Well fluid containment device with safety mechanism
AssigneeKatch Kan Holdings Ltd.
InventorsQuinn A. J. Holtby, Dallas Laird Greenwood
Life of this patent
Estimating the term…
Abstract
Well fluid containment devices and methods. A housing may be provided for positioning around a pipe. A pipe gripping surface or grappler may be mounted to the housing. The pipe gripping surface resists movement when contacted in a first axial direction. The pipe gripping surface may permit movement when contacted in a second axial direction opposed to the first direction. The pipe gripping surface may, when contacted with a first force in a first axial direction, resist movement with an opposing force that increases as the first force increases. There may be a pressure relief connector between housing sections.
Claims20
A well fluid containment device comprising:
- a housing formed of sections connected together, the housing having an interior wall defining a pipe joint passage;
- a safety mechanism supported by the housing and having a pipe gripping surface that prevents movement when contacted in a first axial direction and permits movement when contacted in a second axial direction opposed to the first direction;
- and
- a pipe seal lining the interior wall near a top end of the housing, and the safety mechanism is closer to the top end than the pipe seal;
- wherein the safety mechanism comprises a shoulder that extends from the housing and defines the pipe gripping surface and the second axial direction is toward a first end of the housing, and the shoulder extends radially inwards and toward the first end, and terminates in the pipe gripping surface.
A well fluid containment device comprising:
- a housing formed of sections connected together, the housing having an interior wall defining a pipe joint passage;
- a safety mechanism supported by the housing and having a pipe gripping surface that prevents movement when contacted in a first axial direction and permits movement when contacted in a second axial direction opposed to the first direction;
- wherein the safety mechanism comprises a shoulder that extends from the housing and defines the pipe gripping surface, and the shoulder is separated into plural members, each plural member defining a respective pipe gripping surface;
- wherein the plural members each comprise arcuate arms circumferentially arranged about the interior wall, in which the plural arms overlap one another, and wherein the second axial direction is toward a first end of the housing, and each of the plural arms is angled toward the first end from an arm base to a respective pipe gripping surface.
A well fluid containment device comprising:
- a housing formed of sections connected together, the housing having an interior wall defining a pipe joint passage;
- a safety mechanism supported by the housing and having a pipe gripping surface that prevents movement when contacted in a first axial direction and permits movement when contacted in a second axial direction opposed to the first direction;
- and
- a pipe seal lining the interior wall near a top end of the housing, and the safety mechanism is closer to the top end than the pipe seal;
- wherein the safety mechanism comprises a shoulder that extends from the housing and defines the pipe gripping surface;
- in which the shoulder is separated into plural members comprising plural arms circumferentially arranged about the interior wall, each plural member defining a respective pipe gripping surface, in which the plural members each have an arcuate shape and overlap one another;
- and
- wherein the second axial direction is toward a first end of the housing, and the shoulder extends radially inwards and toward the first end, and terminates in the pipe gripping surface.
Dependencies are inferred from the claim text.