CN202832455U - Fireflood well gas-proof and oil recovery integrated tubular column - Google Patents
Fireflood well gas-proof and oil recovery integrated tubular column Download PDFInfo
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- CN202832455U CN202832455U CN 201220452679 CN201220452679U CN202832455U CN 202832455 U CN202832455 U CN 202832455U CN 201220452679 CN201220452679 CN 201220452679 CN 201220452679 U CN201220452679 U CN 201220452679U CN 202832455 U CN202832455 U CN 202832455U
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- gas
- pump
- plunger
- pump barrel
- oil recovery
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Abstract
The utility model relates to a fireflood well gas-proof and oil recovery integrated tubular column. The fireflood well gas-proof and oil recovery integrated tubular column comprises from top to bottom an air discharge type gas proof pump, a gas anchor and a pipe plug, and the air discharge type gas proof pump, the gas anchor and the pipe plug are connected in sequence. The air discharge type gas proof pump comprises a pump cylinder, and a through hole is formed in a cylinder wall of the middle portion of the pump cylinder. A fixing valve is fixed outside the bottom of the pump cylinder. A pump cylinder upper connector is connected outside the top of the pump cylinder and a valve cover is horizontally arranged inside the pump cylinder upper connector. An axial centre hole is formed in the valve cover and a plurality of through holes are arranged on the side of the centre hole. A plunger is arranged in the pump cylinder in a sealing and sliding mode, the plunger is in a cylinder shape, a connecting rod penetrates through the centre hole of the valve cover and the plunger along the axial direction, a traveling valve is arranged at the bottom of the connecting rod, and the traveling valve is arranged at the bottom of the cylinder of the plunger in a sealing and clamping mode. An upper blocking cover is arranged on the connecting rod and located on the upper side of the plunger, the upper blocking cover is arranged at the top of the cylinder of the plunger in a sealing and covering mode. The axial distance between the upper blocking cover and the traveling valve is bigger than the axial length of the plunger. The fireflood well gas-proof and oil recovery integrated tubular column adopts the combination of the gas anchor and the gas proof pump, achieves two gas-oil separation of the fireflood high-gas well up the pump and down the pump, improves gas-oil separating efficiency of the fireflood production well output liquid, achieves normal production of the oil well and improves oil recovery efficiency.
Description
Technical field
The utility model is about a kind of oil extraction process tubular column in the petroleum production engineering field, relates in particular to a kind of fireflood well gas-tight oil recovery integral tubular column that is applied to the fire flood oil well.
Background technology
Situ combustion technology also is in fire flood, gas injection well adopt electricity, chemistry etc. method make oil reservoir reach the crude oil burning-point, and inject air or oxygen to oil reservoir, make the crude oil sustained combustion in the oil reservoir, improve the temperature and pressure on stratum, realize the normal production of producing well.One of main feature of fire flood well is exactly that producing well output is high, and progressively passes forward with ignition line, and gas production also day by day rises.Oil well pump is vulnerable to gases affect in the course of the work, and pump efficiency is descended, when serious even can cause oil well pump the gas lock phenomenon to occur.At present, in the application that gas-tight recovers the oil, use airlock-resistant oil pump and the gas anchor of various structures, but the gas-liquid separation effect of these structures is limited, can't improve oil recovery efficiency.
Thus, the inventor relies on experience and the practice of being engaged in for many years relevant industries, proposes a kind of fireflood well gas-tight oil recovery integral tubular column, to overcome the defective of prior art.
The utility model content
The purpose of this utility model is to provide a kind of fireflood well gas-tight oil recovery integral tubular column, can realize fireflood producing well gas twice Oil-gas Separation in pumping pipe string under the pump, on the pump, improve gas-liquid separation effect, realize the normal production of fireflood pumpingh well, to improve oil recovery efficiency.
The purpose of this utility model is achieved in that a kind of fireflood well gas-tight oil recovery integral tubular column, and described gas-tight oil recovery integral tubular column comprises exhaust gas prevention pump, gas anchor and the plug that is linked in sequence from top to bottom;
This exhaust gas prevention pump includes pump barrel, and the barrel at pump barrel middle part is provided with open-work; The pump barrel bottom is circumscribed with standing valve; The pump barrel top is circumscribed with the pump barrel top connection, and pump barrel top connection inner transverse is provided with valve bonnet; Valve bonnet is provided with axial center hole, and the centre bore side is provided with a plurality of perforation; Be provided with the plunger that sealed sliding is established in the described pump barrel, described plunger is cylindric, and a pitman shaft is to the centre bore that passes described valve bonnet and plunger, and the connecting rod bottom is provided with travelling valve, and described travelling valve energy sealed clamping cleat is located at the cylinder bottom of plunger; On connecting rod and be positioned at the plunger upside and be provided with upper barrier cover, described upper barrier cover can seal cover be located at the cylinder top of plunger; The axial distance of described upper barrier cover and travelling valve is greater than the axial length of plunger;
Described gas anchor is made of the inner and outer tubes that gas anchor top connection and spaced radial are set in gas anchor top connection bottom; Be provided with a plurality of ducts on the tube wall of described outer tube from top to bottom, consist of respectively feed liquor duct, outer tube bottom and outer tube upper discharge hole road; The outer wall of described inner tube is provided with flight; The top of described gas anchor top connection is connected with the standing valve bottom of exhaust gas prevention pump; Described gas anchor outer tube bottom connects described plug.
In a better embodiment of the present utility model, the open-work on the barrel of described pump barrel middle part is formed with to 45 ° of inclination angles of pump barrel top inclination to outer wall by the pump barrel inwall; Duct on the described gas anchor outer tube wall is formed with to 45 ° of inclination angles of outer tube top inclination to outer wall by outer tube wall.
In a better embodiment of the present utility model, described standing valve is made of valve seat and the spool of being located at the valve seat upside.
In a better embodiment of the present utility model, the described pump barrel top connection external tubing string top connection in upper end.
In a better embodiment of the present utility model, the length of described plunger is greater than the length of pump barrel.
In a better embodiment of the present utility model, sealing is provided with an outer working tube between pump barrel top connection and the standing valve, and the length of described plunger is less than the length of pump barrel.
From the above mentioned, fireflood well gas-tight oil recovery integral tubular column of the present utility model, combination by gas anchor and gas prevention pump, realize under the pump of fireflood high-gas-contained well, twice gas-liquid separation on the pump, improved fireflood producing well production fluid gas-liquid separation efficient, realize the normal production of oil well, improved oil recovery efficiency.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein:
Fig. 1: be the structural representation one of the utility model fireflood well gas-tight oil recovery integral tubular column.
Fig. 2: be the structural representation two of the utility model fireflood well gas-tight oil recovery integral tubular column.
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.
Embodiment one
As shown in Figure 1, the utility model proposes a kind of fireflood well gas-tight oil recovery integral tubular column 100, described gas-tight oil recovery integral tubular column 100 comprises exhaust gas prevention pump 1, gas anchor 2 and the plug 3 that is linked in sequence from top to bottom;
This exhaust gas prevention pump 1 includes pump barrel 11, and the barrel at pump barrel 11 middle parts is provided with open-work 111; Pump barrel 11 bottoms are circumscribed with standing valve 12; Pump barrel 11 tops are circumscribed with pump barrel top connection 13, and pump barrel top connection 13 inner transverse are provided with valve bonnet 14; Valve bonnet 14 is provided with axial center hole, and the centre bore side is provided with a plurality of perforation; Be provided with the plunger 15 that sealed sliding is established in the described pump barrel 11, described plunger 15 is cylindric, one connecting rod 16 axially passes centre bore and the plunger 15 of described valve bonnet 14, and connecting rod 16 bottoms are provided with travelling valve 17, and described travelling valve 17 energy sealed clamping cleats are located at the cylinder bottom of plunger 15; On connecting rod 16 and be positioned at plunger 15 upsides and be provided with upper barrier cover 18, described upper barrier cover 18 can seal covers be located at the cylinder top of plunger 15; The axial distance of described upper barrier cover 18 and travelling valve 17 is greater than the axial length of plunger 15;
Described gas anchor 2 is made of inner tube 22 and the outer tube 23 that gas anchor top connection 21 and spaced radial are set in gas anchor top connection 21 bottoms; Be provided with a plurality of ducts 231 on the tube wall of described outer tube 23 from top to bottom, consist of respectively outer tube feed liquor duct, 23 bottom and outer tube 23 upper discharge hole roads; The outer wall of described inner tube 22 is provided with flight 221; The top of described gas anchor top connection 21 is connected with standing valve 12 bottoms of exhaust gas prevention pump; Described gas anchor outer tube 23 bottoms connect described plug 3.
As shown in Figure 1, in the present embodiment, the length of described plunger 15 is greater than the length of pump barrel 11; Open-work 111 on the described pump barrel 11 middle part barrels is formed with to 45 ° of inclination angles of pump barrel top inclination to outer wall by the pump barrel inwall; Duct 231 on described gas anchor outer tube 23 tube walls is formed with to 45 ° of inclination angles of outer tube top inclination to outer wall by outer tube wall.Described standing valve 12 is made of valve seat 121 and the spool 122 of being located at valve seat 121 upsides.The external tubing string top connection 4 in described pump barrel top connection 13 upper ends.
Fireflood well gas-tight oil recovery integral tubular column of the present utility model 100 use procedures are as follows:
Tubing string begins to be lowered to successively plug 3, gas anchor 2, vented gas prevention pump 1 from the bottom, according to the oil well actual conditions, be lowered to again the oil pipe of certain-length, all adopt screwed connection between each instrument, be lowered at last sucker rod, sucker rod roofbolt bottom is connected with the on-off connector that can dock with the connecting rod 16 of exhaust gas prevention pump 1, when sucker rod is spent down to pump is profound, on-off connector docks with connecting rod 16, adjusts the construction that fulfils assignment behind the dead space.In the manufacturing process, gas and liquid mixture is flow to the annular space of inner and outer pipes by the feed liquor duct, outer tube 23 bottom of the gas anchor 2 of tubing string bottom, because gas-liquid density variation, minute bubbles move upward and build up into air pocket, and crude oil moves downward, and accelerate to be spiral turbulence in the helical annular space, under the effect of centrifugal force, the minute bubbles that do not separated move upward through flight 221 at inboard air pocket and the air-flow of forming of annular space, discharge through outer tube 23 upper discharge hole roads; Crude oil accumulates in the annular space outside and moves downward, and flows into inner tube 22 by the inner tube bottom, thus, finishes the first separation of gas-liquid by gas anchor 2.
When up stroke, it is up that connecting rod 16 and travelling valve 17 drive plunger 15, travelling valve 17 and the sealing of plunger 15 lower surfaces, because the swabbing action of plunger 15, pump barrel 11 internal pressures are reduced, the spool of standing valve 12 (valve ball) 122 is opened, enter in the pump barrel 11 through the first fluid that separates, because the variation of pressure, the gas-liquid Re-isolation is when (in the design should near the peak of up stroke time) behind the plunger 15 up certain distances, the open-work 111 at pump barrel 11 middle parts exposes, gas is discharged the pump barrel 11 of oil well pump from open-work 111, realize the secondary separation of gas-liquid, further alleviates the problem of the gases affect oil well pump work that enters pump barrel 11.During down stroke, connecting rod 16 and performing cover 18 and promotes plungers 15 and move down, and travelling valve 17 is opened, and fluids process plunger 15 inner chambers in the pump barrel 11 drain on the pump.
From the above mentioned, fireflood well gas-tight oil recovery integral tubular column of the present utility model, combination by gas anchor and gas prevention pump, realize under the pump of fireflood high-gas-contained well, twice gas-liquid separation on the pump, improved fireflood producing well production fluid gas-liquid separation efficient, realize the normal production of oil well, improved oil recovery efficiency.
Embodiment two
In the present embodiment, a kind of fireflood well gas-tight oil recovery integral tubular column 200 is proposed; Structure and the principle of the present embodiment and embodiment one are basic identical, and its difference is, as shown in Figure 2, seals between pump barrel top connection 13 and the standing valve 12 and is provided with an outer working tube 19, and the length of described plunger 15 is less than the length of pump barrel 11.
Aspirate formation fluid into pump barrel 11 outside gas is discharged oil well pump in order to prevent part, can be at outer working tube 19 of pump barrel 11 outer increases, shorten simultaneously the length of plunger 15, identical with above-described embodiment one during up stroke, during near the peak of up stroke, the open-work 111 at pump barrel 11 middle parts exposes, and gas is discharged the pump barrel 11 of oil well pump from open-work 111, enter gas storage space between pump barrel 11 and the outer working tube 19.During down stroke, Bottom Runby is during near the down stroke minimum point, and the open-work at pump barrel 11 middle parts exposes from plunger 15 tops, and gas drains on the pump.
The beneficial effect of the present embodiment is identical with embodiment one, does not repeat them here.
The above only is the schematic specific embodiment of the utility model, is not to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (6)
1. fireflood well gas-tight oil recovery integral tubular column, it is characterized in that: described gas-tight oil recovery integral tubular column comprises exhaust gas prevention pump, gas anchor and the plug that is linked in sequence from top to bottom;
This exhaust gas prevention pump includes pump barrel, and the barrel at pump barrel middle part is provided with open-work; The pump barrel bottom is circumscribed with standing valve; The pump barrel top is circumscribed with the pump barrel top connection, and pump barrel top connection inner transverse is provided with valve bonnet; Valve bonnet is provided with axial center hole, and the centre bore side is provided with a plurality of perforation; Be provided with the plunger that sealed sliding is established in the described pump barrel, described plunger is cylindric, and a pitman shaft is to the centre bore that passes described valve bonnet and plunger, and the connecting rod bottom is provided with travelling valve, and described travelling valve energy sealed clamping cleat is located at the cylinder bottom of plunger; On connecting rod and be positioned at the plunger upside and be provided with upper barrier cover, described upper barrier cover can seal cover be located at the cylinder top of plunger; The axial distance of described upper barrier cover and travelling valve is greater than the axial length of plunger;
Described gas anchor is made of the inner and outer tubes that gas anchor top connection and spaced radial are set in gas anchor top connection bottom; Be provided with a plurality of ducts on the tube wall of described outer tube from top to bottom, consist of respectively feed liquor duct, outer tube bottom and outer tube upper discharge hole road; The outer wall of described inner tube is provided with flight; The top of described gas anchor top connection is connected with the standing valve bottom of exhaust gas prevention pump; Described gas anchor outer tube bottom connects described plug.
2. fireflood well gas-tight oil recovery integral tubular column as claimed in claim 1 is characterized in that: the open-work on the barrel of described pump barrel middle part is formed with 45 ° of inclination angles tilting to the pump barrel top to outer wall by the pump barrel inwall; Duct on the described gas anchor outer tube wall is formed with to 45 ° of inclination angles of outer tube top inclination to outer wall by outer tube wall.
3. fireflood well gas-tight oil recovery integral tubular column as claimed in claim 2 is characterized in that: described standing valve is made of valve seat and the spool of being located at the valve seat upside.
4. fireflood well gas-tight oil recovery integral tubular column as claimed in claim 3 is characterized in that: the described pump barrel top connection external tubing string top connection in upper end.
5. fireflood well gas-tight oil recovery integral tubular column as claimed in claim 4, it is characterized in that: the length of described plunger is greater than the length of pump barrel.
6. fireflood well gas-tight oil recovery integral tubular column as claimed in claim 4 is characterized in that: sealing is provided with an outer working tube between pump barrel top connection and the standing valve, and the length of described plunger is less than the length of pump barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220452679 CN202832455U (en) | 2012-09-06 | 2012-09-06 | Fireflood well gas-proof and oil recovery integrated tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220452679 CN202832455U (en) | 2012-09-06 | 2012-09-06 | Fireflood well gas-proof and oil recovery integrated tubular column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832455U true CN202832455U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220452679 Expired - Fee Related CN202832455U (en) | 2012-09-06 | 2012-09-06 | Fireflood well gas-proof and oil recovery integrated tubular column |
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| Country | Link |
|---|---|
| CN (1) | CN202832455U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498785A (en) * | 2013-09-18 | 2014-01-08 | 中国石油天然气股份有限公司 | Fireflooding oil well pump |
| CN114109331A (en) * | 2020-08-27 | 2022-03-01 | 中国石油天然气股份有限公司 | Fireflood oil production pipe column |
-
2012
- 2012-09-06 CN CN 201220452679 patent/CN202832455U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498785A (en) * | 2013-09-18 | 2014-01-08 | 中国石油天然气股份有限公司 | Fireflooding oil well pump |
| CN103498785B (en) * | 2013-09-18 | 2015-08-05 | 中国石油天然气股份有限公司 | Fireflood oil well pump |
| CN114109331A (en) * | 2020-08-27 | 2022-03-01 | 中国石油天然气股份有限公司 | Fireflood oil production pipe column |
| CN114109331B (en) * | 2020-08-27 | 2023-12-26 | 中国石油天然气股份有限公司 | Fireflood string |
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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: 20130327 Termination date: 20210906 |