AU2011355372A1 - Sealing system for borehole pumps - Google Patents
Sealing system for borehole pumps Download PDFInfo
- Publication number
- AU2011355372A1 AU2011355372A1 AU2011355372A AU2011355372A AU2011355372A1 AU 2011355372 A1 AU2011355372 A1 AU 2011355372A1 AU 2011355372 A AU2011355372 A AU 2011355372A AU 2011355372 A AU2011355372 A AU 2011355372A AU 2011355372 A1 AU2011355372 A1 AU 2011355372A1
- Authority
- AU
- Australia
- Prior art keywords
- sealing
- sealing system
- skirt
- base
- borehole
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 95
- 230000003068 static effect Effects 0.000 claims description 8
- 238000005086 pumping Methods 0.000 description 5
- 230000006978 adaptation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method 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
- 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
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
- F04B53/164—Stoffing boxes
-
- 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
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/08—Wipers; Oil savers
- E21B33/085—Rotatable packing means, e.g. rotating blow-out preventers
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Devices (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Gasket Seals (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention relates to a sealing system for sealing a drive head of a borehole pump relative to a borehole. The drive head consists of a drive and a casing. The sealing system is disposed on a base of the casing, wherein a polished rod extends through the sealing system. The sealing system is releasably connected to the base of the casing.
Description
V 954 DE Modular sealing element SEALING SYSTEM FOR BOREHOLE PUMPS 5 The present invention relates to a sealing system for sealing the drive of borehole pumps against the borehole. American patent specification US 5,711,533 discloses a sealing arrangement for an oil pumping system with a device for orientating the polished rod.The sealing arrangement is constituted by two components.The two components are connected L ovia flanges.Disposed between the flanges is a static seal which seals the flanges against one another.The lower part of the sealing arrangement is provided with a thread and is connected to the blowout preventer of the oil pumping system. American patent specification US 7,337,851 discloses a drive unit for an oil pumping system, wherein the sealing unit is disposed directly beneath the polished rod clamp, LS on a hollow shaft.Both components are located above the hydraulic drive motor.By means of this arrangement, it is possible to exchange parts of the sealing unit without having to dismantle the drive. Canadian patent specificationCA 2 515 616 C discloses a sealing arrangement, wherein a plurality of sealing rings are disposed one behind the other in order that no o leakage is produced when an individual sealing ring becomes worn.A check is made through a maintenance hole behind the active sealing ring to establish whether sufficient tightness still exists, otherwise one of the additional sealing rings becomes active. Many devices and methods are known from the prior art with which the drive head of .s a borehole pump can be sealed against the borehole.A drawback with these devices is that there are rigidly connected to the skirt or the drive head and cannot be replaced.An adaptation of the sealing unit to different sizes and dimensions of the polished rod is likewise not possible with the known systems according to the prior art.
V 954 DE Modular sealing element The problem underlying the invention, therefore, is to create a sealing system with which the drive head of a borehole pump can be sealed economically and securely against the borehole and which can be adapted for polished rods with different external diameters. 5 The above problem is solved by a sealing system which comprises the features of claim 1 Further advantageous embodiments can be found in the features of the sub claims. A sealing system for sealing a drive head of a borehole pump against a borehole is disclosed.The drive head of the borehole pump comprises a drive and a so-called t o skirt.The skirt is disposed below a housing subassembly to which the drive is linked.The skirt comprises the skirt frame, a dynamic seal and a bearing bush for the guidance of the polished rod.The external structure of the skirt is designed in such a way that all the occurring forces from or on the borehole can be transmitted via the connection flange without a safety risk.The sealing system is disposed on a base of the skirt, wherein a polished rod for transmitting the drive forces to the borehole pump in the borehole runs through the sealing system.The sealing system is connected detachably to the base of the skirt. The sealing system is provided at an underside with a connection element, with which the sealing system is connected detachably in a form-fit and friction-locked 2 manner to the base of the skirt.in a preferred embodiment, the connection element is a flange and/or a thread-rated connection element.A thread-rated connection element is understood, for example, to mean a flange which is provided at its outer side with a thread which can be screwed into the base of the skirt. A static sealing element is disposed between the connection element and the base of 5 the skirt.In a preferred embodiment, the static sealing element is constituted as an 0 ring or as a flat sealing ring.Furthermore, the sealing system comprises a dynamic sealing element.The dynamic sealing element is a stuffing-box sealor a sliding ring seal.According to the invention, a dynamic sealing element is understood to mean an element with which mobile parts, such as for example the rotating polished rod, can o0 be sealed.A static sealing element is understood, for example, to mean O-rings or flat sealing rings which seal immobile components against one another, such as the sealing system and the skirt. An internal diameter of the dynamic sealing element can be adapted in such a way that polished rods with different external diameters can be sealed with the sealing 2 V 954 DE Modular sealing element system.In a further embodiment, the complete sealing system comprising the skirt is dismantled and replaced by a sealing system with a different internal diameter. Polished rods with different external diameters can also be sealed by means of this modular design.Both embodiments have the advantage during the 5 production of the drive head that the skirt can always be provided with the same base no matter how large the drive and therefore the diameter of the polished rod. Examples of embodiment of the invention and its advantages will be 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 L o actual size ratios, since some forms are represented simplified and other forms, for the sake of better clarity, magnified in relation to other elements. Fig. shows the position of the sealing system according to the invention in the drive head. Fig. 2 shows the sealing system according to the invention in a cross-sectional L5 representation. Fig. shows the position of sealing system 20 according to the invention in drive head 10 in a pumping system. Drive head 10 essentially comprises drive 16 and skirt 22, in which further components can be accommodated.The drive energy is transmitted from drive 16 to polished rod 26.Polished rod 26 is connected to borehole 20 pump 12, which is located in borehole 14.Borehole pump 12 is driven by polished rod 26.In order to seal drive head 10 against borehole 14, a sealing system 20 is connected to base 24 of skirt 22.The structure and function of sealing system 20 is described in greater detail infig. 2. Fig. 2shows sealing system 20 according to the invention in a cross-sectional s representation.Sealing system 20 is connected by means of connection element 32 to base 24 of skirt 22.1n the example of embodiment represented, connection element 32 comprises a flange connection, wherein sealing system 20 is connected detachably by screws 28 to base 24.In order to ensure that no liquid can escape between skirt 22 and sealing system 20, sealing system 20 is provided with a static .0 sealing element 34 at its underside 30, which is inserted into base 24 of skirt 22.Polished rod 26 is sealed against the borehole (not represented) by a dynamic sealing element 36.In a preferred embodiment, dynamic sealing element 36 is a 3 V 954 DE Modular sealing element stuffing-box seal.Sealing system 20 is characterised in that it can be adapted to different polished rods 26 and/or boreholes.This takes place by the fact that internal diameter ID of dynamic sealing element 36 is adapted to external diameter AD of polished rod 26.In the eventof pumping medium nonetheless escaping out of sealing 5 system 20, the latter is provided with a leakage drain 18. The invention has been described by reference to a preferred embodiment. 4 V 954 DE Modular sealing element List of reference numbers 10 Drive head 12 Borehole pump 14 Borehole 16 Drive 18 Leakage drain 20 Sealing system 22 Skirt 24 Base of skirt 26 Polished rod 28 Screws 30 Underside 32 Connection element 34 Static sealing element 36 Dynamic sealing element ID Internal diameter AD External diameter
Claims (8)
1. A sealing system (20) for sealing a drive head (10) of a borehole pump (12) against a borehole (14), wherein the drive head (10) comprises a drive (16) 5 and a skirt (22), wherein the sealing system (20) is disposed on a base (24) of the skirt (22) and wherein a polished rod (26) runs through the sealing system (20), characterised in thatthe complete sealing system (20) is connected detachably to the base (24) of the skirt (22).
2. The sealing system (20) according to claim 1, characterised in thatthe L O sealing system (20) is provided at an underside (30) with a connection element (32), with which the sealing system (20) is detachably connected in a form-fit and friction-locked manner to the base (24) of the skirt (22).
3. The sealing system (20) according to claim 2, characterised in thatthe connection element (32) is a flange and/or a thread-rated connection element. L5
4. The sealing system (20) according to any one of claims 1 to 3, characterised in thata static sealing element (34) is disposed between the connection element(32) and the base (24) of the skirt (22).
5. The sealing system (20) according to claim 4, characterised in thatthe static sealing element (34) is an O-ring or a flat sealing ring. .0
6. The sealing system (20) according to any one of claims 1 to5, characterised in thatthe sealing system (20) comprises a dynamic sealing element (36).
7. The sealing system (20) according to claim6, characterised in thatthe dynamic sealing element (36) is a stuffing-box seal or a sliding ring seal.
8. The sealing system (20) according to claim7, characterised in thatan internal .5 diameter (ID) of the dynamic sealing element (36) can be adapted in such a way that polished rods (26) with different external diameters (AD) can be sealed with the sealing system (20). 6 V 954 DE Modular sealing element Abstract A sealing system for sealing a drive head of a borehole pump against a borehole is disclosed. The drive head comprises a drive and a skirt. The sealing system is B disposed on a base of the skirt, wherein a polished rod runs through the sealing system. The sealing system is connected detachably to the base of the skirt. Fig. 1 '7
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010053900A DE102010053900B4 (en) | 2010-12-09 | 2010-12-09 | Sealing system for borehole pumps |
| DE102010053900.7 | 2010-12-09 | ||
| PCT/DE2011/002088 WO2012095070A2 (en) | 2010-12-09 | 2011-12-07 | Sealing system for borehole pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2011355372A1 true AU2011355372A1 (en) | 2013-07-04 |
Family
ID=45562048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2011355372A Abandoned AU2011355372A1 (en) | 2010-12-09 | 2011-12-07 | Sealing system for borehole pumps |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2649267A2 (en) |
| CN (1) | CN103403290A (en) |
| AU (1) | AU2011355372A1 (en) |
| DE (1) | DE102010053900B4 (en) |
| WO (1) | WO2012095070A2 (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2131927A (en) * | 1934-11-23 | 1938-10-04 | Ig Farbenindustrie Ag | Stuffing box for liquid pumps |
| CS179733B1 (en) * | 1975-10-30 | 1977-11-30 | Frantisek Pochyly | Hanging apparatus, especially of vertical pumps for deep wells and bore holes |
| US4480842A (en) * | 1983-06-27 | 1984-11-06 | Anil Mahyera | Self-aligning stuffing box |
| CN1145456A (en) * | 1995-09-15 | 1997-03-19 | 爱德华·格兰克 | Sealing assembly for rotary oil pumps and method of using same |
| US5711533A (en) * | 1995-12-27 | 1998-01-27 | J.M. Huber Corporation | Oilfield stuffing box with polished rod alignment |
| US6164935A (en) * | 1997-10-03 | 2000-12-26 | Basil International, Inc. | Walking beam compressor |
| US20030214100A1 (en) * | 2002-05-03 | 2003-11-20 | Pippert Frederick B. | Packing seal assembly for use with reciprocating cylindrical bodies |
| US7255163B2 (en) * | 2004-08-10 | 2007-08-14 | Rivard Raymond P | Convertible rotary seal for progressing cavity pump drivehead |
| US7337851B2 (en) * | 2004-09-03 | 2008-03-04 | Weatherford/Lamb, Inc. | Rotating stuffing box with split standpipe |
| CN101341311A (en) * | 2005-12-14 | 2009-01-07 | Sai液压股份有限公司 | Improved gland box for driving head of oil well pump |
-
2010
- 2010-12-09 DE DE102010053900A patent/DE102010053900B4/en active Active
-
2011
- 2011-12-07 AU AU2011355372A patent/AU2011355372A1/en not_active Abandoned
- 2011-12-07 CN CN2011800595261A patent/CN103403290A/en active Pending
- 2011-12-07 WO PCT/DE2011/002088 patent/WO2012095070A2/en active Application Filing
- 2011-12-07 EP EP11815683.5A patent/EP2649267A2/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012095070A3 (en) | 2013-02-21 |
| RU2013131165A (en) | 2015-01-20 |
| CN103403290A (en) | 2013-11-20 |
| WO2012095070A2 (en) | 2012-07-19 |
| DE102010053900B4 (en) | 2012-10-31 |
| DE102010053900A1 (en) | 2012-06-14 |
| EP2649267A2 (en) | 2013-10-16 |
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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 |