CN103498646B - A kind of fireflood well sand control gas-tight oil rig - Google Patents
A kind of fireflood well sand control gas-tight oil rig Download PDFInfo
- Publication number
- CN103498646B CN103498646B CN201310397586.5A CN201310397586A CN103498646B CN 103498646 B CN103498646 B CN 103498646B CN 201310397586 A CN201310397586 A CN 201310397586A CN 103498646 B CN103498646 B CN 103498646B
- Authority
- CN
- China
- Prior art keywords
- sand
- intervalve
- outer tube
- interior pipe
- pump
- 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.)
- Active
Links
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention provides a kind of fireflood well sand control gas-tight oil rig, comprise sand-proof oil-well pump (1) and sand settling type gas anchor (2); Sand settling type gas anchor (2) comprises interior pipe (25) and outer tube (22), the upper end that interior pipe (25) is open and standing valve assembly (14) are sealedly and fixedly connected, the lower end closed of interior pipe (25), the two ends up and down of outer tube (22) are all closed, the first toroidal cavity is formed between outer tube (22) and interior pipe (25), outer tube (22) is provided with duct (221), and interior pipe (25) is provided with intake (27), and intake (27) is positioned at the below of duct (221).This fireflood well sand control gas-tight oil rig can make crude oil before entering pump, carry out Oil-gas Separation, enter pump after sands-proof check, realize fireflood height gassiness and to shake out the normal production of producing well.
Description
Technical field
The present invention relates to technical field of oil extraction equipment, particularly a kind of fireflood well sand control gas-tight oil rig.
Background technology
Combustion in situ utilizes various sparking mode that the oil reservoir in gas injection well is lighted, and continue to inject air or oxygen in oil reservoir, oil reservoir burnt and constantly spreads expansion, crude oil is driven to producing well.Because fireflood gas injection well constantly injects large quantity of air, producing well is also often exhaust shaft, gas production is high, and some fire flood block oil well inherently exists the problem of shaking out, and uses the sand-preventing pump of heavy anti-one to maintain oil well normally produce when not adopting fireflood to develop.But after turning fireflood production, part sand producer tail gas amount raises gradually, situation of shaking out also is aggravated to some extent, and form the compound contradiction of the high gassiness that shakes out, existing sand-preventing pump also exists larger technical limitation in gas-tight, after a large amount of gas enters pump, reduce pump efficiency, affect oil well and normally produce, and along with the prolongation of fireflood production time, the tail gas amount of producing well can strengthen gradually, and the problem of gases affect pump efficiency becomes increasingly conspicuous.Existing gas anchor can not combinationally use with the sand-preventing pump of heavy anti-one, can only combinationally use with common sand-preventing pump, although oil well pump can be alleviated by gases affect, because fireflood is shaked out seriously, oil well output is low, part sand grains is difficult to take to ground with liquid stream, still there is the problem of sand card.That is, existing technology or sand control capability is good, otherwise gas-tight performance is good, is difficult to the two organic assembling and uses.
Summary of the invention
In order to solve the technical problem that when existing sand-preventing pump and gas anchor combinationally use, sand control gas-tight effect is bad, the invention provides a kind of fireflood well sand control gas-tight oil rig.This fireflood well sand control gas-tight oil rig can make crude oil before entering pump, carry out Oil-gas Separation, enter pump after sands-proof check, realize fireflood height gassiness and to shake out the normal production of producing well.
The present invention is the technical scheme solving the employing of its technical problem: a kind of fireflood well sand control gas-tight oil rig, comprises sand-proof oil-well pump and the sand settling type gas anchor being arranged on sand-proof oil-well pump bottom; Sand-proof oil-well pump comprises pump pillar and is arranged on the standing valve assembly in pump pillar; Sand settling type gas anchor comprises interior pipe and fixed cover and is located at outer tube outside interior pipe, the upper end that interior pipe is open and standing valve assembly are sealedly and fixedly connected, the lower end closed of interior pipe, the two ends up and down of outer tube are all closed, the first toroidal cavity is formed between outer tube and interior pipe, outer tube is provided with and is communicated with the outside of outer tube and the duct of this first toroidal cavity, and the inside of pipe and the intake of this first toroidal cavity in interior pipe is provided with and is communicated with, intake is positioned at the below in duct.
Also intervalve is arranged with between inner and outer tubes, the second toroidal cavity is formed between interior pipe and intervalve, the 3rd toroidal cavity is formed between intervalve and outer tube, upper end and the pump pillar of intervalve are sealedly and fixedly connected, the 4th toroidal cavity formed between pump pillar and standing valve assembly is communicated with the second toroidal cavity, and the lower end of intervalve is lower than the lower end of interior pipe.
Intervalve is also provided with intake, and the 3rd toroidal cavity is communicated with the inside of interior pipe with the intake arranged on inner pipe by the intake be arranged on intervalve successively.
Packing ring is provided with between interior pipe and intervalve, packing ring is provided with the first through hole of horizontal direction, intake on intervalve is communicated with by the first through hole with the intake arranged on inner pipe, packing ring is provided with the second through hole of vertical direction, and the 4th toroidal cavity is communicated with the inside of the lower end of intervalve by the second through hole.
Between intervalve and outer tube, the outer wall of intervalve is provided with flight, and flight is between duct and intake.
The lower end of intervalve is lower than the lower end of outer tube, and the lower end of intervalve is connected with plug.
The lower end of outer tube is lower than the lower end of interior pipe, the lower end of outer tube is provided with unloads sand valve automatically, automatically unload sand valve and comprise valve wall, valve wall comprises interior valve cylinder and is set in the outer valve cylinder outside interior valve cylinder, the upper end of interior valve cylinder is communicated with the 3rd toroidal cavity, the lower end of interior valve cylinder is provided with valve ball, is provided with the spring that can provide restoring force to valve ball between interior valve cylinder and outer valve cylinder.
Automatically unloading sand valve is arranged on outside the lower end of outer tube, is provided with pocket outside the lower end of outer tube, automatically unloads sand valve and is arranged in pocket.
The upper end of sand settling type gas anchor is provided with top connection, and the upper end of intervalve is sealedly and fixedly connected by top connection and pump pillar.
Be provided with the pump barrel be fixedly connected with standing valve assembly in the pump pillar of sand-proof oil-well pump, be provided with plunger in pump barrel, pump barrel length is less than the length of plunger.
The invention has the beneficial effects as follows: this fireflood well sand control gas-tight oil rig can make crude oil before entering pump, carry out Oil-gas Separation, enter pump after sands-proof check, realize fireflood height gassiness and to shake out the normal production of producing well.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, fireflood well sand control gas-tight oil rig of the present invention is described in further detail.
Fig. 1 is the assembling drawing of fireflood well sand control gas-tight oil rig.
Fig. 2 is the sectional view in A-A direction in Fig. 1.
Fig. 3 is the partial enlarged view at A position in Fig. 1.
Fig. 4 is the partial enlarged view at B position in Fig. 1.
Wherein 1. sand-proof oil-well pumps, 11. plungers, 12. pump barrels, 13. pump pillars, 131. the 4th toroidal cavities, 14. standing valve assemblies, 2. sand settling type gas anchor, 21. top connections, 22. outer tubes, 221. ducts, 222. the 3rd toroidal cavities, 23. intervalves, 231. second toroidal cavities, 24. flights, pipe in 25., 26.O type circle, 27. intakes, 28. unload sand valve automatically, 281. valve walls, valve cylinder in 282., 283. outer valve cylinders, 284. valve ball, 285. springs, 29. packing rings, 291. first through holes, 292. second through hole, 3. plugs.
Detailed description of the invention
Below in conjunction with accompanying drawing, fireflood well sand control gas-tight oil rig of the present invention is described in further detail.A kind of fireflood well sand control gas-tight oil rig, comprises sand-proof oil-well pump 1 and the sand settling type gas anchor 2 being arranged on sand-proof oil-well pump 1 bottom; The standing valve assembly 14 that sand-proof oil-well pump 1 comprises pump pillar 13 and is arranged in pump pillar 13; Sand settling type gas anchor 2 comprises interior pipe 25 and fixed cover and is located at outer tube 22 outside interior pipe 25, the upper end that interior pipe 25 is open and standing valve assembly 14 are sealedly and fixedly connected by O type circle 26, the lower end closed of interior pipe 25, the two ends up and down of outer tube 22 are all closed, the first toroidal cavity is formed between outer tube 22 and interior pipe 25, outer tube 22 is provided with and is communicated with the outside of outer tube 22 and the duct 221 of this first toroidal cavity, the inside of pipe 25 and the intake 27 of this first toroidal cavity in interior pipe 25 is provided with and is communicated with, intake 27 is positioned at the below in duct 221, as shown in Figure 1.
In manufacturing process, gas and liquid mixture flows to this first toroidal cavity by the duct, outer tube 22 top 221 of sand settling type gas anchor 2, then the inside of interior pipe 25 is entered into from intake 27, when plunger 11 moves upward, the crude oil of two valve balls in standing valve assembly 14 and the inside of interior pipe 25 can together with to have moved upward oil pumping process.
In order to prevent sand grains holddown in sand-proof oil-well pump 1, intervalve 23 is also arranged with between interior pipe 25 and outer tube 22, the second toroidal cavity 231 is formed between interior pipe 25 and intervalve 23, the 3rd toroidal cavity 222 is formed between intervalve 23 and outer tube 22, upper end and the pump pillar 13 of intervalve 23 are sealedly and fixedly connected, the 4th toroidal cavity 131 formed between pump pillar 13 and standing valve assembly 14 is communicated with the second toroidal cavity 231, and the lower end of intervalve 23 is lower than the lower end of interior pipe 25.Like this, when the outer wall of pump barrel 12 has sand grains, then sand grains can enter downwards the second toroidal cavity 231 along the outer wall of pump barrel 12 continues move downward and be collected.
When this fireflood well sand control gas-tight oil rig contains intervalve 23, intervalve 23 is also provided with intake 27,3rd toroidal cavity 222 is communicated with the inside of the intake 27 be arranged on interior pipe 25 with interior pipe 25 by the intake 27 be arranged on intervalve 23 successively, as shown in Figure 4.So just achieve being communicated with of the inside of the 3rd toroidal cavity 222 and interior pipe 25.
Packing ring 29 is provided with between interior pipe 25 and intervalve 23, packing ring 29 is provided with the first through hole 291 of horizontal direction, intake 27 on intervalve 23 is communicated with by the first through hole 291 with the intake 27 be arranged on interior pipe 25, packing ring 29 can ensure that liquid can not leak when the 3rd toroidal cavity 222 enters the inside of interior pipe 25, packing ring 29 is provided with the second through hole 292 of vertical direction, 4th toroidal cavity 131 is communicated with the inside of the lower end of intervalve 23 by the second through hole 292, as shown in Figure 2.Arranging the second through hole 292 can make sand grains move along the lower end of continuing inside pipe 25 and intervalve 23 after the outer wall of pump barrel 12 enters the second toroidal cavity 231 downwards, is convenient to the centralized collection of sand grains.
Between intervalve 23 and outer tube 22, the outer wall of intervalve 23 is provided with flight 24, and flight 24 is between duct 221 and intake 27.Flight 24 can be separated the gas-liquid mixed entering the 3rd toroidal cavity 222, and flight 24 is also provided with steam vent.
The lower end of intervalve 23 is lower than the lower end of outer tube 22, the lower end of intervalve 23 is lower than the lower end of interior pipe 25, and the lower end of intervalve 23 is connected with plug 3, during use, the lower end of intervalve 23 can also connect plug 3 after connected pipes again, collects the sand grains flowed downward along the outer wall of pump barrel 12 with this oil pipe.
The lower end of outer tube 22 is lower than the lower end of interior pipe 25, the lower end of outer tube 22 is provided with unloads sand valve 28 automatically, automatically unload sand valve 28 and comprise valve wall 281, the outer valve cylinder 283 that valve wall 281 comprises interior valve cylinder 282 and is set in outside interior valve cylinder 282, the upper end of interior valve cylinder 282 is communicated with the 3rd toroidal cavity 222, the lower end of interior valve cylinder 282 is provided with valve ball 284, is provided with the spring 285 that can provide restoring force to valve ball 284, as shown in Figure 3 between interior valve cylinder 282 and outer valve cylinder 283.After the lower end of the 3rd toroidal cavity 222 deposited certain sand grains, responsive spring 285 under the effect of sand grains gravity by valve ball 284 to pressing down, thus sand grains is gushed from interior valve cylinder 282, got stuck by sand grains to prevent spring 285, so valve wall 281 is arranged to tube-in-tube structure, make it comprise interior valve cylinder 282 and outer valve cylinder 283, spring 285 is arranged between interior valve cylinder 282 and outer valve cylinder 283.In addition, automatically unload sand valve 28 and be arranged on outside the lower end of outer tube 22, be provided with pocket outside the lower end of outer tube 22, automatically unload sand valve 28 and be arranged in pocket, this pocket is for taking up the sand grains automatically unloading sand valve 28 and gush.
The upper end of sand settling type gas anchor 2 is provided with top connection 21, and the upper end of intervalve 23 is sealedly and fixedly connected by top connection 21 and pump pillar 13.Be provided with the pump barrel 12 be fixedly connected with standing valve assembly 14 in the pump pillar 13 of sand-proof oil-well pump 1, be provided with plunger 11 in pump barrel 12, pump barrel 12 length is less than the length of plunger 11, prevents sand grains from blocking sand-proof oil-well pump 1 like this.
The course of work of this fireflood well sand control gas-tight oil rig is as follows: plug 3, oil pipe, sand settling type gas anchor 2 and sand-proof oil-well pump 1 are assembled successively as shown in Figure 1, all adopt screwed connection between each instrument.When wherein sand settling type gas anchor 2 is connected with sand-proof oil-well pump 1, inner chamber bottom the standing valve assembly 14 that sand-proof oil-well pump 1 is first inserted in interior pipe 25 upper end of sand settling type gas anchor 2, realizes sealing by O type circle 26.The top connection 21 of sand settling type gas anchor 2 is afterwards connected with sand-proof oil-well pump 1 lower end again.Then according to oil well actual conditions, then under enter the oil pipe of certain length, the lower end of this oil pipe is connected with the upper end of sand-proof oil-well pump 1.Connect plunger 11 bottom rod string, will enter under sucker rod in oil pipe, plunger 11 enters after pump barrel 12 is hampered, and adjusts dead space and to fulfil assignment construction.In manufacturing process, gas and liquid mixture flows to the 3rd toroidal cavity 222 between intervalve 23 and outer tube 22 by the duct 221 on outer tube 22 top of the sand settling type gas anchor 2 of tubing string bottom, due to gas-liquid density variation, minute bubbles move upward and build up into air pocket, crude oil moves downward, helically turbulent flow is accelerated in helical annular space, under the influence of centrifugal force, the minute bubbles be not separated form air pocket and air-flow inside the 3rd toroidal cavity 222, steam vent on flight 24 moves upward, and discharges through outer tube 22 upper discharge hole or duct 221; Crude oil moves across the inside that intake 27 flows into interior pipe 25 under accumulating in the 3rd toroidal cavity 222 lateral, is then inhaled into sand-proof oil-well pump 1.The reservoir sand accumulation bottom gas anchor outer tube 22 gradually of sand-proof oil-well pump 1 is not flowed into liquid, when reaching a certain height, because the density of reservoir sand is greater than formation fluid density, the spring 285 of valve ball 284 two-way pressure official post design sensitivity is stretched, unload sand valve 28 to have opened and automatically unload sand, sand grains is unloaded in pocket, avoids long-term accumulation to cause intake 27 to be buried by sand.After liquid is drawn into sand-proof oil-well pump 1, the plunger 11 designed due to sand-proof oil-well pump 1 is longer than pump barrel 12, in sucker rod twitch process up and down, plunger 11 upper end is exposed at outside pump barrel 12 all the time, can effectively prevent sand grains from entering the fit clearance holddown of pump barrel 12 and plunger 11; In addition, can not take to sink gradually to ground to the sand grains on pump barrel 12 with liquid stream and continue downward deposition by under the stirring of liquid stream along pump barrel 12 and sandwich passage i.e. the 4th toroidal cavity 131 of pump pillar 13, flow through the intervalve 23 of sand settling type gas anchor 2 and sandwich passage i.e. second toroidal cavity 231 of interior pipe 25 again, sink in the storage sand oil pipe pipe between the lower end of intervalve 23 and plug 3, effectively avoid holddown problem.Thus finally reach the object of gas-tight sand control oil pumping.
The above, be only specific embodiments of the invention, can not limit the scope that invention implements with it, so the displacement of its equivalent assemblies, or the equivalent variations done according to scope of patent protection of the present invention and modification, all still should belong to the category that this patent is contained.
Claims (9)
1. a fireflood well sand control gas-tight oil rig, is characterized in that, described fireflood well sand control gas-tight oil rig comprises sand-proof oil-well pump (1) and is arranged on the sand settling type gas anchor (2) of sand-proof oil-well pump (1) bottom;
Sand-proof oil-well pump (1) comprises pump pillar (13) and is arranged on the standing valve assembly (14) in pump pillar (13);
Sand settling type gas anchor (2) comprises interior pipe (25) and fixed cover is located at interior pipe (25) outer tube outward (22), the upper end that interior pipe (25) is open and standing valve assembly (14) are sealedly and fixedly connected, the lower end closed of interior pipe (25), the two ends up and down of outer tube (22) are all closed, the first toroidal cavity is formed between outer tube (22) and interior pipe (25), outer tube (22) is provided with and is communicated with the outside of outer tube (22) and the duct (221) of this first toroidal cavity, the pipe inside of (25) and the intake (27) of this first toroidal cavity in interior pipe (25) is provided with and is communicated with, intake (27) is positioned at the below of duct (221),
Intervalve (23) is also arranged with between interior pipe (25) and outer tube (22), the second toroidal cavity (231) is formed between interior pipe (25) and intervalve (23), the 3rd toroidal cavity (222) is formed between intervalve (23) and outer tube (22), upper end and the pump pillar (13) of intervalve (23) are sealedly and fixedly connected, the 4th toroidal cavity (131) formed between pump pillar (13) and standing valve assembly (14) is communicated with the second toroidal cavity (231), the lower end of intervalve (23) is lower than the lower end of interior pipe (25).
2. fireflood well sand control gas-tight oil rig according to claim 1, it is characterized in that: intervalve (23) is also provided with intake (27), the 3rd toroidal cavity (222) is communicated with the inside of interior pipe (25) with the intake (27) be arranged on interior pipe (25) by the intake (27) be arranged on intervalve (23) successively.
3. fireflood well sand control gas-tight oil rig according to claim 1, it is characterized in that: between interior pipe (25) and intervalve (23), be provided with packing ring (29), packing ring (29) is provided with first through hole (291) of horizontal direction, intake (27) on intervalve (23) is communicated with by the first through hole (291) with the intake (27) be arranged on interior pipe (25), packing ring (29) is provided with second through hole (292) of vertical direction, 4th toroidal cavity (131) is communicated with by the inside of the second through hole (292) with the lower end of intervalve (23).
4. fireflood well sand control gas-tight oil rig according to claim 1, it is characterized in that: between intervalve (23) and outer tube (22), the outer wall of intervalve (23) is provided with flight (24), and flight (24) is positioned between duct (221) and intake (27).
5. fireflood well sand control gas-tight oil rig according to claim 1, is characterized in that: the lower end of intervalve (23) is lower than the lower end of outer tube (22), and the lower end of intervalve (23) is connected with plug (3).
6. fireflood well sand control gas-tight oil rig according to claim 1, it is characterized in that: the lower end of outer tube (22) is lower than the lower end of interior pipe (25), the lower end of outer tube (22) is provided with unloads sand valve (28) automatically, automatically unload sand valve (28) and comprise valve wall (281), valve wall (281) comprises interior valve cylinder (282) and is set in interior valve cylinder (282) outer valve cylinder (283) outward, the upper end of interior valve cylinder (282) is communicated with the 3rd toroidal cavity (222), the lower end of interior valve cylinder (282) is provided with valve ball (284), the spring (285) that restoring force can be provided to valve ball (284) is provided with between interior valve cylinder (282) and outer valve cylinder (283).
7. fireflood well sand control gas-tight oil rig according to claim 6, it is characterized in that: automatically unload sand valve (28) and be arranged on outside the lower end of outer tube (22), be provided with pocket outside the lower end of outer tube (22), automatically unload sand valve (28) and be arranged in pocket.
8. fireflood well sand control gas-tight oil rig according to claim 1, it is characterized in that: the upper end of sand settling type gas anchor (2) is provided with top connection (21), the upper end of intervalve (23) is sealedly and fixedly connected by top connection (21) and pump pillar (13).
9. fireflood well sand control gas-tight oil rig according to claim 1, it is characterized in that: in the pump pillar (13) of sand-proof oil-well pump (1), be provided with the pump barrel (12) be fixedly connected with standing valve assembly (14), be provided with plunger (11) in pump barrel (12), pump barrel (12) length is less than the length of plunger (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310397586.5A CN103498646B (en) | 2013-09-04 | 2013-09-04 | A kind of fireflood well sand control gas-tight oil rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310397586.5A CN103498646B (en) | 2013-09-04 | 2013-09-04 | A kind of fireflood well sand control gas-tight oil rig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103498646A CN103498646A (en) | 2014-01-08 |
| CN103498646B true CN103498646B (en) | 2016-04-06 |
Family
ID=49863896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310397586.5A Active CN103498646B (en) | 2013-09-04 | 2013-09-04 | A kind of fireflood well sand control gas-tight oil rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103498646B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329069B (en) * | 2014-10-21 | 2017-07-07 | 中国石油天然气股份有限公司 | Fire flood system |
| CN106567695A (en) * | 2016-11-02 | 2017-04-19 | 中国石油化工股份有限公司 | Oil well gas prevention system |
| CN109538452B (en) * | 2018-12-17 | 2024-02-09 | 中船重工中南装备有限责任公司 | Thickened oil pump |
| CN113217362B (en) * | 2020-12-31 | 2022-12-09 | 中船重工中南装备有限责任公司 | Sand-proof and gas-proof oil-well pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3643740A (en) * | 1969-04-28 | 1972-02-22 | Kork Kelley | Method and apparatus for effecting gas control in oil wells |
| US4676308A (en) * | 1985-11-22 | 1987-06-30 | Chevron Research Company | Down-hole gas anchor device |
| CN101949280A (en) * | 2010-09-08 | 2011-01-19 | 王小军 | Anti-scaling and anti-sand device connected with oil pumping tubing string into whole and application method |
| CN202250025U (en) * | 2011-09-16 | 2012-05-30 | 克拉玛依胜利高原机械有限公司 | Spiral gas anchor |
| CN203515492U (en) * | 2013-09-04 | 2014-04-02 | 中国石油天然气股份有限公司 | Fireflood well sand-gas-preventing oil pumping device |
-
2013
- 2013-09-04 CN CN201310397586.5A patent/CN103498646B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3643740A (en) * | 1969-04-28 | 1972-02-22 | Kork Kelley | Method and apparatus for effecting gas control in oil wells |
| US4676308A (en) * | 1985-11-22 | 1987-06-30 | Chevron Research Company | Down-hole gas anchor device |
| CN101949280A (en) * | 2010-09-08 | 2011-01-19 | 王小军 | Anti-scaling and anti-sand device connected with oil pumping tubing string into whole and application method |
| CN202250025U (en) * | 2011-09-16 | 2012-05-30 | 克拉玛依胜利高原机械有限公司 | Spiral gas anchor |
| CN203515492U (en) * | 2013-09-04 | 2014-04-02 | 中国石油天然气股份有限公司 | Fireflood well sand-gas-preventing oil pumping device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103498646A (en) | 2014-01-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103498646B (en) | A kind of fireflood well sand control gas-tight oil rig | |
| CN103015958B (en) | Underground Spiral gas-liquid separation re-injection device and re-injection method | |
| RU2440513C1 (en) | Bottom-hole oil pump | |
| CN203559876U (en) | Closed gas-lift liquid discharge combined tubing string for low-pressure oil and gas well | |
| CN104074494B (en) | Combination type well casing gas recovery device | |
| CN102606118A (en) | Subdivision water injection, ball-off and profile control integrated tubular column for water injection well of oilfield and process of tubular column | |
| CN104047588A (en) | Underground gas-liquid separation tubular column | |
| CN101769271B (en) | Deep-well oil-extraction external flow-channel direct and reverse circulation freely-throwing jet injector oil production method and device | |
| CN104329069A (en) | Fire flooding system | |
| CN203515492U (en) | Fireflood well sand-gas-preventing oil pumping device | |
| CN202467796U (en) | Sub-divisional water injection ball-launching profile control integrated pipe post for oil field water injection well | |
| CN108691523A (en) | A kind of concentric little oil pipe gas-lift working barrel and its airlift unit | |
| CN208456567U (en) | A kind of concentric little oil pipe gas-lift working barrel and its airlift unit | |
| CN108071365A (en) | A kind of coal bed gas gas production, draining and water injection integral pipe column | |
| CN104806211B (en) | One kind takes over calm the anger extracting device of oil and method | |
| CN206722809U (en) | A kind of flow string | |
| CN204284026U (en) | The built-in gas lift negative pressure pump of a kind of oil pipe | |
| CN204532295U (en) | One takes over extracting device of oil of calming the anger | |
| CN202832455U (en) | Fireflood well gas-proof and oil recovery integrated tubular column | |
| CN104251199A (en) | Anti-air-locking oil well pump | |
| CN204252987U (en) | Fire flood system | |
| CN209195388U (en) | Lifting column and tubular column system | |
| CN206770187U (en) | A kind of anti-coal dust double acting suction pump for coal bed gas extraction | |
| CN202560182U (en) | Gas and sand anchor for oilfield well | |
| CN207315320U (en) | Speed carries effect Guan Tixiao lifting devices under a kind of pumping unit well pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |