Tee short joint

Abstract

The invention provides a three-way nipple. The three-way nipple comprises a seal connector and a stop valve. The seal connector comprises a communicating body, a first connection part, a second connection part, a third connection part and a three-way hollow inner cavity. The communicating body is connected with the first connection part, the second connection part and the third connection part. The three-way hollow inner cavity communicates with the first connection part, the second connection part and the third connection part through the communicating body. The first connection part is used for being connected with a first outside blowout prevention pipe. The second connection part is used for being connected with a second outside blowout prevention pipe. The third connection part is connected with the stop valve. According to the technical scheme of the three-way nipple, when the blowout prevention pipes in a high-pressure well are blocked, paraffin remover is ejected into the blowout prevention pipes by controlling the stop valve, the problem that the blowout prevention pipes are blocked is solved, then high pressure in the blowout prevention pipes is relieved out by opening the stop valve, and the high-pressure risk possibly existing in subsequent operation treatment is avoided.

Description

technical field [0001] The invention relates to the technical field of connectors, in particular to a three-way short joint. Background technique [0002] In the process of oil layer development, the crude oil bears certain pressure in the oil and gas layer. When crude oil flows into the bottom of the well from the oil layer, and then lifts from the bottom of the well to the vicinity of the wellhead along the wellbore, the pressure and temperature will decrease accordingly, and the wax originally dissolved in the crude oil will precipitate and adhere to the inner wall of the tubing to form wax deposits. In high-pressure wells with severe wax deposition, the production channels are small, and the production string may even be blocked, resulting in continuous increase of crude oil pressure in high-pressure wells, and finally the risk of crude oil injection. Therefore, there is an urgent need for a pressure relief device for releasing the high pressure in oil wells with severe...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a three-way pup joint, which can solve the problem of blocked blowout preventer by controlling the stop valve to inject wax remover into the blocked blowout preventer, and then release the high pressure inside the blowout preventer by opening the stop valve. Released, avoiding the possible high pressure risk in subsequent operations

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