CN107869322A - Drag for sand instrument in underground - Google Patents
Drag for sand instrument in underground Download PDFInfo
- Publication number
- CN107869322A CN107869322A CN201610851611.6A CN201610851611A CN107869322A CN 107869322 A CN107869322 A CN 107869322A CN 201610851611 A CN201610851611 A CN 201610851611A CN 107869322 A CN107869322 A CN 107869322A
- Authority
- CN
- China
- Prior art keywords
- sand
- spring
- tube
- dragged
- instrument
- 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.)
- Pending
Links
- 239000004576 sand Substances 0.000 title claims abstract description 81
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000003860 storage Methods 0.000 claims abstract description 20
- 241000251133 Sphyrna tiburo Species 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000012530 fluid Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005406 washing Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing 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
- E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses underground to drag for sand instrument, including be sequentially connected from top to bottom upper check valve, plunger pump, storage sand tube, lower check valve, shovel head.The plunger pump includes outer barrel and is arranged on the inner plunger of outer barrel, and the inner plunger includes liquid sucking tube, connector, the piston being sequentially connected from top to bottom, and the outer barrel includes the positioning sleeve and outer tube being sequentially connected from top to bottom.The piston outer wall is cased with sealing ring, is sealed in outer tube wall, and the piston base connection is used for adjusting the elastic plug of sealing ring.The tool construction is simple, and sand instrument is dragged for from formation protection angle in the underground, using brand-new mentality of designing; without pump truck and other auxiliary equipments; only need up and down tubing string to can be achieved to pull out sand setting in well, avoid injury of the working fluid to stratum, can effective formation protection.It is safe meanwhile the tool operation is simple, process, the various complex hole conditions such as straight well, horizontal well, sidetracked hole are applicable to, cost is low, high efficiency.
Description
Technical field
The present invention relates to oil field flow string, sand instrument is dragged in specifically underground.
Background technology
Oil field development enters the middle and later periods, and some blocks are made by the irrational production of long-term injecting water or gas injecting mining and oil well
The influence of degree, reservoir skeleton are destroyed and cause sand production in oil, and the stratum after shaking out is in state in debt, continuous enlarged meeting in debt
Cause oil reservoir to cave in, shake out and be further exacerbated by.Sand production amount reach sand bury production layer when, will result in the oil well underproduction or stop
Production.Processing for sand production, the existing conventional sand removal method in oil field mainly have two kinds of hydraulic sand washing and mechanical sand-picking.Waterpower
Sand washing method has a characteristics of sand washing amount is big, bottom-hole cleaning is complete, technique is simple, but construction cost is higher, works as strata pressure
When coefficient is low, sand cleaning fluid can largely leak into stratum, polluted reservoir；When well is very deep and strata pressure is relatively low, sand cleaning fluid is difficult to return
To ground, the failure of hydraulic sand washing method, easily there is sand card tubing string；When stratum is water-sensitive strata, hydraulic sand washing method easily leaks into ground
Layer, flushing fluid is different degrees of to be damaged to stratum, is unfavorable for lower step oil mining.And conventional mechanical methods drag for sand and are although not required to
External sand cleaning fluid, will not polluted reservoir, but have that once to drag for sand amount few, during well depth the trip time grow, it is low to drag for sand efficiency, no
The shortcomings of economic.
The content of the invention
It is an object of the invention to provide underground to drag for sand instrument, and the tool construction is simple, and sand instrument is dragged for from protection in the underground
Oil reservoir angle is set out, using brand-new mentality of designing, without pump truck and other auxiliary equipments, it is only necessary to which up and down tubing string can be real
Now sand setting in well is pulled out, avoids injury of the working fluid to stratum, can effective formation protection.Meanwhile the tool operation it is simple,
Process, it is safe, the various complex hole conditions such as straight well, horizontal well, sidetracked hole are applicable to, cost is low, high efficiency.
In order to reach above-mentioned purpose, present invention employs following technical scheme, sand instrument is dragged in underground, including from top to bottom according to
The upper check valve of secondary connection, plunger pump, storage sand tube, lower check valve, shovel head.
The plunger pump includes outer barrel and is arranged on the inner plunger of outer barrel, the inner plunger include from top to bottom according to
Liquid sucking tube, connector, the piston of secondary connection, the outer barrel include the positioning sleeve and outer tube being sequentially connected from top to bottom.
The piston outer wall is cased with sealing ring, is sealed in outer tube wall, and the piston base connection is used for adjusting sealing ring
Elastic plug.
There is annular space between the outer tube and liquid sucking tube, elongated slot is opened up on the liquid sucking tube, the positioning sleeve inwall is set
Chuck, chuck are stretched into elongated slot and run in elongated slot, and the positioning sleeve opens up the radial hole for connecting above-mentioned annular space.
The outer tube lower end passes sequentially through adapter sleeve, box cupling connection storage sand tube.
The upper check valve includes upper press ring, upper spring housing, spring, change buckle joint, steel ball, and the change buckle joint lower end connects
The liquid sucking tube of plunger pump, the connection top connection of variable buckle upper end of joint are connect, the upper spring housing is located at top connection inner chamber, upper spring housing bottom
Portion's sealing is fixed on variable buckle upper end of joint, and upper spring housing top forms annular space, the upper spring between the two with top connection
Set and top connection circumferential wall open up radial hole, and the steel ball is seated in inner port under spring housing, and the spring is placed in bullet
In spring set, the upper press ring is connected to the upper end of spring housing and spring.
The lower check valve includes lower pressure ring, lower spring set, spring, and the shovel head upper end connection lower spring covers and overcoat,
Outer set upper side connects storage sand tube, and the lower spring set is located at overcoat inner chamber, and the spring is placed in lower spring set, the lower pressure ring
The upper end of spring and lower spring set is connected to, the steel ball is seated at the upper port of shovel head.
Compared to prior art, the invention has the advantages that：
1st, tool design uses the pump shaft relative motion principle of pumping up and down, is produced in instrument inside and outside and reaches as high as 5-
8MPa pressure difference, so as to realize that pit shaft sand grains is pumped into instrument, and it is stored in storage sand tube, it is logical after storage sand tube has been expired
Cross working rig and act pit shaft, sand is discharged, reaches pit shaft sand removal purpose, single bailed sand pillar height degree 500m；
2nd, instrument upper and lower ends devise the check valve of two relative switches, and when tubing string is up, bottom check valve is opened, on
Portion's closed check valve, pit shaft sand liquid is by quick pumping instrument；When tubing string is descending, bottom closed check valve, upper one-way valve is beaten
Open, liquid is slowly discharged from upper tool part check valve, and sand is stayed in storage sand tube.The structure ensures that pit shaft sand grains is smooth from bottom
Instrument inner cylinder is sunk, can't be discharged from top and cause sand to bury, sand effect is dragged in guarantee；
3rd, be designed with sunk key structure between instrument inner plunger and outer barrel, ensure between tool component can relative motion, again
Mutually will not deviate to cause instrument to damage, at the same ensure when tubing string is rotated forward instrument will not relative motion, being capable of passing power
It is safe to shaft bottom, suitable for complex hole conditions such as horizontal well, high angle hole and sidetracked holes；
4th, tool bottom is designed to scoop structure, realize when visiting sand face will not sand bury, while can effectively smash sand face to pieces, make sand
Face is soft, so that shaft bottom sand grains easily enters sand setting tubing string with current, sand effect is dragged in raising.
Brief description of the drawings
Fig. 1 is the structural representation that sand instrument is dragged in underground of the present invention.
In figure：1- top connections；2- upper press rings；The upper spring housings of 3-；4th, 20- springs；5th, 21- steel balls；6- becomes buckle joint；7- is drawn
Liquid pipe；8- positioning sleeves；9- outer tubes；10- connectors；11- sealing rings；12- pistons；13- plugs；14- adapter sleeves；15- box cuplings；
16- storage sand tubes；17- overcoats；18- lower spring sets；Pressure ring under 19-；22- shovel heads.
Embodiment
Detailed description for the present invention and technology contents, coordinate brief description of the drawings it is as follows, but accompanying drawing only provide reference with
Purposes of discussion, not it is used for being any limitation as the present invention.
According to Fig. 1, sand instrument is dragged in underground, including be sequentially connected from top to bottom upper check valve, plunger pump, storage sand tube, under
Check valve, shovel head.
The plunger pump includes outer barrel and is arranged on the inner plunger of outer barrel, the inner plunger include from top to bottom according to
Liquid sucking tube 7, connector 10, the piston 12 of secondary connection, the outer barrel include the positioning sleeve 8 and outer tube 9 being sequentially connected from top to bottom.
The piston outer wall is cased with sealing ring 11, is sealed in outer tube wall, and the piston base connection is elastic for adjusting sealing ring
Plug 13.There is annular space between the outer tube and liquid sucking tube, elongated slot is opened up on the liquid sucking tube, the positioning sleeve inwall sets card
Platform, chuck are stretched into elongated slot and run in elongated slot, and the positioning sleeve opens up the radial hole for connecting above-mentioned annular space.The outer tube lower end
Pass sequentially through adapter sleeve 14, box cupling 15 connects storage sand tube 16.
The upper check valve includes upper press ring 2, upper spring housing 3, spring 4, change buckle joint 6, steel ball 5, the change buckle joint 6
Lower end connects the liquid sucking tube 7 of plunger pump, becomes the connection top connection 1 of the upper end of buckle joint 6, and the upper spring housing is located at top connection inner chamber,
Upper spring housing sealed bottom, which is fixed on, becomes the upper end of buckle joint 6, and upper spring housing top forms annular space between the two with top connection,
The upper spring housing and top connection circumferential wall open up radial hole, and the steel ball 5 is seated in 3 times inner ports of spring housing, described
Spring 4 is placed in spring housing 3, and the upper press ring 2 is connected to the upper end of spring housing and spring.
The lower check valve includes lower pressure ring 19, lower spring set 18, spring 20, and the upper end of shovel head 22 connects lower spring set
18 and overcoat 17, the upper end of overcoat 17 connection storage sand tube 16, the lower spring set 18 is located at the inner chamber of overcoat 17, and the spring 20 is placed in
In lower spring set 18, the lower pressure ring 19 is connected to the upper end of spring and lower spring set, and the steel ball 21 is seated in shovel head 22
At upper port.
Screw thread, lower end and the change screwed connection of buckle joint 6 are left in the upper end of top connection 1, and upper press ring 2 and the screw thread of upper spring housing 3 connect
Connect, spring 4 is placed on the interior intracavitary that upper press ring 2 and upper spring housing 3 form, and steel ball 5 is placed on 3 times inner ports of spring housing, pushes up
Portion is connected by the controller perturbation of spring 4, upper spring housing 3 and change buckle joint 6.Upper spring housing 3 and the circumference of top connection 1 are provided with hole slot, and two
Person's fluid communication.Become the lower end of buckle joint 6 and the upper end screwed connection of liquid sucking tube 7, liquid sucking tube 7 pass through connector 10 and the screw thread of piston 12
Connect, sealing ring 11 is installed on piston 12, and the cooperation of the inner chamber of outer tube 9 is sealed, plug 13 can control sealing ring 11 elastic.
Positioning sleeve 8, the screwed connection of outer tube 9, and on liquid sucking tube 7, wide 8-10mm, deep 5-6mm length are offered on liquid sucking tube 7
Groove, being coordinated by the operating key on positioning sleeve 8 to be stretched.Outer tube 9, adapter sleeve 14, box cupling 15, storage sand tube 16 are from top to bottom
Equal screwed connection, storage sand tube 16 are usually conventional oil pipe, and its length is designed as 50-200m according to hole condition, under storage sand tube 16
End and the screwed connection of overcoat 17, lower spring set 18 and shovel head 22 are welded, and steel ball 21 is placed on lower spring set 18, shovel head 22 forms
In inner chamber, top is elastic come control pressure size by the screw thread of lower pressure ring 19 and lower spring set 18 by spring 20.In shovel head 22
End and the lower end screwed connection of overcoat 17, sand particles raising in bottom is loosened when the lower end of shovel head 22 is designed as spade to work and is drawn
Efficiency.
During work, instrument is liquid sucking tube 7, connector 10, sealing ring 11, piston 12, stifled by the quick pumping of top oil pipe
The outer barrel that inner plunger relative positioning set 8, the outer tube 9 of first 13 composition form moves back and forth.When inner plunger is up, outer barrel and
Lower end tubing string produces Negative Pressure Difference, and the sand liquid mixture in sleeve pipe will be pushed open steel ball 21 by shovel head 22 and enter tubing string inner chamber, and
Full of storage sand tube 16；When interior tubing string is descending, in the presence of fluid power, steel ball 21 is closed, and steel ball 5 is opened, and liquid connects from above
Eyelet discharge on first 1, sand are preserved in storage sand tube 16.After multiple pumping, risen out after tubing string storage sand tube 16 is full of sand
And sand is disposed to ground, then the tripping in instrument until pit shaft sand has obtained thorough removing, that is, completes and drags for sand and apply again
Work.
Sand instrument is dragged for from formation protection angle in the underground, using brand-new mentality of designing, without pump truck and other auxiliary
Help equipment, it is only necessary to which up and down tubing string can be achieved to pull out sand setting in well, avoid injury of the working fluid to stratum, can be effective
Formation protection.It is safe meanwhile the tool operation is simple, process, it is each to be applicable to straight well, horizontal well, sidetracked hole etc.
Kind complex hole condition, cost is low, high efficiency, has preferable application prospect.
Presently preferred embodiments of the present invention is the foregoing is only, is not used to limit the scope of the claims of the present invention, other are with this
The equivalence changes of the patent spirit of invention, it all should all belong to the scope of the claims of the present invention.
Claims (7)
1. sand instrument is dragged in underground, it is characterised in that including be sequentially connected from top to bottom upper check valve, plunger pump, storage sand tube, under
Check valve, shovel head.
2. sand instrument is dragged in underground according to claim 1, it is characterised in that the plunger pump includes outer barrel and is arranged on
The inner plunger of outer barrel, the inner plunger include liquid sucking tube, connector, the piston being sequentially connected from top to bottom, the outer barrel
Including the positioning sleeve and outer tube being sequentially connected from top to bottom.
3. sand instrument is dragged in underground according to claim 2, it is characterised in that the piston outer wall is cased with sealing ring, sealing
In outer tube wall, the piston base connection is used for adjusting the elastic plug of sealing ring.
4. sand instrument is dragged in underground according to claim 2, it is characterised in that has ring between the outer tube and liquid sucking tube
Sky, elongated slot is opened up on the liquid sucking tube, the positioning sleeve inwall sets chuck, and chuck is stretched into elongated slot and run in elongated slot, institute
State positioning sleeve and open up the radial hole for connecting above-mentioned annular space.
5. sand instrument is dragged in underground according to claim 2, it is characterised in that the outer tube lower end pass sequentially through adapter sleeve,
Box cupling connects storage sand tube.
6. sand instrument is dragged in underground according to claim 1, it is characterised in that the upper check valve includes upper press ring, upper bullet
Spring set, spring, become buckle joint, steel ball, the liquid sucking tube for becoming buckle joint lower end connection plunger pump, in the connection of variable buckle upper end of joint
Joint, the upper spring housing are located at top connection inner chamber, and upper spring housing sealed bottom is fixed on variable buckle upper end of joint, and upper spring
Set top forms annular space between the two with top connection, and the upper spring housing and top connection circumferential wall open up radial hole, the steel
Ball is seated in inner port under spring housing, and the spring is placed in spring housing, and the upper press ring is connected to spring housing and bullet
The upper end of spring.
7. sand instrument is dragged in underground according to claim 1, it is characterised in that the lower check valve includes lower pressure ring, lower bullet
Spring set, spring, the shovel head upper end connection lower spring set and overcoat, outer set upper side connect storage sand tube, and the lower spring set is located at
Overcoat inner chamber, the spring are placed in lower spring set, and the lower pressure ring is connected to the upper end of spring and lower spring set, the steel ball
It is seated at the upper port of shovel head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610851611.6A CN107869322A (en) | 2016-09-26 | 2016-09-26 | Drag for sand instrument in underground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610851611.6A CN107869322A (en) | 2016-09-26 | 2016-09-26 | Drag for sand instrument in underground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107869322A true CN107869322A (en) | 2018-04-03 |
Family
ID=61751930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610851611.6A Pending CN107869322A (en) | 2016-09-26 | 2016-09-26 | Drag for sand instrument in underground |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107869322A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505550A (en) * | 2018-10-29 | 2019-03-22 | 东营市鑫聚合石油科技有限责任公司 | A kind of two-tube annular space sand setting sand-bailing equipment and technique |
| CN113047790A (en) * | 2021-04-02 | 2021-06-29 | 中国石油天然气集团有限公司 | Pigging sand removal tool and method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6257850B1 (en) * | 1997-03-21 | 2001-07-10 | Kenneth S. Conn | Piston and seals for a reciprocating pump |
| CN2479202Y (en) * | 2001-04-29 | 2002-02-27 | 中国石油天然气股份有限公司 | Super-long stroke downhole bailing device |
| CN1386954A (en) * | 2002-06-14 | 2002-12-25 | 辽河石油勘探局 | Vacum tube-type bailing process and its borehole tool |
| CN201027513Y (en) * | 2007-05-08 | 2008-02-27 | 新疆石油管理局采油工艺研究院 | Spraying bailing bucket |
| CN101250991A (en) * | 2008-04-11 | 2008-08-27 | 安东石油技术（集团）有限公司 | Oil well horizontal sand-pumping device as well as sand-pumping method thereof |
| CN101250990A (en) * | 2008-04-11 | 2008-08-27 | 安东石油技术（集团）有限公司 | Oil well horizontal sand-pumping device as well as sand-pumping method thereof |
| CN201180521Y (en) * | 2008-04-11 | 2009-01-14 | 安东石油技术（集团）有限公司 | System used for horizontal well sand pumping |
| CN201747329U (en) * | 2010-08-06 | 2011-02-16 | 姜自华 | Sand cleaning tool of large-inclination and large-well diameter absorption well |
| CN203308414U (en) * | 2013-06-18 | 2013-11-27 | 李永祥 | Sand removal pipe column of oil-water well |
| CN206144502U (en) * | 2016-09-26 | 2017-05-03 | 中国石油化工股份有限公司 | Drag for sand instrument in pit |
-
2016
- 2016-09-26 CN CN201610851611.6A patent/CN107869322A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6257850B1 (en) * | 1997-03-21 | 2001-07-10 | Kenneth S. Conn | Piston and seals for a reciprocating pump |
| CN2479202Y (en) * | 2001-04-29 | 2002-02-27 | 中国石油天然气股份有限公司 | Super-long stroke downhole bailing device |
| CN1386954A (en) * | 2002-06-14 | 2002-12-25 | 辽河石油勘探局 | Vacum tube-type bailing process and its borehole tool |
| CN201027513Y (en) * | 2007-05-08 | 2008-02-27 | 新疆石油管理局采油工艺研究院 | Spraying bailing bucket |
| CN101250991A (en) * | 2008-04-11 | 2008-08-27 | 安东石油技术（集团）有限公司 | Oil well horizontal sand-pumping device as well as sand-pumping method thereof |
| CN101250990A (en) * | 2008-04-11 | 2008-08-27 | 安东石油技术（集团）有限公司 | Oil well horizontal sand-pumping device as well as sand-pumping method thereof |
| CN201180521Y (en) * | 2008-04-11 | 2009-01-14 | 安东石油技术（集团）有限公司 | System used for horizontal well sand pumping |
| CN201747329U (en) * | 2010-08-06 | 2011-02-16 | 姜自华 | Sand cleaning tool of large-inclination and large-well diameter absorption well |
| CN203308414U (en) * | 2013-06-18 | 2013-11-27 | 李永祥 | Sand removal pipe column of oil-water well |
| CN206144502U (en) * | 2016-09-26 | 2017-05-03 | 中国石油化工股份有限公司 | Drag for sand instrument in pit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505550A (en) * | 2018-10-29 | 2019-03-22 | 东营市鑫聚合石油科技有限责任公司 | A kind of two-tube annular space sand setting sand-bailing equipment and technique |
| CN113047790A (en) * | 2021-04-02 | 2021-06-29 | 中国石油天然气集团有限公司 | Pigging sand removal tool and method |
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| PB01 | Publication | ||
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Application publication date: 20180403 |