CN2427621Y - Short type well head used specially for screw pump - Google Patents
Short type well head used specially for screw pump Download PDFInfo
- Publication number
- CN2427621Y CN2427621Y CN 00208838 CN00208838U CN2427621Y CN 2427621 Y CN2427621 Y CN 2427621Y CN 00208838 CN00208838 CN 00208838 CN 00208838 U CN00208838 U CN 00208838U CN 2427621 Y CN2427621 Y CN 2427621Y
- Authority
- CN
- China
- Prior art keywords
- well head
- packing
- packing box
- screw pump
- utility
- 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.)
- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a special short type well head used for screw pumps. The utility model is composed of a well head speed reducer base, a polished rod, a press cover and a packing box, and is characterized in that the base is fixed by supporting bodies which are uniformly arranged on the ground; an inner cavity of the convex packing box is used for arrangement of packing and is fixed on the inner wall of a concave sealing body after pressing and sealing by the press cover. The packing is arranged in the sealing body, wherein, the sealing body and the packing box are arranged in an oil pipe. The utility model can solve the problems of high, large and complex well head of the screw pumps, high cost and poor running, and has the advantages of the height of the well head degradation, cost reduction, simple and compact structure and big replacement space of the packing.
Description
The utility model relates to the oil well mouth, belongs to the screw pump special low wellhead.
At present the oil field mode of recovering the oil is a lot, and wherein screw pump oil production is wherein a kind of.And the ground driving screw pump oil recovery is exactly by the reducer of driven by motor seat on well head, and oil pumping polish rod drives sucker rod together with the hollow output shaft on the reducer and screw pump gives rise to ground with oil.In fact, the reducer of the hundreds of kilogram weight in the screw bolt well well head seat of honour and the bar of several tons of weights is leant on and liquid is leant on, this must influence the operation stability of well head; Moreover the height from the four-way junction of casing of well head to reducer though taked some reinforcement measures, still exists deficiency generally at 830mm-960mm: 1, there is the unstable phenomenon of sending out rolling of operation in production wellhead, influences the production of oil well; 2, change the packing difficulty.
The purpose of this utility model is to avoid the deficiency of above-mentioned technology, and a kind of stable screw pump special low wellhead of well head that makes is provided.
The purpose of this utility model can reach by the following technical programs: this well head is made up of well head reducer base, polished rod, gland, packing box, base is uniformly distributed in the supporter on ground and fixes, convex packing box inner chamber holding tray velamen convex gland press seal rear thread is fixed on matrix seal inwall, the built-in packing of seal, wherein seal and packing box are all in flowline.
Above-mentioned supporter is 3.
The utility model has following advantage than above-mentioned prior art: because this well head realizes by the secondary seal packing, make the well head height reduce greatly, do not influence fuel-displaced, identical with original effect; Moreover base is fixed by 3 uniform supporters, makes that the degree of operating steadily of well head is very good; The space up and down of changing packing simultaneously increases, and is convenient for changing packing.
Accompanying drawing 1 is that structure of the present utility model is cutd open figure.
Below in conjunction with accompanying drawing the utility model is further described:
As shown in Figure 1, this well head is made up of well head reducer base 1, polished rod 2, gland 3, packing box 4, the screw pump overall height is in the 420mm (not comprising four-way junction of casing etc.), base 1 is fixing by 3 supporters 9 that are uniformly distributed in ground, wherein supporter 9 can adopt column type, make the gap all around of changing packing increase, saved three well head bolts simultaneously; Convex packing box 4 is the primary seal packing box, its inner chamber is placed primary seal packing 5, the sealed packing that is equivalent to one, two original type well heads, convex gland 3 press seal packings 5 rear threads are fixed on matrix seal 8 inwalls, seal 8 built-in packings 7, packing 7 is equivalent to the paraffin valve of original well head, realizes sealing by regulating packing box 4; Packing 5 is realized sealing by regulating gland 3; Wherein seal 8 and packing box 4 all in flowline 11, do not influence fuel-displaced.
During actual the use, align well head seal 8, flowline 11 are welded on the base 1, ordinary production, oil just flows out from flowline 6, does not influence production.
Claims (2)
1, a kind of screw pump special low wellhead, form by well head reducer base (1), polished rod (2), gland (3), packing box (4), it is characterized in that: it is fixing that base (1) is uniformly distributed in the supporter (9) on ground, convex packing box (4) inner chamber is placed packing (5) and is fixed on matrix seal (8) inwall by convex gland (3) press seal rear thread, the built-in packing of seal (8) (7), wherein seal (8) and packing box (4) are all in flowline (11).
2, screw pump special low wellhead according to claim 1 is characterized in that: supporter (9) is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00208838 CN2427621Y (en) | 2000-04-30 | 2000-04-30 | Short type well head used specially for screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00208838 CN2427621Y (en) | 2000-04-30 | 2000-04-30 | Short type well head used specially for screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2427621Y true CN2427621Y (en) | 2001-04-25 |
Family
ID=33576096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00208838 Expired - Fee Related CN2427621Y (en) | 2000-04-30 | 2000-04-30 | Short type well head used specially for screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2427621Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593430A (en) * | 2016-12-13 | 2017-04-26 | 中国石油集团川庆钻探工程有限公司 | Overlapping type sealing device of downhole sampler controlling mechanism |
-
2000
- 2000-04-30 CN CN 00208838 patent/CN2427621Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593430A (en) * | 2016-12-13 | 2017-04-26 | 中国石油集团川庆钻探工程有限公司 | Overlapping type sealing device of downhole sampler controlling mechanism |
| CN106593430B (en) * | 2016-12-13 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Overlapped sealing device for underground sampler control mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |