CN104471181B - It is arranged to device tube rod being attached on tubular body - Google Patents

Abstract

The attachment arrangement of the element (1) being arranged on downhole tubular body (3), the end (11) of the sleeve (1a) being wherein disposed around a part for tubular body (3) is provided with attachment (13), this attachment includes at least one clamping element (1312,1312 '), and this clamping element is arranged by abutment surface (1315) and adjoins and radial displacement against the conical adjacency section (142) around adapter sleeve (14).

Description

It is arranged to device tube rod being attached on tubular body

Technical field

The present invention relates to the attachment of a kind of tube rod (pipe stem) for being arranged on downhole tubular body Device.

Background technology

In oil and gas industry, the element being attached to downhole tubular body (such as production tube) is used for multiple Purpose.One example of such element is located in so-called regulator or the righting of the outside of tubular body Device.The purpose of regulator can be to ensure that downhole unit is stably positioned in the center of the tubular body of surrounding.Example As, the regulator on sleeve pipe is used as guaranteeing the distance piece of radial space sufficient between two sleeve pipes, with Informal water mud introduces in a satisfactory manner.For other downhole unit, regulator can be used for reducing footpath To movement, such as, particularly with such as the elongated units of BHA (BHA).In one embodiment, Regulator is fixedly disposed on the jacket surface of relatively short mandrel and is attached to there, in necessity When this relatively short mandrel should be equipped with on the tubular body of regulator slide.Regulator can present Various shape；Straight line stabilizer component and spiral stabilizer element are all well-known on market.This Plant anti-roll bar assembly (using the term of " shaped stabilizer tube " in further illustrating) can be arranged on by floating ground On the body of down-hole, i.e. they are only axially fixed in downhole unit so that shaped stabilizer tube can be in downhole unit Rotate, and therefore static when downhole unit rotates, and axial restraint is by means of shrinking, press, screwing There is provided etc. the stop sleeve being attached to downhole unit.In other are applied, shaped stabilizer tube is with rotating stiff Mode is fixed to downhole unit, in order to along with downhole unit rotates.Be attached with as above to only The mode that moving sleeve is identical is implemented.This attachment may need the instrument of large and expensive, some attachment sides Method (such as pressing) often causes the permanent deformation of the contact surface of relevant downhole unit.

Regulator and centralizer are also considered as pipeline section, stable (regulator succedaneum (stabilizer sub)) at needs Time be arranged on tubing string by being arranged on the end of pipeline section, threaded portion is corresponding to the threaded portion of adjacent tubes. The present invention is not directed to regulator and the centralizer of this form.

Other examples being attached to the element of downhole tubular body are needed to be the sand filter in production tube and set Put the conduit for transmission of control signals, hydraulic fluid etc. in the outside of production tube.

Summary of the invention

It is an object of the invention to make up or reduce at least one defect of the prior art, or provide at A kind of replacement scheme useful to prior art.

This purpose is real by the feature described in detail in following description and appended claims Existing.

The end of tube rod (each sleeve of the end of adjacent tube rod) arranges attachment.Attachment includes Clamping section, clamping section extends from the end of tube rod (each stop sleeve) and is provided with one or more clamping unit Part, this clamping element be arranged in radial direction towards around tubular body move.Clamping element can be The flange stretched out along the axial direction of sleeve, clamping section is divided into lobe.Slit is preferably parallel, allusion quotation (extension) is in axial direction advanced in type ground.Alternatively, clamping element can form loose clamping element, this pine The clamping element dissipated is arranged in the recess of clamping section.Clamping element inward displacement in recess is preferably subject to To limiting, typically limited by the extension of the respective ledge can being shelved on the lateral edges of recess.External lock Determining portion arrange adjacent to clamping section and be arranged on the jacket surface of tube rod (each stop sleeve), it is set Become by adapter sleeve around.

In one embodiment, sticking department includes external thread part, and this external thread part is arranged to receive and is formed Adapter sleeve for nut.Nut is provided with substantially connecing from the internal thread part form of the end of nut extension Conjunction portion.

In another embodiment, adapter sleeve is by grabbing card system bond attachments portion, such as by being provided with one Individual or multiple outer sticking departments grabbing card division, each outer grab card division through attachment by the separate region of slit Circumferentially direction extends, the attachment of slit penetrating component, is divided into clamping section narrow of lobe as described above Seam.In the inside of sticking department, attachment presents recess, and the diameter of this recess is more than tube rod (each support set Cylinder) the diameter of adjacent portions of centre bore, this recess extends to outside the axial range of sticking department.Attachment Portion and corresponding inner fovea part separate permission when adapter sleeve moves on sticking department, sticking department by Interior pressing, adapter sleeve is provided with one or more joint element inwardly stretched out in this embodiment.One Or multiple card division of grabbing is typically provided with the first conical side of the end towards clamping section, such as, have Pitch angle in the range of 20 °-35 °.The second relative side forms abutment surface, such as, be perpendicular to clamping section The upright shoulder of central axis.Correspondingly, the one or more joint elements on sleeve can have with Grab the cross section that the cross section of card division is complementary so that when radially compressing sticking department, joint element The sliding, until joint element on cone from the outside side of cone grabbing card division to medial surface Vertically support the adjacent abutment surface grabbing card division by it and grab card division described in engaging below.Real at this Executing in example, joint element can be the most similar shape the most axially spaced.Sticking department can allusion quotation It is provided with the some card divisions of grabbing being axially spaced, the joint unit of axially spaced-apart spacing corresponding joints sleeve type Distance between part.Alternatively, joint element can be made up of one or more claws.

At the neighbouring female thread of adapter sleeve or be provided with the region of joint element cone adjacency section is set, make This cone adjacency section presents the diameter reduced from the direction of threaded portion.

By shift joint sleeve on tube rod (each stop sleeve), the cone of adapter sleeve adjoins It is sleeved that portion forces one or more clamping elements of clamping section the most inwardly to adjoin placement in succession Tubular body.Joint between the screw thread that adapter sleeve is obtained by swivel joint sleeve or pass through fitting sleeve One or more joints grabbed between card division and one or more joint element of obtaining of axial displacement of cylinder and It is axially fixed on sleeve.If the jacket surface of tubular body has circular cross section, then when some folders When tight element is distributed in the whole circumference of sleeve, clamping element will against tubular body equably.According to this The tube rod (each stop sleeve) that invention is formed can be clamped to any part of the jacket surface of tubular body, And do not make jacket surface deform.

Lip-like clamping element preferably has (i.e. towards its free end) away from the direction of external thread part The thickness successively decreased, this is because inside contact surface is mild cone, in order in operating position shape Become best may the adjoining with tubular body.Correspondingly, single clamping element is provided with corresponding to adapter sleeve The conical abutment surface of conical adjacency section.

For stoping the adapter sleeve of nut form to be outwarded winding during tubular body rotates, hand of spiral and tubular body Normal direction of rotation be favourable on the contrary.

Adapter sleeve for making nut form is more firm, and nut can include fastening system, and nut is provided with locking Portion, this sticking department includes one or more projection inwardly stretched out, and this projection is arranged to joint and is set Latch groove in the external thread part of tube rod (each stop sleeve).If tube rod (each stop sleeve) sets Having some latch grooves that the axial direction along tube rod (each stop sleeve) is arranged abreast, this can be advantage. Thus, nut can be engaged by locking tube rod (each stop sleeve) at some axial locations.The locking of adapter sleeve Portion can be (i.e. the segmentation) of continuous print or interruption.

Fastening system has alternatively corresponding to the above-mentioned design grabbing card system.

Tube rod can form base portion, the jacket surface of base portion secures one or more function element, such as Stablize or centring element, typically to stretch out from the circumference of mandrel and to be evenly distributed in the circumference of tube rod The form of rib.The sleeve of elongated tubular rod type can be provided with two ends with tube rod and form the attachment of entirety Portion.Stop sleeve also can be used separately with this tube rod, but is used as limiting the axially-movable of tube rod and permitting Permitted tube rod and be provided with on the tubular body of described function element the end abutment part rotated freely.

The present invention is not excluded for using identical technical scheme (either temporarily or permanently to put to position other elements Put) make them stretch out from the circumference of downhole tubular body.Tube rod (each stop sleeve) can be provided with for function The attachment element of element, these function element extend along tubular body, such as carry electrical signals or stream The conduit of body, typically hydraulic pipe.The simplest form of attachment element can be projecting pin or tube rod (respectively Stop sleeve) in recess.

In first scheme, the present invention relates more specifically to a kind of for being arranged on downhole tubular body The attachment arrangement of tube rod, this tube rod is provided with one or more radially-protruding function element, is wherein set For being provided with attachment around the end of the tube rod of a part for tubular body or the stop sleeve of adjacent tube rod, should Attachment includes at least one clamping element, and this clamping element is arranged by abutment surface and around spiral shell Female conical adjacency section is against adjoining and radial displacement, it is characterised in that the outer sticking department of this end can Be formed as some and grab card division, grab card division and extend along the circumferential direction of the jacket surface of attachment and be arranged to The corresponding joint element inwardly stretched out on junction joint sleeve, the circumferential scope grabbing card division is limited by slit, This slit at least penetrates sticking department and substantially along the axial direction extension of attachment.

Clamping element is formed as the lip in axial direction stretched out from sticking department.

Lip can have the thickness being gradually reduced along the direction away from outer sticking department, because to inner contact surface It is conical.

Clamping element is optionally formed as the bending clamping element being arranged in the recess of end.

One or more lateral edges of recess can form lug, and this lug is arranged to reception and is arranged on folder Corresponding back-up ring on tight element.

Attachment can be provided with inner fovea part, and this inner recesses portion of being locked surrounds and has the axle more than sticking department To the axial range of scope.

The jacket surface of neighbouring external thread part can be provided with at least one latch groove, and this latch groove is arranged to connect Receiving complementary junction surface, this junction surface is provided on adapter sleeve inwardly stretches out and has one with adjacency section Set a distance.Junction surface can be continuous or discontinuous.

The pitch direction of threaded portion can be contrary with the normal direction of rotation of tubular body.

Tubular body can be sleeve pipe, bushing pipe or BHA.

Sticking department is formed as being arranged to the threaded portion of the internal thread part of junction joint sleeve, and sticking department can Grabbing card division including at least one, this is grabbed card division and along the circumferential direction extension of the jacket surface of attachment and is set It is set on junction joint sleeve the corresponding joint element inwardly stretched out, grabs the circumferential scope of card division by slit Limit, the sticking department of this slit at least penetrating component substantially along the axial direction extension of attachment.

Tube rod or stop sleeve can be provided with one or more function element, function element select free stable element, Centring element (centralizing element, righting element), sand screen and the group of cable clip.

Tube rod or stop sleeve can be provided with the one or more anchor points for function element.

In second scheme, the present invention relates more specifically to a kind of tubing string including some tubular bodies, its Being characterised by, one or more tubular bodies are provided with at least one mandrel, and this mandrel is filled by above-mentioned attachment Putting and be fixed to described tubular body, this mandrel is releasably engaged a part for described tubular body.

Accompanying drawing explanation

In the following, it is described that the example of the preferred embodiment presented in the accompanying drawings, in the accompanying drawings:

Fig. 1 shows and the tube rod axially fixed according to two stop sleevees of the present invention, in order to reveal Going out, stop sleeve has been pulled out slightly the end face of mandrel, and tube rod is provided with and is attached to external jacket surface Regulator；

Fig. 2 shows the axonometric chart of according to the present invention two stop sleevees forming entirety with tube rod；

Fig. 3 shows the axial section of attachment with greater proportion, and wherein adapter sleeve is formed as part It is tightened to the nut of attachment；

Fig. 4 a shows the axial section of the alternative embodiment of attachment with greater proportion；

Fig. 4 b shows the radial section IV-IV according to Fig. 4 a；

Fig. 5 shows axially cuing open of a section of the alternative embodiment of attachment and nut with greater proportion Face, the latch groove that wherein sticking department of the end of nut is engaged with in mandrel；

Fig. 6 shows attachment and is provided with the axial section of the adapter sleeve grabbing card system, its center tap What the joint element inwardly stretched out on sleeve was moved in bond attachments portion grabs card division accordingly；

Fig. 6 a shows the section of the amplification grabbing card system；And

Fig. 7 shows the view corresponding with Fig. 6, but joint element is fully engaged with grabbing card division.

Detailed description of the invention

In the drawings, reference 1 represents the set of the elongated tube rod form being provided with some function element 2 Cylinder, function element 2 is shown as the ribbed that the jacket surface 12 from tube rod 1 stretches out in fig. 1 and 2 Stable element.Tube rod 1 is arranged to (the most schematic around tubular body 3 releasedly Be shown as sleeve pipe) a part.In FIG, tube rod 1 is solid by two single stop sleeve 1a Fixed, such as when expectation should rotate with the tube rod 1 of function element 2 on tubular body 3, this be because of Two ends 11 that against tube rod 1 for stop sleeve 1a in the way of axially support are placed, in this enforcement In example, two ends of tube rod have straight end face 111.Stop sleeve 1a is attached in the way of rotating stiff Receive tubular body 3 so that tube rod 1 is freely rotatable.In fig. 2, the attachment of stop sleeve 1a Device forms entirety with two ends 11 of tube rod 1 so that tube rod 1 is attached in the way of rotating stiff To tubular body 3.

In the following description, the attachment arrangement about stop sleeve 1a is described, but at stop sleeve 1a constitutes during the elongated tube rod 1 being provided with the one or more attachment arrangement the most effective.

The end 11 of stop sleeve 1a is provided with attachment 13, should in first embodiment (seeing Fig. 3) Attachment 13 includes clamping section 131, and this clamping section 131 is configured to be close to tubular body with hold mode 3.Clamping section 131 is by some the lip-like clamping elements 1312 in axial direction stretched out from stop sleeve 1a Being formed, clamping element 1312 is separated by slit 1311.Slit 1311 shown here is straight parallel Line, and along the axial direction setting of stop sleeve 1a, but other designs are equally possible.Folder The medial surface of tight element 1312 forms clamping face 1313, and this clamping face 1313 is arranged in operative position Put and be shelved on tubular body 3.Clamping face 1313 is directed towards the free end diameter increase of clamping element 13 Mild cone, typically pitch angle is in the range of 2-5 °.Pitch angle is generally corresponding to the joint surrounded The pitch angle of the abutment surface 142 of sleeve 14 (seeing below), with clamping face 1313 and around Desired contact is provided between tubular body 3.(see Fig. 6 and Fig. 7) in one embodiment, clamping The part in face 1313 constitutes promptly face 1313 ' (being here illustrated as dentation), but can use it He increases the design of friction, such as zigzag.

(seeing Fig. 4 a and Fig. 4 b) in a second embodiment, attachment 13 is provided with some recesses 132, Each recess accommodates the clamping element 1312 ' of the clamping element form of bending, and this clamping element is provided with cone Outside abutment surface 1315 and cylindrical inwardly clamping face 1313.Clamping face 1313 is preferably Coarse (the most jagged), to represent sufficiently large friction to surface.Recess 132 is provided with and is set Being set to receive the lug 1321 of corresponding back-up ring 1314, back-up ring 1314 has and prevents clamping element 1312 ' The effect dropped out from recess 132.

In one embodiment, sticking department 133 is arranged to axial restraint mode junction joint sleeve 14, this is because sticking department 133 is formed as from the bottom of slit 1311 along jacket surface 12 Divide the external thread part extended.

In this embodiment, adapter sleeve 14 is formed as being provided with joint element (such as internal thread part) 141 Nut, joint element 141 is complementary with the sticking department (such as external thread part) 133 of stop sleeve 1a. In a further description, when adapter sleeve 14 is provided with joint element 141, term " nut " quilt In part with.

In another embodiment, the adapter sleeve 14 axial restraint in attachment 13 is carried by grabbing card system Confession, sticking department 133 includes some outer card divisions 134 of grabbing, and each outer grabs card division 134 along jacket surface 12 Circumferential direction extend through attachment 13 by the separate region of slit, as shown in Figure 6 and Figure 7, Slit 1311 defines clamping element 1312.In the inside of sticking department 133, attachment 13 represents recessed Portion 135, the diameter of the adjacent portions of the diameter of this recess 135 centre bore more than stop sleeve 1a, should Recess extends to outside the axial range of sticking department 133.Attachment 13 and corresponding inner fovea part 135 Separately allow when adapter sleeve 14 (seeing Fig. 7) moves on sticking department 133, sticking department 133 Being pressed inwardly, adapter sleeve 14 is provided with the joint element 141 inwardly stretched out in this embodiment.? In shown embodiment, grab card division 134 and be provided with the first conical side of the end towards clamping section 131 134a, such as, have a pitch angle in the range of 20 °-35 °, shown herein is about 30 °.Relative the Two side faces 134b forms abutment surface, upright as the central axis being perpendicular to clamping section 131 herein Shoulder illustrates.Correspondingly, the joint element 141 of sleeve 14 has mutual with the cross section grabbing card division 134 The cross section mended so that when radially compressing sticking department 133, the cone of joint element 141 Will slide, until connect on the outside side 134a of cone grabbing card division 134 to medial surface 141a Conjunction element 141 is vertically supported by it to adjoin and grabs the abutment surface 134b of card division 134 and connect later Card division 134 is grabbed described in conjunction.In this embodiment, joint element 141 is the most similar shape and presses The axially spaced-apart of rule is arranged.Here, sticking department is shown as having be axially spaced some Grab card division 134, the interval of the joint element 141 of axially spaced-apart spacing corresponding joints sleeve 14.

Referring now specifically to Fig. 3 and Fig. 4 a.At joint element 141 and the first end of adapter sleeve 14 Between 14a, cone adjacency section 142 is prolonged in the way of away from the reduction of the orient diameter of joint element 141 Stretch.The pitch angle of cone adjacency section 142 is preferably equivalent to the clamping face 1313 of clamping element 1312 Or the pitch angle of the abutment surface 1315 of clamping element 1312 ', thus when clamping element 1312,1312 ' When their operating position, in clamping element (such as lip) 1312 or the clamping of clamping element 1312 ' Face 1313 and around tubular body 3 between good contact is provided.

In this embodiment, as nut, adapter sleeve 14 is provided with some grip portions 144 and (sees Fig. 3 With Fig. 4 a), shown herein as the otch of the conus portion extension of the wall through adapter sleeve 14.Grip portions 144 are arranged to be releasably engaged by an instrument (not shown), with swivel joint sleeve (example Such as nut) 14.

With reference now to Fig. 5, Fig. 5 showing, some neighbouring sticking departments 133 of parallel card locked groove 134 ' set The embodiment put.Complementary joint element 141 ' as ridge from the inner wall surface of adapter sleeve 14 to Inside stretch out, and have certain distance with joint element 141.Joint element 141 ' is configured to deformation So that by adapter sleeve 14 axial displacement on sticking department 133, this joint element can climb up card The lateral edges of locked groove 134.Such as, junction surface 141 ' can be by utilizing the adjacent of the wall of adapter sleeve 14 Little material thickness in portion is formed to deformable member, possibly by junction surface 141 ' and adapter sleeve 14 The slit that is axially disposed of the adjacent portions of wall separate (not shown).

Alternatively, as previously described and in figure 6 and figure 7 shown by, adapter sleeve 14 can It is provided with and grabs card system, to stop adapter sleeve 14 to be outwarded winding.

Obviously, the attachment that two ends 11 of sleeve are formed as having kind described above is set Tube rod 1a of 13.Select will stop when tubular body 3 rotates adapter sleeve 14 along its normal direction of rotation The hand of spiral outwarded winding also is apparent from.

When the tubing string built by described tubular body 3 is provided with function element 2, such as new casing is to guarantee set For good introducing cement, there is mode centering in preassembled sleeve pipe in sufficient space between pipe, There is the tube rod 1 of multiple function element 2 and one or more adapter sleeve 14 at relevant tubular body 3 Upper slip, and the clamping face 1313 and possible promptly face 1313 ' by clamping element 1312 be pressed against pipe The mode of the jacket surface of shape body 3 is fixed on desired position by one or more adapter sleeves 14.Logical Cross and use the stop sleeve 1a according to the present invention, tube rod 1, one or more stop sleeve 1a and one Or multiple adapter sleeve 14 slides by desired order and guiding on tubular body 3.One or more Support set cylinder 1a by with above-mentioned corresponding in the way of be attached.Correspondingly, stop sleeve 1a is by by function element 2 are attached to anchor point 136 suitable on stop sleeve 1a and are used as one or more function element 2 Attachment, anchor point 136 is shown as thread pockets in figure 6, is shown in Figure 7 for the spiral shell stretched out Stricture of vagina pin.

Claims (16)

1. the attachment arrangement of the tube rod (1) being arranged on downhole tubular body (3), described tube rod sets There is one or more radially-protruding function element, be wherein provided about described tubular body (3) The described tube rod (1) of a part or the end (11) of the stop sleeve (1a) of adjacent described tube rod (1) Being provided with attachment (13), described attachment includes at least one clamping element (1312,1312 '), Described clamping element is arranged by abutment surface (1315) and the circular cone around adapter sleeve (14) Shape adjacency section (142) is against adjoining and radial displacement, it is characterised in that along described end (11) The sticking department (133) extended in outside is formed as some and grabs card division (134), described in grab card division along described The circumferential direction of the jacket surface of attachment (13) extends and is arranged to engage described adapter sleeve (14) On the corresponding joint element (141) that inwardly stretches out, described in grab the circumferential scope of card division (134) by narrow Seam (1311) limits, and described slit at least penetrates described sticking department (133) and substantially along described attached The axial direction meeting portion (13) extends.

Attachment arrangement the most according to claim 1, wherein said clamping element (1312) is formed For the lip in axial direction stretched out from sticking department (133).

Attachment arrangement the most according to claim 2, the wherein described clamping element of lip form (1312) there is the thickness being gradually reduced along the direction away from described sticking department (133), because inwardly Contact surface (1313) is conical.

Attachment arrangement the most according to claim 1, wherein said clamping element (1312 ') shape Become the bending clamping element in the recess (132) being arranged on described end (11).

Attachment arrangement the most according to claim 4, or many of wherein said recess (132) Individual lateral edges forms lug (1321), and described lug is arranged to reception and is arranged on described clamping element (1312 ') upper corresponding back-up ring (1314).

Attachment arrangement the most according to claim 1, wherein said sticking department (133) be formed as by It is set to engage the threaded portion of the corresponding joint element (141) of described adapter sleeve (14).

Attachment arrangement the most according to claim 1, wherein said attachment (13) is provided with indent Portion (135), described inner fovea part is surrounded by described sticking department (133) and has more than described sticking department (133) The axial range of axial range.

Attachment arrangement the most according to claim 6, wherein protecting adjacent to described sticking department (133) Set surface (12) is provided with at least one latch groove (134 '), and described latch groove is arranged to receive complementation Junction surface (141 '), described junction surface is provided on described adapter sleeve (14) inwardly stretches out And have certain distance with described adjacency section (142).

Attachment arrangement the most according to claim 8, wherein said junction surface (141 ') is along described Extending of adapter sleeve (14) circumferentially continuously.

Attachment arrangement the most according to claim 8, wherein said junction surface (141 ') is off 's.

11. attachment arrangements according to claim 6, wherein said sticking department (133) and described The pitch direction of the joint element (141) of the corresponding screw thread of adapter sleeve (14) and described tubular body (3) direction of rotation is contrary.

12. attachment arrangements according to claim 1, wherein said tubular body (3) be sleeve pipe, Bushing pipe or BHA.

13. attachment arrangements according to claim 1, wherein said sticking department (133) is formed as It is arranged to engage the threaded portion of the corresponding joint element (141) of described adapter sleeve (14), with And described sticking department (133) includes that at least one grabs card division (134), described in grab card division along described attachment The circumferential direction of the jacket surface in portion (13) extends and is arranged to engage on described adapter sleeve (14) The corresponding joint element (141) inwardly stretched out, described in grab the circumferential scope of card division (134) by slit (1311) limiting, described slit penetrates at least part of described sticking department (133) and substantially along described The axial direction of attachment (13) extends.

14. attachment arrangements according to claim 1, wherein said tube rod (1) or described support Sleeve (1a) is provided with one or more function element (2), described function element select free stable element, The group of centring element, sand screen and cable clip.

15. attachment arrangements according to claim 1, wherein said tube rod (1) or described support Sleeve (1a) is provided with the one or more anchor points (136) for function element (2).

16. 1 kinds of tubing strings including some tubular bodies (3), it is characterised in that one or more tubuloses Body (3) is provided with at least one stop sleeve (1a), and described stop sleeve is by according to claim 1-14 In a described attachment arrangement be fixed on the one or more tubular body (3), described attachment dress Put the part with the one or more tubular body (3) to be releasably engaged.