CN106368630B - A kind of sand washing method and specific purpose tool - Google Patents
A kind of sand washing method and specific purpose tool Download PDFInfo
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- CN106368630B CN106368630B CN201610884425.2A CN201610884425A CN106368630B CN 106368630 B CN106368630 B CN 106368630B CN 201610884425 A CN201610884425 A CN 201610884425A CN 106368630 B CN106368630 B CN 106368630B
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- sand
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
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- 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)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of sand washing method and specific purpose tools, belong to workover treatment technical field, are suitable for oil gas water well pit shaft construction.The sand washing specific purpose tool includes outer tube and sand washing inner tube, and outer tube is successively threadedly coupled by oil pipe, hanging pup joint and rotation outer cylinder, and sand washing inner tube is successively threadedly coupled by packoff nipple, washing pipe, rotation inner cylinder and drill bit.The present invention establishes the sand cleaning fluid circulation canal of outer tube Yu sand washing inner tube using the toric space of packoff nipple sealing washing pipe and outer tube, realizes positive and negative circulation construction under washing pipe sliding mode；Using rotation outer cylinder, the matched rotary power in rotation inner cylinder transmitting outer tube ground, sand washing bit is driven, realizes the rotary drilling construction requirement under complex hole condition.
Description
Technical field
The present invention relates to a kind of sand washing method and specific purpose tools, belong to workover treatment technical field, are suitable for oil gas water well
Pit shaft construction.
Background technique
Due to formation sand production or technological measure back-up sand in oil gas water well production process, cause to stockpile the burial of sand column in pit shaft
Target zone causes oil well output decline or water injection pressure to increase, influences the normal production of oil-water well.Sand washing is using matched
Sand column in pit shaft is crushed, breaks up, and recycles to return with workover fluid and take by tubing string, tool, equipment and swiftly flowing workover fluid
It takes ground out of, to remove the product sand of pit shaft, restores and improve a kind of method of oil well output or water injection rate.
Conventional construction mode, which is mainly taken, rushes next single depth, stop pump truck feed flow, connect change it is next single,
Can continue lower step construction, termination of pumping connect change it is single during, the sand grains that sand cleaning fluid carries sinks, and sand washing efficiency is caused to drop
It is low, and easily sand is caused to bury sand-flushing pipe column, lock of tool drilling occurs.
Application No. is the small washing pipe continuous flushing sand tubular columns of 201310299811.1 patent disclosure, including small washing pipe, center
Pipe, bearing assembly, impeller, sand shovel, when construction, are suppressed from oil pipe, and liquid-driving impeller rotary blade drives sand shovel to rotate together,
Realize the loosening to sand setting；Seal assembly establishes the pressure difference between oil pipe and small washing pipe, in the work of pressure difference and the self weight of small washing pipe
Under, sand-flushing pipe column comes downwards to sand face along oil pipe, after sand loosens, is taken out of by circulation fluid by oil pipe circulation.Not due to impeller
Sealing, causes rotary power limited, the rotation in harder sand face is unable to satisfy under tubing string pressurized conditions, causes sand washing without drilling depth,
Sand washing efficiency reduces.
Patent No. ZL200720029715.5 discloses New type continuous sand-washing equipment.The device mainly by sealed outer pipe and
Sealed inner tube composition is impacted when use under the action of pump pressure by sand washing inner tube shaft bottom of going directly to be formed to shaft bottom sand,
It is returned out with sand cleaning fluid.This device does not design rotary drilling structure, for harder agglutination sand face because rushing caused by can not being crushed
Sand is without drilling depth.
Summary of the invention
The purpose of the invention is to overcome bit freezing risk existing for conventional sand washing technology, existing continuous sand flushing device without
Method realizes rotary drilling, and the defect of sand washing low efficiency provides a kind of safe and efficient continuous sand flushing method and specific purpose tool.
The technical scheme is that
A kind of sand washing specific purpose tool, including outer tube and sand washing inner tube, outer tube is by oil pipe, hanging pup joint and rotates outer cylinder successively
It is threadedly coupled, sand washing inner tube is successively threadedly coupled by packoff nipple, washing pipe, rotation inner cylinder and drill bit.
The central through hole of hanging pup joint is conical seat.
Rotation outer cylinder is tubular structure, and lower port is guide shoe, and central through hole is equipped at least two longitudinal bar shaped driving keys.
Rotation inner cylinder is tubular structure, and outer diameter is less than the internal diameter of the bar shaped driving key of rotation outer cylinder, and outer wall is equipped with
Longitudinal bar shaped that at least two outer diameters are greater than the bar shaped driving key internal diameter of rotation outer cylinder is driven block key.
Packoff nipple is successively threadedly coupled by top connection, connecting short section, lower contact, and opening upwards are set on connecting short section
Leather cup type packing element, connecting short section are at least 2 grades combination connections, and the lower part of lower contact is corresponding with the conical seat of hanging pup joint
Cone.
A kind of sand washing method, the group supplying well including sand-flushing pipe column, direct circulation sand washing, inverse circular sand washing adapter, rotary drilling punching
Sand construction procedure.
Before construction, it is sequentially connected tripping in drill bit, rotation inner cylinder, sand clean out pipe, packoff nipple, then successively suit tripping in is outstanding
Pipe nipple, rotation outer cylinder, oil pipe are hung, until sand face position in pit shaft, packoff nipple, sand clean out pipe, rotation inner cylinder slide in succession at this time
Into in outer tube, the sand-flushing pipe column of outer tube, sand washing inner tube composition is completed.
When causing sand washing to be hampered there are bulky grain hard sand lump, sand column cement plane, casing burr in pit shaft, outer tube is transferred
Enter in rotation outer cylinder to rotation inner cylinder, outer tube connects top drive apparatus, drives oil pipe and rotation outer cylinder rotation, rotates the item of outer cylinder
Shape driving key is overlapped with the bar shaped transmission block key side of rotation inner cylinder, is driven rotation inner cylinder rotating, to drive bit, is broken
Bulky grain hard sand lump and sand column cement plane, milling pit shaft burr in broken pit shaft, and ground is carried out with sand cleaning fluid, under continuing
It puts and spun outer tube, continuous intensification sand washing depth gradually rotates sand washing to design requirement sand washing position.
Using effect of the present invention:
The present invention establishes the sand cleaning fluid of outer tube Yu sand washing inner tube using the toric space of packoff nipple sealing washing pipe and outer tube
Circulation canal, and realize annular space sealing of the washing pipe under outer tube bore sliding mode, meet rushing under positive and negative circulation sand washing state
Sand construction requirement.
The present invention drives the rotation of sand washing drill bit using rotation outer cylinder rotary power matched with rotation inner cylinder transmitting outer tube ground
Turn, so that bulky grain hard sand lump and sand column cement plane, milling pit shaft burr in broken pit shaft, meet the rotation under complex hole condition
Turn drilling construction requirement.
The present invention is declined with pit shaft sand cylinder in outer tube using sand washing inner tube in construction and slides downlink, from
It is dynamic to deepen sand washing depth, not termination of pumping is realized, does not connect and changes single continuous sand flushing construction, sand washing efficiency is improved, reduces sand washing
Bit freezing risk.
The present invention is using the matched blowout preventer of well head and manifold apparatus, it can be achieved that the circulation sand washing under well head air-tight state is applied
Work reduces construction environment pollution.
Detailed description of the invention
Fig. 1 is continuous sand flushing structural schematic diagram of the present invention；
Fig. 2 is rotary drilling sand washing structural schematic diagram of the present invention.
Specific embodiment
Invention is further explained with reference to the accompanying drawings and examples.
As shown in Fig. 1, Fig. 2, a kind of sand washing specific purpose tool includes outer tube and sand washing inner tube, and outer tube is by oil pipe 6, hanging pup joint
2 are successively threadedly coupled with rotation outer cylinder 3, and by packoff nipple 1, washing pipe 5, rotation inner cylinder 4 and drill bit 7, successively screw thread connects inner tube
It connects.
The central through hole of the hanging pup joint 2 is conical seat, and the upper and lower ends of hanging pup joint 2 are equipped with connection screw thread.
The rotation outer cylinder 3 is tubular structure, and lower port is guide shoe, and central through hole is equipped at least two longitudinal bar shapeds
Driving key 301.
The packoff nipple 1 is successively threadedly coupled by top connection 101, connecting short section 102, lower contact 104 and is formed, connection
Cartridge 103 is set on pipe nipple 102, the lower part of lower contact 104 is cone corresponding with the conical seat of hanging pup joint 2.
The rotation inner cylinder 4 is tubular structure, and outer diameter is less than the internal diameter of the bar shaped driving key 301 of rotation outer cylinder 3,
Longitudinal bar shaped that outer wall is equipped with 301 internal diameter of bar shaped driving key that at least two outer diameters are greater than rotation outer cylinder 3 is driven block key 401.
The leather cup type packing element of opening upwards is set on the connecting short section 102 of preferred packoff nipple 1, connecting short section 102 is
At least 2 grades combination connections.
A kind of sand washing method includes following construction procedure:
1, the group of sand-flushing pipe column is incorporated well:
Before construction, it is sequentially connected tripping in drill bit 7, rotation inner cylinder 4, sand clean out pipe 5, packoff nipple 1, then successively set loads
Enter hanging pup joint 2, rotation outer cylinder 3, oil pipe 6, until pit shaft in sand face position, at this time packoff nipple 1, sand clean out pipe 5, rotation inner cylinder
4 slip into outer tube in succession, complete the sand-flushing pipe column of outer tube, sand washing inner tube composition.
2, direct circulation sand washing:
Outer tube connects wellhead manifold and construction pump truck, is just suppressing to outer tube, and sand cleaning fluid flows through short to sealing along 6 inner cavity of oil pipe
Section 1, the leather cup type packing element forced expansion that packoff nipple 1 is set at this time seal the annular space of Sealing 1 and 6 inner wall of oil pipe,
The direct circulation channel of outer tube and the communication of sand washing inner tube is established, sand cleaning fluid flows through packoff nipple 1, sand clean out pipe 5, rotation inner cylinder 4 and bores
First 7 carry out sand washing, break up sand column in pit shaft, and carry sand grains and return to ground along outer tube and shaft in wall annular space.Continue sand washing,
Sand washing inner tube declines with sand face in pit shaft and is continued to decline under Gravitative Loads, and not termination of pumping does not connect and changes single continuous direct circulation punching
Sand is to design requirement sand washing position.
3, inverse circular sand washing adapter:
Wellhead packer, sealed outer pipe and shaft in wall annular space are closed, connected wellhead manifold by annular space sealing position and is applied
Work pump truck opens function sand washing pump, suppresses to the annular space between outer tube and casing is counter, and sand cleaning fluid is along outer tube and shaft in wall annular
Space comes downwards to drill bit 7, carries out sand washing, breaks up in pit shaft sand column and carries and returns on sand grains, flow through rotation inner cylinder 4, sand clean out pipe 5,
Packoff nipple 1.103 forced expansion of cartridge that packoff nipple 1 is set at this time seals between packoff nipple 1 and 6 inner wall of oil pipe
Annular space, establish the reacting cycle channel that outer tube and sand washing inner tube are linked up, load fluid is along the oil pipe 6 on 1 top of packoff nipple
Ground is returned on chamber.Continue construction, sand washing inner tube declines with sand face in pit shaft and continued to decline, no under Gravitative Loads
Termination of pumping does not connect and changes single continuous recoil sand to design requirement sand washing position.
4, rotary drilling sand washing:
When causing sand washing to be hampered there are bulky grain hard sand lump, sand column cement plane, casing burr in pit shaft, outer tube is transferred
Enter in rotation outer cylinder 3 to rotation inner cylinder 4, outer tube connects top drive apparatus, drives oil pipe 6 and rotation outer cylinder 3 to rotate, rotates outer cylinder
3 bar shaped driving key 301 is overlapped with bar shaped transmission 401 side of block key of rotation inner cylinder 4, drives rotation inner cylinder 4 to rotate, thus band
Dynamic drill bit 7 rotates, the bulky grain hard sand lump and sand column cement plane, milling pit shaft burr being crushed in pit shaft, and takes with sand cleaning fluid
Take ground out of.Lasting decentralization and spun outer tube, constantly deepen sand washing depth, gradually rotate sand washing to design requirement sand washing position.
Claims (8)
1. a kind of sand washing specific purpose tool, including outer tube and sand washing inner tube, it is characterized in that: outer tube is by oil pipe (6), hanging pup joint (2)
It is successively threadedly coupled with rotation outer cylinder (3), sand washing inner tube is by packoff nipple (1), sand clean out pipe (5), rotation inner cylinder (4) and bores
Head (7) is successively threadedly coupled.
2. a kind of sand washing specific purpose tool according to claim 1, it is characterized in that: the central through hole of hanging pup joint (2) is cone
Shape seat.
3. a kind of sand washing specific purpose tool according to claim 1, it is characterized in that: rotation outer cylinder (3) is tubular structure, lower end
Mouth is guide shoe, and central through hole is equipped at least two longitudinal bar shaped driving keys (301).
4. a kind of sand washing specific purpose tool according to claim 3, it is characterized in that: rotation inner cylinder (4) is tubular structure, outside
Diameter is less than the internal diameter of longitudinal bar shaped driving key (301) of rotation outer cylinder (3), and outer wall is equipped at least two outer diameters and is greater than rotation
Longitudinal bar shaped of longitudinal bar shaped driving key (301) internal diameter of outer cylinder (3) is driven block key (401).
5. a kind of sand washing specific purpose tool according to claim 2, it is characterized in that: packoff nipple (1) by top connection (101),
Connecting short section (102), lower contact (104) are successively threadedly coupled, and the leather cup type packing element of opening upwards is set on connecting short section (102)
(103), connecting short section (102) is at least 2 grades combination connections, and the lower part of lower contact (104) is the conical seat with hanging pup joint (2)
Corresponding cone.
6. a kind of sand washing method, it is characterized in that: including group the supplying well, direct circulation sand washing, inverse circular sand washing adapter, rotation of sand-flushing pipe column
Creep into construction step.
7. sand washing method according to claim 6, it is characterized in that: being sequentially connected tripping in drill bit (7), rotation before construction
Turn inner cylinder (4), sand clean out pipe (5), packoff nipple (1), then is successively set with tripping in hanging pup joint (2), rotation outer cylinder (3), oil pipe
(6), up to sand face position in pit shaft, packoff nipple (1), sand clean out pipe (5), rotation inner cylinder (4) slip into outer tube in succession at this time
It is interior, complete the sand-flushing pipe column of outer tube, sand washing inner tube composition.
8. sand washing method according to claim 6, it is characterized in that: when there are bulky grain hard sand lumps, sand column glue in pit shaft
When junction, casing burr cause sand washing to be hampered, decentralization outer tube enters in rotation outer cylinder (3) to inner cylinder (4) are rotated, outer tube connection top
Drive apparatus drives oil pipe (6) and rotation outer cylinder (3) rotation, rotates in longitudinal bar shaped driving key (301) and rotation of outer cylinder (3)
Longitudinal bar shaped transmission block key (401) side of cylinder (4) is overlapped, and drives rotation inner cylinder (4) rotation, so that drill bit (7) is driven to rotate,
Bulky grain hard sand lump and sand column cement plane, milling pit shaft burr in broken pit shaft, and ground is carried out with sand cleaning fluid, continue
It transfers and spun outer tube, continuous intensification sand washing depth gradually rotates sand washing to design requirement sand washing position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610884425.2A CN106368630B (en) | 2016-10-10 | 2016-10-10 | A kind of sand washing method and specific purpose tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610884425.2A CN106368630B (en) | 2016-10-10 | 2016-10-10 | A kind of sand washing method and specific purpose tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106368630A CN106368630A (en) | 2017-02-01 |
| CN106368630B true CN106368630B (en) | 2019-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610884425.2A Active CN106368630B (en) | 2016-10-10 | 2016-10-10 | A kind of sand washing method and specific purpose tool |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218003B (en) * | 2017-07-18 | 2019-04-12 | 中国石油集团渤海钻探工程有限公司 | Coal bed gas continuous punching sandpipe string and its sand washing method |
| CN114198036B (en) * | 2021-11-29 | 2023-10-31 | 中海石油(中国)有限公司 | Flushing head, negative pressure sand flushing device with flushing head and use method of negative pressure sand flushing device |
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| RU2199646C1 (en) * | 2002-04-01 | 2003-02-27 | Общество с ограниченной ответственностью "ЛУКОЙЛ-Бурение-Пермь" | Process opening productive pool with differential pressure |
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| CN203394397U (en) * | 2013-08-07 | 2014-01-15 | 中国石油化工股份有限公司 | Underground multifunctional sand washing processor |
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| CN104790891A (en) * | 2015-04-09 | 2015-07-22 | 中国石油集团西部钻探工程有限公司 | Rotary sand washing head |
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2016
- 2016-10-10 CN CN201610884425.2A patent/CN106368630B/en active Active
Patent Citations (6)
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| RU2199646C1 (en) * | 2002-04-01 | 2003-02-27 | Общество с ограниченной ответственностью "ЛУКОЙЛ-Бурение-Пермь" | Process opening productive pool with differential pressure |
| CN202970550U (en) * | 2012-11-02 | 2013-06-05 | 中国石油化工股份有限公司 | Rotational-flow sand washing and deblocking pipe column for horizontal well |
| CN203022643U (en) * | 2012-11-03 | 2013-06-26 | 中国石油化工股份有限公司 | Loss oil layer double-tube continuous sand removal tubular column |
| CN203394397U (en) * | 2013-08-07 | 2014-01-15 | 中国石油化工股份有限公司 | Underground multifunctional sand washing processor |
| CN203685078U (en) * | 2013-11-29 | 2014-07-02 | 中国石油天然气股份有限公司 | Rotary drilling-type sand removal tip |
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| CN106368630A (en) | 2017-02-01 |
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