US4083408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well completion apparatus
Assignee: Baker Hughes Holdings LLC
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Filing: 1976-12-27
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Granted: 1978-04-11
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Expires: 1996-12-27
Abstract
Abstract Well completion apparatus for disposition in a well conduit comprising first and second seal assemblies. The first seal assembly comprises a first cylindrical receptacle member fixed with respect to the well conduit and a first insert member including a first tubular body portion received within the first receptacle member. One of the first members includes a first annular seal coaxial with and sealingly engaged between the first receptacle member and the first tubular body portion. The second seal assembly comprises a second cylindrical receptacle member rigidly adjoining the first tubular body portion and a second insert member including a second tubular body portion received within the second receptacle member. One of the second members includes a second annular seal means coaxial with and sealingly engaged between the second receptacle member and the second tubular body portion. The second insert member is longitudinally slidable within the second receptacle member and its outer diameter adjacent the second seal is less than the outer diameter of the first insert member adjacent the first seal.
Inventors
- 👤 Jack J. Milam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:47
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B43/00; E21B43/02; E21B43/10
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
125 words
Well completion apparatus for disposition in a well conduit to seal between a well liner and a well string extending into said well liner, said well completion apparatus comprising: a. a first seal assembly comprising: 1. a first tubular receptacle member rigidly adjoining said well liner and fixed with respect to said well conduit; and 2. a first insert member including a first tubular body portion received within said first receptacle member; 3. one of said first members defining a first cylindrical sealing surface and the other of said first members including first annular seal means coaxial with and slidably sealingly engaged with said first sealing surface between said first receptacle member and said first tubular body portion; and b. a second seal assembly comprising:
Claim 2
Dependent Claim
125 words
Well completion apparatus for disposition in a well conduit to seal between a well liner and a well string extending into said well liner, said well completion apparatus comprising: a. a first seal assembly comprising: 1. a first tubular receptacle member rigidly adjoining said well liner and fixed with respect to said well conduit; and 2. a first insert member including a first tubular body portion received within said first receptacle member; 3. one of said first members defining a first cylindrical sealing surface and the other of said first members including first annular seal means coaxial with and slidably sealingly engaged with said first sealing surface between said first receptacle member and said first tubular body portion; and b. a second seal assembly comprising:
Claim 3
Dependent Claim
121 words
a second tubular receptacle member rigidly adjoining said first tubular body portion; and 2. a second insert member included in said well string and including a second tubular body portion received within said second receptacle member; 3. one of said second members defining a second cylindrical sealing surface, and the other of said second members including second annular seal means coaxial with and slidably sealingly engaged with said second sealing surface between said second receptacle member and said second tubular body portion; and 4. said second insert member being longitudinally slidable within said second receptacle member and having an outer diameter adjacent said second seal means less than the outer diameter of said first insert member adjacent said first seal means.
Claim 4
Dependent Claim
121 words
a second tubular receptacle member rigidly adjoining said first tubular body portion; and 2. a second insert member included in said well string and including a second tubular body portion received within said second receptacle member; 3. one of said second members defining a second cylindrical sealing surface, and the other of said second members including second annular seal means coaxial with and slidably sealingly engaged with said second sealing surface between said second receptacle member and said second tubular body portion; and 4. said second insert member being longitudinally slidable within said second receptacle member and having an outer diameter adjacent said second seal means less than the outer diameter of said first insert member adjacent said first seal means.
Claim 5
Dependent Claim
67 words
The apparatus of claim 1 wherein said first seal means is carried by said first tubular body portion and is slidable within said first receptacle member, wherein said second seal means is carried by said second tubular portion and is slidable within said second receptacle member, and wherein the outer diameter of said second seal means is less than the outer diameter of said first seal means.
Claim 6
Dependent Claim
40 words
The apparatus of claim 2 further comprising a guide sleeve longitudinally adjacent said first receptacle member and at least partially of greater inner diameter than said first receptacle member for guiding said first insert member into said first receptacle member.
Claim 7
Dependent Claim
15 words
The apparatus of claim 2 wherein said first and second receptacles are polished bore receptacles.
Claim 8
Dependent Claim
24 words
The apparatus of claim 4 wherein said first and second receptacles are lined with friction reducing material defining said first and second sealing surfaces.
Claim 9
Dependent Claim
23 words
The apparatus of claim 4 wherein said first and second seal means are static seal means capable of sealing without gross deformation thereof.
Claim 10
Dependent Claim
26 words
The apparatus of claim 2 wherein the longitudinal extent of said second receptacle member is substantially greater than the longitudinal extent of said second seal means.
Claim 11
Dependent Claim
28 words
The apparatus of claim 7 further comprising first anchor means operative to fix said second receptacle member and said first insert member with respect to said well conduit.
Claim 12
Dependent Claim
63 words
The apparatus of claim 8 wherein said second receptacle member is disposed longitudinally adjacent said first insert member, wherein the inner diameter of said second receptacle member is greater than the inner diameter of said first tubular body portion, and wherein the inner diameter of said second tubular body portion is approximately equal to the inner diameter of said first tubular body portion.
Claim 13
Dependent Claim
13 words
The apparatus of claim 8 wherein said well string comprises a tubing string.
Claim 14
Dependent Claim
18 words
The apparatus of claim 8 wherein said first receptacle member comprises a rigid extension of said well liner.
Claim 15
Dependent Claim
27 words
The apparatus of claim 11 further comprising second anchor means operative to fix said first receptacle member and said well liner with respect to said well conduit.
Claim 16
Dependent Claim
15 words
The apparatus of claim 12 wherein said well liner is cemented to said well conduit.
Claim 17
Independent Claim
175 words
A method of sealing between a well liner and a well string extending into said well liner comprising the steps of: a. providing a first tubular receptacle member rigidly adjoining said well liner and securing said first receptacle member within a well conduit; b. inserting a first insert member including a first tubular body portion into said first receptacle member whereby first annular seal means included on one of said first members slidably sealingly engages a first cylindrical sealing surface on the other of said first members between said first receptacle member and said first tubular body portion; and c. inserting a second insert member, included in said well string and including a second tubular body portion, into a second receptacle member rigidly adjoining said first insert member whereby second annular seal means included on one of said second members slidably sealingly engages a second cylindrical sealing surface on the other of said second members between said second receptacle member and said second tubular body portion to provide a sliding seal between said second members.
Claim 18
Independent Claim
175 words
A method of sealing between a well liner and a well string extending into said well liner comprising the steps of: a. providing a first tubular receptacle member rigidly adjoining said well liner and securing said first receptacle member within a well conduit; b. inserting a first insert member including a first tubular body portion into said first receptacle member whereby first annular seal means included on one of said first members slidably sealingly engages a first cylindrical sealing surface on the other of said first members between said first receptacle member and said first tubular body portion; and c. inserting a second insert member, included in said well string and including a second tubular body portion, into a second receptacle member rigidly adjoining said first insert member whereby second annular seal means included on one of said second members slidably sealingly engages a second cylindrical sealing surface on the other of said second members between said second receptacle member and said second tubular body portion to provide a sliding seal between said second members.
Claim 19
Dependent Claim
18 words
The method of claim 14 wherein step (a) includes anchoring said first receptacle member to said well conduit.
Claim 20
Dependent Claim
19 words
The method of claim 15 wherein step (a) further includes cementing said first receptacle member to said well conduit.
Claim 21
Dependent Claim
23 words
The method of claim 14 wherein step (c) is preceded by the step of anchoring said second receptacle member to said well conduit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |