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Drilling riser adapter (11) connecting member possessing submarine operation

A technology of adapters and riser joints, applied in the field of subsea operability systems, can solve the problems of loss control pipelines, automation and non-automation riser adapters cannot be provided, deteriorated, etc., to achieve less time and workload Effect

Inactive Publication Date: 2012-09-19
VETCO GRAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Also, automated and non-automated riser adapters do not provide a way to disconnect the riser from the LMRP once the adapter and components are on the seabed
Thus, when an emergency requires the ability to quickly disconnect the existing riser from the riser adapter while the LMRP remains on the seabed, the operator cannot do so quickly
This could potentially further exacerbate an already potentially dangerous situation
Control of emergency release from vessel and possible loss of control line

Method used

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  • Drilling riser adapter (11) connecting member possessing submarine operation
  • Drilling riser adapter (11) connecting member possessing submarine operation
  • Drilling riser adapter (11) connecting member possessing submarine operation

Examples

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Embodiment Construction

[0026] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the illustrated embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like numbers refer to like elements throughout, and prime symbols, if used, indicate similar elements in alternative embodiments.

[0027] In the following discussion, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without such specific details. Additionally, for the most part, details regarding drilling operations, rig operations...

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Abstract

The invention relates to a drilling riser adapter (11) connecting member possessing a submarine operation. A drilling riser adapter can be connected with a riser (17) changeable to release the riser from a subsea wellhead assembly. The adapter has a hydraulically actuated engagement assembly (41) for selectively engaging and disengaging a lower end of the marine riser (17). The adapter also includes a control panel (141) communicatively coupled to the engagement assembly (41) for actuating the engagement assembly (41) to engage and disengage the lower end of the marine riser (17). The adapter includes a hydraulic fluid pressure receptacle (135) on the control panel (141) for engagement by a remotely operated vehicle (ROV) to supply hydraulic fluid pressure to the engagement assembly (41). The adapter may be actuated subsea to release a first riser from the wellhead assembly, and connect to a second riser.

Description

technical field [0001] The present invention relates generally to offshore well riser adapters, and in particular to subsea operable systems for connecting riser adapters to subsea equipment. Background technique [0002] In offshore drilling operations, the operator will perform drilling operations through a drilling riser. A drilling riser extends between the subsea wellhead assembly and the drilling vessel at the seabed. Drilling risers are made up of many individual joints or sections. The sections are secured to each other and are fed from the riser deployment floor of the drilling vessel. Drilling risers also typically have a number of auxiliary conduits extending around the main base pipe. Auxiliary piping supplies hydraulic fluid pressure to the subsea blowout preventer and lower subsea riser suite. [0003] The lower end of the drilling riser has an adapter coupled to a lower subsea riser kit (LMRP) to connect the riser to the LMRP. Various adapters have been u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/038E21B43/013
CPCE21B17/085E21B33/038
Inventor E·D·拉森R·A·布卢
Owner VETCO GRAY
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