US20100301242A1 - Valve assembly - Google Patents
Valve assembly Download PDFInfo
- Publication number
- US20100301242A1 US20100301242A1 US12/739,063 US73906308A US2010301242A1 US 20100301242 A1 US20100301242 A1 US 20100301242A1 US 73906308 A US73906308 A US 73906308A US 2010301242 A1 US2010301242 A1 US 2010301242A1
- Authority
- US
- United States
- Prior art keywords
- valve assembly
- sealing
- sealing member
- configuration
- throughbore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000007789 sealing Methods 0.000 claims abstract description 183
- 239000012530 fluid Substances 0.000 claims description 34
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 3
- 230000005674 electromagnetic induction Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000007727 signaling mechanism Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86389—Programmer or timer
Definitions
- the present invention relates to a valve assembly.
- the invention relates to a flapper valve assembly.
- Flapper valves are widely used in fluid conduits that transfer fluids between an oil or gas reservoir and a wellhead. Flapper valves are typically hinged at one side of the conduit and pivotable in an arc 90° about the hinge to move between an open and a closed configuration. In the open configuration, the valve is disposed generally parallel to the longitudinal axis of the throughbore of the conduit and is therefore removed from the throughbore to allow fluids to flow therethrough. In the closed configuration, the valve lies perpendicular to the longitudinal axis of the throughbore to obturate the bore of the conduit.
- conventional flapper valves have the disadvantage that they are unidirectional i.e. they only seal and hold pressure in one direction.
- a valve assembly comprising:
- conduit having a throughbore and defining a longitudinal axis
- sealing member that is moveable between an open configuration in which the throughbore of the conduit is open and a sealing configuration in which the sealing member is arranged to substantially obturate the throughbore of the conduit;
- the sealing member seals the throughbore along a sealing line at least a part of which is angled relative to a direction perpendicular to the longitudinal axis of the throughbore.
- the shape of the sealing line can be non-planar.
- a valve assembly comprising:
- a sealing member that is both pivotally and axially moveable between an open configuration in which the throughbore of the conduit is open and a sealing configuration in which the sealing member is arranged to substantially obturate the throughbore of the conduit.
- the sealing member can seal the throughbore along a sealing line at least a part of which is angled relative to a direction perpendicular to a longitudinal axis of the throughbore.
- the sealing member is non-circular in plan and preferably is longer than it is wider.
- the sealing member can be non-planar. More preferably, the sealing member can be arcuate. At least one face of the sealing member can be curved around the longitudinal axis of the throughbore and more preferably a central axis of the sealing member is arranged to be parallel to the longitudinal axis of the throughbore, when in the open configuration.
- the curve of the at least one face of the sealing member around the longitudinal axis can have a substantially constant radius.
- a sealing member having such a shape can take up less space and thus improve space efficiency of the apparatus when the sealing member is in the open configuration.
- the sealing member can have a convex face and the sealing line can be arranged along the convex face of the sealing member.
- the sealing member can be substantially spade, teardrop or egg-shaped in plan view.
- An outer edge of the sealing member can be shaped to conform to an inner surface of the conduit.
- a valve assembly comprising:
- sealing member for selectively opening and sealing the throughbore, wherein the sealing member is substantially spade shaped in plan.
- the sealing member can be movable between an open configuration and a sealing configuration.
- the throughbore In the open configuration, the throughbore is open allowing passage of fluids therethrough. In the sealing configuration, the sealing member substantially obturates the throughbore to restrict passage of fluids therethrough.
- valve assembly can retain pressure across the seal in one direction. More preferably, the valve assembly can retain pressure across the seal in both directions.
- the sealing member preferably seals the throughbore along a sealing line that is angled relative to a direction perpendicular to an axis of the throughbore.
- the sealing line can be arranged along an upstream face of the sealing member.
- the sealing member preferably forms part of a sealing mechanism selectively actuable to move the sealing member between the open configuration and the sealing configuration.
- the sealing member can be pivotally coupled to the sealing mechanism and more preferably can be pivotally movable within the bore.
- the sealing member can be pivotable through less than 90° of rotation to move between the open configuration and the sealing configuration. More preferably, the sealing member is pivotable through less than 70° of rotation to move between the open configuration and the sealing configuration. More preferably, pivotal movement of the sealing member of less than 50° and most preferably around 45° allows the sealing member to move between the open and the sealing configuration.
- the sealing mechanism can also be actuable to cause axial movement of the sealing member.
- Movement of the sealing member between the open configuration and the sealing configuration is preferably actuated by both axial and pivotal movement of the sealing member.
- the sealing member can comprise pivotally attached first and second portions.
- the first portion can be movable only in an axial direction.
- the second portion can be movable axially due to its attachment to the first portion as well as pivotally through pivot of the second portion relative to the first portion.
- the sealing mechanism can be hydraulically actuable and is preferably coupled to a hydraulic actuation system.
- a valve seat can be provided in the throughbore of the conduit.
- the valve seat can be arranged such that the sealing member seals against the valve seat in the sealing configuration.
- the valve seat can be shaped to conform with the profile of the sealing member along the sealing line.
- the sealing line is preferably the line along which the valve seat and the sealing member are in contact when in the sealing configuration.
- the sealing line can be the line along which a seal is made between an inner surface of the conduit and the sealing member.
- the valve seat can be moveable between a stowed configuration and a spaced configuration.
- the sealing member engages the valve seat when the sealing member is in the sealing configuration.
- the spaced configuration the sealing member is spaced from and movable relative to the valve seat.
- the valve assembly can further comprise a second valve seat for selective sealing against the sealing member.
- At least one of the first and second valve seats can move relative to the sealing member.
- the sealing member can typically seal against at least one of the valve seats in the sealing configuration.
- the sealing member can seal against both of the valve seats in the sealing configuration.
- the second valve seat can be shaped to guide the sealing member towards the sealing configuration.
- the second valve seat is preferably shaped to conform with the profile of the sealing member along the sealing line.
- the first valve seat can be axially moveable within the bore.
- the first valve seat can be mounted on an end face of a sleeve that is slideable within the bore of the conduit.
- the sleeve is preferably hydraulically operable.
- the sleeve can be hydraulically coupled to the hydraulic actuation system also used to open the sealing mechanism.
- the hydraulic system of the valve assembly can be actuable by at least one of the following means selected from the group consisting of: a timer; radio frequency signals; a pressure pulse; and electromagnetic induction.
- Alternative methods of actuation of the sealing mechanism include applied pressure using control lines and mechanically driven means, such as different types of motor.
- the valve assembly is preferably resettable in that it is preferably repeatably moveable between the open and sealing configurations.
- the valve assembly can comprise a reset system, the actuation of which can cause movement of the valve assembly from the sealing configuration to the open configuration.
- the reset system can be responsive to at least one of the following means selected from the group consisting of: a timer; a radio frequency signal: a pressure pulse; a mechanical driving means; and electromagnetic induction, for selective movement of the valve assembly into a predetermined configuration.
- the valve assembly can be a flapper valve assembly.
- the sealing member of the valve assembly can be a flapper.
- a flapper valve assembly comprising:
- flapper valve is pivotable through less than 90° to seal the throughbore.
- a self-cleaning flapper valve assembly According to a fifth aspect of the invention there is provided a self-cleaning flapper valve assembly.
- the self-cleaning flapper valve assembly can comprise: a flapper valve selectively moveable between an open configuration and a sealing configuration; and at least one valve seat against which the flapper valve can seal to substantially seal the throughbore.
- the flapper valve and the at least one valve seat can be shaped such that movement of the sealing member from the open into the sealing configuration cleans the valve seat.
- the self-cleaning action can be achieved by contact between the sealing member and the valve seat as the sealing member is moved into the sealing configuration, since the moving contact between the sealing member and the valve seat can scrape debris from the valve seat.
- FIGS. 1 a and 1 b are, respectively, a partial cutaway plan view and a sectional view of a valve assembly in its open configuration
- FIG. 1 c is an end view of the valve assembly of FIG. 1 a;
- FIGS. 2 a and 2 b are, respectively, a partial cutaway plan view and a sectional view of the valve assembly of FIGS. 1 a and 1 b showing the sealing member exposed in its open configuration;
- FIGS. 3 a and 3 b are, respectively, a partial cutaway plan view and a sectional view of the valve assembly of FIGS. 1 a and 1 b but showing the sealing member substantially obturating the throughbore;
- FIGS. 4 a and 4 b are, respectively, a partial cutaway plan view and a sectional view of the assembly of FIGS. 3 a and 3 b in its sealing configuration;
- FIG. 4 c is an end view of the valve assembly of FIG. 4 a.
- the valve assembly is shown generally at 10 in the figures and comprises a substantially tubular body having an upper sub 12 , a middle sub 14 and a lower sub 16 .
- the subs 12 , 14 , 16 are connected together by means of conventional threaded pin and box connections and are sealed by O-rings.
- the subs 12 , 14 and 16 define a central longitudinal axis 18 and a throughbore 19 that acts as a conduit for the flow of fluids through the tubular body.
- Outer ends of the top sub 12 and the bottom sub 16 have respective end box and pin connections in order to connect the valve assembly 10 to adjacent lengths of tubing to make up the valve assembly 10 as part of a tubing string.
- the valve assembly 10 can be incorporated into a production tubing string and run into a downhole wellbore for the recovery of hydrocarbons from hydrocarbon reservoirs.
- the middle sub 14 accommodates two flow tubes.
- An upper flow tube 13 is provided adjacent the top sub 12 so that an inner surface of the top sub 12 and an inner surface of the upper flow tube 13 are substantially contiguous in that they share the same internal diameter.
- the middle sub 14 also carries a middle flow tube 40 that is dimensioned to be a close sliding fit thereagainst.
- the middle flow tube 40 has a debris barrier 47 in the form of a TeflonTM ring to restrict debris collection in an annulus between the middle sub 14 and an outer part of the middle flow tube 40 .
- the longitudinal axis 18 of the throughbore 19 is offset relative to a central longitudinal axis of the middle sub 14 as can be seen in FIG. 1 c , such that one side of each of the flow tubes 13 , 40 , abuts the inner surface of the middle sub 14 .
- the flow tubes 13 , 40 On the opposing side, the flow tubes 13 , 40 have a thicker sidewall to accommodate a hydraulic sealing mechanism shown generally at 80 .
- the end view of FIG. 1 c shows that the outer housing of the subs 12 , 14 , 16 extends radially outwardly relative to the throughbore 19 to a greater extent on one side of the valve assembly 10 than the other. This creates an arcuate pocket 15 in which the hydraulic sealing mechanism 80 is accommodated and in which a sealing member in the form of a flapper valve 20 is housed when in the open configuration.
- the sealing mechanism 80 comprises a first piston chamber 45 that lies parallel to the longitudinal axis 18 and is in fluid communication, via a port 46 , with a hydraulic line 17 running through a side wall of a top sub 12 .
- the hydraulic line 17 connects the hydraulic sealing mechanism 80 to an external supply of hydraulic fluid.
- One end of a piston 42 is sealed within the chamber 45 and the other end of the piston 42 is attached to a protrusion 41 extending radially outwardly from one side of the middle flow tube 40 .
- a second piston 48 is attached to the opposing side of the protrusion 41 so that the pistons 42 , 48 and the middle flow tube 40 are rigidly connected and moveable as one unit.
- the second piston 48 is sealed in a second chamber 43 that is in fluid communication with a hydraulic fluid line 44 that also leads to an external supply of hydraulic fluid.
- a hydraulic actuation system (not shown) produces two controlled outputs, one of which is arranged to supply the fluid line 17 and the other is arranged to supply the fluid line 44 .
- Signalling mechanisms can be used to actuate the hydraulic system. These signalling mechanisms can include RFID tags (such as disclosed in UK Patent No GB2420133) to initiate pre-programmed activities, or hydraulic control lines that extend from surface. Pressure pulses in the bore could also be used to actuate the hydraulic system.
- a third piston 22 is sealed within a third chamber 23 arranged substantially parallel to the second chamber 43 .
- the second piston chamber 43 has a hydraulic connecting line 26 allowing selective fluid communication between the second piston chamber 43 and the third chamber 23 , but only when the second piston 48 uncovers the hydraulic connecting line 26 .
- the third piston 22 is rigidly attached to a collar 28 that carries the flapper valve 20 .
- the flapper valve 20 is intended for operation in the circular cross-section throughbore 19 , the flapper valve 20 itself is not circular in plan view but rather is longer than it is wider.
- the flapper valve 20 in a plan view ( FIG. 1 a ) is substantially spade, egg- or teardrop shaped.
- the flapper valve 20 as shown in FIG.
- the flapper valve 20 is pivotally coupled to the collar 28 via a hinge 21 acting as a pivot point. Therefore, the flapper valve 20 is moveable both axially by the movement of the piston 22 attached to the collar 28 and pivotally via the hinge 21 .
- the bottom sub 16 has a lower flow tube 60 positioned adjacent thereto such that an inner surface of the bottom sub 16 is contiguous within an inner surface of the lower flow tube 60 .
- the lower flow tube 60 has a shaped sealing seat 61 that is arranged to guide the flapper valve 20 into a sealing configuration, on axial movement of the collar 28 , and allow the flapper valve 20 to seal thereagainst.
- the sealing seat 61 of the lower flow tube 60 is shaped to match and seal against a rear face of the flapper valve 20 .
- the outer diameter of the middle flow tube 40 is a sliding fit within the middle sub 14 and the middle flow tube 40 is slideable between the end of the upper flow tube 13 and the flapper valve 20 in the throughbore 19 in a sealing configuration or the sealing seat 61 of the lower flow tube 60 in an open configuration.
- a contact edge 49 ( FIG. 3 a ) of the middle flow tube 40 is shaped to match and abut a leading edge of the flapper valve 20 .
- the flapper valve 20 is movable between an open configuration in which the throughbore 19 of the valve assembly 10 is open (shown in FIGS. 1 a - c ) and a sealing configuration in which the throughbore 19 of the valve assembly 10 is closed and fluid passage therethrough is restricted (shown in FIGS. 4 a - c ).
- the ends of the valve assembly 10 Prior to use of the valve assembly 10 , the ends of the valve assembly 10 are connected to lengths of pipe in a tubing string that is run downhole.
- the valve assembly 10 is run downhole with the flapper valve 20 in the open configuration as shown in FIGS. 1 a - c .
- the flapper valve 20 is accommodated within the arcuate pocket 15 and retained in this configuration by the middle flow tube 40 that prevents the flapper valve 20 from pivoting into the throughbore 19 .
- the contact face 49 of the middle flow tube 40 abuts the sealing seat 61 of the lower flow tube 60 in order that the throughbore 19 of the valve assembly 10 remains open and fluids can flow therethrough.
- the flapper valve 20 of the valve assembly 10 can be used to seal or block the throughbore 19 and thereby provide a pressure retaining barrier to conduct these operations.
- an operator sends a command to the hydraulic system, which supplies fluid through the hydraulic line 44 that is in fluid communication with the second chamber 43 .
- the second piston 48 is moved axially in a direction away from the flapper valve 20 . Since the second piston 48 is rigidly connected to the middle flow tube 40 and the first piston 42 via the collar 41 , the middle flow tube 40 and first piston 42 are also moved towards the top sub 12 .
- the second piston 42 contacts a switch (not shown) positioned adjacent the port 46 .
- the switch sends a command to the hydraulic system to return the middle flow tube 40 to its original position.
- the hydraulic system then supplies fluid via the hydraulic line 12 and through the port 46 into the first chamber 45 .
- the hydraulic fluid urges the first piston 42 towards the flapper valve 20 .
- This causes movement of protrusion 41 and hence the second piston 48 and the middle flow tube 40 towards flapper valve 20 .
- Movement of the second piston forces fluid from the second piston chamber 43 and into the line 44 which returns the fluid to the hydraulic fluid system.
- Axial movement of the middle flow tube 40 continues until the contact edge 49 abuts the leading face of the flapper valve 20 .
- the throughbore 19 is now obturated by the presence of the flapper valve 20 .
- the valve seat in the form of the sealing seat, 61 and the contact edge 49 arranged to abut the flapper valve 20 ensures that the flapper valve 20 is positively held in this position and is thus prevented from moving any further past 45° or from being unintentionally retracted.
- the flapper valve 20 can thus retain pressure in both directions.
- the flapper valve 20 and middle flow tube 40 can be resettable downhole.
- the valve assembly 10 can be programmed to cause selective movement of the flapper valve 20 and middle flow tube 40 to a predetermined reset configuration.
- the barrier can be removed to permit two-way flow once the testing or packer setting operations have been completed. This can be achieved by actuation of the hydraulic system in reverse to perform the steps of withdrawing the middle flow tube 40 and subsequently returning the flapper valve 20 in the direction of the top sub 12 , followed by moving the middle flow tube 40 to its original position against the sealing seat 61 of the lower flow tube 60 .
- the first piston 42 is uncovered when the contact face 49 of the middle flow tube 40 abuts the sealing seat 61 of the lower flow tube 60 .
- a thin walled flow tube could be provided to bridge this gap and substantially restrict debris from collecting in the region of the first piston 42 .
- Embodiments of the present invention can seal the throughbore 19 without requiring the flapper valve 20 to be rotated all the way through 90° and can seal the throughbore by being rotated substantially less than 90° which affords such a flapper valve 20 with the advantage that the flapper valve 20 can be more easily moved from the sealing configuration to the open configuration because it is less likely to be jammed by debris resting on it from above.
- the leading face of the flapper valve 20 could alternatively or additionally seal against the contact face 49 of the middle flow tube 40 .
- the seals between the flapper valve 20 and the flow tubes 40 , 60 can be carried on the sealing seat 61 or contact edge 49 of the flow tubes 40 , 60 or on the flapper valve 20 .
- the seals can be provided by metal-to-metal contact between the sealing seat 61 and the flapper valve 20 or rubber seals can be provided in the region of contact between the flapper valve 20 and the sealing seat 61 .
- the sealing line can be planar and the sealing member can be elliptical in shape and arranged to make a planar seal along the sealing line, although the flapper valve 20 shown in FIGS. 1 to 4 is the preferred shape because the arcuate flapper valve 20 is more space efficient.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Valve Device For Special Equipments (AREA)
- Polarising Elements (AREA)
- Massaging Devices (AREA)
- Details Of Valves (AREA)
- Multiple-Way Valves (AREA)
- Valve Housings (AREA)
Abstract
Description
- The present invention relates to a valve assembly. In particular, though not exclusively, the invention relates to a flapper valve assembly.
- Flapper valves are widely used in fluid conduits that transfer fluids between an oil or gas reservoir and a wellhead. Flapper valves are typically hinged at one side of the conduit and pivotable in an arc 90° about the hinge to move between an open and a closed configuration. In the open configuration, the valve is disposed generally parallel to the longitudinal axis of the throughbore of the conduit and is therefore removed from the throughbore to allow fluids to flow therethrough. In the closed configuration, the valve lies perpendicular to the longitudinal axis of the throughbore to obturate the bore of the conduit. However, conventional flapper valves have the disadvantage that they are unidirectional i.e. they only seal and hold pressure in one direction.
- According to a first aspect of the present invention there is provided a valve assembly comprising:
- a conduit having a throughbore and defining a longitudinal axis;
- a sealing member that is moveable between an open configuration in which the throughbore of the conduit is open and a sealing configuration in which the sealing member is arranged to substantially obturate the throughbore of the conduit;
- wherein in the sealing configuration, the sealing member seals the throughbore along a sealing line at least a part of which is angled relative to a direction perpendicular to the longitudinal axis of the throughbore.
- The shape of the sealing line can be non-planar.
- According to a second aspect of the invention, there is provided a valve assembly comprising:
- a conduit with a throughbore for the passage of fluid therethrough; and
- a sealing member that is both pivotally and axially moveable between an open configuration in which the throughbore of the conduit is open and a sealing configuration in which the sealing member is arranged to substantially obturate the throughbore of the conduit.
- According to the second aspect of the invention, the sealing member can seal the throughbore along a sealing line at least a part of which is angled relative to a direction perpendicular to a longitudinal axis of the throughbore.
- Preferably, the sealing member is non-circular in plan and preferably is longer than it is wider. The sealing member can be non-planar. More preferably, the sealing member can be arcuate. At least one face of the sealing member can be curved around the longitudinal axis of the throughbore and more preferably a central axis of the sealing member is arranged to be parallel to the longitudinal axis of the throughbore, when in the open configuration. The curve of the at least one face of the sealing member around the longitudinal axis can have a substantially constant radius. A sealing member having such a shape can take up less space and thus improve space efficiency of the apparatus when the sealing member is in the open configuration.
- The sealing member can have a convex face and the sealing line can be arranged along the convex face of the sealing member.
- The sealing member can be substantially spade, teardrop or egg-shaped in plan view.
- An outer edge of the sealing member can be shaped to conform to an inner surface of the conduit.
- According to a third aspect of the present invention, there is provided a valve assembly comprising:
- a conduit with a throughbore for the passage of fluid therethrough; and
- a sealing member for selectively opening and sealing the throughbore, wherein the sealing member is substantially spade shaped in plan.
- According to the third aspect of the invention, the sealing member can be movable between an open configuration and a sealing configuration.
- In the open configuration, the throughbore is open allowing passage of fluids therethrough. In the sealing configuration, the sealing member substantially obturates the throughbore to restrict passage of fluids therethrough.
- In the sealing configuration, the valve assembly can retain pressure across the seal in one direction. More preferably, the valve assembly can retain pressure across the seal in both directions.
- The sealing member preferably seals the throughbore along a sealing line that is angled relative to a direction perpendicular to an axis of the throughbore.
- Typically fluids predominantly flow through the conduit in one direction. The sealing line can be arranged along an upstream face of the sealing member.
- According to any aspect of the invention, the sealing member preferably forms part of a sealing mechanism selectively actuable to move the sealing member between the open configuration and the sealing configuration.
- The sealing member can be pivotally coupled to the sealing mechanism and more preferably can be pivotally movable within the bore.
- The sealing member can be pivotable through less than 90° of rotation to move between the open configuration and the sealing configuration. More preferably, the sealing member is pivotable through less than 70° of rotation to move between the open configuration and the sealing configuration. More preferably, pivotal movement of the sealing member of less than 50° and most preferably around 45° allows the sealing member to move between the open and the sealing configuration.
- The sealing mechanism can also be actuable to cause axial movement of the sealing member.
- Movement of the sealing member between the open configuration and the sealing configuration is preferably actuated by both axial and pivotal movement of the sealing member.
- The sealing member can comprise pivotally attached first and second portions. The first portion can be movable only in an axial direction. The second portion can be movable axially due to its attachment to the first portion as well as pivotally through pivot of the second portion relative to the first portion.
- The sealing mechanism can be hydraulically actuable and is preferably coupled to a hydraulic actuation system.
- A valve seat can be provided in the throughbore of the conduit. The valve seat can be arranged such that the sealing member seals against the valve seat in the sealing configuration.
- The valve seat can be shaped to conform with the profile of the sealing member along the sealing line. The sealing line is preferably the line along which the valve seat and the sealing member are in contact when in the sealing configuration.
- Alternatively, the sealing line can be the line along which a seal is made between an inner surface of the conduit and the sealing member.
- The valve seat can be moveable between a stowed configuration and a spaced configuration. In the stowed configuration, the sealing member engages the valve seat when the sealing member is in the sealing configuration. In the spaced configuration, the sealing member is spaced from and movable relative to the valve seat.
- The valve assembly can further comprise a second valve seat for selective sealing against the sealing member.
- At least one of the first and second valve seats can move relative to the sealing member. The sealing member can typically seal against at least one of the valve seats in the sealing configuration. The sealing member can seal against both of the valve seats in the sealing configuration.
- The second valve seat can be shaped to guide the sealing member towards the sealing configuration. The second valve seat is preferably shaped to conform with the profile of the sealing member along the sealing line.
- The first valve seat can be axially moveable within the bore.
- The first valve seat can be mounted on an end face of a sleeve that is slideable within the bore of the conduit.
- The sleeve is preferably hydraulically operable. The sleeve can be hydraulically coupled to the hydraulic actuation system also used to open the sealing mechanism.
- The hydraulic system of the valve assembly can be actuable by at least one of the following means selected from the group consisting of: a timer; radio frequency signals; a pressure pulse; and electromagnetic induction.
- Alternative methods of actuation of the sealing mechanism include applied pressure using control lines and mechanically driven means, such as different types of motor.
- The valve assembly is preferably resettable in that it is preferably repeatably moveable between the open and sealing configurations. The valve assembly can comprise a reset system, the actuation of which can cause movement of the valve assembly from the sealing configuration to the open configuration.
- Where the valve assembly incorporates a reset system, the reset system can be responsive to at least one of the following means selected from the group consisting of: a timer; a radio frequency signal: a pressure pulse; a mechanical driving means; and electromagnetic induction, for selective movement of the valve assembly into a predetermined configuration.
- The valve assembly can be a flapper valve assembly. The sealing member of the valve assembly can be a flapper.
- According to a fourth aspect of the invention, there is provided a flapper valve assembly comprising:
- a conduit having a throughbore and a flapper valve; and
- wherein the flapper valve is pivotable through less than 90° to seal the throughbore.
- According to a fifth aspect of the invention there is provided a self-cleaning flapper valve assembly.
- The self-cleaning flapper valve assembly can comprise: a flapper valve selectively moveable between an open configuration and a sealing configuration; and at least one valve seat against which the flapper valve can seal to substantially seal the throughbore. The flapper valve and the at least one valve seat can be shaped such that movement of the sealing member from the open into the sealing configuration cleans the valve seat.
- The self-cleaning action can be achieved by contact between the sealing member and the valve seat as the sealing member is moved into the sealing configuration, since the moving contact between the sealing member and the valve seat can scrape debris from the valve seat.
- Optional and essential features of the first, second and third aspects of the invention can also be incorporated with features of the fourth and fifth aspects of the invention where appropriate.
- Embodiments of the present invention will now be described, by way of example only, and with reference to the accompanying drawings, in which:—
-
FIGS. 1 a and 1 b are, respectively, a partial cutaway plan view and a sectional view of a valve assembly in its open configuration; -
FIG. 1 c is an end view of the valve assembly ofFIG. 1 a; -
FIGS. 2 a and 2 b are, respectively, a partial cutaway plan view and a sectional view of the valve assembly ofFIGS. 1 a and 1 b showing the sealing member exposed in its open configuration; -
FIGS. 3 a and 3 b are, respectively, a partial cutaway plan view and a sectional view of the valve assembly ofFIGS. 1 a and 1 b but showing the sealing member substantially obturating the throughbore; -
FIGS. 4 a and 4 b are, respectively, a partial cutaway plan view and a sectional view of the assembly ofFIGS. 3 a and 3 b in its sealing configuration; and -
FIG. 4 c is an end view of the valve assembly ofFIG. 4 a. - The valve assembly is shown generally at 10 in the figures and comprises a substantially tubular body having an
upper sub 12, amiddle sub 14 and alower sub 16. Thesubs subs longitudinal axis 18 and athroughbore 19 that acts as a conduit for the flow of fluids through the tubular body. Outer ends of thetop sub 12 and thebottom sub 16 have respective end box and pin connections in order to connect thevalve assembly 10 to adjacent lengths of tubing to make up thevalve assembly 10 as part of a tubing string. In this way, thevalve assembly 10 can be incorporated into a production tubing string and run into a downhole wellbore for the recovery of hydrocarbons from hydrocarbon reservoirs. - The
middle sub 14 accommodates two flow tubes. Anupper flow tube 13 is provided adjacent thetop sub 12 so that an inner surface of thetop sub 12 and an inner surface of theupper flow tube 13 are substantially contiguous in that they share the same internal diameter. Themiddle sub 14 also carries amiddle flow tube 40 that is dimensioned to be a close sliding fit thereagainst. Themiddle flow tube 40 has adebris barrier 47 in the form of a Teflon™ ring to restrict debris collection in an annulus between themiddle sub 14 and an outer part of themiddle flow tube 40. - The
longitudinal axis 18 of thethroughbore 19 is offset relative to a central longitudinal axis of themiddle sub 14 as can be seen inFIG. 1 c, such that one side of each of theflow tubes middle sub 14. On the opposing side, theflow tubes FIG. 1 c shows that the outer housing of thesubs throughbore 19 to a greater extent on one side of thevalve assembly 10 than the other. This creates anarcuate pocket 15 in which thehydraulic sealing mechanism 80 is accommodated and in which a sealing member in the form of aflapper valve 20 is housed when in the open configuration. - The
sealing mechanism 80 comprises afirst piston chamber 45 that lies parallel to thelongitudinal axis 18 and is in fluid communication, via aport 46, with ahydraulic line 17 running through a side wall of atop sub 12. Thehydraulic line 17 connects thehydraulic sealing mechanism 80 to an external supply of hydraulic fluid. One end of apiston 42 is sealed within thechamber 45 and the other end of thepiston 42 is attached to aprotrusion 41 extending radially outwardly from one side of themiddle flow tube 40. Asecond piston 48 is attached to the opposing side of theprotrusion 41 so that thepistons middle flow tube 40 are rigidly connected and moveable as one unit. Thesecond piston 48 is sealed in asecond chamber 43 that is in fluid communication with ahydraulic fluid line 44 that also leads to an external supply of hydraulic fluid. - A hydraulic actuation system (not shown) produces two controlled outputs, one of which is arranged to supply the
fluid line 17 and the other is arranged to supply thefluid line 44. Signalling mechanisms can be used to actuate the hydraulic system. These signalling mechanisms can include RFID tags (such as disclosed in UK Patent No GB2420133) to initiate pre-programmed activities, or hydraulic control lines that extend from surface. Pressure pulses in the bore could also be used to actuate the hydraulic system. - A
third piston 22 is sealed within athird chamber 23 arranged substantially parallel to thesecond chamber 43. Thesecond piston chamber 43 has a hydraulic connectingline 26 allowing selective fluid communication between thesecond piston chamber 43 and thethird chamber 23, but only when thesecond piston 48 uncovers the hydraulic connectingline 26. Thethird piston 22 is rigidly attached to acollar 28 that carries theflapper valve 20. As will be appreciated by those skilled in the art, although theflapper valve 20 is intended for operation in thecircular cross-section throughbore 19, theflapper valve 20 itself is not circular in plan view but rather is longer than it is wider. Moreover, theflapper valve 20 in a plan view (FIG. 1 a) is substantially spade, egg- or teardrop shaped. Theflapper valve 20 as shown inFIG. 2 b has a central axis along its length that is straight and parallel to the longitudinal axis of the throughbore when thevalve 20 is in the open configuration and has arcuate sides at each side of the central axis that curve to follow a similar radius of curvature as the lower end of themiddle flow tube 40. Theflapper valve 20 is pivotally coupled to thecollar 28 via ahinge 21 acting as a pivot point. Therefore, theflapper valve 20 is moveable both axially by the movement of thepiston 22 attached to thecollar 28 and pivotally via thehinge 21. - The
bottom sub 16 has alower flow tube 60 positioned adjacent thereto such that an inner surface of thebottom sub 16 is contiguous within an inner surface of thelower flow tube 60. Thelower flow tube 60 has a shaped sealingseat 61 that is arranged to guide theflapper valve 20 into a sealing configuration, on axial movement of thecollar 28, and allow theflapper valve 20 to seal thereagainst. The sealingseat 61 of thelower flow tube 60 is shaped to match and seal against a rear face of theflapper valve 20. - The outer diameter of the
middle flow tube 40 is a sliding fit within themiddle sub 14 and themiddle flow tube 40 is slideable between the end of theupper flow tube 13 and theflapper valve 20 in thethroughbore 19 in a sealing configuration or the sealingseat 61 of thelower flow tube 60 in an open configuration. A contact edge 49 (FIG. 3 a) of themiddle flow tube 40 is shaped to match and abut a leading edge of theflapper valve 20. - The
flapper valve 20 is movable between an open configuration in which thethroughbore 19 of thevalve assembly 10 is open (shown inFIGS. 1 a-c) and a sealing configuration in which thethroughbore 19 of thevalve assembly 10 is closed and fluid passage therethrough is restricted (shown inFIGS. 4 a-c). - Prior to use of the
valve assembly 10, the ends of thevalve assembly 10 are connected to lengths of pipe in a tubing string that is run downhole. Thevalve assembly 10 is run downhole with theflapper valve 20 in the open configuration as shown inFIGS. 1 a-c. Theflapper valve 20 is accommodated within thearcuate pocket 15 and retained in this configuration by themiddle flow tube 40 that prevents theflapper valve 20 from pivoting into thethroughbore 19. The contact face 49 of themiddle flow tube 40 abuts the sealingseat 61 of thelower flow tube 60 in order that thethroughbore 19 of thevalve assembly 10 remains open and fluids can flow therethrough. - It is often required to set a packer or to pressure test the tubing string prior to commencement of other operations. The
flapper valve 20 of thevalve assembly 10 can be used to seal or block thethroughbore 19 and thereby provide a pressure retaining barrier to conduct these operations. In such a requirement, an operator sends a command to the hydraulic system, which supplies fluid through thehydraulic line 44 that is in fluid communication with thesecond chamber 43. As fluid collects in thesecond chamber 43, thesecond piston 48 is moved axially in a direction away from theflapper valve 20. Since thesecond piston 48 is rigidly connected to themiddle flow tube 40 and thefirst piston 42 via thecollar 41, themiddle flow tube 40 andfirst piston 42 are also moved towards thetop sub 12. As thefirst piston 42 enters thefirst chamber 45, fluid is forced out of theport 46 and through thehydraulic fluid line 17, where it is returned to the hydraulic system. Axial movement of themiddle flow tube 40 continues until the upper end of themiddle flow tube 40 abuts the lower end of theupper flow tube 13 as shown inFIGS. 2 a and 2 b. - Once the
second piston 48 has moved beyond the connectingline 26 between thesecond chamber 43 and thethird chamber 23, the connectingline 26 is uncovered to allow fluid communication between thesecond chamber 23 and thethird chamber 43. As a result, hydraulic fluid enters thethird chamber 23. Fluid in thethird chamber 23 forces thethird piston 22 to move towards thebottom sub 16. Since thecollar 28 and theflapper valve 20 are connected to thethird piston 22, axial movement of thethird piston 22 causes a corresponding movement of thecollar 28 andflapper valve 20. The absence of themiddle flow tube 40 allows theflapper valve 20 to pivot about thehinge 21 through 45° into thethroughbore 19. Theflapper valve 20 is guided into position by the sealingseat 61 of thelower flow tube 60 as shown inFIGS. 3 a and 3 b. As theflapper valve 20 travels into the sealing configuration, thevalve 20 is pushed along the sealingseat 61 of theflow tube 60 thereby scraping debris from theseat 61. This self-cleaning action as theflapper valve 20 moves into position over the sealingseat 61 results in an improved seal between thevalve 20 and theseat 61. In the sealing configuration, a convex face of theflapper valve 20 makes a seal against the sealingseat 61. This seal is made against a side of theflapper valve 20 that is typically in the upstream position (in other words the convex face of theflapper valve 20 faces downwards or away from the surface of the well). The line along which the seal is made is inclined approximately at an angle of 45° relative to thelongitudinal axis 18 of the tubular. - Once the
second piston 42 has reached its full extent of travel, thesecond piston 42 contacts a switch (not shown) positioned adjacent theport 46. The switch sends a command to the hydraulic system to return themiddle flow tube 40 to its original position. The hydraulic system then supplies fluid via thehydraulic line 12 and through theport 46 into thefirst chamber 45. The hydraulic fluid urges thefirst piston 42 towards theflapper valve 20. This causes movement ofprotrusion 41 and hence thesecond piston 48 and themiddle flow tube 40 towardsflapper valve 20. Movement of the second piston forces fluid from thesecond piston chamber 43 and into theline 44 which returns the fluid to the hydraulic fluid system. Axial movement of themiddle flow tube 40 continues until thecontact edge 49 abuts the leading face of theflapper valve 20. - The
throughbore 19 is now obturated by the presence of theflapper valve 20. The valve seat in the form of the sealing seat, 61 and thecontact edge 49 arranged to abut theflapper valve 20 ensures that theflapper valve 20 is positively held in this position and is thus prevented from moving any further past 45° or from being unintentionally retracted. Theflapper valve 20 can thus retain pressure in both directions. - The
flapper valve 20 andmiddle flow tube 40 can be resettable downhole. Thevalve assembly 10 can be programmed to cause selective movement of theflapper valve 20 andmiddle flow tube 40 to a predetermined reset configuration. Thus, the barrier can be removed to permit two-way flow once the testing or packer setting operations have been completed. This can be achieved by actuation of the hydraulic system in reverse to perform the steps of withdrawing themiddle flow tube 40 and subsequently returning theflapper valve 20 in the direction of thetop sub 12, followed by moving themiddle flow tube 40 to its original position against the sealingseat 61 of thelower flow tube 60. - In the arrangement shown in
FIGS. 1 a-c and 4 a-c, thefirst piston 42 is uncovered when thecontact face 49 of themiddle flow tube 40 abuts the sealingseat 61 of thelower flow tube 60. According to an alternative embodiment, a thin walled flow tube could be provided to bridge this gap and substantially restrict debris from collecting in the region of thefirst piston 42. - Embodiments of the present invention can seal the
throughbore 19 without requiring theflapper valve 20 to be rotated all the way through 90° and can seal the throughbore by being rotated substantially less than 90° which affords such aflapper valve 20 with the advantage that theflapper valve 20 can be more easily moved from the sealing configuration to the open configuration because it is less likely to be jammed by debris resting on it from above. - Although the above embodiment describes that a seal is achieved by sealing the rear face of the
flapper valve 20 against the sealingseat 61, the leading face of theflapper valve 20 could alternatively or additionally seal against thecontact face 49 of themiddle flow tube 40. The seals between theflapper valve 20 and theflow tubes seat 61 orcontact edge 49 of theflow tubes flapper valve 20. The seals can be provided by metal-to-metal contact between the sealingseat 61 and theflapper valve 20 or rubber seals can be provided in the region of contact between theflapper valve 20 and the sealingseat 61. - Modifications and improvements can be incorporated without departing from the scope of the invention. For example, the sealing line can be planar and the sealing member can be elliptical in shape and arranged to make a planar seal along the sealing line, although the
flapper valve 20 shown inFIGS. 1 to 4 is the preferred shape because thearcuate flapper valve 20 is more space efficient.
Claims (29)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0721746A GB0721746D0 (en) | 2007-11-06 | 2007-11-06 | Device |
GB0721746.6 | 2007-11-06 | ||
PCT/GB2008/051030 WO2009060233A1 (en) | 2007-11-06 | 2008-11-05 | 'valve assembly' |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2008/051030 A-371-Of-International WO2009060233A1 (en) | 2007-11-06 | 2008-11-05 | 'valve assembly' |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/903,259 Continuation US9200501B2 (en) | 2007-11-06 | 2013-05-28 | Valve assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100301242A1 true US20100301242A1 (en) | 2010-12-02 |
Family
ID=38858206
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/739,063 Abandoned US20100301242A1 (en) | 2007-11-06 | 2008-11-05 | Valve assembly |
US13/903,259 Active 2029-03-29 US9200501B2 (en) | 2007-11-06 | 2013-05-28 | Valve assembly |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/903,259 Active 2029-03-29 US9200501B2 (en) | 2007-11-06 | 2013-05-28 | Valve assembly |
Country Status (8)
Country | Link |
---|---|
US (2) | US20100301242A1 (en) |
EP (1) | EP2225437B1 (en) |
AT (1) | ATE542025T1 (en) |
AU (1) | AU2008326227B2 (en) |
BR (1) | BRPI0818805B1 (en) |
CA (1) | CA2701994C (en) |
GB (1) | GB0721746D0 (en) |
WO (1) | WO2009060233A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150240628A1 (en) * | 2012-09-26 | 2015-08-27 | Petrowell Limited | Well isolation |
US9163489B2 (en) | 2009-03-13 | 2015-10-20 | Bp Alternative Energy International Limited | Fluid injection |
US9518445B2 (en) | 2013-01-18 | 2016-12-13 | Weatherford Technology Holdings, Llc | Bidirectional downhole isolation valve |
US10132137B2 (en) | 2013-06-26 | 2018-11-20 | Weatherford Technology Holdings, Llc | Bidirectional downhole isolation valve |
US10443348B2 (en) * | 2014-12-31 | 2019-10-15 | Halliburton Energy Services, Inc. | Flapper and seat with a hard and soft seal for a subsurface safety valve |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB201003996D0 (en) | 2010-03-11 | 2010-04-21 | Enovate Systems Ltd | Well barrier |
US8776889B2 (en) * | 2010-07-14 | 2014-07-15 | Weatherford/Lamb, Inc. | Irregularly shaped flapper closure and sealing surfaces |
US9624733B2 (en) * | 2014-03-21 | 2017-04-18 | Baker Hughes Incorporated | Modular annular debris barrier with rotationally locked segments |
CN108798591A (en) * | 2018-06-12 | 2018-11-13 | 武汉理工大学 | A kind of arrow-shaped check valve |
WO2020242446A1 (en) * | 2019-05-24 | 2020-12-03 | Halliburton Energy Services, Inc. | A-sub-surface safety valve assembly |
US11162336B1 (en) * | 2020-07-01 | 2021-11-02 | Baker Hughes Oilfield Operations Llc | Valve component including inclined and/or curved seating element |
EP4256171A4 (en) | 2020-12-04 | 2024-09-18 | Services Petroliers Schlumberger | Dual ball seat system |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3144876A (en) * | 1962-04-25 | 1964-08-18 | Halliburton Co | Swing-type check valve |
US3151839A (en) * | 1962-04-16 | 1964-10-06 | Cicero C Brown | Two-way flapper-type valve |
US3815619A (en) * | 1972-08-31 | 1974-06-11 | Atomic Energy Commission | Fast acting valve |
US5044396A (en) * | 1990-06-18 | 1991-09-03 | Daudet Howard C | Check valve for fluids |
US5323859A (en) * | 1990-10-01 | 1994-06-28 | Halliburton Company | Streamlined flapper valve |
US6328109B1 (en) * | 1999-11-16 | 2001-12-11 | Schlumberger Technology Corp. | Downhole valve |
US20060011354A1 (en) * | 2004-07-16 | 2006-01-19 | Logiudice Michael | Surge reduction bypass valve |
US20060162939A1 (en) * | 2005-01-24 | 2006-07-27 | Vick James D Jr | Dual flapper safety valve |
US20080035353A1 (en) * | 2006-08-14 | 2008-02-14 | William James Hughes | Flapper Valve and Actuator |
US8151889B2 (en) * | 2008-12-08 | 2012-04-10 | Schlumberger Technology Corporation | System and method for controlling flow in a wellbore |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5145005A (en) | 1991-04-26 | 1992-09-08 | Otis Engineering Corporation | Casing shut-in valve system |
US5713389A (en) | 1995-08-24 | 1998-02-03 | Fmc Corporation | Check valve and check valve seat |
GB9911545D0 (en) | 1999-05-19 | 1999-07-21 | French Oilfield Services Ltd | Valve assembly |
GB0425008D0 (en) | 2004-11-12 | 2004-12-15 | Petrowell Ltd | Method and apparatus |
US7913714B2 (en) * | 2007-08-30 | 2011-03-29 | Perlick Corporation | Check valve and shut-off reset device for liquid delivery systems |
US20090229829A1 (en) | 2008-03-17 | 2009-09-17 | Hemiwedge Valve Corporation | Hydraulic Bi-Directional Rotary Isolation Valve |
US9784057B2 (en) | 2008-04-30 | 2017-10-10 | Weatherford Technology Holdings, Llc | Mechanical bi-directional isolation valve |
US9121250B2 (en) | 2011-03-19 | 2015-09-01 | Halliburton Energy Services, Inc. | Remotely operated isolation valve |
-
2007
- 2007-11-06 GB GB0721746A patent/GB0721746D0/en not_active Ceased
-
2008
- 2008-11-05 US US12/739,063 patent/US20100301242A1/en not_active Abandoned
- 2008-11-05 AT AT08846792T patent/ATE542025T1/en active
- 2008-11-05 CA CA2701994A patent/CA2701994C/en not_active Expired - Fee Related
- 2008-11-05 AU AU2008326227A patent/AU2008326227B2/en not_active Ceased
- 2008-11-05 WO PCT/GB2008/051030 patent/WO2009060233A1/en active Application Filing
- 2008-11-05 EP EP20080846792 patent/EP2225437B1/en not_active Not-in-force
- 2008-11-05 BR BRPI0818805A patent/BRPI0818805B1/en not_active IP Right Cessation
-
2013
- 2013-05-28 US US13/903,259 patent/US9200501B2/en active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3151839A (en) * | 1962-04-16 | 1964-10-06 | Cicero C Brown | Two-way flapper-type valve |
US3144876A (en) * | 1962-04-25 | 1964-08-18 | Halliburton Co | Swing-type check valve |
US3815619A (en) * | 1972-08-31 | 1974-06-11 | Atomic Energy Commission | Fast acting valve |
US5044396A (en) * | 1990-06-18 | 1991-09-03 | Daudet Howard C | Check valve for fluids |
US5323859A (en) * | 1990-10-01 | 1994-06-28 | Halliburton Company | Streamlined flapper valve |
US6328109B1 (en) * | 1999-11-16 | 2001-12-11 | Schlumberger Technology Corp. | Downhole valve |
US20060011354A1 (en) * | 2004-07-16 | 2006-01-19 | Logiudice Michael | Surge reduction bypass valve |
US20060162939A1 (en) * | 2005-01-24 | 2006-07-27 | Vick James D Jr | Dual flapper safety valve |
US20080035353A1 (en) * | 2006-08-14 | 2008-02-14 | William James Hughes | Flapper Valve and Actuator |
US8151889B2 (en) * | 2008-12-08 | 2012-04-10 | Schlumberger Technology Corporation | System and method for controlling flow in a wellbore |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9163489B2 (en) | 2009-03-13 | 2015-10-20 | Bp Alternative Energy International Limited | Fluid injection |
US20150240628A1 (en) * | 2012-09-26 | 2015-08-27 | Petrowell Limited | Well isolation |
US10724360B2 (en) * | 2012-09-26 | 2020-07-28 | Weatherford Technology Holdings, Llc | Well isolation |
US9518445B2 (en) | 2013-01-18 | 2016-12-13 | Weatherford Technology Holdings, Llc | Bidirectional downhole isolation valve |
US10273767B2 (en) | 2013-01-18 | 2019-04-30 | Weatherford Technology Holdings, Llc | Bidirectional downhole isolation valve |
US10947798B2 (en) | 2013-01-18 | 2021-03-16 | Weatherford Technology Holdings, Llc | Bidirectional downhole isolation valve |
US10132137B2 (en) | 2013-06-26 | 2018-11-20 | Weatherford Technology Holdings, Llc | Bidirectional downhole isolation valve |
US10138710B2 (en) * | 2013-06-26 | 2018-11-27 | Weatherford Technology Holdings, Llc | Bidirectional downhole isolation valve |
US10954749B2 (en) | 2013-06-26 | 2021-03-23 | Weatherford Technology Holdings, Llc | Bidirectional downhole isolation valve |
US10443348B2 (en) * | 2014-12-31 | 2019-10-15 | Halliburton Energy Services, Inc. | Flapper and seat with a hard and soft seal for a subsurface safety valve |
Also Published As
Publication number | Publication date |
---|---|
EP2225437A1 (en) | 2010-09-08 |
AU2008326227B2 (en) | 2015-12-10 |
US20130248030A1 (en) | 2013-09-26 |
BRPI0818805A2 (en) | 2015-04-22 |
AU2008326227A1 (en) | 2009-05-14 |
CA2701994C (en) | 2016-10-11 |
US9200501B2 (en) | 2015-12-01 |
EP2225437B1 (en) | 2012-01-18 |
GB0721746D0 (en) | 2007-12-19 |
WO2009060233A1 (en) | 2009-05-14 |
CA2701994A1 (en) | 2009-05-14 |
ATE542025T1 (en) | 2012-02-15 |
BRPI0818805B1 (en) | 2018-12-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9200501B2 (en) | Valve assembly | |
US8905140B2 (en) | Downhole deployment valves | |
DK2748419T3 (en) | Flow Activated circulation valve | |
US6672384B2 (en) | Plug-dropping container for releasing a plug into a wellbore | |
EP0786044B1 (en) | Subsurface safety valve of minimized length | |
US7841412B2 (en) | Multi-purpose pressure operated downhole valve | |
EP3073048B1 (en) | Downhole isolation valve | |
US7055611B2 (en) | Plug-dropping container for releasing a plug into a wellbore | |
US9638003B2 (en) | Sleeve valve | |
US5678633A (en) | Shifting tool | |
GB2350852A (en) | Downhole valve assembly for use during well operation and bore-drilling | |
US5873414A (en) | Bypass valve for downhole motor | |
US5794699A (en) | Metal-to-metal sliding side door for wells | |
EP2412917A1 (en) | Hydraulic bi-directional rotary isolation valve | |
EP2834444B1 (en) | Actuator for dual drill string valve and rotary drill string valve configuration therefor | |
EP2834445B1 (en) | Actuator for dual drill string valve and drill string valve configurations therefor | |
US5861562A (en) | Flow measurement mandrel | |
GB2388140A (en) | Downhole isolation valve |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: PETROWELL LIMITED, UNITED KINGDOM Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PATTON, DAMIEN GERARD;HARMAN, DAVIDSON;REEL/FRAME:024528/0440 Effective date: 20100429 |
|
AS | Assignment |
Owner name: PETROWELL LIMITED, UNITED KINGDOM Free format text: CHANGE OF ADDRESS;ASSIGNOR:PETROWELL LIMITED;REEL/FRAME:029878/0085 Effective date: 20130128 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |
|
AS | Assignment |
Owner name: WEATHERFORD TECHNOLOGY HOLDINGS, LLC, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PETROWELL LIMITED;REEL/FRAME:042425/0705 Effective date: 20170327 |
|
AS | Assignment |
Owner name: WEATHERFORD TECHNOLOGY HOLDINGS, LLC, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PETROWELL, LTD.;REEL/FRAME:043506/0292 Effective date: 20170629 |