CN202731773U - Double-eccentric correction device of well opening packaging box - Google Patents
Double-eccentric correction device of well opening packaging box Download PDFInfo
- Publication number
- CN202731773U CN202731773U CN 201220243591 CN201220243591U CN202731773U CN 202731773 U CN202731773 U CN 202731773U CN 201220243591 CN201220243591 CN 201220243591 CN 201220243591 U CN201220243591 U CN 201220243591U CN 202731773 U CN202731773 U CN 202731773U
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- China
- Prior art keywords
- eccentric
- pipe nipple
- thread pipe
- steel plate
- doughnut
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- Expired - Fee Related
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Abstract
The utility model provides a double-eccentric correction device of a well opening packaging box, which is applied to a well opening of an oil pumping well and is matched with a well opening device and the packing box. The lower end of an inner thread short section is horizontally welded with a first eccentric annular steel plate and the lower end face of the first eccentric annular steel plate is welded with a tapered outer thread short section; the lower end of the tapered outer thread short section is in threaded connection with a tapered inner thread short section; the lower end of the tapered inner thread short section is horizontally welded with a second eccentric annular steel plate; and an outer thread short section is welded on the lower end face of the second eccentric annular steel plate. The double-eccentric correction device has the effects that in a normal production process of an oil well, a polish rod is aligned with the center of the well opening packaging box, so as to solve the problems that the polish rod and the packaging box are damaged due to that the polish rod and the packaging box are eccentrically abraded, prolong the service life of a packing, reducing times of replacing the packing, guarantee the oil well production rate, improve the oil well yield and reduce the labor intensity of workers.
Description
Technical field
The utility model relates to oil extraction in oil field well head field of mechanical technique, be particularly related to a kind of pumping well head accessory, that a kind of polished rod of pumping well and well head are when misaligning, can adjust polished rod and wellhead packing box centering, the wellhead packing box that solves polished rod and a packing box assembly eccentric wear difficult problem is two eccentric than equipment.
Background technology
At present, in the oil field machinery oil manufacturing process, conventional exploitation method is to carry out oil extraction by means of " three take out " equipment such as oil pumper, sucker rod, oil well pumps.Crude oil from the underground mining to ground, is entered into oil-gas gathering and transportation system.Oil gas moves in the system of sealing, is to realize by the polished rod of sucker rod the top and the packing fitted seal in the packing box.Oil well causes for various reasons in long-term recovery process that well head is crooked, polished rod misaligns with packing box, makes packing install difficulty additional, damages and accelerates, and has shortened the application life of packing, has increased the number of times of replacing packing.When polished rod and packing box centre deviation are heavily tight, cause the Glan eccentric wear in polished rod and the packing box, polished rod and packing box have all been caused damage, increased simultaneously the load of polished rod, reduce the system effectiveness of oil pumper, wasted electric energy.
The utility model content
The purpose of this utility model is: provide a kind of wellhead packing box two eccentric than equipment, generation polished rod and well head misalign when oil well production, when taking other method still can not solve, adopt two off-centre can make polished rod and well head centering than equipment, the application life of extension device, guarantee the normal production of oil well, improve the system effectiveness of rod-pumped well.
The technical solution adopted in the utility model is: wellhead packing box is two eccentric than equipment, comprises internal thread pipe nipple, the first eccentric doughnut-shaped steel plate, conical external screw thread pipe nipple, conical internal thread pipe nipple, the second eccentric doughnut-shaped steel plate and external screw thread pipe nipple.It is characterized in that: there is internal thread internal thread pipe nipple upper end, can be threaded with packing box.At first eccentric doughnut-shaped steel plate of the lower end of internal thread pipe nipple level welding, the distance between the center line of internal thread pipe nipple center line and the first eccentric doughnut-shaped steel plate is between 10～18mm; At conical external screw thread pipe nipple of the lower surface of the first eccentric doughnut-shaped steel plate welding, the center line of conical external screw thread pipe nipple and the first eccentric annular plate centre line are on the same straight line; A conical internal thread pipe nipple is threaded in the lower end of conical external screw thread pipe nipple; At second eccentric doughnut-shaped steel plate of the lower end of conical internal thread pipe nipple level welding, distance between the center line of the second eccentric doughnut-shaped steel plate and the conical internal thread pipe nipple center line is between 10～15mm, at external screw thread pipe nipple of the lower surface of the second eccentric doughnut-shaped steel plate welding, there is external screw thread the lower end of external screw thread pipe nipple, can be connected to the top of wellhead assembly.External screw thread pipe nipple center line and the second eccentric annular plate centre line are on the same straight line; The center line of the center line of internal thread pipe nipple, conical internal thread pipe nipple center line and the second eccentric doughnut-shaped steel plate is in same plane, and the center line of the center line of internal thread pipe nipple and the second eccentric doughnut-shaped steel plate is respectively in the both sides of conical internal thread pipe nipple center line.
The external screw thread pipe nipple is connected to the upper end of wellhead assembly, oil-extractor polish-rod passes external screw thread pipe nipple, conical internal thread pipe nipple and internal thread pipe nipple; The upper end of internal thread pipe nipple connects packing box.According to the centering situation of polished rod and packing box, by adjusting the angle position of two pipe nipples, reach the purpose of polished rod and packing box centering.
The beneficial effects of the utility model: the utility model wellhead packing box is two eccentric than equipment, can make polished rod in the process of operation, all the time be positioned at the position at packing box center, avoided in the oil well production process, the problem of friction occurs in polished rod and packing box assembly.Prolonged the application life of packing, reduced the number of times of changing packing, rate when having guaranteed oil well production has improved oil well output, reduces the reactive power consumption that produces because of polished rod and packing box eccentric wear.Prolong the application life of packing, reduced the number of times of changing packing, reduced employee's labour intensity, improved oil well output, reduced the reactive power consumption that produces because of polished rod and packing box eccentric wear.
Description of drawings
Fig. 1 is the two eccentric calibration apparatus structure generalized sections of the utility model wellhead packing box.
Among the figure, 1 internal thread pipe nipple, 2-the first eccentric doughnut-shaped steel plate, 3-conical external screw thread pipe nipple, 4-conical internal thread pipe nipple, 5-the second eccentric doughnut-shaped steel plate, 6-external screw thread pipe nipple.
The specific embodiment
Embodiment 1: take a wellhead packing box two eccentric than equipment as example, the utility model is described in further detail.
Consult Fig. 1.The utility model wellhead packing box is two eccentric than equipment, comprises internal thread pipe nipple 1, the first eccentric doughnut-shaped steel plate 2, conical external screw thread pipe nipple 3, conical internal thread pipe nipple 4, the second eccentric doughnut-shaped steel plate 5 and external screw thread pipe nipple 6.There is internal thread internal thread pipe nipple 1 upper end of external diameter 65mm, can be threaded with packing box.At internal diameter 40mm of the lower end of internal thread pipe nipple 1 level welding, the first eccentric doughnut-shaped steel plate 2 of external diameter 73mm, the distance between the center line of internal thread pipe nipple 1 center line and the first eccentric doughnut-shaped steel plate 2 is 15mm.At external diameter 73mm of the lower surface of the first eccentric doughnut-shaped steel plate 2 welding, the conical external screw thread pipe nipple 3 of thickness 5.5mm, the center line of conical external screw thread pipe nipple 3 and the first eccentric doughnut-shaped steel plate 2 center lines are on the same straight line; The external diameter 89mm that is threaded in the lower end of conical external screw thread pipe nipple 3, the conical internal thread pipe nipple 4 of thickness 8mm; At internal diameter 50mm of the lower end of conical internal thread pipe nipple 4 level welding, the second eccentric doughnut-shaped steel plate 5 of external diameter 89mm, distance between the center line of the second eccentric doughnut-shaped steel plate 5 and conical internal thread pipe nipple 4 center lines is 13mm, external screw thread pipe nipple 6 at an external diameter 65mm of the lower surface of the second eccentric doughnut-shaped steel plate 5 welding, there is external screw thread the lower end of external screw thread pipe nipple 6, can be connected to the top of wellhead assembly.External screw thread pipe nipple 6 center lines and the second eccentric doughnut-shaped steel plate 5 center lines are on the same straight line; The center line of the center line of internal thread pipe nipple 1, conical internal thread pipe nipple 4 center lines and the second eccentric doughnut-shaped steel plate 5 is in same plane, and the center line of the center line of internal thread pipe nipple 1 and the second eccentric doughnut-shaped steel plate 5 is respectively in the both sides of conical internal thread pipe nipple 4 center lines.
Claims (1)
1. a wellhead packing box is two eccentric than equipment, comprises internal thread pipe nipple (1), the first eccentric doughnut-shaped steel plate (2), conical external screw thread pipe nipple (3), conical internal thread pipe nipple (4), the second eccentric doughnut-shaped steel plate (5) and external screw thread pipe nipple (6); It is characterized in that: there is internal thread internal thread pipe nipple (1) upper end, at first eccentric doughnut-shaped steel plate (2) of the lower end of internal thread pipe nipple (1) level welding, the distance between the center line of internal thread pipe nipple (1) center line and the first eccentric doughnut-shaped steel plate (2) is between 10～18mm; At the lower surface of the first eccentric doughnut-shaped steel plate (a 2) welding conical external screw thread pipe nipple (3), the center line of conical external screw thread pipe nipple (3) and the first eccentric doughnut-shaped steel plate (2) center line are on the same straight line; A conical internal thread pipe nipple (4) is threaded in the lower end of conical external screw thread pipe nipple (3); At second eccentric doughnut-shaped steel plate (5) of the lower end of conical internal thread pipe nipple (4) level welding, distance between the center line of the second eccentric doughnut-shaped steel plate (5) and conical internal thread pipe nipple (4) center line is between 10～15mm, at the lower surface of the second eccentric doughnut-shaped steel plate (a 5) welding external screw thread pipe nipple (6), there is external screw thread the lower end of external screw thread pipe nipple (6), and external screw thread pipe nipple (6) center line and the second eccentric doughnut-shaped steel plate (5) center line are on the same straight line; The center line of the center line of internal thread pipe nipple (1), conical internal thread pipe nipple (4) center line and the second eccentric doughnut-shaped steel plate (5) is in same plane, and the center line of the center line of internal thread pipe nipple (1) and the second eccentric doughnut-shaped steel plate (5) is respectively in the both sides of conical internal thread pipe nipple (4) center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220243591 CN202731773U (en) | 2012-05-28 | 2012-05-28 | Double-eccentric correction device of well opening packaging box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220243591 CN202731773U (en) | 2012-05-28 | 2012-05-28 | Double-eccentric correction device of well opening packaging box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202731773U true CN202731773U (en) | 2013-02-13 |
Family
ID=47657485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220243591 Expired - Fee Related CN202731773U (en) | 2012-05-28 | 2012-05-28 | Double-eccentric correction device of well opening packaging box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202731773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266152A (en) * | 2016-12-30 | 2018-07-10 | 中国石油天然气股份有限公司 | A kind of anti-bias wear packing box |
-
2012
- 2012-05-28 CN CN 201220243591 patent/CN202731773U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266152A (en) * | 2016-12-30 | 2018-07-10 | 中国石油天然气股份有限公司 | A kind of anti-bias wear packing box |
| CN108266152B (en) * | 2016-12-30 | 2024-05-28 | 中国石油天然气股份有限公司 | Anti-eccentric packing box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20210528 |