CN202788776U - Downhole linear pumping unit - Google Patents
Downhole linear pumping unit Download PDFInfo
- Publication number
- CN202788776U CN202788776U CN 201220508633 CN201220508633U CN202788776U CN 202788776 U CN202788776 U CN 202788776U CN 201220508633 CN201220508633 CN 201220508633 CN 201220508633 U CN201220508633 U CN 201220508633U CN 202788776 U CN202788776 U CN 202788776U
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- oil
- screen casing
- linear
- feed
- hole
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Abstract
A downhole linear pumping unit comprises a circular tube linear motor and an oil well pump, wherein the circular tube linear motor is provided with a primary and a secondary. The linear pumping unit is characterized in that the lower end of the primary is connected with a connecting pipe through a connecting pipe joint, a limit sensor is arranged at the lower end of the connecting pipe, and a mooring anchor and a centralizing ring are connected to the lower end of the connecting pipe; an externally-fed oil sieve tube is connected to the upper end of the primary, an oil feed hole is arranged on the side wall of the externally-fed oil sieve tube, the upper end of the externally-fed oil sieve tube is connected with an oil well pump cylinder through an oil well pump joint, and the upper end of the oil well pump cylinder is connected with an oil pipe; and the upper end of the secondary is connected with an internally-fed oil sieve tube, an oil feed hole is arranged on the side wall of the internally-fed oil sieve tube, and the upper end is connected with a plunger joint which is connected with a plunger of the oil well pump. The oil well pump is placed under the liquid level on the lower portion of an oil well, a sucker rod and a ground power and transmission device are not needed, the coverage area is small, a large amount of steel can be saved, the working state is stable and reliable, the maintenance rate is low, the compressive strength is high, the structure is reasonable, and the linear pumping unit is suitable for being popularized and applied.
Description
Technical field
The utility model relates to a kind of oil field equipment oil pumper, particularly a kind of down-hole linear oil pumping machine.
Background technology
The oil production equipment oil pumper kind in existing oil field is a lot, mainly be as main take beam-pumping unit, various structures forming curves circular motion, by quadric chain circular motion is become again the rectilinear motion of sucker rod, reached the purpose of recovering the oil, this mode floor space is large, and the many costs of material with complex structure consumption are high, it is also high to consume energy, and needs frequent maintenance.
Summary of the invention
The utility model provides a kind of down-hole linear oil pumping machine in order to address the above problem, and power consumption simple in structure is low, and it is low to be easy to maintenance cost.
The technical solution adopted in the utility model is: a kind of down-hole linear oil pumping machine, comprise pipe linear electric motors and oil well pump, the pipe linear electric motors are provided with primary and secondary, it is characterized in that elementary lower end is connected with adapter by union nipple, take over the lower end and be provided with limit sensors, take over the lower end and be connected with mooring anchor and centering ring; Elementary upper end is connected with outer oil-feed screen casing, and outer oil-feed screen casing sidewall is provided with fuel feed hole, and outer oil-feed screen casing upper end is connected with oil pump sleeve by the oil well pump joint, and the oil pump sleeve upper end is connected with oil pipe; Secondary upper end is connected with interior oil-feed screen casing, and interior oil-feed screen casing sidewall is provided with fuel feed hole, and the upper end is connected with plunger connector, and plunger connector is connected with oil pump plunger piston.
Described limit sensors is one group of sensor.
Fuel feed hole on the described interior oil-feed screen casing is circular.
Fuel feed hole on the described interior oil-feed screen casing is axial strip.
Fuel feed hole on the described interior oil-feed screen casing evenly distributes on its sidewall axial vane surface.
Described interior oil-feed screen casing, outer oil-feed screen casing and connecting portion thereof place under the liquid level of oil well bottom, and ground is provided with controller, and elementary, limit sensors links to each other with controller by cable.
The utility model adopts the pipe linear electric motors to organically combine as main power machines and oil pump plunger piston, by primary and secondary relative straight reciprocating motion of linear electric motors, need not to add in addition power transmission switching mechanism, can directly drive oil well pump, this oil pumper places under the liquid level of oil well bottom, need not sucker rod and Surface power drive and transmission equipment, floor space is little, can save great deal of steel; Contactless limit sensors control is adopted in secondary reciprocating motion commutation, and the reliable maintenance rate of stable working state is low; Link to each other by inside and outside oil-feed screen casing between oil well pump and pipe linear electric motors, the plunger down initial stage can be by the sieve aperture feed liquor on the interior oil-feed screen casing, this double-decker has namely satisfied the requirement of the fluid flow of oil well pump, has to have solved the requirement that connects compressive strength.This Pumping Unit advantages of simple is easy to safeguard that maintenance cost is low, is suitable for applying.
Description of drawings
Fig. 1 to Fig. 4 is from top to bottom segmentation view of the utility model embodiment.
The number in the figure title: 1 is elementary; 2 levels; 3 union nipples; 4 take over; 5 limit sensors; 6 mooring anchors; 7 centering rings; 8 outer oil-feed screen casings; 9 oil well pump joints; 10 oil pump sleeves; 11 interior oil-feed screen casings; 12 plunger connectors.
The specific embodiment
The utility model embodiment as shown in Figures 1 to 4, this down-hole linear oil pumping machine comprises pipe linear electric motors and oil well pump, the pipe linear electric motors are provided with elementary 1 and secondary 2, and elementary 1 lower end is connected with by union nipple 3 and takes over 4, is used for the space of satisfying secondary stroke needs; Take over 4 lower ends and be provided with limit sensors 5, be used for detecting secondary 2 signal feedback that move to bottom; Take over 4 lower ends and be connected with mooring anchor 6 and centering ring 7, be used for the location; Elementary 1 upper end is connected with outer oil-feed screen casing 8 by joint, and outer oil-feed screen casing 13 sidewalls are provided with fuel feed hole, and fuel feed hole is circular, and outer oil-feed screen casing 8 upper ends are connected with oil pump sleeve 10 by oil well pump joint 9, make the overall structure firm and reliable connection; Secondary 2 upper ends are connected with interior oil-feed screen casing 11 by joint, interior oil-feed screen casing 11 sidewalls are provided with fuel feed hole, fuel feed hole is circular, aperture 0.3-0.5 millimeter, on interior oil-feed screen casing 11 sidewall axial vane surfaces, evenly distribute, guarantee that down stroke starting stage fluid can enter interior oil-feed screen casing, oil-feed screen casing 11 can guarantee enough compressive strength as the drive disk assembly of linear electric motors and oil well pump in this structure; Interior oil-feed screen casing upper end is connected with plunger connector 12, is connected with oil pump plunger piston on the plunger connector 12; Oil-feed screen casing 11, outer oil-feed screen casing 8 and connecting portion thereof place under the liquid level of oil well bottom in during use, and ground is provided with controller, and elementary 1, limit sensors 5 links to each other with controller by cable, realizes reciprocating control; Produce travelling-magnetic-field by elementary 1 with secondary 2 relative motions during work and drive secondary 2 straight reciprocating motions, oil-feed screen casing 11 and oil pump plunger piston move back and forth in driving, when descending on the plunger your ball of valve close your ball of lower valve and open, the descending fuel feed hole feed liquor body that begins to see through on outer oil-feed screen casing 8 and the interior oil-feed screen casing 11, down stroke finishes to pass to controller after limit sensors 5 detects signal, controlled again secondary 2 up by controller, your ball pass of lower valve is closed your ball of valve and is opened, down-hole liquid is directly pushed to well head by oil pump plunger piston, enter pumping plant along pipeline, reached the purpose of recovering the oil, this Pumping Unit advantages of simple, be easy to safeguard that maintenance cost is low, is suitable for applying.
Fuel feed hole in when the utility model is implemented on the oil-feed screen casing can be made as axial bar shaped, increases the feed liquor amount in the situation that guarantees structural strength.
Claims (6)
1. down-hole linear oil pumping machine, comprise pipe linear electric motors and oil well pump, the pipe linear electric motors are provided with elementary (1) and secondary (2), it is characterized in that elementary (1) lower end is connected with adapter (4) by union nipple (3), take over (4) lower end and be provided with limit sensors (5), take over (4) lower end and be connected with mooring anchor (6) and centering ring (7); Elementary (1) upper end is connected with outer oil-feed screen casing (8), outer oil-feed screen casing (8) sidewall is provided with fuel feed hole, outer oil-feed screen casing (8) upper end is connected with oil pump sleeve (10) by oil well pump joint (9), and oil pump sleeve (10) upper end is connected with oil pipe; Secondary (2) upper end is connected with interior oil-feed screen casing (11), and interior oil-feed screen casing (11) sidewall is provided with fuel feed hole, and the upper end is connected with plunger connector (12), and plunger connector (12) is connected with oil pump plunger piston.
2. down-hole according to claim 1 linear oil pumping machine is characterized in that described limit sensors (5) is one group of sensor.
3. down-hole according to claim 1 and 2 linear oil pumping machine is characterized in that fuel feed hole on the described interior oil-feed screen casing (11) is for circular.
4. down-hole according to claim 1 and 2 linear oil pumping machine is characterized in that the fuel feed hole on the described interior oil-feed screen casing (11) is axial strip.
5. down-hole according to claim 1 and 2 linear oil pumping machine is characterized in that the fuel feed hole on the described interior oil-feed screen casing (11) evenly distributes on its sidewall axial vane surface.
6. down-hole according to claim 1 and 2 linear oil pumping machine, it is characterized in that described interior oil-feed screen casing (11), outer oil-feed screen casing (8) and connecting portion thereof place under the liquid level of oil well bottom, ground is provided with controller, and elementary (1), limit sensors (5) link to each other with controller by cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220508633 CN202788776U (en) | 2012-11-06 | 2012-11-06 | Downhole linear pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220508633 CN202788776U (en) | 2012-11-06 | 2012-11-06 | Downhole linear pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202788776U true CN202788776U (en) | 2013-03-13 |
Family
ID=47816052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220508633 Expired - Fee Related CN202788776U (en) | 2012-11-06 | 2012-11-06 | Downhole linear pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202788776U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865055A (en) * | 2012-11-06 | 2013-01-09 | 陈天为 | Underground linear pumping unit |
-
2012
- 2012-11-06 CN CN 201220508633 patent/CN202788776U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865055A (en) * | 2012-11-06 | 2013-01-09 | 陈天为 | Underground linear pumping unit |
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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 |
Granted publication date: 20130313 Termination date: 20211106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |