High efficiency fracturing method using coiled tubing water-jet and soluble rubber plugs
A hydraulic jetting and soluble technology, applied in chemical instruments and methods, earthwork drilling, and fluid extraction, can solve the problems of reduced construction efficiency, complicated isolation tool strings, prolonged operation time, etc., so as to improve construction efficiency and success rate , Low cost of construction technology, and the effect of avoiding sand stuck pipe string
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[0027] Coiled tubing hydrojet and soluble rubber plugs are used as a high-efficiency fracturing method. include:
[0028] Pre-construction preparation stage: According to the number of fracturing stages, prepare enough base fluid, cross-linking liquid, cross-linking control agent and gel breaker for soluble rubber plugs to ensure that the gelation and breaking time of the rubber plugs is controllable and the strength is reliable; After the well and the well cleaning are qualified, the coiled tubing carries the sandblasting perforating gun into the wellbore, and the pipe string is checked so that the nozzle of the spray gun is aligned with the fracturing position of the first stage; Check high and low pressure pipelines and manifolds; ground pipeline pressure test, keep the pressure for 5 minutes without puncture or leakage;
[0029] Sandblasting and perforating stage: the coiled tubing carries the sandblasting perforating gun into the wellbore, the pipe string is checked so t...
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