CN202441341U - Oil well shaft lifting device - Google Patents
Oil well shaft lifting device Download PDFInfo
- Publication number
- CN202441341U CN202441341U CN2012200828850U CN201220082885U CN202441341U CN 202441341 U CN202441341 U CN 202441341U CN 2012200828850 U CN2012200828850 U CN 2012200828850U CN 201220082885 U CN201220082885 U CN 201220082885U CN 202441341 U CN202441341 U CN 202441341U
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- CN
- China
- Prior art keywords
- pump
- oil
- oil pipe
- lifting device
- well wellbore
- 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
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model provides an oil well shaft lifting device, which is used for lifting crude oil in an oil well shaft. The oil well shaft lifting device comprises a first pump and a second pump, wherein the lower part of the first pump is provided with a first pump intake opening for pumping the crude oil; the upper part of the first pump is provided with a first pump discharging opening for discharging the crude oil; the lower part of the second pump is provided with a second pump intake opening; the upper part of the second pump is provided with a second pump discharging opening; the second pump intake opening is connected with the discharging opening of the first pump; and the discharge capacity of the first pump is larger than that of the second pump. By using the oil well shaft lifting device provided by the utility model, the polished rod load is reduced, the pressure at the pump intake opening is increased and the pump efficiency is increased when the fluid production rate is satisfied.
Description
Technical field
The utility model relates to well wellbore lifting field, is used for the higher deep-well lifting of lifting rate, in particular to a kind of well wellbore lifting device.
Background technology
During exploitation deep layer oil reservoir, pump directly reaches down the restriction that the pump degree of depth receives oil pumper rated load and strength of oil pump rod, and the oil well production energy consumption is big, the production fluid amount is low, pump efficiency is low.The technology that is used for the deep-well lifting at present mainly contains: hydraulic piston pump, electric submersible pump, gaslift, sucker rod pump.Individual well investment, production and the maintenance cost of hydraulic piston pump are higher than sucker rod pump; It is less that the gaslift technology is used by factor affecting such as source of the gas, safety; Electric submersible pump is not strong in high temperature, deep-well applicability; The lifting of sucker rod pump deep-well to be adopted big machine, strong bar method or adopts little pump to take out technology deeply, has solved the problem of oil pumper rated load, but has had problems such as the oil well liquid energy expenditure per ton is high, pump efficiency is low.In addition, adopt little pump, also satisfied not the needs of high yield liquid measure.
The utility model content
The utility model proposes a kind of well wellbore lifting device, to solve the problem that pump efficiency is low, the production fluid amount is low that prior art runs in the oil well lifting.
For this reason; The utility model proposes a kind of well wellbore lifting device; The crude oil that is used for the lifting well wellbore; Said well wellbore lifting device comprises: first pump, the bottom of said first pump have first Pump Suction Nozzle of suction crude oil, and the top of said first pump has first pump discharge of discharging crude oil; Second pump, the bottom of said second pump has second Pump Suction Nozzle, and the top of said second pump has second pump discharge, and said second Pump Suction Nozzle is connected with the outlet opening of said first pump; Said first pump delivery is greater than said second pump delivery.
Further; Said well wellbore lifting device also comprises: first oil pipe; Said first pump and said second pump are arranged in first oil pipe; Said well wellbore lifting device also comprises: be connected second oil pipe of said second pump discharge top, the internal diameter of said first oil pipe is greater than the external diameter of said second oil pipe.
Further, said first oil pipe is connected through box cupling with said second oil pipe, and said box cupling is provided with spout hole; Be provided with sleeve pipe in the said well wellbore, said first oil pipe is communicated with the oil sets annular space between said sleeve pipe and said first oil pipe with oil pipe annular space between said second oil pipe through said spout hole.
Further, the specification of said first oil pipe is 4.5 inches oil pipes.
Further, the specification of said second oil pipe is 2.5 inches oil pipes.
Further, the model of said first pump is that pump directly is 95mm or 83mm oil well pump.Said second pump is a fluid power feedback pump.
The utility model is used first pump as big pump suction crude oil, has solved little pump feed flow problem effectively, has improved pump efficiency; As little pump lifting crude oil, use little pump lifting with second pump, reduce the lifting load, solved oil pumper rated load and strength of oil pump rod problem effectively, can pump setting depth effectively be strengthened.
Description of drawings
Fig. 1 is the structural representation according to the well wellbore lifting device of the utility model embodiment.
The drawing reference numeral explanation:
10 first pumps, 20 second pumps, 30 first oil pipes, 40 second oil pipes, 50 sleeve pipes, 60 box cuplings
65 spout holes, 70 oil pipes, 80 hollow stems, 90 sucker rods, 43 oil pipe annular spaces
53 oil sets annular spaces, 95 sucker rods connect and the disconnection device
The specific embodiment
Understand for technical characterictic, purpose and effect to the utility model have more clearly, contrast the specific embodiment of description of drawings the utility model at present.
As shown in Figure 1; Well wellbore lifting device according to the utility model embodiment; The crude oil that is used for the lifting well wellbore is provided with sleeve pipe 50 in the pit shaft, said well wellbore lifting device comprises: first pump 10; The bottom of said first pump 10 has first Pump Suction Nozzle of suction crude oil, and the top of said first pump has first pump discharge of discharging crude oil; Second pump 20, the bottom of said second pump has second Pump Suction Nozzle, and the top of said second pump has second pump discharge, and said second Pump Suction Nozzle is connected with the outlet opening of said first pump; The discharge capacity of said first pump 10 is greater than the discharge capacity of said second pump 20.
Further; As shown in Figure 1; Said well wellbore lifting device also comprises: first oil pipe 30; Said first pump 10 is arranged in first oil pipe 30 with said second pump 20, and said well wellbore lifting device also comprises: be connected second oil pipe 40 of said second pump discharge top, the internal diameter of said first oil pipe 30 is greater than the external diameter of said second oil pipe 40.This set can make second pump 20 improve as the pump pressure that advances of little pump, guarantees the degree of filling of little pump, by little pump liquid is lifted to ground, thereby reduces the lifting load.
Further, said first oil pipe 30 is connected through box cupling 60 with said second oil pipe 40, and said box cupling 60 can be conical ring, and box cupling 60 is provided with spout hole 65; Said first oil pipe 30 is communicated with the oil sets annular space 53 between said sleeve pipe 50 and said first oil pipe 30 with oil pipe annular space 43 between said second oil pipe 40 through said spout hole; So that second pump 20 is lifted to ground with liquid; And advance pump pressure and improve, thereby reduce the lifting load.
Further, the specification of said first oil pipe is 4.5 inches oil pipes, to be fit to hold first pump 10 and said second pump 20.The specification of said second oil pipe is 2.5 inches oil pipes, to form suitable annular space.
Further, the model of said first pump is that pump directly is the oil well pump of 95mm or 83mm.The model of said second pump is a fluid power feedback pump, for example is 70/38 type fluid power feedback pump.
The course of work of the utility model once is described below:
(be large discharge pump with first pump 10 earlier; Be called for short big pump) the pump housing and 4 cun half first oil pipe 30 connect degree of depth G.I.H on request; Then with the plunger and second pump 20 of first pump 10 (being large discharge pump); Second oil pipe 40 that is fluid power feedback pump (plunger is in pump) and 2 cun half connects G.I.H successively; When reaching desired depth is after the plunger of large discharge pump is run into the pump housing of large discharge pump, 2 cun half second oil pipe 40 to be connected with special box cupling with 4 cun half oil pipe, has spout hole that the annular space between two oil pipes is communicated with oil sets annular space on the special box cupling.G.I.H after 2 cun half oil pipe and 4 cun half first oil pipe 30 connect, and then add 2 cun half oil pipes and connect second oil pipe 40, this root oil pipe other end is connected with 4 cun oil pipes 70, use 4 cun oil pipes 70 always down to desired depth then always.After oil pipe finishes for 70 times; Sucker rod through reserving on hollow stem 80 lower sucker rods 90 and second pump 20 docks; On the sucker rod that the down-hole is reserved, have sucker rod to connect and disconnection device 95 so that disconnect when playing sucker rod in the future, the sucker rod end that is lowered to has fishing socket to utilize it that sucker rod in the well is caught to realize connecting.
The utility model is used second pump (fluid power feedback pump; Also claim little pump) directly link to each other with first pump (large discharge pump) and move simultaneously, the liquid of big pump suction gets into the annular space of 4 cun half oil pipe and 2 cun half oil pipe, forms high liquid level (HLL) at this annular space; The pump pressure that advances of little pump is improved; Guarantee the degree of filling of little pump, liquid is lifted to ground, thereby reduce the lifting load by little pump.When the utility model satisfies the production fluid amount, reduce polished rod load, improve PIP, improve pump efficiency.
The above is merely the schematic specific embodiment of the utility model, is not in order to limit the scope of the utility model.For each ingredient of the utility model can make up under the condition of not conflicting each other; Any those skilled in the art; Equivalent variations of under the prerequisite of design that does not break away from the utility model and principle, having done and modification all should belong to the scope that the utility model is protected.
Claims (6)
1. well wellbore lifting device is used for the crude oil of lifting well wellbore, it is characterized in that said well wellbore lifting device comprises:
First pump, the bottom of said first pump have first Pump Suction Nozzle of suction crude oil, and the top of said first pump has first pump discharge of discharging crude oil;
Second pump, the bottom of said second pump has second Pump Suction Nozzle, and the top of said second pump has second pump discharge, and said second Pump Suction Nozzle is connected with the outlet opening of said first pump;
Said first pump delivery is greater than said second pump delivery.
2. well wellbore lifting device as claimed in claim 1; It is characterized in that; Said well wellbore lifting device also comprises: first oil pipe; Said first pump and said second pump are arranged in first oil pipe, and said well wellbore lifting device also comprises: be connected second oil pipe of said second pump discharge top, the internal diameter of said first oil pipe is greater than the external diameter of said second oil pipe.
3. well wellbore lifting device as claimed in claim 2 is characterized in that, said first oil pipe is connected through box cupling with said second oil pipe, and said box cupling is provided with spout hole; Be provided with sleeve pipe in the said well wellbore, said first oil pipe is communicated with the oil sets annular space between said sleeve pipe and said first oil pipe with oil pipe annular space between said second oil pipe through said spout hole.
4. well wellbore lifting device as claimed in claim 2 is characterized in that, the specification of said first oil pipe is 4.5 inches oil pipes.
5. well wellbore lifting device as claimed in claim 4 is characterized in that, the specification of said second oil pipe is 2.5 inches oil pipes.
6. well wellbore lifting device as claimed in claim 1 is characterized in that, the model of said first pump is that pump directly is the oil well pump of 95mm or 83mm, and said second pump is a fluid power feedback pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200828850U CN202441341U (en) | 2012-03-07 | 2012-03-07 | Oil well shaft lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200828850U CN202441341U (en) | 2012-03-07 | 2012-03-07 | Oil well shaft lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202441341U true CN202441341U (en) | 2012-09-19 |
Family
ID=46822794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200828850U Expired - Fee Related CN202441341U (en) | 2012-03-07 | 2012-03-07 | Oil well shaft lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202441341U (en) |
-
2012
- 2012-03-07 CN CN2012200828850U patent/CN202441341U/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: 20120919 Termination date: 20210307 |