WO1999024717A1 - Antriebskopf für ein drehantreibbares gestänge, insbes. zum antreiben einer bohrlochpumpe - Google Patents
Antriebskopf für ein drehantreibbares gestänge, insbes. zum antreiben einer bohrlochpumpe Download PDFInfo
- Publication number
- WO1999024717A1 WO1999024717A1 PCT/EP1998/006917 EP9806917W WO9924717A1 WO 1999024717 A1 WO1999024717 A1 WO 1999024717A1 EP 9806917 W EP9806917 W EP 9806917W WO 9924717 A1 WO9924717 A1 WO 9924717A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- linkage
- stator
- drive head
- bolt
- Prior art date
Links
- 239000004576 sand Substances 0.000 title 1
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 238000005553 drilling Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 12
- 238000007789 sealing Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
Classifications
-
- 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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/28—Safety arrangements; Monitoring
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
-
- 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
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/70—Safety, emergency conditions or requirements
- F04C2270/72—Safety, emergency conditions or requirements preventing reverse rotation
Definitions
- Drive head for a rotationally drivable linkage, in particular for driving a borehole pump
- the invention relates to a drive head according to the preamble of claim 1.
- any load with a torque to be transmitted by the rod results in the rod twisting elastically and thus in elastic deformation work stores, which can suddenly be released when the load stops with the torque.
- This deformation work which can also be referred to as twisting energy, depends on the torque applied and the length of the boom.
- the torque is transmitted, for example, from an electric motor to the sleeve via a transmission with a reduction ratio of 4: 1 and from there via the linkage, which may be more than a thousand meters long, to a pump rotor connected to its lower end.
- the twisting of the linkage from the sleeve to the lower end can amount to 100 or more revolutions. If the motor is now switched off or if it fails due to a defect, care must be taken to ensure that the twisting energy stored in the linkage is not suddenly released. This necessary precaution has resulted in generic drive heads being equipped with a continuously operating return brake in the form of a fluid brake.
- the recoil brake comprises a hydraulic circuit ⁇ running on with a pump and a throttle point.
- the pump has a rotor, which is connected via a directional lock to the sleeve in a torque-transmitting manner only in the event of a return, via which the rod is driven in normal operation.
- Another known drive head of the type mentioned (DE 196 28 950 AI) has a hydrodynamic retarder with a rotor blade wheel and a stator blade ⁇ wheel as a return brake, which together form a toroidal working space which is always filled with fluid during operation.
- the rotor blade wheel is at least indirectly ⁇ with a Antriebsma ⁇ machine for the linkage in constant drive connection.
- the blading of the rotor and stator impeller is designed so inclined with respect to a parting plane between these two impellers that due to the direction of the blades, when the linkage is driven by the drive machine, the rotor impeller rotates essentially in freewheeling mode, on the other hand in the event of an interruption of the power flow from the drive ⁇ machine, strands on the occurrence of restoring moments on Bohrlochge-, a braking torque between rotor blade wheel and stator blade wheel ⁇ is generated.
- Another known drive head for a rotatably drivable borehole linkage (GB 2299849 A) as the reverse brake just ⁇ if a hydrodynamic retarder with a rotor blade wheel and a stator blade wheel ⁇ ; the rotor blade wheel is connected by a mechanical directional lock to a sleeve enclosing the linkage in such a way that the rotor blade wheel is driven only when it returns.
- Ener ⁇ known are also Viskobremsen (DE 39 09 231 AI); Such brakes, however, have so far not been proposed as return brakes for drivable rods, in particular borehole rods. All fluid brakes have in common that their braking effect is more or less temperature-dependent. This can lead to problems when using a fluid brake as a return brake for a borehole linkage, since drive heads for borehole linkages are often used at extreme temperatures and in some places of extremely large differences between day and night temperatures.
- the temperature dependency of the fluids commonly used for fluid brakes can lead to the fact that, for example, a fluid suitable for average or high temperatures becomes so tough at low temperatures that the reverse brake is unable to largely dissipate the twisting energy stored in a borehole linkage so that the drive head is safe can be worked.
- the invention is therefore based on the object of equipping a drive head for a rotationally drivable linkage, in particular for driving a borehole pump, with a return brake which can be used to safely check whether the twisting energy has essentially been reduced.
- Fig.l a drive head according to the invention in a vertical axial section; 2 shows an enlarged detail from Fig.l; 3 shows a first modification of FIG. 2; Fig.4 shows a second modification of Fig.2.
- the drive head shown in Fig.l serves to rotate a vertical rod 10, which extends from the earth's surface into a borehole and is connected at its lower end with a pump rotor, not shown, for example a helical rotor of an eccentric screw pump.
- the housing 12 encloses a gear chamber 14, a substantially horizontal intermediate wall 16, which separates the gear chamber 14 from a sealing chamber 18 arranged below it, and a locking and braking chamber 20, which is also arranged under the gear chamber 14 and from which is located laterally next to it Sealing chamber 18 is separated by a vertical partition 22.
- a lower passage 24 and an upper passage 26 are formed vertically one above the other in the housing, through which the linkage 10 can be lowered and raised.
- the gear chamber 14 and the locking and brake chamber 20 are constantly connected to one another by an oil passage 28 and are essentially filled with gear oil.
- the sealing chamber 18 contains a barrier fluid, the level of which can be monitored by a monitoring device, not shown, for example a sight glass or a sensor.
- a sleeve 30 extends vertically downwards into the gear chamber 14 and further through the horizontal intermediate wall 16 into the sealing chamber 18.
- the sleeve 30 is in the intermediate wall 16 by means of a lower radial bearing 32 and immediately above an axial bearing 34 and is also mounted in the upper passage 26 of the housing 12 by means of an upper radial bearing 36.
- the sleeve 30 is connected to the linkage 10 in a torque-transmitting manner by a coupling 40 of a conventional type.
- the clutch 40 is releasable to raise or lower the linkage 10.
- a lower end region of the sleeve 30 is enclosed by a cup-shaped insert 42, which is inserted through the lower passage 24 into the housing 12 and is screwed and sealed thereon.
- the insert 42 is sealed by a lower mechanical seal 44 enclosed by it.
- an upper mechanical seal 46 is arranged, which seals the sleeve 30 against the horizontal intermediate wall 16.
- a countershaft 48 is arranged as part of a transmission 50, via which the sleeve 30, and thus the linkage 10, can be driven by a motor, not shown, for example an electric motor, which is arranged outside the housing 12.
- the countershaft 48 is mounted in the housing 12 by means of a lower bearing 52 and an upper bearing 54 and, between these two bearings, has a pinion 56 attached to it or, as shown, integrally formed with it, which is in constant engagement with the gear 38 .
- the countershaft 48 has a shaft journal 58 which extends downward beyond the lower bearing 52 and carries a directional lock 60.
- the directional lock 60 includes two bearings 62 arranged on the shaft journal 58 at an axial distance from one another, between which an inner liner 64 connected to the shaft journal 58 for common rotation is arranged.
- the inner liner 64 is enclosed at a radial distance from an outer liner 66 which is mounted on the two bearings 62.
- the two liners 64 and 66 are arranged coaxially with the countershaft 48 and delimit an annular space which contains clamping rollers 68 which are dependent on the direction of rotation.
- the directional lock 60 designed in this way acts in the operating direction of rotation of the countershaft 48 as a freewheel, but locks and drives a brake shaft 72 belonging to a reverse brake 70 when the countershaft 48 is driven in the opposite direction.
- the brake shaft 72 is flanged to the outer liner 66 and carries a rotor 74 which is connected to the brake shaft 72 for common rotation, for example by a multi-groove profile, and is enclosed by a stator 76.
- the return brake 70 is a converted viscous coupling, as is usually used in drive trains of motor vehicles with four-wheel drive.
- the conversion measure can be limited to the fact that the coupling part of a commercially available viscous coupling provided according to the invention as the stator 76 is provided with a flange 78 which is arranged coaxially with the brake shaft 72 and which is screwed onto the stator 76 in the example shown.
- the stator 76 is centered in a bearing 80 with respect to the brake shaft 72 and rotatably held together with the brake shaft 72 after a lock 82 has been released.
- the latch 82 has the task of normally holding the stator 76 against rotation, ie rigidly connecting it to the housing 12 together with the bearing 80.
- the latch 82 has a bolt 84 which is guided in a radially displaceable manner in the housing 12 and normally engages or engages in a seat 86 assigned to the stator 76. 1 and 2, the seat 86 is a radial bore in the flange 78.
- the bolt 84 could, however, also be guided in a bore of the housing 12 parallel to the brake shaft 72 and accordingly in an axially parallel bore or another seat 86 in the flange 78 or intervene in the stator 76 itself.
- the bolt 84 extends through the housing 12 and has a head 88 on the outside thereof.
- a spring 90 is arranged between the housing 12 and the head 88, by means of which the bolt 84 is biased towards the outside in the sense of an unlocking. An unintentional release of the lock 82 is precluded by any safety measure that is in principle arbitrary.
- a cover 92 in the form of a bracket is provided for this purpose attached with screws 94 to the housing 12 and with a seal
- a switch 98 is attached to the cover 97, which releases energy for supplying the aforementioned motor, not shown, only when the latch 84 and the cover 92 assume their normal position as shown, that is to say the lock 82 is effectively and verifiably secured.
- Stator 76 against the shear resistance of the fluid contained in the return brake 70 is rotated somewhat further than has already been done.
- the exemplary embodiment according to FIG. 3 differs from that shown in FIGS. 1 and 2 essentially in that the return brake 70 is a hydrodynamic brake.
- the flange 78 for the bearing 80 and the seat 86 for the bolt 84 are formed directly on the stator 76.
- the recoil brake door panels 70 forming Viskobremse in a conventional manner with the rotor disks 100 and Sta ⁇ 102 of a customary at Viskobremsen type out ⁇ is equipped, in accordance with Figure 3 the rotor blades 104 and stator ⁇ shovel 106 at of provided art hydrodynamic retarders customary construction ⁇ .
- FIG. 4 does not differ from FIG. 3. According to FIG. 4, however, several, for example six, radial cylinders 108 are incorporated into the rotor 74 at equal angular intervals, each of which contains a piston 110. Each piston 110 is biased radially outwards by a spring 112 and is supported by a sliding body 114 on an annular-oval raceway 116 belonging to the stator 76, so that each piston ⁇ ben 110 with every full rotation of the rotor 74 and executing outgoing movement. In addition to the rotor 74, a control body 118 which is resiliently biased axially toward it is arranged and is secured against rotation on the stator 76.
- a throttle point 120 which belongs to a hydraulic circuit, is arranged radially outside of the control body 118.
- This circuit also includes an inlet duct 122, which leads from the locking and brake chamber 20 through the stator 76 and the control body 118 to the cylinder 108, and an outlet duct 124, which leads from the cylinder 108 through the control body 118 and the stator 76 to the throttle point 120 leads.
- an inlet duct 122 which leads from the locking and brake chamber 20 through the stator 76 and the control body 118 to the cylinder 108
- an outlet duct 124 which leads from the cylinder 108 through the control body 118 and the stator 76 to the throttle point 120 leads.
- the directional lock 60 and the reverse brake 70 are installed in the housing 12 from below through an opening closed with a cover 126. Also flanged to the underside of the housing 12 is an adapter 128 coaxial with the linkage 10, which carries the entire drive head and secures it against rotation.
- Sleeve 90 spring lower radial bearing 92 cover
- Thrust bearing 94 screws upper radial bearing 96 seal
- Inner liner 124 outlet channel outer liner 126 cover
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Braking Arrangements (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98956901A EP1029178A1 (de) | 1997-11-05 | 1998-11-02 | Antriebskopf für ein drehantreibbares gestänge, insbes. zum antreiben einer bohrlochpumpe |
BR9813193-1A BR9813193A (pt) | 1997-11-05 | 1998-11-02 | Cabeça de cravação para um fio de tirante adaptado para ser cravado em rotação, especialmente para a cravação de uma bomba com furo inferior |
AU13375/99A AU1337599A (en) | 1997-11-05 | 1998-11-02 | Drive head for a rotary-driven rod assembly, especially for driving a sand pump |
DE19881676T DE19881676D2 (de) | 1997-11-05 | 1998-11-02 | Antriebskopf für ein drehantreibbares Gestänge, insbesondere zum Antreiben einer Bohrlochpumpe |
CA002308164A CA2308164A1 (en) | 1997-11-05 | 1998-11-02 | Drive head for a rotary-driven rod assembly, especially for driving a sand pump |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19748907.9 | 1997-11-05 | ||
DE19748907A DE19748907C1 (de) | 1997-11-05 | 1997-11-05 | Antriebskopf für ein drehantreibbares Gestänge, insbesonders zum Antreiben einer Bohrlochpumpe |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999024717A1 true WO1999024717A1 (de) | 1999-05-20 |
Family
ID=7847708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/006917 WO1999024717A1 (de) | 1997-11-05 | 1998-11-02 | Antriebskopf für ein drehantreibbares gestänge, insbes. zum antreiben einer bohrlochpumpe |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1029178A1 (de) |
CN (1) | CN1278317A (de) |
AR (1) | AR010956A1 (de) |
AU (1) | AU1337599A (de) |
BR (1) | BR9813193A (de) |
CA (1) | CA2308164A1 (de) |
DE (2) | DE19748907C1 (de) |
WO (1) | WO1999024717A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19849756C2 (de) * | 1998-10-28 | 2002-05-29 | Netzsch Mohnopumpen Gmbh | Antriebskopf für ein drehantreibbares Gestänge, insbes. zum Antreiben einer Bohrlochpumpe |
DE102010053901A1 (de) * | 2010-12-09 | 2012-06-14 | Netzsch Oilfield Products Gmbh | Modulare Drehmomentsicherung |
AR085241A1 (es) * | 2012-02-15 | 2013-09-18 | Ener Tools Sa | Disposicion de frenado para cabezales de bombeo |
CN102747994A (zh) * | 2012-07-18 | 2012-10-24 | 哈尔滨工业大学 | 过液式电控分层聚合物配注器 |
FR2997441B1 (fr) * | 2012-10-29 | 2015-03-20 | Leroy Somer Moteurs | Procede de vidage d'un puits de petrole et systeme pour sa mise en oeuvre. |
CN106151052B (zh) * | 2016-08-26 | 2018-12-28 | 韩全伟 | 带有液压、限速、温控防反转功能的地面驱动装置 |
CN106968643A (zh) * | 2017-05-19 | 2017-07-21 | 大庆市晟威机械制造有限公司 | 一种利用液力制动光杆的螺杆泵直接驱动装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3909231A1 (de) | 1989-03-21 | 1990-09-27 | Ohb Opto Elektronik Hydraulik | Selbststeuernde visko-bremse fuer schnelles, stossfreies abbremsen von massen mit hoher kinetischer energie |
GB2299849A (en) | 1995-04-10 | 1996-10-16 | Mono Pumps Ltd | Downhole pump drive head assembly with hydrodynamic retarder |
DE19628950A1 (de) | 1996-07-18 | 1997-05-15 | Voith Turbo Kg | Tiefbohrvorrichtung, Tiefbohrpumpenvorrichtung und Verwendung des hydrodynamischen Retarders zur Kompensation von im Antriebssystem vom Abtrieb ausgelöster Rückstellmomente |
DE19616578C1 (de) | 1996-04-25 | 1997-07-24 | Netzsch Mohnopumpen Gmbh | Antriebskopf für ein drehantreibbares Gestänge, insbesondere zum Antreiben einer Bohrlochpumpe |
-
1997
- 1997-11-05 DE DE19748907A patent/DE19748907C1/de not_active Expired - Fee Related
-
1998
- 1998-11-02 CN CN98810800.3A patent/CN1278317A/zh active Pending
- 1998-11-02 CA CA002308164A patent/CA2308164A1/en not_active Abandoned
- 1998-11-02 BR BR9813193-1A patent/BR9813193A/pt not_active Application Discontinuation
- 1998-11-02 WO PCT/EP1998/006917 patent/WO1999024717A1/de not_active Application Discontinuation
- 1998-11-02 EP EP98956901A patent/EP1029178A1/de not_active Withdrawn
- 1998-11-02 DE DE19881676T patent/DE19881676D2/de not_active Ceased
- 1998-11-02 AU AU13375/99A patent/AU1337599A/en not_active Abandoned
- 1998-11-05 AR ARP980105573A patent/AR010956A1/es unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3909231A1 (de) | 1989-03-21 | 1990-09-27 | Ohb Opto Elektronik Hydraulik | Selbststeuernde visko-bremse fuer schnelles, stossfreies abbremsen von massen mit hoher kinetischer energie |
GB2299849A (en) | 1995-04-10 | 1996-10-16 | Mono Pumps Ltd | Downhole pump drive head assembly with hydrodynamic retarder |
DE19616578C1 (de) | 1996-04-25 | 1997-07-24 | Netzsch Mohnopumpen Gmbh | Antriebskopf für ein drehantreibbares Gestänge, insbesondere zum Antreiben einer Bohrlochpumpe |
DE19628950A1 (de) | 1996-07-18 | 1997-05-15 | Voith Turbo Kg | Tiefbohrvorrichtung, Tiefbohrpumpenvorrichtung und Verwendung des hydrodynamischen Retarders zur Kompensation von im Antriebssystem vom Abtrieb ausgelöster Rückstellmomente |
Also Published As
Publication number | Publication date |
---|---|
CN1278317A (zh) | 2000-12-27 |
AR010956A1 (es) | 2000-07-12 |
BR9813193A (pt) | 2000-08-29 |
AU1337599A (en) | 1999-05-31 |
DE19881676D2 (de) | 2001-03-22 |
DE19748907C1 (de) | 1999-05-12 |
CA2308164A1 (en) | 1999-05-20 |
EP1029178A1 (de) | 2000-08-23 |
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