CN201610741U - Paraffin removal device in pit shaft for sucker rod - Google Patents
Paraffin removal device in pit shaft for sucker rod Download PDFInfo
- Publication number
- CN201610741U CN201610741U CN2009201728608U CN200920172860U CN201610741U CN 201610741 U CN201610741 U CN 201610741U CN 2009201728608 U CN2009201728608 U CN 2009201728608U CN 200920172860 U CN200920172860 U CN 200920172860U CN 201610741 U CN201610741 U CN 201610741U
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- CN
- China
- Prior art keywords
- sucker rod
- paraffin removal
- pit shaft
- paraffin
- well head
- 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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Abstract
A paraffin removal device, which is used when a sucker rod is in a pit shaft, is applied to the paraffin removal of the sucker rod extracting oil from an oil field, and belongs to a sucker rod paraffin removal device. The paraffin removal device is characterized in that a paraffin scraper with a sealant core is arranged in a wellhead device; an airtight cylinder is fixed at the lower part of the wellhead device; a valve is fixed on the wall of the airtight cylinder; the airtight cylinder is fixed at the top end of a paraffin removal pipe string comprising a wellhead oil pipe hanger, an oil pipe, a spray nozzle joint, a sucker rod seal joint and a leather cup packer; and the leather cup packer, the sucker rod seal joint, the spray nozzle joint, the oil pipe and the wellhead oil pipe hanger are connected with the paraffin removal pipe string from the bottom up in sequence; and the wellhead oil pipe hanger is arranged in a big wellhead four-way valve. The utility model has the effects that paraffin removal during the pulling out process of the sucker rod is realized; the device is pollution-free; the labor intensity is reduced; and the heat utilization is improved.
Description
Technical field
The utility model relates to oil recovery technique field, oil field, particularly oil recovery sucker rod wax removal.Be the paraffin removal unit of a kind of sucker rod in pit shaft.
Background technology
In the process of oilfield exploitation, traditional sucker rod wax removal be a kind ofly both took a lot of work, time-consuming, the thermal efficiency is low, contaminated environment is big flow chart.At present, in the oil field at home, the operation of sucker rod wax removal mainly contains following two kinds of methods:
1, the logical acupuncture manipulation of steam: with taking out the sucker rod of wax deposition in the oil well, be placed on the sucker rod shelf,, rob in thorn under the effect of heating, the wax on sucker rod surface is removed with the wax on the Steam Heating sucker rod outer wall of steam heating boiler car generation.This method mainly contains three point defects: the one, and inefficiency: have only the wax of one side to be eliminated, another side also has the remaining wax of part to exist, and also needs and will use Steam Heating again after the sucker rod upset.The 2nd, the thermal efficiency utilizes low: most heat is by absorption of air.The 3rd, environment pollution is big: the wax of steam water and thawing is fallen on ground, has polluted environment and has increased and received dirty labour intensity.
2, sucker rod is concentrated paraffin removal unit: be sucker rod to be concentrated put into steam heater, feed steam, within a certain period of time with the wax full scale clearance on the beam hanger.Advantage is that wax is removed totally.But, the big cost height of the steam heater volume of employing; Increase freight, increased operating cost.
The utility model content
The purpose of this utility model is: paraffin removal unit in a kind of sucker rod pit shaft is provided, in the process that sucker rod trips out, realizes the sucker rod wax removal from oil well; Realize the pollution-free paraffin removing operation, and reach reduction labour intensity, improve the heat energy utilization rate.
The technical solution adopted in the utility model is: paraffin removal unit in the sucker rod pit shaft, mainly form by wellhead assembly, wax removal tubing string and well head big four, and the steam injection valve is arranged on the well head big four.From steam injection valve steam in jection, steam can enter in the annular space between oil pipe and the sleeve pipe.It is characterized in that: the packing unit paraffin scraper is arranged in wellhead assembly, be fixed with airtight tube in the bottom of wellhead assembly.In the process of carrying on sucker rod, paraffin scraper can scrape a spot of wax liquid that is bonded on the sucker rod wall, flows in the airtight tube of bottom.On airtight barrel, be fixed with valve.Airtight tube is fixed on the top of wax removal tubing string.
The wax removal tubing string is to be connected to form by well head boll-weevil hanger, oil pipe, nozzle connection, sucker rod seal nipple and cup packer, and the wax removal tubing string is connected with cup packer, sucker rod seal nipple, nozzle connection, oil pipe and well head boll-weevil hanger from the bottom up in turn.Well head boll-weevil hanger seat is gone in the well head big four.Annular space between cup packer energy shutoff sleeve pipe and the oil pipe.
The sucker rod packing unit is arranged in the sucker rod seal nipple, can seal sucker rod.Three rounds are arranged on the wall of nozzle connection, and the angle of every round is inequality.The hole of nozzle connection makes annular space and the inner UNICOM of tubing string between sleeve pipe and the oil pipe.
The every row's quantity in hole on the nozzle connection is 3～8, evenly distributes.
Hole on the nozzle connection is obliquely hole from outside to inside, and the angle of inclined hole and center line is between 30～75 degree.
Adopt the interior paraffin removal unit of sucker rod pit shaft to carry out the wax removal process: to consult Fig. 1.At first, trip out 3 sucker rods 12, trip out 2 oil pipes, be lowered to the wax removal tubing string again.7 of cup packers are enclosed on the inwall of sleeve pipe 8.Connect airtight tube 2 and wellhead assembly 1 in the upper end of wax removal tubing string.On the steam injection valve 9 of well head big four 10, connect the steam heating boiler car with steam pipe line.On the valve 11 of airtight tube 2, connect recovery pond with pipeline.At this moment, workover rig is in the preceding state of trip-out wax removal.Secondly, open steam injection valve 9, in the high temperature and high pressure steam sprue bushing and the annular space between the oil pipe that the steam heating boiler car produces.Because cup packer 7 is with the sealing of the annular space bottom between sleeve pipe and the oil pipe, high temperature and high pressure steam enters tubing string inside by nozzle connection 5 holes.The wax deposition of high temperature and high pressure steam on the inner heating sucker rod 12 that rises of tubing string makes the wax deposition fusing.At last, start and carry sucker rod 12 on the workover rig.Sucker rod 12 constantly rises, and carries wax deposition and enters sucker rod seal nipple 6 tops.The wax deposition that enters sucker rod seal nipple 6 constantly is melted, and together makes progress with high steam, enters in the airtight tube 2.The wax that is melted in the airtight tube 2 flows into recovery pond by valve 11.All trip out well head up to the sucker rod 12 that has wax deposition, finish the wax removal work of a bite well sucker rod 12.
The beneficial effects of the utility model: paraffin removal unit in the utility model sucker rod pit shaft, realized wax removal in the process that sucker rod trips out, pollution-free and reduction labour intensity improves the heat energy utilization rate.The characteristics of sucker rod pit shaft wax removal:
Simple to operate: in the process of operation beam hanger wax removal, only need be lowered to two oil pipes and downhole tool, the well head well-head wax removal device of packing into imports sucker rod, realizes that normal sucker rod pulls out of hole, and reaches the purpose of wax removal.
Thermal efficiency height: with the steam of boiler car, inject from the sleeve pipe gate valve of production tree, steam enters oil jacket annular space space, enter oil pipe inner chamber (the nozzle place is connected with cup packer) at tubing string nozzle connection place, in oil pipe, form continuous steam air cushion, because the wax on the sucker rod, be subjected to the steam flush of high temperature (150 ℃) and certain pressure (0.45MPa), form high temperature and certain kick in the short period of time, take wax out of oil pipe, under the effect of wellhead assembly, the inflow surface retracting device.The utilization rate of steam improves 50%, and the wax removal time of having reduced boiler car, the wax removal process does not influence the trip-out speed of sucker rod, and the wax of removing reaches more than 95%, has improved the operating efficiency of wax removal.
Pollution-free operation: reduce labour intensity: owing to adopt pit shaft vapor recycle wax removal, wax recycles pit shaft under the effect of steam and hot water, stopped the pollution on well head and ground, thereby has reduced labour intensity.
On-the-spot simple installation.
Description of drawings
Fig. 1 is a paraffin removal unit structural profile schematic diagram in the utility model sucker rod pit shaft.
Among the figure, 1. wellhead assembly, 2. airtight tube, 3. well head boll-weevil hanger, 4. oil pipe, 5. nozzle connection, 6. sucker rod seal nipple, 7. cup packer, 8. oil pipe, 9. steam injection valve, 10. well head big four, 11. valves, 12. sucker rods.
Fig. 2 is the packing unit paraffin scraper generalized section in the wellhead assembly 1.
The specific embodiment
Embodiment 1: with a bite oil well is example, and paraffin removal unit in the utility model sucker rod pit shaft is described in further detail.
Consult Fig. 1.Paraffin removal unit in the utility model sucker rod pit shaft mainly is made up of wellhead assembly 1, wax removal tubing string and well head big four 10, and a steam injection valve 9 is arranged on well head big four 10.A packing unit paraffin scraper is arranged in wellhead assembly 1, be fixed with an airtight tube 2 in the bottom of wellhead assembly 1.On airtight tube 2 walls, be fixed with valve 11.Airtight tube 2 is fixed on the top outer wall of wax removal tubing string.
The wax removal tubing string is to be connected into by well head boll-weevil hanger 3, oil pipe 4, nozzle connection 5, sucker rod seal nipple 6 and cup packer 7, and the wax removal tubing string is connected with a cup packer 7, sucker rod seal nipple 6, nozzle connection 5, oil pipe 4 and a well head boll-weevil hanger 3 from the bottom up in turn.3 of well head boll-weevil hangers are gone in the well head big four 10.Annular space between cup packer 7 energy shutoff sleeve pipes and the oil pipe.
A sucker rod packing unit is arranged in sucker rod seal nipple 6.Three rounds are arranged on the wall of nozzle connection 5, and the angle of every round is inequality.Hole on the nozzle connection 5 is obliquely hole from outside to inside, and the angle of inclined hole and center line is respectively 30 degree, 45 degree and 75 degree.The hole of nozzle connection 5 makes annular space and the inner UNICOM of tubing string between sleeve pipe 8 and the oil pipe.The quantity in the hole on the nozzle connection 5 is 18,6 holes of promptly every row, and the diameter in hole is 4 millimeters, 18 holes are evenly distributed on the wall of nozzle connection 5.
Claims (5)
1. paraffin removal unit in the sucker rod pit shaft, mainly form by wellhead assembly (1), wax removal tubing string and well head big four (10), steam injection valve (9) is arranged on well head big four (10), it is characterized in that: in wellhead assembly (1), the packing unit paraffin scraper is arranged, be fixed with airtight tube (2) in the bottom of wellhead assembly (1), be fixed with valve (11) on airtight tube (2) wall, airtight tube (2) is fixed on the top of wax removal tubing string;
The wax removal tubing string is to be connected to form by well head boll-weevil hanger (3), oil pipe (4), nozzle connection (5), sucker rod seal nipple (6) and cup packer (7), the wax removal tubing string is connected with cup packer (7), sucker rod seal nipple (6), nozzle connection (5), oil pipe (4) and well head boll-weevil hanger (3) from the bottom up in turn, and well head boll-weevil hanger (3) seat is gone in the well head big four (10).
2. paraffin removal unit in the sucker rod pit shaft according to claim 1 is characterized in that: in sucker rod seal nipple (6) the sucker rod packing unit is arranged.
3. paraffin removal unit in the sucker rod pit shaft according to claim 1 and 2, it is characterized in that: three rounds are arranged on the wall of nozzle connection (5), and the angle of every round is inequality.
4. paraffin removal unit in the sucker rod pit shaft according to claim 3, it is characterized in that: the every row's quantity in the hole on the nozzle connection (5) is 3～8, evenly distributes.
5. paraffin removal unit in the sucker rod pit shaft according to claim 3 is characterized in that: the hole on the nozzle connection (5) is obliquely hole from outside to inside, the angle of inclined hole and center line be 30～75 spend between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201728608U CN201610741U (en) | 2009-08-14 | 2009-08-14 | Paraffin removal device in pit shaft for sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201728608U CN201610741U (en) | 2009-08-14 | 2009-08-14 | Paraffin removal device in pit shaft for sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201610741U true CN201610741U (en) | 2010-10-20 |
Family
ID=42961373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201728608U Expired - Fee Related CN201610741U (en) | 2009-08-14 | 2009-08-14 | Paraffin removal device in pit shaft for sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201610741U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306640A (en) * | 2013-07-04 | 2013-09-18 | 东北石油大学 | Fluid power paraffin removal device of rodless pump oil recovery system |
| CN103806868A (en) * | 2014-02-17 | 2014-05-21 | 中国石油天然气股份有限公司 | Oil tube rapid stabbing-washing wax removing device |
| CN110043213A (en) * | 2019-04-12 | 2019-07-23 | 中国石油天然气股份有限公司 | A kind of sucker rod well-head protective device |
| CN110984916A (en) * | 2020-02-04 | 2020-04-10 | 东北石油大学 | Turbine-driven thermal mass spraying and melting type flow guide wax scraping device |
| CN112392419A (en) * | 2020-11-23 | 2021-02-23 | 大庆油田有限责任公司 | Online paraffin removal and collection device for inner wall of oil pipe of oil field operation wellhead |
-
2009
- 2009-08-14 CN CN2009201728608U patent/CN201610741U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306640A (en) * | 2013-07-04 | 2013-09-18 | 东北石油大学 | Fluid power paraffin removal device of rodless pump oil recovery system |
| CN103306640B (en) * | 2013-07-04 | 2015-07-29 | 东北石油大学 | Rodless pump oil extraction system fluid power paraffin removal unit |
| CN103806868A (en) * | 2014-02-17 | 2014-05-21 | 中国石油天然气股份有限公司 | Oil tube rapid stabbing-washing wax removing device |
| CN110043213A (en) * | 2019-04-12 | 2019-07-23 | 中国石油天然气股份有限公司 | A kind of sucker rod well-head protective device |
| CN110984916A (en) * | 2020-02-04 | 2020-04-10 | 东北石油大学 | Turbine-driven thermal mass spraying and melting type flow guide wax scraping device |
| CN112392419A (en) * | 2020-11-23 | 2021-02-23 | 大庆油田有限责任公司 | Online paraffin removal and collection device for inner wall of oil pipe of oil field operation wellhead |
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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: 20101020 Termination date: 20120814 |