropic mud for drag reduction are: density 1.1-1.17g / cm 3 , viscosity 30-80s (meas...
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