Rock carbonate oil reservoir flow channel adjustment construction process
A construction technology and carbonate rock technology, applied in the fields of production fluids, wellbore/well components, sealing/packing, etc., can solve problems such as inability to inject, and achieve the effect of safe and effective construction
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[0121] Experimental example 1. Adjustment and construction of channel a of a water injection well in Tahe 7 area
[0122] ① Water absorption measurement
[0123] The displacement is 1.0m3 / min and the maximum oil pressure is 23.4mpa, which meets the requirements of safe construction
[0124] ② Pressure test
[0125] Install the flow channel, adjust the ground construction equipment, pressurize to 32Mpa and maintain the pressure drop for 30min. If the pressure drop is lower than 0.5MPa, the pressure drop is qualified.
[0126] ③ Trial injection
[0127] The wellbore volume of the well is 25m3 and the volume of open hole section is 0.82m3. During the test injection, pump 20 m3 of low-density particles with 2% concentration with the designed maximum displacement of 0.5 m3 / min, and then push 75 m3 of oilfield water, and the whole process pressure shall not exceed 3.9 MPa.
[0128] ④ Flow regulating slug injection
[0129] According to the design, the flow regulating slugs are injected....
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