WO2006043999A2 - Cast flapper with hot isostatic pressing treatment - Google Patents
Cast flapper with hot isostatic pressing treatment Download PDFInfo
- Publication number
- WO2006043999A2 WO2006043999A2 PCT/US2005/022751 US2005022751W WO2006043999A2 WO 2006043999 A2 WO2006043999 A2 WO 2006043999A2 US 2005022751 W US2005022751 W US 2005022751W WO 2006043999 A2 WO2006043999 A2 WO 2006043999A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- casting
- components
- cast
- flapper
- hip
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
Definitions
- the field of the invention is components for downhole tools that can be cast instead of machined from bar and more particularly subsurface safety valve components that are cast and treated by hot isostatic pressing (HIP).
- HIP hot isostatic pressing
- Hot Isostatic Pressing (HIP) 5 the simultaneous application of heat and high pressure, has become a standard production process in many industries.
- HIP Hot Isostatic Pressing
- a high temperature furnace is enclosed in a pressure vessel.
- Work pieces are heated and an inert gas, generally argon, applies uniform pressure.
- the temperature, pressure and process time are all controlled to achieve the optimum material properties.
- HIP frequently allows replacement of wrought components by castings. This reduces the amount of expensive nickel alloy used per part since the casting is near net shape.
- HIP castings reduce the machining time compared to starting with bar stock.
- HIP can reduce quality assurance requirements by improving material properties and reducing property scatter. In some cases, the savings on radiographic costs will cover the costs of HIP.
- HIP is widely used in the casting industry to remove the internal porosity generated during the casting process. This results in improved strength, ductility and fatigue life of the casting. The rejection rate is reduced and the mechanical properties of the parts are more consistent.
- Casting alloys that are routinely HIPped include nickel, cobalt, aluminum and titanium.
- HIP consolidates fine powders into components approaching 100% theoretical density. Pre-sintered components are fully densified or powders are encapsulated in a sealed container, then HIPped directly into a near-net shape. The process lends itself to the processing of tool steels, cemented tungsten carbide, copper, nickel and cobalt alloys. Ceramics and composite materials can also be formed in this manner.
- HIP is used for the bonding of dissimilar material, consolidation of plasma coatings, improvement of welds, processing soft and hard magnetic material and a variety of ceramic applications.
- applications such as turbine engine rebuilding, HIP removes the effects of fatigue in components, which are near the end of their service life. The components can be rejuvenated for further service.
- drill bit components have been HIPped to create hardfacing as illustrated in U.S. Patents 6,138,779; 5,758,733 and 5,560,440.
- the HIP process has been applied to cast nickel alloys requiring high strength and high temperature resistance such as in the aircraft gas turbine industry as illustrated in U. S Patent 6,632,299.
- the HIP process has been shown to reduce porosity in titanium castings as indicated in U.S. Patent 6,705,385.
- HIPping has been shown to raise the corrosion resistance of aluminum alloys as indicated in U.S. Patent 6,733,726.
- the flapper is cast from a 718 nickel alloy and treated with the HIP process to increase strength and corrosion resistance while reducing porosity.
- Other downhole valve components are contemplated to be produced by the same technique and the materials can also be varied.
- the resulting HIP components are either superior in performance (e.g. strength, corrosion resistance) or considerably cheaper to manufacture than their wrought counterparts.
- Figure 1 is a section view of a subsurface safety valve, shown in the closed position.
- Figure 1 shows a subsurface safety valve, SSV, in the closed position.
- a flapper 10 is pivoted closed by a coiled spring 12 against a seat 14 when the flow tube 16 is raised by closure spring 18 ⁇ pon failure of pressure at control line connection 20.
- Figure 1 illustrates a known SS ⁇ V.
- the invention lies in the manner of producing the components, particularly the flapper 10 and its associated seat 22.
- the preferred material is a nickel 718 alloy and it is preferably cast and HIPped and then subjected to finish machining to get the component to its dimensional tolerances.
- the HIPping reduces porosity and increases strength and improves corrosion resistance.
- flapper can be produced by this technique with a resultant cost savings of nearly 70% over machining the part from bar stock, it will be understood that other components of the SSV such as the seat 22 or the flow tube 16 or other parts can be made from the same casting and HIPping technique. While the preferred material for the flapper 10 is a nickel 718 alloy, other materials can be cast and Hipped for downhole tool components to achieve the cost savings and performance improvements reported above.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002571936A CA2571936A1 (en) | 2004-06-24 | 2005-06-24 | Cast flapper with hot isostatic pressing treatment |
GB0625630A GB2431186B (en) | 2004-06-24 | 2005-06-24 | Cast flapper with hot isostatic pressing treatment |
NO20070439A NO20070439L (en) | 2004-06-24 | 2007-07-12 | Stopped flap valve with heat isostatic pressure treatment |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US58261404P | 2004-06-24 | 2004-06-24 | |
US60/582,614 | 2004-06-24 | ||
US11/158,035 | 2005-06-21 | ||
US11/158,035 US20050284547A1 (en) | 2004-06-24 | 2005-06-21 | Cast flapper with hot isostatic pressing treatment |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2006043999A2 true WO2006043999A2 (en) | 2006-04-27 |
WO2006043999A3 WO2006043999A3 (en) | 2006-06-15 |
WO2006043999A8 WO2006043999A8 (en) | 2006-08-10 |
Family
ID=35504312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/022751 WO2006043999A2 (en) | 2004-06-24 | 2005-06-24 | Cast flapper with hot isostatic pressing treatment |
Country Status (6)
Country | Link |
---|---|
US (1) | US20050284547A1 (en) |
AU (1) | AU2005297755A1 (en) |
CA (1) | CA2571936A1 (en) |
NO (1) | NO20070439L (en) |
RU (1) | RU2007102424A (en) |
WO (1) | WO2006043999A2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050284547A1 (en) * | 2004-06-24 | 2005-12-29 | Strattan Scott C | Cast flapper with hot isostatic pressing treatment |
CN101061289A (en) * | 2004-06-24 | 2007-10-24 | 贝克休斯公司 | Cast flapper with hot isostatic pressing treatment |
US9212536B2 (en) * | 2012-06-25 | 2015-12-15 | Schlumberger Technology Corporation | Device having a hard seat support |
EP3122988B1 (en) * | 2014-03-26 | 2018-10-31 | Drillmec S.p.A. | Method of assembly of a string of elements for deepwater drilling and ultradeep, obstruction element and corresponding use of the same in the said drilling string |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4630692A (en) * | 1984-07-23 | 1986-12-23 | Cdp, Ltd. | Consolidation of a drilling element from separate metallic components |
US4869329A (en) * | 1987-04-06 | 1989-09-26 | Smith International, Inc. | Rock bit insert |
US5088554A (en) * | 1990-10-22 | 1992-02-18 | Otis Engineering Corporation | Sintered metal sand screen |
US5328763A (en) * | 1993-02-03 | 1994-07-12 | Kennametal Inc. | Spray powder for hardfacing and part with hardfacing |
US6138779A (en) * | 1998-01-16 | 2000-10-31 | Dresser Industries, Inc. | Hardfacing having coated ceramic particles or coated particles of other hard materials placed on a rotary cone cutter |
US6632299B1 (en) * | 2000-09-15 | 2003-10-14 | Cannon-Muskegon Corporation | Nickel-base superalloy for high temperature, high strain application |
US20050284547A1 (en) * | 2004-06-24 | 2005-12-29 | Strattan Scott C | Cast flapper with hot isostatic pressing treatment |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4971101A (en) * | 1980-04-10 | 1990-11-20 | Cameron Iron Works Usa, Inc. | Lined structure |
USRE32389E (en) * | 1980-04-10 | 1987-04-07 | Cameron Iron Works, Inc. | Method of producing a lined structure |
US4373410A (en) * | 1980-07-21 | 1983-02-15 | Kenneth Davis | Method and apparatus for fabricating diamond stud assemblies |
JPS59198951A (en) * | 1983-04-25 | 1984-11-10 | Takeda Chem Ind Ltd | Production of processed soybean food |
US4593776A (en) * | 1984-03-28 | 1986-06-10 | Smith International, Inc. | Rock bits having metallurgically bonded cutter inserts |
US4562892A (en) * | 1984-07-23 | 1986-01-07 | Cdp, Ltd. | Rolling cutters for drill bits |
US4673549A (en) * | 1986-03-06 | 1987-06-16 | Gunes Ecer | Method for preparing fully dense, near-net-shaped objects by powder metallurgy |
AT399513B (en) * | 1990-10-05 | 1995-05-26 | Boehler Edelstahl | METHOD AND DEVICE FOR PRODUCING METALLIC ALLOYS FOR PRE-MATERIALS, COMPONENTS, WORKPIECES OR THE LIKE OF TITANIUM-ALUMINUM BASE ALLOYS |
US5241738A (en) * | 1991-03-21 | 1993-09-07 | Howmet Corporation | Method of making a composite casting |
US6355117B1 (en) * | 1992-10-30 | 2002-03-12 | United Technologies Corporation | Nickel base superalloy single crystal articles with improved performance in air and hydrogen |
US5560440A (en) * | 1993-02-12 | 1996-10-01 | Baker Hughes Incorporated | Bit for subterranean drilling fabricated from separately-formed major components |
US5820700A (en) * | 1993-06-10 | 1998-10-13 | United Technologies Corporation | Nickel base superalloy columnar grain and equiaxed materials with improved performance in hydrogen and air |
US5442847A (en) * | 1994-05-31 | 1995-08-22 | Rockwell International Corporation | Method for thermomechanical processing of ingot metallurgy near gamma titanium aluminides to refine grain size and optimize mechanical properties |
US5755299A (en) * | 1995-08-03 | 1998-05-26 | Dresser Industries, Inc. | Hardfacing with coated diamond particles |
US5758733A (en) * | 1996-04-17 | 1998-06-02 | Baker Hughes Incorporated | Earth-boring bit with super-hard cutting elements |
US6106957A (en) * | 1998-03-19 | 2000-08-22 | Smith International, Inc. | Metal-matrix diamond or cubic boron nitride composites |
US6880647B2 (en) * | 2003-05-12 | 2005-04-19 | Schlumberger Technology Corporation | Chassis for downhole drilling tool |
-
2005
- 2005-06-21 US US11/158,035 patent/US20050284547A1/en not_active Abandoned
- 2005-06-24 CA CA002571936A patent/CA2571936A1/en not_active Abandoned
- 2005-06-24 RU RU2007102424/02A patent/RU2007102424A/en not_active Application Discontinuation
- 2005-06-24 WO PCT/US2005/022751 patent/WO2006043999A2/en active Application Filing
- 2005-06-24 AU AU2005297755A patent/AU2005297755A1/en not_active Abandoned
-
2007
- 2007-07-12 NO NO20070439A patent/NO20070439L/en not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4630692A (en) * | 1984-07-23 | 1986-12-23 | Cdp, Ltd. | Consolidation of a drilling element from separate metallic components |
US4869329A (en) * | 1987-04-06 | 1989-09-26 | Smith International, Inc. | Rock bit insert |
US5088554A (en) * | 1990-10-22 | 1992-02-18 | Otis Engineering Corporation | Sintered metal sand screen |
US5328763A (en) * | 1993-02-03 | 1994-07-12 | Kennametal Inc. | Spray powder for hardfacing and part with hardfacing |
US6138779A (en) * | 1998-01-16 | 2000-10-31 | Dresser Industries, Inc. | Hardfacing having coated ceramic particles or coated particles of other hard materials placed on a rotary cone cutter |
US6632299B1 (en) * | 2000-09-15 | 2003-10-14 | Cannon-Muskegon Corporation | Nickel-base superalloy for high temperature, high strain application |
US20050284547A1 (en) * | 2004-06-24 | 2005-12-29 | Strattan Scott C | Cast flapper with hot isostatic pressing treatment |
Also Published As
Publication number | Publication date |
---|---|
CA2571936A1 (en) | 2006-04-27 |
NO20070439L (en) | 2007-01-23 |
AU2005297755A1 (en) | 2006-04-27 |
RU2007102424A (en) | 2008-07-27 |
WO2006043999A8 (en) | 2006-08-10 |
WO2006043999A3 (en) | 2006-06-15 |
US20050284547A1 (en) | 2005-12-29 |
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