2results about How to "Achieve mining" patented technology

The present application relates to a kind of double-sealing layered reconstruction test pipe column and its layered test method, test pipe column includes sequentially arranged first pipe column compensator, ball pressurized operation cycle valve, anchoring sealing release device, steel wire plug tool, first hydraulic anchor, first hydraulic recoverable packer, ball pressurized operation fracturing sliding sleeve, pipe column compensator, second hydraulic anchor, second hydraulic recoverable packer, E type ball seat and E type normally open valve.The present application can realize lower reservoir replacement acid, reconstruct lower reservoir and production, reconstruct upper reservoir and production, if lower reservoir water, can close E type normally open valve and block lower reservoir, produce upper reservoir, if need to block reservoir, can use steel wire plug tool to block lower reservoir, then from anchoring release device release, realize temporary blocking lower reservoir, test is carried out in upper return.

The invention belongs to the technical field of oil and gas reservoir type gas reservoirs, and discloses a reservoir building method for reconstructing a water-flooded oil and gas reservoir into an underground gas reservoir. A certain number of injection and production wells are arranged at the gas layer height position of the water-flooded oil and gas reservoir, meanwhile, a certain number of drainage wells are arranged at the water layer and the water-flooded oil layer to conduct a large amount of rapid drainage operation, and old production wells at the middle and low positions can be preferably selected as the drainage wells. In order to improve the drainage speed, a large-displacement electric submersible pump is arranged at the bottom of the drainage well to actively and rapidly drain water. Along with continuous injection of natural gas, an effective artificial gas cap is gradually formed. Under the driving of high-pressure natural gas and the action of the electric submersible pump, injected water, water layer water, invasion water and crude oil are quickly discharged to the ground, and the natural gas storage space and the storage capacity are gradually enlarged, so that the double effects of reconstructing the gas storage from the water-flooded oil and gas reservoir and improving the crude oil recovery rate are realized.