CN102493774A - Universal rotatable setting releasing tool for packer or hanger - Google Patents

Abstract

The invention discloses a universal rotatable setting releasing tool for a packer or a hanger. The universal rotatable setting releasing tool consists of a setting releasing assembly and a connecting and sealing sleeve assembly of the packer or the hanger. The setting releasing assembly consists of a suspended rotary sealing sleeve assembly and an expansion sealing assembly. The tool is simple and reliable in structure and can be connected with the hanger or the packer with no need of a thread. The universal rotatable setting releasing tool disclosed by the invention can bear higher pull and press loads, can drive a tail pipe to rotate by use of a larger torsion, has a mechanical releasing mode and a hydraulic releasing mode, can be applicable to any one of the hanger and the packer which are set by hydraulic pressure, and can be recycled.

Description

The general rotatable releasing tool that sets of hanger packer

Technical field

The present invention relates to a kind of oil gas field completion and oil recovery gas production field, especially relate to the general rotatable releasing tool that sets of a kind of hanger packer.

Background technology

At present; In the oil gas field completion process especially in horizontal well, the extended reach well completion process; Often utilize the hanger rotation to be lowered to tail pipe, perhaps need a part of flow string be suspended in the sleeve pipe with top packer in process of production, the tubing string that is lowered to is after accomplishing hanger seat extension or packer setting; Need put aside from hanger or packer, running string proposes well head.But for various dissimilar hangers or packer, general way is to adopt different releasing gadgets, and releasing gadget often is designed to one with hanger or packer, in case the back releasing gadget that fulfils assignment is generally passed into disuse.And need to carry higherly draw, compressive load and the hanger that can be enough drive the tail pipe rotation and have a multiple mode of giving up than high pulling torque not only costs an arm and a leg, mechanism is complicated, processing assembly and adjustment complex process; And versatility is poor; Be prone to during following well operations lose efficacy, thereby limited promoting the use of of this hanger of giving up.

Summary of the invention

To the give up process characteristic of tubing string of oil gas field completion, the present invention provides general the setting of recyclable recycling of a kind of hanger packer to give up.

For this reason, technical scheme of the present invention is following:

The general rotatable releasing tool that sets of a kind of hanger packer, it sets the assembly of giving up by suspension and is connected the sealing shroud assembly with the hanger packer and forms, and said suspension sets the assembly of giving up and is made up of the suspension rotational release assembly and the envelope seal assembly that rises.

Said suspension rotational release assembly comprises top connection (1), central tube (2), urceolus (3) and lower contact (17), and said top connection (1) is threaded with central tube, and central tube (2) is threaded with lower contact (17); Urceolus (3) is enclosed within outside the central tube (2), and it is corresponding with the stepped step of urceolus 3 that top connection (1) outside is provided withstepped step 18, and urceolus (2) is fixedly connected through shear pin (4) with top connection (1); Go up formation porose (5) at urceolus (2), be provided with spring (6) in the space between urceolus (2) and central tube (2), be provided with baffle ring (7) in spring (6) lower end; One moment of torsion lock dog (9) is fixed on the baffle ring (7) with hold-down screw (8), and baffle ring (7) is embedded in the groove (19) and can slides up and down, and piston (11) is fixed on the central tube (2) through shear pin (10); Piston (11) is connected with piston bush (48) with screw thread; Lock ring (47) is enclosed within piston bush (48) lower inside, and piston bush (48) is when moving up, through moving on lock dog (47) the drive support set (53); Support set (53) is fixed on the central tube (2) with shear pin (46); Between support set (53) and the central tube (2) lock ring (51) is arranged, be formed with gingival cyst of mucous gland in the newborn tooth (45) at the correspondence position of central tube (2), lock ring (51) is connected through gingival cyst of mucous gland in the newborn tooth (45) with central tube (2); Make lock ring (51) can only on move and can not move down; Lock dog (15) is fixing through connecting rod (13) and connecting rod cover (57), and slip ring (54) is threaded with support set (53), and guide rod (56) is welded on the connecting rod cover (57); Spring (55) is enclosed within outside the guide rod (56) and is pressed in the slip ring (54), for stretching out of lock dog (15) provides resiliency supported.

Between said piston bush (48) and central tube (2), be formed with slipper seal structure and hydraulic packing structure; Said slipper seal structure comprises the 1st rigid support ring (32), the 1st flexible support ring (33), the 1st sealing ring (34), the 2nd flexible support ring (35) and the 2nd rigid support ring (36) that sets gradually; Go up formation porose (37) at urceolus (2); When (37) when suppressing, said slipper seal structure promotes said piston (11) and moves up from the hole; Said hydraulic packing structure comprises the 1st lock ring (38), the 3rd rigid support ring (39), the 3rd flexible support ring (40), the 2nd sealing ring (41), the 4th flexible support ring (42), the 4th rigid support ring (43) and the 2nd lock ring (44) that sets gradually.

Seal head (21), top connection (23) and lower contact (31) on the said envelope seal assembly that rises; The said seal head (21) of going up is threaded with suspension rotational release assembly lower contact (17), and last seal head (21) is provided with sealing ring (22), and the diameter of sealing ring (22) should mate with latus rectum in hanger or the packer; Top connection (23) is threaded with last seal head (2) 1; 1st, 2 leather cups (25,28) are installed in outside the top connection (23), and the rim of a bowl up, latus rectum coupling in the external diameter of leather cup (25), leather cup (28) and hanger or the packer; Form in the top connection porose (24); The sealing of hole that rises of hanger or packer is aimed in hole (24), and hanger or packer are carried out the seat extension or the envelope that rises, and ball seat (30) is through in the lower contact (31) that is threaded in the said envelope seal assembly that rises.

Said hanger packer connects the sealing shroud assembly and comprises upper seal bore (58) and lower seal tube (60); The lower end of lower seal tube (60) forms lower contact (63); Lower contact (63) is connected with hanger or packer with thread connecting mode, and lower seal tube (60) inboard is provided with draw-in groove (62), and the width of draw-in groove (62) is identical with the width of lock dog (15); The supporting surface of draw-in groove (61) coincide with seating surface (14) angle of lock dog (15); The interior latus rectum of lower seal tube (60) is identical with the maximum outside diameter of lower contact (17), and lower seal tube (60) is provided with torsional channel (64), and its width is identical with the width of moment of torsion lock dog (9).

Packer releasing tool of the present invention need be through hanger or the packer of being threaded; Can carry higher draw, compressive load; Can enoughly drive the tail pipe rotation than high pulling torque; Have machinery and two kinds of modes of giving up of hydraulic pressure, can be suitable for any hanger or packer through hydraulic setting, and recyclable recycling.It is simple and reliable for structure; Frame for movement is independent, and independent assembling only need be according to various casing size designs instrument series of the present invention; Need be according to hanger or packer construction size design instrument series; Do not influence hanger or packer original structure, on-the-spot and hanger or the direct socket connection of packer, easy to be reliable.

Description of drawings

Fig. 1 is the rotatable structural representation that sets the assembly of giving up of the present invention;

Fig. 2 a is the amplification assumption diagram of suspension rotational release assembly among Fig. 1;

Fig. 2 b rises among Fig. 1 to seal the amplification assumption diagram of seal assembly;

Fig. 3 is the enlarged drawing of I portion among Fig. 2 a;

Fig. 4 is the enlarged drawing of II portion among Fig. 2 a;

Fig. 5 is the rotatable structural representation that sets hanger packer connection sealing shroud assembly in the releasing tool of the present invention.

Among the figure: 1. top connection, 2. central tube, 3. urceolus, 4. shear pin, 5. hole, 6. spring, 7. baffle ring, 8. hold-down screw, 9. moment of torsion lock dog, 10. shear pin; 11. piston, 12. holes, 13. connecting rods, 14. supporting surfaces, 15. lock dogs, 16. guiding inclines, 17. lower contacts, 18. steps, 19. grooves; 20. the conical surface, seal head on 21., 22. sealing rings, 23. top connections, 24. holes, 25. leather cups, 26. holder cups, 27. spacer rings, 28. leather cups; 29. the holder cup, 30. ball seats, 31. lower contacts, 32. rigid support ring, 33. flexible support rings, 34. sealing rings, 35. flexible support rings, 36. rigid support ring, 37. holes; 38. lock ring, 39. rigid support ring, 40. flexible support rings, 41. sealing rings, 42. flexible support rings, 43. rigid support ring, 44. lock rings, 45. gingival cyst of mucous gland in the newborn teeth, 46. shear pins; 47. lock ring, 48. piston bushs, 49. holes, 50. holes, 51. lock rings, 52. holes, 53. support sets, 54. slip rings, 55. springs; 56. guide rod, 57. connecting rod covers, 58. upper seal bores, 59. upper surfaces, 60. lower seal tubes, 61. supporting surfaces, 62. draw-in grooves, 63. lower contacts, 64. torsional channels.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is described further.

The general rotatable releasing tool that sets of hanger packer of the present invention mainly sets the assembly of giving up by suspension and is connected sealing shroud assembly (hereinafter to be referred as connecting the sealing shroud assembly) with the hanger packer and forms.

Like Fig. 1～shown in Figure 4, suspension sets the assembly of giving up and mainly is made up of the suspension rotational release assembly and the envelope seal assembly that rises.

Referring to Fig. 2 a, thetop connection 1 of suspension rotational release assembly is threaded withcentral tube 2, andcentral tube 2 is threaded with lower contact 17.Urceolus 3 is enclosed within outside thecentral tube 2, and it is corresponding with the stepped step of urceolus 3 thattop connection 1 outside is provided with steppedstep 18, and urceolus 3 is fixedly connected through shear pin 4 with top connection 1.On urceolus 3, form porosely 5, be provided with spring 6 in the space between urceolus 3 andcentral tube 2, be provided withbaffle ring 7 in spring 6 lower ends.Moment of torsion lock dog 9 usefulness hold-down screws 8 are fixed on thebaffle ring 7, andbaffle ring 7 is embedded in thegroove 19 and can slides up and down.Piston 11 is fixed on thecentral tube 2 through shear pin 10.

Referring to Fig. 4, piston 11 usefulness screw threads are connected withpiston bush 48, andlock ring 47 is enclosed withinpiston bush 48 lower inside, andpiston bush 48 moves up, and can drive on the support set 53 throughlock dog 47 and move, and do not move down but can not drive support set 53.Support set 53 usefulness shear pins 46 are fixed on the central tube 2.Between support set 53 and thecentral tube 2lock ring 51 is arranged, be formed with gingival cyst of mucous gland in thenewborn tooth 45 at the correspondence position ofcentral tube 2,lock ring 51 is connected through gingival cyst of mucous gland in thenewborn tooth 45 withcentral tube 2, promptly lockring 51 can only on move and can not move down, thereby guarantee support set 53 can only on move and can not move down.It is fixing with connectingrod cover 57 that lockdog 15 passes through connectingrod 13, andslip ring 54 is threaded with support set 53, and guiderod 56 is welded on the connectingrod cover 57, andspring 55 is enclosed within outside theguide rod 56 and is pressed in theslip ring 54, for stretching out oflock dog 15 provides resiliency supported.

The enlarged drawing of I part is seen Fig. 3 among Fig. 2 a.Compound mode through the 1st rigid support ring the 32, the 1st flexible support ring the 33, the 1st sealing ring the 34, the 2nd flexible support ring the 35, the 2ndrigid support ring 36; Can betweenpiston bush 48 andcentral tube 2, form the slipper seal structure, 37 suppress and can promote piston 11 and move up from the hole.The compound mode of the 1st lock ring the 38, the 3rd rigid support ring the 39, the 3rd flexible support ring the 40, the 2nd sealing ring the 41, the 4th flexible support ring the 42, the 4th rigid support ring the 43, the2nd lock ring 44; Can betweenpiston bush 48 andcentral tube 2, form hydraulic packing, the1st lock ring 38 prevents thatpiston bush 48 from moving down.

Referring to Fig. 2 b, thelast seal head 21 of the envelope that rises seal assembly is threaded with suspension rotational release assemblylower contact 17, andlast seal head 21 is provided with sealingring 22, and the diameter of sealingring 22 should mate with latus rectum in hanger or thepacker.Top connection 23 is threaded withlast seal head 21; 1st, 2 leather cups 25,28 are installed in outside thetop connection 23; And the rim of a bowl is up, the external diameter ofleather cup 25,leather cup 28 also with hanger or packer in latus rectum coupling, utilize sealingring 22 andleather cup 25,leather cup 28 to rise and form sealing between the sealing of hole at hanger or packer; The sealing of hole that rises of hanger or packer is aimed inhole 24, can carry out the seat extension or the envelope that rises to hanger orpacker.Ball seat 30 is through being threaded in the envelope seal assemblylower contact 31 of rising.

Referring to Fig. 5, the hanger packer connects the sealing shroud assembly and comprises upper seal bore 58 and lower seal tube 60.The lower end oflower seal tube 60 formslower contact 63, andlower contact 63 is connected with hanger or packer with thread connecting mode.Lower seal tube 60 inboards are provided with draw-ingroove 62, and the width of draw-ingroove 62 is identical with the width oflock dog 15, and the supportingsurface 61 of draw-in groove coincide with seating surface 14 angles oflock dog 15, and the interior latus rectum oflower seal tube 60 is identical with the maximum outside diameter of lower contact 17.Lower seal tube 60 is provided withtorsional channel 64, and its width is identical with the width of moment of torsion lock dog 9.

The present invention is when insertinglower seal tube 60; Receive the restriction ofupper surface 59 internal diameters, form the clamping force to lockdog 15,lock dog 15 overcomes the elastic force withdrawal ofspring 55; Continue to insert; Whenlock dog 15 arrived draw-ingrooves 62,lock dog 15 lost outer chucking power, under the acting in conjunction of the active force ofspring 55 and guidingincline 16, stretched out.This moment, theconical surface 20 of the present invention was just to withstanding on theend face 59; Moment of torsion lock dog 9 just can insert snap fit withupper surface 59 andtorsional channel 64; If moment of torsion lock dog 9 andtorsional channel 64 misalignments; Rotating to an angle a little gets final product, and moment of torsion lock dog 9 inserts in thetorsional channel 64 under the effect of spring 6.At this moment, the present invention can't extract out inlower seal tube 60, thereby has realized docking of the present invention and hanger.

This moment, lockdog 15 was stuck in the draw-ingroove 62 of lower seal tube, thereby hanger and tail pipe total weight are hung on the releasing tool of the present invention, can bear and put forward load.During this instrument of pressing down, theconical surface 20 receives stopping ofend face 59, thereby set down weight has been delivered on hanger and the tail pipe.When dextrorotation is of the present invention; Step 18 transfers torque on the urceolus 3, and groove 19 transfers torque on the moment of torsion lock dog 9, and moment of torsion lock dog 9 drivestorsional channel 64 rotations; Thereby realized the rotation of hanger and tail pipe, the maximum that its maximum rotation torque can reach the releasing tool urceolus allows torsion strength.

Setting gives up with hydraulic pressure adopts different pressure differential, directly in instrument of the present invention, suppresses and can realize the seat envelope.

Continuation raising pressure carries out hydraulic pressure gives up, and hydraulic pressure is given up and can be adopted the tail pipe tubing string to build the pressure or stuff, and its basic principle is identical.For stuff, utilizeball seat 30 to build the pressure, hydraulic pressure affacts on the piston 11 throughhole 37; Piston 11 moves up and cuts off shear pin 10 andshear pin 46; And drive on thepiston bush 48 and move, and then drive and move on thelock dog 15 and withdraw, carry instrument of the present invention on this moment and can realize giving up.Lock ring 51 cooperates with gingival cyst of mucous gland in thenewborn tooth 45, can only on move and can not move down, guarantee that lockdog 15 can't stretch out once more, guarantees to give up.

Machinery is given up to adopt and is transferred weight of the present invention tolower seal tube 60,lock dog 15 is no longer born draw load, throughtop connection 1 left-handed 1/4 circle; Cut off shear pin 4, top connection outsidestep 18 falls from the step of urceolus, thereby makestop connection 1 drivecentral tube 2 andlower contact 17 whereabouts; Lockdog guiding incline 16 loses support; On carry instrument of the presentinvention lock dog 15 is shunk, break away from the constraint oflower contact 17, realize giving up.

Claims (5)

1. general rotatable releasing tool that sets of hanger packer; It is characterized in that: set the assembly of giving up by suspension and be connected the sealing shroud assembly with the hanger packer and form, said suspension sets the assembly of giving up and is made up of the suspension rotational release assembly and the envelope seal assembly that rises.

2. the general rotatable releasing tool that sets of hanger packer according to claim 1 is characterized in that: said suspension rotational release assembly comprises top connection (1), central tube (2), urceolus (3) and lower contact (17), and said top connection (1) is threaded with central tube; Central tube (2) is threaded with lower contact (17), and urceolus (3) is enclosed within outside the central tube (2), and it is corresponding with the stepped step of urceolus 3 that top connection (1) outside is provided with stepped step 18; Urceolus (2) is fixedly connected through shear pin (4) with top connection (1), goes up at urceolus (2) and forms porose (5), is provided with spring (6) in the space between urceolus (2) and central tube (2); Be provided with baffle ring (7) in spring (6) lower end, a moment of torsion lock dog (9) is fixed on the baffle ring (7) with hold-down screw (8), and baffle ring (7) is embedded in the groove (19) and can slides up and down; Piston (11) is fixed on the central tube (2) through shear pin (10), and piston (11) is connected with piston bush (48) with screw thread, and lock ring (47) is enclosed within piston bush (48) lower inside; Piston bush (48) is when moving up; Through moving on lock dog (47) the drive support set (53), support set (53) is fixed on the central tube (2) with shear pin (46), between support set (53) and the central tube (2) lock ring (51) is arranged; Correspondence position at central tube (2) is formed with gingival cyst of mucous gland in the newborn tooth (45); Lock ring (51) is connected through gingival cyst of mucous gland in the newborn tooth (45) with central tube (2), make lock ring (51) can only on move and can not move down, lock dog (15) is fixing through connecting rod (13) and connecting rod cover (57); Slip ring (54) is threaded with support set (53); Guide rod (56) is welded on the connecting rod cover (57), and spring (55) is enclosed within outside the guide rod (56) and is pressed in the slip ring (54), for stretching out of lock dog (15) provides resiliency supported.

3. the general rotatable releasing tool that sets of hanger packer according to claim 2; It is characterized in that: between said piston bush (48) and central tube (2), be formed with slipper seal structure and hydraulic packing structure; Said slipper seal structure comprises the 1st rigid support ring (32), the 1st flexible support ring (33), the 1st sealing ring (34), the 2nd flexible support ring (35) and the 2nd rigid support ring (36) that sets gradually; Go up formation porose (37) at urceolus (2); When (37) when suppressing, said slipper seal structure promotes said piston (11) and moves up from the hole; Said hydraulic packing structure comprises the 1st lock ring (38), the 3rd rigid support ring (39), the 3rd flexible support ring (40), the 2nd sealing ring (41), the 4th flexible support ring (42), the 4th rigid support ring (43) and the 2nd lock ring (44) that sets gradually.

4. the general rotatable releasing tool that sets of hanger packer according to claim 1; It is characterized in that: seal head (21), top connection (23) and lower contact (31) on the said envelope seal assembly that rises; The said seal head (21) of going up is threaded with suspension rotational release assembly lower contact (17), and last seal head (21) is provided with sealing ring (22), and the diameter of sealing ring (22) should mate with latus rectum in hanger or the packer; Top connection (23) is threaded with last seal head (2) 1; 1st, 2 leather cups (25,28) are installed in outside the top connection (23), and the rim of a bowl up, latus rectum coupling in the external diameter of leather cup (25), leather cup (28) and hanger or the packer; Form in the top connection porose (24); The sealing of hole that rises of hanger or packer is aimed in hole (24), and hanger or packer are carried out the seat extension or the envelope that rises, and ball seat (30) is through in the lower contact (31) that is threaded in the said envelope seal assembly that rises.

5. the general rotatable releasing tool that sets of hanger packer according to claim 1; It is characterized in that: said hanger packer connects the sealing shroud assembly and comprises upper seal bore (58) and lower seal tube (60); The lower end of lower seal tube (60) forms lower contact (63); Lower contact (63) is connected with hanger or packer with thread connecting mode, and lower seal tube (60) inboard is provided with draw-in groove (62), and the width of draw-in groove (62) is identical with the width of lock dog (15); The supporting surface of draw-in groove (61) coincide with seating surface (14) angle of lock dog (15); The interior latus rectum of lower seal tube (60) is identical with the maximum outside diameter of lower contact (17), and lower seal tube (60) is provided with torsional channel (64), and its width is identical with the width of moment of torsion lock dog (9).

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