Water-soluble organic salt weighting agent for drilling fluid for oilfields as well as preparation method and application thereof
An organic salt and water-soluble technology, applied in the field of water-soluble organic salt weighting agents, can solve the problems of not disclosing the specific components of the weighting agent, not giving the specific composition of the weighting agent, not mentioning the preparation method, etc., and it is difficult to overcome the viscosity. Control, low solid phase content, good effect
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Embodiment 1
[0032] Prepare the water-soluble organic salt weighting agent of the present embodiment according to the following raw material formula:
[0033] Organic acid: 95 kg ClCOOH, 75 kg CH 2 BrCOOH, 80 kg CH 3 CHBrCOOH, 130 kg CH 3 CH 2 CHClCOOH, 115 kg CH 3 CH 2 CH 2 CHBrCOOH, 50kg CH 3 CH 2 CH 2 CH 2 CHBrCOOH, the purity of the above organic acids are 93%, 99%, 95%, 94%, 94%, 93% respectively.
[0034] Compound alkali: 23 kg NaOH, 58 kg KOH, 35 kg ammonia water, 10 kg N(CH 3 ) 3 , 5 kilograms of epichlorohydrin, the purity of each alkali above is respectively 96%, 92%, 25%, 30%, 99%.
[0035] Concrete preparation steps are as follows:
[0036] a. Add various organic acids into the kneading reactor, knead and stir for 10-30 minutes until the stirring is uniform;
[0037] b. Add compound base, make it and each component in step a stir evenly and be pasty, continue to knead and stir for 1 hour, in the process of stirring, reaction exothermic, moisture evaporates natural...
Embodiment 2
[0041] Prepare the water-soluble organic salt weighting agent of the present embodiment according to the following raw material formula:
[0042] Organic acid: 90 kg ClCOOH, 80 kg CH 2 BrCOOH, 75 kg CH 3 CHClCOOH, 125 kg CH 3 CH 2 CHBrCOOH, 125 kg CH 3 CH 2 CH 2 CHClCOOH, 45 kg CH 3 CH 2 CH 2 CH 2 CHBrCOOH, the purity of the above organic acids are 93%, 99%, 95%, 94%, 94%, 93% respectively.
[0043] Compound alkali: 25 kg NaOH, 62 kg KOH, 36 kg ammonia water, 10 kg N(CH 3 ) 3 , 5 kilograms of epichlorohydrin, the purity of each alkali above is respectively 96%, 92%, 25%, 30%, 99%.
[0044] The preparation process is basically the same as in Example 1. The product was tested for performance, and the results are shown in Table 1.
Embodiment 3
[0046] Prepare the water-soluble organic salt weighting agent of the present embodiment according to the following raw material formula:
[0047] Organic acid: 120kg HCOOH, 95kg CH 2 ClCOOH, 50kg CH 3 CHBrCOOH, 130 kg CH 3 CH 2 CHBrCOOH, 80 kg CH 3 CH 2 CH 2 CHBrCOOH, 55 kg CH 3 CH 2 CH 2 CH 2 CHClCOOH, the purity of the above organic acids are 93%, 99%, 95%, 94%, 94%, 93% respectively.
[0048] Compound alkali: 27 kg NaOH, 60 kg KOH, 36 kg ammonia water, 10 kg N(CH 3 ) 3 , 5 kilograms of epichlorohydrin, the purity of each alkali above is respectively 96%, 92%, 25%, 30%, 99%.
[0049] The preparation process is basically the same as in Example 1. The product was tested for performance, and the results are shown in Table 1.
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