AU2011354298A1 - Dual rotational and axial load pick-up element - Google Patents
Dual rotational and axial load pick-up element Download PDFInfo
- Publication number
- AU2011354298A1 AU2011354298A1 AU2011354298A AU2011354298A AU2011354298A1 AU 2011354298 A1 AU2011354298 A1 AU 2011354298A1 AU 2011354298 A AU2011354298 A AU 2011354298A AU 2011354298 A AU2011354298 A AU 2011354298A AU 2011354298 A1 AU2011354298 A1 AU 2011354298A1
- Authority
- AU
- Australia
- Prior art keywords
- hollow shaft
- polished rod
- screw
- locking screw
- thatthe
- 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.)
- Abandoned
Links
- 230000009977 dual effect Effects 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims description 7
- 239000010779 crude oil Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 2
- 230000004308 accommodation Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
Classifications
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/144—Adaptation of piston-rods
- F04B53/146—Piston-rod guiding arrangements
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/12—Rope clamps ; Rod, casings or tube clamps not secured to elevators
-
- 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
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
-
- 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
Abstract
The invention relates to a device for transmitting torques to a polished rod and for accommodating axial loads of a polished rod and/or a hollow shaft for a borehole pump. The transmission of the torque and/or the accommodation of the axial load is ensured by a dual-action integral device.
Description
V 958 DE Dual rotational and axial load take-up element DUAL ROTATIONAL AND AXIAL LOAD PICK-UP ELEMENT The present invention relates to a device with which axial loads and torques from 5 borehole pumps can be transferred or taken up. American patent US 5,327,961 discloses a drive unit fora borehole pump. In the case of this drive unit, the polished rod is held by a polished rod clamp.The clamp essentially comprises three wedge-shaped elements, which respectively surround 120* of the polished rod.The wedge-shaped elements are connected and fixed to the Lo housing by means of clamping points.For this purpose, the polished rod guide is provided with a shoulder on which the wedge-shaped elements are supported.In order to hold the polished rod in a secure manner, the wedge-shaped elements are provided with axial grooves in the lower region. American patent specification US 6,843,313 describes a drive for pumps in a L5 borehole.In the main, a device is disclosed for protection against rotational and vertical movements of the polished rod, which may occur when replacing the stuffing box for the seal against the borehole.For this purpose, a retaining clip is fixed to the polished rod above the borehole, said retaining clip fixing the polished rod during the assembly. o0 Many devices and methods are known from the prior art with which crude oil conveying pumps can be driven and/or fixed.The taking-up of torques and axial loads in particular presents problems.Highly complex devices are available on the market as a result of these extensive problems. The problem underlying the invention, therefore, is to provide a simplified device, with .s which the torques and axial loads of a drive shaft for borehole pumps can be taken up in an economical, operationally reliable and uncomplicated manner. The above problem is solved by a device for taking up torques and axial loads which comprises the features of claim 1 Further advantageous embodiments can be found in the features of the sub-claims.
V 958 DE Dual rotational and axial load take-up element A further problem of the invention relates to a method with which torques and axial loads of a drive shaft for borehole pumps can be taken up in an economical, operationally reliable and uncomplicated manner. This problem is solved by a method comprising the features of claim9. 5 A device for transferring torques to a polished rod and for taking up axial loads of a polished rod and/or a hollow shaft for a borehole pump is disclosed.The transfer of the torque and/or the taking-up of the axial load is secured by means of a dual acting, one-piece device.The device can preferably be used with borehole pumps in crude oil extraction. It is clear to the person skilled in the art that other fluids can also L. be conveyed out of boreholes using these pumps with which the device according to the invention is used. The take-up or transfer of the axial load of the polished rod is secured by means of a friction-locked connection between the device and the polished rod.The torque can be transferred through a hollow shaft mounting with at least one linear face.The L5 torque transfer takes place here through the corresponding linear faces of the device and the hollow shaft.At least one securing screw for fixing the hollow shaft is provided in the hollow shaft mounting of the device. The device is a clamp, which is provided on an end face with a joint.The width of the joint can be changed by means of at least two locking screws.The distance between 0 the first part and the second part of the device is reduced by tightening up the locking screws.An active interrelationship between the device and the polished rod is produced as a result of this reduction in distance. The screw head of at least a first locking screw is disposed on a first part of the device.The nut of at least one further locking screw is also disposed on the first part 5 of the device.The screw head of at least a second locking screw is disposed on a second part of the device.The nut of at least one further locking screw is also disposed on the second part of the device.Through this offset arrangement of the locking screws and the associated nuts on the device, it is possible to vary the centre of gravity of the device and to adapt it to the requirements of the drive head. . o The first part and the second part of the device are each provided with at least one recess for receiving the screw headof a locking screw.The recess is constituted such that it receives the screw head of the locking screw in a form-fit manner on at least two sides. 2 V 958 DE Dual rotational and axial load take-up element Furthermore, a method for taking up axial loads of a polished rod and/or for transferring torques of a polished rod and/or a hollow shaft in borehole pumps is disclosed.The polished rod is held in a clamping region of the device according to the invention in such a way that the axial loads of the polished rod are taken up.The 5 torques of the polished rod and/or of the hollow shaft are transferred via a hollow shaft mounting.The hollow shaft is secured in the hollow shaft mounting with at least one securing screw.The device comprises a joint, the size of which is reduced by the tightening-up of the at least one locking screw.As a result of this reduction in size, the device is brought into a friction-locked and form-fit active interrelationship with the o polished rod.Only one tool is required to tighten up a nut of the locking screw.This is the case, because the screw head of the locking screws is always introduced into a recess which is only minimally larger than the screw head of the respective locking screw.Rotation of the respective locking screw is therefore impossible. In a preferred embodiment, the device is closed by means of at least two locking screws.The at least two locking screws are introduced here into the device in such a way that the screw head of a first locking screw is located on a first part and the screw head of a second locking screw on a second part of the device.With the use of more than two locking screws, it must be ensured when inserting the locking screws that the centre of gravity of the device lies correctly.This is achieved by the fact that .o the recesses are milled into the device in such a way that the locking screws always have to be introduced correctly into the device. Furthermore, it is possible to introduce the recesses in the case of cast devices directly during the casting.The position of the recesses is already calculated when the device is being designed. It is clear to the person skilled in the art that the positions of the screws and nuts can also be exchanged In this case, the nuts would have to be inserted into the recesses and the screws rotated into the nuts with the one tool. Examples of embodiment of the invention and its advantages are explained in detail below with the aid of the appended figures.The size ratios of the individual elements with respect to one another in the figures do not always correspond to the actual size o ratios, since some forms are represented simplified and other forms, for the sake of better clarity, magnified in relation to the other elements. Fig shows the device according to the invention, which is mounted on a drive unit. Fig. 2 shows the device according to the invention in a three-dimensional view. Fig. 3 shows the device according to the invention in the cross-section of a front view 3 V 958 DE Dual rotational and axial load take-up element Fig. shows a device 10 according to the invention which is mounted on a drive unit 8. The forces required for the drive of the borehole pump are transferred via drive pulley 12 to hollow shaft 42. Hollow shaft 42 emerges into hollow shaft mounting 24 of device 10 and is connected detachably to device 10 by means of at least one 5 securing screw 40.1n clamping region 22, polished rod 20 is held by device 10 in a friction-locked and form-fit manner.The active interrelationship between polished rod 20 and device 10 is achieved by the fact that device 10 is clamped detachably to polished rod 20 by tightening up locking screws 34.The forces which hollow shaft 42 transfers to device 10 via hollow shaft mounting 24 are passed on to polished rod 20 o via clamping region 22 of device 10.The driving linkage (not represented) disposed in the borehole, as well as the rotor of the crude oil conveying pump (not represented), are driven via polished rod 20. The forces transferred with device 10 to hollow shaft 42 relate to the torque and the axial loads.The torque is transferred by drive unit 8 to hollow shaft 42 and from there to hollow shaft mounting 24 of device 10.The axial loads chiefly arise due to the weight of the driving linkage for the rotor of the borehole pump, said driving linkage being fixed to polished rod 20.In addition, there is also a weight component that is created by the material column which rests on the rotor of the borehole pump.The conveying height in particular plays a part here.The higher the material column in the o0 borehole above the rotor, the greater the weight force acting on the rotor and thus via the driving linkage on device 10. Fig. 2shows device 10 according to the invention in a three-dimensional view. Device 10 essentially comprises two partial regions.On the one hand, clamping region 22 for the polished rod (not represented) and on the other hand the region for hollow shaft mounting 24.The polished rod is brought into an active interrelationship with device 10 by clamping.During the clamping, a first part 44 and second part 46 are clamped by means of locking screws 34 in such a way that joint 32, at the end face 30 of device 10, is markedly reduced. For this purpose, at least two locking screws 34 are introduced into device 10.Screw heads 36 sit in recesses 48, which are only slightly .3 larger than the smallest diameter of screw heads 36Locking screws 34 are thus secured against rotation.A further advantage of the arrangement of locking screws 34 in recesses 48 consists in the fact that only one tool is required for the tightening, with which nut 38 of respective locking screw 26 is tightened up.As a result of the 4 V 958 DE Dual rotational and axial load take-up element dual function of device 10, it is possible to transfer the required torques to the borehole pump and to take up the axial loads occurring in the drive system. A hollow shaft (not represented) is used to transfer the torques from the drive motor (not represented) to device 10.This hollow shaft is introduced into hollow shaft 5 mounting 24 of device 10.Provided in the hollow shaft mounting 24 is at least one linear face 26, which forms an active mating with at least one linear face of the hollow shaft In order that the hollow shaft remains connected to hollow shaft mounting 24, the hollow shaft is fixed detachably in device 10 by means of at least one securing screw 40. L n Fig. 3shows device 10 according to the invention in a cross-section of a front view In this figure, it can be seen that device 10 comprises a first part 44 and a second part 46.A joint 32at end face 30 of device 10 can be seen between parts 44 and 46. By the tightening-up of locking screws 34, distance A between first part 44 and second part 46 is reduced in such a way that joint 32 is reduced in size and a polished rod (not L5 represented) is fixed in a friction-locked and form-fit manner In order to take up the torque of the drive, a hollow shaft (not represented) is introduced into hollow shaft mounting 24 and is fixed detachably by means of securing screws 40. The invention has been described by reference to a preferred embodiment.
V 958 DE Dual rotational and axial load take-up element List of reference numbers 8 drive unit 10 device 12 drive pulley 20 polished rod 22 clamping region for polished rod 24 hollow shaft mounting 26 linear face 30 end face 32 Joint 34 locking screw 36 screw head 38 nut 40 securing screw 42 hollow shaft 44 first part 46 second part 48 recess for locking screw A distance 6
Claims (11)
1. A device(10)for transferring torques on a polished rod (20) and for taking up the axial load of a polished rod (20) and/or a hollow shaft (42) in a borehole 5 pump, characterised in that the transfer of the torque and/or the taking-up of the axial load is secured by means of a dual-acting, one-piece device (10), wherein the torque can be transferred through a hollow shaft mounting (24) with at least one linear face (26).
2. The device(10) according to claim 1, characterised in thatat least one L O securing screw (40) for fixing a hollow shaft (42) is provided in the hollow shaft mounting (24) of the device (10).
3. The device (10) according to any one of claims 1 or 2, characterised in thatthe device (10) is a clamp and that the width of the joint (32)of the device(1 0) can be changed by at least two locking screws (34). L5
4. The device (10) according to any one of claims 1 to3, characterised in thata screw head (36) of at least one locking screw (34) is disposed on a first part (44) of the device (10) and that a nut (38) of at least one further locking screw (36) is also disposed on the first part (44) of the device (10).
5. The device (10) according to any one of claims 1 to4, characterised in 0 thatthe screw head (36) of at least one locking screw (34) is disposed on a second part (44) of the device(10) and that the nut (38) of at least one further locking screw (36) is also disposed on the second part (44) of the device (10).
6. The device (10) according to any one of claims 1 to5, characterised in thatthe first part (44) and the second part (46) of the device(10) are each provided with at least one recess (48) for receiving the screw head (36) of a locking screw (34).
7. The device(10) according to claim6, characterised in thatthe recess (48) is constituted such that it receives the screw head (36) of the locking screw (34) in a form-fit manner on at least two sides.
8. The device (10) according to any one of claims 1 to7, characterised in thatthe device (10) can preferably be used with borehole pumps in crude oil extraction. 7 V 958 DE Dual rotational and axial load take-up element
9. A method for taking up axial loads of a polished rod (20) and/or for transferring torques of a polished rod (20) and/or a hollow shaft (42) in borehole pumps with a device (10) comprising the features of claims 1 to8, characterised in that: - a polished rod (20) is held in a clamping region (22)of the device(10) in such a way that the axial loads of the polished rod (20) are taken up; - the torques of the polished rod (20)and/or of the hollow shaft (42)are transferred via a hollow shaft mounting (24); - the hollow shaft (42) is secured with at least one securing screw (40) in L 0 the hollow shaft mounting (24): - the device(10) comprises a joint (32) which is reduced in size by tightening up at least one locking screw (34)and - that only one tool is required for tightening up a nut (38) of the locking screw (34). L l5
10.The method according to claim9, characterised in thatthe device(10) is closed with at least two locking screws (34).
11. The method according to any one of claims9 or 10, characterised in thatthe at least two locking screws (34) are introduced into the device(10) in such a way that the screw head (36) of one locking screw (34) is located on a first no part (44) and the screw head (36) of a second locking screw (34)is located on a second part (46) of the device(1 0). 8
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010052657A DE102010052657A1 (en) | 2010-11-26 | 2010-11-26 | Dual rotary and Axiallastaufnahmeelement |
| DE102010052657.6 | 2010-11-26 | ||
| PCT/DE2011/002036 WO2012092914A2 (en) | 2010-11-26 | 2011-11-24 | Dual rotational and axial load pick-up element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2011354298A1 true AU2011354298A1 (en) | 2013-07-04 |
Family
ID=45787048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2011354298A Abandoned AU2011354298A1 (en) | 2010-11-26 | 2011-11-24 | Dual rotational and axial load pick-up element |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN103328759B (en) |
| AU (1) | AU2011354298A1 (en) |
| DE (1) | DE102010052657A1 (en) |
| WO (1) | WO2012092914A2 (en) |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT281606B (en) * | 1967-02-22 | 1970-05-25 | Emil Lodynski | Polishing rod clamp for deep pump systems |
| US4363357A (en) * | 1980-10-09 | 1982-12-14 | Hunter Joseph M | Rotary drilling head |
| US4372379A (en) * | 1981-10-06 | 1983-02-08 | Corod Manufacturing Ltd. | Rotary drive assembly for downhole rotary pump |
| CA2074013A1 (en) * | 1992-07-16 | 1994-01-17 | Robert A. R. Mills | Brake assembly for rotating rod |
| US5327961A (en) | 1992-09-25 | 1994-07-12 | Mills Robert A R | Drive head for downhole rotary pump |
| US6241016B1 (en) * | 1998-04-03 | 2001-06-05 | R & M Energy Systems | Drive head assembly |
| CA2311036A1 (en) | 2000-06-09 | 2001-12-09 | Oil Lift Technology Inc. | Pump drive head with leak-free stuffing box, centrifugal brake and polish rod locking clamp |
| CN2505810Y (en) * | 2001-05-10 | 2002-08-14 | 大庆油田有限责任公司 | New type screw pump polish rod torque, rotating speed, axial force measuring device |
| CA2455742C (en) * | 2004-01-23 | 2012-01-10 | Kudu Industries Inc. | Rotary drivehead for downhole apparatus |
| EA200602209A1 (en) * | 2004-06-04 | 2007-04-27 | Линн П. Тессье | OPTIMAL COMMUNICATED REACTIVE SYNCHRONOUS MOTOR AND ITS APPLICATION AS A TOP DRIVE FOR A ROTARY PUMP |
| CN2849222Y (en) * | 2005-12-02 | 2006-12-20 | 马力 | Direct driving intelligent screw pump driving device |
| US7673674B2 (en) * | 2006-01-31 | 2010-03-09 | Stream-Flo Industries Ltd. | Polish rod clamping device |
| US8016027B2 (en) * | 2007-07-30 | 2011-09-13 | Direct Drivehead, Inc. | Apparatus for driving rotating down hole pumps |
| US20090065190A1 (en) * | 2007-09-12 | 2009-03-12 | Leslie Dean Smith | Oil well polish rod clamp for use with a rotator on a beam pumping unit |
| CN201695965U (en) * | 2010-01-29 | 2011-01-05 | 中国石油化工股份有限公司 | Rotating device of polished rod |
-
2010
- 2010-11-26 DE DE102010052657A patent/DE102010052657A1/en not_active Withdrawn
-
2011
- 2011-11-24 WO PCT/DE2011/002036 patent/WO2012092914A2/en active Application Filing
- 2011-11-24 CN CN201180056483.1A patent/CN103328759B/en not_active Expired - Fee Related
- 2011-11-24 AU AU2011354298A patent/AU2011354298A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012092914A2 (en) | 2012-07-12 |
| DE102010052657A1 (en) | 2012-05-31 |
| WO2012092914A3 (en) | 2013-04-11 |
| CN103328759B (en) | 2016-04-13 |
| CN103328759A (en) | 2013-09-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PC1 | Assignment before grant (sect. 113) |
Owner name: NETZSCH PUMPEN & SYSTEME GMBH Free format text: FORMER APPLICANT(S): NETZSCH OILFIELD PRODUCTS GMBH |
|
| MK5 | Application lapsed section 142(2)(e) - patent request and compl. specification not accepted |