Patent · US Active

Subsea assist snubbing jack

US11236574B2 · kind B2 · utility

0Cited by

8References

18Claims

0Family size

Assignee

Oceaneering International, Inc. · US

Inventors

John R. Cook · Lower Saucon Township, US
Robert L. Ewen · Cypress, US
Harris Akhtar Iqbal · Porter, US

Key dates

Filing date	Oct 21, 2020
Grant date	Feb 1, 2022
Priority date	—
Expiry date	Oct 21, 2040

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B19/10
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A subsea assist snubbing jack comprises bi-directional slip bowls and can hold light or heavy pipe loads, create clamping load internally without relying on pipe weight or the force of the subsea assist snubbing jack to develop clamping force; do not require pipe motion to unseat the clamp on the pipe; utilize smooth faced inserts that do not mark the pipe; and are suitable for subsea control by wire operation. In embodiments, it is also instrumented to directly measure the pipe weight being held by one or both slip bowls.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.