CN105604508B - Liner hanger - Google Patents
Liner hanger Download PDFInfo
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- CN105604508B CN105604508B CN201510956001.8A CN201510956001A CN105604508B CN 105604508 B CN105604508 B CN 105604508B CN 201510956001 A CN201510956001 A CN 201510956001A CN 105604508 B CN105604508 B CN 105604508B
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- expansion
- tube
- ring cavity
- close
- expansion tube
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- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- 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)
- Earth Drilling (AREA)
- Pens And Brushes (AREA)
Abstract
The application provides a liner hanger, includes: an expansion tube having a hanging portion; the central tube penetrates through the expansion tube, a first annular cavity is formed between the central tube and the expansion tube, and a through hole is formed in the side wall of the central tube; the expansion cone seat is arranged in the first annular cavity and provided with a bulge; the expansion cone is sleeved on the expansion cone seat, and the end part of the expansion cone is fixedly propped against the upper end of the bulge; the end part of the locking claw is fixedly propped against the lower end of the bulge, a second annular cavity is formed between the locking claw and the central pipe, and the second annular cavity is communicated with the central pipe through a through hole; the ball valve bottom plug is provided with a fluid channel and a valve seat, the valve seat is positioned in the fluid channel, the end part of a central pipe extends into the fluid channel and is connected with the inner wall of the fluid channel, and the outer side wall of the ball valve bottom plug is connected with the end part of a locking claw through a first shearing pin; the well cementation rubber plug is connected with the ball valve bottom plug through a second shearing pin; the shear strength of the first shear pin is greater than the shear strength of the second shear pin.
Description
Technical field
The application is related to oil gas well cementing operation field, more particularly to a kind of extension hanger.
Background technology
Drilling liner cementing refers to hang the technique that tail pipe is cemented the well, tail tube hanging on the sleeve pipe of upper strata using extension hanger
Device is the essential tool of liner completion.With the development of drilling technology, deep-well, ultradeep well, high angle hole, horizontal well, Multilateral Wells,
The continuous rise of the drilling technologies such as slim-hole small―gap suture well, and the high speed development of old street district technology, liner completion technology
Using more and more extensive.It is difficult to meet production need to treat that different well carries out liner completion operation to these using existing conventional hanger
Will, great down-hole accident even is caused sometimes, cause of accident is mainly caused by hanger unreasonable structure.Wherein, it is existing normal
A big problem existing for rule hanger is that hanger easily causes seat extension in advance in casing job circulation, causes not yet completion solid
Well operations open expansion operation.
The content of the invention
To solve the above problems, this application provides a kind of tail tube hanging for preventing from sitting extension in advance during fixed operation
Device.
To achieve the above object, the technical scheme that the application provides is as follows.
A kind of extension hanger, including：
With phase back to first end and the second end expansion tube, the expansion tube close to the first end side wall outside
It is provided with suspension part；
The central tube being arranged in the expansion tube, the first ring cavity, institute are formed between the central tube and the expansion tube
State side wall of the central tube close to second end and offer through hole；
The swollen cone seat being arranged in first ring cavity, the swollen cone seat have the projection towards the expansion inside pipe wall；
The expansion cone being sheathed in the swollen cone seat, the expansion cone are fixed in described convex close to the end at second end top
The upper end risen；
The locking jaw being arranged in first ring cavity, end top of the locking jaw away from second end are fixed in described
Raised lower end, forms the second ring cavity between the locking jaw and the central tube, second ring cavity by the through hole with
The central tube connection；
Ball valve bottom with fluid passage and valve seat is blocked up, and the valve seat is located in the fluid passage, and the central tube leans on
The end at nearly second end is stretched into the fluid passage and is connected with its inwall, and the ball valve bottom is stifled close to the first end
Lateral wall be connected by the first shear pin with the locking jaw close to the end at second end, can be set on the valve seat
Pitching；
Cementing plug, the cementing plug are connected to stifled close second end in the ball valve bottom by the second shear pin
End, drilling rod plug can be set on the cementing plug；The shearing strength of first shear pin is cut more than described second
Cut the shearing strength of pin.
In one embodiment, the expansion tube be arranged with outside the side wall of the first end multiple rubber rings with
Form the suspension part.
In one embodiment, in addition to：
Drill pipe nipple, one end of the drill pipe nipple can be connected with drilling rod tubing string, the other end insertion of the drill pipe nipple
In first ring cavity；
The swollen cone seat pull bar being placed in first ring cavity, one end of the swollen cone seat pull bar are inserted with the drill pipe nipple
Enter the end connection in first ring cavity, the other end of the swollen cone seat pull bar is connected with the swollen cone seat.
In one embodiment, the locking jaw has the first shoulder towards center pipe outer wall extension, described
Central tube has the second shoulder close to the end of the first end；When the locking jaw moves to first extreme direction, institute
The lower end of solid second shoulder can be supported by stating the upper end of first shoulder.
In one embodiment, in addition to：
The double pin ends being connected with the second end of the expansion tube；
The tail pipe pipe nipple that can be connected with tail pipe, the tail pipe pipe nipple are connected with double pin ends, and the cementing plug holds
It is placed in the tail pipe pipe nipple.
In one embodiment, in addition to：Expansion tube sealing ring, it is short that the expansion tube sealing ring is arranged on the drilling rod
On the lateral wall of its lower end, the first end of the expansion tube is fastened on the outer wall of the expansion tube sealing ring section.
In one embodiment, it is equipped with lubricating grease in first ring cavity.
In one embodiment, the swollen cone seat pull bar outer wall is arranged with sealing ring, and the sealing ring is located at the profit
The lower section of consistent lubricant and lubricating grease described in support.
Technical scheme more than, the beneficial effect of the application are：
(1), by setting the ball valve bottom with valve seat to block up, and it is connected with locking jaw by the first shear pin, and
Because the shearing strength of the first shear pin is more than the shearing strength of the second shear pin, therefore well cementing operation can only be completed
Afterwards, the pitching set by lower exoergic on valve seat builds the pressure to the first shear pin and cut, and can open expansion operation afterwards,
So as to prevent from sitting extension in advance in well cementing operation；
(2), the drill pipe nipple of upper lifting force and swollen cone seat pull bar can be applied to it in well head by setting, can effectively be reduced swollen
Cone seat and the up pressure of expansion cone, the displacement fluid reduced in the second ring cavity are acted on the fluid power of locking jaw, so as to reduce because
Hydraulic pressure is excessive, which may to be caused can not to complete caused by tail pipe seepage to expand to continue to suppress after operation, or tail pipe seepage, makes displacement fluid
Leaking in cementing slurry influences the probability that the situation of cementing quality occurs；
(3) rotation torque, is passed into tail pipe pipe nipple by double pin ends, double pin ends and expansion tube and tail pipe pipe nipple
Connection end need not set spline so as to keep the integrality of its end, and its such torsional strength is improved without rapid wear
It is bad；
(4) expansion tube sealing ring, is set by blocking between drill pipe nipple and expansion tube, expansion tube upper port is sealed, from
And it can avoid falling into expansion tube in foreign matter during entering well；
(5), by housing lubricating grease in the first ring cavity, it is possible to increase foreign matter enters expansion tube and swollen cone during expansion operation
The difficulty in the gap between seat pull bar, expansion cone, ensures being normally carried out for expansion operation；
(6), can be therein together with falling into by lubricating grease during operation is expanded, by setting sealing ring in the first ring cavity
Foreign matter is scraped, and in the process, lubricating grease uniform can be applied on the inwall of expansion tube, to reduce expansion tube and swollen cone
Seat pull bar, the frictional resistance of expansion cone, reduce the bulbs of pressure.
Brief description of the drawings
Accompanying drawing described here is only used for task of explanation, and is not intended in any way to limit model disclosed in the present application
Enclose.In addition, shape and proportional sizes of each part in figure etc. are only schematical, the understanding to the application is used to help, and
It is not the specific shape and proportional sizes for limiting each part of the application.Those skilled in the art, can under teachings of the present application
To select various possible shapes and proportional sizes to implement the application as the case may be.In the accompanying drawings：
Fig. 1 is the structural representation of the extension hanger of the application embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the application embodiment, the technical scheme in the application embodiment is carried out clear
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the application, rather than whole realities
Apply mode.Based on the embodiment in the application, those of ordinary skill in the art institute under the premise of creative work is not made
The every other embodiment obtained, belong to the scope of the application protection.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " on ", " under ", " outer ", " interior " and
Similar statement is that it is unique embodiment to be not offered as the ease of understanding and based on the explanation of accompanying drawing progress.
Unless otherwise defined, all of technologies and scientific terms used here by the article and the technical field of the application is belonged to
The implication that technical staff is generally understood that is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more
The arbitrary and all combination of related Listed Items.
Referring to Fig. 1, a kind of extension hanger that the application embodiment provides, it can include：With phase back to
The expansion tube 10 at the end 102 of first end 101 and second, the expansion tube 10 are provided with outside the side wall close to the first end 101
Suspension part 103.The central tube 20 being arranged in the expansion tube 10, is formed between the central tube 20 and the expansion tube 10
One ring cavity 120, side wall of the central tube 20 close to second end 102 offer through hole 201.It is arranged at first ring cavity
Swollen cone seat 40 in 120, the swollen cone seat 40 have the projection 401 extended to the inwall of expansion tube 10.It is sheathed on described swollen
Swollen cone seat 30 in cone seat 40, the swollen cone seat 30 are fixed on described raised 401 close to the end at second end 102 top.If
The locking jaw 50 being placed in first ring cavity 120, end top of the locking jaw 50 away from second end 102 are fixed in described
In projection 401, the second ring cavity 250 is formed between the locking jaw 50 and the central tube 20, second ring cavity 250 passes through institute
Through hole 201 is stated to connect with the central tube 20.Ball valve bottom with fluid passage 601 and valve seat 602 stifled 60, the valve seat 602
In the fluid passage 602, the central tube 20 stretches into the fluid passage 601 close to the end at second end 102
It is interior and be connected with its inwall, the ball valve bottom stifled 60 close to the first end 101 lateral wall by the first shear pin 65 with
The locking jaw 50 is connected close to the end at second end 102, and pitching 603 can be set on the valve seat 602.Cementing plug
70, the cementing plug 70 is connected to the ball valve bottom stifled 60 close to the end at second end 102 by the second shear pin 76
Portion, drilling rod plug 701 can be set on the cementing plug 70.The shearing strength of first shear pin 65 is more than described second
The shearing strength of shear pin 76.
In the present embodiment, latus rectum size can be change in the expansion tube 10.As shown in figure 1, the expansion
Pipe 10 is smaller close to the interior latus rectum of the first end 101, and the interior latus rectum close to second end 102 is larger.The expansion tube
10 are provided with suspension part 103 outside the side wall close to the first end 101, specifically, the suspension part 30 is arranged on interior latus rectum
The lateral wall of smaller 10 sections corresponding of expansion tube., can be close in the expansion tube 10 in a specific embodiment
Multiple rubber rings 1031 are arranged with to form the suspension part 103 outside the side wall of the first end 101.After completing expansion operation,
The multiple rubber ring 1031 can be set on the internal surface of sleeve pipe of Oil/gas Well, and is made by the friction force with internal surface of sleeve pipe
The expansion tube 10 has certain suspending weight ability, so as to so that the extension hanger of the application embodiment is outstanding solid in sleeve pipe
In.In addition, using multiple rubber rings 1031 as the suspension part 103, when completion expands the multiple rubber ring 1031 of operation
After setting on the internal surface of sleeve pipe of Oil/gas Well, the multiple rubber ring 1031 can also carry out seal pack to casing annulus, prevent
Only shaft bottom foreign matter is scurried into sleeve pipe.Furthermore the multiple rubber ring 1031 can be divided into several groups, each group can be with
Including 4-5 rubber ring 1031 to form suspension unit, the 4-5 rubber ring 1031 that each suspension unit includes vertically may be used
It is disposed at equal intervals, each suspension unit can also be set at equal intervals vertically.In this way, when the multiple rubber ring 1031 is set
When on the internal surface of sleeve pipe of Oil/gas Well, the suspension unit set at equal intervals can be with uniform stressed, so that the energy of the expansion tube 10
Enough relatively firm is outstanding solid in sleeve pipe；And relatively single larger rubber ring, the volume of multiple rubber rings 1031 of present embodiment
It is smaller, using multiple friction areas that can increase compared with small rubber ring 1031 with internal surface of sleeve pipe, so as in suspension phase homogenous quantities
During tail pipe string, the bulbs of pressure are significantly reduced.Certainly, in other implementations, the suspension part 103 is not limited to above-mentioned
Listed multiple rubber rings 1031, it can also include other forms, and the application embodiment is not limited thereto.Specifically
, for example, the slips of grappling pawl can be provided with close to the lateral wall of the first end 101 in the expansion tube 10, it is described
Slips with grappling pawl can be multiple, and the multiple slips can circumferentially be uniformly arranged on institute in a manner of annular array
The lateral wall of expansion tube 10 is stated, when completing to expand operation, the grappling pawl of the multiple slips can be anchored to the set of Oil/gas Well
On inside pipe wall, it can equally make the expansion tube 10 that there is suspending weight ability.Or can also be by close in the expansion tube 10
The lateral wall of the first end 101 sets rubber ring with forming the suspension part 103 with grappling pawl simultaneously.
In the present embodiment, the central tube 20 can be the constant straight tube of interior latus rectum, and its external diameter is less than the expansion
The internal diameter of pipe 10, in this way, when the central tube 20 is arranged in the expansion tube 10, described can be formed therebetween
One ring cavity 120.Side wall of the central tube 20 close to second end 102, which runs through, offers through hole 201, and the through hole 201 can
To connect space and its exterior space in the pipe of the central tube 20.In one preferred embodiment, the through hole 201 is
Multiple, the multiple through hole 201 circumferentially can be uniformly opened in the side wall of the central tube 20 in a manner of annular array,
So as to uniform divided flows fluid.
In the present embodiment, the swollen cone seat 40 is sheathed on outside the central tube 20, is placed in first ring cavity 120
It is interior and can be moved up and down in first ring cavity 120.The swollen cone seat 40 has what is extended to the inwall of expansion tube 10
Projection 401, specifically, referring to shown in Fig. 1, described raised 401 extend radially outward, and can contact the expansion tube 10
Inwall.
In the present embodiment, the swollen cone seat 30 is sheathed in the swollen cone seat 40, its outer wall and the expansion tube 10
Inwall at interior latus rectum change is in contact, and it is fixed on described raised 401 close to the end at second end 102 top, specifically,
Refer to shown in Fig. 1, solid raised 401 upper end in lower end top of the swollen cone seat 30.In this way, when the swollen cone seat 40 is in institute
State when being moved up in the first ring cavity 120, by described raised 401 the swollen cone seat 30 can be promoted up in the lump.
In the present embodiment, the locking jaw 50 is sheathed on outside the central tube 20, is placed in first ring cavity 120
It is interior and can be moved up and down in first ring cavity 120.End top of the locking jaw 50 away from second end 102 is fixed in
On described raised 401, specifically, referring to shown in Fig. 1, solid raised 401 lower end in upper end top of the locking jaw 50.Such as
This, when the locking jaw 50 moves up in first ring cavity 120, can promote described swollen by described raised 401
Cone seat 40 is up in the lump, from the foregoing, and then swollen cone seat 30 can be promoted up.In addition, the locking jaw 50 and the center
The second ring cavity 250 is formed between pipe 20, second ring cavity 250 is connected by the through hole 201 with the central tube 20, such as
This, the high-pressure fluid in the central tube 20 can enter in second ring cavity 250 through the through hole 201 and act on described
The lower end of locking jaw 50, so as to move up offer driving force in first ring cavity 120 for the locking jaw 50.
In the present embodiment, the ball valve bottom stifled 60 has fluid passage 601 and valve seat 602, and the valve seat 602 is located at
In the fluid passage 601.Specifically, referring to shown in Fig. 1, the valve seat 602 can be by the inwall of the fluid passage 601
Project radially inwards to be formed.The lower end of the central tube 20 is stretched into the fluid passage 601 and is connected with its inwall, specifically
, can be threaded connection, the bottom of central tube 20 can be with contact in the upper end of the valve seat 602, and fluid passage 601 is with
Heart pipe 20 connects.The upper end lateral wall at the ball valve bottom stifled 60 is connected by the lower end of the first shear pin 65 and the locking jaw 50
Connect.Pitching 603 can be set on the valve seat 602, sealing is formed so as to block up the pipeline space on 60 tops to the ball valve bottom,
In this way, the fluid in the central tube 20 can be built the pressure in it to form high-pressure fluid.First shear pin 65 has
First shearing strength, when the high-pressure fluid to be formed that built the pressure in the central tube 20 acts on described first by the pitching 603
When power on shear pin 65 is more than first shearing strength, first shear pin 65 will be cut, so as to make
Ball valve bottom stifled 60 is stated with the locking jaw 50 to depart from.
In the present embodiment, the cementing plug 70 is connected to the ball valve bottom stifled 60 by the second shear pin 76 and leaned on
The end at nearly second end 102, specifically, referring to shown in Fig. 1, the upper end of the cementing plug 70 is cut by described second
Cut the lower end that pin 76 is connected to the ball valve bottom stifled 60.Drilling rod plug 701, the well cementation can be set on the cementing plug 70
Plug 70 and the drilling rod plug 701 can combine to form Compounded rubber plug and complete a bruising, so as to the cementing plug
The pipeline space on 70 tops forms sealing, in this way, when injecting displacement fluid into the central tube 20, can be in the central tube
Being built the pressure in 20 makes displacement fluid pressure rise.Second shear pin 76 has the second shearing strength, when in the central tube 20
When the power that replacement hydraulic coupling is acted on second shear pin 76 by Compounded rubber plug is more than second shearing strength, institute
State the second shear pin 76 to be cut, from this cementing plug 70 can be made to depart from the ball valve bottom stifled 60.Now, it is compound
Plug, which is advanced into by under in tail pipe, realizes secondary bruising, completes well cementation.In the present embodiment, first shear pin 65
Shearing strength is more than the shearing strength of second shear pin 76, to ensure second shear pin 76 prior to described first
Shear pin 65 is cut.
During implementation, after the extension hanger of the application embodiment is lowered into Oil/gas Well specified location, circulating mud, squeeze
Cement, tripping in drilling rod plug 701, drilling rod plug 701 is set forms a Compounded rubber plug bruising of completion on cementing plug 70.To
Injection displacement fluid, which is suppressed to the second shear pin 76, in central tube 20 is cut, and is advanced at tail pipe float collar and is realized under Compounded rubber plug
Secondary bruising, complete well cementation.Pitching 603 is transferred into central tube 20, pitching 603 is set on ball valve bottom stifled 60, cement injection,
Cement mortar via through holes 201 enter in the second ring cavity 250 and act on the lower end of locking jaw 50, continue to inject cement mortar and cut to first
Cut pin 65 to be cut, while cement injection, upper lifting force is applied to tubing string in well head, then in the upper lifting force and displacement fluid
Fluid power effect under, the solid swollen cone seat 40 in the top of locking jaw 50 is up, and then promotes swollen cone seat 30 up, so that expansion tube 10 is along footpath
To expanding, until suspension part 103 is set on the internal surface of sleeve pipe of Oil/gas Well, expansion operation is completed.
The extension hanger of present embodiment passes through the first shearing by setting the ball valve bottom with valve seat 602 stifled 60
It is connected by pin 65 with locking jaw 50, and because the shearing strength of the first shear pin 65 is more than the anti-of the second shear pin 76
Intensity is cut, therefore the pitching 603 on valve seat 602 can only be set by lower exoergic and built the pressure to first after well cementing operation is completed
Shear pin 65 is cut, and can open expansion operation afterwards, so as to prevent from sitting extension in advance in well cementing operation.
In one embodiment, the extension hanger can also include：Drill pipe nipple 80, the drill pipe nipple 80
One end can be connected with drilling rod tubing string, and the other end of the drill pipe nipple 80 is inserted in first ring cavity 120.It is placed in described
Swollen cone seat pull bar 90 in one ring cavity 120, one end and the drill pipe nipple 80 of the swollen cone seat pull bar 90 insert described first
End connection in ring cavity 120, the other end of the swollen cone seat pull bar 90 are connected with the swollen cone seat 40.
In the present embodiment, one end of the drill pipe nipple 80 can be connected with drilling rod tubing string, specifically, referring to Fig. 1
Shown, the upper end of the drill pipe nipple 80 can set internal thread hole, so as to realize drill pipe nipple 80 and drilling rod tubing string
Threaded connection.There is passage 801, the passage 801 can connect with the central tube 20 in the drill pipe nipple 80.The brill
The outside dimension of bar pipe nipple 80 between the central tube 20 and the expansion tube 10, in this way, its lower end may be inserted into it is described
In first ring cavity 120.The upper end of the swollen cone seat pull bar 90 can be connected with the lower end of the drill pipe nipple 80, specifically, can
Think threaded connection.The lower end of the swollen cone seat pull bar 90 can be connected with the upper end of the swollen cone seat 40.From the foregoing, enter
Row expansion operation when, drilling rod tubing string can be applied with well head and put forward power, drill pipe nipple 80 is up, will drive be sequentially connected it is swollen
Cone seat pull bar 90 and swollen cone seat 40 are up, and the top set of projection 401 expansion cone 30 of swollen cone seat 40 in the lump send out by upper expansion tube 10 of exercising
Life is radially expanded, until suspension part 103 is set on the internal surface of sleeve pipe of Oil/gas Well, completes expansion operation.Present embodiment passes through
Setting can apply the drill pipe nipple 80 of upper lifting force and swollen cone seat pull bar 90 to it in well head, can effectively reduce swollen cone seat 40 and expansion
30 up pressure are bored, the displacement fluid reduced in the second ring cavity 250 is acted on the fluid power of locking jaw 50, so as to reduce because of hydraulic pressure
It is excessive may cause can not to complete caused by tail pipe seepage to expand to continue to suppress after operation, or tail pipe seepage leak displacement fluid
The probability that the situation of cementing quality occurs is influenceed into cementing slurry.
In one embodiment, the locking jaw 50 has the first shoulder 501 extended to the central tube 20, described
Central tube 10 has the second shoulder 104 close to the end of the first end 101.When the locking jaw 50 is to the first end 101
When direction is moved, the upper end of the first shoulder 501 can support the lower end of solid second shoulder 104.
In the present embodiment, from the foregoing, when expanding operation, upper lifting pipe post can drive swollen cone seat 40 and expansion cone 30
Up, then the locking jaw 50 being connected with swollen cone seat 40 can be up in the lump.After completing expansion operation, continue upper lifting pipe post, make locking
The lower end of solid the second shoulder 104 in the central tube 20 is supported in the upper end of first shoulder 501 on pawl 50, in will be described
Heart pipe 20 and the ball valve bottom stifled 60 being attached thereto propose well head, and then complete tail tube hanging operation.
In one embodiment, the extension hanger can also include：Double pin ends 100, double pin ends 100
It is connected with the second end 102 of the expansion tube 10.The tail pipe pipe nipple 110 that can be connected with tail pipe, the tail pipe pipe nipple 110 with it is described
Double pin ends 100 are connected, and the cementing plug 70 is placed in the tail pipe pipe nipple 110.
During tail pipe enters well and cement injection, it will usually in well mouth rotary drilling rod tubing string, to solve tail pipe chance
The problem of resistance and displacement efficiency of cement slurry are low.Prior art generally use is provided with the horn mouth of spline, spline and expansion tube
The mode of grafting reaches the purpose of rotation.However, the processed rear wall of horn mouth is relatively thin, then set in the relatively thin side wall of the wall thickness
The spline for transmitting rotation torque, the intensity decreases of material are put, and resistance is larger during rotary drill rod tubing string, such horn mouth is easy
Damage.In the present embodiment, double pin ends 100 can connect with the expansion tube 10 and the screw thread of tail pipe pipe nipple 110
Connect, and rotation torque is passed into tail pipe pipe nipple 110 by double pin ends 100, double pin ends 100 and expansion tube 10 and tail pipe are short
The connection end of section 110 need not set spline so as to keep the integrality of its end, and its such torsional strength is improved
And it is hardly damaged.Further, the material that double pin ends 100 can use intensity higher is made, further to improve it
Torsional strength.
In one embodiment, the extension hanger can also include：Expansion tube sealing ring 130, the expansion tube
Sealing ring 130 is arranged on the drill pipe nipple 80 on the lateral wall of its lower end, and the first end 101 of the expansion tube 10 is supported admittedly
In on the outer wall of the expansion tube sealing ring 100.
In the present embodiment, the expansion tube sealing ring 130 may be threadably coupled to the drill pipe nipple 80 close to it
On the lateral wall of lower end, its interface can be in ridge shape.Expansion tube sealing ring 130 can be moved down by rotation and be stuck in drill pipe nipple
Between 80 and expansion tube 10, the upper port of expansion tube 10 is sealed, so as to avoid the foreign matter during well is entered from falling into expansion tube 10
In.
In one embodiment, it is equipped with lubricating grease 140 in first ring cavity 120.In the present embodiment, it is described
Lubricating grease 140 has certain viscosity and suspendability, and it can be filled in interior its of first ring cavity 120 and arrive sealing and isolation
Effect.Specifically, during expansion operation, expansion tube 10 expands upper port spreading, and foreign matter can be fallen into by the upper port of the spreading
In first ring cavity 120, lubricating grease 140 can suspend the foreign matter, increase the foreign matter into expansion tube 10 and swollen cone seat pull bar 90,
The difficulty in the gap between expansion cone 30, ensure being normally carried out for expansion operation.
In one embodiment, the swollen outer wall of cone seat pull bar 90 is arranged with sealing ring 150, the sealing ring 150
In the lower section of the lubricating grease 140 and lubricating grease 140 described in support.
In the present embodiment, the sealing ring 150 is sheathed on outside swollen cone seat pull bar 90, and up in swollen cone seat pull bar 90
When be driven it is up in the lump, can so as to which the lubricating grease 140 is scraped together with foreign matter therein is fallen into, and in the process
So that the lubricating grease 140 is uniformly applied on the inwall of expansion tube 10, to reduce expansion tube 10 and swollen cone seat pull bar 90, expansion
The frictional resistance of cone 30, reduce the bulbs of pressure.
It should be noted that in the description of the present application, term " first ", " second " etc. are only used for describing purpose, both
Between and sequencing is not present, can not be interpreted as indicating or implying relative importance.In addition, in the description of the present application,
Unless otherwise indicated, " multiple " are meant that two or more.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
State, many embodiments and many applications outside the example provided all will be aobvious and easy for a person skilled in the art
See.Therefore, the scope of this teaching should not determine with reference to foregoing description, but should with reference to preceding claims and this
The four corner of the equivalent that a little claims are possessed determines.It is for comprehensive purpose, all articles and special with reference to including
The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as applicant the theme is not thought of as it is disclosed
Apply for a part for theme.
Claims (8)
- A kind of 1. extension hanger, it is characterised in that including：With phase back to first end and the second end expansion tube, the expansion tube close to the first end side wall outside set There is suspension part；The central tube being arranged in the expansion tube, the first ring cavity is formed between the central tube and the expansion tube, in described Side wall of the heart pipe close to second end offers through hole；The swollen cone seat being arranged in first ring cavity, the swollen cone seat are sheathed on outside the central tube, and the swollen cone seat has Towards the projection of the expansion inside pipe wall；The expansion cone being sheathed in the swollen cone seat, the expansion cone are fixed in described raised close to the end at second end top Upper end；The locking jaw being arranged in first ring cavity, end top of the locking jaw away from second end are fixed in the projection Lower end, form the second ring cavity between the locking jaw and the central tube, second ring cavity by the through hole with it is described Central tube connects；Ball valve bottom with fluid passage and valve seat is blocked up, and the valve seat is located in the fluid passage, and the central tube is close to institute The end for stating the second end is stretched into the fluid passage and is connected with its inwall, and the ball valve bottom is stifled close to the outer of the first end Side wall is connected by the first shear pin with the locking jaw close to the end at second end, and throwing can be set on the valve seat Ball；Cementing plug, the cementing plug are connected to the end at stifled close second end in the ball valve bottom by the second shear pin Portion, drilling rod plug can be set on the cementing plug；The shearing strength of first shear pin is more than second shear pin The shearing strength of nail.
- 2. hanger as claimed in claim 1, it is characterised in that the side wall overcoat in the expansion tube close to the first end Provided with multiple rubber rings to form the suspension part.
- 3. hanger as claimed in claim 1, it is characterised in that also include：Drill pipe nipple, one end of the drill pipe nipple can be connected with drilling rod tubing string, described in the other end insertion of the drill pipe nipple In first ring cavity；The swollen cone seat pull bar being placed in first ring cavity, one end and the drill pipe nipple insertion institute of the swollen cone seat pull bar The end connection in the first ring cavity is stated, the other end of the swollen cone seat pull bar is connected with the swollen cone seat.
- 4. hanger as claimed in claim 3, it is characterised in that the locking jaw, which has towards the center pipe outer wall, to be extended First shoulder, the central tube has the second shoulder close to the end of the first end；When the locking jaw is to described first When extreme direction moves, the upper end of the first shoulder can support the lower end of solid second shoulder.
- 5. the hanger as described in claim 3 or 4, it is characterised in that also include：The double pin ends being connected with the second end of the expansion tube；The tail pipe pipe nipple that can be connected with tail pipe, the tail pipe pipe nipple are connected with double pin ends, and the cementing plug is placed in In the tail pipe pipe nipple.
- 6. hanger as claimed in claim 3, it is characterised in that also include：Expansion tube sealing ring, the expansion tube sealing ring The drill pipe nipple is arranged on the lateral wall of its lower end, the first end of the expansion tube is fastened on the expansion seal of tube On the outer wall of ring.
- 7. hanger as claimed in claim 3, it is characterised in that be equipped with lubricating grease in first ring cavity.
- 8. hanger as claimed in claim 7, it is characterised in that the swollen cone seat pull bar outer wall is arranged with sealing ring, described Sealing ring is located at the lower section of the lubricating grease and lubricating grease described in support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510956001.8A CN105604508B (en) | 2015-12-18 | 2015-12-18 | Liner hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510956001.8A CN105604508B (en) | 2015-12-18 | 2015-12-18 | Liner hanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105604508A CN105604508A (en) | 2016-05-25 |
| CN105604508B true CN105604508B (en) | 2018-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510956001.8A Active CN105604508B (en) | 2015-12-18 | 2015-12-18 | Liner hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105604508B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642344A (en) * | 2017-10-30 | 2018-01-30 | 华鼎鸿基石油工程技术(北京)有限公司 | Buckling type tail pipe hanger |
| CN107724991B (en) * | 2017-10-30 | 2024-08-09 | 德州隆科石油装备有限公司 | Expansion liner hanger with slips |
| CN107701121B (en) * | 2017-11-03 | 2019-05-28 | 中国海洋石油集团有限公司 | Exempt to bore and exempts to fish out solid completion integral tubing string |
| CN111472689B (en) * | 2019-01-23 | 2024-09-17 | 中石化石油工程技术服务有限公司 | Expansion suspension type tail pipe drilling operation device and operation method |
| CN109736733B (en) * | 2019-02-01 | 2024-11-01 | 中国地质科学院勘探技术研究所 | Expansion pipe feeding device |
| CN109854201A (en) * | 2019-04-01 | 2019-06-07 | 华鼎鸿基石油工程技术(北京)有限公司 | One kind is every adopting packer and every adopting construction method |
| CN114320203B (en) * | 2022-01-06 | 2023-07-21 | 西南石油大学 | A secondary rotary expansion tool for expansion pipe and open hole patching process |
| CN118881329B (en) * | 2024-09-25 | 2025-01-28 | 中国石油集团西部钻探工程有限公司 | Continuous cementing linkage concealed soluble graded cementing device |
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|---|---|---|---|---|
| US4862966A (en) * | 1988-05-16 | 1989-09-05 | Lindsey Completion Systems, Inc. | Liner hanger with collapsible ball valve seat |
| CN101260791A (en) * | 2007-03-08 | 2008-09-10 | 中国石油化工股份有限公司 | Raising-out type ball seat |
| CN201460778U (en) * | 2009-07-30 | 2010-05-12 | 中国石油天然气股份有限公司 | Expansion pipe type tail pipe hanger |
| CN202832323U (en) * | 2012-08-23 | 2013-03-27 | 中国石油天然气股份有限公司 | Locking type expansion liner hanger |
| CN103758476A (en) * | 2014-01-03 | 2014-04-30 | 中国石油天然气股份有限公司 | Non-cementing expansion type liner hanger |
| CN103790533A (en) * | 2014-01-03 | 2014-05-14 | 中国石油天然气股份有限公司 | Expansion type liner hanger capable of cementing well |
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2015
- 2015-12-18 CN CN201510956001.8A patent/CN105604508B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4862966A (en) * | 1988-05-16 | 1989-09-05 | Lindsey Completion Systems, Inc. | Liner hanger with collapsible ball valve seat |
| CN101260791A (en) * | 2007-03-08 | 2008-09-10 | 中国石油化工股份有限公司 | Raising-out type ball seat |
| CN201460778U (en) * | 2009-07-30 | 2010-05-12 | 中国石油天然气股份有限公司 | Expansion pipe type tail pipe hanger |
| CN202832323U (en) * | 2012-08-23 | 2013-03-27 | 中国石油天然气股份有限公司 | Locking type expansion liner hanger |
| CN103758476A (en) * | 2014-01-03 | 2014-04-30 | 中国石油天然气股份有限公司 | Non-cementing expansion type liner hanger |
| CN103790533A (en) * | 2014-01-03 | 2014-05-14 | 中国石油天然气股份有限公司 | Expansion type liner hanger capable of cementing well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105604508A (en) | 2016-05-25 |
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