AU607962B2 - Creation of Inventions and Patents with Artificial Intelligence

AU607962B2 – Tubing packer
– Google Patents

AU607962B2 – Tubing packer
– Google Patents
Tubing packer

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Publication number
AU607962B2

AU607962B2
AU10345/88A
AU1034588A
AU607962B2
AU 607962 B2
AU607962 B2
AU 607962B2
AU 10345/88 A
AU10345/88 A
AU 10345/88A
AU 1034588 A
AU1034588 A
AU 1034588A
AU 607962 B2
AU607962 B2
AU 607962B2
Authority
AU
Australia
Prior art keywords
sleeve
tubing
packer according
piston
tubing packer
Prior art date
1987-04-30
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.)

Ceased

Application number
AU10345/88A
Other versions

AU1034588A
(en

Inventor
Thomas G. Cassity
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Cooper Industries LLC

Original Assignee
Cameron Iron Works Inc
Priority date (The priority date 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 date listed.)
1987-04-30
Filing date
1988-01-18
Publication date
1991-03-21

1988-01-18
Application filed by Cameron Iron Works Inc
filed
Critical
Cameron Iron Works Inc

1988-11-03
Publication of AU1034588A
publication
Critical
patent/AU1034588A/en

1991-03-21
Application granted
granted
Critical

1991-03-21
Publication of AU607962B2
publication
Critical
patent/AU607962B2/en

2008-01-18
Anticipated expiration
legal-status
Critical

Status
Ceased
legal-status
Critical
Current

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Classifications

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

F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL

F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints

F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling

F16L13/16—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars

F16L13/168—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars for screw threaded pipes

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

E21B33/128—Packers; Plugs with a member expanded radially by axial pressure

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

E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing

E21B33/1295—Packers; Plugs with mechanical slips for hooking into the casing actuated by fluid pressure

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

E21B43/10—Setting of casings, screens, liners or the like in wells

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

F16J—PISTONS; CYLINDERS; SEALINGS

F16J15/00—Sealings

F16J15/02—Sealings between relatively-stationary surfaces

F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces

F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing

F16J15/0881—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing the sealing effect being obtained by plastic deformation of the packing

Abstract

An improved tubing packer 10 includes a sleeve 16 connected in the tubing string 14 and has an outer diameter close to the inner diameter of the string into which it is to seal and a plurality of external grooves 42 having pressure compensating material 43 therein. A liner 20 is located within the sleeve and spaced therefrom and, pressure responsive means 36 are provided between said sleeve and liner. The pressure responsive means and said sleeve have coacting multiple camming surfaces 62, 54 which coact to force the sleeve outward into tight gripping and sealing engagement with the interior of the well string. Means are provided for supplying a pressure fluid to the pressure responsive means.

Description

4
AUSTRALIA
Patents Act 6 07 962 CXWLEE SPECIFICATIN
(ORIGINAL)
Class Int. Class Application Number: Lodged: Complete Specification Lodged: Accepted: Published: Priority Related Art:
Q
00 0 o APPLICANT’S REFERENCE: 4-144(B) CVE-311 Name(s) of Applicant(s): Cameron Iron Works USA Inc.
Address(es) of Applicant(s): IThis document contains jthe Famendments made under Section 49 and is correct for printing 13013 Northwest Freeway, Houston, Texas, UNITED STATES OF AMERICA.
o 0’~ “,,(‘ddrssfor Service is: 0 b PHILLIPS ORMODE FITZPATRICK Patent and Trade Mark Attorneys 367 Collins Street Melbourne 3000 AUSTRALIA o 10 0 0 0 4 ’41CComplete Specification for the invention entitled: TU BINGE PACKER Our Ref 79480 POP Code-. 1048/53122 The following statement is a full description of this invention, including the best method of performing it known to applicant(s): 6003q/1– 1 r:
DESCRIPTION
Background The present invention relates to an improved device which is positioned within a well bore in surrounding relationship to a tubing string to seal across the annulus between the interior of the well casing and the exterior of the tubing string.
Prior tubing packers have included an annular resilient packer which is positioned between shoulders which can be moved toward each other to compress the packer axially so that it expands radially inward and outward into sealing engagement and also includes anchors which :secure the packer structure at a particular So” level in the casing. An example of such a tea packer is shown in U. S. Patent No. 2,387,003.
a ar a Many types of packers have been available. Some a packers are set by movement of the tubing string. Others are set by hydraulic pressure transmitted to the packer.
•aaAnnular wellhead seals have included seals a which seal across the annulus between a housing and a well string. Some of these seal have included seals with legs which are wedged outward toward their respective sealing surfaces as shown in U. S. Patent No. 4,131,287. One seal includes the wedging of the legs into serrations in the sealing surface. This structure is shown in U. S. Patent No. 4,595,053. U.
S. Patent No. 4,550,782 discloses an annular ring seal which is wedged into an annular space which it tapered downwardly and outwardly as is the ring seal.
-2- It has been common practice in the past to use multiple camming surfaces to wedge slips outward into sealing engagement with the interior of the casing into which the slips are to be set. These structures are disclosed in U.S.
Patent Nos. 2,582,700 and 3,311,168.
When a tubular member is formed outwardly in a liquid environment into a cylindrical fitting having inner grooves into which the tubular member is deformed, U.S. Patent No.
4,662,663 discloses the use of collapsible material positioned within the grooves to eliminate the problems with the grooves being filled with water and limiting the forming of the tubular member.
1 Summary ft..
The present invention provides a downhole tubing packer comprising a sleeve having an internal recess a plurality of *ftI *Q external annular grooves, a plurality of lands between said external annular grooves and internal multiple camming surfaces, means closing said internal recess to provide an annular space within said sleeve, a piston movably positioned 20 within said annular space, said piston having external multiple camming surfaces coacting with said internal multiple camming surfaces of said sleeve, and means for delivering fluid under pressure to one end of said annular space for movement of said piston therein, movement of said piston responsive to fluid pressure forcing said sleeve outward into tight sealing and gripping engagement with the interior surface of a string against which it is to seal with the lands between the sleeve grooves digging into such interior surface.
The present invention also provides a tubing hanger comprising an outer sleeve having a plurality of external annular grooves, multiple internal camming surfaces and an axially extending internal recess, a liner positioned within said sleeve, means coacting with said sleeve and said liner forming an annular space within said liner, a piston movably positioned within said annular space and having external multiple camming surfaces to coact with the sleeve camming surfaces, and means for delivering fluid under pressure to 39 said annular space to move said piston axially therein, axial 3 -_ilii -~-IClilY II-IY- movement of said piston camming said sleeve outwardly with sufficient force to create a positive gripping and sealing engagement with a surface surrounding the exterior of said sleeve.
An object of the present invention is to provide an improved downhole tubing packer which provides a metal-to-metal seal against the interior of the casing.
Another object is to provide an improved tubing packer which provides both sealing and gripping engagement with the casing.
5339i rrrt t 4 t t 1 0 t o 9 sro, a 0 3A It has been common practice in the past to use multiple camming surfaces to wedge slips outward into sealing engagement with the interior of the casing into which the slips are to be set. These structures are disclosed in U. S.
Patent Nos. 2,582,700 and 3,311,168.
When a tubular member is formed outwardly in a liquid environment into a cylindrical fitting having inner grooves into which the tubular member is deformed, U. S. Patent No. 4,662,663 discloses the use of collapsible material positioned within the grooves to eliminate the problems with the grooves being filled with water and limiting the forming of the tubular member.
Summary 04 e 0 o The improved tubing packer of the present oinvention includes a sleeve connected in the tubing st;ig and having an outer diameter close a044 to the inner diameter of the casing string into which is it to seal and a plurality of external grooves having pressure compensating material oo 4 therein, a liner within the sleeve and spaced o 4 therefrom, pressure responsive means between 0 asaid sleeve and said liner, the pressure responsive means coacting with the sleeve to force the sleeve outward into tight sealing engagement with the interior of the casing and means for supplying a pressure fluid to the pressure responsive means.
An object of the present invention is to provide an improved downhole tubing packer which provides a metal-to-metal seal against the interior of the casing.
Another object is to provide an improved tubing packer which provides both sealing and gripping engagement with the casing.
-3i i~’ 010 0* 0 0e *0*0 oes $O 0$ 0 0 40 0
O
IQ O 1 Brief Description of the Drawings These and other objects and advantages of the present invention are hereinafter set forth and explained with reference to the drawings wherein: FIGURE 1 is a partial sectional view of the improved packer positioned within a well bore at the level at which it is to be set against the interior of the casing.
FIGURE 2 is a partial sectional view of the improved packer set into sealing engagement with the interior of the casing.
FIGURE 3 is an enlarged detail sectional view of two of the grooves and the land between the groove and showing its engagement with the interior of the casing.
Description of the Preferred Embodiment As shown in FIGURE 1, improved sealing packer 10 of the present invention is shown positioned within well string 12 at the level at which it is to be set. Sealing packer 10 is run into the well on tubing string 14 which threads into upward facing flange 15 of sleeve 16.
Sleeve 16 includes internal annular recess 18 and liner 20 is positioned between upper downwardly facing inner shoulder 22 in the interior of flange 15 and lower upwardly facing shoulder 24 on the closure ring 26 which is threaded into the lower end of sleeve 16. Tubing string 28 below sealing packer 10 is threaded into the interior of closure ring 26. Annular space is formed between the exterior of liner 20 and the interior of sleeve 16 below shoulder 32 at the upper end of recess 18 and the upper surface of closure ring 26. Port 34 extending through the lower portion of liner 20 to provide communication into the lower portion of annular space -4- Annular piston 36 is positioned within annular space 30 and includes inner and outer seals 38 and 40 for sealing against the interior of the lower portion of sleeve 16 and against the exterior of liner 20. The upper end of liner 20 is sealed to flange 15 by O ring 21 and the lower end is sealed to closure ring 26 by O ring 23.
The exterior surface of sleeve 16 includes a plurality of grooves 42 which are at least partially filled with pressure compensating material 43, such as microspheres in an epoxy matrix or in syntatic form. Lands 44 between grooves 42 are best seen in FIGURE 3 wherein it is shown that lands 44 have a pair of shallow grooves 46 which provide upper annular sharp peak 48, lower annular sharp peak 50 and intermediate annular peak 52. The inner surface of :0 sleeve 16 includes multiple inner camming t 20 surfaces 54 in the area of sleeve 16 within the coo 0 area of grooves 42 on the exterior of sleeve 16.
000000 *0 Surface 56 immediately above closure ring 26 is smooth to allow sealing of outer seal 40. Ports 58 extend through sleeve 16 at a level above the highest level of seal 40 and is provided to communicate with groove 60 in the lower outer surface of piston 36 to provide for pressure equalization which is needed responsive to the movement of piston 36 to ensure that its movement is not impeded by a pressure lock. Piston 36 includes external multiple outer camming surfaces 62 which mate with camming surfaces 54 on the interior of sleeve 16.
Setting of sealing packer 10 is accomplished by pressuring tubing string 14 so that fluid under pressure flows through ports 34 and into annular space 30 below piston 36. The pressure under piston 36 forces it upwardly causing camming surfaces 54 and 62 to coact forcing sleeve 16 outward into tight gripping and sealing engagement with the interior of well string 12 to create a positive metal-to-metal seal and also an anchoring of sealing packer to well string 12. The engagement of sleeve 16 with the interior of well string 12 is clearly shown in FIGURE 3. As can be seen from the drawing, sharp peaks 48, 50 and 52 of lands 44 actually deform the interior surface of well string 12 by digging therein as shown in the drawing.
With sealing packer 10 set as described above, the relieving of pressure supplied to annular space 30 does not cause the downward movement of piston 36 since it has moved sufficiently far so that its outer cylindrical surfaces 64 are engaged by inner cylindrical S:9″ osurfaces 66 of sleeve 16 so that there no 0 tapered surfaces in the camming surfaces in 4000 s engagement between piston 36 and sleeve 16 which rOQOa might cause any reversing forces on piston 36.
Thus, improved sealing packer 10 is set into 0oO tight gripping and sealing metal-to-metal *o engagement with the wall of well string 12 within which it is positioned.
0 a

Claims (9)

3. A tubing packer according to claim 2 wherein said pressure compensating material being microspheres in a suitable matrix. 4

4. A tubing packer according to claim 3j wherein said matrix is an epoxy.j A tubing packer according to claim 3 wherein said matrix is a syntatic foam.

6. A tubing packer according to/ 4.o wherein the lands between said sleeve grooves include sharp projections to dig into the interior surface.

7. A tubing packer according tc- ,oa wherein the exterior surface of the lands RA between said sleeve grooves include an shallow I7 -e rA e upper annular groove and a lower shallow annular groove. 1 C:%f\I One

8. A tubing packer according to kclaims ioo7 including a string connected to the upper end of said sleeve, and a port extending from the interior of the means closing said recess into said annular space, and said means supplying fluid pressure is through said string and said port. l

9. A tubing packer according to/claimslo wherein said camming surfaces on said sleeve and said piston include the cam surfaces which taper with respect to the axes of said sleeve and piston and are alternated with inner and outer cylindrical surfaces. A tubing hanger comprising an outer a sleeve having a plurality of external annular grooves, multiple internal camming surfaces and 8 an axially extending internal recess, a liner positioned within said sleeve, means coacting with said sleeve and said liner forming an annular space within said liner, a piston movably positioned within said annular space and having external multiple camming surfaces to coact with the sleeve camming surfaces, and means for delivering fluid under pressure to said annular space to move said piston axially therein, axial movement of said piston camming said sleeve outwardly with sufficient force to create a positive gripping and sealing engage- ment with a surface surrounding the exterior of said sleeve. sA tweli packer comprising an out e sleeve having external means for inn tiht gripping and seal ing er ent with a surround ing rsurfac pressure responsive means for Stng said eouter sleeve outwardly with °upian -8-

11. A tubing packer according to claim 1 substantially as herein described with reference to the accompanying drawings.

12. A tubing packer according to claim 1 substantially as herein described with reference to the accompanying drawings.

13. A tubing hanger according to claim 10 substantially as herein described with reference to the accompanying drawings. DATED: 15 November, 1990. PHILLIPS ORMONDE FITZPATRICK ATTORNEYS FOR:- CAMERON IRON WORKS USA, INC. 5339i SI t 9t Sii t 9

AU10345/88A
1987-04-30
1988-01-18
Tubing packer

Ceased

AU607962B2
(en)

Applications Claiming Priority (2)

Application Number
Priority Date
Filing Date
Title

US07/044,414

US4749035A
(en)

1987-04-30
1987-04-30
Tubing packer

US044414

1987-04-30

Publications (2)

Publication Number
Publication Date

AU1034588A

AU1034588A
(en)

1988-11-03

AU607962B2
true

AU607962B2
(en)

1991-03-21

Family
ID=21932263
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

AU10345/88A
Ceased

AU607962B2
(en)

1987-04-30
1988-01-18
Tubing packer

Country Status (10)

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Link

US
(1)

US4749035A
(en)

EP
(1)

EP0290114B1
(en)

JP
(1)

JPS63272894A
(en)

AT
(1)

ATE83836T1
(en)

AU
(1)

AU607962B2
(en)

BR
(1)

BR8802088A
(en)

CA
(1)

CA1289467C
(en)

DE
(1)

DE3876845T2
(en)

NO
(1)

NO881878L
(en)

SG
(1)

SG69493G
(en)

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1987-04-30
US
US07/044,414
patent/US4749035A/en
not_active
Expired – Fee Related

1988

1988-01-11
AT
AT88300171T
patent/ATE83836T1/en
not_active
IP Right Cessation

1988-01-11
DE
DE8888300171T
patent/DE3876845T2/en
not_active
Expired – Fee Related

1988-01-11
EP
EP88300171A
patent/EP0290114B1/en
not_active
Expired – Lifetime

1988-01-13
CA
CA000556386A
patent/CA1289467C/en
not_active
Expired – Fee Related

1988-01-18
AU
AU10345/88A
patent/AU607962B2/en
not_active
Ceased

1988-01-22
JP
JP63012457A
patent/JPS63272894A/en
active
Pending

1988-04-29
BR
BR8802088A
patent/BR8802088A/en
not_active
IP Right Cessation

1988-04-29
NO
NO881878A
patent/NO881878L/en
unknown

1993

1993-05-28
SG
SG694/93A
patent/SG69493G/en
unknown

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Publication number
Priority date
Publication date
Assignee
Title

US4749035A
(en)

1987-04-30
1988-06-07
Cameron Iron Works Usa, Inc.
Tubing packer

Also Published As

Publication number
Publication date

EP0290114B1
(en)

1992-12-23

CA1289467C
(en)

1991-09-24

ATE83836T1
(en)

1993-01-15

BR8802088A
(en)

1988-11-29

EP0290114A3
(en)

1989-08-23

DE3876845D1
(en)

1993-02-04

DE3876845T2
(en)

1993-04-29

SG69493G
(en)

1993-08-06

NO881878D0
(en)

1988-04-29

AU1034588A
(en)

1988-11-03

JPS63272894A
(en)

1988-11-10

NO881878L
(en)

1988-10-31

EP0290114A2
(en)

1988-11-09

US4749035A
(en)

1988-06-07

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