Patent US4851016A successfully refreshed from Google Patents.
US5033545A
Expired / Lapsed
US
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Conduit of well cleaning and pumping device and method of use thereof
Assignee: BJ Services Co USA
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Filing: 1988-10-25
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Granted: 1991-07-23
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Expires: 2008-10-25
Abstract
Abstract The device employs the jet pump principle to bring a power fluid to sedimented solids and the like plugging a conduit, and it includes at least one nozzle which directs the power fluid in a high-velocity jet against the solids to bring the solids into suspension for subsequent removal thereof using the jet pump principle.
Inventors
- 👤 Tad A. Sudol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:55
CPC Classifications
E; E21; E21B; E21B37/00; B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/032; B08B9/035; B08B9/04; B08B9/043; B08B9/0433; E21B41/00; E21B41/0078
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
127 words
A device for removing solids from a conduit, which device comprises: a jet pump including a pump body, a main nozzle, and at least one cleaning nozzle for bringing a power fluid to said solids; passage means in said device for flowing power fluid to said main nozzle and to said at least one cleaning nozzle, whereby said at least one cleaning nozzle directs said power fluid in a high-velocity jet against said solids to bring said solids into suspension for subsequent removal of said solids by said jet pump; and pressure responsive variable flow valve means responsive to the power fluid pressure and located in said pump body and connected in fluid communication with said at least one cleaning nozzle and said source of power fluid.
Claim 2
Independent Claim
127 words
A device for removing solids from a conduit, which device comprises: a jet pump including a pump body, a main nozzle, and at least one cleaning nozzle for bringing a power fluid to said solids; passage means in said device for flowing power fluid to said main nozzle and to said at least one cleaning nozzle, whereby said at least one cleaning nozzle directs said power fluid in a high-velocity jet against said solids to bring said solids into suspension for subsequent removal of said solids by said jet pump; and pressure responsive variable flow valve means responsive to the power fluid pressure and located in said pump body and connected in fluid communication with said at least one cleaning nozzle and said source of power fluid.
Claim 3
Dependent Claim
39 words
The device of claim 1, wherein a plurality of cleaning nozzles is used and each directs a high-velocity fluid jet against sedimented solids for dispersing and fluidizing said solids and removal thereof to the surface through said pump body.
Claim 4
Dependent Claim
37 words
The device of claim 2, wherein at least one additional nozzle is arranged in the pump body in a manner to direct power fluid mixed with an agent to provide a protective film in said pump body.
Claim 5
Dependent Claim
21 words
The device of claim 1, wherein said at least one cleaning nozzle is arranged to provide a forwardly directed high-velocity jet.
Claim 6
Dependent Claim
22 words
The device of claim 1, wherein said at least one cleaning nozzle is arranged to provide a tangentially directed high-velocity spinning jet.
Claim 7
Dependent Claim
19 words
The device of claim 1, wherein said at least one cleaning nozzle is located forwardly of said main nozzle.
Claim 8
Dependent Claim
19 words
The device of claim 1, wherein said at least one cleaning nozzle is located rearwardly of said main nozzle.
Claim 9
Dependent Claim
20 words
The device of claim 1, wherein said at least one cleaning nozzle is located at the pump body lower circumference.
Claim 10
Dependent Claim
32 words
The device of claim 1, wherein said at least one cleaning nozzle is located at the pump body lower circumference near the centre of the produced fluid entry of said pump body.
Claim 11
Dependent Claim
22 words
The device of claim 1, and further including means for rotatably mounting said at least one cleaning nozzle on said pump body.
Claim 12
Dependent Claim
17 words
The device of claim 10, wherein said means is a rotating head connected to said pump body.
Claim 13
Dependent Claim
25 words
The device of claim 1, which includes external centralizers secured exteriorly at said pump body to prevent the device from becoming stuck in said conduit.
Claim 14
Dependent Claim
16 words
The device of claim 1, which includes a forwardly directed spoke connected at said pump body.
Claim 15
Independent Claim
102 words
A device for removing fluidized solids from a conduit, which device comprises: a jet pump, said jet pump including a pump body having walls defining a venturi throat, a main nozzle, and at least one nozzle located in said pump body for directing power fluid against the wall of said venturi throat; and passage means in said device for flowing power fluid to said jet pump and to said at least one nozzle to produce a liquid film for protection of said venturi throat against the abrasive action of the stream of fluidized solids which is being pumped up to the surface.
Claim 16
Independent Claim
102 words
A device for removing fluidized solids from a conduit, which device comprises: a jet pump, said jet pump including a pump body having walls defining a venturi throat, a main nozzle, and at least one nozzle located in said pump body for directing power fluid against the wall of said venturi throat; and passage means in said device for flowing power fluid to said jet pump and to said at least one nozzle to produce a liquid film for protection of said venturi throat against the abrasive action of the stream of fluidized solids which is being pumped up to the surface.
Claim 17
Dependent Claim
15 words
The device of claim 14, and further including shield means for producing said liquid film.
Claim 18
Dependent Claim
16 words
The device of claim 14, wherein said liquid film substantially precludes cavitation at said venturi throat.
Claim 19
Independent Claim
113 words
A device for removing solids from a conduit, which device comprises: a jet pump, said jet pump including a pump body having walls defining a venturi throat, a main nozzle, and at least one nozzle located in said pump body for directing power fluid against the wall of said venturi throat; passage means in said device for flowing power fluid to said jet pump and to said at least one nozzle to produce a liquid film for protection of said venturi throat against the abrasive action of the stream of fluidized solids which is being pumped up to the surface; and at least one cleaning nozzle for bringing power fluid to said solids.
Claim 20
Independent Claim
113 words
A device for removing solids from a conduit, which device comprises: a jet pump, said jet pump including a pump body having walls defining a venturi throat, a main nozzle, and at least one nozzle located in said pump body for directing power fluid against the wall of said venturi throat; passage means in said device for flowing power fluid to said jet pump and to said at least one nozzle to produce a liquid film for protection of said venturi throat against the abrasive action of the stream of fluidized solids which is being pumped up to the surface; and at least one cleaning nozzle for bringing power fluid to said solids.
Claim 21
Independent Claim
180 words
A method of removing solids from a conduit, which includes providing a string of tubing for supplying a power fluid to a plugged location in said conduit; connecting to said string of tubing a device which comprises: a jet pump having a pump body, a main nozzle, and at least one cleaning nozzle for bringing a power fluid to said solids; passage means in said device for flowing power fluid to said main nozzle and to said at least one cleaning nozzle, whereby said at least one cleaning nozzle directs said power fluid in a high-velocity jet against said solids to bring said solids into suspension for subsequent removal of said solids by said jet pump; and pressure responsive variable flow valve means responsive to the power fluid pressure and located in said pump body and connected in fluid communication with said at least one cleaning nozzle and said source of power fluid; advancing said device to the plugged location; subjecting the plugged location to jetting action of power fluid; and removing solids from said plugged location through said device.
Claim 22
Independent Claim
180 words
A method of removing solids from a conduit, which includes providing a string of tubing for supplying a power fluid to a plugged location in said conduit; connecting to said string of tubing a device which comprises: a jet pump having a pump body, a main nozzle, and at least one cleaning nozzle for bringing a power fluid to said solids; passage means in said device for flowing power fluid to said main nozzle and to said at least one cleaning nozzle, whereby said at least one cleaning nozzle directs said power fluid in a high-velocity jet against said solids to bring said solids into suspension for subsequent removal of said solids by said jet pump; and pressure responsive variable flow valve means responsive to the power fluid pressure and located in said pump body and connected in fluid communication with said at least one cleaning nozzle and said source of power fluid; advancing said device to the plugged location; subjecting the plugged location to jetting action of power fluid; and removing solids from said plugged location through said device.
Claim 23
Dependent Claim
14 words
The method of claim 18, wherein said device is reciprocatingly moved in a well.
Claim 24
Dependent Claim
16 words
The method of claim 18, wherein said device is moved in and out in a well.
Claim 25
Dependent Claim
14 words
The method of claim 18, wherein said power fluid includes at least one admixture.
Claim 26
Dependent Claim
14 words
The method of claim 21, wherein said admixture is a reagent to remove scaling.
Claim 27
Dependent Claim
14 words
The method of claim 21, wherein said admixture is a reagent to preclude scaling.
Claim 28
Dependent Claim
28 words
The method of claim 18, and further including varying the size of said at least one cleaning nozzle to adjust the intensity of the high-velocity jet emanating therefrom.
Claim 29
Independent Claim
155 words
A method of removing solids from a conduit, which includes providing a string of tubing for supplying a power fluid to a plugged location in said conduit; connecting to said string of tubing a device, which device comprises: a jet pump, said jet pump including a pump body having walls defining a venturi throat, a main nozzle, and at least one nozzle located in said pump body for directing power fluid against the wall of said venturi throat; and passage means in said device for flowing power fluid to said jet pump and to said at least one nozzle to produce a liquid film for protection of said venturi throat against the abrasive action of the stream of fluidized solids which is being pumped up to the surface; advancing said device to the plugged location; subjecting the plugged location to jetting action of power fluid; and removing solids from said plugged location through said device.
Claim 30
Independent Claim
155 words
A method of removing solids from a conduit, which includes providing a string of tubing for supplying a power fluid to a plugged location in said conduit; connecting to said string of tubing a device, which device comprises: a jet pump, said jet pump including a pump body having walls defining a venturi throat, a main nozzle, and at least one nozzle located in said pump body for directing power fluid against the wall of said venturi throat; and passage means in said device for flowing power fluid to said jet pump and to said at least one nozzle to produce a liquid film for protection of said venturi throat against the abrasive action of the stream of fluidized solids which is being pumped up to the surface; advancing said device to the plugged location; subjecting the plugged location to jetting action of power fluid; and removing solids from said plugged location through said device.
Claim 31
Independent Claim
167 words
A method of removing solids from a conduit, which includes providing a string of tubing for supplying a power fluid to a plugged location in said conduit; connecting to said string of tubing a device, which device comprises: a jet pump, said jet pump including a pump body having walls defining a venturi throat, a main nozzle, and at least one nozzle located in said pump body for directing power fluid against the wall of said venturi throat; passage means in said device for flowing power fluid to said jet pump and to said at least one nozzle to produce a liquid film for protection of said venturi throat against the abrasive action of the stream of fluidized solids which is being pumped up to the surface; and at least one cleaning nozzle for bringing power fluid to said solids; advancing said device to the plugged location; subjecting the plugged location to jetting action of power fluid; and removing solids from said plugged location through said device.
Claim 32
Independent Claim
167 words
A method of removing solids from a conduit, which includes providing a string of tubing for supplying a power fluid to a plugged location in said conduit; connecting to said string of tubing a device, which device comprises: a jet pump, said jet pump including a pump body having walls defining a venturi throat, a main nozzle, and at least one nozzle located in said pump body for directing power fluid against the wall of said venturi throat; passage means in said device for flowing power fluid to said jet pump and to said at least one nozzle to produce a liquid film for protection of said venturi throat against the abrasive action of the stream of fluidized solids which is being pumped up to the surface; and at least one cleaning nozzle for bringing power fluid to said solids; advancing said device to the plugged location; subjecting the plugged location to jetting action of power fluid; and removing solids from said plugged location through said device.
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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) | 1994-07-22 | 1995-01-21 | 1995-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-22 | 1999-01-21 | 1999-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-22 | 2003-01-21 | 2003-07-23 | $7700.00 | Window Closed / Lapsed |