CN108590544A - A kind of horizontal well underground sand-prevention air trap device and application process - Google Patents
A kind of horizontal well underground sand-prevention air trap device and application process Download PDFInfo
- Publication number
- CN108590544A CN108590544A CN201810460333.0A CN201810460333A CN108590544A CN 108590544 A CN108590544 A CN 108590544A CN 201810460333 A CN201810460333 A CN 201810460333A CN 108590544 A CN108590544 A CN 108590544A
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- Prior art keywords
- tube
- central tube
- connector
- horizontal well
- centralizer
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- 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.)
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- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 238000004804 winding Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 38
- 239000007789 gas Substances 0.000 claims description 29
- 239000007787 solid Substances 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 14
- 230000005484 gravity Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 235000020681 well water Nutrition 0.000 claims 1
- 239000002349 well water Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000004576 sand Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Earth Drilling (AREA)
- Filtering Materials (AREA)
Abstract
A kind of horizontal well underground sand-prevention air trap device and application process are horizontal well sand control gas-tight technologies, and structural relation is that described top centralizer connector one end is connected with top pump, and the other end is connect with central tube；Described central tube one end is connect with top centralizer connector, and the other end is connect with lower part centralizer connector；The diversion pipe is fixed on outside central tube, and in outer tube, one end is connect with outer tube feed liquor hole end surface；The wire-winding sand-filtering tube is fixed in central tube；The bias inlet tube is located at the outside of central tube；The bias inlet tube is located at the centre of outer tube and central tube；Described outer tube one end is outside central tube, and the other end is in lower part centralizer connector exterior；Described lower part centralizer connector one end is connect with central tube, and the other end is connect with short circuit silk plug, and the other end of short circuit silk plug is connect with other tools or oil pipe.
Description
Technical field
The present invention relates to horizontal well sand control gas-tight technology, especially a kind of horizontal well underground sand-prevention air trap device and application side
Method.
Background technology
Horizontal well improves well yield, the important means of recovery ratio is improved, in state as all kinds of oil-gas reservoirs of Efficient Development
Interior each elephant has obtained extensive promotion and application.Since the special well track of horizontal well requires to recover the oil（Gas）Equipment is special
Different structure meets daily production, at present horizontal well production（Gas）Equipment includes jet pump, hydraulic piston pump, the latent screw rod of electricity
5 kinds of pump, bar driven screw pump, electric submersible pump forms.In order to improve production capacity, it will usually the suction inlet of pump are placed on horizontal segment, especially
It is coal bed gas well, for more rapidly more efficient increase coal seam reservoirs desorption degree, it is desirable to pump and suction inlet be put to greatest extent
Set the most deep-well section in horizontal position or well track.It is counted by Liquid output and shows that the pump efficiency of this 5 kinds of forms actually only has 5%-
Between 40%.Influence outer in addition to pumping the working efficiency of itself, the output gas of reservoir is the principal element of restriction pump efficiency, some wells because
Do not go out liquid caused by gas lock to happen occasionally yet.Domestic horizontal well air trap device is substantially zeroed at present, this is because horizontal well is special
What the unicity of downhole tool state caused by different experience track determined.The gas-tight mechanism of straight well is essentially all using gravity
The principle of separation realizes that the separation of gas-liquid, this principle just lose effect in net horizontal section.
Invention content
The object of the present invention is to provide raw change in location is forwarded by tool automatic rotary, gas liquid is made to pass through pressure difference reality
A kind of horizontal well underground sand-prevention air trap device and application process of the operation now detached, it is solved the problems, such as in current technology,
The object of the present invention is achieved like this, it include top centralizer connector, central tube, outer tube, diversion pipe, eccentric inlet tube,
Wire-winding sand-filtering tube, lower part centralizer connector, short circuit silk plug, described top centralizer connector one end is connected with top pump, another
End is connect with central tube；The top centralizer connector plays righting protection outer tube, top centralizer connector in pit shaft
Outer tube is set not contacted with pit shaft jointly with lower part centralizer connector；Described central tube one end is connect with top centralizer connector,
The other end is connect with lower part centralizer connector；The diversion pipe is fixed on outside central tube, in outer tube, one end and outer tube feed liquor nose end
Face connects, and diversion pipe is 8 to 12, and diversion pipe is uniformly distributed around central tube；The wire-winding sand-filtering tube is fixed in central tube；It is described inclined
Heart inlet tube is located at the outside of central tube；The bias inlet tube is located at the centre of outer tube and central tube；Described outer tube one end exists
Outside central tube, the other end is in lower part centralizer connector exterior；Described lower part centralizer connector one end is connect with central tube,
The other end is connect with short circuit silk plug, and the other end of short circuit silk plug is connect with other tools or oil pipe.
One week equally distributed inlet opening is provided on one end end face that the central tube is contacted with outer tube.
The lower part centralizer connector periphery has lower part centralizer connector helicla flute, lower part centralizer connector helicla flute that can make
Its outer circle is uniformly contacted with pit shaft；Lower part centralizer connector outer diameter is more than the outer diameter of outer tube, in pit shaft internal upper part centralizer connector
Play righting protection outer tube jointly with lower part centralizer connector, outer tube is made not contacted with pit shaft, the top centralizer connector
Outer diameter is more than the outer diameter of outer tube, and the periphery of top centralizer connector is provided with helicla flute, and helicla flute can make its outer circle and pit shaft equal
Even contact.
There is spaced slot among the wire-winding sand-filtering tube and central tube, can prevent from passing through more than gap gravel.
Bias inlet tube and the fixed circumferential section of central tube, its own is designed to be eccentric, in horizontal well state, by
In gravity, heavier eccentric part is always in lower end, and in its lower end, there is suction inlet at radial center both ends.
The outer tube end face is provided with inlet.
The diversion pipe is 8 to 12, and diversion pipe is uniformly distributed around central tube.
The application process of the present invention：It is gaseous state in casing topmost according to the flow regime of horizontal well horizontal segment fluid, in
Top is gas and liquid mixture, and middle and lower part is liquid, and lowest part is a small amount of solid particle, and gas, liquid, solid particle pass through outer tube
End face inlet entering tool, due to there is a trip in tool, in the trip mixing liquid respectively by diversion pipe or
Diversion pipe can make mixing liquid have many places channel, prevent in the more current political situation of gas with space in outer tube, uniformly distributed diversion pipe
Portion generates drum and passes through to generate gas lock influence liquid, even if multiple channels generate gas lock at one or two, other channels still can
By liquid, length is more than 2 meters to 4 meters or so, plays guide functions, since the pressure such as gravity and flow velocity direction become
Change, solid particle and liquid sinks since the weighting principle of eccentric inlet tube adjusts suction inlet to casing middle and lower part and are avoided
The gas on top, plays the role of gas-tight；Solid particle and liquid are from the suction inlet of eccentric inlet tube, into the feed liquor of central tube
Hole, the wire-winding sand-filtering tube in central tube filter solid bulky grain, realize three gas, liquid, solid particle liquid detached
Body enters in the pump of top, reaches more preferably effect.
Meaning of the present invention is：The present apparatus can reduce the outer row of methane, hydrogen sulfide gas, prevent the pollution to air；Subtract
Inspection pump number caused by few holddown, pump block；The present invention can effectively realize the separation of gas-liquid, and can carry out gravel filtering,
Greatly improve pump efficiency；And the earth improves the service life of equipment.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of horizontal well underground sand-prevention air trap device, 1, top centralizer connector 2 in figure, in
Heart pipe 3, outer tube 4, eccentric inlet tube 5, wire-winding sand-filtering tube 6, lower part centralizer connector 7, short circuit silk plug 8, top centralizer
Connector helicla flute 9, inlet 10, inlet opening 11, suction inlet 12, lower part centralizer connector helicla flute 13, diversion pipe.
Specific implementation mode
Embodiment 1, the present invention include top centralizer connector 1, central tube 2, outer tube 3, eccentric inlet tube 4, wrapping wire filter sand
Pipe 5, lower part centralizer connector 6, short circuit silk plug 7, diversion pipe 13, described 1 one end of top centralizer connector are connected with top pump,
The other end is connect with central tube 2；The top centralizer connector 1 plays righting protection outer tube 3, top righting in pit shaft
Device connector makes outer tube 3 not contacted with pit shaft jointly with lower part centralizer connector；2 one end of the central tube and top centralizer connector
1 connection, the other end are connect with lower part centralizer connector 6；The diversion pipe 13 is fixed on outside central tube 2, in outer tube 3；Water conservancy diversion
13 one end of pipe is connect with 3 feed liquor hole end surface of outer tube；The wire-winding sand-filtering tube 5 is fixed in central tube 2；The bias inlet tube 4
Positioned at the outside of central tube 6；The bias inlet tube 4 is located at the centre of outer tube 3 and central tube 2；3 one end of the outer tube is at center
Outside pipe 2, the other end is outside lower part centralizer connector 6；Described 6 one end of lower part centralizer connector is connect with central tube 2,
The other end is connect with short circuit silk plug 7, and the other end of short circuit silk plug 7 is connect with other tools or oil pipe.
Be provided in one end outer circle that embodiment 2, the central tube 2 are contacted with eccentric inlet tube 4 one week it is equally distributed
Inlet opening 10.
There are lower part centralizer connector helicla flute 12 in embodiment 3,6 periphery of lower part centralizer connector, and lower part centralizer connects
Head helicla flute 12 can be such that its outer circle is uniformly contacted with pit shaft；Lower part centralizer connector 6 plays the work of righting protection outer tube 3 in pit shaft
With top centralizer connector makes outer tube 3 not contacted with pit shaft jointly with lower part centralizer connector.
Embodiment 4,1 outer diameter of top centralizer connector are more than the outer diameter of outer tube 3, the periphery of top centralizer connector 1
It is provided with top centralizer connector helicla flute 8, top centralizer connector helicla flute 8 can be such that its outer circle is uniformly contacted with pit shaft.
There is spaced slot among embodiment 5, the wire-winding sand-filtering tube 5 and central tube 2, can prevent logical more than gap gravel
It crosses.
Embodiment 6, the eccentric inlet tube 4 and 2 fixed circumferential section of central tube, its own is designed to be eccentric, in water
Horizontal well state, due to gravity, heavier eccentric part is always in lower end, and in its lower end, there is suction inlet at radial center both ends
11。
Embodiment 7,3 end face of the outer tube are provided with inlet 9.
Embodiment 8, the diversion pipe 13 are 8 to 12, and diversion pipe 13 is uniformly distributed around central tube 2.
The application process of embodiment 9, the present invention：According to the flow regime of horizontal well horizontal segment fluid, in casing topmost
For gaseous state, middle and upper part is gas and liquid mixture, and middle and lower part is liquid, and lowest part is a small amount of solid particle, gas, liquid, solid
Grain is by 3 end face inlet of outer tube, 9 entering tool, and due to there is a trip in tool, mixing liquid is distinguished in the trip
Mixing liquid can be made to have many places channel by diversion pipe 13 or diversion pipe 13 and space in outer tube 3, uniformly distributed diversion pipe 13,
It prevents from locally generating drum when gas is more and influences liquid to generating gas lock and pass through, even if multiple channels generate gas at one or two
Lock, other channels still can be by liquid, and length is more than 2 meters to 4 meters or so, play guide functions, due to gravity and
The pressure changes such as flow velocity direction, solid particle and liquid sinks, since the weighting principle of eccentric inlet tube 4 adjusts suction inlet 11
The gas that top is avoided to casing middle and lower part, plays the role of gas-tight；The suction inlet of solid particle and liquid from eccentric inlet tube 4
11, into the inlet opening 10 of central tube 2, the wire-winding sand-filtering tube 5 in central tube 2 filters solid bulky grain, realizes gas, liquid
Three body, solid particle liquid detached enter in the pump of top, reach more preferably effect.
Claims (9)
1. a kind of horizontal well underground sand-prevention air trap device, it includes top centralizer connector（1）, central tube（2）, outer tube（3）, partially
Heart inlet tube (4), wire-winding sand-filtering tube (5), lower part centralizer connector (6), short circuit silk plug (7), diversion pipe (13), it is characterized in that：
The top centralizer connector (1) one end is connected with top pump, and the other end is connect with central tube (2)；The top centralizer
Connector (1) plays righting protection outer tube (3) in pit shaft, and top centralizer connector makes outer jointly with lower part centralizer connector
Pipe (3) is not contacted with pit shaft, and described central tube (2) one end is connect with top centralizer connector (1), the other end and lower part righting
Device connector (6) connects；The diversion pipe (13) is fixed on central tube (2) outside, in outer tube (3), diversion pipe (13) one end and outer tube
(3) feed liquor hole end surface connects；The wire-winding sand-filtering tube (5) is fixed in central tube (2)；During the bias inlet tube (4) is located at
The outside of heart pipe (6)；The bias inlet tube (4) is located at the centre of outer tube (3) and central tube (2)；Described outer tube (3) one end exists
Central tube (2) is external, and the other end is external in lower part centralizer connector (6)；The lower part centralizer connector (6) one end and center
(2) connection is managed, the other end is connect with short circuit silk plug (7), and the other end of short circuit silk plug (7) is connect with other tools or oil pipe.
2. a kind of horizontal well underground sand-prevention air trap device according to claim 1, it is characterized in that：The top centralizer connects
Head (1) outer diameter is more than the outer diameter of outer tube (3), and the periphery of top centralizer connector (1) is provided with top centralizer connector helicla flute
(8), top centralizer connector helicla flute (8) can be such that its outer circle is uniformly contacted with pit shaft.
3. a kind of horizontal well underground sand-prevention air trap device according to claim 1, it is characterized in that：The central tube (2) with
It is provided with one week equally distributed inlet opening (10) in one end outer circle of eccentric inlet tube (4) contact.
4. a kind of horizontal well underground sand-prevention air trap device according to claim 1, it is characterized in that：The lower part centralizer connects
Head (6) periphery has lower part centralizer connector helicla flute (12), lower part centralizer connector helicla flute (12) that can make its outer circle and pit shaft
Uniformly contact；Lower part centralizer connector (6) plays righting protection outer tube (3), top centralizer connector and lower part in pit shaft
Centralizer connector makes outer tube (3) not contacted with pit shaft jointly.
5. a kind of horizontal well underground sand-prevention air trap device according to claim 1, it is characterized in that：The wire-winding sand-filtering tube
(5) and among central tube (2) there is spaced slot, can prevent from passing through more than gap gravel.
6. a kind of horizontal well underground sand-prevention air trap device according to claim 1, it is characterized in that：The bias inlet tube
(4) with central tube (2) fixed circumferential section, its own is designed to be eccentric, in horizontal well state, due to gravity, compared with
The eccentric part of weight is always in lower end, and in its lower end, there is suction inlet (11) at radial center both ends.
7. a kind of horizontal well underground sand-prevention air trap device according to claim 1, it is characterized in that：Outer tube (3) end face
It is provided with inlet (9).
8. a kind of horizontal well underground sand-prevention air trap device according to claim 1, it is characterized in that：The diversion pipe (13) is
8 to 12, diversion pipe (13) is uniformly distributed around central tube (2).
9. a kind of application process of horizontal well underground sand-prevention air trap device described in claim 1, it is characterized in that：According to horizontal well water
The flow regime of flat section fluid is gaseous state in casing topmost, and middle and upper part is gas and liquid mixture, and middle and lower part is liquid, lowest part
For a small amount of solid particle, gas, liquid, solid particle by outer tube 3 end face inlet (10) entering tool, in tool due to
Have a trip, in the trip mixing liquid respectively by diversion pipe (13) or diversion pipe (13) and outer tube (3) interior space,
Uniformly distributed diversion pipe (13) can make mixing liquid have many places channel, prevent from locally generating drum when gas is more to generate
Gas lock influences liquid and passes through, even if multiple channels generate gas lock at one or two, other channels can be still more than by liquid, length
2 meters to 4 meters or so, guide functions are played, due to the pressure changes such as gravity and flow velocity direction, under solid particle and liquid
It is heavy, since the weighting principle of eccentric inlet tube (4) adjusts suction inlet (11) to casing middle and lower part and the gas on top is avoided, is risen
It is acted on to gas-tight；Solid particle and liquid are from the suction inlets (11) of eccentric inlet tube (4), into the inlet opening of central tube (2)
(10), the wire-winding sand-filtering tube (5) in central tube (2) filters solid bulky grain, realizes gas, liquid, solid particle three
The liquid of separation enters in the pump of top, reaches more preferably effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810460333.0A CN108590544B (en) | 2018-05-15 | 2018-05-15 | Underground sand prevention and gas prevention device for horizontal well and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810460333.0A CN108590544B (en) | 2018-05-15 | 2018-05-15 | Underground sand prevention and gas prevention device for horizontal well and application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108590544A true CN108590544A (en) | 2018-09-28 |
| CN108590544B CN108590544B (en) | 2023-10-31 |
Family
ID=63631061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810460333.0A Active CN108590544B (en) | 2018-05-15 | 2018-05-15 | Underground sand prevention and gas prevention device for horizontal well and application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108590544B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747698A (en) * | 1970-11-09 | 1973-07-24 | H Chapman | Primary transfer sub for dual concentric drillpipe |
| CN2157982Y (en) * | 1993-04-22 | 1994-03-02 | 吉林省油田管理局新木采油厂 | Gas and sand preventing device for oil pumping well in oil field |
| CN2281421Y (en) * | 1996-05-28 | 1998-05-13 | 玉环县石油机械厂 | Underground three phase separator |
| CN2898292Y (en) * | 2006-04-26 | 2007-05-09 | 中国石油天然气股份有限公司 | Eccentric sand settling type gas-proof device |
| CN202152675U (en) * | 2011-04-25 | 2012-02-29 | 于成龙 | Rotational-flow high-efficient sand setting device |
| CN102704907A (en) * | 2012-06-16 | 2012-10-03 | 李德传 | Oil well gas anchor |
| CN202900231U (en) * | 2012-09-28 | 2013-04-24 | 中国石油天然气股份有限公司 | External circulation sand-proof gas anchor for pumping well |
| CN103821471A (en) * | 2014-02-20 | 2014-05-28 | 中国石油化工股份有限公司 | Method of processing cement sheath outside screen pipe after cementing well completion |
| CN203879480U (en) * | 2014-04-21 | 2014-10-15 | 西南石油大学 | Pumping well cylindrical type separator |
| CN203879481U (en) * | 2014-04-24 | 2014-10-15 | 西南石油大学 | Pumping well spiral type multi-phase separator |
| CN204552726U (en) * | 2015-03-27 | 2015-08-12 | 中国石油化工股份有限公司 | A kind of sand setting air trap device |
| CN206376773U (en) * | 2017-01-16 | 2017-08-04 | 姚伟 | Gas well ground sand control installation |
| CN208294455U (en) * | 2018-05-15 | 2018-12-28 | 张自平 | A kind of horizontal well underground sand-prevention air trap device |
-
2018
- 2018-05-15 CN CN201810460333.0A patent/CN108590544B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747698A (en) * | 1970-11-09 | 1973-07-24 | H Chapman | Primary transfer sub for dual concentric drillpipe |
| CN2157982Y (en) * | 1993-04-22 | 1994-03-02 | 吉林省油田管理局新木采油厂 | Gas and sand preventing device for oil pumping well in oil field |
| CN2281421Y (en) * | 1996-05-28 | 1998-05-13 | 玉环县石油机械厂 | Underground three phase separator |
| CN2898292Y (en) * | 2006-04-26 | 2007-05-09 | 中国石油天然气股份有限公司 | Eccentric sand settling type gas-proof device |
| CN202152675U (en) * | 2011-04-25 | 2012-02-29 | 于成龙 | Rotational-flow high-efficient sand setting device |
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| CN103821471A (en) * | 2014-02-20 | 2014-05-28 | 中国石油化工股份有限公司 | Method of processing cement sheath outside screen pipe after cementing well completion |
| CN203879480U (en) * | 2014-04-21 | 2014-10-15 | 西南石油大学 | Pumping well cylindrical type separator |
| CN203879481U (en) * | 2014-04-24 | 2014-10-15 | 西南石油大学 | Pumping well spiral type multi-phase separator |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108590544B (en) | 2023-10-31 |
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