US4715443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baffle system for conducting well treating operations
Assignee: ExxonMobil Upstream Research Co
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Filing: 1986-12-04
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Granted: 1987-12-29
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Expires: 2006-12-04
Abstract
Abstract A coiled baffle system, primarily for conducting well treating operations, is disclosed. The baffle system preferably comprises a baffle which is inserted into a tubing within a well bore to segment the tubing into a high pressure conduit and a low pressure conduit. The baffle system of the present invention may also be provided with electrical conductors for attachment to a variety of subsurface tools or sensors.
Inventors
- 👤 John L. Gidley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:12
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/20; E21B17/203; E21B17/206; E21B43/00; E21B43/11; E21B43/119; E21B43/1195; E21B43/25; E21B47/00; E21B49/00; E21B49/008; F; F16; F16L; F16L9/00; F16L9/18
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
96 words
A baffle system for segmenting a tubular member into a first conduit and a second conduit, said baffle system capable of withstanding a pressure differential between said first conduit and said second conduit, comprising: a core positionably insertable into said tubular member substantially coaxial with said tubular member to segment said tubular member into a first conduit and a second conduit; a sleeve surrounding said core; and sealing means extending from said sleeve to be engageable with the inner surface of said tubular member for forming a seal between said first conduit and said second conduit.
Claim 2
Dependent Claim
96 words
A baffle system for segmenting a tubular member into a first conduit and a second conduit, said baffle system capable of withstanding a pressure differential between said first conduit and said second conduit, comprising: a core positionably insertable into said tubular member substantially coaxial with said tubular member to segment said tubular member into a first conduit and a second conduit; a sleeve surrounding said core; and sealing means extending from said sleeve to be engageable with the inner surface of said tubular member for forming a seal between said first conduit and said second conduit.
Claim 3
Dependent Claim
93 words
A baffle system for segmenting tubing in a well bore into a first conduit and a second conduit, said baffle system capable of withstanding a pressure differential between said first conduit and said second conduit, comprising: a core positioned substantially coaxial with said tubing in said well bore to segment said tubing into a first conduit and a second conduit; a sleeve surrounding said core; sealing means extending from said sleeve to be engageable with the inner surface of said tubing for forming a seal between said first conduit and said second conduit.
Claim 4
Dependent Claim
93 words
A baffle system for segmenting tubing in a well bore into a first conduit and a second conduit, said baffle system capable of withstanding a pressure differential between said first conduit and said second conduit, comprising: a core positioned substantially coaxial with said tubing in said well bore to segment said tubing into a first conduit and a second conduit; a sleeve surrounding said core; sealing means extending from said sleeve to be engageable with the inner surface of said tubing for forming a seal between said first conduit and said second conduit.
Claim 5
Dependent Claim
22 words
The baffle system of claim 2 wherein said core is sufficiently flexible to be inserted into said well bore from a spool.
Claim 6
Dependent Claim
11 words
The baffle system of claim 2 wherein said core comprises steel.
Claim 7
Dependent Claim
14 words
The baffle system of claim 2 wherein said sleeve comprises a deformable elastomer material.
Claim 8
Dependent Claim
15 words
The baffle system of claim 2 further comprising an electrical conductor attached to said sleeve.
Claim 9
Dependent Claim
18 words
The baffle system of claim 2 further comprising an electrical conductor interposed between said sleeve and said core.
Claim 10
Dependent Claim
15 words
The baffle system of claim 2 further comprising an electrical conductor located within said core.
Claim 11
Dependent Claim
24 words
The baffle system of claim 2 wherein said sealing means is substantially integral with a first end and a second end of said sleeve.
Claim 12
Dependent Claim
12 words
The baffle system of claim 2 wherein said core includes support ribs.
Claim 13
Dependent Claim
35 words
The baffle system of claim 2 where said sealing means comprises a first deformable ovular extension and a second deformable ovular extension which extend from a first end and a second end of said sleeve.
Claim 14
Dependent Claim
16 words
The baffle system of claim 2 wherein a data gathering tool is attached to said baffle.
Claim 15
Independent Claim
147 words
An apparatus for conducting well treating operations in a tubing within a well bore, comprising: a spool; a baffle which is sufficiently flexible to be coiled and uncoiled about said spool and which is positionably insertable into said tubing substantially coaxial with said tubing to segment said tubing into a first conduit and a second conduit, said baffle comprising a core, a sleeve surrounding said core, and sealing means extending from said sleeve to be engageable with the inner surface of said tubing; and a fluid injector located outside said well bore for injecting a fluid into said tubing within said first conduit at a pressure sufficient for said sealing means to engage an inner surface of said tubing to form a seal between said first conduit and said second conduit and for resident well bore fluids to be forced from said tubing through said second conduit.
Claim 16
Independent Claim
147 words
An apparatus for conducting well treating operations in a tubing within a well bore, comprising: a spool; a baffle which is sufficiently flexible to be coiled and uncoiled about said spool and which is positionably insertable into said tubing substantially coaxial with said tubing to segment said tubing into a first conduit and a second conduit, said baffle comprising a core, a sleeve surrounding said core, and sealing means extending from said sleeve to be engageable with the inner surface of said tubing; and a fluid injector located outside said well bore for injecting a fluid into said tubing within said first conduit at a pressure sufficient for said sealing means to engage an inner surface of said tubing to form a seal between said first conduit and said second conduit and for resident well bore fluids to be forced from said tubing through said second conduit.
Claim 17
Dependent Claim
11 words
The apparatus of claim 13 wherein said baffle core comprises steel.
Claim 18
Dependent Claim
14 words
The apparatus of claim 13 wherein said baffle sleeve comprises a deformable elastomer material.
Claim 19
Dependent Claim
15 words
The apparatus of claim 13 further comprising an electrical conductor attached to said baffle sleeve.
Claim 20
Dependent Claim
19 words
The apparatus of claim 13 further comprising an electrical conductor interposed between said baffle sleeve and said baffle core.
Claim 21
Dependent Claim
14 words
The apparatus of claim 13 further comprising an electrical conductor located within said core.
Claim 22
Dependent Claim
23 words
The apparatus of claim 13 wherein said sealing means is substantially integral with a first end and a second end of said sleeve.
Claim 23
Dependent Claim
11 words
The apparatus of claim 13 wherein said core includes support ribs.
Claim 24
Dependent Claim
35 words
The baffle system of claim 13 wherein said sealing means comprises a first deformable ovular extension and a second deformable ovular extension which extend from a first end and a second end of said sleeve.
Claim 25
Dependent Claim
16 words
The baffle system of claim 13 wherein a data gathering tool is attached to said baffle.
Claim 26
Dependent Claim
15 words
The baffle system of claim 13 wherein a perforating tool is attached to said baffle.
Claim 27
Independent Claim
108 words
A method for segmenting tubing in a well bore, comprising the steps of: positionably inserting a baffle into said tubing so said baffle is substantially coaxial with said tubing to segment said tubing into a first conduit and a second conduit, said baffle comprising a core, a sleeve surrounding said core, and sealing means extending from said sleeve to be engageable with the inner surface of said tubing; and injecting a fluid into said first conduit at a sufficient pressure so that said sealing means of said baffle contacts the inner surface of said tubing to form a fluid seal between said first conduit and said second conduit.
Claim 28
Independent Claim
108 words
A method for segmenting tubing in a well bore, comprising the steps of: positionably inserting a baffle into said tubing so said baffle is substantially coaxial with said tubing to segment said tubing into a first conduit and a second conduit, said baffle comprising a core, a sleeve surrounding said core, and sealing means extending from said sleeve to be engageable with the inner surface of said tubing; and injecting a fluid into said first conduit at a sufficient pressure so that said sealing means of said baffle contacts the inner surface of said tubing to form a fluid seal between said first conduit and said second conduit.
Claim 29
Independent Claim
123 words
A method for conducting well treating operations in a well bore, comprising the steps of: uncoiling a baffle from a spool to positionably insert said baffle into a tubing within said well bore so said baffle is substantially coaxial with said tubing to segment said tubing into a first conduit and a second conduit, said baffle comprising a core, a sleeve surrounding said core, and sealing means extending from said sleeve to be engageable with the inner surface of said tubing; and injecting a well treatment fluid into said first conduit at a sufficient pressure so that said sealing means of said baffle contacts the inner surface of said tubing to form a fluid seal between said first conduit and said second conduit.
Claim 30
Independent Claim
123 words
A method for conducting well treating operations in a well bore, comprising the steps of: uncoiling a baffle from a spool to positionably insert said baffle into a tubing within said well bore so said baffle is substantially coaxial with said tubing to segment said tubing into a first conduit and a second conduit, said baffle comprising a core, a sleeve surrounding said core, and sealing means extending from said sleeve to be engageable with the inner surface of said tubing; and injecting a well treatment fluid into said first conduit at a sufficient pressure so that said sealing means of said baffle contacts the inner surface of said tubing to form a fluid seal between said first conduit and said second conduit.
Claim 31
Dependent Claim
41 words
The method of claim 25 wherein said well treatment fluid is injected at a sufficient pressure so that a quantity of fluid present in the well bore prior to injection of said well treating fluid is forced into said second conduit.
Claim 32
Dependent Claim
31 words
The method of claim 26 further comprising the step of removing by said second conduit the said quantity of fluids present in the well bore prior to said well treating operations.
Claim 33
Dependent Claim
25 words
The method of claim 25 further comprising the step of gathering data from said well bore with a data gathering tool attached to said baffle.
Claim 34
Dependent Claim
21 words
The method of claim 25 further comprising the step of perforating said tubing with a perforating tool attached to said baffle.
Claim 35
Dependent Claim
11 words
The method of claim 25 wherein said baffle core comprises steel.
Claim 36
Dependent Claim
14 words
The method of claim 25 wherein said baffle sleeve comprises a deformable elastomer material.
Claim 37
Dependent Claim
17 words
The method of claim 25 wherein said baffle further comprises an electrical conductor attached to said sleeve.
Claim 38
Dependent Claim
20 words
The method of claim 25 wherein said baffle further comprises an electrical conductor interposed between said sleeve and said core.
Claim 39
Dependent Claim
17 words
The method of claim 25 wherein said baffle further comprises an electrical conductor located within said core.
Claim 40
Dependent Claim
23 words
The method of claim 25 wherein said sealing means is substantially integral with a first end and a second end of said sleeve.
Claim 41
Dependent Claim
11 words
The method of claim 25 wherein said core includes support ribs.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-28 | 1991-06-29 | 1991-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-28 | 1995-06-29 | 1995-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-28 | 1999-06-29 | 1999-12-29 | $7700.00 | Window Closed / Lapsed |