CN201125705Y - Pumping cable wire blowout preventer - Google Patents
Pumping cable wire blowout preventer Download PDFInfo
- Publication number
- CN201125705Y CN201125705Y CNU2007201993341U CN200720199334U CN201125705Y CN 201125705 Y CN201125705 Y CN 201125705Y CN U2007201993341 U CNU2007201993341 U CN U2007201993341U CN 200720199334 U CN200720199334 U CN 200720199334U CN 201125705 Y CN201125705 Y CN 201125705Y
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- China
- Prior art keywords
- seal
- wire rope
- top connection
- cylindrical shell
- moving head
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- Expired - Fee Related
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Abstract
The utility model relates to a wellhead device used for oil pumping and oil swabbing operations, particularly a swabbing wire rope blowout preventer used for sealing a wellhead. The device comprises a cylinder, a sealing cavity, a sealing element, a base of the sealing element, a sealing chuck ring, a lower joint, an upper joint, a hydraulic sealing mechanism and a moving head. Three easy worn out parts which include the sealing element, the base of the sealing element and the sealing chuck ring are axially designed to be a double-valve type structure by the utility model which does not need to remove the top connection of wire rope when changed and can be taken out from the upper part of the wire rope and changed quickly and conveniently. The hydraulic sealing mechanism assists mechanical seal when necessary and makes the seal more reliable. Because of the installation of the moving head, when the axis of the swabbing wire rope is deviated from the axial lead of the wellhead, the wire rope can make the moving head rotate an angle under the co-ordination function of a pin roll and a lantern ring groove, so the sliding friction got from the upper side of the blowout preventer by the wire rope can be changed to rolling friction, which can greatly reduce the abrasion of the wire rope and parts of the blowout preventer. The utility model also can be used to seal an oil pumping feed rod.
Description
Technical field
The utility model relates to oil oil pumping, formation testing swabbing operation wellhead assembly, specifically is a kind of pumping wireline preventer that is used for the well head sealing.
Background technology
When wireline preventer is the oil well swabbing operation, requisite important seal member in the wellhead assembly, the quality of its sealing performance is normally carrying out and on-the-spot sanitation of environment of influence production directly.For a long time, people are seeking suitable structure always, to improve its sealing and reliability.Because what pass through in the middle of the pumping wireline preventer is wire rope, the surface is rough and uneven in surface, easy realization sealing unlike oil pumping polish rod, the radial deformation of seal is relative with the radial load of bearing much bigger during its sealing, correspondingly its axial friction is also much bigger, seal the rate of wear also faster, therefore the requirement to the pumping wireline preventer is: will realize the positiver sealing to wire rope in the pumping process; Can change seal and other consumable accessory quickly and easily; Slow down the as far as possible rate of wear of seal promptly prolongs application life of seal; Reduce the wearing and tearing of the wire rope that just do not causing because of well head to greatest extent to the preventer part.
The pumping wireline preventer generally has two types of mechanical type, fluid pressure types, and its principle is that the seal that the internal diameter of being made by oil resistant rubber and wire rope are complementary is applied axial compression, makes the seal radial dilatancy, realizes sealing thereby wire rope held tightly.In the known technology, seal in the pumping wireline preventer and be positioned at seal the seal joint and the seal seats at two ends all are overall structures up and down, wire rope passes from these parts, make relative reciprocating sliding friction with these parts, cause these parts depreciations very fast, when particularly using old wire rope swabbing operation, it is more serious to wear and tear.When these parts are changed as consumable accessory, need the wire rope upper end is taken apart, these parts are passed from the wire rope upper end take out, therefore very inconvenience replacing often occurs causing the problem of seal failure because replacing is untimely.In addition, when departing from appears in pumping wire rope axis and well head axial line, produce sliding friction between wire rope and the preventer body top, cause wire rope to wear and tear fast, the wire rope of wearing and tearing and seal, seal seats, seal joint reciprocating sliding friction and then cause these part enhance faster wear cause seal failure.
Summary of the invention
The purpose of this utility model provides a kind of pumping wireline preventer that reliable, seal and other consumable accessory are changed the rate of wear of convenient and swift, can slow down seal and other consumable accessory that seals.
Realize that the technical scheme that the utility model purpose is taked is:
A kind of pumping wireline preventer, by cylindrical shell, seal chamber, seal, seal seats, seal joint, lower contact, top connection, hydraulic packing mechanism forms, lower contact is connected with the cylindrical shell lower end, seal chamber is connected with the cylindrical shell upper end, seal seats, seal, seal joint stacks successively from bottom to up to be installed in the seal chamber and with the seal chamber endoporus and is slidingly matched, top connection is connected with seal chamber after compressing the seal joint top, seal seats, seal, all has the endoporus that is complementary with wire rope on the seal joint, wire rope enters from the lower contact bottom, from bottom to top from lower contact, cylindrical shell, seal seats, seal, seal joint, pass in the top connection, it is characterized in that: described seal seats, seal, seal joint is two halves subdivision structure, and seal seats is by barrel support; Described hydraulic packing mechanism is: central tube is positioned at cylindrical shell, the central tube lower end is inserted the lower contact endoporus and is supported by lower contact, between central tube and the lower contact sealing ring is installed, one ring-shaped step is arranged on the central tube cylindrical, ring-shaped step periphery and cylindrical shell endoporus are slidingly matched, between sealing ring is installed, form the ring-type oil pocket between the ring-shaped step lower end of central tube and the lower contact, the pressure oil joint is installed on the cylindrical shell and with oil pocket and is communicated with, between ring-shaped step upper end and the cylindrical shell back-moving spring is installed, central tube top conflict seal seats bottom; Also comprise a moving head, moving head is positioned at the top connection top, insert in the moving head base apertures top connection upper end, have some pin-and-holes radially on the moving head, have the cannelure corresponding with the pin-and-hole position of moving head in the top connection, some bearing pins pass on the moving head that its head stretches in the cannelure of top connection behind the pin-and-hole, and moving head top has support, two bearing pins are installed on the support, are separately installed with interstage sleeve, pulley on two bearing pins.
Be threaded between described top connection and the seal chamber, have the handle that the top connection of making is rotated in the top connection.
Flange is connected between described top connection and the seal chamber.
Operating principle and process:
When carrying out swabbing operation, wire rope drives barrel oil pump and pumps in pit shaft, realize swabbing operation, at this moment liquid is sealed in the wellhead assembly under it by blowout preventer seal in the well, and be transported in the gathering-device, thereby guaranteed normally carrying out and the well site health of swabbing operation by the discharge pipe (not shown).The vital part of pumping wireline preventer is its inner seal, and seal is made by oil resistant rubber, is subjected to axial compression and does the time spent, will be to radially expanding, thus hold wire rope tightly the realization sealing purpose.Have dual mode can realize sealing: the first, can promptly screw top connection mechanically, top connection is exerted pressure to seal joint, acts on seal and makes seal be subjected to compression swelling, thereby realize sealing; The second, the mode by hydraulic pressure, promptly by the pressure oil joint to feeding pressure oil in the oil pocket, pressure oil makes central tube up, promotes the up compressive seal of seal seats, thereby realizes sealing.
During use, the pumping wireline preventer is connected to the well head top by its underpart joint, wire rope is passed in the middle of the pumping wireline preventer.When sealing part abrasion to can not realize positiver sealing the time, remove being connected between seal chamber and the cylindrical shell, can change, seal, seal seats, three consumable accessorys of seal joint are designed to two lobe formula structures vertically, and are very convenient during replacing.When pumping wire rope axis and well head axial line depart from, wire rope acts on interstage sleeve or pulley can make moving head slightly rotate, the sliding friction that wire rope can be subjected to above preventer is converted into rolling friction, thereby has significantly reduced the wearing and tearing of wire rope and the wearing and tearing of preventer component.When back-moving spring used elasticity of a specified duration not enough, auxiliaryly use the mechanical system sealing, can guarantee the reliability that seals to during use, handle to be forwarded and the preventer axis normal, two-handed hand-held handle rotation top connection, very laborsaving.When using hydraulic pressure to realize sealing, in oil pocket, feed pressure oil by the pressure oil joint and get final product.When carrying out swabbing operation, borehole pressure is lower.In order to reduce the wearing and tearing of seal, at this moment should adopt hydraulic way to realize sealing, when wire rope is up, oil-filled the going up of annular oil cavity pressed to realize sealing; When wire rope is descending, make the annular oil cavity release of draining the oil, central tube is got back to original position under the effect of back-moving spring elastic force, and seal resiles under the situation that is not subjected to axial force, thereby unclamps wire rope, reaches the purpose that reduces wear.Because of borehole pressure is lower, liquid is unlikely ejection in the pit shaft.
This pumping wireline preventer is not only applicable to the sealing to wire rope, is applicable to the sealing to oil pumping polish rod yet, that is to say that it also can be used on the producing well.
Beneficial effect: the utility model does not need during replacing the wire rope upper end is connected dismounting because seal, seal seats, three consumable accessorys of seal joint are designed to two lobe formula structures vertically, passes from wire rope top and takes out, and therefore changes convenient and swift.Hydrodynamic seal and Aided Machine sealing in case of necessity, make sealing more reliable, the setting of upper end moving head, when pumping silk reel for rope line and well head axial line depart from, the wire rope effect makes moving head rotate an angle under bearing pin and annular groove mating reaction, thereby the sliding friction that wire rope is subjected to above preventer is converted into rolling friction, significantly reduces the wearing and tearing of wire rope and the wearing and tearing of preventer component.
Description of drawings
Fig. 1 is the utility model embodiment one structural representation.
Fig. 2 is the utility model embodiment two structural representations.
Fig. 3 is an A-A sectional view among Fig. 1.
Fig. 4 is a B-B sectional view among Fig. 1.
Among the figure: the 1-cylindrical shell; The 2-seal chamber; The 3-seal; The 4-seal seats; The 5-seal joint; The 6-central tube; The 7-back-moving spring; 8-pressure oil joint; The 9-lower contact; The 10-O RunddichtringO; The 11-O RunddichtringO; The 12-top connection; The 13-moving head; The 14-bearing pin; The 15-support; The 16-bearing pin; The 17-interstage sleeve; The 18-bearing pin; The 19-pulley; The 20-wire rope; The 21-handle.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Embodiment one: as Fig. 1, Fig. 3, shown in Figure 4, the pumping wireline preventer is mainly by cylindrical shell 1, seal chamber 2, seal 3, seal seats 4, seal joint 5, central tube 6, back-moving spring 7, pressure oil joint 8, lower contact 9, top connection 12, moving head 13 is formed, lower contact 9 is threaded with cylindrical shell 1 lower end, seal chamber 2 is threaded with cylindrical shell 1 upper end, seal seats 4, seal 3, seal joint 5 is two halves subdivision structure and stacks successively from bottom to up and is installed in the seal chamber 2, seal seats 4, seal 3, seal joint 5 is slidingly matched with seal chamber 2 endoporus, seal seats 4, seal 3, all has the endoporus that is complementary with wire rope 20 on the seal joint 5, seal seats 4 is supported by cylindrical shell 1, central tube 6 is positioned at cylindrical shell 1, central tube 6 lower ends are inserted lower contact 9 endoporus and are supported by lower contact 9, between central tube 6 and the lower contact 9 sealing ring 10 is installed, on central tube 6 cylindricals ring-shaped step is arranged, ring-shaped step periphery and cylindrical shell 1 endoporus are slidingly matched, between O RunddichtringO 11 is installed, form the ring-type oil pocket between the ring-shaped step lower end of central tube 6 and the lower contact 9, pressure oil joint 8 is installed on the cylindrical shell 1 and with oil pocket and is communicated with, between ring-shaped step upper end and the cylindrical shell 1 back-moving spring 7 is installed, central tube 6 top conflict seal seats 4 bottoms, top connection 12 compresses behind seal joint 5 tops with between the seal chamber 2 and is threaded, and has the handle 21 that makes its rotation in the top connection 12.Moving head 13 is positioned at top connection 12 tops, insert in moving head 13 base apertures top connection 12 upper ends, have two pin-and-holes radially on the moving head 13, have the cannelure corresponding in the top connection 12 with the pin-and-hole position of moving head 13, two bearing pins 14 pass on the moving head 13 that its head stretches in the cannelure of top connection 12 behind the pin-and-hole, moving head 13 tops have support 15, bearing pin 16 is installed on the support 15,18, bearing pin 16, be separately installed with interstage sleeve 17 on 18, pulley 19, wire rope 20 enters from lower contact 9 bottoms, from bottom to top from lower contact 9, central tube 6, seal seats 4, seal 3, seal joint 5, top connection 12, pass between the center of moving head 13 and interstage sleeve 17 and the pulley 19.
Embodiment two: as shown in Figure 2, be different from embodiment, flange is connected between top connection and the seal chamber, does not promptly have the effect that mechanical compression seals.
Claims (3)
1, a kind of pumping wireline preventer, by cylindrical shell (1), seal chamber (2), seal (3), seal seats (4), seal joint (5), lower contact (9), top connection (12), hydraulic packing mechanism forms, lower contact (9) is connected with cylindrical shell (1) lower end, seal chamber (2) is connected with cylindrical shell (1) upper end, seal seats (4), seal (3), seal joint (5) stacks successively from bottom to up to be installed in the seal chamber (2) and with seal chamber (2) endoporus and is slidingly matched, top connection (12) is connected with seal chamber (2) after compressing seal joint (5) top, seal seats (4), seal (3), all has the endoporus that is complementary with wire rope (20) on the seal joint (5), wire rope (20) enters from lower contact (9) bottom, from bottom to top from lower contact (9), cylindrical shell (1), seal seats (4), seal (3), seal joint (5), top connection is passed in (12), it is characterized in that: described seal seats (4), seal (3), seal joint (5) is two halves subdivision structure, and seal seats (4) is supported by cylindrical shell (1); Described hydraulic packing mechanism is: central tube (6) is positioned at cylindrical shell (1), central tube (6) lower end is inserted lower contact (9) endoporus and is supported by lower contact (9), between central tube (6) and the lower contact (9) sealing ring (10) is installed, on central tube (6) cylindrical ring-shaped step is arranged, ring-shaped step periphery and cylindrical shell (1) endoporus is slidingly matched, between sealing ring (11) is installed, form the ring-type oil pocket between the ring-shaped step lower end of central tube (6) and the lower contact (9), pressure oil joint (8) is installed in cylindrical shell (1) and upward and with oil pocket is communicated with, between ring-shaped step upper end and the cylindrical shell (1) back-moving spring (7) is installed, central tube (6) top conflict seal seats (4) bottom; Also comprise a moving head (13), moving head (13) is positioned at top connection (12) top, insert in moving head (13) base apertures top connection (12) upper end, have some pin-and-holes radially on the moving head (13), has the corresponding cannelure in pin-and-hole position in the top connection (12) with moving head (13), its head stretched in the cannelure of top connection (12) after some bearing pins (14) passed the last pin-and-hole of moving head (13), moving head (13) top has support (15), bearing pin (16) is installed on the support (15), (18), bearing pin (16), (18) be separately installed with interstage sleeve (17) on, pulley (19).
2, pumping wireline preventer according to claim 1 is characterized in that: be threaded between described top connection (12) and the seal chamber (2), have the handle (21) that top connection of making (12) is rotated in the top connection (12).
3, pumping wireline preventer according to claim 1 is characterized in that: flange is connected between described top connection (12) and the seal chamber (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201993341U CN201125705Y (en) | 2007-12-17 | 2007-12-17 | Pumping cable wire blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201993341U CN201125705Y (en) | 2007-12-17 | 2007-12-17 | Pumping cable wire blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201125705Y true CN201125705Y (en) | 2008-10-01 |
Family
ID=39999176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201993341U Expired - Fee Related CN201125705Y (en) | 2007-12-17 | 2007-12-17 | Pumping cable wire blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201125705Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213082A (en) * | 2011-03-23 | 2011-10-12 | 承德市开发区富泉石油机械有限公司 | Capsule type cable control head |
| CN107550531A (en) * | 2017-10-25 | 2018-01-09 | 宁波维尔凯迪医疗器械有限公司 | A kind of slight drag stapler |
| CN110735609A (en) * | 2017-12-01 | 2020-01-31 | 王鲁洋 | Use method of petroleum industrial devices |
-
2007
- 2007-12-17 CN CNU2007201993341U patent/CN201125705Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213082A (en) * | 2011-03-23 | 2011-10-12 | 承德市开发区富泉石油机械有限公司 | Capsule type cable control head |
| CN107550531A (en) * | 2017-10-25 | 2018-01-09 | 宁波维尔凯迪医疗器械有限公司 | A kind of slight drag stapler |
| CN110735609A (en) * | 2017-12-01 | 2020-01-31 | 王鲁洋 | Use method of petroleum industrial devices |
| CN110735609B (en) * | 2017-12-01 | 2021-11-09 | 淮北卓本科技有限责任公司 | Application method of device for petroleum industry |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081001 Termination date: 20101217 |