Patent US4088580A successfully refreshed from Google Patents.
US4088580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cluster screen for sand control
Assignee: Individual
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Filing: 1976-12-01
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Granted: 1978-05-09
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Expires: 1996-12-01
Abstract
Abstract Apparatus for separating particulate matter from a flowing fluid which, for example, may be sand entrained in a flowing stream of oil and gas, comprises an assembly including a plurality of small diameter tubular elements, the walls of which have a selected permeability to said fluid. The tubular elements are held with their axes parallel between a pair of headers by suitable tension means. The interior of the tubes are connected to at least one plenum and to a well tubing. When this assembly is inserted into a well producing oil and gas which carries sand, the sand will be deposited against the outer walls of the tubular elements since the grain diameters are greater than the size of the openings in the walls of the tubular elements. The fluid flows through the openings in the wall of the tubular element, into the plenum and then through the well tubing to the surface of the well. By using suitable headers at each end, a plurality of these assemblies can be connected in series. This apparatus is equally applicable to the filtering of any type of particulate matter from any type of fluid.
Inventors
- 👤 James W. Spurlock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:21
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/08; E21B43/088; B; B01; B01D; B01D29/00; B01D29/11; B01D29/111; B01D29/44; B01D29/48; B01D29/50; B01D29/52; E21B43/082
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
121 words
A filter apparatus for separating particulate matter from fluid flowing from a formation within a well comprising: (a) a plurality of small diameter, rigid tubular filter elements, the walls of said tubular elements having gauged openings for the flow of said fluid thereacross into the center of said elements; (b) means to support said plurality of tubular elements, such that their axes are substantially parallel to the axis of said well and with their outer surfaces unencased and openly exposed to said formation; (c) at least one plenum means to which said center space inside said tubular elements are in communication therewith; and (d) tubing means connected to the plenum to conduct said filtered fluid to the surface of said well.
Claim 2
Dependent Claim
121 words
A filter apparatus for separating particulate matter from fluid flowing from a formation within a well comprising: (a) a plurality of small diameter, rigid tubular filter elements, the walls of said tubular elements having gauged openings for the flow of said fluid thereacross into the center of said elements; (b) means to support said plurality of tubular elements, such that their axes are substantially parallel to the axis of said well and with their outer surfaces unencased and openly exposed to said formation; (c) at least one plenum means to which said center space inside said tubular elements are in communication therewith; and (d) tubing means connected to the plenum to conduct said filtered fluid to the surface of said well.
Claim 3
Dependent Claim
72 words
The filter apparatus as in claim 1 in which said means to support comprises: (a) at least one header assembly means to support said tubular elements at their first ends in a selected parallel spacing; (b) said at least one plenum inside said header assembly means; (c) means to hold said tubular elements at their second ends; and (d) tension means to hold said header assembly means to said means to hold.
Claim 4
Dependent Claim
62 words
The filter apparatus as in claim 1 in which said means to support comprises: (a) a first and a second header assembly means to hold said tubular elements at their first and second ends respectively in a selected parallel spacing; (b) a first and a second plenum connected to the insides of said tubular means, one plenum in each header assembly means.
Claim 5
Dependent Claim
22 words
The filter apparatus as in claim 3 including means to connect a plurality of said filter apparatus devices in series flow connection.
Claim 6
Dependent Claim
17 words
The filter apparatus as in claim 1 in which said tubular elements comprise fritted small glass spheres.
Claim 7
Dependent Claim
23 words
The filter apparatus as in claim 1 in which said tubular elements comprise a selected metal and said gauged openings comprise radial perforations.
Claim 8
Dependent Claim
46 words
The filter apparatus as in claim 1 in which each of said tubular elements comprises a rigid perforated cylindrical skeleton with wire wound in a helical fashion on the outside of said skeleton and said gauged openings comprise a selected spacing between turns of said wire.
Claim 9
Dependent Claim
18 words
The filter apparatus as in claim 1 in which each of said tubular elements has the same permeability.
Claim 10
Dependent Claim
19 words
The filter apparatus as in claim 1 in which at least two of said elements has a different permeability.
Claim 11
Dependent Claim
20 words
The filter apparatus as in claim 7 in which said spacing between turns is different for at least two elements.
Claim 12
Dependent Claim
19 words
The filter apparatus as in claim 7 in which said spacing between turns is the same for all elements.
Claim 13
Dependent Claim
134 words
The filter apparatus as in claim 2 in which said header assembly means comprises: (a) a cylindrical plenum of selected length; (b) means to seal a pipe to a top end of said plenum; (c) a first header plate comprising the bottom end of said plenum; (d) a plurality of holes drilled through said plate of diameter less than the outer diameter of said elements in a selected pattern; (e) said holes in said plate counterbored at the bottom surface of said plate, to rotatably receive the top ends of said elements; (f) a second header plate at the bottom of said elements and counterbored at the top of said second plate to rotatably receive the bottom end so said elements; and (g) means interconnecting said first and second headers in a fixed position.
Claim 14
Dependent Claim
62 words
The filter apparatus as in claim 1 in which said means to support said tubular elements provides freedom of said elements to rotate under the influence of impingement of said flowing liquid against the outer surface of said elements, whereby the possible erosion of the surface of said elements by said flowing liquid is distributed over the total area of said elements.
Claim 15
Dependent Claim
11 words
Apparatus of claim 1 wherein said elements are in circular array.
Claim 16
Dependent Claim
16 words
Apparatus of claim 1 wherein said elements are of two concentric inner and outer circular arrays.
Claim 17
Dependent Claim
18 words
Apparatus of claim 15 wherein the screen size of said outer array is larger than said inner array.
References Cited (Backward Citations)
US78689A
Cited
US655841A
Cited
US725117A
Cited
US2525897A
Cited
US2837032A
Cited
US2946445A
Cited
US3291313A
Cited
US3319793A
Cited
US3751271A
Cited
US3709293A
Cited
US3747765A
Cited
US3937281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-08 | 1981-11-07 | 1982-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-08 | 1985-11-07 | 1986-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-08 | 1989-11-07 | 1990-05-09 | $7700.00 | Window Closed / Lapsed |