US4416330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Side pocket mandrel
Assignee: Halliburton Co
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Filing: 1982-02-19
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Granted: 1983-11-22
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Expires: 2002-02-19
Abstract
Abstract A high-strength side pocket mandrel for high pressure service having a full-opening bore throughout its length but having a bore of keyhole shape above its receptacle bore to provide minimal but ample space for operation of a kickover tool for installing devices in the receptacle bore and providing strengthened walls for withstanding greater forces which would tend to burst or collapse the mandrel.
Inventors
- 👤 David T. Merritt
- 👤 David W. Fish
- 👤 Olen R. Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:36
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/03
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
213 words
A side pocket mandrel, comprising: a. a one-piece main body section having i. a main bore therethrough, ii. a receptacle bore alongside said main bore, iii. port means communicating said receptacle bore with the exterior of said main body section, and iv. means on its lower end for attachment to a well tubing string; and b. an upper body section welded to the upper end of said main body section by a circumferential weld, said upper body section having i. connecting means at its upper end providing a reduced diameter portion adapted for connecting the upper body section to a well tubing string, ii. a main passage through said upper body section including said connecting means in alignment with the main bore of said main body section, and iii. a longitudinal groove in the inner wall of said main passage extending upwardly from said receptacle bore substantially to said upper reduced diameter portion and providing space above said receptacle bore for operation of a kickover tool for inserting a flow control device therein, the upper body wall, surrounding said main bore and said groove, being thicker on either side of said groove and tapering in thickness toward opposed locations on a transverse plane where the axis of symmetry passes through the wall section.
Claim 2
Dependent Claim
213 words
A side pocket mandrel, comprising: a. a one-piece main body section having i. a main bore therethrough, ii. a receptacle bore alongside said main bore, iii. port means communicating said receptacle bore with the exterior of said main body section, and iv. means on its lower end for attachment to a well tubing string; and b. an upper body section welded to the upper end of said main body section by a circumferential weld, said upper body section having i. connecting means at its upper end providing a reduced diameter portion adapted for connecting the upper body section to a well tubing string, ii. a main passage through said upper body section including said connecting means in alignment with the main bore of said main body section, and iii. a longitudinal groove in the inner wall of said main passage extending upwardly from said receptacle bore substantially to said upper reduced diameter portion and providing space above said receptacle bore for operation of a kickover tool for inserting a flow control device therein, the upper body wall, surrounding said main bore and said groove, being thicker on either side of said groove and tapering in thickness toward opposed locations on a transverse plane where the axis of symmetry passes through the wall section.
Claim 3
Dependent Claim
70 words
The side pocket mandrel of claim 1 wherein said upper body section comprises: a. a one-piece tubular member of uniform cross section; and b. an upper end piece welded to the upper end of said tubular member by a circumferential weld and having a reduced upper end portion having a bore aligned with said main passage and having means at its upper end for attachment to a well tubing string.
Claim 4
Dependent Claim
25 words
The side pocket mandrel of claim 2 wherein said groove is at least as wide as said receptacle bore but narrower than said main passage.
Claim 5
Dependent Claim
22 words
The side pocket mandrel of claim 3 wherein the opposite walls of said groove are flat and are parallel to each other.
Claim 6
Dependent Claim
16 words
The side pocket mandrel of claim 4 wherein the width of said groove approximates its depth.
Claim 7
Dependent Claim
18 words
The side pocket mandrel of claim 4 wherein said groove is formed with its depth exceeding its width.
Claim 8
Dependent Claim
17 words
The side pocket mandrel of claim 3 wherein said groove is formed with its bottom surface concave.
Claim 9
Dependent Claim
46 words
The side pocket mandrel of claim 1, 2, 3, 4, 5, 6 or 7, including: orienting means in said mandrel above said groove and engageable by a kickover tool for orienting said kickover tool relative to said receptacle bore for inserting a flow control device therein.
Claim 10
Dependent Claim
73 words
The side pocket mandrel of claim 1, 2, 3, 4, 5, 6 or 7, including: a. orienting means in said mandrel below the upper end of said receptacle bore and engageable by a kickover tool to orient said kickover tool relative to said receptacle bore for inserting a flow control device therein; and b. shoulder means in said mandrel above said groove and engageable by a kickover tool for activating said kickover tool.
References Cited (Backward Citations)
US2824525A
Cited
US4271902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |