AU595828B2 - Fluid driven pumping apparatus - Google Patents
Fluid driven pumping apparatus Download PDFInfo
- Publication number
- AU595828B2 AU595828B2 AU62153/86A AU6215386A AU595828B2 AU 595828 B2 AU595828 B2 AU 595828B2 AU 62153/86 A AU62153/86 A AU 62153/86A AU 6215386 A AU6215386 A AU 6215386A AU 595828 B2 AU595828 B2 AU 595828B2
- Authority
- AU
- Australia
- Prior art keywords
- motor
- pump
- fluid
- housing
- screw rotors
- 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.)
- Ceased
Links
- 239000012530 fluid Substances 0.000 title claims description 66
- 238000005086 pumping Methods 0.000 title claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/129—Adaptations of down-hole pump systems powered by fluid supplied from outside the borehole
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
- F04C11/003—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle having complementary function
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C13/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01C13/04—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby for driving pumps or compressors
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Description
4' Ii
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U
SPRUSON FERGUSON COMMONWEALTH- OF AUSTRALIA, PATENTS ACT 1952
CO-MPLETESPECIFICATION
(ORIGINAL)
FOR OFFICE USE: 828 lit. Class Complete Specificatiozn Lodge~d: Accepted: Publi-ned: This d(otuflent confawns thel Sectioii 49,L,-,d is ci to Priority: Related Art: Nameo of ApplicantL.
Address of Applicant: Actual inventor: 4 T Address for Service.
SHELL INTERNATIONALE RESEARCH I4AATSCHAPPIJ B .V.
Care]. van lBylaidtlaan 30, 2596 H'R, The Hague, the Netherlands P.ETER ERIC SIMMONS Spruson Ferguson, Patent Attorneys, Level 33 St Martins Tower, 31 Market Street, Sydney, Now South Wales, 2000, Australia Complete Specification for the invention entitled; "FLUID DRIVEN PUMPING APPARATUS" The following statement is a full description of this invention, including the best method of performing it known to us SBR:eah 52M i "i 1. a 4 1 FLUID DRIVEN PUMPING APPARATUS The invention relates to a fluid driven apparatus for pumping a fluid or a mixture of fluids. The invention relates in particular to a fluid driven apparatus for pumping fluids at remote or difficult accessible locations, such as in a well or in a sub-sea flowline.
Apart from jet pumps, which are rather inefficient, presently available fluid driven pumps are generally of the turbine type. However, turbine pumps employ high fluid velocities and narrow fluid passages which gives rise to a high wear rate and thus to frequent maintenance if the produced fluid is sand bearing.
An object of the invention is to provide a compact and reliable fluid driven pumping apparatus which has a low wear rate even if the produced 0 fluid is sand bearing and which can be easily installed in a flowline o 0 system.
o oo 0o !o A further object of the invention is to provide a fluid driven 0 o° pumping apparatus which is able to pump both gaseous and liquid fluids or 00 a o0 0 mixtures thereof.
0 oo According to the present invention there is provided fluid driven oo pumping apparatus comprising a housing having mounted therein a twinrl rotor screw type positive displacement motor having intermeshing twin rotor screws and a twin rotor screw type positive displacement pump having 0o0 intermeshing twin rotor screws connected to said motor by means of a pair ooas 00 of shafts rotatably mounted in the housing each of said shafts carrying one o o0 0" of the rotor screws of the motor and one of the rotor screws of the pump, a 0025 driving fluid inlet located near one end of the housing, a pumped fluid o a0 outlet located near an opposite end of the housing, a driving fluid outlet comprising a chamber formed in the interior of the housing between the 000.. motor and the pump, and a pumped fluid inlet comprising a port opening formed in the housing wall and which discharges into said chamber.
The driving fluid outlet is in fluid communication with the pumped fluid inlet so that the driving fluid emerging from the motor mixes with the incoming pumped fluid before the combined fluid stream passes into the pump.
JLH/74y Wi.i~)-*ul-curuuuri- 2- In a suitable embodiment of the invention the screw rotors of said pump and motor which are mounted on a comnon shaft are identical in helix angle and pitch diameter. However, the screw rotors of said pump preferably have a larger tip diameter and a correspondingly smaller base diameter than the screw rotors of said motor.
The invention will now be described by way of example with reference to the accompanying drawing, in which: Fig. 1 shows a longitudinal section of a pumping apparatus according to the invention.
apparatus according to the invention.
0 Fig. 3 is a longitudinal section of apparatus of Fig. 2 taken along line I-I in Fig. seen in the direction of arrows
III.
Fig. a cross-section of the apparatus of Fig.2 and 3 seen i i irctiion o-f arrows IV J n Fig. 3.
The pumping apparatus shown in Fig. 1 comprises a housing 1 enclosed in a protective shell 2. The housing 1 consists of a side wall 3 and upper and lower terminal walls 5 and 6, respectively.
The lower part of the housing contains a motor section consisting of a twin rotor screw type positive displacement motor 10, whereas the upper part of the housing contains a pump section consisting of a twin rotor screw type positive displacement pump 11. The motor S 25 section 10 comprises a pair of cooperating screw rotors 10A and and the pump section 11 comprises a similar pair of cooperating screw rotors 11A and 11B. The screw rotors 10A and 11A Sc shown at the left side of the drawing are identical in helix angle and they are mounted on a common shaft 13, whereas the screw rotors 10B and 11B shown at the right side of the drawing are also identical in helix angle and mounted on a common shaft 14. The helix angles of the cooperating pairs of screw rotors 10A, 10B and 11A, 11B, respectively, are opposite to each other and the axes of rotatio. of the shafts 13 and 14 are parallel to each other.
-3 0CC 0 C I o o4 00 800 a 9 0 0 0 0 C 0 4 As illustrated in Fig. 1 the screw rotors 11A, 11B of the pumtp and the screw rotors 10A, l0B of the motor have identical pitch radii RPbut the screw rotors 11A, 11B of the pumTp have a larger tip radius and a correspondingly smaller base radius than the screw rotors 10A, 10B of the nrotor.
The shafts 13 and 14 are supported by bearings 16 in the upper- and lcower terminal walls 5, 6.
The bearings 16 my be of any suitable type and it is preferred to lubricate the bearings with clean drive fluid derived from an inlet compartment 17 at the upstream end 18 of the mrotor.
In order to facilitate lubrication of the bearings 16 in the upper terminal wall 5 the shafts 13 and 14 my each be provided with a bore (not shown) forming a fluid corTuunication between the said inlet compartment 17 and the bearings 16 in said upper wall 15 Furthermrore, by means of radial drillings (not shown) in the screw rotors 11A, 11B, comnicating with the bores, clean drive fluid can be introduced into close clearance points at the rotor tips, further preventing damage by sand and other erosive matter.
Alternatively, clean drive fluid can be supplied to the bearings 16 20 in the upper terminal wall 5 through a suitable passage (not shown) in the housing.
During operation of the pumping apparatus driving fluid is injected into the inlet compartrnent 17 via a driving fluid inlet port 20 passing through the side wall 2 of the apparatus at a location adjacent to the lower housing wall 6. Said injection causes the drive fluid to move in upward direction through the lcower comrpartmrent 8 towards a cham-ber 21 formed in the middle of the housing 1 between the downstream end 22 of the motor 10 and the upstream end 23 of the pump, thereby actuating the screw rotors 10A, l0B of the motor to rotate in opposite directions, as indicated by arrows V. The manner in which the drive fluid actuates the screw rotors 10A, lOB of the twin rotor screw type Mitor is known per se and does not require a detailed description.
-4 Said rotation of the screw rotors 10A, l0B of the mrotor induces the shafts 13, 14 and thus the screw rotors 11A, 11B of the pump lb to rotate at the same speed in the direction of arrows V.
Due to the large tip diameter and small base diamreter of the pump rotors 11A, b1B in comparison to the motor rotors bOA, 1OB, or in other worcds due to the large displacemrent volumre of the pump 11 in comparison to that of the mrotor 10, the pump rotors 11A, b1B tend to suck more fluid away from the chamber 21 than the amrount of driving fluid discharged from the motor Tis c-pedfluid to be sucked into the chamber via a j9b fluid inlet 24 formed in the side wall 3 of the housing 00 ecand to be subsequently pumped together with the driving fluid in 0 upward direction by the pump rotors 11A, 11B towards a pumped fluid 11 outlet 25 formred near the upper terminal wall at 15 The pumping apparatus shown in Fig. 1 may be used to pum~p single- or mrultiphase fluids such as mixture of hydrocarbon fluids containing cri-de oil and natural gas, while the pumped fluids may contain solid particles, such as sand, without giving rise to a largely increased wear rate of the apparatus. If the pumped fluid mainly consists of a liquid, it is preferred to use recirculated pumped fluid as driving fluid and to filter solid particles such as sand from the pumped fluid befozre reinjecting it into the driving fluid inlet 20 of the apparatus as a clean driving fluid. The reinjected pumped fluid may be mixed up with other fluids or lubricants if the viscosity of the pumped fluid is too high to allow it to be used as driving fluid.
If the pumped fluid consists of a gas-liquid mixture it is preferred to separate the liquid phase from the gaseous phase and to use the liquid phase as driving fluid. If the pumped fluid mainly consists of a gas it is preferred to use a liquid as driving fluid. This would enable sufficient lubrication of the bearings 16 and rotor tips 19 and would further provide sufficient minimu= flow of liquid through the pump to enable the pump to continue to develop its full differential pressure.
It will be appreciated by those skilled in the art that GAT T ll_ il_~lill_.Xli X I 1 \II ;i:li _I instead of arranging the shafts parallel to each other as shown in Fig. 1, the shafts may also be arranged at an angle relative to each other, provided that the screw rotors of the pump and motor have a suitable shape.
-The pupn ppratus sh n igu 2 4 prises a hi 31 with a longitudinal axis I-I and a side wall 32 having a cylindrical outer surface 33 arranged co-axial to said axis I On the outer surface 33 of the side wall 32 there are mounted o inflatable packers 34 or other suitable devices for secur g the apparatus at a selected downhole location inside a roduction string (not shown) within a well from which a fluid, uch as crude ,oil, is produced. The housing 31 further comprises pper and lower Sterminal walls 35 and 36, respectively, and an i ermediate wall 37, which walls are substantially flat and arr ged cross-axial to the longitudinal axis I-I. The intermediate all 37 is located in the middle of the housing 31. and divides e housing interior into an upper compartment 38 and a lower c t 39. The upper housing compartment 38 comprises the tor section consisting of a twin rotor screw type positive disp cement motor 40, whereas the lower housing compartment 39 comp ises the pump section consisting of a twin rotor screw type pos ive displacement pump 41. The motor section 40 comprises a pair cooperating screw rotors 40A and and the pump section comprises a similar pair of cooperating screw rotors 41A 41B. The screw rotors 40A and 41A shown at the left side of Fi. 2 are identical in diameter and helix angle and they are unted on a common shaft 43, whereas the screw rotors 40B and 41 shown at the right side of Fig. 2 are also Sidentical in di ter and helix angle and mounted on a common shaft 44. The helix gles of the cooperating pairs of screw rotors 40B and 41A 41B, respectively, are opposite to each other and the axes of r tation of the shafts 43 and 44 are parallel to each other and to e longitudinal axis I-I.
e shafts 43 and 44 are supported by bearings 46 in the up r- and lower terminal walls 35, 36 and pierce through openings 4 in the interediate wall 37. The openijs 47 y be provided-
Claims (1)
- 6- The claims defining the invention are as follows: 1. Fluid driven pumping apparatus comprising a housing having mounted therein a twin rotor screw type positive displacement motor having intermeshing twin rotor screws and a twin rotor screw type positive displacement pump having intermeshing twin rotor screws connected to said motor by means of a pair of shafts rotatably mounted in the housing each of said shafts carrying one of the rotor screws of the motor and one of the rotor screws of the pump, a driving fluid inlet located near one end of the housing, a pumped fluid outlet located near an opposite end of the housing, a driving fluid outlet comprising a chamber formed in the interior of the housing between the motor and the pump, and a pumped fluid inlet comprising a port opening formed in the housing wall and which discharges into said chamber. 2. The apparatus of claim 1, wherein the fluid displacement volume of said pump is larger than the fluid displacement volume of said motor. 3. The apparatus of claim 2, wherein said shafts are parallel to each other and the screw rotors of said pump and motor which are mounted on S a common shaft are identical in pitch diameter and helix angle. 4. The apparatus of claim 3, wherein the screw rotors of said pump have a larger tip diameter and a correspondingly smaller base diameter than the screw rotors of said motor. The apparatus of claim 1, wherein the screw rotors of said pump and motor which are mounted on common shafts are identical in diameter and helix angle. 6. Fluid driven pumping apparatus, substantially as hereinbefore described with reference to the accompanying drawing. DATED this THIRTIETH day of JANUARY 1990 Shell Internationale Research Maatschappij BV Patent Attorneys for the Applicant SPRUSON FERGUSON A JNTH/74y L H 74y
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB858521978A GB8521978D0 (en) | 1985-09-04 | 1985-09-04 | Pumping well fluids |
| GB8521978 | 1985-09-04 | ||
| GB868605033A GB8605033D0 (en) | 1986-02-28 | 1986-02-28 | Fluid driven pumping apparatus |
| GB8605033 | 1986-02-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU6215386A AU6215386A (en) | 1987-03-05 |
| AU595828B2 true AU595828B2 (en) | 1990-04-12 |
Family
ID=26289729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU62153/86A Ceased AU595828B2 (en) | 1985-09-04 | 1986-09-02 | Fluid driven pumping apparatus |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0216406B1 (en) |
| AU (1) | AU595828B2 (en) |
| CA (1) | CA1289412C (en) |
| DE (1) | DE3680621D1 (en) |
| NO (1) | NO171028C (en) |
| SG (1) | SG69692G (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2357887C (en) | 2001-09-28 | 2006-07-04 | Pradeep Dass | Method of adapting a downhole multi-phase twin screw pump for use in wells having a high gas content and a downhole multi-phase twin screw pump |
| GB0210018D0 (en) * | 2002-05-01 | 2002-06-12 | Univ City | Plural-screw machines |
| US7401655B2 (en) * | 2005-07-07 | 2008-07-22 | Baker Hughes Incorporated | Downhole gas compressor |
| EP2216501A1 (en) * | 2009-02-10 | 2010-08-11 | BP Exploration Operating Company Limited | Pump |
| DE102014000846A1 (en) | 2014-01-27 | 2015-07-30 | Klaus Union Gmbh & Co. Kg | Screw Pump |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1702838A (en) * | 1927-12-30 | 1929-02-19 | Sullivan Machinery Co | Combined mechanical and air-lift pumping system |
| US2269189A (en) * | 1939-03-20 | 1942-01-06 | Harold R Downs | Fluid pump |
| US2804260A (en) * | 1949-07-11 | 1957-08-27 | Svenska Rotor Maskiner Ab | Engines of screw rotor type |
| US3184155A (en) * | 1963-04-17 | 1965-05-18 | Cooper Bessemer Corp | Motor compressor unit |
| US4292011A (en) * | 1979-08-20 | 1981-09-29 | Kobe, Inc. | Turbo pump gas compressor |
| US4386654A (en) * | 1981-05-11 | 1983-06-07 | Becker John A | Hydraulically operated downhole oil well pump |
| DE3409970C1 (en) * | 1984-03-19 | 1985-07-18 | Norton Christensen, Inc., Salt Lake City, Utah | Device for conveying flowable substances |
-
1986
- 1986-08-15 DE DE8686201423T patent/DE3680621D1/en not_active Expired - Fee Related
- 1986-08-15 EP EP86201423A patent/EP0216406B1/en not_active Expired - Lifetime
- 1986-09-02 NO NO86863514A patent/NO171028C/en unknown
- 1986-09-02 AU AU62153/86A patent/AU595828B2/en not_active Ceased
- 1986-09-03 CA CA000517400A patent/CA1289412C/en not_active Expired - Fee Related
-
1992
- 1992-07-03 SG SG696/92A patent/SG69692G/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE3680621D1 (en) | 1991-09-05 |
| CA1289412C (en) | 1991-09-24 |
| EP0216406A1 (en) | 1987-04-01 |
| NO171028B (en) | 1992-10-05 |
| AU6215386A (en) | 1987-03-05 |
| SG69692G (en) | 1992-09-04 |
| NO171028C (en) | 1993-01-13 |
| EP0216406B1 (en) | 1991-07-31 |
| NO863514D0 (en) | 1986-09-02 |
| NO863514L (en) | 1987-03-05 |
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