WO2010036547A2 - Pressure relieving transition joint - Google Patents
Pressure relieving transition joint Download PDFInfo
- Publication number
- WO2010036547A2 WO2010036547A2 PCT/US2009/057142 US2009057142W WO2010036547A2 WO 2010036547 A2 WO2010036547 A2 WO 2010036547A2 US 2009057142 W US2009057142 W US 2009057142W WO 2010036547 A2 WO2010036547 A2 WO 2010036547A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wellbore
- window
- apertures
- seal
- tubular string
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0035—Apparatus or methods for multilateral well technology, e.g. for the completion of or workover on wells with one or more lateral branches
- E21B41/0042—Apparatus or methods for multilateral well technology, e.g. for the completion of or workover on wells with one or more lateral branches characterised by sealing the junction between a lateral and a main bore
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
Definitions
- Wells may comprise a plurality of wellbores.
- a main wellbore may be drilled and one or more branch wellbores may be drilled off of the main wellbore.
- the branch wellbores may be referred to in some contexts as lateral wellbores.
- Wells comprising at least one lateral wellbore may be referred to in some contexts as multilateral wells.
- a transition joint may be used in completion of a multilateral well, for example to complete Technical Advance Multilateral (TAML) level 3 completions, to provide a useful transition between a parent wellbore and a branch wellbore bored off of the parent wellbore.
- a parent wellbore may be the main wellbore or may itself be a branch wellbore drilled off of the main wellbore or off of another branch wellbore.
- Sealing off a formation proximate to the junction of the parent wellbore with the branch wellbore may be called for to avoid formation particulate matter, for example fines and/or sand, passing into the parent wellbore and/or the branch wellbore. Particulate matter in the wellbores may plug or prematurely wear production equipment and/or cause other problems.
- a pressure differential may exist between the formation proximate to the junction of the parent wellbore with the branch wellbore. The pressure differential may exert unwanted stress on a seal of the transition joint.
- a method of completing a wellbore having a branch wellbore extending outwardly from a window in a parent wellbore comprises positioning a tubular string in the window, wherein the positioning comprises deflecting the tubular string from the parent wellbore into the branch wellbore.
- the method also comprises providing a particulate barrier outside and against the tubular string proximate the window, the particulate barrier substantially excluding transport of particulate matter from the branch wellbore into the parent wellbore outside of the tubular string through the window.
- the method also comprises the tubular string passing fluid into the tubular string proximate the window from a formation proximate to the window while substantially excluding transport of particulate matter from the formation proximate to the window into the tubular string.
- a completion tool for a well having a branch wellbore extending outwardly from a window in a parent wellbore comprises a metal pipe having an upper end and a lower end, a pipe wall opening, and a plurality of apertures.
- the completion tool also includes a particulate blocking member coupled to the metal pipe. After installation, the upper end is contained in the parent wellbore upwards from the window and the lower end is contained in the branch wellbore.
- a transition joint seal for coupling a parent wellbore to a branch wellbore extending outwardly from a window in the parent wellbore.
- the transition joint seal comprises a metal pipe and a swell seal.
- the metal pipe has a wall opening along a first side of the pipe.
- the swell seal is coupled to a middle portion of the metal pipe and is swellable in the wellbore by increasing in a volume of the swell seal to promote sealing between the window and the metal pipe.
- a plurality of apertures in the metal pipe align with a plurality of apertures in the swell seal, and the apertures in the metal pipe substantially block transport of particulate matter from a reservoir proximate to the window into the wellbore and allow fluid flow from the reservoir into the wellbore.
- the transition joint seal comprises a screen structure having a wall opening along a first side of the screen structure and a swell seal.
- the swell seal is coupled to a middle portion of the screen structure, the swell seal being swellable in the wellbore by increasing in a volume of the swell seal to promote sealing between the window and the screen structure and the swell seal having a plurality of apertures.
- the screen structure substantially blocks transport of particulate matter from a formation proximate to the window into the wellbore and allows fluid flow from the formation proximate to the window through the apertures in the swell seal into the wellbore.
- FIG. 1 is an illustration of a well completion system according to an embodiment of the disclosure.
- FIG. 2. is an illustration of a well completion system with a sealing material activated for sealing a transition zone between a parent wellbore and a branch wellbore according to an embodiment of the disclosure.
- FIG. 3A is an illustration of a side view of a transition joint in a first position according to an embodiment of the disclosure.
- FIG. 3B is an illustration of a side view of the transition joint in a second position according to an embodiment of the disclosure.
- FIG. 3C is an illustration of a top view of the transition joint according to an embodiment of the disclosure.
- FIG. 3D is an illustration of a side view of the transition joint according to an embodiment of the disclosure.
- FIG. 4A is an illustration of a pressure relieving means according to an embodiment of the disclosure.
- FIG. 4B is an illustration of another pressure relieving means according to an embodiment of the disclosure.
- FIG. 5A is an illustration of a side view of a transition joint in a first position showing an opening in a metal tubular according to an embodiment of the disclosure.
- FIG. 5B is an illustration of a side view of the transition joint in a second position showing apertures in a metal tubular according to an embodiment of the disclosure.
- FIG. 5C is an illustration of a top view of the transition joint showing an opening and apertures in a metal tubular according to an embodiment of the disclosure.
- FIG. 5D is an illustration of a side view of the transition joint showing apertures in a metal tubular according to an embodiment of the disclosure.
- a pressure relieving transition joint is disclosed that achieves the desirable objective of blocking or reducing propagation of particulate matter, such as fines and/or sand, into a parent wellbore and/or a branch wellbore drilled off of the parent wellbore while also avoiding collapse under stress from pressure from a formation proximate to the junction of the branch wellbore and the parent wellbore.
- the pressure relieving transition joint has one or more apertures facing the formation that are operable to pass fluid such as liquids and/or gases flowing from the formation into the wellbore while also blocking or substantially reducing propagation of particulate matter into the wellbore.
- the admission of fluids through the apertures reduces the pressure from the formation on the transition joint, thereby reducing the force on the transition joint from a pressure differential between the outside and the inside of the transition joint.
- the contemplated pressure relieving transition joint reduces a pressure differential between the wellbore and the formation proximate to the junction of the branch wellbore and the parent wellbore, immediately at the junction.
- a particulate barrier may be provided between the pressure relieving transition joint, the parent wellbore, and the branch wellbore that substantially excludes transport of particulate matter, for example fines and/or sand, from the formation proximate the junction of the parent wellbore and the branch wellbore around the outside of the pressure relieving transition joint into the pressure relieving transition joint.
- the particulate barrier may be provided by a swelling seal.
- the transition joint comprises a swelling seal to form a seal between the transition joint and a window drilled through the parent wellbore to drill the branch wellbore.
- the swelling seal which may also be referred to in some contexts as a swellable seal, may exclude fluids as well as particulate matter from flowing around the outside of the pressure relieving transition joint into the pressure relieving transition joint and/or into the parent wellbore.
- Apertures in a metal tubular portion of the transition joint align with at least some of apertures in the swelling seal in a portion of the transition joint facing the window. The apertures permit fluid flow from the formation proximate to the window to flow through the swelling seal and the metal tubular, thereby reducing or eliminating a pressure differential between the formation and the wellbore.
- the particulate barrier may be provided by at least one of injection foam or injection gel that is applied after or in coordination with positioning the pressure relieving transition joint in the junction between the parent wellbore and the branch wellbore. After being injected, the foam and/or gel may set and provide a seal to block particulate matter from entering the pressure relieving transition joint through gaps between the pressure relieving transition joint and the junction of the parent wellbore and the branch wellbore.
- the particulate barrier comprises packing of particulate matter into gaps between the pressure relieving transition joint, the parent wellbore, and the branch wellbore. This packing of particulate matter may result, after the pressure relieving transition joint is positioned in the junction between the parent wellbore and the branch wellbore, from passing fluid from the formation proximate to the junction into the wellbore. This packing of particulate matter may continue to admit fluids from the formation proximate to the junction to pass into the wellbore while substantially blocking and/or excluding transport of particulate matter into the pressure relieving transition joint.
- the particulate barrier acts substantially as a barrier or block to movement and/or migration of particulate matter into the pressure relieving transition joint from the formation proximate to the junction between the parent wellbore and the branch wellbore and not necessarily a barrier composed of particulates. In the last case, however, the particulate barrier also happens to be composed of particulates.
- the pressure relieving transition joint When installed in a wellbore, the pressure relieving transition joint will pass hydrocarbons produced from production zones in the parent wellbore and/or the branch wellbore below and/or beyond the pressure relieving transition joint, through the transition joint, and upwards into the wellbore above the transition joint. Additionally, the pressure relieving transition joint will provide access for downhole tools through the transition joint to the parent wellbore and the branch wellbore below and/or beyond the transition joint.
- the size of apertures in the metal tubular portion may be effective to block or reduce propagation of particulate matter into the wellbore.
- the metal tubular is constructed of slotted tubing wherein the slots are effectively sized to block or reduce propagation of particulate matter into the wellbore.
- slotted tubing having slots with a width in the range from about 0.01 inches to about 0.04 inches and a length in the range from about 1.5 inches to about 3 inches may be employed, but in other embodiments a different width and/or length slot may be employed.
- the size of the slots in the slotted tubing may be selected based on the grain size distribution that is expected at the location where the transition joint will be installed in the wellbore.
- a screen such as a sand screen
- a screen may be coupled to the metal tubular portion in association with the apertures to block and/or reduce propagation of particulate matter into the wellbore.
- pressure relief valves may be installed into the apertures in the metal tubular portion to relieve any pressure differentials while also blocking and/or reducing propagation of particulate matter into the wellbore.
- FIG. 1 a well completion system 10 is discussed.
- directional terms such as “above,” “below,” “upper,” and “lower,” etc., are used for convenience in referring to the accompanying drawings.
- “Above” means relatively closer to the earth's surface along a wellbore, and the term “below” means relatively farther from the earth's surface. It is understood that the several embodiments of the present disclosure may be utilized in various orientations, such as inclined, inverted, horizontal, vertical, etc., and in various configurations, without departing from the principles set forth herein.
- a main or parent wellbore 12 has been drilled and then lined with casing 14.
- the parent wellbore 12 may extend continuously to the earth's surface, or it may be a branch of another wellbore. In another embodiment, however, the parent wellbore 12 may be uncased and an open wellbore. If the parent wellbore 12 is cased, the wellbore can be considered the interior of the casing 14.
- a branch wellbore 16 is drilled extending outwardly from a window 18 formed through a sidewall of the casing 14.
- the window 18 can be formed before or after the casing 14 is installed in the parent wellbore 12.
- the window 18 could be formed by anchoring a whipstock (not shown) in the casing 14, and then deflecting a mill laterally off of the whipstock to cut the window 18 through the casing sidewall.
- a formation or zone 20 surrounds the intersection and/or junction between the parent and branch wellbores 12, 16.
- the formation 20 may be said to be proximate to the junction between the parent and branch wellbores 12, 16.
- an assembly 22 is positioned in the window 18.
- the assembly 22 is depicted as including a tubular string 24 having a transition joint 26 interconnected therein.
- the assembly 22 may be referred to as a completion tool.
- the tubular string 24 may be referred to as a metal tubular having an upper end and a lower end.
- a lower end of the tubular string 24 is deflected into branch wellbore 16, for example, by using a whipstock or other deflector positioned in the parent wellbore 12.
- the lower end of the tubular string 24 is contained in the branch wellbore 16 and an upper end of the tubular string 24 is contained in the parent wellbore 12.
- the lower end of the tubular string 24 may be cemented in the branch wellbore 16, if desired.
- the transition joint 26 has an opening 28 formed through a sidewall thereof.
- the opening 28 may be referred to as a pipe wall opening.
- the opening 28 may be formed in the sidewall of the transition joint 26 before or after run in of the assembly 22.
- the opening 28 provides fluid communication (and preferably access) between an interior of the tubular string 24 and the parent wellbore 12 external to the tubular string 24 below the window 18.
- the opening 28, in some contexts, may be said to couple the parent wellbore 12 downwards from the window 18 to the parent wellbore 12 upwards from the window 18.
- a sealing material 30 may be provided on the transition joint 26.
- the sealing material 30 may be referred to as a blocking member.
- the sealing material 30 may be provided in the form of a coating adhered externally to the transition joint 26. However, other methods of attaching the sealing material 30 to the transition joint 26 may be used. In an embodiment, the sealing material 30 is not a coating but is a continuous sleeve of sealing material 30 installed over the assembly 22 at the transition joint 26 that adheres to the transition joint 26 by friction. In some contexts, the sealing material 30 may be referred to as a swellable seal. At least some of the apertures in the sealing material 30 are aligned with at least some of the apertures in the transition joint 26 and/or the tubular string 24. An opening in the sealing material 30 substantially aligns with the opening 28 in the tubular string 24.
- the sealing material 30 may be said to provide a particulate barrier outside and against the tubular string 24 proximate the window 18.
- the apertures unload pressure to reduce the differential pressure to a magnitude of less than about 50 pounds per square inch (PSI).
- PSI pounds per square inch
- the pressure gradient between the formation 20 and the parent and branch wellbores 12, 16 may be directed substantially perpendicular to the side of the transition joint 26 facing the formation 20 proximate to the window 18.
- Blocking means and/or devices are provided for preventing propagation of particulate matter from the formation 20 into the parent and branch wellbores 12, 16.
- the blocking means may be provided by sand screens coupled to the transition joint 26.
- the blocking means may be provided by permeable filters coupled to the transition joint 26.
- the blocking means may be provided by use of slotted pipe material in forming the tubular string 24 and/or the transition joint 26, for example slotted pipe having slots in the range of about 0.01 inches to about 0.04 inches wide and in the range of about 1.5 inches to about 3 inches long.
- the blocking means may be provided by pressure relief valves installed in the apertures in the transition joint 26.
- the blocking means may be said to exclude or block transport of particulate matter from the formation 20 into the wellbore.
- the sealing material 30 swells when exposed to fluid in the well.
- the sealing material 30 increases in volume and expands radially outward when a particular fluid or combination of fluids contacts the sealing material 30 in the well.
- the sealing material 30 may swell in response to exposure to hydrocarbon fluid (such as oil or gas) and/or in response to exposure to water in the well.
- the sealing material 30 may be made, at least in part, of a rubber compound. In other embodiments, however, the sealing material 30 may be made of other materials.
- the system 10 is described after the sealing material 30 has swollen in the window 18.
- the seal 32 is now formed by the swollen sealing material 30 between the transition joint 26 and the window 18.
- This seal 32 may be used, in part, to prevent particulate matter including fines, sand, and other material from propagating from the formation 20 into the parent wellbore 12, specifically preventing particulate matter from passing between the sides of the transition joint 26 and the parent and branch wellbores 12, 16 into the transition joint 26 and/or the parent wellbore 12.
- the tubular string 24 could be cemented into the branch wellbore 16 before or after the seal 32 is formed.
- the sealing material 30, when swollen, may provide another seal 34 between the transition joint 26 and the casing 14 in the parent wellbore 12.
- the seal 34 can be used as an annular barrier above the opening 28. Note that the opening 28 is conveniently positioned between the seals 32, 34 for providing fluid communication between the interior of the tubular string 24 and the parent wellbore 12 below the window 18.
- the apertures in the sealing material 30 and in the transition joint 26 relieve formation pressure that may be present in the formation 20. Without the apertures, formation pressure may break one of the seal 32 and the seal 34 and drive particulate matter under high pressure past the seals 32, 34, eroding the sealing material 30 over time.
- the relief of the formation pressure by the apertures reduces the pressure differential between the formation 20 and the parent wellbore 12 sufficiently to reduce stress on the seals 32, 34 to a manageable level, for example to less than about 50 PSI.
- FIG. 3A a first side of the assembly 22 is viewed.
- FIG. 3B a second side of the assembly 22 is viewed, where the second view is about opposite of the first view.
- FIG. 3C a top view of the assembly 22 is shown.
- the opening 28 is located on an opposite side of the sealing material 30 from a plurality of apertures 29 in the sealing material 30.
- the opening 28 located in the tubular string 24 may be aligned with a corresponding opening in the sealing material 30.
- the apertures 29 in the sealing material 30 are located in horizontal rows about 120 degrees apart from each other in the horizontal direction. In an embodiment, the apertures 29 are about 4 square inches in area.
- the apertures 29 may have a different size and area.
- the size of the apertures 29 is designed to take into account the swelling of the sealing material 30 when activated by at least one of hydrocarbons and/or water in the wellbore, to avoid the apertures 29 closing when the sealing material 30 swells. While illustrated as roughly rectangular, the apertures 29 may take other shapes. The apertures 29 may have straight shoulders or they may be beveled or rounded.
- the assembly 22 may be about 40 feet long and the sealing material 30 may be about 20 feet to about 30 feet long. In an embodiment, the sealing material 30 is about 25 feet long.
- the rows of apertures 29 may be separated in the range from about 3 feet to about 5 feet apart vertically. As illustrated in FIG. 3D, in an embodiment, the apertures 29 may be staggered with respect to each other.
- the tubular string 24 may be 7 5/8 inches outside diameter and 6 1/8 inches inside diameter, but in other embodiments the tubular string 24 may have a different outside and/or inside diameter.
- the sealing material 30 may have a pre-swelling outside diameter of 8 3/8 inches, but in other embodiments the sealing material 30 may have a different pre-swelling outside diameter.
- the side of the assembly 22 illustrated in FIG. 3B is oriented towards the window 18 and the formation 20 while the side of the assembly 22 illustrated in FIG. 3A is oriented away from the window 18 and the formation 20.
- FIG. 4A a means for relieving differential pressure between the formation 20 and an interior of the assembly 22 is described.
- the tubular string 24 has a plurality of apertures 31 aligned with the apertures 29 in the sealing material 30.
- the apertures 29 may each be less than about 1 square inches in area. In an embodiment, the apertures 29 may be circular and have a diameter of less than about 1 inch. In an embodiment, the apertures 29 may be circular and have a diameter in the range of about 0.04 inches to about 0.3 inches.
- the tubular string 24 may be coupled to a plurality of screens 33 to block or reduce the passage of particulate matter, for example fines and/or sand, from the formation 20 into the wellbore.
- the screens 33 may be retained within the apertures 29 by snap rings.
- the apertures 29 may be at least partly threaded, and the screens 33 may screw into the threading in the apertures 29.
- the screens 33 may be welded to the tubular string 24 over the apertures 29.
- the screens 33 may be adhered to the tubular string 24 using epoxy or other adhesives.
- the screens 33 may be coupled to the tubular string 24 using other means known to those skilled in the art.
- the screens 33 may be aligned with the apertures 31.
- the screens 33 may be attached to the outside of the tubular string 24 over the apertures 31 or on the inside of the tubular string 24.
- the tubular string 24 or a portion of the tubular string 24, for example the transition joint 26, may comprise a screen structure.
- the apertures 29, 31 and the screens 33 allow fluid flow from the formation 20 to pass into the assembly 22 and into the wellbore, thereby relieving a pressure differential between the exterior and interior of the assembly 22, while substantially blocking particulate matter.
- sand from the formation 20 may pack against the screens 33 but allow fluid passage.
- the screens 33 may allow fluid flow from the formation 20 into the assembly 22 but block fluid from the assembly 22 into the formation 20.
- the screens 33 may be replaced with permeable filters.
- the screens 33 may be replaced with pressure relief valves (not shown) which open to allow fluid flow to reduce a pressure differential between the formation 20 and the interior of the assembly 22 while also blocking passage of particulate matter into the wellbore and closing to block fluid flow from the interior of the assembly to the formation 20.
- the tubular string 24 is at least partially constructed of slotted tubing.
- the tubular string 24 may be constructed of tubing having slots in the range of about 0.01 inches to about 0.04 inches wide and in the range about 1.5 inches to about three inches long.
- other slot sizes may be employed that are effective to block and/or exclude transport of particulate matter from the formation 20 into the wellbore.
- the apertures 31 in the tubular string 24 may be provided by the slots.
- the apertures 31 may allow fluid flow from the formation 20 into the interior of the assembly 22, thereby relieving and reducing a pressure differential between the formation 20 and the wellbore, while blocking the entry of particulate matter, for example fines and/or sand, from the formation into the wellbore.
- particulate matter for example fines and/or sand
- sand from the formation 20 may pack against the apertures 31 in the tubular string 24 provided by the slots but allow fluid passage through the slots into the wellbore.
- the tubular string 24 may not have the sealing material 30.
- the lower end of the tubular string 24 is deflected into the branch wellbore 16, and fluid flows from the formation 20 into the wellbore through the apertures 31 in the tubular string 24 and around the junction of the window 18 with the assembly 22.
- the apertures 31 may be disposed in horizontal rows, apertures 31 in the same row horizontally offset from each other by about 120 degrees.
- the apertures 31 may be on a side of the tubular string 24 about opposite of the side of the tubular string containing the opening 28.
- the horizontal row of apertures 31 may be located in the range of about every three feet to about five feet vertically along the tubular string 24.
- the apertures 31 may be staggered and/or offset from each other.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0913801-3A BRPI0913801B1 (en) | 2008-09-25 | 2009-09-16 | METHOD FOR COMPLETING A DRILLING AND COMPLETING TOOL FOR A WELL |
EP09792607A EP2326792A2 (en) | 2008-09-25 | 2009-09-16 | Pressure relieving transition joint |
AU2009296846A AU2009296846B2 (en) | 2008-09-25 | 2009-09-16 | Pressure relieving transition joint |
CN200980137234.8A CN102203376B (en) | 2008-09-25 | 2009-09-16 | Pressure relieving transition joint |
CA2736804A CA2736804C (en) | 2008-09-25 | 2009-09-16 | Pressure relieving transition joint |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/237,646 US7984762B2 (en) | 2008-09-25 | 2008-09-25 | Pressure relieving transition joint |
US12/237,646 | 2008-09-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2010036547A2 true WO2010036547A2 (en) | 2010-04-01 |
WO2010036547A3 WO2010036547A3 (en) | 2011-07-14 |
Family
ID=41697926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2009/057142 WO2010036547A2 (en) | 2008-09-25 | 2009-09-16 | Pressure relieving transition joint |
Country Status (7)
Country | Link |
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US (3) | US7984762B2 (en) |
EP (1) | EP2326792A2 (en) |
CN (1) | CN102203376B (en) |
AU (1) | AU2009296846B2 (en) |
BR (1) | BRPI0913801B1 (en) |
CA (1) | CA2736804C (en) |
WO (1) | WO2010036547A2 (en) |
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US11761293B2 (en) | 2020-12-14 | 2023-09-19 | Halliburton Energy Services, Inc. | Swellable packer assemblies, downhole packer systems, and methods to seal a wellbore |
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-
2008
- 2008-09-25 US US12/237,646 patent/US7984762B2/en not_active Expired - Fee Related
-
2009
- 2009-09-16 AU AU2009296846A patent/AU2009296846B2/en not_active Ceased
- 2009-09-16 BR BRPI0913801-3A patent/BRPI0913801B1/en not_active IP Right Cessation
- 2009-09-16 CN CN200980137234.8A patent/CN102203376B/en not_active Expired - Fee Related
- 2009-09-16 EP EP09792607A patent/EP2326792A2/en not_active Withdrawn
- 2009-09-16 CA CA2736804A patent/CA2736804C/en not_active Expired - Fee Related
- 2009-09-16 WO PCT/US2009/057142 patent/WO2010036547A2/en active Application Filing
-
2011
- 2011-03-29 US US13/075,071 patent/US8171995B2/en active Active
-
2012
- 2012-02-06 US US13/366,484 patent/US8251145B2/en active Active
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AU2009296846A1 (en) | 2010-04-01 |
US20100071905A1 (en) | 2010-03-25 |
US8251145B2 (en) | 2012-08-28 |
CN102203376B (en) | 2015-05-20 |
CA2736804C (en) | 2013-07-09 |
US7984762B2 (en) | 2011-07-26 |
WO2010036547A3 (en) | 2011-07-14 |
US20110174480A1 (en) | 2011-07-21 |
EP2326792A2 (en) | 2011-06-01 |
CA2736804A1 (en) | 2010-04-01 |
CN102203376A (en) | 2011-09-28 |
US8171995B2 (en) | 2012-05-08 |
AU2009296846B2 (en) | 2015-05-21 |
US20120132427A1 (en) | 2012-05-31 |
BRPI0913801B1 (en) | 2019-04-02 |
BRPI0913801A2 (en) | 2015-10-20 |
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