CN105863527A - Device capable of improving extending limit of coiled tubing - Google Patents
Device capable of improving extending limit of coiled tubing Download PDFInfo
- Publication number
- CN105863527A CN105863527A CN201610210053.5A CN201610210053A CN105863527A CN 105863527 A CN105863527 A CN 105863527A CN 201610210053 A CN201610210053 A CN 201610210053A CN 105863527 A CN105863527 A CN 105863527A
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- China
- Prior art keywords
- pipe nipple
- mandrel
- impeller
- coiled tubing
- base
- 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
- 210000002445 nipple Anatomy 0.000 claims abstract description 80
- 238000005553 drilling Methods 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011435 rock Substances 0.000 abstract 2
- 230000008901 benefit Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009466 transformation Effects 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
- E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a device capable of improving the extending limit of coiled tubing. The device is provided with a vibrating pipe nipple and a modulating pipe nipple. The upper end of the modulating pipe nipple is provided with an internal thread and connected with the lower end of the vibrating pipe nipple, and the lower end of the modulating pipe nipple is provided with an external thread and connected with a lower drilling assembly. Static friction between the coiled tubing and a well wall can be converted into sliding friction through device axial vibration, friction resistance between the coiled tubing and the well wall is lowered, and the extending limit of the coiled tubing can be improved. Rock debris can be promoted to move through device axial vibration, a rock debris bed is prevented, a borehole is smoothened, and downhole complexity is avoided; it is guaranteed that fluid always passes through the device through an impeller with a through hole, using of downhole motors and measuring tools cannot be affected, and meanwhile the damage effect of water attack is prevented. The device is simple in structure, the number of the components is small, and reliability of the device is guaranteed.
Description
Technical field
The invention belongs to Exploration of Oil And Gas technical field, particularly relate to one and can improve continuous oil
The device of pipe extension limit.
Background technology
Along with deepening continuously of Oil And Gas Exploration And Development, mid-later development phase is stepped in many oil fields,
Simultaneously petroleum resources type the most progressively by routine to unconventional transformation, oil-gas exploration and development field by
Gradually expand to low hole, hypotonic, small complex fault block, heavy crude reservoir and local residue oil reservoir and
The nontraditional reservoir such as coal bed gas, shale gas, compact sandstone gas.Coiled tubing due to its non junction,
Without reducing, bending is big, can remove continuously, dynamic seals, intensity is big, pressure-bearing is high and volume
The feature such as little, compared with conventional joint drill rod, simple to operate, construction safety, take up an area few, dirty
Dye is few, and required operating personnel is few.Therefore, coiled tubing drilling as a kind of emerging efficient,
Economic operation means, at well workover, horizontal well, extended reach well drilling well, the intensification of old well, development well
The operations such as branch's sidetracking have unrivaled advantage, it has also become oilfield stable production, volume increase, dynamic
With remaining reserves and an important technology of raising recovery ratio.
But, DRILLING WITH COILED TUBING currently also also exists some shortcomings.Due to coiled tubing
Size is less, and flexibility is relatively big, side such as various drilling parameters such as hydraulic parameters, DHA etc.
Face can be restricted, along with being continuously increased of coiled tubing development length in the wellbore, and oil continuously
Between pipe and the borehole wall, friction constantly increases, and inevitably there will be load transfer difficulty phenomenon,
The ultimate extension length of coiled tubing drilling is restricted, and tends not to reach the intended degree of depth,
Even can the down-hole accident such as Helical Buckling generation bit freezing time serious.Therefore, reduce coiled tubing with
Frictional resistance between pit shaft, the extension limit of raising coiled tubing has become needs asking of solution badly
Topic.
Summary of the invention
It is an object of the invention to provide a kind of device improving coiled tubing extension limit, purport
There is friction constantly increase between coiled tubing and the borehole wall solving DRILLING WITH COILED TUBING, go out
Existing load transfer difficulty, the ultimate extension length of coiled tubing drilling is restricted, it is impossible to reach
The problem of desired depth.
The present invention is achieved in that a kind of device improving coiled tubing extension limit, institute
State and can improve the device of coiled tubing extension limit and be provided with vibration pipe nipple and modulation pipe nipple；
Described modulation pipe nipple upper end is machined with internal thread and is connected with vibration pipe nipple lower end, described modulation
Pipe nipple lower end is machined with external screw thread and is connected with bottomhole assembly.
Further, described vibration pipe nipple farther includes: top connection, mandrel, dynamic sealing assembly,
Butterfly spring group, mandrel base, pipe nipple shell；
The offer runner that described mandrel hollow is drilling fluid, described mandrel upper end sets screw thread in being
Top connection, be connected with coiled tubing；Described mandrel lower end insert vibration pipe nipple enclosure and
Middle part is connected with pipe nipple shell upper end fit inside, and the lower outside of mandrel lower end is machined with shoulder,
The wall thickness of bottom is the 1/3-1/2 of middle part wall thickness, and the bottom of mandrel lower end is connected with mandrel base；
Butterfly spring group is placed in the gap of mandrel lower end lower outside and the formation of pipe nipple outer casing inner wall, leans on
The shoulder of bottom, mandrel lower end and mandrel base end face location；；One group of dynamic sealing assembly is positioned at short
Joint shell and the middle part of mandrel mandrel lower end, another set dynamic sealing assembly pipe nipple shell and mandrel
Between base, constitute piston with mandrel and mandrel base engagement.
Further, the bottom of described mandrel lower end is connected with mandrel base by screw thread.
Further, described pipe nipple shell lower end is processed as carrying externally threaded lower contact.
Further, described modulation pipe nipple farther includes: baffle, impeller, impeller base, electricity
Cable passage, nipple body；
Described nipple body is the cylinder of hollow, and modulation pipe nipple upper end is machined with internal thread and shakes
Dynamic pipe nipple lower end connects, and modulation pipe nipple lower end is machined with external screw thread and is connected with bottomhole assembly；
In the middle part of nipple body inner chamber, flow channel shape is eccentric cylinder, and the side that wall thickness is bigger is machined with cable
Passage；Impeller is arranged in impeller base, fixed with the location bearing fit in impeller base by impeller axle
Position；Impeller base is placed on the locating shoulder of nipple body inner chamber, by locating shoulder and baffle end
Face positions；, baffle is positioned at above impeller base, is connected with nipple body inner chamber by screw thread.
Further, described impeller farther includes: impeller axle, through hole and impeller blade；
Described through hole is arranged on impeller axle, and described impeller axle is provided with impeller blade.
Further, described impeller is arranged in impeller base by impeller axle.
The device of the improved coiled tubing extension limit that the present invention provides, compared with prior art,
Have the advantage that
(1) axial vibration of instrument can just static friction between coiled tubing and the borehole wall change
For sliding friction, reduce the frictional resistance between coiled tubing and the borehole wall, it is possible to increase coiled tubing
Extension limit.
(2) the axial vibrational energy of instrument promotes the migration of landwaste, prevents from being formed cutting bed, smooth
Well, prevents down-hole complicated.
(3) impeller with through hole ensures have fluid to pass through instrument all the time, will not move down-hole
Power drilling tool, the use of survey tool impact, and prevent the destruction of water attack simultaneously.
(4) present configuration is simple, and building block is few, it is ensured that the reliability of instrument.
Accompanying drawing explanation
Fig. 1 is the device knot of the improved coiled tubing extension limit that the embodiment of the present invention provides
Structure schematic diagram.
Fig. 2 is the vibration pipe nipple structural representation that the embodiment of the present invention provides.
Fig. 3 is the modulation pipe nipple structural representation that the embodiment of the present invention provides.
Fig. 4 is the blade wheel structure schematic diagram that the embodiment of the present invention provides.
In figure: 1, vibration pipe nipple；2, modulation pipe nipple；11, mandrel；12, pipe nipple shell；
13, mandrel base；14, top connection；15, dynamic sealing assembly；16, disk spring group；17、
Lower contact；21, nipple body；22, cable passage；23, impeller base；24, baffle；
25, impeller；251, impeller axle；252, through hole；253, blade.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with
Embodiment, is further elaborated to the present invention.Should be appreciated that tool described herein
Body embodiment only in order to explain the present invention, is not intended to limit the present invention.
The present invention is in order to reduce the frictional resistance between coiled tubing and pit shaft, it is proposed that Yi Zhongke
Improve the instrument of coiled tubing extension limit, solve the problem that coiled tubing drilling exists, protecting
On the basis of card hole quality, arrive and improve rate of penetration, improve coiled tubing extension limit
Purpose.
Below in conjunction with the accompanying drawings the structure of the present invention is explained in detail.
As Figure 1-Figure 4, the dress of the improved coiled tubing extension limit of the embodiment of the present invention
Put and specifically include that vibration pipe nipple 1, modulation pipe nipple 2, mandrel 11, pipe nipple shell 12, mandrel
Base 13, top connection 14, dynamic sealing assembly 15, disk spring group 16, lower contact 17,
Nipple body 21, cable passage 22, impeller base 23, baffle 24, impeller 25, impeller
Axle 251, through hole 252, blade 253.
The present invention is mainly made up of vibration pipe nipple 1 and modulation pipe nipple 2.Vibration pipe nipple 1 mainly by
Top connection 14, mandrel 11, dynamic sealing assembly 15, butterfly spring group 16, mandrel base 13,
Pipe nipple shell 12, lower contact 17 etc. form.The offer stream that mandrel 11 hollow is drilling fluid
Road, upper end sets the top connection 14 of screw thread, is connected with coiled tubing in being；Pipe nipple is inserted in lower end
Shell 12 is internal and middle part is connected with pipe nipple shell 12 end fit inside, mandrel 11 lower end
Lower outside is machined with shoulder, and the wall thickness of bottom is the 1/3-1/2 of middle part wall thickness, butterfly spring group
16 are placed in the space between bottom, mandrel 11 lower end and pipe nipple shell 12；Mandrel 11 lower end
Being connected with mandrel base 13 by screw thread, mandrel 11 and mandrel base 13 cooperatively form piston；
One group of dynamic sealing assembly 15 is positioned at pipe nipple shell 12 and mandrel 11 top, and another set is moved close
Between sealing assembly 15 pipe nipple shell 12 and mandrel base 13.Pipe nipple shell 12 lower end is processed as
Carry externally threaded lower contact 17.
Modulation pipe nipple 2 mainly by baffle 24, impeller 25, impeller base 23, cable passage 22,
Nipple body 21 grade forms.Nipple body 21 is the cylinder of hollow, and upper end is machined with interior spiral shell
Line is connected with vibration pipe nipple 1 lower end, and lower end is machined with external screw thread and is connected with bottomhole assembly；
In the middle part of nipple body 21 inner chamber, flow channel shape is eccentric cylinder, and the side that wall thickness strengthens is machined with
Cable passage 22, it is allowed in operation, various cables pass through；Impeller base 23 is placed in nipple body 21
On the locating shoulder of inner chamber, the impeller 25 with through hole 252 is arranged on by impeller axle 251
In impeller base 23, baffle 24 is positioned at above impeller base 23, is threadedly attached in pipe nipple
In the inner chamber bias runner of middle part.
Below in conjunction with the accompanying drawings the operation principle of the present invention is explained in detail.
In coiled tubing drilling operation process, drilling fluid is entered modulation by coiled tubing is internal
In the hollow duct of pipe nipple 2, under the effect of baffle 21, drilling fluid impact impeller 25
Impeller blade 253, impeller 25 rotates, thus changes the area of passage of drilling fluid.
When the area of passage of drilling fluid reduces, supercharging ripple can be produced on the top of modulation pipe nipple 2,
This supercharging ripple promotes the mandrel base 13 of vibration pipe nipple 1 to move upward, thus band moving mandrel 11
Move upward, and compress dish groups of springs 16.The mandrel 11 moved upward drives and is attached thereto
Coiled tubing move upward.When the area of passage of drilling fluid increases, can be at modulation pipe nipple
The top of 2 produces step-down ripple, and this step-down ripple is communicated up, the disk spring group now compressed
16 release energy, and promote the mandrel base 13 of vibration pipe nipple 1 to move downward, thus drive core
Axle 11 moves downward.The mandrel 11 moved downward drives the coiled tubing being attached thereto upwards to transport
Dynamic.Along with the rotation of impeller, the area of passage of drilling fluid periodically changes, therefore butterfly
Groups of springs 16 is periodically discharged by compression, the periodic up-down vibration of mandrel, thus drives
The Coiled Tubing being attached thereto vibrates along its axis, quiet between coiled tubing and the borehole wall is rubbed
Wiping is changed into sliding friction, reduces the frictional resistance between coiled tubing and the borehole wall, thus reaches to improve
The purpose of coiled tubing extension limit.Meanwhile, the axial vibration of instrument is beneficial to the fortune of borehole cuttings
Move, prevent from being formed cutting bed, simultaneously can smooth well, prevent bit freezing, improve wellbore trajectory
Controllability.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention,
All any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention,
Should be included within the scope of the present invention.
Claims (7)
1. the device that can improve coiled tubing extension limit, it is characterised in that described can
The device improving coiled tubing extension limit is provided with vibration pipe nipple and modulation pipe nipple；
Described modulation pipe nipple upper end is machined with internal thread and is connected with vibration pipe nipple lower end, described modulation
Pipe nipple lower end is machined with external screw thread and is connected with bottomhole assembly.
Can improve the device of coiled tubing extension limit the most as claimed in claim 1, it is special
Levying and be, described vibration pipe nipple farther includes: top connection, mandrel, dynamic sealing assembly, butterfly
Shape groups of springs, mandrel base, pipe nipple shell；
The offer runner that described mandrel hollow is drilling fluid, described mandrel upper end sets screw thread in being
Top connection, be connected with coiled tubing；Described mandrel lower end insert vibration pipe nipple enclosure and
Middle part is connected with pipe nipple shell upper end fit inside, and the lower outside of mandrel lower end is machined with shoulder,
The wall thickness of bottom is the 1/3-1/2 of middle part wall thickness, and the bottom of mandrel lower end is connected with mandrel base；
Butterfly spring group is placed in the gap of mandrel lower end lower outside and the formation of pipe nipple outer casing inner wall, leans on
The shoulder of bottom, mandrel lower end and mandrel base end face location；One group of dynamic sealing assembly is positioned at pipe nipple
The middle part of shell and mandrel mandrel lower end, at the bottom of another set dynamic sealing assembly pipe nipple shell and mandrel
Between Zuo, constitute piston with mandrel and mandrel base engagement.
Can improve the device of coiled tubing extension limit the most as claimed in claim 2, it is special
Levying and be, the bottom of described mandrel lower end is connected with mandrel base by screw thread.
Can improve the device of coiled tubing extension limit the most as claimed in claim 2, it is special
Levying and be, described pipe nipple shell lower end is processed as carrying externally threaded lower contact.
Can improve the device of coiled tubing extension limit the most as claimed in claim 1, it is special
Levying and be, described modulation pipe nipple farther includes: baffle, impeller, impeller base, cable are logical
Road, nipple body；
Described nipple body is the cylinder of hollow, and modulation pipe nipple upper end is machined with internal thread and shakes
Dynamic pipe nipple lower end connects, and modulation pipe nipple lower end is machined with external screw thread and is connected with bottomhole assembly；
In the middle part of nipple body inner chamber, flow channel shape is eccentric cylinder, and the side that wall thickness is bigger is machined with cable
Passage；Impeller is arranged in impeller base, fixed with the location bearing fit in impeller base by impeller axle
Position；Impeller base is placed on the locating shoulder of nipple body inner chamber, by locating shoulder and baffle end
Face positions；Baffle is positioned at above impeller base, is connected with nipple body inner chamber by screw thread.
Can improve the device of coiled tubing extension limit the most as claimed in claim 5, it is special
Levying and be, described impeller farther includes: impeller axle, through hole and impeller blade；
Described through hole is arranged on impeller axle, and described impeller axle is provided with impeller blade.
The device of coiled tubing extension limit, its feature can be improved the most as claimed in claim 5
Being, described impeller is arranged in impeller base by impeller axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610210053.5A CN105863527A (en) | 2016-04-06 | 2016-04-06 | Device capable of improving extending limit of coiled tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610210053.5A CN105863527A (en) | 2016-04-06 | 2016-04-06 | Device capable of improving extending limit of coiled tubing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105863527A true CN105863527A (en) | 2016-08-17 |
Family
ID=56627833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610210053.5A Pending CN105863527A (en) | 2016-04-06 | 2016-04-06 | Device capable of improving extending limit of coiled tubing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105863527A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522843A (en) * | 2016-11-18 | 2017-03-22 | 山东地瑞科森能源技术股份有限公司 | Drilling hydraulic driving oscillator and using method |
| CN110878679A (en) * | 2018-09-06 | 2020-03-13 | 中国石油化工股份有限公司 | Tail pipe string |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2327441A (en) * | 1997-07-17 | 1999-01-27 | Philip Head | Conduit and continuous coiled tubing system |
| US5947198A (en) * | 1996-04-23 | 1999-09-07 | Schlumberger Technology Corporation | Downhole tool |
| DE10258221A1 (en) * | 2002-12-13 | 2004-06-24 | Abb Research Ltd. | Production of borehole in underwater region involves initiating formation of borehole using drill string comprising pipes, and replacing section of drill string with component of same length |
| US20050189029A1 (en) * | 2004-02-27 | 2005-09-01 | Fiberspar Corporation | Fiber reinforced spoolable pipe |
| CN102206992A (en) * | 2011-04-01 | 2011-10-05 | 西南石油大学 | Crawler and crawling method for continuous oil pipe |
| CN102345442A (en) * | 2011-06-29 | 2012-02-08 | 西南石油大学 | Electric hole diameter expander |
-
2016
- 2016-04-06 CN CN201610210053.5A patent/CN105863527A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5947198A (en) * | 1996-04-23 | 1999-09-07 | Schlumberger Technology Corporation | Downhole tool |
| GB2327441A (en) * | 1997-07-17 | 1999-01-27 | Philip Head | Conduit and continuous coiled tubing system |
| DE10258221A1 (en) * | 2002-12-13 | 2004-06-24 | Abb Research Ltd. | Production of borehole in underwater region involves initiating formation of borehole using drill string comprising pipes, and replacing section of drill string with component of same length |
| US20050189029A1 (en) * | 2004-02-27 | 2005-09-01 | Fiberspar Corporation | Fiber reinforced spoolable pipe |
| CN102206992A (en) * | 2011-04-01 | 2011-10-05 | 西南石油大学 | Crawler and crawling method for continuous oil pipe |
| CN102345442A (en) * | 2011-06-29 | 2012-02-08 | 西南石油大学 | Electric hole diameter expander |
Non-Patent Citations (2)
| Title |
|---|
| 李博: "水力振荡器的研制与现场试验", 《石油钻探技术》 * |
| 杨浩: "基于脉冲激励的水平井减摩降阻工具研制", 《工程科技Ⅰ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522843A (en) * | 2016-11-18 | 2017-03-22 | 山东地瑞科森能源技术股份有限公司 | Drilling hydraulic driving oscillator and using method |
| CN106522843B (en) * | 2016-11-18 | 2019-02-19 | 山东地瑞科森能源技术股份有限公司 | A kind of drilling well hydro powered oscillator and application method |
| CN110878679A (en) * | 2018-09-06 | 2020-03-13 | 中国石油化工股份有限公司 | Tail pipe string |
| CN110878679B (en) * | 2018-09-06 | 2021-02-26 | 中国石油化工股份有限公司 | Tail pipe string |
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| PB01 | Publication | ||
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Application publication date: 20160817 |