2results about How to "Full bore" patented technology

The application provides a double-pressure-difference floating coupling, which comprises an outer cylinder, an upper joint arranged at the upper end of the outer cylinder, a lower joint arranged at the lower end of the outer cylinder, a pressure-resistant part arranged in the inner part of the outer cylinder in a sealed and fixed manner, and a drift diameter assembly arranged in the inner part of the outer cylinder, wherein the number of the drift diameter assembly is two, and the drift diameter assembly is arranged above and below the pressure-resistant part respectively, and the drift diameter assembly is configured to be capable of impacting the pressure-resistant part under the action of pressure. The application can realize the full drift diameter of the pipe column after the pressure-resistant part is broken, and can reduce the construction risk, and has the characteristics of simple structure, convenient construction and the like.

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.