Browse Prior Art Database

Down-Hole Multi-Control Manifold

IP.com Disclosure Number: IPCOM000230739D
Publication Date: 2013-Sep-09
Document File: 6 page(s) / 801K

Publishing Venue

The IP.com Prior Art Database

Abstract

Abstract: The Down-Hole Multi-Control Manifold (DHMCM) design presented within this paper provides a method for a single hydraulic control line to operate multiple downhole (wellbore) tools independently (or co-dependently), secure additional control lines, and serve as a tubing centralizer. Additionally this design displaces filtered annular fluid (uphole through the control line) or adds fluid to the annulus. The design is modular and expandable so configurations can be setup as needed. The design can be daisychained to operate as many tools as needed. There are no exposed fittings and/or internal features/parts, which reduce the possibility of damage while running in hole (RIH) or pulling out of hole (POOH). Although the illustrations present an external clamp-design, the design can be hinged or integrated into a single piece mandrel. All sealing is done with metal to metal seals, which provide a broad range of well condition applications. In Figures 1 and 2 the idea has been configured as follows. The pressure inlet (1) conveys hydraulic fluid/pressure (from a surface control line) to the device housing/manifold (8). The uncontrolled outlet (2) conveys uncontrolled fluid/pressure to down-hole tools, a pass-through of the fluid and logic control. Controlled outlets (3) convey controlled fluid/pressure to operate down-hole tools. The housing (8) distributes the fluid/pressure to multiple outlets through machined conduits and cross drilled ports (6). The housing (8) has a seal surface for the metal to metal plugs of the cross drilled ports (6). The housing (8) is a three piece design that attaches to tubing/pup joint (9) with screws. The housing (8) provides a pass through channel for control lines (hydraulic/electric) which are secured by retainer (5). The housing (8) contains and protects control modules (7), annular fluid module (4), fittings for inlet (1) pass through outlet (2). The housing (8) acts as a centralizer for tubing in casing. The annular fluid module with filter (4) allows fluid in annulus to be displaced (and filtered) up the control line to the surface and can have a burst disk (or pressure activated valve) to prevent undesired annulus to control line communication. The control module (7) controls fluid/pressure to down-hole tools. Multiple control module designs enable the DHMCM to be configured for a variety of applications. Modules with rupture disks are used for one-time pressure activation and two-way communication after the rupture disk bursts. Modules are configured to have normally-open valves. An internal hydrostatic chamber forces the valve closed once a pre-determined pressure is exceeded. Likewise a module with a normally-closed valve remains closed until a pre-determined pressure is reached. Another configuration of the control module is flow-operated valves. The valve remains open until the fluid flow-rate is exceeded, then the valve maintains the flow-rate or closes all-together (based on the intended need). Modules with temperature activated valves remain open (or closed) based on the surrounding environment. Modules configured with multi-stage valve operation are designed to be normally-closed, open, closed or normally-open, closed, open. For example, a valve that is normally closed from 0-1,000 psi, then the valve opens from 1,000-2,500 psi, and then closes again at pressures above 3,000 psi. Modules are configured with valves that operate with a combination of the above individual features. For example, one valve is designed to open after pressure is applied for a pre-determined amount of time. Fluid flows within an internal cavity after a predetermined pressure is exceeded. The flow of the fluid is constrained within a pathway that takes a pre-determined amount of time until the fluid operates the valve to allow fluid flow through the module. Additionally the control modules have options to the valve designs that implement pressure bleeds to reset the functionality.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 51% of the total text.

Page 01 of 6

055162 

Abstract:

The Down-Hole Multi-Control Manifold (DHMCM) design presented within this paper provides a method for a single hydraulic control line to operate multiple downhole (wellbore) tools independently (or co-dependently), secure additional control lines, and serve as a tubing centralizer. Additionally this design displaces filtered annular fluid (up- hole through the control line) or adds fluid to the annulus. The design is modular and expandable so configurations can be setup as needed. The design can be daisy- chained to operate as many tools as needed. There are no exposed fittings and/or internal features/parts, which reduce the possibility of damage while running in hole (RIH) or pulling out of hole (POOH). Although the illustrations present an external clamp-design, the design can be hinged or integrated into a single piece mandrel. All sealing is done with metal to metal seals, which provide a broad range of well condition applications.

Description

In Figures 1 and 2 the idea has been configured as follows. The pressure inlet (1) conveys hydraulic fluid/pressure (from a surface control line) to the device housing/manifold (8). The uncontrolled outlet (2) conveys uncontrolled fluid/pressure to down-hole tools, a pass-through of the fluid and logic control. Controlled outlets (3) convey controlled fluid/pressure to operate down-hole tools. The housing (8) distributes the fluid/pressure to multiple outlets through machined conduits and cross drilled ports


(6). The housing (8) has a seal surface for the metal to metal plugs of the cross drilled ports (6). The housing (8) is a three piece design that attaches to tubing/pup joint (9) with screws. The housing (8) provides a pass through channel for control lines (hydraulic/electric) which are secured by retainer (5). The housing (8) contains and protects control modules (7), annular fluid module (4), fittings for inlet (1) pass through outlet (2). The housing (8) acts as a centralizer for tubing in casing. The annular fluid module with filter (4) allows fluid in annulus to be displaced (and filtered) up the control line to the surface and can have a burst disk (or pressure activated valve) to prevent undesired annulus to control line communication. The control module (7) controls fluid/pressure to down-hole tools.

Multiple control module designs enable the DHMCM to be configured for a variety of applications. Modules with rupture disks are used for one-time pressure activation and two-way communication after the rupture disk bursts. Modules are configured to have normally-open valves. An internal hydrostatic chamber forces the valve closed once a

Down-Hole Multi-Control Manifold



Page 02...