公开(公告)号：US20240152165A1

公开(公告)日：2024-05-09

申请号：US18498248

申请日：2023-10-31

申请人： TCO AS

发明人： Adrian Caruana

IPC分类号： G05D16/00 ,  F16K1/38 ,  F16K1/42 ,  F16K27/02

CPC分类号： G05D16/024 ,  F16K1/38 ,  F16K1/42 ,  F16K27/0254 ,  E21B34/00

摘要： A flow tube including: a pin; a seat; and a guide tube, the pin and the seat are arranged at least partially in the guide tube; and wherein: the flow tube is arranged to have a closed position, wherein: the pin is in contact with the seat and fluid flow through the seat is reduced or prevented; the flow tube is arranged to have an open position, wherein: the pin is not in contact with the seat and fluid flow is increased through the seat when compared to the closed position; and the flow tube is arranged to have a forced open position, wherein: the seat is arranged such that when a force above a threshold force is applied to the seat: the seat moves away from the pin, the pin is not in contact with the seat, and the flow tube cannot move to the closed position again.

公开(公告)号：US20220268360A1

公开(公告)日：2022-08-25

申请号：US17668353

申请日：2022-02-09

申请人： TCO AS

发明人： Adrian Caruana

IPC分类号： F16J3/04 ,  F16J15/52

摘要： A metal bellows for downhole use includes: a bellows capsule with a first end and a second end; an inner diameter side and an outer diameter side arranged between the first end and the second end; where the bellows capsule comprises a first bellows convolution and second bellows convolution and optionally additional bellows convolutions; and each bellows convolution comprises: a root on the inner diameter side of the bellows capsule; a first sidewall extending from the root toward the outer diameter side of the bellows capsule with a first connection point at the distal end; a second sidewall extending from the root toward the outer diameter side of the bellows capsule with a second connection point at the distal end and wherein the second sidewall is on the opposite side of the root as the first sidewall; wherein: the bellows convolutions are formed as a single piece; and the second sidewall connection point of the first bellows convolution is permanently affixed to the first sidewall connection point of the second bellows convolution.