CN207485373U - A kind of economical high hermetic seal tubing and casing - Google Patents
A kind of economical high hermetic seal tubing and casing Download PDFInfo
- Publication number
- CN207485373U CN207485373U CN201721636138.6U CN201721636138U CN207485373U CN 207485373 U CN207485373 U CN 207485373U CN 201721636138 U CN201721636138 U CN 201721636138U CN 207485373 U CN207485373 U CN 207485373U
- Authority
- CN
- China
- Prior art keywords
- casing
- tube body
- box cupling
- tubing
- screw thread
- 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.)
- Active
Links
Abstract
The utility model provides a kind of economical high hermetic seal tubing and casing, and including tubing and casing tube body and box cupling, tubing and casing tube body end is equipped with tube body external screw thread；Box cupling is equipped with coupling inner thread, the tube body external screw thread and coupling inner thread using the long round thread of API 5B standards, 90 ° of right angle sealing shoulders of box cupling endoporus middle part setting.The utility model improves box cupling inner connecting structure, there is provided be interference fitted straight shoulder with external screw thread end face, its hermetic seal is made to greatly improve the oil gas hole condition for more adapting to harsh environmental conditions, simultaneously because screw thread uses API standard screw thread, it is easy to process and greatly reduce cost, it can be exchanged again with API screw threads, oil field is facilitated to use.
Description
Technical field
The utility model belongs to oil exploitation drilling equipment technical field, is related to the oil casing threaded connection skill of drilling equipment
Art, more particularly to a kind of economical high hermetic seal tubing and casing.
Background technology
The oil bushing threaded connector of API standard is each tubing and casing production of the most common oil sleeve joint in China and China
The leading products of factory, this product technology is ripe, easy to process.But the tubing and casing is intrinsic there are still some in structure
Defect, such as leakproofness are bad, limit the use of API tubing and casings.
China Patent Publication No. is CN2575286Y, publication date September in 2003 24 days, the entitled " tubing and casing of utility model
Nipple ", which disclose a kind of oil bushing threaded connectors with good seal performance.The nipple is by external screw thread
Part P and inner thread piece B are formed by connecting by screw thread 1.Its main feature is that external thread piece front end is provided with a column sealed face, interior spiral shell
The corresponding position of line part is provided with a raised spherical surface primary sealing area, and the two interference fit seals.It meanwhile will be outer
Screw element front end face changes into -9 or -15 ° of angles, is formed and is interference fitted with-the 9 of inner thread piece or -15 ° of shoulders.Since in this way,
Not only the bonding strength of connector, sealing performance are improved, while are also eliminated existing between pipe end and pipe end inside box cupling
Gap.But the processing request of special thread is high, is the patent of each producer, and it is expensive, be not suitable for real estate oil field.
Meanwhile special thread can not be exchanged with API screw threads, it has not been convenient to which oil field uses.
Invention content
The purpose of this utility model is to provide a kind of economical high hermetic seal tubing and casing, by improving box cupling connection structure,
Solves prior art mill run poor sealing, the problem of special thread product cost is high.
To realize the purpose of this utility model, the utility model provides a kind of economical high hermetic seal tubing and casing, including
Tubing and casing tube body 1 and box cupling 2, tubing and casing tube body end are equipped with tube body external screw thread 3；Box cupling is equipped with coupling inner thread 4, described
Tube body external screw thread 3 and coupling inner thread 4 use the long round thread of API 5B standards, and 90 ° of right angle sealing station are set in the middle part of box cupling endoporus
Shoulder 5.
Wherein, after the tubing and casing tube body 1 and box cupling 2 are tightened, 3 front end face of tube body external screw thread and box cupling right angle sealing shoulder
5 pairs of tops, into interference fit, interference volume=0.05mm-0.10mm.
Wherein, sealing shoulder 5 internal diameter in the oil casing collar right angle is consistent with tube body diameter of bore.
Compared with the prior art, the beneficial effects of the utility model are, improve box cupling inner connecting structure, there is provided with it is outer
Screw thread end face is interference fitted straight shoulder, its hermetic seal is made to greatly improve the oil gas hole condition for more adapting to harsh environmental conditions, simultaneously
It is easy to process and greatly reduce cost, and can be exchanged with API screw threads because screw thread is using API standard screw thread, oil field is facilitated to use.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the utility model pipe structure schematic diagram；
Fig. 3 is the utility model box cupling structure diagram；
In figure：1- tubing and casing tube bodies, 2- box cuplings, 3- tube body external screw threads, 4- coupling inner threads, 5- box cuplings right angle shoulder.
Specific embodiment
The utility model is described in further detail below in conjunction with specific embodiment.It should be appreciated that described herein
Specific embodiment is only used to explain the utility model, is not used to limit the utility model.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
Be also intended to include plural form, additionally, it should be understood that, when in the present specification using belong to "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, component or module, component and/or combination thereof.
It should be noted that term " first ", " second " in the description and claims of this application etc. is to be used for
Similar object is distinguished, specific sequence or precedence are described without being used for.It should be appreciated that the data used in this way are suitable
It can be interchanged in the case of, so as to presently filed embodiment described herein.In addition, term " comprising " and " having " and he
Any deformation, it is intended that cover it is non-exclusive include, for example, contain the process of series of steps or unit, method,
System, product or equipment are not necessarily limited to those steps or unit clearly listed, but may include what is do not listed clearly
Or for the intrinsic other steps of these processes, method, product or equipment or unit.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.
As shown in Figure 1-Figure 3, the utility model provides a kind of economical high hermetic seal tubing and casing, including tubing and casing tube body
1 and box cupling 2, tubing and casing tube body end is equipped with tube body external screw thread 3；Box cupling is equipped with coupling inner thread 4, the tube body external screw thread
3 and coupling inner thread 4 use the long round thread of API 5B standards, 90 ° of right angle sealing shoulders 5 of setting in the middle part of box cupling endoporus.
Wherein, after the tubing and casing tube body 1 and box cupling 2 are tightened, 3 front end face of tube body external screw thread and box cupling right angle sealing shoulder
5 pairs of tops, into interference fit, interference volume=0.05mm-0.10mm.
Wherein, sealing shoulder 5 internal diameter in the oil casing collar right angle is consistent with tube body diameter of bore.
The utility model improves box cupling inner connecting structure, there is provided straight shoulder is interference fitted with external screw thread end face, makes it
Hermetic seal greatly improves the oil gas hole condition for more adapting to harsh environmental conditions, while because screw thread is using API standard screw thread, convenient for adding
Work and cost is greatly reduced, and can be exchanged with API screw threads, oil field is facilitated to use.
The above is only the preferred embodiment of the utility model, it is noted that for the general of the art
For logical technical staff, under the premise of the utility model principle is not departed from, several improvements and modifications can also be made, these change
The scope of protection of the utility model is also should be regarded as into retouching.
Claims (3)
1. a kind of economical high hermetic seal tubing and casing, which is characterized in that including tubing and casing tube body (1) and box cupling (2), tubing and casing pipe
Body end portion is equipped with tube body external screw thread (3)；Box cupling is equipped with coupling inner thread (4), spiral shell in the tube body external screw thread (3) and box cupling
Line (4) is using the long round thread of API 5B standards, 90 ° of right angle sealing shoulders (5) of box cupling endoporus middle part setting.
2. the economical high hermetic seal tubing and casing of one kind according to claim 1, which is characterized in that the tubing and casing tube body
(1) and after box cupling (2) tightens, tube body external screw thread (3) front end face with box cupling right angle sealing shoulder (5) to top, into interference fit, mistake
The amount of being full of=0.05mm-0.10mm.
3. the economical high hermetic seal tubing and casing of one kind according to claim 1, which is characterized in that the oil casing collar is straight
Sealing shoulder (5) internal diameter in angle is consistent with tube body diameter of bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721636138.6U CN207485373U (en) | 2017-11-30 | 2017-11-30 | A kind of economical high hermetic seal tubing and casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721636138.6U CN207485373U (en) | 2017-11-30 | 2017-11-30 | A kind of economical high hermetic seal tubing and casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207485373U true CN207485373U (en) | 2018-06-12 |
Family
ID=62472280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721636138.6U Active CN207485373U (en) | 2017-11-30 | 2017-11-30 | A kind of economical high hermetic seal tubing and casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207485373U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374522A (en) * | 2019-06-28 | 2019-10-25 | 中国石油天然气集团有限公司 | A kind of shale gas exploitation nipple |
-
2017
- 2017-11-30 CN CN201721636138.6U patent/CN207485373U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374522A (en) * | 2019-06-28 | 2019-10-25 | 中国石油天然气集团有限公司 | A kind of shale gas exploitation nipple |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104453738A (en) | Airtight seal sleeve joint | |
| CN207485373U (en) | A kind of economical high hermetic seal tubing and casing | |
| CN201322148Y (en) | High performance oil pipe hermetic seal threaded connection structure | |
| CN102086758A (en) | Integral-assembling type heat-insulating oil pipe connection structure | |
| CN200992958Y (en) | Dual shoulder anti-torsion joint | |
| CN207988966U (en) | A kind of special button-type joint of petroleum drill rod of hermetic seal | |
| CN104563904B (en) | Sealing connecting structure of casing of gas well | |
| CN104060946A (en) | Ultrahigh torsion-resistance metal airtight drill rod joint | |
| CN206329284U (en) | A kind of dual hermetic seal special buckle oil pipe of metallic elastic | |
| CN203531780U (en) | Highly-resistant double-circular-bead oil sleeve joint | |
| CN204045834U (en) | A kind of seal nipple | |
| CN209369742U (en) | A kind of tubing and casing Hermetical connecting structure | |
| CN102121353A (en) | Split assembly heat-insulating oil pipe connecting structure | |
| CN201943598U (en) | Split assembled heat-insulating oil tube connecting structure | |
| CN102704864B (en) | Shale gas exploitation nipple | |
| CN207278202U (en) | Extreme line casing thread connector | |
| CN102996079A (en) | Tubular air sealing screwed joint and application thereof | |
| CN201943599U (en) | Heat-insulation oil tube connecting structure for fixedly welding tube end inner tube user terminal | |
| CN207124121U (en) | Capacitance core linear sealing connector | |
| CN216811593U (en) | Semi-hermetic sealing heat-insulation oil pipe with special thread structure | |
| CN201915854U (en) | Integrated sleeving insulated tubing connection structure | |
| CN204060547U (en) | A kind of Oil/gas Well integrated connection thimble assembly | |
| CN205387913U (en) | Special knot connection structure is sealed to doublestage step | |
| CN204082030U (en) | A kind of air sealed threaded sleeve joint | |
| CN207485372U (en) | A kind of trapezoidal thread casing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |