Classifications

• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
  • E21B21/06—Arrangements for treating drilling fluids outside the borehole
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B34/00—Valve arrangements for boreholes or wells
  • E21B34/06—Valve arrangements for boreholes or wells in wells
  • E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
  • E21B21/10—Valve arrangements in drilling-fluid circulation systems

Definitions

• Hydraulic systems employ pressurized fluids to do work usually
• Circuits of conduits such as pipes, ports, tubes and hoses, for example, are positioned and configured to transport pressurized fluid to the desired locations.
• Applications in industries such as carbon dioxide
• the system includes a
• chemical injection line and a plurality of tools in operable communication with the chemical injection line that are independently responsive to changes in pressure or flow through the chemical injection line and that are configured to control flow of wellbore fluids.
• a hydraulic system that includes a chemical injection line and a plurality of tools in operable communication with the chemical injection line each of the plurality of tools are configured to be independently actuated by pressure supplied thereto through the chemical injection line to control the flow of wellbore fluids.
• the method includes, altering pressure in a chemical injection line, actuating at least one first of a plurality of tools in response to detecting a first selected pressure change profile in the chemical injection line, altering flow of wellbore fluids. Additionally, altering pressure in the chemical injection line further, actuating at least one second of the plurality of tools in response to detecting a second selected pressure change profile in the chemical injection line wherein whether or not chemical is injecting via the chemical injection line is not changed by the foregoing alterations in pressure in the chemical injection line, and altering flow of additional wellbore fluids.
• FIG. 1 depicts a partial schematic of an embodiment of a hydraulic system disclosed herein;
• FIG. 2 depicts a schematic of a portion of a tool employed in the hydraulic system of FIG. l ;
• FIG. 3 depicts a schematic of a portion of a tool employed in an alternate embodiment of the hydraulic system of FIG. 1.
• the hydraulic system 10 includes a chemical injection line 14 fluidically connected to a plurality of tools 18 A, 18B, with two of the tools 18 A, 18B being illustrated in the Figure, although any practical number of the tools 18A, 18B could be employed in the hydraulic system 10.
• the tools 18A, 18B are configured to be actuated in response to changes in pressure or flow through the chemical injection line 14 and are configured to control flow of wellbore fluids, for example via actuation of a valve 20.
• the valve 20 can be an interval control valve, a safety valve, a barrier valve, or other valve for controlling flow of wellbore fluids, for example.
• Wellbore fluids include liquid fluids such as water,
• hydrocarbons and gases such as natural gas and carbon dioxide, for example that are retrievable from or pumpable into an earth formation.
• each of the tools 18 A, 18B is actuated by a different pressure level within the chemical injection line 14.
• the tool 18A actuates at a first pressure while the tool 18B actuates at a second pressure.
• the tool 18A can be actuated independently of the tool 18B and all of the other tools 18X not shown. This includes actuating each of the tools 18A, 18B in any desired order regardless of their relative positions to one another.
• the tools 18 A, 18B can be actuated without altering whether or not chemical in the chemical injection line 14 is being injected.
• the tools 18A, 18B are actuated while the chemical injection valve 22 remains closed.
• the pressure in the chemical line 14 is employed to do work without treating the wellbore and/or wellbore fluids in proximate the tools 18A, 18B.
• the tools 18A, 18B can be actuated after chemical injection has begun by increasing flow through the chemical injection line 14 resulting in increasing of pressure in the line 14 until the first and second pressures are attained thereby actuating the tools 18 A, 18B.
• one or more of the tools 18A, 18B is configured to have continuous actuational control thereof maintained through the chemical injection line 14.
• actuation of the one or more tools 18A, 18B is substantially reversible in response to a decrease in pressure in the chemical injection line 14.
• the chemical injection line 14 is utilized as a closed loop hydraulic control circuit proximate the tool.
• the tools 18A, 18B include a first chamber 26 separated from a second chamber 28 by a piston 32 that is sealably engaged with walls 36 of the chambers 26, 28. Pressure from the chemical injection line 14 is supplied to the chamber 26 (assuming that optional control valve 82 discussed below is not present) while the chamber 28 is filled with a compressible fluid 40, such as air for example. Attached to the piston 32 is a rod 44 that is actuatably connected to a portion of the tools 18A, 18B. An operator, through sizing and pre-pressurizing the chamber 28 can selectively set the value of the first pressure at which the tools 18 A, 18B actuate. In this embodiment the motive force for moving the piston 32 is provided by the pressurized fluid in the chemical injection line 14.
• a pin 48 extending from a wall 52 of the first chamber 26 can be functionally engaged in a J-slot 56 of the piston 32 to prevent actuation of the tools 18A, 18B until a pressure in the chemical injection line 14 has been increased above a selected pressure for a selected period of time followed by a drop below a selected pressure for a selected period of time and repeated to advance the pin 48 within the J-slot 56.
• an embodiment of the tools 18A, 18B is configured to be actuated only after a pressure profile defined as a selected series of pressure pulses in the chemical injection line 14 has been carried out. It should be pointed out that, as discussed above, the changes in pressure could be in response to changes in flow of fluid through a restriction (not shown) within the chemical injection line 14 for systems wherein chemical is allowed to flow prior to actuation of the tools 18 A, 18B.
• FIG. 3 An alternate embodiment of a portion of the tools 18 A, 18B is illustrated in detail in Figure 3.
• the rod 44 as shown in Figure 2 instead of connecting to valve 20 directly, instead connects to a sleeve 58 slidably sealingly engaged with walls 62 of a chamber 66.
• the walls 62 have windows 70 that fluidically connect the inside of the chamber 66 with the outside of the chamber 66 when not occluded by the sleeve 58.
• An opening 74 in the sleeve 58 allows fluid to flow longitudinally through the sleeve 58.
• pressure outside of the chamber 66 may be hydrostatic pressure that is based on the distance that the tools 18 A, 18B are below surface.
• the tools 18A, 18B of this embodiment include an optional control valve 82 that selectively fluidically connects the chemical injection line 14 with the first chamber 26.
• the control valve 82 is operated via means other than pressure or fluid flow through the chemical injection line 14.
• a control line 86 connected to the control valve 82, controls operation of the control valve 82.
• the control line 86 can be an electric wire, a fiber optic cable or other line configured to communicate a signal to the control valve 82 from a remote location such as from surface in an application wherein the tools are in a borehole of an earth formation, for example.
• pressure in the chemical injection line 14 is maintained above a pressure that is needed to move the piston 32 to actuate the tools 18 A, 18B.
• Actuation of the tools 18 A, 18B is controlled via signals supplied to the control valve 82 through the control line 86.
• the control valve 82 can for example include an electro-mechanical device such as a solenoid (not shown) configured to open the control valve 82 when a selected signal is received at the control valve 82 via the control line 86.

Landscapes

• Engineering & Computer Science (AREA)
• Geology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Mining & Mineral Resources (AREA)
• Physics & Mathematics (AREA)
• Environmental & Geological Engineering (AREA)
• Fluid Mechanics (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Mechanical Engineering (AREA)
• Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
• Fluid-Pressure Circuits (AREA)
• Transplanting Machines (AREA)
• Stored Programmes (AREA)

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Publications (1)

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Family Applications (1)

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• 2013
  • 2013-06-27 US US13/929,298 patent/US9388664B2/en active Active
• 2014
  • 2014-05-22 NO NO20151632A patent/NO346804B1/en unknown
  • 2014-05-22 GB GB1600551.4A patent/GB2534292B/en active Active
  • 2014-05-22 BR BR112015030979-8A patent/BR112015030979B1/pt active IP Right Grant
  • 2014-05-22 WO PCT/US2014/039071 patent/WO2014209521A1/en not_active Ceased
  • 2014-05-22 AU AU2014303138A patent/AU2014303138B2/en active Active
• 2022
  • 2022-10-13 NO NO20221102A patent/NO20221102A1/en unknown

Patent Citations (5)

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