CN114458180A - Sleeve connecting device - Google Patents
Sleeve connecting device Download PDFInfo
- Publication number
- CN114458180A CN114458180A CN202011247898.4A CN202011247898A CN114458180A CN 114458180 A CN114458180 A CN 114458180A CN 202011247898 A CN202011247898 A CN 202011247898A CN 114458180 A CN114458180 A CN 114458180A
- Authority
- CN
- China
- Prior art keywords
- channel
- sleeve
- cannula
- sealing ring
- connection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003780 insertion Methods 0.000 claims abstract description 34
- 230000037431 insertion Effects 0.000 claims abstract description 34
- 238000007789 sealing Methods 0.000 claims description 61
- 230000000284 resting effect Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 description 10
- 230000013011 mating Effects 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002627 tracheal intubation Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
Abstract
The embodiment of the invention belongs to the technical field of oil exploitation equipment, and particularly relates to a casing pipe connecting device. The embodiment of the invention aims to solve the technical problem that the operation is complex when a drill rod cuts a first sleeve in a well pipe to form a matching hole. The sleeve connecting device comprises a body and a cannula. The channel penetrating through the body is arranged into a first channel close to the top end, a second channel close to the bottom end and a third channel positioned between the first channel and the second channel, and the cross-sectional area of the first channel is gradually increased along the direction far away from the second channel; the second channel is connected with the first sleeve; the side wall of the third channel is provided with a connecting internal thread to be connected with the drill rod. Because the sleeve connecting device is already provided with the first channel for inserting the insertion pipe, after the body and the first sleeve are placed into the well pipe through the drill rod, the body does not need to be cut through the drill rod, the insertion pipe connected with the bottom end of the second sleeve can be matched with the first channel, so that the first sleeve is connected with the second sleeve, and the operation difficulty is simplified.
Description
Technical Field
The embodiment of the invention relates to the technical field of oil exploitation equipment, in particular to a casing pipe connecting device.
Background
In the oil exploitation process, a well pipe is usually drilled on the ground, the bottom end of the well pipe extends to an oil storage layer, and then the casing pipe is arranged in the well pipe in a penetrating mode so as to convey oil in the oil storage layer to the ground through an oil pipe arranged in the casing pipe, and further the exploitation of the oil is realized.
In the related art, the depth of the well casing is large, so that the length of the casing is large, and therefore, the casing is generally divided into a first casing and a second casing, the first casing is first inserted into the well casing, and then the second casing is inserted into the well casing, so that the first casing and the second casing are connected to form the casing. The top end of the first sleeve is provided with a connecting threaded hole, and the connecting threaded hole is matched with the drill rod so as to place the first sleeve into the well pipe through the drill rod; because the diameter of the drill rod is smaller than that of the sleeve, after the first sleeve is placed in the well pipe, a milling cutter needs to be connected to the drill rod to cut the connection threaded hole, and a bell-mouth-shaped matching hole is formed; after the well pipe is placed into the second sleeve, the bottom end of the second sleeve extends into the matching hole, so that the first sleeve is connected with the second sleeve.
However, the operation of cutting the first casing inside the well tubular by means of the drill rod to form the mating hole is complicated.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a casing connection device to solve the technical problem of complicated operation of cutting a first casing in a well casing by a drill rod to form a mating hole.
An embodiment of the present invention provides a bushing connection device, including: the bottom end of the body is used for being connected with the first sleeve, a channel is arranged on the body, the channel penetrates through the body from the bottom end to the top end, and the channel is used for being communicated with the first sleeve;
the channel comprises a first channel close to the top end, a second channel close to the bottom end and a third channel positioned between the first channel and the second channel, and a connecting internal thread is arranged on the side wall of the third channel; the cross-sectional area of the first channel is gradually increased along the direction far away from the second channel;
the top end of the insertion tube is used for being connected with the second sleeve, the insertion tube is inserted in the first channel, and a matching portion matched with the first channel is arranged on the side wall of the insertion tube.
So configured, the second channel may be connected to the first sleeve; the side wall of the third channel is provided with connecting internal threads which can be in threaded connection with a drill rod and used for placing a first sleeve connected with the second channel into a well pipe; the insertion tube is inserted into the first channel, and a matching part matched with the first channel is arranged on the side wall of the insertion tube and used for sealing a gap between the insertion tube and the body. Because the first channel is arranged on the casing connecting device, the body does not need to be cut in the well pipe through the drill rod to form a matching hole, and the operation is simple.
In some embodiments, which may include the above-described embodiments, the first channel is flared and the mating portion includes an annular flange disposed on a sidewall of the cannula.
In some embodiments, which may include the above embodiments, the side of the annular flange facing away from the cannula is curved, the curved surface bulging in a direction facing away from the cannula.
In some embodiments, which may include the above embodiments, the annular flange is a plurality of annular flanges, the plurality of annular flanges are spaced apart along a centerline of the cannula, and an outer diameter of the annular flange gradually increases in a direction away from the body.
In some embodiments, which may include the above-mentioned embodiments, an end of the first channel adjacent to the third channel is provided with a sealing ring, and a side wall of the cannula adjacent to the body is provided with a sealing flange, which abuts against the sealing ring.
In some embodiments, which may include the above-described embodiments, the sealing flange abuts against a top end of the sealing ring.
In some embodiments, which may include the above embodiments, the inner wall of the sealing ring is disposed obliquely with respect to the center line of the sealing ring, so that the cross-sectional area of the space enclosed by the sealing ring is gradually increased in a direction away from the second passage, and the sealing flange abuts against the inner wall of the sealing ring.
In some embodiments, which may include the above embodiments, the end of the sealing ring facing the second channel is provided with a groove.
In some embodiments, which may include the above-described embodiments, the body is adapted for removable connection with the first cannula.
In some embodiments, which may include the above-described embodiments, the body and the first sleeve are connected by a thread, and the thread direction between the body and the first sleeve is opposite to the thread direction of the connecting internal thread.
The cannula connection device provided by the embodiment comprises a body and a cannula. The body is provided with a channel, the channel penetrates through the body from the bottom end to the top end, and the channel is used for being communicated with the first sleeve; the channel of the body is arranged into a first channel close to the top end, a second channel close to the bottom end and a third channel positioned between the first channel and the second channel, the cross section area of the first channel is gradually increased along the direction far away from the second channel, so that the intubation tube is inserted into the first channel; the second channel may be connected to the first sleeve; the side wall of the third channel is provided with connecting internal threads which can be in threaded connection with a drill rod and are used for placing the body and the first sleeve connected with the second channel into the well pipe; the insertion tube is inserted into the first channel, and a matching part matched with the first channel is arranged on the side wall of the insertion tube and used for sealing a gap between the insertion tube and the body. Because the first channel of establishing the intubate has been set up well on the sleeve pipe connecting device, after putting into the well casing with body and first sleeve pipe through the drilling rod, need not to cut the body through the drilling rod, later put into the well casing with the second sleeve pipe that the bottom was provided with the intubate, the intubate can with the cooperation of first channel cooperation portion to realize being connected between first sleeve pipe and the second sleeve pipe, simplified the operation degree of difficulty.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is easy to see that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an exploded view of a casing joint arrangement according to an embodiment of the present invention;
fig. 2 is a sectional view of a body in a socket coupling device according to an embodiment of the present invention;
FIG. 3 is a first cross-sectional view of a first passageway in a ferrule connection device according to an embodiment of the present invention;
FIG. 4 is a second cross-sectional view of a first passageway in a ferrule coupling device according to an embodiment of the present invention;
FIG. 5 is a first structural view of a cannula in a cannula coupling device according to an embodiment of the present invention;
fig. 6 is a second structural view of the cannula in the cannula connecting device according to the embodiment of the present invention;
FIG. 7 is a third structural view of the cannula coupling device in accordance with an embodiment of the present invention;
FIG. 8 is a fourth structural view of the cannula connection device provided in accordance with an embodiment of the present invention;
fig. 9 is a sectional view of a seal ring in a socket coupling device according to an embodiment of the present invention.
Description of reference numerals:
10: a body;
20: inserting a tube;
30: a fitting portion;
40: a seal ring;
50: a sealing flange;
101: a first channel;
102: a second channel;
103: a third channel;
104: connecting the internal threads;
301: an annular flange;
401: and (4) a groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the oil exploitation process, a well pipe is usually drilled on the ground, the bottom end of the well pipe extends to an oil storage layer, and then the casing pipe is arranged in the well pipe in a penetrating mode so as to convey oil in the oil storage layer to the ground through an oil pipe arranged in the casing pipe, and further the exploitation of the oil is realized.
In the related art, the depth of the well casing is large, so that the length of the casing is large, and therefore the casing is generally divided into a first casing and a second casing, the first casing is firstly inserted into the well casing, and then the second casing is inserted into the well casing, so that the first casing is connected with the second casing to form the casing. The top end of the first sleeve is provided with a connecting threaded hole, and the connecting threaded hole is matched with the drill rod so as to place the first sleeve into the well pipe through the drill rod; because the diameter of the drill rod is smaller than that of the sleeve, after the first sleeve is placed in the well pipe, a milling cutter needs to be connected to the drill rod to cut the connection threaded hole, and a bell-mouth-shaped matching hole is formed; after the well pipe is placed into the second sleeve, the bottom end of the second sleeve extends into the matching hole, so that the first sleeve is connected with the second sleeve.
However, the operation of cutting the first casing inside the well tubular by means of the drill rod to form the mating hole is complicated.
The embodiment provides a casing connecting device, wherein the bottom end of a body is connected with a first casing, a channel is arranged on the body, the channel comprises a first channel close to the top end, a second channel close to the bottom end and a third channel positioned between the first channel and the second channel, and a connecting internal thread is arranged on the side wall of the third channel; the cross-sectional area of the first channel is gradually increased along the direction far away from the second channel; the top end of the insertion pipe is used for being connected with the second sleeve pipe, and the insertion pipe is inserted in the first channel. After putting into the well casing through the drilling rod with body and first sleeve, need not to cut the body through the drilling rod, later put into the well casing with the second sleeve that the bottom was provided with the intubate, the intubate can with first passageway cooperation to realize being connected between first sleeve and the second sleeve, simplified the operation degree of difficulty.
As shown in fig. 1 and 2, the present embodiment provides a sleeve connecting device including: a body 10 and a cannula 20. The bottom end of the body 10 is adapted to be coupled to a first casing, and the exemplary body 10 may be coupled to the first casing by threading, welding, or the like. Of course, the body 10 and the first sleeve may be of a unitary construction. The body 10 and the cannula 20 may be made of metal such as carbon steel or low alloy steel.
In this embodiment, the body 10 is provided with a channel, the channel penetrates through the body 10 from the bottom end to the top end, and the channel is used for communicating with the first sleeve; the channels include a first channel 101 near the top end, a second channel 102 near the bottom end, and a third channel 103 located between the first channel 101 and the second channel 102. Illustratively, the second passage 102 and the first sleeve can be detachably connected through threads, and when the threads of the second passage 102 are internal threads, the first sleeve is provided with external threads; when the body 10 is provided with the external thread, the first sleeve is provided with the internal thread; of course, the body 10 and the first sleeve may be both external threads, a pipe clamp is disposed between the body 10 and the first sleeve, and an internal thread is disposed on the pipe clamp, so as to connect the body 10 and the first sleeve through the pipe clamp.
In this embodiment, the top end of the insertion tube 20 is used for connecting with a second sleeve, for example, the top end of the insertion tube 20 is detachably connected with the second sleeve through a thread, and when the thread of the insertion tube 20 is an internal thread, the second sleeve is provided with an external thread; when the thread of the insertion pipe 20 is an external thread, the second sleeve is provided with an internal thread; of course, the threads of the cannula 20 and the second cannula may be both external threads, and a ferrule is disposed between the cannula 20 and the second cannula, and an internal thread is disposed on the ferrule to realize the connection between the cannula 20 and the second cannula through the ferrule.
Further, the first passage 101 has a gradually increasing cross-sectional area in a direction away from the second passage 102, so as to guide the cannula 20 such that the cannula 20 can be inserted into the first passage 101. The insertion tube 20 is inserted into the first passage 101, and the side wall of the insertion tube 20 is provided with a fitting portion 30 that fits in the first passage 101. The fitting portion 30 and the first passage 101 are used for sealing the gap between the cannula 20 and the body 10.
In this embodiment, the side wall of the third channel 103 has an internal connection thread 104, and the internal connection thread 104 is in threaded connection with a drill rod, and is used for placing the body 10 and the first casing connected with the second channel 102 into a well pipe.
The first sleeve and the second sleeve are connected together through the sleeve connecting device in the well casing to form a complete sleeve for penetrating an oil pipe, and oil in the oil storage layer is conveyed to the ground through the oil pipe, so that the oil is exploited.
The cannula connection device provided in this embodiment includes a body 10 and a cannula 20. The body 10 is provided with a channel, the channel penetrates through the body 10 from the bottom end to the top end, and the channel is used for being communicated with the first sleeve; the channels of the body 10 are arranged as a first channel 101 near the top end, a second channel 102 near the bottom end and a third channel 103 between the first channel 101 and the second channel 102, the cross-sectional area of the first channel 101 is gradually increased along the direction far away from the second channel 102, so that the cannula 20 is inserted into the first channel 101; the second channel 102 may be connected to a first sleeve; the side wall of the third channel 103 is provided with connecting internal threads 104 which can be in threaded connection with a drill rod and are used for placing the body 10 and a first sleeve connected with the second channel 102 into a well pipe; the cannula 20 is inserted into the first passage 101, and the sidewall of the cannula 20 is provided with a fitting portion 30 fitted to the first passage 101 for sealing a gap between the cannula 20 and the body 10. Because the first channel 101 for inserting the insertion pipe 20 is already arranged on the casing connecting device, after the body 10 and the first casing are put into a well pipe through a drill rod, the body 10 does not need to be cut through the drill rod, then the second casing with the insertion pipe 20 arranged at the bottom end is put into the well pipe, the insertion pipe 20 can be matched with the first channel 101, so that the connection between the first casing and the second casing is realized, and the operation difficulty is simplified.
With continued reference to fig. 3-8, in this embodiment, the first channel 101 may be flared as shown in fig. 3, and the mating portion 30 includes an annular flange 301 disposed on a sidewall of the cannula 20. Since the first passage 101 is formed in a bell shape and the bell surface is rounded, the cannula 20 can be easily inserted into the bell even if the cannula 20 is slightly inclined. The annular flange 301 may be connected to the cannula 20 by screwing, welding, etc. Of course, the annular flange 301 may be of unitary construction with the cannula 20. The annular flange 301 may be made of a metal material such as carbon steel or low alloy steel.
Further, the side of the annular flange 301 facing away from the cannula 20 may be curved as shown in fig. 5, the curve being convex in a direction away from the cannula 20. When the insertion tube 20 is inserted into the bell mouth, the annular flange 301 and the bell mouth contact surface form a curved surface, and under the action of the gravity of the second sleeve and the insertion tube 20, the curved surface formed by the annular flange 301 and the bell mouth contact surface is tightly attached, and the annular flange 301 is abutted against the bell mouth to seal the gap between the insertion tube 20 and the body 10. When the first channel 101 is flared, the annular flange 301 can be brought into curved contact with the flare even when the centerline of the cannula 20 is not collinear with the centerline of the first channel 101, thereby sealing the cannula 20 and the body 10.
In some embodiments, the first channel 101 may also have the shape shown in fig. 4, and the inner wall of the opening of the first channel 101 may be beveled. Of course, the first passage 101 may have other shapes as long as the shape of the first opening is such that the cross-sectional area of the first passage 101 gradually increases in a direction away from the second passage 102 so as to facilitate the insertion of the cannula 20 into the first passage 101.
Further, the side of the annular flange 301 facing away from the cannula 20 may also be beveled as shown in fig. 7 or 8, the bevel projecting away from the cannula 20. Of course, the side of the annular flange 301 facing away from the cannula 20 may have other shapes, as long as the shape of the side of the annular flange 301 facing away from the cannula 20 is such that the cross-sectional area of the side of the annular flange 301 facing away from the cannula 20 is gradually increased in a direction away from the body 10, so as to closely fit the opening shape of the first channel 101. When the cannula 20 is inserted into the first channel 101, the inclined surface of the annular flange 301 is engaged with the inclined surface of the first channel 101, and under the gravity of the second sleeve and the cannula 20, the inclined surface of the annular flange 301 is engaged with the inclined surface of the first channel 101 more tightly, and the inclined surface of the annular flange 301 is abutted against the inclined surface of the first channel 101 to seal the gap between the cannula 20 and the body 10.
In this embodiment, the annular flange 301 is provided in plurality, and the plurality of annular flanges 301 are arranged at intervals along the central line direction of the insertion tube 20, and along the direction away from the body 10, the outer diameter of the annular flange 301 is gradually increased, so as to further improve the sealing property between the insertion tube 20 and the body 10. Each annular flange 301 will engage the opening of the first channel 101, so that each annular flange 301 will form a sealing surface with the first channel 101 and a plurality of annular flanges 301 will form a plurality of sealing surfaces to provide a stronger seal. Because the outer diameters of the plurality of annular flanges 301 are gradually increased, the annular flanges 301 abut against the opening of the first channel 101, so that the opening of the first channel 101 is deformed in the direction away from the center line, the larger the outer diameter is, the stronger the acting force between the annular flanges 301 and the first channel 101 is, and the better the sealing effect is.
With continued reference to fig. 1 and 9, in the present embodiment, a sealing ring 40 is disposed at one end of the first channel 101 close to the third channel 103, and a sealing flange 50 is disposed on a side wall of the cannula 20 close to the body 10, wherein the sealing flange 50 abuts against the sealing ring 40. Illustratively, the sealing flange 50 abuts against the top end of the sealing ring 40. The top of the sealing ring 40 may be a horizontal plane, with the bottom of the sealing flange 50 abutting the top of the sealing ring 40. Of course, the top of the sealing ring 40 may also be a slope as shown in fig. 9, and the inner wall of the sealing ring 40 is inclined relative to the center line of the sealing ring 40, so that the cross-sectional area of the space surrounded by the sealing ring 40 is gradually increased along the direction away from the second passage 102, and the sealing flange 50 abuts against the slope of the sealing ring 40. When the sealing flange 50 moves downwards under the action of the gravity of the second sleeve, the sealing flange 50 causes the sealing ring 40 to deform, the deformation increases as the cross-sectional area of the space enclosed by the sealing ring 40 decreases, and the force between the sealing flange 50 and the sealing ring 40 increases, so that the sealing effect is enhanced.
In some embodiments, the end of the seal ring 40 facing the second channel 102 is provided with a groove 401. For example, the grooves 401 may be arc-shaped, and due to pressure in the well pipe during oil production, the side surfaces of the arc-shaped structure are also subjected to pressure in addition to upward pressure, so that the side surfaces of the arc-shaped structure deform towards two sides, and the pressure not only pushes the arc-shaped structure upwards, but also deforms the arc-shaped structure towards two sides to facilitate sealing.
In this embodiment, the body 10 is adapted to be detachably connected to the first sleeve. The body 10 is connected with the first sleeve through threads, and the thread direction between the body 10 and the first sleeve is opposite to the thread direction of the connecting internal thread 104. So set up, connect internal thread 104 and be used for linking to each other with the drilling rod, use the drilling rod to put body 10 and the first sleeve pipe that links to each other with body 10 in the well casing, through the drilling tool rotation, do not make body 10 withdraw from the screw thread of first sleeve pipe when withdrawing from connecting internal thread 104 with the drilling rod to accomplish taking out of drilling tool.
In the casing connecting device provided by the embodiment, the second channel 102 is in threaded connection with the first casing, the top end of the insertion pipe 20 is in threaded connection with the second casing, the body 10 and the first casing are placed in a well through connection of the drill rod and the connecting internal thread 104, cement slurry is injected, after well cementation construction is completed, the drill rod and the connecting internal thread 104 are withdrawn through rotation of the drilling tool, and the drill rod is taken out; and then the second sleeve is placed in the well pipe, the bell mouth of the body 10 on the first sleeve is butted with the annular flange 301 of the insertion pipe 20 on the second sleeve, and when the insertion pipe 20 is inserted into the bell mouth, the annular flange 301 and the contact surface of the bell mouth form curved surface sealing. The bottom of the sealing flange 50 abuts against the horizontal plane of the top of the sealing ring 40, and at this time, the bottom of the sealing flange 50 is attached to the top of the sealing ring 40 to form another seal. Thereby first sleeve pipe links together through bushing apparatus with the second sleeve pipe in the well, has formed the complete sleeve pipe that is used for wearing to establish oil pipe, carries the intraformational oil of oil storage to ground through oil pipe, and then realizes the exploitation of oil. Since the first passage 101 is already provided in the casing connection, it is not necessary to cut the body 10 in the well tubular by means of a drill rod to form a mating hole, simplifying the operation.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A casing connection device, comprising: the bottom end of the body is used for being connected with the first sleeve, a channel is arranged on the body, the channel penetrates through the body from the bottom end to the top end, and the channel is used for being communicated with the first sleeve;
the channel comprises a first channel close to the top end, a second channel close to the bottom end and a third channel positioned between the first channel and the second channel, and a connecting internal thread is arranged on the side wall of the third channel; the cross-sectional area of the first channel is gradually increased along the direction far away from the second channel;
the top end of the insertion tube is used for being connected with a second sleeve, the insertion tube is inserted into the first channel, and a matching portion matched with the first channel is arranged on the side wall of the insertion tube.
2. The cannula connection device of claim 1, wherein the first passageway is flared and the engagement portion includes an annular flange disposed on a sidewall of the cannula.
3. A cannula connection device according to claim 2, wherein the side of the annular flange facing away from the cannula is curved, the curved surface projecting away from the cannula.
4. The cannula connection device according to claim 3, wherein the annular flange is provided in plurality, and the plurality of annular flanges are provided at intervals in a direction of a center line of the cannula, and an outer diameter of the annular flange is gradually increased in a direction away from the body.
5. A cannula connection device according to any of claims 1-4, characterized in that the end of the first channel near the third channel is provided with a sealing ring, and the cannula is provided with a sealing flange on the side wall near the body, which sealing flange abuts against the sealing ring.
6. The cannula connection device of claim 5, wherein the sealing flange abuts a top end of the sealing ring.
7. A cannula connection device according to claim 5, characterized in that the inner wall of the sealing ring is arranged obliquely in relation to the centre line of the sealing ring such that the cross-sectional area of the space enclosed by the sealing ring increases gradually in a direction away from the second passage, the sealing lip resting against the inner wall of the sealing ring.
8. A cannula connection device according to claim 5, characterized in that the end of the sealing ring facing the second channel is provided with a groove.
9. A cannula connection device according to any of claims 1-4, wherein the body is adapted for detachable connection to the first cannula.
10. The apparatus according to claim 9, wherein the body is threadedly engaged with the first sleeve, and wherein the body and the first sleeve have threads that are opposite to threads of the internal connection threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011247898.4A CN114458180A (en) | 2020-11-10 | 2020-11-10 | Sleeve connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011247898.4A CN114458180A (en) | 2020-11-10 | 2020-11-10 | Sleeve connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114458180A true CN114458180A (en) | 2022-05-10 |
Family
ID=81404441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011247898.4A Pending CN114458180A (en) | 2020-11-10 | 2020-11-10 | Sleeve connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114458180A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB691372A (en) * | 1950-04-13 | 1953-05-13 | George Arthur Neat | Pipe couplings |
| CN201715131U (en) * | 2010-03-26 | 2011-01-19 | 衡阳华菱连轧管有限公司 | Airtight saw-toothed thread connector and casing and coupling utilizing same |
| CN202165049U (en) * | 2011-08-05 | 2012-03-14 | 中国石油天然气股份有限公司 | Tube-inserting well cementation device |
| CN202194604U (en) * | 2011-08-29 | 2012-04-18 | 中国石油集团川庆钻探工程有限公司 | Combined plug drilling tool for tie-back casing |
| CN202391353U (en) * | 2011-12-16 | 2012-08-22 | 贵州高峰石油机械股份有限公司 | Non-collar connection thread for petroleum oil pipe and casing |
| CN202645464U (en) * | 2012-06-06 | 2013-01-02 | 中国石油天然气集团公司 | Casing joint for oil well pipe |
| CN202832261U (en) * | 2012-07-31 | 2013-03-27 | 中国石油天然气集团公司 | Petroleum casing joint |
| CN205349249U (en) * | 2016-02-22 | 2016-06-29 | 罗江云 | Stone pipe joints |
| CN108194723A (en) * | 2018-02-12 | 2018-06-22 | 中国恩菲工程技术有限公司 | It is axially forced to formula tube joint assembly |
| CN110005346A (en) * | 2019-04-04 | 2019-07-12 | 靖江特殊钢有限公司 | A kind of petroleum sleeve joint of metal loop seals |
-
2020
- 2020-11-10 CN CN202011247898.4A patent/CN114458180A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB691372A (en) * | 1950-04-13 | 1953-05-13 | George Arthur Neat | Pipe couplings |
| CN201715131U (en) * | 2010-03-26 | 2011-01-19 | 衡阳华菱连轧管有限公司 | Airtight saw-toothed thread connector and casing and coupling utilizing same |
| CN202165049U (en) * | 2011-08-05 | 2012-03-14 | 中国石油天然气股份有限公司 | Tube-inserting well cementation device |
| CN202194604U (en) * | 2011-08-29 | 2012-04-18 | 中国石油集团川庆钻探工程有限公司 | Combined plug drilling tool for tie-back casing |
| CN202391353U (en) * | 2011-12-16 | 2012-08-22 | 贵州高峰石油机械股份有限公司 | Non-collar connection thread for petroleum oil pipe and casing |
| CN202645464U (en) * | 2012-06-06 | 2013-01-02 | 中国石油天然气集团公司 | Casing joint for oil well pipe |
| CN202832261U (en) * | 2012-07-31 | 2013-03-27 | 中国石油天然气集团公司 | Petroleum casing joint |
| CN205349249U (en) * | 2016-02-22 | 2016-06-29 | 罗江云 | Stone pipe joints |
| CN108194723A (en) * | 2018-02-12 | 2018-06-22 | 中国恩菲工程技术有限公司 | It is axially forced to formula tube joint assembly |
| CN110005346A (en) * | 2019-04-04 | 2019-07-12 | 靖江特殊钢有限公司 | A kind of petroleum sleeve joint of metal loop seals |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0152406B1 (en) | Pipe joint | |
| JPS624593B2 (en) | ||
| JPS588892A (en) | Connecting method and joint assembly | |
| EP2802731B1 (en) | Seal assembly for nested dual drill pipe | |
| KR20210028600A (en) | Connection for percussion drilling | |
| CN114458180A (en) | Sleeve connecting device | |
| UA81459C2 (en) | High-tightening threaded joint of oil-production pipes (variants) and method for making threaded joint of those pipes (variants) | |
| CN211287550U (en) | Drill rod connecting mechanism suitable for gas extraction of soft coal seam | |
| CN203403832U (en) | Air-tight seal screwed joint | |
| US4846507A (en) | Casing connector | |
| US11946572B2 (en) | Threaded connection including and intermediate shoulder | |
| CN205370461U (en) | Device for connecting be used for preventer pressure testing instrument | |
| CN211422544U (en) | Multi-edge double-channel multi-stage pushing deslagging drill rod | |
| CN106437552A (en) | High-sealing drill pipe joint | |
| CN220623059U (en) | Clamping and pressing type pipe fitting | |
| CN206346714U (en) | A kind of high sealing tool joint | |
| US20210310318A1 (en) | Protective device for a male end portion of a steel tube intended for use in a tubular hydrocarbon working string | |
| CN212671598U (en) | Casing thread structure for well drilling casing gas sealing | |
| CN216130885U (en) | Oil pipe or casing pipe make-up centralizer | |
| CN213116198U (en) | Sleeve connecting device and underwater drilling and blasting construction sleeve assembly | |
| CN201074482Y (en) | Connection structure for sealing pipeline of circular ring and conus | |
| CN214062879U (en) | Coupling, oil pipe and oil pipe assembly | |
| CN217151858U (en) | Novel double-wall guide drill rod | |
| CN109237133B (en) | High-temperature corrosion medium drainage device based on fillet welding | |
| CN211950369U (en) | Small-bore high-strength buckle-changing quick drilling tool joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |