CN2893227Y - Descaling oil-well pump - Google Patents

Descaling oil-well pump Download PDF

Info

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
Application number
CN 200620090223
Other languages
Chinese (zh)
Inventor
冯金财
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN 200620090223 priority Critical patent/CN2893227Y/en
Application granted granted Critical
Publication of CN2893227Y publication Critical patent/CN2893227Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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

The scale removal oil well pump
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.
CN 200620090223 2006-04-02 2006-04-02 Descaling oil-well pump Expired - Fee Related CN2893227Y (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN109356832B (en) Double-cylinder double-plug double-action valve type plug-valve integrated pump
CN102536142A (en) Method for pumping and washing coal bed methane discharge well uninterruptedly
CN202157790U (en) Oil pumping device without kill operation
CN201554633U (en) Falling object protective oil pump capable of performing annulus logging
CN2893227Y (en) Descaling oil-well pump
CN103015935B (en) One is rod-pulling type expansion pipe structure from top to bottom
CN100460678C (en) Antiscaling alloy oil sucking pump
CN105715523B (en) The anti-sand setting small displacement oil well pump of self-cleaning type
CN202900099U (en) Wellhead device of concentric double-skin tubular column reverse circulation continuous flushing coal powder system
CN201763304U (en) Apparatus integrated with oil pumping pipe string for preventing filth and sand
CN202039791U (en) Built-in fixed sucker rod centralizer
CN201184171Y (en) Bias-wearing-proof pumping unit
CN206972207U (en) A kind of spiral-flow type reducing oil well pump
RU2565947C1 (en) Rod pump unit
CN202731855U (en) Oil pumping unit drive rodless hydraulic oil pumping system
RU2496971C1 (en) Automatic device for bypass of annular gas to tubing string
CN218991840U (en) Valve group offset feedback pump
CN108386159B (en) Automatic convenient control of stretching out of scraper scrapes sand ware
CN201916171U (en) Sand-resistant and dirt-resistant long plunger piston oil pump
CN103388464A (en) Concentric double pipe column reverse circulation continuous coal dust washing system well head device
CN204805079U (en) Prevent grinding partially dark suction pump
CN201062577Y (en) Dirty-scraping oil pump
CN219808985U (en) Underground annular cluster type jet flow drainage and extraction device
CN101769140B (en) Device for displacing oil underground, preventing reflow and automatically relieving pressure
CN201013577Y (en) Electric pump sand prevention device

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