CN109736740A - A kind of composite drive mandrel anchor sleeve head - Google Patents
A kind of composite drive mandrel anchor sleeve head Download PDFInfo
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- CN109736740A CN109736740A CN201910162973.8A CN201910162973A CN109736740A CN 109736740 A CN109736740 A CN 109736740A CN 201910162973 A CN201910162973 A CN 201910162973A CN 109736740 A CN109736740 A CN 109736740A
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- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 238000004873 anchoring Methods 0.000 claims abstract description 159
- 230000003213 activating effect Effects 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims description 67
- 230000005284 excitation Effects 0.000 claims description 33
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 2
- 239000000725 suspension Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 5
- 238000009530 blood pressure measurement Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 241000826860 Trapezium Species 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000551708 Lamprolia victoriae Species 0.000 description 1
- 150000008363 butyronitriles Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a kind of composite drive mandrel anchor sleeve heads, it is related to wellhead assembly technical field, including casing casing and anchoring mandrel unit, wherein, pressurization hole is additionally provided on the side wall of casing casing, the first end in pressurization hole is connect with anchoring hole portion, and the second end in hole of pressurizeing extends to the outside of casing casing；Anchoring mandrel unit includes slips activating member, anchoring slips and the annular piston body for being anchored mandrel body and being from top to bottom sequentially sheathed on the outside of anchoring mandrel body.The casing head, which can satisfy the suspension of mandrel hanger, can increase the stability and reliability of casing head after anchoring mandrel body and casing casing are anchored to avoid tubing string play.
Description
Technical field
The present invention relates to wellhead assembly technical fields, and in particular to a kind of composite drive mandrel anchor sleeve head.
Background technique
In mandrel hanger use process, because cementing quality or casing such as damage at the reasons, annular space will cause there are pressure,
Cause to generate opposite play between mandrel hanger and casing head ontology, leads to seal failure, or even cause the accident.
Tubing string play can be avoided while the suspension for meeting mandrel hanger by how designing one kind, increase casing head
Stability and the casing head of reliability become those skilled in the art's technical problem urgently to be resolved.
Summary of the invention
The present invention provides a kind of composite drive mandrel anchoring set for the above-mentioned technical problem in the presence of the prior art
Tube head, technical problems to be solved are that the casing head, can be to avoid while the suspension that can satisfy mandrel hanger
Tubing string play increases the stability and reliability of casing head.
To realize the above-mentioned technical purpose, the embodiment of the invention provides a kind of composite drive mandrel anchor sleeve heads, comprising:
Casing casing, has vertically arranged inner hole, which has anchoring hole portion and cone hole part, the anchoring hole portion
Positioned at the upside of the cone hole part, and the anchoring hole portion is connect with the big end of the cone hole part；The side of described sleeve pipe casing
Pressurization hole is additionally provided on wall, the first end in the pressurization hole is connect with the anchoring hole portion, and the second end in the pressurization hole extends
To the outside of described sleeve pipe casing, the second end in the pressurization hole is equipped with check valve；And
It is anchored mandrel unit, including being anchored mandrel body and being from top to bottom sequentially sheathed on the outside of the anchoring mandrel body
Slips activating member, anchoring slips and annular piston body, the anchoring mandrel body can be rested upon on the cone hole part and in described
The junction for being anchored mandrel body and the cone hole part is equipped with primary seal；The annular piston body can be installed on the anchoring mandrel
In annular space between body and the anchoring hole portion, also, the Internal periphery of the annular piston body and the anchoring mandrel body
It can slide up and down and be tightly connected, the outer profile of the annular piston body can be slided up and down with the anchoring hole portion and the company of sealing
It connects；Cavity connection between the first end and the annular piston body and the primary seal in the pressurization hole；The annular piston
The upper end of body and the lower end of the anchoring slips offset；The anchoring slips is multiple, and multiple anchoring slips surround institute
The central axis for stating anchoring mandrel body is laid；The outer profile of the slips activating member is equipped with the excitation conical surface, the excitation conical surface
Small end is located at close to the anchoring slips side；The anchoring slips has the inner conical surface to match with the excitation conical surface, described
Excite the conical surface and the inner cone face contact；The outside of the anchoring slips is equipped with toothed surface, the toothed surface and the anchor hole
Portion is corresponding.
Preferably, the anchoring mandrel body is equipped with multiple dovetail tangs, and the dovetail tangs are along the anchoring mandrel
The central axial direction of body extends, and the dovetail tangs match with the dovetail groove on the anchoring slips.
Preferably, the outer profile of the anchoring mandrel body is equipped with additional confinement, the additional confinement and the anchor
Determine hole portion sealed connection, the additional confinement is between the primary seal and the annular piston body；The pressurization hole
Cavity connection between first end and the additional confinement and the annular piston body.
Preferably, the additional confinement is equipped at least one annular seal groove, is provided in the annular seal groove
Sealing element.
Preferably, the uniformly distributed multiple tops for having radial penetration described sleeve pipe head capsule body sidewall on described sleeve pipe casing
The front end of silk, the jackscrew is equipped with conical top；The outer tip end of the slips activating member is equipped with and the conical top phase
The activating member male cone (strobilus masculinus) matched.
Preferably, the inside top of the slips activating member is equipped with activating member internal taper hole, and the anchoring mandrel unit also wraps
Clamp nut disk is included, is spirally connected at the top of the clamp nut disk and the anchoring mandrel body, is set on the outside of the clamp nut disk
There is the tapered portion to match with the activating member internal taper hole.
Preferably, the lower end outside of the annular piston body is equipped with the first pressure slot, and the first pressure slot adds with described
Press the first end connection in hole.
Preferably, the primary seal includes the first sealing ring, the second sealing ring and dead ring, and first sealing ring is located at
The upside of second sealing ring, the dead ring are located at the downside of second sealing ring, the dead ring and the anchoring
Mandrel body is spirally connected.
Preferably, there is gap at the cooperation of the dovetail groove and dovetail tangs.
Preferably, the upper top surface of the clamp nut disk is uniformly distributed multiple reinforcing holes.
The one or more technical solutions provided in the embodiment of the present invention, have at least the following technical effects or advantages: one
Kind composite drive mandrel anchor sleeve head, including casing casing and anchoring mandrel unit, the anchoring mandrel unit are set in this
In casing casing.The casing head can satisfy the suspension of mandrel hanger, avoid tubing string play, increase the stability of casing head
And reliability.
Further, which has vertically arranged inner hole, which has anchoring hole portion and cone hole part.Institute
It states cone hole part and on the one hand provides support force, the company of sealing between another aspect cone hole part and anchoring mandrel unit for anchoring mandrel unit
It connects, realizes the sealing of casing annulus.
Closer, annular piston body, anchoring slips and slips activating member combine to form hydraulic excitation mechanism, the ring
Shape piston body can be installed in the annular space between the anchoring mandrel body and the anchoring hole portion, also, the annular
The Internal periphery of piston body can be slided up and down and be tightly connected with the anchoring mandrel body, the outer profile of the annular piston body and institute
Stating anchoring hole portion can slide up and down and be tightly connected, the first end and the annular piston body and the primary seal in the pressurization hole
Between cavity connection.When injecting pressure-bearing medium into the cavity by hole of pressurizeing, the lower end of the cavity is sealed up, and pressure-bearing is situated between
Matter can push annular piston body to move up.The upper end of the annular piston body and the lower end of the anchoring slips offset, and power is passed
Anchoring slips is passed, anchoring slips is further pushed to move up.Anchoring slips move up during by the excitation conical surface it is radial to
Outer motive force effect, also can gradually be displaced outwardly along radial direction.The outside of the anchoring slips is equipped with toothed surface, described
Toothed surface is corresponding with the anchoring hole portion.Toothed surface and anchoring hole portion occlusal contact condition, realize anchoring mandrel body and casing head capsule
The anchoring of body.
Further, dovetail connecting structure is formed between the dovetail groove and dovetail tangs, and dovetail groove and dovetail are convex
There is at cooperation certain gap between rising.Dovetail connecting structure can be avoided anchoring slips and fall from anchoring mandrel body, another
Aspect also allows to be anchored slips in the axially and radially fine motion of anchoring mandrel body, carries out anchoring movement.
Further, when injecting pressure-bearing medium into the cavity by hole of pressurizeing, anchoring mandrel body is generally formed
Piston structure, pressure-bearing medium can apply downward pressure to anchoring mandrel body, which can be improved at primary seal
Contact pressure, the further sealing effect for improving primary seal.In addition to this, the anchor hole of additional confinement and casing casing
The sealing that portion is formed also improves the sealing performance between anchoring mandrel unit and casing casing on the whole.
Further, jackscrew, slips activating member and anchoring slips are combined into first manual excitation mechanism.Rotation top
Silk tail portion, the conical top of jackscrew front end squeeze excitation male cone (strobilus masculinus), make slips activating member along the axial direction of anchoring mandrel body
It moving down, the inner conical surface that the excitation conical surface on slips activating member squeezes anchoring slips is moved radially outward anchoring slips,
To realize anchoring.
Further, clamp nut disk, slips activating member and anchoring slips form the second manual excitation mechanism, utilize
Reinforcing hole on clamp nut disk can rotatably compress nut plate using auxiliary tool (such as extension bar, bolt etc.), compress spiral shell
The tapered portion of stamper squeezes the activating member internal taper hole on slips activating member, pushes slips activating member to move down, slips activating member moves down
Anchoring slips can be equally excited to realize the anchoring between anchoring mandrel unit and casing casing.
In conclusion hydraulic excitation mechanism is formd on composite drive mandrel anchor sleeve head of the invention, it can be with shape
At first manual excitation mechanism and the second manual excitation mechanism, each excitation mechanism, which can both work independently, realizes swashing for anchoring slips
Hair can also be applied in combination according to scene needs.The casing head can satisfy the suspension of mandrel hanger, anchoring mandrel body and set
After the anchoring of tube head shell, the stability and reliability of casing head can be increased to avoid tubing string play.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the composite drive mandrel anchor sleeve head of an embodiment of the present invention；
Fig. 2 is the structural representation of the composite drive mandrel anchor sleeve head middle sleeve casing of an embodiment of the present invention
Figure；
Fig. 3 is the structural representation that mandrel unit is anchored in the composite drive mandrel anchor sleeve head of an embodiment of the present invention
Scheme (hatching is omitted in order to facilitate observation of)；
Fig. 4 is the partial enlarged view A in Fig. 3；
Fig. 5 is the structural representation of annular piston body in the composite drive mandrel anchor sleeve head of an embodiment of the present invention
Figure；
Fig. 6 is the cross-sectional view B-B in Fig. 3；
Fig. 7 is the structural representation of slips activating member in the composite drive mandrel anchor sleeve head of an embodiment of the present invention
Figure；
Fig. 8 is the top view of clamp nut disk in the composite drive mandrel anchor sleeve head of an embodiment of the present invention；
Fig. 9 is that the operating principle of the clamp nut disk of the composite drive mandrel anchor sleeve head of an embodiment of the present invention is shown
It is intended to；
Figure 10 is the theory of constitution figure of primary seal in the composite drive mandrel anchor sleeve head of an embodiment of the present invention.
In figure,
10- casing casing, 11- are anchored hole portion, 12- pressurization hole, 13- cone hole part, 14- top wire hole；
20- is anchored mandrel unit,
21- anchoring mandrel body, 211- dovetail tangs, 212- additional confinement, 2121- annular seal groove, 213- second are applied
Indent,
22- annular piston body, 221- first press slot, 222- external seal sliding surface, seal sliding surface in 223-,
23- anchoring slips, 231- dovetail groove, 232- toothed surface, 233- inner conical surface,
24- slips activating member, the 241- excitation conical surface, 242- activating member internal taper hole, the first pilot hole of 243-, 244- second are led
Xiang Kong, 245- activating member male cone (strobilus masculinus),
25- clamp nut disk, 251- tapered portion, 252- reinforce hole, 26- auxiliary seal ring, 27- primary seal, 271- first
Sealing ring, the second sealing ring of 272-, 273- dead ring, 274- third sealing ring, the 4th sealing ring of 275-, 28- double male joint；
30- check valve；
40- jackscrew, 41- conical top；
50- head valve, 60- pressure measurement, 70- extension bar.
Specific embodiment
Detailed explanation and illustration is carried out to the present invention with reference to the accompanying drawings of the specification.
Refering to what is shown in Fig. 1, a kind of composite drive mandrel anchor sleeve head, including casing casing 10 and anchoring mandrel unit
20, which sets in the casing casing 10 and is anchored with casing casing 10, and it is outstanding to can satisfy mandrel
The suspension of hanging device avoids tubing string play, increases the stability and reliability of casing head.
In general, the outside of casing casing 10 can also install multiple head valves 50 and pressure measurement 60.Well
Mouth valve 50 for example can be flap type；Pressure measurement 60 for example can be pressure gauge.
With reference to Fig. 2, which has vertically arranged inner hole, which has anchoring hole portion 11 and cone hole part
13.13 one side of cone hole part is that anchoring mandrel unit 20 provides support force, another aspect cone hole part 13 and anchoring mandrel unit 20
Between be tightly connected, realize the sealing of casing annulus.
Anchoring hole portion 11 is located at the upside of cone hole part 13, and is anchored hole portion 11 and connect with the big end of cone hole part 13.This implementation
In example, the diameter of bore for being anchored hole portion 11 is identical as the outside diameter of cone hole part 13, it is to be understood that, it is anchored the inner hole of hole portion 11
Diameter can also be greater than the outside diameter of cone hole part 13, not limit particularly herein.In addition, anchoring hole portion 11 and cone hole part 13
It can be connected directly, can also be indirectly connected by other structures.
Pressurization hole 12 is additionally provided on the side wall of casing casing 10, the first end in hole 12 of pressurizeing is connect with anchoring hole portion 11,
The second end in pressurization hole 12 extends to the outside of casing casing 10.In the present embodiment, pressurization hole 12 setting direction be along
The radial direction of casing casing 10, or perhaps it is horizontally disposed, in addition to this, pressurization hole 12 also can according to need setting
It is inclined.
Preferably, check valve 30 is installed at the second end in pressurization hole 12, when by pressurization hole 12 to casing casing 10
When injection pressure-bearing medium (such as hydraulic oil, the water etc.) of inside, check valve 30 plays the role of limiting the flow direction of pressure-bearing medium.
However, it should be understood that check valve 30 can be integrated into pressurization hole 12, check valve 30 can also be attached to casing head
Installation tool in.
With reference to Fig. 3 and Fig. 4, mandrel unit 20 is anchored including anchoring mandrel body 21 and is from top to bottom sequentially sheathed on anchoring
Slips activating member 24, anchoring slips 23 and the annular piston body 22 in 21 outside of mandrel body.The lower end for being anchored mandrel body 21 can be with
Double male joint 28 connects, and double male joint 28 with tubing string (such as surface pipe) for connecting.
Anchoring mandrel body 21 can be rested upon to be set on cone hole part 13 and in the junction of anchoring mandrel body 21 and cone hole part 13
There is primary seal 27.Preferably, with reference to Fig. 3, primary seal 27 includes the first sealing ring 271, the second sealing ring 272 and dead ring 273,
First sealing ring 271 is located at the upside of the second sealing ring 272, and the first sealing ring 271 is located in the second sealing ring 272 and anchoring core
Between axis body 21.Dead ring 273 is located at the downside of the second sealing ring 272, and dead ring 273 is spirally connected with anchoring mandrel body 21, by the
Two sealing rings 272 and the first sealing ring 271 are fixed in anchoring mandrel body 21.The lower end outside of second sealing ring 272 be equipped with
The chamfering structure that the tapered portion 251 of casing casing 10 matches.In the present embodiment, the first sealing ring 271 is preferably flexible material
Matter (such as rubber), the second sealing ring 272 are preferably metal material.
It should be understood that the structure of primary seal 27 has multiple choices.It, can also be for such as flowering structure: main with reference to Figure 10
Sealing 27 includes the 4th sealing ring 275 being from top to bottom sheathed in anchoring mandrel body 21, the sealing of third sealing ring 274, first
Enclose the 271, second sealing ring 272 and dead ring 273, wherein the 4th sealing ring 275 preferably has rectangular section, and is soft
Property material (such as high saturation hydrogenated butyronitrile)；Third sealing ring 274, the first sealing ring 271 and the second sealing ring 272 form combination
Sealing, wherein third sealing ring 274, the first sealing ring 271 and the second sealing ring 27 are preferably metal material, and first seals
Circle 271 is preferably flexible metal material (such as 304SS or 316SS etc.).In the present embodiment, third sealing ring 274 and first
The section of sealing ring 271 is all provided with the trapezium structure that oriented second sealing ring 272 protrudes, and the section of the second sealing ring 272 is equipped with
Accommodate the dovetail groove of above-mentioned trapezium structure.When being anchored the carrying of mandrel body 21, third sealing ring 274 and the first sealing ring 271 are squeezed
It presses the second sealing ring 272 that it is made to project radially outwardly deformation, is formed and be tightly connected between casing casing 10.
Annular piston body 22 can be installed on anchoring mandrel body 21 and be anchored in the annular space between hole portion 11, also,
The Internal periphery (with reference to the interior seal sliding surface 223 in Fig. 5) of annular piston body 22 can slide up and down and close with anchoring mandrel body 21
Envelope connection, outer profile (with reference to the external seal sliding surface 222 in Fig. 5) and the anchoring hole portion 11 of annular piston body 22 can slide up and down
And it is tightly connected, the cavity connection between the first end and annular piston body 22 and primary seal 27 in hole 12 of pressurizeing.It pressurizes when passing through
When pressure-bearing medium is injected in hole 12 into the cavity, the lower end of the cavity is sealed up, and pressure-bearing medium can push annular piston body 22
It moves up.It is equipped with the groove body of annular in the outer profile of annular piston body 22, sealing element (such as O-shaped rubber can be installed in the groove body
Sealing ring etc.), so that the anchoring hole portion 11 of the outer profile of annular piston body 22 and casing casing 10 realizes sealing and slidably
Connection.In the present embodiment, the position corresponding with the inner surface of annular piston body 22 on the outer surface of anchoring mandrel body 21
The groove body for being also equipped with and can installing sealing element is set, thus also real between the Internal periphery of annular piston body 22 and anchoring mandrel body 21
Sealing and slidable connection are showed.It should be noted that the groove body for installing sealing ring can be set to opposite surface,
For example, it is also possible to which the inner surface in annular piston body 22 is arranged for installing the groove body of sealing ring, while removing setting and being anchored
The groove body of 21 outer profile of mandrel body.
With reference to Fig. 4 and Fig. 5, the lower end outside of annular piston body 22 is equipped with the first pressure slot 221.First pressure slot 221 with
The first end connection in pressurization hole 12.It is further preferred that position adjacent with the first pressure slot 221 in anchoring mandrel body 21 is also
Settable second pressure slot 213.First pressure slot 221 and the second pressure slot 213 form the annular chamber convenient for the injection of pressure-bearing medium
Body.It is appreciated that only identical effect also may be implemented in the second pressure of setting slot 213.
With reference to Fig. 4 and Fig. 6, being anchored slips 23 is four, and four anchoring slips 23 are around the center of anchoring mandrel body 21
Axis is laid.It is, of course, also possible to set other quantity, such as 3 or 5,6 for anchoring slips 23.
With reference to Fig. 4 and Fig. 7, the outer profile of slips activating member 24 is equipped with the excitation conical surface 241, excites the small end position of the conical surface 241
In close to anchoring 23 side of slips.Anchoring slips 23 have with the inner conical surface 233 that matches of the excitation conical surface 241, the excitation conical surface 241 with
Inner conical surface 233 contacts.Mandrel body 21 is concentric connect with anchoring by the first pilot hole 243 for slips activating member 24, so that slips is sharp
Outbox 24 can be moved along the central axial direction of anchoring mandrel body.
Above-mentioned annular piston body 22, anchoring slips 23 and the combination of slips activating member 24 form hydraulic excitation mechanism.This is hydraulic
The working principle of excitation mechanism are as follows: inject pressure-bearing to the first pressure slot 221 and/or the second pressure slot 213 by pressurization hole 12 and be situated between
When matter, pressure-bearing medium pushes annular piston body 22 to move up.The upper end of annular piston body 22 and the lower end of anchoring slips 23 offset, will
Power passes to anchoring slips 23, and anchoring slips 23 is pushed to move up.It is anchored during slips 23 moves up by the excitation conical surface 241
Impetus also can be gradually displaced outwardly along radial direction.The outside for being anchored slips 23 is equipped with toothed surface 232, toothed surface 232
It is corresponding with anchoring hole portion 11.Toothed surface 232 and anchoring 11 anchor of hole portion conjunction, realization anchoring mandrel body 21 and casing casing 10
Limitation anchoring 21 axis play of mandrel body is played the role of in anchoring.
With reference to Fig. 4 and Fig. 6, it is anchored mandrel body 21 and is equipped with multiple dovetail tangs 211, dovetail tangs 211 are along anchoring core
The central axial direction of axis body 21 extends, and dovetail tangs 211 match with the dovetail groove 231 on anchoring slips 23.Dovetail groove 231
Dovetail connecting structure is formed between dovetail tangs 211, and is had centainly at cooperation between dovetail groove 231 and dovetail tangs 211
Gap.Dovetail connecting structure can be avoided anchoring slips 23 and fall from anchoring mandrel body 21, while also allow to be anchored slips 23
The fine motion on the axially and radially direction of anchoring mandrel body 21, carries out anchoring movement.
With reference to Fig. 4, the outer profile for being anchored mandrel body 21 is equipped with additional confinement 212, additional confinement 212 and anchor hole
Portion 11 is tightly connected, and additional confinement 212 is between primary seal 27 and annular piston body 22；Pressurize hole 12 first end with it is auxiliary
The cavity helped between sealing 212 and annular piston body 22 connects.Pressure-bearing medium is injected into the cavity when passing through hole 12 of pressurizeing
When, anchoring mandrel body 21 generally forms piston structure, and pressure-bearing medium can apply downward pressure to anchoring mandrel body 21, this to
Under pressure can be improved the contact pressure at primary seal 27, the further sealing effect for improving primary seal 27.In addition to this,
The sealing that the anchoring hole portion 11 of additional confinement 212 and casing casing 10 is formed also improves anchoring mandrel unit 20 on the whole
With the sealing performance between casing casing 10.
Specifically, above-mentioned additional confinement 212 can be the annular seal groove being arranged on anchoring 21 outer profile of mandrel body
2121, and auxiliary seal ring 26 (such as O-shaped rubber seal) is provided in annular seal groove 2121.Preferably, above-mentioned annular
Seal groove 2121 is multiple.
With reference to Fig. 1, Fig. 2, Fig. 4 and Fig. 7, the top of casing casing 10 has flange arrangement, and is equipped at flange arrangement
Top wire hole 14.The setting direction of top wire hole 14 is the radial direction along casing casing 10, and jackscrew 40 is arranged in top wire hole 14, is pushed up
Silk 40 and 14 screw thread of top wire hole and sealed connection.The front end (i.e. towards the center position end of casing casing 10) of jackscrew 40 is equipped with
Conical top 41.The outer tip end of slips activating member 24 is equipped with the activating member male cone (strobilus masculinus) 245 to match with conical top 41.Jackscrew
40, slips activating member 24 and anchoring slips 23 are combined into first manual excitation mechanism.The work of first manual excitation mechanism
Principle are as follows: rotation 40 tail portion of jackscrew (outside for being exposed to casing casing 10), the conical top 41 of 40 front end of jackscrew, which squeezes, to swash
Male cone (strobilus masculinus) is sent out, moves down slips activating member 24 along the axial direction of anchoring mandrel body 21, swashing on slips activating member 24
The inner conical surface 233 that the hair conical surface 241 squeezes anchoring slips 23 is moved radially outward anchoring slips 23, to realize anchoring.
With reference to Fig. 4 and Fig. 7, the inside top of slips activating member 24 is equipped with activating member internal taper hole 242, is anchored mandrel unit 20
It further include clamp nut disk 25, clamp nut disk 25 and the top of anchoring mandrel body 21 are spirally connected, and the outside of clamp nut disk 25 is set
There is the tapered portion 251 to match with activating member internal taper hole 242, the upper top surface of clamp nut disk 25 is uniformly distributed there are multiple reinforcing holes
252, which can be threaded hole or unthreaded hole.Slips activating member 24 passes through the second pilot hole in it
244 with clamp nut disk 25 is concentric connect.Clamp nut disk 25, slips activating member 24 and anchoring slips 23 form second manually
Excitation mechanism.The working principle of second manual excitation mechanism are as follows: refer to Fig. 9, utilize the reinforcing hole of top surface on clamp nut disk 25
252, it is rotatably compressed using auxiliary tool (such as extension bar 70, bolt etc., can be threadedly coupled using bolt with reinforcing hole 252)
Nut plate 25, the tapered portion 251 of clamp nut disk 25 squeeze the activating member internal taper hole 242 on slips activating member 24, push slips
Activating member 24 moves down, and slips activating member 24, which moves down, can equally excite anchoring slips 23 to realize anchoring mandrel unit 20 and casing head
Anchoring movement between shell 10.
To sum up, hydraulic excitation mechanism is formd on composite drive mandrel anchor sleeve head of the invention, can also be formed
One manual excitation mechanism and the second manual excitation mechanism, each excitation mechanism, which can both work independently, realizes swashing for anchoring slips 23
Hair can also be applied in combination according to scene needs.The casing head can satisfy the suspension of mandrel hanger, avoid tubing string play,
Increase the stability and reliability of casing head.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modification, equivalent replacement and simple modifications etc., should all be included in the protection scope of the present invention in content.
Claims (10)
1. a kind of composite drive mandrel anchor sleeve head characterized by comprising
Casing casing (10) has vertically arranged inner hole, which has anchoring hole portion (11) and cone hole part (13), described
Anchoring hole portion (11) is located at the upside of the cone hole part (13), and the big end of anchoring hole portion (11) and the cone hole part (13)
Connection；Be additionally provided on the side wall of described sleeve pipe casing (10) pressurization hole (12), it is described pressurization hole (12) first end with it is described
It is anchored hole portion (11) connection, the second end of pressurization hole (12) extends to the outside of described sleeve pipe casing (10)；It is described to add
The second end of pressure hole (12) is equipped with check valve (30)；And
It is anchored mandrel unit (20), including is anchored mandrel body (21) and is from top to bottom sequentially sheathed on the anchoring mandrel body
(21) slips activating member (24), anchoring slips (23) and annular piston body (22) on the outside of, the anchoring mandrel body (21) can
It rests upon close in being equipped with master on the cone hole part (13) and in the junction of anchoring mandrel body (21) and the cone hole part (13)
It seals (27)；The annular piston body (22) can be installed between the anchoring mandrel body (21) and the anchoring hole portion (11)
In annular space, also, the Internal periphery of the annular piston body (22) can slide up and down and close with the anchoring mandrel body (21)
Envelope connection, the outer profile of the annular piston body (22) can be slided up and down and are tightly connected with the anchoring hole portion (11)；It is described
The first end of pressurization hole (12) is connect with the cavity between the annular piston body (22) and the primary seal (27)；The annular
The upper end of piston body (22) and the lower end of anchoring slips (23) offset；The anchoring slips (23) is multiple, and multiple institutes
The central axis that anchoring slips (23) is stated around anchoring mandrel body (21) is laid；The outer profile of the slips activating member (24)
Equipped with the excitation conical surface (241), the small end of the excitation conical surface (241) is located at close to anchoring slips (23) side；The anchoring
Slips (23) have with the inner conical surface (233) that matches of the excitation conical surface (241), the excitation conical surface (241) with it is described interior
The conical surface (233) contact；The outside of anchoring slips (23) is equipped with toothed surface (232), the toothed surface (232) and the anchoring
Hole portion (11) is corresponding.
2. composite drive mandrel anchor sleeve head according to claim 1, which is characterized in that the anchoring mandrel body (21)
It is equipped with multiple dovetail tangs (211), the dovetail tangs (211) are along the central axial direction for being anchored mandrel body (21)
Extend, the dovetail tangs (211) match with the dovetail groove (231) on anchoring slips (23).
3. composite drive mandrel anchor sleeve head according to claim 1, which is characterized in that the anchoring mandrel body (21)
Outer profile be equipped with additional confinement (212), the additional confinement (212) and the anchoring hole portion (11) sealed connection,
The additional confinement (212) is between the primary seal (27) and the annular piston body (22)；The pressurization hole (12)
First end connect with the cavity between the additional confinement (212) and the annular piston body (22).
4. composite drive mandrel anchor sleeve head according to claim 3, which is characterized in that the additional confinement
(212) it is equipped at least one annular seal groove (2121), is provided with sealing element in the annular seal groove (2121).
5. composite drive mandrel anchor sleeve head according to claim 1, which is characterized in that described sleeve pipe casing (10)
The upper uniformly distributed multiple jackscrews (40) for having radial penetration described sleeve pipe casing (10) side wall, the front end of the jackscrew (40) is set
There are conical top (41)；The outer tip end of the slips activating member (24) is equipped with the excitation to match with the conical top (41)
Part male cone (strobilus masculinus) (245).
6. composite drive mandrel anchor sleeve head according to claim 1, which is characterized in that the slips activating member (24)
Inside top be equipped with activating member internal taper hole (242), the anchoring mandrel unit (20) further includes clamp nut disk (25), described
It is spirally connected at the top of clamp nut disk (25) and the anchoring mandrel body (21), the outside of the clamp nut disk (25) is equipped with and institute
State the tapered portion (251) that activating member internal taper hole (242) matches.
7. composite drive mandrel anchor sleeve head according to claim 1, which is characterized in that the annular piston body (22)
Lower end outside be equipped with first pressure slot (221), it is described first pressure slot (221) and it is described pressurization hole (12) first end connect
It connects.
8. composite drive mandrel anchor sleeve head according to any one of claim 1 to 7, which is characterized in that the master
Sealing (27) includes the first sealing ring (271), the second sealing ring (272) and dead ring (273), first sealing ring (271)
Positioned at the upside of second sealing ring (272), the dead ring (273) is located at the downside of second sealing ring (272), institute
Dead ring (273) is stated to be spirally connected with the anchoring mandrel body (21).
9. composite drive mandrel anchor sleeve head according to claim 2, which is characterized in that the dovetail groove (231) with
There is gap at the cooperation of dovetail tangs (211).
10. composite drive mandrel anchor sleeve head according to claim 6, which is characterized in that the clamp nut disk
(25) upper top surface is uniformly distributed multiple reinforcing holes (252).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910162973.8A CN109736740B (en) | 2019-03-05 | 2019-03-05 | Composite driving mandrel anchoring casing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910162973.8A CN109736740B (en) | 2019-03-05 | 2019-03-05 | Composite driving mandrel anchoring casing head |
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| Publication Number | Publication Date |
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| CN109736740A true CN109736740A (en) | 2019-05-10 |
| CN109736740B CN109736740B (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910162973.8A Active CN109736740B (en) | 2019-03-05 | 2019-03-05 | Composite driving mandrel anchoring casing head |
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