CN201273263Y - Hollow screw pump for realizing under-pump liquid mixing - Google Patents
Hollow screw pump for realizing under-pump liquid mixing Download PDFInfo
- Publication number
- CN201273263Y CN201273263Y CNU2008201102820U CN200820110282U CN201273263Y CN 201273263 Y CN201273263 Y CN 201273263Y CN U2008201102820 U CNU2008201102820 U CN U2008201102820U CN 200820110282 U CN200820110282 U CN 200820110282U CN 201273263 Y CN201273263 Y CN 201273263Y
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- CN
- China
- Prior art keywords
- pump
- screw pump
- liquid
- valve body
- hollow
- 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 - Lifetime
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- 239000007788 liquid Substances 0.000 title claims abstract description 51
- 238000002156 mixing Methods 0.000 title claims abstract description 33
- 241000883990 Flabellum Species 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 12
- 239000000203 mixture Substances 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The hollow screw pump for realizing under-pump liquid blending is applied to the viscosity reduction exploitation of the thick oil blending liquid in the oil field. Is characterized in that: the screw pump consists of a stator and a hollow rotor. The hollow rotor has a central bore. The hollow sucker rod is communicated with the central hole of the hollow rotor. The lower end of the hollow rotor of the screw pump is connected with a hollow connecting rod. A check valve is fixed at the lower end of the hollow connecting rod. The lower end of the screw pump stator is fixed with a mixing pipe. The effect is as follows: the doped liquid can be conveyed to the lower part of the screw pump through the screw pump, and the doped liquid is fully mixed with well fluid. The mixed liquid is mixed with well liquid to change the fluidity, so that the mixed liquid is easier to be lifted to the ground by the screw pump, and the oil extraction efficiency is improved.
Description
Technical field
The utility model relates to the oil field technical field of petroleum extraction, and particularly viscous crude is mixed the exploitation of liquid viscosity reduction, is a kind of cored screw pump that can realize mixing under the oil extraction pump liquid.
Background technique
At present, the oil-field thick-oil exploitation is adopted usually and is injected hot water, steam, injects chemical agent, or adopts technology such as electric heating or electromagnetism heating, and viscous crude is given rise to ground from wellbore bottom.As Chinese patent notice of authorization CN2663653Y, a kind of in providing " heating system device under the submersible electric pump well pump ", the main points of the technological scheme of this device are that to adopt the power electricity with 380V be the device power supply, become single-phase electricity by rectifier transformer, be entered into the down-hole by ground power supply and control system by the steel pipe jacketed cable, the steel pipe jacketed cable passes from pump and shell clearance at downhole oil cover annular space, cable is connected under the pump on the heater, realization is to the heating of viscous crude, simultaneously the steel pipe jacketed cable also plays the effect of heating viscosity reduction according to the Skin effect principle to the crude oil of lifting process on oil-immersed pump top, make it in the lifting process, have flowability, solved employing submersible electric pump (electric submersible pump, screw pumps etc.) during heavy crude producing, the heating viscous crude makes it go into the pump problem smoothly under pump.Chinese patent notice of authorization CN200978664Y and for example, provide a kind of " water mixing viscosity reduction tubing string on the pump " mainly to install from top to bottom by the short string that connects oil pipe, the water mixing passage that upper design has oil jacket to be communicated with, the bottom design has pressure guide hole, design and installation stuffing box gland that can slide up and down in it is connected the short string connection of suction pump and constitutes with hydraulic communication valve, packet and the bottom of tubing string internal communication.During production, the hot water that mixes enters the well liquid of extracting out with suction pump in the oil pipe on its top to be mixed by connecting valve, has improved oil pipe interior well liquid moisture content and temperature, has reduced the interior well fluid viscosity of pump top oil pipe.
Yet, in the ground driving screw pump lifting viscous crude process, be to solve the problem of the mobile difference of pit shaft viscous crude, particularly adopt and mix liquid by pump and be transported to the bottom of pump, more can effectively improve and mix liquid and the abundant blending effect of pit shaft liquid.Realize mixing under the pump screw pump that liquid adopts and must realize to mix liquid and cross pump and be transported under the pump, but existing screw pump does not possess this function.
The model utility content
The purpose of this utility model is: a kind of cored screw pump of realizing mixing under the pump liquid is provided, can realizes that mixing liquid crosses pump, realize mixing liquid under the pump.Adopt hollow rod, screw pump sleeve rotor, hollow connecting rod, blending pipe and one-way valve to make to mix liquid to be transported under the pump, and will mix liquid, improve the flowability of viscous crude, the raising oil recovery efficiency with pit shaft liquid fully stirs blending.
The technical solution adopted in the utility model is: the cored screw pump of realizing mixing under the pump liquid, mainly form by hollow rod, screw pump, hollow connecting rod, blending pipe and one-way valve, hollow rod lower end connecting screw rod pump is characterized in that: screw pump is made up of stator and sleeve rotor.Sleeve rotor has center hole.Hollow rod is communicated with the sleeve rotor center hole.Screw pump sleeve rotor lower end connects hollow connecting rod.The hollow connecting rod lower end is fixed with one-way valve.Lower end at screw pump stator is fixed with blending pipe.
Described one-way valve is made up of spool, valve body and spring, and valve body is cylindric, and valve body is connected the lower end of hollow connecting rod.A spool is arranged in the valve body.Spool is stepped cylindrical body, and the spool top is a conical surface.Spiral compression spring is arranged at the bottom of spool.Mix the liquid exhaust port on valve body wall, equalizing orifice is arranged at the valve body bottom.
To mix liquid and well liquid mixes in order making, be fixed with flabellum on the outer wall of valve body, the quantity of flabellum is the 2-6 sheet, and shape is fixed on the outer wall of valve body in the shape of a spiral.Flabellum rotates with valve body, hollow connecting rod, sleeve rotor and hollow rod, and flabellum stirs to make and mixes liquid and well liquid mixes.
On the outer wall of valve body and between the blending pipe supporting base is being arranged.
Working principle: ground driving screw pump rotation in the oil recovery production process, hollow rod will mix liquid and be transported to screw pump from ground simultaneously, promptly mix center hole and the one-way valve of liquid by hollow rod, sleeve rotor, hollow connecting rod, enter blending pipe.At this moment well liquid enters blending pipe by the import of well liquid.
The beneficial effects of the utility model: the utility model realizes mixing under the pump cored screw pump of liquid, can make to mix liquid and be transported to the screw pump bottom by screw pump, and will mix liquid and the abundant blending of well liquid.Mix liquid and mix change flowability in back with well liquid, mixed solution is easier to be given rise to ground by screw pump, has improved oil recovery efficiency.
Description of drawings
Fig. 1 is the cored screw pump structure generalized section of mixing liquid under the utility model realization pump.
Among the figure, 1. hollow rod, 2. stator, 3. sleeve rotor, 4. hollow connecting rod, 5. blending pipe, 6. spool, 7. valve body, 8. supporting base, 9. spring, 10. equalizing orifice, 11. exhaust ports, 12. well liquid imports, 13. flabellums.
Embodiment
Embodiment 1: the utility model is realized that the cored screw pump of mixing liquid under the pump is described in further detail.
Consult Fig. 1.The utility model realizes mixing under the pump cored screw pump of liquid, the hollow rod 1 lower end screw pump that is threaded, and screw pump is made up of stator 2 and sleeve rotor 3.Sleeve rotor 3 has center hole.Hollow rod 1 is communicated with sleeve rotor 3 center holes.Screw pump sleeve rotor 3 lower ends connect hollow connecting rod 4.Hollow connecting rod 4 lower end screw threads are connected with an one-way valve.Described one-way valve is made up of spool 6, valve body 7 and spring 9, and valve body 7 is cylindric, and valve body 7 is connected the lower end of hollow connecting rod 4.A spool 7 is arranged in the valve body 7.Spool 6 is stepped cylindrical body, and spool 6 tops are conical surface.Spiral compression spring 9 is arranged at the bottom of spool 6.On valve body 7 walls, mix liquid exhaust port 11, mix liquid exhaust port 11 and adopt screen casing.An equalizing orifice 10 is arranged at valve body 7 bottoms.Be fixed with blending pipe 5 in the lower end of screw pump stator 2.Supporting base 8 is being arranged on the outer wall of valve body 7 and between the blending pipe 5.Supporting base 8 is fixed on the outer wall of valve body 7, plays centralizing function.
Be fixed with flabellum 13 on the outer wall of valve body 7, the quantity of flabellum 13 is 3, and shape is fixed on the outer wall of valve body 7 in the shape of a spiral, plays stirring action.
Claims (4)
1, a kind of cored screw pump of realizing mixing under the pump liquid, mainly by hollow rod (1), screw pump, hollow connecting rod (4), blending pipe (5) and one-way valve are formed, hollow rod (1) lower end connecting screw rod pump, it is characterized in that: screw pump is made up of stator (2) and sleeve rotor (3), sleeve rotor (3) has center hole, hollow rod (1) is communicated with sleeve rotor (3) center hole, screw pump sleeve rotor (3) lower end connects hollow connecting rod (4), hollow connecting rod (4) lower end is fixed with one-way valve, is fixed with blending pipe (5) in the lower end of screw pump stator (2).
2, mix the cored screw pump of liquid under the realization pump according to claim 1, it is characterized in that: described one-way valve is made up of spool (6), valve body (7) and spring (9), valve body (7) is cylindric, valve body (7) is connected the lower end of hollow connecting rod (4), a spool (7) is arranged in the valve body (7), spool (6) is stepped cylindrical body, spool (6) top is a conical surface, spiral compression spring (9) is arranged at the bottom of spool (6), mix liquid exhaust port (11) on valve body (7) wall, equalizing orifice (10) is arranged at valve body (7) bottom.
3, mix the cored screw pump of liquid under the realization pump according to claim 1 and 2, it is characterized in that: be fixed with flabellum (13) on the outer wall of valve body (7), the quantity of flabellum (13) is the 2-6 sheet, and shape is fixed on the outer wall of valve body (7) in the shape of a spiral.
4, mix the cored screw pump of liquid under the realization pump according to claim 1 and 2, it is characterized in that: supporting base (8) is being arranged on the outer wall of valve body (7) and between the blending pipe (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201102820U CN201273263Y (en) | 2008-08-29 | 2008-08-29 | Hollow screw pump for realizing under-pump liquid mixing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201102820U CN201273263Y (en) | 2008-08-29 | 2008-08-29 | Hollow screw pump for realizing under-pump liquid mixing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201273263Y true CN201273263Y (en) | 2009-07-15 |
Family
ID=40883610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201102820U Expired - Lifetime CN201273263Y (en) | 2008-08-29 | 2008-08-29 | Hollow screw pump for realizing under-pump liquid mixing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201273263Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100586A (en) * | 2017-04-13 | 2017-08-29 | 潍坊盛德石油机械制造有限公司 | The underlying flow-stop valve of screw pump |
-
2008
- 2008-08-29 CN CNU2008201102820U patent/CN201273263Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100586A (en) * | 2017-04-13 | 2017-08-29 | 潍坊盛德石油机械制造有限公司 | The underlying flow-stop valve of screw 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: 20090715 |
|
| CX01 | Expiry of patent term |