CN203285669U - Paraffin control anti-scale abrasion resistant oil well pump - Google Patents
Paraffin control anti-scale abrasion resistant oil well pump Download PDFInfo
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- CN203285669U CN203285669U CN2013202548702U CN201320254870U CN203285669U CN 203285669 U CN203285669 U CN 203285669U CN 2013202548702 U CN2013202548702 U CN 2013202548702U CN 201320254870 U CN201320254870 U CN 201320254870U CN 203285669 U CN203285669 U CN 203285669U
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- valve
- plunger
- standing valve
- wear
- oil well
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Abstract
The utility model discloses a paraffin control anti-scale abrasion resistant oil well pump and belongs to the technical field of oil pumping equipment in oil fields. The paraffin control anti-scale abrasion resistant oil well pump comprises a pump barrel. The pump barrel is fixedly connected with a fixed valve cover, a fixed valve is installed in the fixed valve cover, and a plunger is installed in the pump cylinder in a sliding mode. One end, close to the fixed valve, of the plunger is fixedly connected with a plunger closed type valve cover, and the other end of the plunger is fixedly connected with an upper oil outlet head. A lower traveling valve is installed in the plunger closed type valve cover, an upper travelling valve is installed in the upper oil outlet head, a first nonmetal coating is arranged on the surface of a flow channel of a ball cavity of the fixed valve cover, and a second nonmetal coating is arranged on the surface of a flow channel of a ball cavity of the plunger closed type valve cover. The first nonmetal coating and the second nonmetal coating can prevent phenomena of scaling and paraffin precipitation from happening, the flow channel of the fixed valve cover of the oil well pump and the flow channel of the plunger closed type valve cover of the oil well pump are prevented from being blocked, and oil extraction efficiency of an oil well is improved.
Description
Technical field
The utility model belongs to the oil-pumping equipment in oil field technical field, relates in particular to the wear-resisting oil well pump of a kind of wax-proof anti-scaling.
Background technique
Oil well pump be under pumping unit drives well in crude oil give rise to the downhole hardware commonly used on ground.Oil well pump mainly comprises pump barrel, plunger, plunger closed cage, standing valve, standing valve cover and traveling valve, in the course of the work, plunger is driving link, be used for changing the pressure in pump, pump valve is driven member, only when the pressure that meets valve ball below, just open during greater than its top pressure, allow fluid by valve seat orifice to upper reaches, otherwise valve ball is closed and is stoped fluid to dirty.
intensification along with the oil field at home recovery percent, most of oil field has entered the middle and later periods of exploitation, for further stabilized crude (oil) output, improve oil extraction in oil field efficiency, extensive use ternary composite driving (surface active agent, alkali, polymer) technology, because the rock forming mineral in alkali and stratum reacts, destroyed original ionic equilibrium state, form silicic acid in Produced Liquid, calcium carbonate, the salts such as magnesium carbonate mix dirt, mix dirty major sedimentary in the runner in standing valve cover and plunger closed cage ball chamber, cause that the runner area of passage reduces, cause oil recovery efficiency to reduce, in addition, contain a large amount of wax materials in crude oil, these wax materials are set in standing valve cover and plunger closed cage runner when temperature reduces, cause area of passage to reduce, even stop up flow channels, affected normally carrying out of producing, reduced production efficiency of oilfields.
The model utility content
Technical problem to be solved in the utility model is: provide a kind of wax-proof anti-scaling wear-resisting oil well pump, to contain mixing dirt and wax material in the solution oil well produced liquid, cause the standing valve cover of oil well pump and the technical problem that plunger closed cage runner stops up.
for solving the problems of the technologies described above, the technical solution of the utility model is: the wear-resisting oil well pump of wax-proof anti-scaling, comprise pump barrel, described pump barrel is fixedly connected with standing valve cover, in described standing valve cover, standing valve is installed, be slidably fitted with plunger in described pump barrel, described plunger is fixedly connected with the plunger closed cage near an end of described standing valve, the other end is fixedly connected with out oil head, in described plunger closed cage, lower travelling valve is installed, go out in oil head to be equipped with upper travelling valve on described, has the standing valve guide portion in the ball chamber of described standing valve cover, the valve ball of described standing valve guide portion and described standing valve offsets, has the lower travelling valve guide portion in the ball chamber of described plunger closed cage, the valve ball of described lower travelling valve guide portion and described lower travelling valve offsets, water passage surface in the ball chamber of described standing valve cover is provided with the first nonmetallic coating, water passage surface in the ball chamber of described plunger closed cage is provided with the second nonmetallic coating.
As a kind of improvement, described standing valve guide portion is embedded with the first wear-resisting inserting.Described lower travelling valve guide portion is embedded with the second wear-resisting inserting.
As further improvement, the inwall that goes out oil head on described is embedded with the 3rd wear-resisting inserting.
As further improvement, the thickness of described the first nonmetallic coating is 2mm-3mm, and the thickness of described the second nonmetallic coating is 2mm-3mm.
As further improvement, described standing valve comprises the fixed valve base that is connected with described standing valve cover, be provided with nonmetal seal ring between the valve ball of described fixed valve base and described standing valve, the outer ring of described nonmetal seal ring is sandwiched between described fixed valve base and described standing valve cover, and the inner ring of described nonmetal seal ring and the valve ball of described standing valve offset.
After having adopted technique scheme, the beneficial effects of the utility model are: because the water passage surface in the ball chamber of described standing valve cover is provided with the first nonmetallic coating, water passage surface in the ball chamber of described plunger closed cage is provided with the second nonmetallic coating, the smooth surface of the first nonmetallic coating and the second nonmetallic coating, and be difficult for being corroded, make mixing dirt in crude oil and wax material etc. be difficult for sticking to its surface; And the first nonmetallic coating and the second nonmetallic coating poor thermal conductivity, when crude stream out-of-date, temperature can reduce hardly, therefore the salt that is dissolved in crude oil is difficult for separating out, wax in crude oil can not solidify yet, thereby prevent the generation of fouling wax deposition phenomenon, avoided the obstruction of standing valve cover and the plunger closed cage runner of oil well pump, improved the oil recovery efficiency of oil well.
Because described standing valve guide portion is embedded with the first wear-resisting inserting.Described lower travelling valve guide portion is embedded with the second wear-resisting inserting, the first wear-resisting insert and the second wear-resisting inserting reduced the wearing and tearing of standing valve guide portion and lower travelling valve guide portion, and then avoid the valve ball of the valve ball of standing valve in oil recovery process and lower travelling valve move up and down wearing and tearing the first nonmetallic coating and the second nonmetallic coating.
Because the inwall that goes out oil head on described is embedded with the 3rd wear-resisting inserting, the valve ball that greatly reduces upper travelling valve on go out the rate of wear of oil head, avoided oil head and phenomenon of rupture occurred, reduced the field produces cost.
Be provided with nonmetal seal ring between valve ball due to described fixed valve base and described standing valve, at first drop on nonmetal seal ring when the valve ball of standing valve falls, with nonmetal seal ring distending, and forming pre-sealedly between the sphere of valve ball and nonmetal seal ring, the valve ball of standing valve is dropping under the fluid power effect on the sealing surface of fixed valve base afterwards; When oil well pump is containing in sand drain long-term work, the leakage of fixed valve base sealing surface, nonmetal seal ring is squeezed in the angular space that the valve ball of standing valve and fixed valve base upper end form under the fluid pressure effect, form the fluid power self-tightening sealing, the valve ball and the fixed valve base that compensate former standing valve are containing the defect of leaking under sand drain, and sealing effect is good.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A-A sectional view in Fig. 1;
Fig. 3 is B-B sectional view in Fig. 1;
Fig. 4 is C-C sectional view in Fig. 1;
In figure: 1, pump barrel, 2, the pump barrel box cupling, 3, standing valve cover, 4, fixed valve ball, 5, fixed valve base, 6, plunger, 7, the plunger closed cage, 8, go out oil head on, 9, lower travelling valve seat, 10, the lower travelling valve ball, 11, the upper travelling valve seat, 12, upper travelling valve ball, 13, standing valve guide portion, 14, the lower travelling valve guide portion, the 15, first nonmetallic coating, 16, the second nonmetallic coating, 17, the first wear-resisting inserting, the 18, second wear-resisting inserting, 19, rod string, 20, the 3rd wear-resisting inserting, 21, nonmetal seal ring.
Embodiment
, in order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
shown in common as shown in Figure 1 to Figure 4, the wear-resisting oil well pump of wax-proof anti-scaling, comprise pump barrel 1, pump barrel 1 is fixedly connected with standing valve cover 3 by pump barrel box cupling 2, in standing valve cover 3, standing valve is installed, standing valve comprises fixed valve ball 4 and fixed valve base 5, fixed valve base 5 is threaded in standing valve cover 3, be slidably fitted with plunger 6 in pump barrel 1, plunger 6 is fixedly connected with plunger closed cage 7 near an end of standing valve, the other end is fixedly connected with out oil head 8, in plunger closed cage 7, lower travelling valve is installed, lower travelling valve comprises lower travelling valve seat 9 and lower travelling valve ball 10, on go out in oil head 8 upper travelling valve is installed, upper travelling valve comprises upper travelling valve seat 11 and upper travelling valve ball 12, all valve balls in pump, valve seat all adopts stainless steel or Hardmetal materials, can reduce in crude oil sand grains to valve ball, the rate of wear of valve seat, has standing valve guide portion 13 in the ball chamber of standing valve cover 3, standing valve guide portion 13 offsets with fixed valve ball 4, has lower travelling valve guide portion 14 in the ball chamber of plunger closed cage 7, lower travelling valve guide portion 14 offsets with lower travelling valve ball 10, water passage surface in the ball chamber of standing valve cover 3 is provided with the first nonmetallic coating 15, water passage surface in the ball chamber of plunger closed cage 7 is provided with the second nonmetallic coating 16, the thickness of the first nonmetallic coating 15 is 2mm-3mm, the thickness of the second nonmetallic coating 16 is 2mm-3mm, the first nonmetallic coating 15 and the second nonmetallic coating 16 materials are macromolecule epoxy resin, macromolecule epoxy resin is sprayed on the water passage surface in ball chamber, certainly, the first nonmetallic coating 15 and the second nonmetallic coating 16 materials can also be polyurethane combined plastic etc., avoided mixing dirt and wax material etc. to stick to water passage surface and caused that area of passage reduces, improved oil recovery efficiency.
For fear of fixed valve ball 4 in oil recovery process and lower travelling valve ball 10 move up and down wearing and tearing the first nonmetallic coating 15 and the second nonmetallic coating 16, standing valve guide portion 13 is embedded with first and wear-resistingly inserts 17, lower travelling valve guide portion 14 is embedded with second and wear-resistingly inserts 18, the first wear-resisting 17 and second wear-resisting 18 wearing and tearing that reduced standing valve guide portion 13 and lower travelling valve guide portion 14 of inserting of inserting, the first wear-resisting 17 and second wear-resisting material of 18 of inserting of inserting is Tungsten carbite, nickel carbon compound or cobalt alloy etc.
due on go out the important spare part that oil head 8 is connecting with pumping rod post 19 and plunger piston assembly, it will bear very large tensile stress in the work engineering, but due to the restriction that is subjected to interior outside dimension on structural design, its bearing capacity is relatively low, go out oil head 8 in oil recovery process and also will bear the continuous wearing and tearing of upper travelling valve ball 12, therefore go out very easily fracture phenomenon of oil head 8 on, for fear of on go out oil head 8 and phenomenon of rupture occurs, on go out oil head 8 inwall be embedded with the 3rd and wear-resistingly insert 20, the 3rd wear-resisting 20 the material of inserting is Tungsten carbite, nickel carbon compound or cobalt alloy etc., greatly reduce the rate of wear that goes out oil head 8 on 12 pairs, upper travelling valve ball, reduced the field produces cost.
when in crude oil, sand content is larger, oil well pump is worked for a long time in containing sand drain, fixed valve ball 4 and fixed valve base 5 can constantly be worn and torn by sand grains, cause sealing surface to destroy, the sand grains that particle is larger also can drop on fixed valve base 5 sealing surfaces, cause poorly sealed, in order to guarantee fixed valve base 5 sealing surface good seals, be provided with nonmetal seal ring 21 between fixed valve base 5 and fixed valve ball 4, the outer ring of nonmetal seal ring 21 is sandwiched between fixed valve base 5 and standing valve cover 3, the inner ring of nonmetal seal ring 21 and fixed valve ball 4 offset, nonmetal seal ring 21 is selected corrosion-resistant, the fluorine rubber of good springiness is made, certain nonmetal seal ring 21 also can be selected high-strength nylon etc., when falling, at first drops on fixed valve ball 4 on nonmetal seal ring 21, with nonmetal seal ring 21 distendings, and forming pre-sealedly between the sphere of fixed valve ball 4 and nonmetal seal ring 21, fixed valve ball 4 is dropping under the fluid power effect on the sealing surface of fixed valve base 5 afterwards, when oil well pump is containing in sand drain long-term work, fixed valve base 5 sealing surface leakages, nonmetal seal ring 21 is squeezed in the angular space of fixed valve ball 4 and fixed valve base 5 upper ends formation under the fluid pressure effect, form the fluid power self-tightening sealing, compensate former fixed valve ball 4 and fixed valve base 5 and containing the defect of leaking under sand drain, sealing effect is good.
The wear-resisting oil well pump of the wax-proof anti-scaling that the utility model provides, because the water passage surface in the ball chamber of standing valve cover 3 is provided with the first nonmetallic coating 15, water passage surface in the ball chamber of plunger closed cage 7 is provided with the second nonmetallic coating 16, the smooth surface of the first nonmetallic coating 15 and the second nonmetallic coating 16, and be difficult for being corroded, make mixing dirt in crude oil and wax material etc. be difficult for sticking to its surface; And the first nonmetallic coating 15 and the second nonmetallic coating 16 poor thermal conductivity, when crude stream out-of-date, temperature can reduce hardly, therefore the salt that is dissolved in crude oil is difficult for separating out, wax in crude oil can not solidify yet, thereby prevent the generation of fouling wax deposition phenomenon, avoided the obstruction of standing valve cover 3 and plunger closed cage 7 runners of oil well pump, improved the oil recovery efficiency of oil well.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. the wear-resisting oil well pump of wax-proof anti-scaling, comprise pump barrel, described pump barrel is fixedly connected with standing valve cover, in described standing valve cover, standing valve is installed, be slidably fitted with plunger in described pump barrel, described plunger is fixedly connected with the plunger closed cage near an end of described standing valve, the other end is fixedly connected with out oil head, in described plunger closed cage, lower travelling valve is installed, go out in oil head to be equipped with upper travelling valve on described, it is characterized in that, has the standing valve guide portion in the ball chamber of described standing valve cover, the valve ball of described standing valve guide portion and described standing valve offsets, has the lower travelling valve guide portion in the ball chamber of described plunger closed cage, the valve ball of described lower travelling valve guide portion and described lower travelling valve offsets, water passage surface in the ball chamber of described standing valve cover is provided with the first nonmetallic coating, water passage surface in the ball chamber of described plunger closed cage is provided with the second nonmetallic coating.
2. the wear-resisting oil well pump of wax-proof anti-scaling according to claim 1, is characterized in that, described standing valve guide portion is embedded with the first wear-resisting inserting.Described lower travelling valve guide portion is embedded with the second wear-resisting inserting.
3. the wear-resisting oil well pump of wax-proof anti-scaling according to claim 2, is characterized in that, the inwall that goes out oil head on described is embedded with the 3rd wear-resisting inserting.
4. the wear-resisting oil well pump of wax-proof anti-scaling according to claim 3, is characterized in that, the thickness of described the first nonmetallic coating is 2mm-3mm, and the thickness of described the second nonmetallic coating is 2mm-3mm.
5. the wear-resisting oil well pump of the described wax-proof anti-scaling of arbitrary claim according to claim 1 to 4, it is characterized in that, described standing valve comprises the fixed valve base that is connected with described standing valve cover, be provided with nonmetal seal ring between the valve ball of described fixed valve base and described standing valve, the outer ring of described nonmetal seal ring is sandwiched between described fixed valve base and described standing valve cover, and the inner ring of described nonmetal seal ring and the valve ball of described standing valve offset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202548702U CN203285669U (en) | 2013-05-10 | 2013-05-10 | Paraffin control anti-scale abrasion resistant oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202548702U CN203285669U (en) | 2013-05-10 | 2013-05-10 | Paraffin control anti-scale abrasion resistant oil well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203285669U true CN203285669U (en) | 2013-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202548702U Expired - Lifetime CN203285669U (en) | 2013-05-10 | 2013-05-10 | Paraffin control anti-scale abrasion resistant oil well pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN203285669U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089995A (en) * | 2014-05-08 | 2015-11-25 | 王颖 | Organic six-prevention-effect rodless hydraulic driving double-action reciprocating pump |
| CN110397576A (en) * | 2019-06-13 | 2019-11-01 | 中国石油化工股份有限公司 | Oil well pump |
-
2013
- 2013-05-10 CN CN2013202548702U patent/CN203285669U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089995A (en) * | 2014-05-08 | 2015-11-25 | 王颖 | Organic six-prevention-effect rodless hydraulic driving double-action reciprocating pump |
| CN105089995B (en) * | 2014-05-08 | 2017-07-14 | 王颖 | Organic six is anti-without bar hydraulic drive double action for reciprocating pump |
| CN110397576A (en) * | 2019-06-13 | 2019-11-01 | 中国石油化工股份有限公司 | Oil well pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |
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| CX01 | Expiry of patent term |