Tubing hanger running tool and subsea test tree control system

a technology of test tree and running tool, which is applied in the direction of fluid removal, sealing/packing, and well accessories, etc., can solve the problems of requiring expensive equipment rental, cumbersome process of running sstt, and time-consuming for well operators, so as to reduce the time of rig, reduce the effect of control umbilical, and enhance safety

Inactive Publication Date: 2005-10-06
MCGUIRE LINDELL V
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011] Various features of the invention may provide one or more of the following capabilities. Using the sealing capabilities of the BOP and the existing hydraulic power and control functions allows the user to avoid having to obtain the umbilical, the control unit and a hydraulic power supply. Also, rig time is lessened due to the elimination of the necessity of hooking up the aforementioned components, as well as the time required to run the umbilical. Savings can be as much as one-half of the standard cost of renting and running a known subsea test tree. Safet

Problems solved by technology

The process of running the SSTT is cumbersome and time consuming to the well operator and requires the rental of expensive equipment (i.e. control panel, hydraulic power supply, control umbilical, hose reel, etc.).
The cost can include the rent

Method used

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  • Tubing hanger running tool and subsea test tree control system
  • Tubing hanger running tool and subsea test tree control system
  • Tubing hanger running tool and subsea test tree control system

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Embodiment Construction

[0020] The features and other details of the invention will now be more particularly described with reference to the accompanying drawings. It will be understood that particular embodiments described herein are shown by way of illustration and not as limitations of the invention. The principal features of this invention can be employed in various embodiments without departing from the scope of the invention.

[0021] Embodiments of the invention are related to subsea well technology, and specifically to an improved tubing hanger running tool (THRT) and subsea test tree (SSTT). Embodiments of the invention eliminate a control umbilical and associated hydraulic power pack, as well as associated reel and control panel. Embodiments of the invention use a choke and / or kill line of the blowout preventer system (BOP) to supply hydraulic power. Further, embodiments of the invention use battery powered shuttle valves to direct hydraulic fluid through internal piping and ports to perform many f...

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Abstract

A system for providing power to elements down-hole in a subsea well includes a control pod having at least one shuttle valve, a down-hole hydraulically-actuated device having at least one internal porting mechanism in fluid communication with the at least one shuttle valve, a blowout preventer stack connected to the down-hole device, the blowout preventer stack including a first ram and a second ram, and a choke line in fluid communication with an area between the first ram and the second ram. The at least one shuttle valve controls distribution of hydraulic pressure applied through the choke line to the internal porting mechanism for selective distribution of power to the hydraulically-actuated device.

Description

RELATED APPLICATIONS [0001] This application claims priority to U.S. Provisional Application No. 60 / 558,078, entitled, “Subsea Test Tree,” filed Mar. 30, 2004, and to U.S. Provisional Application No. 60 / 580,474, entitled, “Tools for Completing Subsea Wells,” filed Jun. 17, 2004, each of which is herein incorporated by reference.FIELD OF THE INVENTION [0002] This invention relates to subsea well technology, and specifically to an improved tubing hanger running tool and subsea test tree control system and method of controlling hydraulic / electric tools or equipment used during drilling, testing or completion of a subsea well. BACKGROUND OF THE INVENTION [0003] A subsea well constructed for producing hydrocarbons consists of a series of concentric drilled and cased bores. The casings typically include sections of threaded and coupled pipes screwed together. The casings are run into the well bore, suspended (landed) in a wellhead attached to the first casing string (referred to as conduc...

Claims

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Application Information

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IPC IPC(8): E21B29/12E21B33/035E21B33/12E21B34/04
CPCE21B34/045E21B33/0355
Inventor MCGUIRE, LINDELL V.
Owner MCGUIRE LINDELL V
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