CN203835688U - Rotational flow sand sticking prevention oil-well pump - Google Patents
Rotational flow sand sticking prevention oil-well pump Download PDFInfo
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- CN203835688U CN203835688U CN201420269340.XU CN201420269340U CN203835688U CN 203835688 U CN203835688 U CN 203835688U CN 201420269340 U CN201420269340 U CN 201420269340U CN 203835688 U CN203835688 U CN 203835688U
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- pump
- plunger
- sand
- eddy flow
- oil
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Abstract
The utility model discloses a rotational flow sand sticking prevention oil-well pump which comprises a pump outer barrel, a pump middle barrel and a plunger piston. The pump outer barrel is arranged on the outer side of a pump inner barrel, the plunger piston is located on the inner side of the pump middle barrel and matched with the pump middle barrel in a sliding mode, an upper floating valve cover is installed at the upper end of the plunger piston, and a hydrocyclone is installed at the upper end of the pump outer barrel. The hydrocyclone comprises a rotational flow sleeve and a spiral groove arranged on the inner wall of the rotational flow sleeve, the upper end of the plunger piston and the upper floating valve cover extend into the rotational flow sleeve, and the upper floating valve cover is provided with a radial hole communicated with the spiral groove. The oil-well pump discharges sands in crude oil out of a well opening together with the crude oil by improving the ascending speed of the sands in the crude oil and effectively prevents plunger piston abrasion and pump stuck failure caused by oil well sand production.
Description
Technical field
The utility model belongs to oil well pump technical field, is specifically related to a kind of eddy flow Anti-sand oil pump.
Background technique
In crude oil production process, due to the change of mining type, geological condition and production measure etc., cause come off sand or discrete sand of stratum to be carried to pit shaft by the fluid in stratum, thereby cause sand production.Its result can cause heavy wear to shaft bottom and oil reservoir, wellbore lift equipment-oil well pump, even produces sand card.Finally can increase well workover number of times, shorten pump detection period, even make oil well stop production.Therefore need a kind of technology, realize the sand controlling result of oil well pump inside in oil recovery process, thereby solve oil well pump sand card problem.
Existing Anti-sand oil pump has long-plunger short pump barrel sand-proof oil-well pump, three pipe sand-proof oil-well pumps etc.Wherein, long-plunger short pump barrel sand-proof oil-well pump, by increasing oil pump plunger piston length, makes plunger not enter pump barrel at up-down stroke, prevents that in crude oil, sand grains snaps in plunger-pump barrel gap.But the shortcoming of which is that significantly, along with the prolongation of service time, plunger and pump barrel gap increase gradually, and in crude oil, the sand grains rate of climb is less than the rate of climb of liquid, can make increasing sand grains enter plunger and pump barrel gap, thereby cause holddown.In addition, three pipe sand-proof oil-well pumps are by adopting outer tube, middle pipe, inner tube structure, make sand grains in crude oil sink to the annular space of outer tube-middle pipe, prevent that sand grains from entering plunger and interior ligament, thereby prevent holddown.But the sand grains rate of climb in crude oil is less, although some sinks to the annular space of outer tube-middle pipe, still some can enter plunger-Nei ligament, and along with oil well pump extends service time, plunger-Nei ligament increases, has more sand grains and enter this gap, thereby cause holddown.
Model utility content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, and a kind of eddy flow Anti-sand oil pump is provided.This oil well pump, by improving the speed uplink of sand grains in crude oil, is discharged well head by the sand grains in crude oil in company with crude oil together, effectively prevents the plunger wear and the holddown fault that because of sand production, cause.
For achieving the above object, the technical solution adopted in the utility model is: a kind of eddy flow Anti-sand oil pump, it is characterized in that: comprise cylinder and plunger in pump urceolus, pump, described pump urceolus is arranged on the outside of pump inner core, described plunger is arranged in the inner side of pump cylinder and is and is slidably matched with pump cylinder, the upper end of described plunger is provided with upper traveling valve cage, and the upper end of described pump urceolus is provided with cyclone separator; Described cyclone separator comprises eddy flow sleeve and the spiral chute that is arranged on eddy flow sleeve lining, and the upper end of described plunger and described upper traveling valve cage all stretch in eddy flow sleeve, offer the radial hole being connected with spiral chute on described upper traveling valve cage.
Above-mentioned a kind of eddy flow Anti-sand oil pump, is characterized in that: in described pump, on the madial wall of cylinder upper end, be provided with for when plunger is descending, avoid sand grains enter between plunger and pump cylinder on scrape sand lump.
Above-mentioned a kind of eddy flow Anti-sand oil pump, is characterized in that: the lower end of described plunger is provided with lower travelling valve cover, on described lower travelling valve cover, be provided with for when plunger is descending, wipe off pump cylinder madial wall sand grains under scrape sand lump.
Above-mentioned a kind of eddy flow Anti-sand oil pump, is characterized in that: the lower end of described lower travelling valve cover is provided with fixed tube, scrapes under described on the outer side wall that sand lump is arranged on fixed tube.
Above-mentioned a kind of eddy flow Anti-sand oil pump, it is characterized in that: between the upper end of described pump urceolus and plunger, form the first annular space, described the first annular space is connected with spiral chute, in described pump urceolus and pump, between cylinder, form the second annular space, described the second annular space is connected with the first annular space.
Above-mentioned a kind of eddy flow Anti-sand oil pump, is characterized in that: the upper end of described pump urceolus is connected with cyclone separator by lengthening box cupling, is configured for being communicated with the annular pass of spiral chute and the first annular space between described lengthening box cupling and plunger.
The utility model compared with prior art has the following advantages:
1, of the present utility model simple in structure, rationally novel in design.
2, the utility model is by the spiral chute of cyclone separator and the wall that sets within it, when sand containing crude oil flows into spiral chute from four radial holes of upper traveling valve cage, effect due to centrifugal force, the sand grains rate of climb that density is larger increases, enter oil pipe and discharge well head, therefore can effectively prevent that sand grains decline from causing the clamping stagnation of cylinder in plunger and pump.
3, the utility model by arranging, scrape sand lump and under scrape sand lump, and then when plunger is descending, under scrape cylinder inwall sand grains in sand lump scraped pump, above scrape sand lump and can strike off plunger outer wall sand grains, further prevent the matching gap that sand grains enters in plunger and pump tin.
4, the utility model is by the upper end of pump urceolus and the first annular space between plunger, and the second annular space between cylinder in pump urceolus and pump, when minute quantity sand grains sinks, can and then sink to the second annular space by the first annular space, further prevent that sand grains from entering gap in plunger and pump barrel and holddown.
5, of the present utility model to realize cost low, and using effect is good, is convenient to promote the use of.
In sum, the utility model is simple in structure, and rationally novel in design, functional reliability is high, long service life, and sands-proof check is effective, is convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model upper half part.
Fig. 2 is the structural representation of the utility model lower half portion.
Fig. 3 is the structural representation of the utility model cyclone separator.
Description of reference numerals:
1-bridge pipe; 2-bridge-type pipe nipple; 3-screen casing;
The 4-the first box cupling; 5-fixed valve base; 6-fixed valve ball;
7-standing valve cover; Cylinder in 8-pump; 9-under scrape sand lump;
10-fixed tube; 11-lower travelling valve seat; 12-lower travelling valve ball;
13-lower travelling valve cover; 14-plunger; 15-pump urceolus;
16-bridging plug; 17-above scrape sand lump; The 18-the first annular space;
19-lengthening box cupling; 20-upper travelling valve seat; 21-upper travelling valve ball;
22-upper traveling valve cage; 22-1-radial hole; 23-cyclone separator;
23-1-eddy flow sleeve; 23-2-spiral chute; The 24-the second box cupling.
25-annular pass; The 26-the second annular space.
Embodiment
A kind of eddy flow Anti-sand oil pump as depicted in figs. 1 and 2, comprise cylinder 8 and plunger 14 in pump urceolus 15, pump, described pump urceolus 15 is arranged on the outside of pump inner core 8, described plunger 14 is arranged in the inner side of pump cylinder 8 and is and is slidably matched with pump cylinder 8, and in described pump, the lower end of cylinder 8 is provided with standing valve cover 7.
As shown in Figure 2, the lower end of described pump urceolus 15 is connected with screen casing 3 and bridge pipe 1 by the first box cupling 4, described screen casing 3 is positioned at the outside of bridge pipe 1, the inner side of described bridge pipe 1 is provided with bridge-type pipe nipple 2, the upper end of described bridge-type pipe nipple 2 is connected with the lower end of cylinder 8 in pump by standing valve cover 7, the upper-end surface of described bridge-type pipe nipple 2 is provided with fixed valve base 5, on described fixed valve base 5, be provided with fixed valve ball 6, the lower end of described plunger 14 is provided with lower travelling valve cover 13, the lower end of described lower travelling valve cover 13 is provided with fixed tube 10, the upper end of described fixed tube 10 and the inner side that is positioned at lower travelling valve cover 13 are provided with lower travelling valve seat 11, on described lower travelling valve seat 11, be provided with lower travelling valve ball 12.
As shown in Figure 1, in described pump, the upper end of cylinder 8 and the upper end of pump urceolus 15 are connected by bridging plug 16, the upper end of described plunger 14 is provided with upper traveling valve cage 22, the upper end of described plunger 14 and the inner side that is positioned at upper traveling valve cage 22 are provided with upper travelling valve seat 20, on described upper travelling valve seat 20, upper travelling valve ball 21 are installed.
As shown in Figure 1, the upper end of described pump urceolus 15 is provided with cyclone separator 23; Described cyclone separator 23 is connected with oil pipe by the second box cupling 24, and described upper traveling valve cage 22 is connected with the sucker rod of pumping unit.
In conjunction with Fig. 1 and Fig. 3, described cyclone separator 23 comprises eddy flow sleeve 23-1 and is arranged on the spiral chute 23-2 of eddy flow sleeve 23-1 inwall, the upper end of described plunger 14 and described upper traveling valve cage 22 all stretch in eddy flow sleeve 23-1, offer the radial hole 22-1 being connected with spiral chute 23-2 on described upper traveling valve cage 22.Preferred way is that the quantity of described radial hole 22-1 is four.
As shown in Figure 1, in described pump, on the madial wall of cylinder 8 upper ends, be provided with for when plunger 14 is descending, avoid sand grains enter between plunger 14 and pump cylinder 8 on scrape sand lump 17.
As shown in Figure 2, on described lower travelling valve cover 13, be provided with for when plunger 14 is descending, wipe off pump cylinder 8 madial wall sand grains under scrape sand lump 9.Concrete, scrape under described on the outer side wall that sand lump 9 is arranged on fixed tube 10.
As shown in Figure 1, between the upper end of described pump urceolus 15 and plunger 14, form the first annular space 18, described the first annular space 18 is connected with spiral chute 23-2, in described pump urceolus 15 and pump, between cylinder 8, form the second annular space 26, described the second annular space 26 is connected with the first annular space 18.The upper end of described pump urceolus 15 is connected with cyclone separator 23 by lengthening box cupling 19, is configured for being communicated with the annular pass 25 of spiral chute 23-2 and the first annular space 18 between described lengthening box cupling 19 and plunger 14.
In the present embodiment, this eddy flow Anti-sand oil pump in use, in oil well, crude oil enters the inner chamber of bridge-type pipe nipple 2 by the aperture on screen casing 3, when ground pumping unit is during in upstroke, its suspension point drives sucker rod up, sucker rod drives upper traveling valve cage 22 up, upper traveling valve cage 22 drives plunger 14 up, fixed valve ball 6 upper space volumes increase, crude oil pressure drop, when in fixed valve ball 6 upper spaces, former oil pressure is less than fixed valve ball 6 bottom former oil pressure, fixed valve ball 6 moves up and opens, and then crude oil enters fixed valve ball 6 upper spaces from the inner chamber of bridge-type pipe nipple 2, because lower travelling valve ball 12 is up with plunger 14 with upper travelling valve ball 21, the upper pressure of lower travelling valve ball 12 and upper travelling valve ball 21 is all greater than its underpart pressure, therefore lower travelling valve ball 12 and upper travelling valve ball 21 are all closed.
When plunger 14 is descending, fixed valve ball 6 upper space volumes reduce, its inner former oil pressure increases and is greater than fixed valve ball 6 bottom pressure, therefore fixed valve ball 6 is closed, the lower space volume of lower travelling valve ball 12 and upper travelling valve ball 21 reduces, pressure increases, when its pressure is greater than upper pressure, lower travelling valve ball 12 and upper travelling valve ball 21 are all opened, crude oil and then up from fixed valve ball 6 upper spaces, and be drained in the spiral chute 23-2 of cyclone separator 23 by the radial hole 22-1 of upper traveling valve cage 22.Enter the crude oil in spiral chute 23-2, under the effect of centrifugal force, the sand grains that in crude oil, density is larger is under the guiding of spiral chute 23-2, its rate of climb increases, therefore with crude oil rising, enter oil pipe and discharge well head, and then by improving the speed uplink of sand grains in crude oil, the sand grains in crude oil is discharged to well head together in company with crude oil, effectively prevent plunger 14 wearing and tearing and the holddown faults that cause because of sand production.
In the present embodiment, this oil well pump in use, when plunger 14 is descending, under scrape in sand lump 9 scraped pumps cylinder 8 inwall sand grains, above scrape sand lump 17 and can strike off plunger 14 outer wall sand grains, prevent that sand grains from entering the gap of cylinder 8 in plunger 14 and pump, plays sands-proof check effect.Under extreme case, a small amount of particle is tiny, eddy flow accelerates unconspicuous sand grains while sinking, and can sink to the second annular space 26 by the first annular space 18, prevents from entering the gap of cylinder 8 in plunger 14 and pump and holddown.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification, change and equivalent structure transformation of above embodiment being done according to the utility model technical spirit, all still belongs in the protection domain of technical solutions of the utility model.
Claims (6)
1. an eddy flow Anti-sand oil pump, it is characterized in that: comprise cylinder (8) and plunger (14) in pump urceolus (15), pump, described pump urceolus (15) is arranged on the outside of pump inner core (8), described plunger (14) is arranged in the inner side of pump cylinder (8) and is and is slidably matched with pump cylinder (8), the upper end of described plunger (14) is provided with upper traveling valve cage (22), and the upper end of described pump urceolus (15) is provided with cyclone separator (23); Described cyclone separator (23) comprises eddy flow sleeve (23-1) and is arranged on the spiral chute (23-2) of eddy flow sleeve (23-1) inwall, the upper end of described plunger (14) and described upper traveling valve cage (22) all stretch in eddy flow sleeve (23-1), offer the radial hole (22-1) being connected with spiral chute (23-2) on described upper traveling valve cage (22).
2. a kind of eddy flow Anti-sand oil pump according to claim 1, is characterized in that: in described pump, on the madial wall of cylinder (8) upper end, be provided with for when plunger (14) is descending, avoid sand grains enter between plunger (14) and pump tin (8) on scrape sand lump (17).
3. a kind of eddy flow Anti-sand oil pump according to claim 1, it is characterized in that: the lower end of described plunger (14) is provided with lower travelling valve cover (13), on described lower travelling valve cover (13), be provided with for when plunger (14) is descending, wipe off pump cylinder (8) madial wall sand grains under scrape sand lump (9).
4. a kind of eddy flow Anti-sand oil pump according to claim 3, is characterized in that: the lower end of described lower travelling valve cover (13) is provided with fixed tube (10), scrapes sand lump (9) under described to be arranged on the outer side wall of fixed tube (10).
5. a kind of eddy flow Anti-sand oil pump according to claim 1, it is characterized in that: between the upper end of described pump urceolus (15) and plunger (14), form the first annular space (18), described the first annular space (18) is connected with spiral chute (23-2), in described pump urceolus (15) and pump, between cylinder (8), form the second annular space (26), described the second annular space (26) is connected with the first annular space (18).
6. a kind of eddy flow Anti-sand oil pump according to claim 5, it is characterized in that: the upper end of described pump urceolus (15) is connected with cyclone separator (23) by lengthening box cupling (19), between described lengthening box cupling (19) and plunger (14), be configured for being communicated with the annular pass (25) of spiral chute (23-2) and the first annular space (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420269340.XU CN203835688U (en) | 2014-05-25 | 2014-05-25 | Rotational flow sand sticking prevention oil-well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420269340.XU CN203835688U (en) | 2014-05-25 | 2014-05-25 | Rotational flow sand sticking prevention oil-well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835688U true CN203835688U (en) | 2014-09-17 |
Family
ID=51513536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420269340.XU Expired - Fee Related CN203835688U (en) | 2014-05-25 | 2014-05-25 | Rotational flow sand sticking prevention oil-well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203835688U (en) |
-
2014
- 2014-05-25 CN CN201420269340.XU patent/CN203835688U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20170525 |