CA2486703C - High pressure and temperature seal for downhole use - Google Patents
High pressure and temperature seal for downhole use Download PDFInfo
- Publication number
- CA2486703C CA2486703C CA002486703A CA2486703A CA2486703C CA 2486703 C CA2486703 C CA 2486703C CA 002486703 A CA002486703 A CA 002486703A CA 2486703 A CA2486703 A CA 2486703A CA 2486703 C CA2486703 C CA 2486703C
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- CA
- Canada
- Prior art keywords
- seal
- gap
- legs
- support member
- spring
- 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.)
- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000003780 insertion Methods 0.000 abstract description 13
- 230000037431 insertion Effects 0.000 abstract description 13
- 125000006850 spacer group Chemical group 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/01—Sealings characterised by their shape
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Gasket Seals (AREA)
- Sealing Devices (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Cable Accessories (AREA)
Abstract
A seal (5) for use in temperature and pressure extremes is disclosed. It features springs internal to the sealing members and the ability to seal against pressure differentials from opposed directions. A spacer ring (50) prevents contact from oppositely oriented seal components (42, 46, 48, 54, 58, 60) and at the same time prevents spring and seal collapse under extreme loading conditions. The seal assembly is self-centering in a downhole seal bore and can be used on tools delivered on wireline, where the insertion forces available are at a minimum. The seal can withstand pressure differentials in excess of 13,500 PSI and temperatures above 350 degrees Fahrenheit.
Description
HIGH PRESSURE AND TEMPERATURE SEAL FOR DOWNHOLE USE
FIELD OF THE INVENTION
FIELD OF THE INVENTION
[0002] The field of this invention is a seal for use in temperatures of over 300 degrees Fahrenheit and over 10,000 pounds per square inch (PSI) and more particularly a seal adapted for wireline use where insertion forces are limited.
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION
[0003] Currently, in downhole applications, there are different types of seals to handle high temperature and pressure applications. The present limits of service of these designs are roughly about 350 degrees Fahrenheit and about 13,500 PSI. Under more severe temperature or/and pressure conditions, the presently known designs have been tested and have failed to perform reliably.
[0004] Depending on the application, there are different types of seals for high temperatures or/and pressures. In the case of packers set in high temperature applications, U.S. Patent 4,441,721 asbestos fibers impregnated with InconelTM wire are used in conjunction with a stack of Belleville washers to hold the set under temperature extremes.
Apart from packers or bridge plugs which require seal activation after placement in the proper position, there are other applications involving seals on tools that have to engage a seal bore receptacle downhole and still need to withstand these extremes of temperature and pressure. In many cases, the tool with the seal to land in a seal bore is delivered on wireline.
This means that insertion forces are limited because minimal force can be transmitted from the surface through wireline. In these applications, the limited insertion force is a design parameter that has to be counterbalanced with the frictional resistance to insertion created by the interference of the seal in the seal bore. This interference is built into the design of the seal to allow sufficient contact with the seal bore after insertion for proper seal operation.
Clearly if the interference is too great the insertion, particularly with a wireline, will become problematic. On the other hand, reducing the interference can result in seal failure under the proposed extreme conditions of pressure and temperature.
Apart from packers or bridge plugs which require seal activation after placement in the proper position, there are other applications involving seals on tools that have to engage a seal bore receptacle downhole and still need to withstand these extremes of temperature and pressure. In many cases, the tool with the seal to land in a seal bore is delivered on wireline.
This means that insertion forces are limited because minimal force can be transmitted from the surface through wireline. In these applications, the limited insertion force is a design parameter that has to be counterbalanced with the frictional resistance to insertion created by the interference of the seal in the seal bore. This interference is built into the design of the seal to allow sufficient contact with the seal bore after insertion for proper seal operation.
Clearly if the interference is too great the insertion, particularly with a wireline, will become problematic. On the other hand, reducing the interference can result in seal failure under the proposed extreme conditions of pressure and temperature.
[0005] There are other design considerations for seals that engage a seal bore downhole. Clearly, on the trip downhole, the seal is exposed to mechanical contact with well tubulars or otlier equipment. The materials for the seal must be rugged enough to withstand such mechanical impacts as well as to withstand the temperatures and pressures anticipated in the dowi-Aiole location.
[0006] These seals also need to control extreme pressure differentials in an uphole and a downhole direction. Such seals may be inserted and removed from several seal bores during their service life. The design has to be flexible enougli to allow long service periods under such extreme conditions as well as the resiliency to allow removal and reinsertion witllout daniage to the seal or the surrounding seal bore.
[0007] Figure 1 illustrates the current commercially available seal that is promoted for severe duty applications. It illustrates a mirror image arrangement around a central adapter 16.
A pair of chevron packing rings 14 are disposed about the adapter 16 and outside of the rings 14 is a baclc-up v-ring 12 and outside of v-ring 12 is an end ring 10 to complete one half of the mirror image arrangement shown in Figure 1. The open portions of the v-shaped rings open toward the central adapter in an effort to position the rings to withstand pressure differentials from opposite directions. The rings are made of materials suitable for the anticipated temperatures. Tests at pressure extremes of over 13,500 PSI and temperatures above 350 degrees Fahrenheit revealed that this design was unsuitable for reliable service.
A pair of chevron packing rings 14 are disposed about the adapter 16 and outside of the rings 14 is a baclc-up v-ring 12 and outside of v-ring 12 is an end ring 10 to complete one half of the mirror image arrangement shown in Figure 1. The open portions of the v-shaped rings open toward the central adapter in an effort to position the rings to withstand pressure differentials from opposite directions. The rings are made of materials suitable for the anticipated temperatures. Tests at pressure extremes of over 13,500 PSI and temperatures above 350 degrees Fahrenheit revealed that this design was unsuitable for reliable service.
[0008] In an effort to improve on the performance of the seal shown in Figure 1, the design of Figure 2 was tried. It featured a central o-ring 18 surrounded by a pair of center adapters 20. On eitlier side of the center adapters 20 the arrangement was similar to Figure 1 except that the orientation of the v-shaped opening were now all away from the central o-ring 18 rather than towards each other as had been the case in the design of Figure 1. Additionally, there was an alteinating pattern of material in the rings 22and 24 of Figure 2 as compared to the stacking of rings 14 of a lilce material as shown in Figure 1. This design of Figure 2 showed improved performance in higll teinperature and pressure conditions but was not to be the final solution. The present invention, an illustrative example of which is discussed in the preferred embodiment below, addresses the temperature and pressure extremes while allowing for insertion using a wireline. It features an internal spring mechanism and a feature that prevents collapse of the spring and the sealing elements under extreme conditions. The opposing members in the assembly are also prevented from engaging each other under extreme conditions. The collapse-preventing feature also has a beneficial aspect of seal centralization as the seal is inserted into the seal bore. Those skilled in the art from a review of the description of the preferred embodiment below and the claims that appear thereafter will readily understand these and other beneficial features of the present invention.
SUMMARY OF THE INVENTION
SUMMARY OF THE INVENTION
[0009] A seal for use in temperature and pressure extremes is disclosed. It features springs internal to the sealing members and the ability to seal against pressure differentials from opposed directions. A spacer ring prevents contact from oppositely oriented seal components and at the same time prevents spring and seal collapse under extreme loading conditions. The seal assembly is self-centering in a downhole seal bore and can be used on tools delivered on wireline, where the insertion forces available are at a minimum. The seal can withstand pressure differentials in excess of 13,500 PSI and temperatures above 350 degrees Fahrenheit.
[0009a] Accordingly, in one aspect of the present invention there is provided a downhole tool seal instertable into a downhole seal bore for sealing therewith, comprising:
a tool body having an exterior surface and uphole and downhole ends;
at least one seal member mounted to said body and comprising opposed legs defining an annularly shaped gap having an outlet oriented toward one of said uphole and downhole ends of said tool body, said legs spanning the gap between said exterior surface of said tool body and the seal bore when inserted therein; and at least one spring in said gap.
[0009b] According to another aspect of the present invention there is provided a downhole tool seal insertable into a downhole seal bore for sealing therewith, comprising:
a tool body having an exterior surface and uphole and downhole ends;
at least one seal member mounted to said body and comprising opposed legs defining an annularly shaped gap having an outlet oriented toward one of said uphole and downhole ends of said tool body, said legs spanning the gap between said exterior surface of said tool body and the seal bore when inserted therein; and a support member extending between said legs, said support member guiding movement of said seal member along said exterior surface and entering further into said gap in response to applied pressure on said legs.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009a] Accordingly, in one aspect of the present invention there is provided a downhole tool seal instertable into a downhole seal bore for sealing therewith, comprising:
a tool body having an exterior surface and uphole and downhole ends;
at least one seal member mounted to said body and comprising opposed legs defining an annularly shaped gap having an outlet oriented toward one of said uphole and downhole ends of said tool body, said legs spanning the gap between said exterior surface of said tool body and the seal bore when inserted therein; and at least one spring in said gap.
[0009b] According to another aspect of the present invention there is provided a downhole tool seal insertable into a downhole seal bore for sealing therewith, comprising:
a tool body having an exterior surface and uphole and downhole ends;
at least one seal member mounted to said body and comprising opposed legs defining an annularly shaped gap having an outlet oriented toward one of said uphole and downhole ends of said tool body, said legs spanning the gap between said exterior surface of said tool body and the seal bore when inserted therein; and a support member extending between said legs, said support member guiding movement of said seal member along said exterior surface and entering further into said gap in response to applied pressure on said legs.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 is a section view of a prior art seal for extreme temperature and pressure conditions;
[0011] Figure 2 is an early version of the present invention developed by the inventors;
[0012] Figure 3 is a section view of the seal of the present invention in a position before extreme temperature and pressure conditions are applied;
[0013] Figure 4 is the view of Figure 3 shown under fully loaded conditions;
and [0014] Figure 5 is a view showing how the seal of the present invention would collapse if the central ring were to be omitted.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
and [0014] Figure 5 is a view showing how the seal of the present invention would collapse if the central ring were to be omitted.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0015] Referring to Figure 3, the seal S of the present invention is shown without the tool that it would be secured to. The seal bore into which the seal S is to be inserted is also omitted on the basis that those skilled in the art are readily familiar with downhole tools and seal bores into which seals such as seal S are inserted. For similar reasons, the surface wireline equipment and the wireline are omitted due to their familiarity to the person skilled in this art. It should be noted that seal S can be used on a subsurface safety valve that can be delivered on wireline. This is only the preferred use and those skilled in the art will recognize that the seal S can be used with a broad variety of tools and delivered downhole in a variety of ways other than a wireline. Seal S is preferably used in applications of sealing in a seal bore downhole under conditions of high pressure and temperature differentials. Seal S can withstand differentials in pressure in either direction in excess of 13,500 PSI and temperatures well in excess of 350 degrees Fahrenheit.
[0016] The components will be described from the downhole end 26 to the uphole end 28. A female adapter 30 has an uphole oriented notch 32, which is preferably v-shaped. Located in notch 32 is a chevron shaped ring 34 with a notch 36 oriented in an uphole direction. Mounted in notch 36 is chevron shaped ring 38 with a notch 40 oriented in an uphole direction. Lower seal 42 sits in notch 40 and has an uphole oriented opening 44 in which is disposed one or more generally u-shaped spring rings such as 46 and 48 that are 3a shown stacked on each other with their respective openings oriented uphole.
Spring rings 46 and 48 are preferably mounted within opening 44 and in an abutting relation.
Inserted into opening 44 and opening 52 of upper seal 54 is ring 50. Ring 50 has a radial component 56 extending toward the downhole tool (not shown). Located preferably within opening 52 are stacked and abutting spring rings 58 and 60, which are preferably identical to spring rings 46 and 48 except that they are disposed in a mirror image relation to them. In fact, the upper portion of the seal S above the ring 50 is the mirror image of the previously described components that are located below ring 50. In the preferred embodiment going uphole or downhole from ring 50 the hardness of the rings going from seal 42 to ring 38 to ring 34 is progressively harder. The same goes for their mirror image counterparts, seal 54, ring 62, ring 64, and female adapter 66. The preferred material for the female adapters 30 and 66 is InconelTM 718. For ring 64 and its counterpart ring 34 the preferred material is virgin polyetheretherketone. For ring 62 and its counterpart ring 38 the preferred material is a PTFE
(TeflonTM) with 20% polyphenylenesulfide and some carbon. The preferred material for the seals 42 and 54 is a PTFE (TeflonTM) flourocarbon base with 15% graphite.
Spring rings 46 and 48 are preferably mounted within opening 44 and in an abutting relation.
Inserted into opening 44 and opening 52 of upper seal 54 is ring 50. Ring 50 has a radial component 56 extending toward the downhole tool (not shown). Located preferably within opening 52 are stacked and abutting spring rings 58 and 60, which are preferably identical to spring rings 46 and 48 except that they are disposed in a mirror image relation to them. In fact, the upper portion of the seal S above the ring 50 is the mirror image of the previously described components that are located below ring 50. In the preferred embodiment going uphole or downhole from ring 50 the hardness of the rings going from seal 42 to ring 38 to ring 34 is progressively harder. The same goes for their mirror image counterparts, seal 54, ring 62, ring 64, and female adapter 66. The preferred material for the female adapters 30 and 66 is InconelTM 718. For ring 64 and its counterpart ring 34 the preferred material is virgin polyetheretherketone. For ring 62 and its counterpart ring 38 the preferred material is a PTFE
(TeflonTM) with 20% polyphenylenesulfide and some carbon. The preferred material for the seals 42 and 54 is a PTFE (TeflonTM) flourocarbon base with 15% graphite.
[0017] Seals 42 and 54 could have one ore more interior 68 or exterior 70 notches to promote sealing contact with the tool (not shown) and the seal bore (not shown) respectively.
These notches promote some flexibility in response to pressure or thermal loads.
These notches promote some flexibility in response to pressure or thermal loads.
[0018] The operation of the seal S under a pressure differential from uphole is illustrated in Figure 4. Arrow 72 represents such pressure from uphole going around seal 52 because its opening 52 is oriented downhole. The wings 74 and 76 flex toward each other responsive to the pressure differential. The seal 52 is moved with respect to ring 50. This movement allows the spring rings 58 and 60 to become more nested and to apply a greater spread force against wings 74 and 76. However, ring 50 also prevents collapse of spring rings 58 and 60 because the described movement has resulted in positioning ring 50 in the openings defines by generally u-shaped spring rings 58 and 60. For that same reason, wings 74 and 76 are prevented from collapse toward each otller. Meanwhile, the pressure represented by arrow 72 enters opening 44 with the result that ring 50 is pushed into spring rings 46 and 48 to not only splay apart the wings 78 and 80 but also to keep such wings from collapsing and permanently deforming due to movement of ring 50 into the openings defined by nested spring rings 46 and 48. Ring 50 pushes the spring rings 46 and 48 into a more nested relation but at the same time, its presence in their openings prevents collapse of not only spring rings 46 and 48 but also of wings 78 and 80 to their immediate exterior. Another benefit of ring 50 is that it is of the appropriate length to prevent wings 74 and 76 from contacting wings 78 and 80 under maxinlum loading conditions. Contact at such high temperatures and pressures could fuse the wings together with a seal failure being a possibility. This is illustrated in Figure 5 where the ring 50 has been eliminated and wings 74 and 76 have contacted wings 78 and 80. The spring rings in Figure 5 have all buckled and are permanently deformed. This seal is likely to be in failure mode.
[0019] Another advantage of having the ring 50 is that upon insertion of the downlzole end of seal S into a seal bore, ring 50 adds some rigidity to that portion of seal S already inserted into the seal bore to act as a centralizer for the reinaining portions of seal S to facilitate its insertion without damage. Radial component 56 also helps in the centralizing function for insertion of seal S into a seal bore (not shown).
[0020] Those skilled in the art will appreciate that while Figure 4 illustrates a pressure differential from uphole that the response of seal S to a differential pressure from downhole is essentially the mirror image of what was described as the situation in Figure 4. The design of seal S is unique in high temperature and pressure service and one such feature is the internal spring component. While spring rings having a generally u-shaped cross-section have been illustrated other cross-sectional shapes for the spring rings are contemplated as long as the response is to splay out the wings while exhibiting resiliency to return to a neutral position when the extreme pressure or temperature conditions are removed. The use of a separation ring to lceep the wings apart and to prevent their collapse and the collapse of the spring rings inside them allows the seal S to withstand cycles of temperature and pressure extremes and continue to be serviceable. The placement of the components in a nesting relation in conjunction with ring 50 a.nd radial component 56 helps to centralize seal S with respect to the downhole tool to which it is mounted as well as to facilitate its insertion into a seal bore.
This is because the downhole end 26, upon entering the seal bore centralizes the seal S so that the rest ot it is simply advanced into the seal bore without damage.
This is because the downhole end 26, upon entering the seal bore centralizes the seal S so that the rest ot it is simply advanced into the seal bore without damage.
[0021) While the seal S is ideal for high pressure and teniperature applications, it caxi also be serviceable in less severe enviromnents and can be delivered into a seal bore by a variety of conveyances such as coiled tubing, rigid pipe as well as wireline, among others. Its construction makes it easily insertable in a wireline application, when minimal force is available get the seal S into the seal bore.
[0022] The foregoing disclosure and description of the invention are illustrative and explanatory tliereof, and various changes in the size, shape and materials, as well as in the details of the illustrated construction, may be made witliout departing from the spirit of the invention.
Claims (20)
1. A downhole tool seal insertable into a downhole seal bore for sealing therewith, comprising:
a tool body having an exterior surface and uphole and downhole ends;
at least one seal member mounted to said body and comprising opposed legs defining an annularly shaped gap having an outlet oriented toward one of said uphole and downhole ends of said tool body, said legs spanning the gap between said exterior surface of said tool body and the seal bore when inserted therein; and at least one spring in said gap.
a tool body having an exterior surface and uphole and downhole ends;
at least one seal member mounted to said body and comprising opposed legs defining an annularly shaped gap having an outlet oriented toward one of said uphole and downhole ends of said tool body, said legs spanning the gap between said exterior surface of said tool body and the seal bore when inserted therein; and at least one spring in said gap.
2. The seal of claim 1, further comprising:
a spring support member extending into said gap and into contact with said spring.
a spring support member extending into said gap and into contact with said spring.
3. The seal of claim 1,wherein:
said spring support member further comprises an extending member toward said exterior surface to position said spring support member in alignment with said gap.
said spring support member further comprises an extending member toward said exterior surface to position said spring support member in alignment with said gap.
4. The seal of claim 1, further comprising:
at least one notch on a portion of at least one of said legs that contacts one of said exterior surface and the seal bore.
at least one notch on a portion of at least one of said legs that contacts one of said exterior surface and the seal bore.
5. The seal of claim 1,wherein:
said spring is defined by opposed spring legs that push on said legs of said seal.
said spring is defined by opposed spring legs that push on said legs of said seal.
6. The seal of claim 5,wherein:
said spring comprises a plurality of stacked springs.
said spring comprises a plurality of stacked springs.
7. The seal of claim 6, further comprising:
a spring support member extending into said gap and into contact with at least one of said springs, said seal movable with respect to said spring support to force at least two of said springs toward nesting within each other.
a spring support member extending into said gap and into contact with at least one of said springs, said seal movable with respect to said spring support to force at least two of said springs toward nesting within each other.
8. The seal of claim 7,wherein:
said spring support member is forced between said spring legs of at least one said spring responsive to pressure applied to said seal member.
said spring support member is forced between said spring legs of at least one said spring responsive to pressure applied to said seal member.
9. The seal of claim 8,wherein:
said spring support member further comprises an extending member toward said exterior surface to position said spring support member in alignment with said gap.
said spring support member further comprises an extending member toward said exterior surface to position said spring support member in alignment with said gap.
10. The seal of claim 1,wherein:
said at least one seal member comprises at least two seal members having gap outlets oriented facing each other and at least one said spring in each said gap.
said at least one seal member comprises at least two seal members having gap outlets oriented facing each other and at least one said spring in each said gap.
11. The seal of claim 10, further comprising:
a support member extending into said gaps to allow oppositely oriented seal members to move toward each other while preventing said legs of one of said seal members from coming into contact with said legs of another oppositely oriented seal member.
a support member extending into said gaps to allow oppositely oriented seal members to move toward each other while preventing said legs of one of said seal members from coming into contact with said legs of another oppositely oriented seal member.
12. The seal of claim 11,wherein:
said springs are defined by opposed spring legs that push on said legs of said seal;
said support member extending between at least one opposed pair of said spring legs.
said springs are defined by opposed spring legs that push on said legs of said seal;
said support member extending between at least one opposed pair of said spring legs.
13. The seal of claim 12,wherein:
said springs comprise a plurality of stacked springs in each said gap;
said support member forcing said stacked springs in each said gap to move toward being further nested in response to movement of said oppositely oriented seals toward each other.
said springs comprise a plurality of stacked springs in each said gap;
said support member forcing said stacked springs in each said gap to move toward being further nested in response to movement of said oppositely oriented seals toward each other.
14. The seal of claim 13,wherein:
said support member further comprises an extending member toward said exterior surface to position said support member in alignment with said oppositely oriented gaps.
said support member further comprises an extending member toward said exterior surface to position said support member in alignment with said oppositely oriented gaps.
15. A downhole tool seal insertable into a downhole seal bore for sealing therewith, comprising:
a tool body having an exterior surface and uphole and downhole ends;
at least one seal member mounted to said body and comprising opposed legs defining an annularly shaped gap having an outlet oriented toward one of said uphole and downhole ends of said tool body, said legs spanning the gap between said exterior surface of said tool body and the seal bore when inserted therein; and a support member extending between said legs, said support member guiding movement of said seal member along said exterior surface and entering further into said gap in response to applied pressure on said legs.
a tool body having an exterior surface and uphole and downhole ends;
at least one seal member mounted to said body and comprising opposed legs defining an annularly shaped gap having an outlet oriented toward one of said uphole and downhole ends of said tool body, said legs spanning the gap between said exterior surface of said tool body and the seal bore when inserted therein; and a support member extending between said legs, said support member guiding movement of said seal member along said exterior surface and entering further into said gap in response to applied pressure on said legs.
16. The seal of claim 15,wherein:
said support member further comprises an extending member toward said exterior surface to position said support member in alignment with said gap.
said support member further comprises an extending member toward said exterior surface to position said support member in alignment with said gap.
17. The seal of claim 16,further comprising:
a plurality of stacked springs in said gap.
a plurality of stacked springs in said gap.
18. The seal of claim 15,wherein:
said at least one seal member comprises at least two seal members having a gap outlets oriented facing each other;
said support member extending into said gaps to allow oppositely oriented seal members to move toward each other while preventing said legs of one of said seal members from coming into contact with said legs of another oppositely oriented seal member.
said at least one seal member comprises at least two seal members having a gap outlets oriented facing each other;
said support member extending into said gaps to allow oppositely oriented seal members to move toward each other while preventing said legs of one of said seal members from coming into contact with said legs of another oppositely oriented seal member.
19. The seal of claim 18,wherein:
said support member further comprises an extending member toward said exterior surface to position said support member in alignment with said gap.
said support member further comprises an extending member toward said exterior surface to position said support member in alignment with said gap.
20. The seal of claim 19,further comprising:
a plurality of stacked springs in each said gap;
said springs are defined by opposed spring legs that push on said legs of said seal;
said support member extending between at least one opposed pair of said spring legs;
said support member forcing said stacked springs in each said gap to move toward being further nested in response to movement of said oppositely oriented seals toward each other.
a plurality of stacked springs in each said gap;
said springs are defined by opposed spring legs that push on said legs of said seal;
said support member extending between at least one opposed pair of said spring legs;
said support member forcing said stacked springs in each said gap to move toward being further nested in response to movement of said oppositely oriented seals toward each other.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US38460102P | 2002-05-30 | 2002-05-30 | |
US60/384,601 | 2002-05-30 | ||
PCT/US2003/015697 WO2003102360A1 (en) | 2002-05-30 | 2003-05-16 | High pressure and temperature seal for downhole use |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2486703A1 CA2486703A1 (en) | 2003-12-11 |
CA2486703C true CA2486703C (en) | 2008-10-07 |
Family
ID=29712065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002486703A Expired - Fee Related CA2486703C (en) | 2002-05-30 | 2003-05-16 | High pressure and temperature seal for downhole use |
Country Status (5)
Country | Link |
---|---|
AU (1) | AU2003243264B2 (en) |
CA (1) | CA2486703C (en) |
GB (1) | GB2405427B (en) |
NO (1) | NO20044955L (en) |
WO (1) | WO2003102360A1 (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
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GB0921634D0 (en) * | 2009-12-10 | 2010-01-27 | Artificial Lift Co Ltd | Seal,assembly and method,particularly for downhole electric cable terminations |
US20130087977A1 (en) | 2011-10-05 | 2013-04-11 | Gary L. Galle | Damage tolerant casing hanger seal |
US9963395B2 (en) | 2013-12-11 | 2018-05-08 | Baker Hughes, A Ge Company, Llc | Methods of making carbon composites |
US9325012B1 (en) | 2014-09-17 | 2016-04-26 | Baker Hughes Incorporated | Carbon composites |
US10315922B2 (en) | 2014-09-29 | 2019-06-11 | Baker Hughes, A Ge Company, Llc | Carbon composites and methods of manufacture |
US10480288B2 (en) | 2014-10-15 | 2019-11-19 | Baker Hughes, A Ge Company, Llc | Articles containing carbon composites and methods of manufacture |
US9962903B2 (en) | 2014-11-13 | 2018-05-08 | Baker Hughes, A Ge Company, Llc | Reinforced composites, methods of manufacture, and articles therefrom |
US9745451B2 (en) | 2014-11-17 | 2017-08-29 | Baker Hughes Incorporated | Swellable compositions, articles formed therefrom, and methods of manufacture thereof |
US11097511B2 (en) | 2014-11-18 | 2021-08-24 | Baker Hughes, A Ge Company, Llc | Methods of forming polymer coatings on metallic substrates |
US9726300B2 (en) | 2014-11-25 | 2017-08-08 | Baker Hughes Incorporated | Self-lubricating flexible carbon composite seal |
US9714709B2 (en) | 2014-11-25 | 2017-07-25 | Baker Hughes Incorporated | Functionally graded articles and methods of manufacture |
US10300627B2 (en) | 2014-11-25 | 2019-05-28 | Baker Hughes, A Ge Company, Llc | Method of forming a flexible carbon composite self-lubricating seal |
US9840887B2 (en) * | 2015-05-13 | 2017-12-12 | Baker Hughes Incorporated | Wear-resistant and self-lubricant bore receptacle packoff tool |
DE112016005723T5 (en) | 2016-02-29 | 2018-09-13 | Halliburton Energy Services, Inc. | Sealing device for high pressure high temperature (HPHT) applications |
US10125274B2 (en) | 2016-05-03 | 2018-11-13 | Baker Hughes, A Ge Company, Llc | Coatings containing carbon composite fillers and methods of manufacture |
US10344559B2 (en) | 2016-05-26 | 2019-07-09 | Baker Hughes, A Ge Company, Llc | High temperature high pressure seal for downhole chemical injection applications |
EP3867491A4 (en) * | 2018-12-19 | 2022-10-12 | Oceaneering International, Inc. | Subsea slip-on pipeline repair connector with graphite packing |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2320589A (en) * | 1941-04-28 | 1943-06-01 | Smith Corp A O | Packing assembly |
US3467394A (en) * | 1965-10-15 | 1969-09-16 | Grove Valve & Regulator Co | Packing means |
US3467694A (en) * | 1965-10-15 | 1969-09-16 | American Cyanamid Co | Process for producing urethanes |
US4281840A (en) * | 1980-04-28 | 1981-08-04 | Halliburton Company | High temperature packer element for well bores |
US4406469A (en) * | 1981-09-21 | 1983-09-27 | Baker International Corporation | Plastically deformable conduit seal for subterranean wells |
US4441721A (en) * | 1982-05-06 | 1984-04-10 | Halliburton Company | High temperature packer with low temperature setting capabilities |
US4588030A (en) * | 1984-09-27 | 1986-05-13 | Camco, Incorporated | Well tool having a metal seal and bi-directional lock |
US4921045A (en) * | 1985-12-06 | 1990-05-01 | Baker Oil Tools, Inc. | Slip retention mechanism for subterranean well packer |
US4697640A (en) * | 1986-01-16 | 1987-10-06 | Halliburton Company | Apparatus for setting a high temperature packer |
US4811959A (en) * | 1987-11-27 | 1989-03-14 | Otis Engineering Corporation | Seal assembly for well locking mandrel |
US5611547A (en) * | 1993-11-04 | 1997-03-18 | Baker Hughes Incorporated | Elongated seal assembly for sealing well tubing-to liner annulus |
-
2003
- 2003-05-16 CA CA002486703A patent/CA2486703C/en not_active Expired - Fee Related
- 2003-05-16 WO PCT/US2003/015697 patent/WO2003102360A1/en not_active Application Discontinuation
- 2003-05-16 GB GB0425473A patent/GB2405427B/en not_active Expired - Fee Related
- 2003-05-16 AU AU2003243264A patent/AU2003243264B2/en not_active Ceased
-
2004
- 2004-11-12 NO NO20044955A patent/NO20044955L/en not_active Application Discontinuation
Also Published As
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AU2003243264A1 (en) | 2003-12-19 |
AU2003243264B2 (en) | 2008-07-03 |
GB0425473D0 (en) | 2004-12-22 |
GB2405427A (en) | 2005-03-02 |
NO20044955L (en) | 2004-12-29 |
WO2003102360A1 (en) | 2003-12-11 |
CA2486703A1 (en) | 2003-12-11 |
GB2405427B (en) | 2006-02-22 |
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EEER | Examination request | ||
MKLA | Lapsed |