EP0668969A1 - Sludger. - Google Patents
Sludger.Info
- Publication number
- EP0668969A1 EP0668969A1 EP93924559A EP93924559A EP0668969A1 EP 0668969 A1 EP0668969 A1 EP 0668969A1 EP 93924559 A EP93924559 A EP 93924559A EP 93924559 A EP93924559 A EP 93924559A EP 0668969 A1 EP0668969 A1 EP 0668969A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid
- borehole
- pump
- valve
- borehole pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000002904 solvent Substances 0.000 claims abstract description 9
- 238000005086 pumping Methods 0.000 claims abstract description 3
- 230000002706 hydrostatic effect Effects 0.000 description 10
- 238000007789 sealing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 210000003746 feather Anatomy 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/04—Units comprising pumps and their driving means the pump being fluid driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
- F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening
Definitions
- the invention relates to a borehole pump for pumping a viscous fluid, for. B. of petroleum, from underground deposits.
- the borehole pump is lowered into a borehole until it is immersed in the fluid or in the fluid-carrying bottom layer. It fills up with the fluid.
- a solvent liquid of lower viscosity is mixed with the fluid to reduce the viscosity.
- the object is achieved in that the borehole pump is provided with a shut-off device between its inlet and before the actual inlet of the pump part.
- This has the advantage that the pump part is closed when it is lowered into the borehole, so that no viscous fluid can penetrate into the moving parts of the pump part.
- the shut-off device can be designed in the form of a hydraulically operated valve.
- a valve that has a rotationally symmetrical flow cross section.
- the development according to claim 4 is advantageous, in which the valve is closed in the flow direction.
- the hydrostatic pressure in the borehole increases the sealing effect of the shut-off body, which is pressed into its seat.
- a major advantage is that in this embodiment the valve is self-acting when there is a sudden drop in pressure in the solution liquid, e.g. B. due to the failure of the pump on the surface. In the event of an accident, no undiluted, viscous petroleum can get into the pump part, which makes it difficult to restart the borehole pump.
- the return means ensures a secure closure of the valve.
- FIG 2 shows a schematic arrangement of the borehole pump in a borehole with the supply devices.
- Borehole pump are separated and is connected to the casing (1), here z. B. screwed.
- the piston (7) and the piston rod (5) are sealed.
- the piston rod (5) is supported by a guide (14) provided with flushing bores (13).
- the guide (14) has axial bores for the passage of the medium. The radial flush holes prevent the ingress of
- the sealing surface of the valve body (4) is located on the side facing the piston (7) and finds its equivalent in the seat (15) of the valve housing (3).
- the seat (15) is created by a conical tapering of the valve housing (3) and can optionally also be provided with elastic seals.
- the valve body (4) is aerodynamically shaped in the form of a double cone. Due to the low deflection of the flow, the flow resistance is particularly low.
- the borehole pump consists of a motor (17), a pump part (18) and the shut-off device (19) with an inlet (20).
- the motor (17) is supplied with energy from the surface via a supply line (21).
- the solution liquid in the container (22) is pressed by a pump (23) on the surface (26) via the line (24) into the borehole (16) and mixed in whole or in part with the fluid.
- a pressure is available at the borehole pump, which is composed of the hydrostatic pressure and the pressure applied by the pump (23) to the surface (26).
- the fluid is sucked in via the inlet (20), passing through the shut-off device (19), from the pump part (18) and transported via a delivery line (25) to the surface (26), where it is collected by means of suitable devices (27).
- the supply line (21) for the drive liquid can coincide with the line (24) for the solution liquid.
- the solution liquid is under pressure, namely the hydrostatic pressure through the liquid column and a pressure component that is generated by a pump (23) on the surface (26).
- This pressure must generate a force greater than the sum of the spring force, the return spring (11) and the force on the valve body (4).
- the pressure component and the piston cross-section must be designed accordingly. Operation with the valve open presupposes that the opening forces are and remain greater than the closing forces. However, since forces act on the valve body (4) both in the opening and in the closing direction, the force required for opening on the piston (7) is reduced and the pressure provided for opening is sufficient in any case to maintain the opening of the valve .
- Solution liquid in the piston (7) force to bring the valve into the closed position.
- the spring force is to be interpreted accordingly.
- the admixture of the solution liquid to the fluid takes place after it has passed the shut-off point either in the shut-off device itself, in a downstream mixing module or in some other way.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4237050A DE4237050A1 (en) | 1992-11-03 | 1992-11-03 | Borehole pump |
DE4237050 | 1992-11-03 | ||
PCT/EP1993/003036 WO1994010449A1 (en) | 1992-11-03 | 1993-10-30 | Sludger |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0668969A1 true EP0668969A1 (en) | 1995-08-30 |
EP0668969B1 EP0668969B1 (en) | 1997-01-29 |
Family
ID=6471966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93924559A Expired - Lifetime EP0668969B1 (en) | 1992-11-03 | 1993-10-30 | Sludger |
Country Status (5)
Country | Link |
---|---|
US (1) | US5582505A (en) |
EP (1) | EP0668969B1 (en) |
DE (2) | DE4237050A1 (en) |
NO (1) | NO306794B1 (en) |
WO (1) | WO1994010449A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6508631B1 (en) | 1999-11-18 | 2003-01-21 | Mks Instruments, Inc. | Radial flow turbomolecular vacuum pump |
US6636174B2 (en) * | 2000-06-06 | 2003-10-21 | Altratek Inc. | System and method for detection and tracking of targets |
NO337348B1 (en) * | 2014-08-18 | 2016-03-21 | Aker Subsea As | VARIETY SPEED OPERATING VARIABLE SPEED FOR LARGE PUMPS AND COMPRESSORS. |
CN111963104B (en) * | 2020-09-02 | 2022-08-30 | 东营市天山石油机械配件有限公司 | Safety valve for offshore oil filling type well drilling |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1493509A (en) * | 1922-01-28 | 1924-05-13 | Don S Willey | Centrifugal pump |
US2022749A (en) * | 1933-03-22 | 1935-12-03 | James W Taylor | Well flowing device |
US2567513A (en) * | 1945-07-02 | 1951-09-11 | Vernon Tool Co Ltd | Well pumping system |
US2516822A (en) * | 1946-01-18 | 1950-07-25 | W S Darley & Company | Combined turbine and centrifugal booster pump |
US2640543A (en) * | 1947-08-18 | 1953-06-02 | Baker Oil Tools Inc | Hydraulically operable valve controlled well tool |
US2812721A (en) * | 1949-12-01 | 1957-11-12 | Kobe Inc | Well pump |
US2853017A (en) * | 1954-01-12 | 1958-09-23 | Renson Albert | Centrifugal pump |
US2933042A (en) * | 1957-06-10 | 1960-04-19 | Edith I Scrivner | Additive well pump |
US3007524A (en) * | 1961-11-07 | 1961-11-07 | Jersey Prod Res Co | Subsurface valve |
US3758238A (en) * | 1972-07-24 | 1973-09-11 | Kobe Inc | Free turbine pump |
US3807894A (en) * | 1972-12-07 | 1974-04-30 | Trw Inc | Storm choke apparatus for submergible pumps |
US4021137A (en) * | 1975-09-24 | 1977-05-03 | Trw Inc. | Storm choke apparatus for submergible pumps |
US4440221A (en) * | 1980-09-15 | 1984-04-03 | Otis Engineering Corporation | Submergible pump installation |
US4721162A (en) * | 1984-08-29 | 1988-01-26 | Camco, Incorporated | Fluid level controlled safety valve |
FR2599091B1 (en) * | 1986-05-21 | 1990-10-26 | Guinard Pompes | METHOD AND INSTALLATION FOR CIRCULATING FLUIDS BY PUMPING |
US4749036A (en) * | 1986-10-06 | 1988-06-07 | Dresser Industries, Inc. | Dual bore well treating tool |
GB2243406A (en) * | 1987-10-07 | 1991-10-30 | Lucas Ind Plc | Centrifugal pump |
FR2656035B1 (en) * | 1989-12-15 | 1996-01-12 | Inst Francais Du Petrole | DEVICE FOR PUMPING A LIQUID AND IN PARTICULAR A HIGH VISCOSITY LIQUID. |
-
1992
- 1992-11-03 DE DE4237050A patent/DE4237050A1/en not_active Withdrawn
-
1993
- 1993-10-30 US US08/433,395 patent/US5582505A/en not_active Expired - Lifetime
- 1993-10-30 WO PCT/EP1993/003036 patent/WO1994010449A1/en active IP Right Grant
- 1993-10-30 EP EP93924559A patent/EP0668969B1/en not_active Expired - Lifetime
- 1993-10-30 DE DE59305362T patent/DE59305362D1/en not_active Expired - Lifetime
-
1995
- 1995-03-24 NO NO951127A patent/NO306794B1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9410449A1 * |
Also Published As
Publication number | Publication date |
---|---|
NO951127D0 (en) | 1995-03-24 |
EP0668969B1 (en) | 1997-01-29 |
US5582505A (en) | 1996-12-10 |
WO1994010449A1 (en) | 1994-05-11 |
NO306794B1 (en) | 1999-12-20 |
NO951127L (en) | 1995-04-28 |
DE4237050A1 (en) | 1994-05-05 |
DE59305362D1 (en) | 1997-03-13 |
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