CN104747094A - Automatic tie-back device for multilateral well borehole tie-back of multilateral well - Google Patents
Automatic tie-back device for multilateral well borehole tie-back of multilateral well Download PDFInfo
- Publication number
- CN104747094A CN104747094A CN201310743813.5A CN201310743813A CN104747094A CN 104747094 A CN104747094 A CN 104747094A CN 201310743813 A CN201310743813 A CN 201310743813A CN 104747094 A CN104747094 A CN 104747094A
- Authority
- CN
- China
- Prior art keywords
- tie
- back sleeve
- tieback
- spring
- automatic
- 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
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 2
- 238000005498 polishing Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008685 targeting 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
- E21B17/02—Couplings; joints
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 an automatic tie-back device for multilateral well borehole tie-back of a multilateral well. The automatic tie-back device comprises an outer introduction tie-back barrel, a spring seat, a spring, guide pins and an inner introduction tie-back barrel. The spring seat, the spring, the guide pins and the inner instruction tie-back barrel are positioned in the outer introduction tie-back barrel. The outer introduction tie-back barrel sleeves the inner introduction tie-back barrel. Guide grooves are formed in the outer wall of the inner introduction tie-back barrel. The inner introduction tie-back barrel is connected with the outer introduction tie-back barrel through the guide pins to be limited and guided. Guide chamfers of the inner introduction tie-back barrel and the outer introduction tie-back barrel are assembled oppositely. The spring and the spring seat are assembled from the upper end of the outer introduction tie-back barrel. The spring seat is in threaded connection with the outer introduction tie-back barrel. The spring is fixed between the inner introduction tie-back barrel and the spring seat. The automatic tie-back device has the advantages that trip-out is not needed in case of blocking during multilateral well borehole tie-back, a preset blocking value is adopted for automatic changeover and guide, non-production time is saved, and well completion efficiency is improved; the device is simple in structure, simple and convenient to mount, use and operate, safe and reliable.
Description
Technical field
The present invention relates to petroleum gas and bore completion practice device field, is a kind of automatic tieback assembly for Multilateral Wells completion practice tieback branch well hole in particular.
Background technology
Multi-lateral well technology is increasingly mature in recent years, becomes a kind of important advanced technology of oil-gas field development, obtains applying more and more widely.Multilateral well gets out two or more well exactly in a main borehole, and main borehole can be straight well, inclined shaft or horizontal well.High-level Multilateral Wells completion needs to reach and can provide fluid power packing and mechanical support at window tieback place, utilizes the packing of well connecting assembly to reach pressure globality, can realize entering again of main borehole and branch well hole.Carry out tieback carrying out window position during current Pyatyi Multilateral Wells completion, need to utilize sealing plug tieback to enter polishing seat in branch well hole, carry out fluid power packing and realize being communicated with main split's well.According to the classification (TAML hierarchy system) of international Multilateral Wells completion system, master, the branch well hole connector at tieback place, current Pyatyi branch well window position are two body plug-in mounting structures, adopt rubber weather strip, expanded rubber or memorial alloy to connect, make it can not rotate after plug-in mounting.There is position of windowing in drilling process to go out hatch section and occur that the placed in the middle or well of tail pipe expands, will produce when utilizing the sealing plug tieback of branch well hole connector bottom to enter the polishing seat reserved on the tail pipe top in branch well hole like this, conventional guide shoe importing polishing seat cannot be utilized to carry out the tieback of branch well hole, therefore cannot connect main, branch well hole go out window well section.
Summary of the invention
The object of the invention is in order to solve existing tieback assembly exist tail pipe placed in the middle or well expands time, current existing conventional tieback assembly cannot be utilized to import the technical barrier that polishing seat carries out the tieback operation of branch well hole, a kind of automatic tieback assembly for Multilateral Wells tieback branch well hole that can realize automatically introducing the polishing seat reserved on tail pipe top in branch well hole is in such cases provided.
The present invention is the technical scheme solved the problems of the technologies described above:
A kind of automatic tieback assembly for Multilateral Wells tieback branch well hole, introduce the interior linking springs seat (2) of tie-back sleeve (1) outside, spring base (2) overcoat has spring (3), introduce outside in tie-back sleeve (1) external port in inserting and introduce tie-back sleeve (5), the inner face of interior introducing tie-back sleeve (5) docks with spring (3), interior introducing tie-back sleeve (5) outer wall offers the gathering sill paralleled to the axis, outer introducing tie-back sleeve (1) forms spacing and guiding cooperation by the gathering sill of guide pin (4) and interior introducing tie-back sleeve (5), interior introducing tie-back sleeve (5) and outer introducing tie-back sleeve (1) external port are processed with 45 ° of guiding chamferings, the guiding chamfering of interior introducing tie-back sleeve (5) and outer introducing tie-back sleeve (1) is oppositely assembled.
Such scheme also comprises:
The barrel outer face of interior introducing tie-back sleeve (5) and outer introducing tie-back sleeve (1) is processed with 45 ° of chamferings.
The outer gathering sill of interior introducing tie-back sleeve (5) and guide pin (4) are all 2-5, and spring base (2) forms grafting with interior introducing tie-back sleeve (5) and coordinates.
Spring base (2) and outer introducing tie-back sleeve (1) are threaded connection.
Advantage of the present invention is when the tieback operation carrying out Multilateral Wells branch well hole, being hampered cannot tieback when entering tail pipe, conventional guide shoe opening direction is reset without the need to pulling out of hole, the default value conversion guiding automatically that is hampered of this device is adopted to introduce, save nonproductive time, improve completion efficiency, this apparatus structure is simple, install and use easy and simple to handle, safe and reliable.
Accompanying drawing explanation
Fig. 1 to be hampered down-hole situation schematic diagram for using taper guide shoe.
Fig. 2 is that the full chamfering guide shoe of use 45 ° is hampered down-hole situation schematic diagram.
Fig. 3 is for using down-hole of the present invention situation schematic diagram.
Fig. 4 is structural representation of the present invention.
In figure: introduce tie-back sleeve outside 1,2 spring bases, 3 springs, 4 guide pins, introduce tie-back sleeve in 5.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the invention will be further described.
With reference to accompanying drawing 4, a kind of automatic tieback assembly for Multilateral Wells tieback branch well hole, comprises outer introducing tie-back sleeve 1, spring base 2, spring 3, guide pin 4 and interior introducing tie-back sleeve 5.Spring base 2, spring 3, guide pin 4 and interior introducing tie-back sleeve 5 are introduced in tie-back sleeve 1 all outside, interior introducing tie-back sleeve 5 is sleeved in outer introducing tie-back sleeve 1, it is circumferentially with gathering sill, interior introducing tie-back sleeve 5 is connected with outer introducing tie-back sleeve 1 by guide pin 4, and internal introducing tie-back sleeve 5 is spacing and lead.Interior introducing tie-back sleeve 5 and outer introducing tie-back sleeve 1 front end are processed with 45 ° of full chamferings, do not stay planar end surface, prevent planar end surface and be hampered at stepped locations, and interior introducing tie-back sleeve 5 and outer introducing tie-back sleeve 1 chamfering that leads oppositely is assembled.Spring 3 and spring base 2 are loaded by outer introducing tie-back sleeve 1 upper end, and spring base 2 and outer introducing tie-back sleeve 1 are threaded connection, and spring 3 is fixed between interior introducing tie-back sleeve 5 and spring base 2.
With reference to accompanying drawing 3, the working mechanism of such scheme is: when carrying out the tieback operation of Pyatyi Multilateral Wells branch well hole, automatic for branch well hole tieback assembly is threaded connection in tie back liner sealing plug lower end, when entering into tail pipe top polishing seat horn mouth, be hampered cannot import time, by increasing the pressure of the drill, the pressure of the drill reaches presets the interior introducing tie-back sleeve 5 withdrawal value that is hampered, interior introducing tie-back sleeve 5 presets withdrawal value relevant with length L (as Fig. 3), interior introducing tie-back sleeve 5 is made outwards to introduce contraction in tie-back sleeve 1 by guide pin 4 along gathering sill, spring 3 compresses, until interior introducing tie-back sleeve 5 enters outer introducing tie-back sleeve 1 completely, because interior introducing tie-back sleeve 5 and outer introducing tie-back sleeve 1 chamfering that leads oppositely is assembled, now outer tie-back sleeve 1 targeting port of introducing play the guiding role, automatically instrument is made to enter the polishing seat on tail pipe string top, guiding has entered rear interior introducing tie-back sleeve 5 automatic spring under spring force.
Claims (4)
1. the automatic tieback assembly for Multilateral Wells tieback branch well hole, it is characterized in that: introduce the interior linking springs seat (2) of tie-back sleeve (1) outside, spring base (2) overcoat has spring (3), introduce outside in tie-back sleeve (1) external port in inserting and introduce tie-back sleeve (5), the inner face of interior introducing tie-back sleeve (5) docks with spring (3), interior introducing tie-back sleeve (5) outer wall offers the gathering sill paralleled to the axis, outer introducing tie-back sleeve (1) forms spacing and guiding cooperation by the gathering sill of guide pin (4) and interior introducing tie-back sleeve (5), interior introducing tie-back sleeve (5) and outer introducing tie-back sleeve (1) external port are processed with 45 ° of guiding chamferings, the guiding chamfering of interior introducing tie-back sleeve (5) and outer introducing tie-back sleeve (1) is oppositely assembled.
2. the automatic tieback assembly for Multilateral Wells tieback branch well hole according to claim 1, is characterized in that: the barrel outer face of interior introducing tie-back sleeve (5) and outer introducing tie-back sleeve (1) is processed with 45 ° of chamferings.
3. the automatic tieback assembly for Multilateral Wells tieback branch well hole according to claim 1 and 2, it is characterized in that: the outer gathering sill of interior introducing tie-back sleeve (5) and guide pin (4) are all 2-5, and spring base (2) forms grafting with interior introducing tie-back sleeve (5) and coordinates.
4. the automatic tieback assembly for Multilateral Wells tieback branch well hole according to claim 3, is characterized in that: spring base (2) and outer introducing tie-back sleeve (1) are threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743813.5A CN104747094A (en) | 2013-12-31 | 2013-12-31 | Automatic tie-back device for multilateral well borehole tie-back of multilateral well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743813.5A CN104747094A (en) | 2013-12-31 | 2013-12-31 | Automatic tie-back device for multilateral well borehole tie-back of multilateral well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104747094A true CN104747094A (en) | 2015-07-01 |
Family
ID=53587273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310743813.5A Pending CN104747094A (en) | 2013-12-31 | 2013-12-31 | Automatic tie-back device for multilateral well borehole tie-back of multilateral well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104747094A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5411082A (en) * | 1994-01-26 | 1995-05-02 | Baker Hughes Incorporated | Scoophead running tool |
| CN2675843Y (en) * | 2003-10-24 | 2005-02-02 | 四川石油管理局川东钻探公司 | Centralizing type adjustable tie-back sleeve |
| CN201284627Y (en) * | 2008-08-26 | 2009-08-05 | 中国石化集团胜利石油管理局钻井工艺研究院 | Branching borehole connection device capable of expanding and sealing in case of oil or water |
| CN102913131A (en) * | 2012-08-14 | 2013-02-06 | 中国石油大学(华东) | Dynamic point-the-bit rotary steering drilling tool |
| CN203756060U (en) * | 2013-12-31 | 2014-08-06 | 中国石油化工集团公司 | Automatic back connecting device for back connecting of multilateral well hole by multilateral well |
-
2013
- 2013-12-31 CN CN201310743813.5A patent/CN104747094A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5411082A (en) * | 1994-01-26 | 1995-05-02 | Baker Hughes Incorporated | Scoophead running tool |
| CN2675843Y (en) * | 2003-10-24 | 2005-02-02 | 四川石油管理局川东钻探公司 | Centralizing type adjustable tie-back sleeve |
| CN201284627Y (en) * | 2008-08-26 | 2009-08-05 | 中国石化集团胜利石油管理局钻井工艺研究院 | Branching borehole connection device capable of expanding and sealing in case of oil or water |
| CN102913131A (en) * | 2012-08-14 | 2013-02-06 | 中国石油大学(华东) | Dynamic point-the-bit rotary steering drilling tool |
| CN203756060U (en) * | 2013-12-31 | 2014-08-06 | 中国石油化工集团公司 | Automatic back connecting device for back connecting of multilateral well hole by multilateral well |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150701 |
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| WD01 | Invention patent application deemed withdrawn after publication |