US5320500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous mixing device, method and use in an installation for pumping a high viscosity fluid
Assignee: IFP Energies nouvelles
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Filing: 1992-09-10
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Granted: 1994-06-14
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Expires: 2012-09-10
Abstract
Abstract The invention concerns a continuous mixing device (1) having a rotating shaft (4) fitted with blades (7, 7a). The mixture obtained at the outlet from the mixer results from admitting to the mixer a high-viscosity fluid (22) and at least one fluid of a lower viscosity. The mixing device is suitable for providing a mixture of lower viscosity compared with the most viscous fluid admitted at the inlet (2, 38) of the mixer. The invention provides a method of pumping a viscous fluid and use of the mixing device in an installation for pumping a high viscosity crude oil. FIG. 1 to be published.
Inventors
- 👤 Henri Cholet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:47
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/50; B01F27/55; E; E21; E21B; E21B43/00; E21B43/12; E21B43/121
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
211 words
An installation for pumping a high viscosity crude oil in a wall incorporating a casing, wherein said installation comprises a continuous mixing device comprising a body in which fluids flow between an inlet and an outlet of said body and at least two fluids with different viscosities enter through said inlet, a rotating shaft having at least two blades and being suitable for supplying at the outlet from said body, a mixture of said two fluids, said mixture having viscosity less than that of the most viscous fluid entering said inlet; and a hydraulic pump connected to said body via said outlet and wherein said installation has a pipe for feeding the crude oil to the inlet of said mixing device, a pipe connecting the outlet from said mixing device to an inlet of the pump, a hydraulic motor for rotating the pump and the rotating shaft of said mixing device, a pipe for injecting driving fluid connecting an injection installation on the surface to the motor, an outlet pipe from the pump conveying the mixture to the surface again and an outlet pipe from the motor conveying some of the driving fluid to the surface again, the remainder being conveyed to the inlet of said mixing device through another pipe.
Claim 2
Dependent Claim
211 words
An installation for pumping a high viscosity crude oil in a wall incorporating a casing, wherein said installation comprises a continuous mixing device comprising a body in which fluids flow between an inlet and an outlet of said body and at least two fluids with different viscosities enter through said inlet, a rotating shaft having at least two blades and being suitable for supplying at the outlet from said body, a mixture of said two fluids, said mixture having viscosity less than that of the most viscous fluid entering said inlet; and a hydraulic pump connected to said body via said outlet and wherein said installation has a pipe for feeding the crude oil to the inlet of said mixing device, a pipe connecting the outlet from said mixing device to an inlet of the pump, a hydraulic motor for rotating the pump and the rotating shaft of said mixing device, a pipe for injecting driving fluid connecting an injection installation on the surface to the motor, an outlet pipe from the pump conveying the mixture to the surface again and an outlet pipe from the motor conveying some of the driving fluid to the surface again, the remainder being conveyed to the inlet of said mixing device through another pipe.
Claim 3
Dependent Claim
54 words
An installation according to claim 1, wherein the profile of the blades is such that, without any flow of said fluids, the rotation of the blades produces a reaction force substantially parallel to an axis of rotation of said shaft and directed in a same direction as the flow when the flow is established.
Claim 4
Dependent Claim
41 words
An installation according to claim 1, wherein the profile of the blades is such that, without any flow of said fluids, the rotation of blades does not produce a reaction force of any notable magnitude parallel to the axis of rotation.
Claim 5
Dependent Claim
65 words
An installation according to claim 1, wherein said mixing device has at least one assembly of three stages of blades, each stage consisting of at least tow blades having the same cylindrical volume generated by revolution, said stages are offset by 120° with respect to the axis of said shaft and cylindrical volumes generated by the revolution of each stage of blades are approximately adjacent.
Claim 6
Dependent Claim
27 words
An installation according to claim 4, wherein a stage comprises two blades disposed at 180° on the shaft and said mixing device has four of said assemblies.
Claim 7
Dependent Claim
48 words
An installation according to claim 1, said installation further comprising a sealing means positioned between said crude oil feed pipe and walls of the well defining an annular conduit communicating as far as the surface and the pump mixture is raised to the surface through said annular conduit.
Claim 8
Dependent Claim
45 words
An installation according to claim 1, wherein said installation further comprises a single conduit for raising said part of the driving fluid and said mixture and at the surface this conduit communicates with an installation unit for separating the crude oil and the driving fluid.
Claim 9
Dependent Claim
31 words
An installation according to claim 1, wherein said body of the mixing device has deflectors, the inner edges of which are substantially tangent to the volume of revolution of the blades.
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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) | 1997-06-13 | 1997-12-13 | 1998-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-13 | 2001-12-13 | 2002-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-13 | 2005-12-13 | 2006-06-14 | $7700.00 | Window Closed / Lapsed |