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INNOVATIVE LOW TEMPERATURE BREAKER SYSTEM SUITABLE FOR FRACTURING ULTRA LOW TEMPERATURE INDIAN RESERVOIRS
INNOVATIVE LOW TEMPERATURE BREAKER SYSTEM SUITABLE FOR FRACTURING ULTRA LOW TEMPERATURE INDIAN RESERVOIRS
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机译：适用于压裂印度洋超低温储层的新型低温破碎机系统
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摘要
A formulation and a process for preparing hydraulic fracturing fluid suitable for carrying out fracturing in wells having ultra low temperatures and shallow reservoirs, the process comprising the steps of taking sea water in a pre-cleaned gel storage tank and adding 0.03 wt % Biocide to the tank during filling of water; mixing to the tank a 2-4 wt % Clay Hydration Suppressant with constant agitation with the help of a blender unit; characterized in that in the subsequent steps, 0.5 wt % water softener from group consisting salt of amino-poly carboxylic acid is added to the tank while at constant agitation with the help of same blender unit; and wherein pH of solution in the tank at this stage is adjusted to = 8.50 by adding 0.4-0.45 wt % soda ash; adding 0.60-0.70 wt % gelling agent Gd.-II in the same blender unit having the facility of dry chemical mixing fitted with high rate water jetting system; and wherein after mixing and homogenizing of the required amount of the gelling agent into the tank through the blender unit, 0.04 wt % of ammonium persulphate is mixed to the tank with the help of the blender unit; adjusting the pH of the tank to = 7 by adding 0.13-0.15 vol % of acetic acid through the blender; adding 0.50% oil specific non-emulsifier and 0.5 wt % of surfactant to the tank with help of the blender unit; allowing sufficient hydration time by keeping the neutral linear gel in the tank on agitation/circulation mode and when the gel in tank attains the required gel viscosity of 40 cps (at 511 s-1), adding and mixing thoroughly 0.35-0.45 wt % soda ash to the blender unit to raise the pH of the base gel to = 9.5; adding to the gel tank and mixing thoroughly 0.04 wt % of SA-102; and wherein 0.06 wt % of APS + 0.06 wt % of SA-102 and 0.04-0.05 wt % of borax is mixed on the fly.
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