US5113935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gravel packing of wells
Assignee: Mobil Oil AS
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Filing: 1991-05-01
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Granted: 1992-05-19
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Expires: 2011-05-01
Abstract
Abstract Apparatus for gravel packing a wellbore interval having shunt means (i.e. conduits) on the external surface of a sand screen which can selectively deliver a gravel slurry to different levels of the interval during operation. The shunt means is comprised of a variety of differently configured, perforated conduits and/or arrangements of these conduits.
Inventors
- 👤 Lloyd G. Jones
- 👤 Charles S. Yeh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:52
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/08; E21B43/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
60 words
Apparatus for gravel packing an interval of a wellbore, said apparatus comprising: a sand screen adapted to be connected to the lower end of a workstring; and shunt means on the external surface of said sand screen for selectively delivering a gravel slurry to different levels of said interval when said apparatus is in an operable position within said wellbore.
Claim 2
Dependent Claim
60 words
Apparatus for gravel packing an interval of a wellbore, said apparatus comprising: a sand screen adapted to be connected to the lower end of a workstring; and shunt means on the external surface of said sand screen for selectively delivering a gravel slurry to different levels of said interval when said apparatus is in an operable position within said wellbore.
Claim 3
Dependent Claim
35 words
The apparatus of claim 1 wherein said shunt means comprises: a plurality of perforated conduits extending longitudinally along said external surface of said screen, at least one of said conduits being shorter than the others.
Claim 4
Dependent Claim
49 words
The apparatus of claim 1 wherein said shunt means comprises: a plurality of conduits extending longitudinally along said external surface of said screen, each of said conduits having perforations extending along a length of said conduit which is different from the perforated lengths of the others of said conduits.
Claim 5
Dependent Claim
44 words
The apparatus of claim 1 wherein said shunt means comprises: at least one conduit extending longitudinally along said external surface of said screen, said conduit having perforations substantially throughout its length wherein said perforations are larger at one end than at the other end.
Claim 6
Dependent Claim
44 words
The apparatus of claim 1 wherein said shunt means comprises: at least one conduit extending longitudinally along said external surface of said screen, said conduit having perforations substantially throughout its length and having a diameter larger at one end than at the other end.
Claim 7
Dependent Claim
50 words
The apparatus of claim 1 including: a cross-over sub connected to the upper end of said screen, said cross-over sub having outlet ports therein; and means for fluidly connecting said outlet ports to said shunt means whereby fluids flowing through said outlet ports will flow directly into said shunt means.
Claim 8
Dependent Claim
47 words
The apparatus of claim 6 wherein said shunt means comprises: a plurality of perforated conduits extending longitudinally along said external surface of said screen; and said connecting means comprises: a first manifold connected to each of said conduits and having inlet means connected to said outlet ports.
Claim 9
Dependent Claim
26 words
The apparatus of claim 7 including: a second manifold fluidly connected to said first manifold; and plurality of perforated conduits fluidly connected to said second manifold.
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) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |