CN201546954U - Surface driving oil-submersible single-screw pump set - Google Patents
Surface driving oil-submersible single-screw pump set Download PDFInfo
- Publication number
- CN201546954U CN201546954U CN200920251100.6U CN200920251100U CN201546954U CN 201546954 U CN201546954 U CN 201546954U CN 200920251100 U CN200920251100 U CN 200920251100U CN 201546954 U CN201546954 U CN 201546954U
- Authority
- CN
- China
- Prior art keywords
- screw
- polished rod
- rod
- surface driving
- oil
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 230000009189 diving Effects 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000153 supplemental effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000004576 sand Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 23
- 239000010779 crude oil Substances 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 241000283153 Cetacea Species 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The utility model relates to a surface driving oil-submersible single-screw pump set, comprising a surface driving device, a connection transmission gear and a downhole oil production device, wherein the surface driving device comprises an electric motor and a decelerator installed on a public machine frame, a transmission belt, a support and a universal ancillary stay, the connection transmission gear comprises a polished rod positioning device, a polished rod and a sucker rod connected with the polished rod; and the downhole oil production device comprises a screw and a bush connected with the sucker rod. The single-screw pump set is characterized in that: the screw is sleeved in and intermeshed with the bush, the screw and the bush are all has a small lead structure at the screw segment, a limiting suction tube is installed at the suction end of the bush, and an anti-reverse mechanism is installed on the polished rod above the decelerator. The single-screw pump set has advantages of stable performance, perfect sealability, high efficiency, low noise and strong adaptability; the single-screw pump is used to convey mother oil of high viscosity, and light condensate oil, viscous oil and the mother oil containing water and sand can be treated only with one pump, thereby greatly reducing production cost.
Description
Technical field
The utility model belongs to industrial pump and makes the field, particularly relates to the latent oily helical rotor pump group of a kind of ground surface driving.
Background technique
The ground surface driving oily helical rotor pump of diving is applied to the history in existing more than 20 year of petroleum industry as a kind of oil recovery machiner of practicality.Because the structure of helical rotor pump is very simple, therefore is particularly suitable for the oil well of high viscosity, high sand content, and higher working efficiency is arranged.The U.S. one oil company has carried out the oil recovery test under the similarity condition once to ground surface driving latent oily single-screw pump oil production system, electric submersible centrifugal pump and three kinds of oil production equipments of sucker-rod pumping system in the water-drive oil recovery well.Test result shows that the efficient of three kinds of oil production systems is respectively 63.4%, 52.4% and 50.4%, and wherein the latent oily single-screw pump oil production system of ground surface driving is most effective.In addition, the equipment investment expense of the latent oily single-screw pump oil production system of ground surface driving is lower more than 20%～30% than other two kinds of oil production equipments.The latent oily helical rotor pump of at present domestic ground surface driving exists the speed governing difficulty, and problems such as leakage easily take place.And structural parameter optimize inadequately, thereby have influenced mechanical property and the discharge capacity and the sealability of pump, also can influence the operating life of stator liner simultaneously.
Summary of the invention
The utility model for solve the technical problem that exists in the known technology provide a kind of adaptability strong, be convenient to speed governing, efficient and ground surface driving good airproof performance the oily helical rotor pump group of diving.
The utility model for the technological scheme that solves the technical problem that exists in the known technology and take is: the ground surface driving oily helical rotor pump group of diving, comprise surface drive, connect transmission device and downhole oil extraction device, described surface drive comprises motor and the retarder that is installed on the public frame, driving belt, support and universal supplemental support, described connection transmission device comprises by the polished rod positioning device and linking to each other with the retarder main shaft of hollow and fixing polished rod, sucker rod that is connected with polished rod and oil pipe, described downhole oil extraction device comprises the screw and bushing that is connected with sucker rod, it is characterized in that: be coated with a screw rod intermeshing in the described lining with it, screw rod and lining are the little helical pitch structure of spiral section, the lining suction side is equipped with spacing suction pipe, is coated with anti-reverse mechanism on the polished rod above the retarder.
The utility model can also adopt following technological scheme:
Described polished rod lower end and well head joint are provided with the polished rod seal box.
Described support is provided with and leaks the drainage interface.
Described screw rod is a single-head screw.
Described screw rod is a multiple thread screw.
The two-stage sealing is housed in the described polished rod seal box.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme, screw rod is connected with sucker rod by the sucker rod screw thread, sucker rod is simultaneously as flexible shaft, length and well depth adapt, the afterbody sucker rod links to each other with polished rod, and polished rod links to each other with the retarder main shaft of hollow by the polished rod positioning device and be fixing.Lining is connected to well head by oil pipe, and oil pipe is equivalent to the traditional pump housing on the one hand, also plays the effect of conveying crude oil on the other hand.Motor passes to screw rod by surface drive by sucker rod with the pump required drive after slowing down, and can realize the deceleration and the speed governing of drive unit through belt, retarder.Move collection and the conveying that realizes crude oil by screw rod and the lining Seal cage that produces that is meshing with each other.Installed anti-reverse mechanism on the retarder additional, the danger of having avoided possible motor wiring error to cause counter-rotating that screw thread is got loose, oil pipe, sucker rod are the oil field general purpose accessory, and the energy of deformation that anti-reverse mechanism gathers sucker rod when termination of pumping is able to slow release.Above measure to oil extraction, carry, reduce cost, improve the life-span and have positive meaning.Advantage such as the utlity model has stable performance, flow pressure pulsating movement free, efficient height, noise is low, adaptability is strong; Adopt this ground surface driving oily helical rotor pump transfer of highly viscous crude oil of diving, a pump can be realized above-mentioned technology, the efficient height, need not to feed the steam viscosity reduction to the down-hole, and in many sand, high sticking deep-well, directional well, horizontal well, adopt, all obtain good effect, greatly reduced cost of production, improved manufacturing efficiency.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, spacing suction pipe; 2, screw rod; 3, connecting tube; 4, sub-coupling; 5, universal supplemental support; 6, public frame; 7, driving belt; 8, motor; 9, anti-reverse mechanism; 10, polished rod positioning device; 11, retarder; 12, support; 13, polished rod; 14, polished rod seal box; 15, leak the drainage interface; 16, sealing; 17, tubing coupling; 18, sucker rod; 19, lining; 20, oil pipe.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1, the ground surface driving oily helical rotor pump group of diving, comprise surface drive, connect transmission device and downhole oil extraction device, described surface drive comprises the motor 8 that is installed on the public frame 6 and retarder 11, driving belt 7, the support 12 that is connected with public frame 6 and the universal supplemental support 5 that is positioned at the support lower end and links to each other with well mouth of oil well, and described driving belt 7 can adopt belt or synchronous cog belt.Motor passes to screw rod by surface drive by sucker rod with the pump required drive through belt or timing belt, retarder after slowing down, and moves collection and the conveying that realizes crude oil by the be meshing with each other Seal cage of generation of screw rod and lining.Described connection transmission device comprise by polished rod positioning device 10 link to each other with hollow retarder main shaft and fixing polished rod 13, with polished rod by the close-connected sucker rod 18 of screw thread, sucker rod length and well depth are complementary.Polished rod top is provided with polished rod positioning device 10, causes screw thread to get loose for avoiding misoperation, is coated with anti-reverse mechanism 9 on the polished rod above the retarder, can guarantee the reliability of operating like this.Described polished rod lower end and well head joint are provided with polished rod seal box 14, and two-stage sealing 16 is housed in this polished rod seal box.On support 12, be provided with and leak drainage interface 15, in case stopping leak leaks and the realization environmental protection.Described downhole oil extraction device comprises screw rod 2 and the lining 19 that is connected with sucker rod, be coated with a screw rod 2 intermeshing in the described lining with it, described screw rod is a single-head screw, also can be multiple thread screw, screw rod and lining all adopt the little helical pitch structure of spiral section, the lining suction side is equipped with spacing suction pipe 1, and connecting tube 3 upper ends are connected with oil pipe 20 by sub-coupling 4, and oil pipe 20 is connected with polished rod seal box 14 by tubing coupling 17.Motor 8 passes to screw rod 2 by surface drive by sucker rod 18 with the pump required drive through belt 7 or timing belt, retarder 11 after slowing down, and moves collection and the conveying that realizes crude oil by screw rod 2 and lining 19 Seal cage that produces that is meshing with each other.
Working principle of the present utility model is: public frame is connected with well mouth of oil well by tubing coupling (or flange), and fixes by universal supplemental support; The outputting power of motor passes to retarder through driving belt (belt or timing belt), and the hollow spindle of retarder drives the polished rod rotation by the polished rod positioning device; Polished rod, sucker rod, the screw rod that is tightly linked by screw thread constituted a complete axle system.Intermeshing screw and bushing forms the little airtight chamber of some mutual isolation, be transferred medium and in these little airtight chamber, make uniform motion in a straight line to hyperbaric chamber by low-pressure cavity, be transferred medium like this and just flowed to well head continuously by the lining import, the deadweight of screw rod, sucker rod is born by the thrust-bearing in the retarder.Seepage in case take place in the sealing of assembling the two poles of the earth in the polished rod seal box.For preventing the excessive befouling environment of whale crude oil when carrying well, can be at the drainage jointing with flexible pipe with excessive crude oil carrying-off.
Claims (6)
1. a ground surface driving oily helical rotor pump group of diving, comprise surface drive, connect transmission device and downhole oil extraction device, described surface drive comprises motor and the retarder that is installed on the public frame, driving belt, support and universal supplemental support, described connection transmission device comprises by the polished rod positioning device and linking to each other with the retarder main shaft of hollow and fixing polished rod, sucker rod that is connected with polished rod and oil pipe, described downhole oil extraction device comprises the screw and bushing that is connected with sucker rod, it is characterized in that: be coated with a screw rod intermeshing in the described lining with it, screw rod and lining are the little helical pitch structure of spiral section, the lining suction side is equipped with spacing suction pipe, is coated with anti-reverse mechanism on the polished rod above the retarder.
2. the ground surface driving according to claim 1 oily helical rotor pump group of diving, it is characterized in that: described polished rod lower end and well head joint are provided with the polished rod seal box.
3. the ground surface driving according to claim 1 oily helical rotor pump group of diving is characterized in that: described support is provided with and leaks the drainage interface.
4. the ground surface driving according to claim 1 oily helical rotor pump group of diving, it is characterized in that: described screw rod is a single-head screw.
5. the ground surface driving according to claim 1 oily helical rotor pump group of diving, it is characterized in that: described screw rod is a multiple thread screw.
6. the ground surface driving according to claim 2 oily helical rotor pump group of diving is characterized in that: the two-stage sealing is housed in the described polished rod seal box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920251100.6U CN201546954U (en) | 2009-11-30 | 2009-11-30 | Surface driving oil-submersible single-screw pump set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920251100.6U CN201546954U (en) | 2009-11-30 | 2009-11-30 | Surface driving oil-submersible single-screw pump set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201546954U true CN201546954U (en) | 2010-08-11 |
Family
ID=42602125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920251100.6U Expired - Fee Related CN201546954U (en) | 2009-11-30 | 2009-11-30 | Surface driving oil-submersible single-screw pump set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201546954U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927001A (en) * | 2012-11-02 | 2013-02-13 | 中国石油天然气股份有限公司 | Method by utilizing switch reluctance motor speed regulating system for screw pump oil extraction |
| CN105805000A (en) * | 2016-04-15 | 2016-07-27 | 中国石油天然气股份有限公司 | Method for reducing well fluid viscosity of combined chemical flooding screw pump well |
-
2009
- 2009-11-30 CN CN200920251100.6U patent/CN201546954U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927001A (en) * | 2012-11-02 | 2013-02-13 | 中国石油天然气股份有限公司 | Method by utilizing switch reluctance motor speed regulating system for screw pump oil extraction |
| CN102927001B (en) * | 2012-11-02 | 2015-04-22 | 中国石油天然气股份有限公司 | Method by utilizing switch reluctance motor speed regulating system for screw pump oil extraction |
| CN105805000A (en) * | 2016-04-15 | 2016-07-27 | 中国石油天然气股份有限公司 | Method for reducing well fluid viscosity of combined chemical flooding screw pump well |
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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: 20100811 Termination date: 20111130 |