CN205172491U - Spacing directional nipple joint of axial - Google Patents
Spacing directional nipple joint of axial Download PDFInfo
- Publication number
- CN205172491U CN205172491U CN201520894110.7U CN201520894110U CN205172491U CN 205172491 U CN205172491 U CN 205172491U CN 201520894110 U CN201520894110 U CN 201520894110U CN 205172491 U CN205172491 U CN 205172491U
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- nipple
- positioning adapter
- directed pipe
- axial
- pipe nipple
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Abstract
The utility model discloses a spacing directional nipple joint of axial, this orientation nipple joint include the nipple joint body, and the nipple joint body has the shoulder hole of following its axial direction and lining up, installs the location bush in the shoulder hole, the location bush with through the key connection of splining between the nipple joint body, the nipple joint this internal be equipped with right spacing limit structure is carried out to location bush axial. The utility model discloses use the key -type connection to realize fixing a position the spacing of bush rotation, spacing limit structure is carried out to location bush axial to this internal still being equipped with of nipple joint simultaneously. The problem of the directional nipple joint that is provided with the bolt hole among the prior art damage the sealing washer when the bush of installation location is solved, high -speed mud stream has been eliminated through radially revealing the passageway.
Description
Technical field
The utility model relates to the directed pipe nipple of a kind of axial limiting.
Background technology
Directed pipe nipple sits the downhole instrument string used in the operation of keyed wireless drilling tracking measurement to sit key apparatus, and directed pipe nipple comprises nipple body, and nipple body is provided with along its axially through shoulder hole, is equipped with positioning adapter in shoulder hole.Positioning adapter is fixed in nipple body by positioning bolt, and positioning bolt plays and stops the rotation of positioning adapter and the effect of axial displacement.Shoulder hole in the bolt hole that nipple body is arranged and nipple body connects, and in the process of installing positioning adapter, the O-ring seals of positioning adapter lower end is easily damaged when the face of passing through mutually by bolt hole place, causes O-ring seals seal failure.After directed pipe nipple and corresponding drill set are incorporated into well, along with increase and the continuity of tracking measurement activity duration of drilling tool inside and outside differential pressure, the effect that the O-ring seals of positioning adapter lower end lost efficacy highlights further.High-pressure slurry stream in drilling tool enters bore hole annulus through the O-ring seals lost efficacy through bolt hole, causes mud short-circuit cycle.Directed pipe nipple is bad by high-pressure slurry stream thorn, and the pulse signal of measurement while-drilling instrument disappears, drillng operation accidental interruption, is forced to pull out of hole check and change, and affects reliability and timeliness that wireless drilling measures operation.
Summary of the invention
The purpose of this utility model is to provide a kind of axial limiting directed pipe nipple, to solve existing directed pipe nipple causes easily damaging when installing positioning adapter the sealing ring on positioning adapter technical problem due to its sidewall arranging bolt hole.
To achieve these goals, the directed pipe nipple of a kind of axial limiting of the utility model adopts following technical scheme: directed pipe nipple comprises nipple body, nipple body has along the through shoulder hole of its axial direction, in shoulder hole, positioning adapter is installed, carry out spline by key between described positioning adapter with described nipple body to be connected, be provided with in described nipple body and axially spacing position limiting structure is carried out to described positioning adapter.
Described position limiting structure comprises the first position limiting structure and the second position limiting structure, and described first position limiting structure comprises the circlip be arranged on nipple body inwall.
Described first position limiting structure also comprise one end be adjacent to described positioning adapter end, spacing ring between positioning adapter and circlip.
Described shoulder hole has the step surface for one end axial limiting to described positioning adapter, and described step surface forms described second position limiting structure.
Described shoulder hole has the seal section be sealed and matched with described positioning adapter and the plug-in mounting section loaded vertically for positioning adapter, and the aperture of described seal section is less than the aperture of described plug-in mounting section.
Described positioning adapter be provided with sealing ring with the described seal section section of being sealed and matched periphery.
Described nipple body inwall be provided with to lead with described key coordinate along the axially extended stopper slot of nipple body.
Described nipple body outer wall is provided with the mark groove for identifying described stopper slot position.
Described positioning adapter sidewall is provided with radially through keyway, and the two ends of described key protrude from keyway respectively.
The two ends of described nipple body are equipped with the screw thread for being connected with corresponding drilling tool.
The beneficial effects of the utility model are: the utility model use key to connect to realize to positioning adapter rotate spacing, key plays radial spacing effect, is also provided with simultaneously and axially carries out spacing position limiting structure to positioning adapter in nipple body.Relative to directed pipe nipple of the prior art, positioning bolt can be saved.And then not be used in and nipple body arranges radial through bolt hole, avoid damaging sealing ring when installing positioning adapter, eliminate high velocity mud and flow through radial leakage, mud short-circuit cycle can not be there is in directed pipe nipple or directed pipe nipple is scrapped in advance, thus improve the safety of wireless drilling tracking measurement operation, reliability and stability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the directed pipe nipple of the utility model axial limiting.
Detailed description of the invention
The embodiment of the directed pipe nipple of the utility model axial limiting, as shown in Figure 1: this directed pipe nipple comprises the nipple body 1 extended in left-right direction and the positioning adapter 3 be assemblied in nipple body 1, is connected between positioning adapter 3 with described nipple body 1 by key 5.Be provided with in nipple body and axially carry out spacing position limiting structure to described positioning adapter, position limiting structure comprises the first position limiting structure and the second position limiting structure.Be provided with along the through shoulder hole of its axial direction in nipple body 1, shoulder hole has the step surface 9 for carrying out axial limiting to the left end of positioning adapter 3, and step surface forms the second above-mentioned position limiting structure.
The first position limiting structure for carrying out axial limiting to positioning adapter 3 is provided with in the right-hand member of positioning adapter 3 in shoulder hole.First position limiting structure comprises the circlip 7 that the right-hand member to spacing ring 6 that one end is adjacent to the spacing ring 6 in positioning adapter 3 right part and is positioned at shoulder hole carries out axial limiting.Circlip 7 is inlaid on nipple body 1 inwall, and nipple body 1 inwall is provided with the circlip groove holding circlip 7.The periphery of one end of the close step surface of positioning adapter 3 is provided with the O-ring seals 2 for coordinating with nipple body 1 inner wall sealing.Shoulder hole has the seal section be sealed and matched with positioning adapter 3 and the plug-in mounting section loaded vertically for positioning adapter 3, and for the ease of axially loading positioning adapter and do not damage O-ring seals 2 in loading procedure, the aperture of seal section is less than the aperture of plug-in mounting section.
Nipple body 1 inwall be provided with to lead with key 5 coordinate along the axially extended stopper slot of nipple body.Positioning adapter 3 sidewall is provided with radially through keyway, and keyway is shoulder hole, and the two ends of key 5 protrude from keyway respectively.Leading with stopper slot and coordinate in one end of key 5, carries out spacing to the rotation of positioning adapter 3.The other end 51 protruding from keyway of key 5 coordinates for the keyway of the mule shoe guide with instrument string, and restriction instrument string rotates.
The two ends of nipple body 1 are equipped with the screw thread 8 for being connected with corresponding drilling tool.The outer wall of nipple body 1 is provided with the V-type mark groove 4 extended along its axial direction, identifies groove 4 for identifying the position of stopper slot, so that the installation of positioning adapter 3.Mark groove and stopper slot are in radial same plane.
The directed pipe nipple of the utility model is when assembling, first the shoulder hole in nipple body 1 and positioning adapter 3 are cleaned up and smear lubricating grease, then O-ring seals 2 is arranged in the corresponding groove of the left end of positioning adapter 3, key 5 is arranged in the keyway of positioning adapter 3, the right-hand member of positioning adapter 3 from nipple body is pushed shoulder hole.Key 5 position is noted to aim at mark groove in the process, after positioning adapter 3 is in place, then mounting limit ring 6, finally use clamp that circlip 7 is installed.When boring under operation field, directed pipe nipple is connected in the drilling tool of wireless drilling tracking measurement operation, at well head, the mule shoe guide of downhole instrument string is ridden on positioning adapter, one end 51 protruded from positioning adapter of key 5 matches with the keyway of mule shoe guide thus limits the radial displacement of instrument string, keeps tool-face accurately.Compared with directed pipe nipple carries out spacing directed pipe nipple with existing employing bolt, eliminate high velocity mud and flow through radial leakage, can not be short-circuited in directed pipe nipple circulation or directed pipe nipple scrap in advance, thus improve the safety of wireless drilling tracking measurement operation, reliability and stability, for saving the wellbore construction time, reduce engineering cost.
When directed pipe nipple to trip out from down-hole need inspection and maintenance time, first with water, directed pipe nipple is cleaned up, circlip is taken out again with clamp, then taking-up bar is inserted therein hole from the directed nipple body lower end of axial limiting and spacing ring and positioning adapter are passed out body successively, cleaning all component, replacement o sealing ring and damaged part, then assemble for subsequent use.
In the present embodiment, spacing ring adopts the tubular structure of hollow, is provided with compression pawl at its left end; In other embodiments, if the right-hand member of positioning adapter is plane structure, is suitable for circlip and directly it is fixed, then circlip can be adopted directly to carry out axial limiting to the right-hand member of positioning adapter, and save spacing ring; In other embodiments, spacing ring can adopt and not arrange compression pawl, but a sleeve.
In other embodiments, the keyway that positioning adapter is arranged can not be shoulder hole, is arranged to taper hole; Or keyway is arranged to not through keyway, key only protrudes from the outer wall of positioning adapter, plays position-limiting action to the rotation of positioning adapter, for can by other the positioning key be arranged on positioning adapter to the spacing of instrument string in above-described embodiment.
In other embodiment, mark groove, owing to only playing mark action, can be arranged to along the axially extended strip of nipple body, but be arranged in axial direction spaced apart blind hole; Or machining identification line on nipple body outer wall.
In other embodiments, also the shape in the hole of the seal section of shoulder hole can be arranged to taper, utilize pyramidal structure to carry out axial limiting to one end of positioning adapter.
Claims (10)
1. the directed pipe nipple of axial limiting, comprise nipple body, nipple body has along the through shoulder hole of its axial direction, in shoulder hole, positioning adapter is installed, it is characterized in that: carry out spline by key between described positioning adapter with described nipple body and be connected, be provided with in described nipple body and axially spacing position limiting structure is carried out to described positioning adapter.
2. the directed pipe nipple of axial limiting according to claim 1, it is characterized in that: described position limiting structure comprises the first position limiting structure and the second position limiting structure, described first position limiting structure comprises the circlip be arranged on nipple body inwall.
3. the directed pipe nipple of axial limiting according to claim 2, is characterized in that: described first position limiting structure also comprise one end be adjacent to described positioning adapter end, spacing ring between positioning adapter and circlip.
4. the directed pipe nipple of axial limiting according to claim 2, it is characterized in that: described shoulder hole has the step surface for one end axial limiting to described positioning adapter, described step surface forms described second position limiting structure.
5. the directed pipe nipple of axial limiting according to claim 1, it is characterized in that: described shoulder hole has the seal section be sealed and matched with described positioning adapter and the plug-in mounting section loaded vertically for positioning adapter, and the aperture of described seal section is less than the aperture of described plug-in mounting section.
6. the directed pipe nipple of axial limiting according to claim 5, is characterized in that: described positioning adapter be provided with sealing ring with the described seal section section of being sealed and matched periphery.
7. the directed pipe nipple of axial limiting according to claim 1, is characterized in that: described nipple body inwall be provided with to lead with described key coordinate along the axially extended stopper slot of nipple body.
8. the directed pipe nipple of axial limiting according to claim 7, is characterized in that: described nipple body outer wall is provided with the mark groove for identifying described stopper slot position.
9. the directed pipe nipple of axial limiting according to claim 1, is characterized in that: described positioning adapter sidewall is provided with radially through keyway, and the two ends of described key protrude from keyway respectively.
10. the directed pipe nipple of the axial limiting according to claim 1 ~ 9 any one, is characterized in that: the two ends of described nipple body are equipped with the screw thread for being connected with corresponding drilling tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520894110.7U CN205172491U (en) | 2015-11-11 | 2015-11-11 | Spacing directional nipple joint of axial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520894110.7U CN205172491U (en) | 2015-11-11 | 2015-11-11 | Spacing directional nipple joint of axial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205172491U true CN205172491U (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520894110.7U Active CN205172491U (en) | 2015-11-11 | 2015-11-11 | Spacing directional nipple joint of axial |
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| Country | Link |
|---|---|
| CN (1) | CN205172491U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108838637A (en) * | 2018-06-29 | 2018-11-20 | 大连船舶重工集团舵轴有限公司 | The assembly method of rudder stock and rudder blade conical hole |
-
2015
- 2015-11-11 CN CN201520894110.7U patent/CN205172491U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108838637A (en) * | 2018-06-29 | 2018-11-20 | 大连船舶重工集团舵轴有限公司 | The assembly method of rudder stock and rudder blade conical hole |
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