CN2893227Y - Descaling oil-well pump - Google Patents
Descaling oil-well pump Download PDFInfo
- Publication number
- CN2893227Y CN2893227Y CN 200620090223 CN200620090223U CN2893227Y CN 2893227 Y CN2893227 Y CN 2893227Y CN 200620090223 CN200620090223 CN 200620090223 CN 200620090223 U CN200620090223 U CN 200620090223U CN 2893227 Y CN2893227 Y CN 2893227Y
- Authority
- CN
- China
- Prior art keywords
- plunger
- oil well
- well pump
- oil
- scale removal
- 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
Abstract
An anti-scaling oil well pump comprises a pump tube assembly, a plunger piston assembly, a fixed valve assembly and an oil transmission pipe assembly, and is characterized in that: the tube length of the pump tube assembly is smaller than that of the plunger piston, while an anti-scaling ring is provided at the two ends of the pump tube and one end of the plunger piston is provided with an oil outlet valve with a valve ball. The utility model has the beneficial effect as follows: to effectively solve the problems of forming scale at the inner surface of the oil well pump tube and the outer surface of the plunger piston and depositing sand grains, to reduce the liquid flowing resistance of the oil well pump, to avoid pump blocking from occurring and to prolong the service life of the oil well pump.
Description
Technical field
The utility model relates to a kind of liquid pump, particularly from the oil well pump of depths lifting fluid.
Background technique
At present, the most of oil fields of China have entered the later stage mining phase, in order to improve oil production, the normal solution that adopts is: regularly inject a large amount of water and the three elements material that strengthens oil-displacement capacity to oilbearing stratum, the adding of these compositions, influence to oil well pump is very big, can generate a large amount of dirts at outer plunger surface and pump barrel internal surface deposition, has a strong impact on the oil well pump proper functioning.
Existing oil well pump adopts the brief piston structure of long pump more, and the gap of pump barrel and plunger contact segment is little, the two phase mutual friction, and dirt is difficult to accumulate.But non-contact part is after just easily fouling, especially oil well pump quit work for a long time, and the fouling of pump barrel internal surface is serious, removes very difficultly, causes oil well pump to move.In addition,, make plunger to-and-fro motion resistance become big because the injection of three elements material has increased viscosity of crude, when sucker rod is descending bending excessive, cause easily that sucker rod and transport pipe are collided, friction and rod broken.
Summary of the invention
The purpose of this utility model is to provide a kind of scale removal oil well pump, and this oil well pump can scale removal, again can sand control, simultaneously can be under the higher environment of viscosity of crude proper functioning.
The technological scheme that the utility model is taked is: a kind of scale removal oil well pump, comprise pump barrel assembly, plunger piston assembly, standing valve assembly, transport pipe assembly, it is characterized in that pump barrel stack shell length less than plungers length, the pump barrel two ends are provided with the scale removal ring, and the outlet valve of band valve ball is set at plunger one end.
The plunger upper end is connected with and can drives the spherical joint that plunger rotates freely.The oil duct of screw thread plunger connector is a tapered channel.The oil input channel of standing valve cover is streamlined, exports to be the blossom type hole.Plunger lower end oil inlet hole is a round taper hole.Oil outlet on the discharge outlet is an inclined hole, and radially becomes the 10-20 degree.
Oil well pump adopts long-plunger, short pump barrel structure, during the plunger to-and-fro motion, makes the pump barrel total inner surface be in Frotteurism all the time, has reduced the possibility of pump barrel internal surface fouling.During shutdown, pump barrel and plunger gap are less, and the amount of liquid that holds is few, and fouling is lighter, and the surface scale of extension is removed easily.The pump barrel two ends are provided with the scale removal ring that adopts Hardmetal materials to make, and can eliminate the dirt and the sand grains of outer plunger surface when plunger pumps, and avoid the holddown phenomenon, prolong oil well pump working life.By to the oil input channel of plunger lower end oil inlet hole, standing valve cover and improvement that the valve ball that moves about only is installed in the outlet valve of plunger upper end, reduce the flow resistance of liquid in oil well pump, make oil well pump can be in the bigger oil well of viscosity proper functioning.The oil outlet of discharge outlet is an angle, and radially becomes 10-20 °, preferably 15 °, when liquid flows out, applies a peripheral force to plunger.Plunger upper part is equipped with and can drives the spherical joint that plunger rotates freely, and when plunger was descending, plunger can rotate in pump barrel under liquid effects, both can eliminate eccentric wear, can prevent that again plunger from accumulating caused catching phenomenon because of dirt and sand grains.Can also and improve the inlay resultant force that measures such as surface accuracy and surface-coated protective layer reduce pump barrel, plunger and other parts and dirt by selection, prevent fouling.
The beneficial effects of the utility model are: the fouling and the sand grains that effectively solve oil well pump pump barrel internal surface and outer plunger surface accumulate problem, reduce the oil well pump liquid flowing resistance, avoid the holddown phenomenon to take place, and prolong oil well pump working life.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
1 helmet among the figure, tubing coupling on 2,3 rod collars, 4 casing couplings, 5 bulbs, 6 interior covers, 7 nuts, 8 discharge outlets, 9 valve balls that move about, 10 valve seats that move about, 11 internal thread plunger joints, 12 oil pipes, 13 plungers, 14 pump barrel box cuplings, 15 scale removal rings, 16 pump barrels, box cupling under 17 oil pipes, 18 fixed valve balls, 19 standing valve covers, 20 fixed valve bases, 21 fixed valve base joints.
Embodiment
As shown in Figure 1, the scale removal oil well pump is made of pump barrel assembly, plunger piston assembly, standing valve assembly, rotating sphere joint assembly, transport pipe assembly.The pump barrel assembly is made of two pump barrel box cuplings (14), two scale removal rings (15) and pump barrel (16), and the scale removal ring is arranged on the pump barrel two ends, fixes by the pump barrel box cupling that is threaded with pump barrel.Plunger piston assembly is made of outlet valve, screw thread plunger connector (11), plunger (13), outlet valve is made up of discharge outlet (8), the valve ball that moves about (9), the valve seat that moves about (10), outlet valve is arranged on the upper end of plunger, control valve is not established in the lower end, the discharge outlet upper end links to each other with the rotating sphere joint by screw thread, and the lower end joins together by internal thread plunger joint and plunger.The valve seat that moves about is arranged between discharge outlet boss and the screw thread plunger connector, and the valve ball that moves about is housed in the discharge outlet, and four radially oil outlets are established by 90 ° of intervals in its upper end, and this hole is the inclined hole of 15 ° of inclinations.The oil duct of screw thread plunger connector is a tapered channel, and plunger lower end oil inlet hole is a round taper hole.Plunger piston assembly is arranged in the pump barrel, and the length of pump barrel is less than the length of plunger, and plunger is when up and down reciprocatingly moving, and stretch out outside the pump barrel all the time at two ends.The standing valve assembly is made of standing valve cover (19), fixed valve ball (18), fixed valve base (20), standing valve joint (21), standing valve cover links to each other with box cupling (17) under the oil pipe by screw thread, fixed valve ball is housed in it, fixed valve base is arranged between the boss and standing valve joint of standing valve cover, standing valve cover is connected with the standing valve joint screw thread, the oil input channel of standing valve cover is streamlined, exports to be quincunx hole.Rotating sphere joint assembly is made of rod collar (3), casing coupling (4), bulb (5), interior cover (6), nut (7), the rod collar internal thread is connected with the sucker rod of oil well pump, outside thread is connected with casing coupling, the outside thread of bulb links to each other with the discharge outlet of plunger (8), and by nut check, bulb and in be placed in the casing coupling, formation can drive the spherical joint that plunger freely rotates.The transport pipe assembly comprises transport pipe assembly and following transport pipe assembly, last transport pipe assembly is made of last tubing coupling (2), oil pipe (12), last tubing coupling upper end links to each other with the oil transport pipeline of oil well, and the lower end is connected with oil pipe, and the oil pipe the other end links to each other with the box cupling of oil well pump.Following transport pipe assembly is made of following tubing coupling (17) and oil pipe (12), and following tubing coupling upper end links to each other with the oil well pump box cupling by means of the two ends screw thread of oil pipe, and its lower end links to each other with standing valve by screw thread.
Claims (6)
1, a kind of scale removal oil well pump comprises pump barrel assembly, plunger piston assembly, standing valve assembly, transport pipe assembly, it is characterized in that pump barrel stack shell length less than plungers length, and the pump barrel two ends are provided with the scale removal ring, and the outlet valve of band valve ball is set at plunger one end.
2, scale removal oil well pump according to claim 1 is characterized in that plunger upper end is connected with can drive the spherical joint that plunger rotates freely.
3, scale removal oil well pump according to claim 1, the oil duct that it is characterized in that the screw thread plunger connector is a tapered channel.
4, scale removal oil well pump according to claim 1, the oil input channel that it is characterized in that standing valve cover is streamlined, exports to be the blossom type hole.
5, scale removal oil well pump according to claim 1 is characterized in that plunger lower end oil inlet hole is a round taper hole.
6, scale removal oil well pump according to claim 1 is characterized in that the oil outlet on the discharge outlet is an inclined hole, and radially becomes the 10-20 degree.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200620090223 CN2893227Y (en) | 2006-04-02 | 2006-04-02 | Descaling oil-well pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200620090223 CN2893227Y (en) | 2006-04-02 | 2006-04-02 | Descaling oil-well pump |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2893227Y true CN2893227Y (en) | 2007-04-25 |
Family
ID=38061389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 200620090223 Expired - Fee Related CN2893227Y (en) | 2006-04-02 | 2006-04-02 | Descaling oil-well pump |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2893227Y (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102562542A (en) * | 2010-12-29 | 2012-07-11 | 中船重工中南装备有限责任公司 | Sand-preventing scale-preventing oil well pump with long plunger piston |
-
2006
- 2006-04-02 CN CN 200620090223 patent/CN2893227Y/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102562542A (en) * | 2010-12-29 | 2012-07-11 | 中船重工中南装备有限责任公司 | Sand-preventing scale-preventing oil well pump with long plunger piston |
CN102562542B (en) * | 2010-12-29 | 2015-09-02 | 中船重工中南装备有限责任公司 | Sand-preventing scale-preventing oil well pump with long plunger piston |
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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: 20070425 |