CN201983721U - Ring gauge for measuring external thread parameter of sealing joint for gas well - Google Patents
Ring gauge for measuring external thread parameter of sealing joint for gas well Download PDFInfo
- Publication number
- CN201983721U CN201983721U CN2011200391469U CN201120039146U CN201983721U CN 201983721 U CN201983721 U CN 201983721U CN 2011200391469 U CN2011200391469 U CN 2011200391469U CN 201120039146 U CN201120039146 U CN 201120039146U CN 201983721 U CN201983721 U CN 201983721U
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- gauge
- ring gauge
- external thread
- parameter
- gas well
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Abstract
The utility model relates to a ring gauge for measuring an external thread parameter of a sealing joint for a gas well. The ring gauge comprises a thread gauge, a smooth ring gauge, at least three positioning screw rods and reset springs, wherein the quantity of the reset springs is accordant with that of the positioning screw rods; the end face of the small end of the threaded gauge is provided with threaded holes of which the quantity is accordant to that of the positioning screw rods and which are uniformly distributed circumferentially; the smooth ring gauge is provided with positioning holes of which the quantity is accordant to that of the positioning screw rods and which are opposite to the threaded holes; the positioning screw rods pass through the positioning holes and the reset springs in sequence, and are then screwed into the threaded holes; the internal thread parameter of the threaded gauge is matched with the external thread design parameter of the sealing joint for the gas well; and the smooth matching surface parameter of the smooth ring gauge is matched with the external thread sealing surface design parameter of the sealing joint for the gas well. Due to the adoption of the ring gauge, the technical problem of inconvenience in measuring an external thread pitch and a sealing surface parameter by using the conventional threaded gauge is solved. The ring gauge is convenient to use, has a stable and reliable measuring result, and is well suitable for field detection.
Description
Technical field
The utility model belongs to oil, Gas Industry oil well pipe thread parameter measuring technical field, is specifically related to gas well with sealing adaptor external thread parameter measurement ring gauge.
Background technology
In oil, the construction of natural gas fields, the sleeve pipe that is adopted is twisted by screw thread and is connect the string of casing of forming in succession, and screw thread is the weakest link in the tubing string, and its structural intergrity, sealing integrity and reliability have a strong impact on the safety in production and the tubing string life-span in oil field.The external thread external thread is along with the increase of the mankind to energy demand, and increasing high temperature, high-pressure gas well have obtained development and utilization.And in the development and utilization process of high temperature, high-pressure gas well, increasing special thread casing joint has obtained widespread use, and especially not only reliable but also economical and practical air-tight seal screw joint is used widely.At oil well with high temperature, high pressure characteristics, CNPC Tubular Goods Research Institute develops the gas well sealing adaptor of a kind of employing-5 ° torque shoulder and two-stage hermetically-sealed construction, guaranteed that shoulder has lower contact stress, can prevent the stress corrosion and the incompressible inefficacy of shoulder; The two-stage primary seal has significantly improved sealing integrity.This gas well is to guarantee the safe and reliable important step of string of casing with the measurement of the external thread parameter of sealing adaptor.Because gas well needs to measure tight distance of external thread and sealing surface parameter with the singularity of sealing adaptor external thread parameter, still, existing thread profile gauge can not accurately be convenient for measuring this parameter.Therefore, need a kind of gauge that accurately is convenient for measuring tight distance of this external thread and sealing surface parameter.
Summary of the invention
The utility model purpose provides a kind of gas well that can measure tight distance of external thread and sealing surface parameter simultaneously sealing adaptor external thread parameter measurement ring gauge, and it has solved the technical matters that existing thread profile gauge can not accurately be convenient for measuring tight distance of external thread and sealing surface parameter.
Technical solution of the present utility model is:
A kind of gas well is with sealing adaptor external thread parameter measurement ring gauge, and its special character is: it comprises the smooth ring gauge of a thread profile gauge 2,5, at least three positioning screws 6, the back-moving spring 4 consistent with positioning screw quantity; The small end end face of described thread profile gauge is provided with the threaded hole 7 of and circumference uniform distribution consistent with positioning screw 6 quantity, have consistent on the described smooth ring gauge 5 with positioning screw quantity and with threaded hole position corresponding positioning hole 8, described positioning screw 6 is screwed in the threaded hole 7 after passing pilot hole 8, back-moving spring 4 successively; The inner thread parameter of described thread profile gauge 2 and gas well are complementary with the external thread design parameter of sealing adaptor; The smooth mating surface parameter of described smooth ring gauge 5 and gas well are complementary with the external thread sealing surface design parameter of sealing adaptor.
Above-mentioned ring gauge comprises that at least two are tightened handle 3, describedly tightens the lateral surface that handle 3 is vertically fixed on thread profile gauge 2.
Above-mentioned quantity of tightening handle 3 is two.
The quantity of above-mentioned positioning screw 6 is four.
The technique effect that the utlity model has is:
The utility model adopts thread profile gauge and smooth ring gauge complex method, wherein thread profile gauge can accurately be measured the tight distance of external thread, guarantee the switching performance that it is superior, smooth ring gauge can accurately be measured the comprehensive parameters of external thread sealing surface, guarantees its excellent sealing performance.So the utility model carries out a gauge and operates the measurement that just can finish tight distance of external thread and sealing surface parameter, easy to use, measurement result is reliable and stable, and can be applicable to on-the-spot the detection preferably.
Description of drawings
Fig. 1 is the utility model gas well structural representation of sealing adaptor external thread parameter measurement with ring gauge, and the smooth ring gauge among the figure is in by tight state;
Fig. 2 is the structural representation that smooth ring gauge of the present utility model is in releasing orientation;
Wherein: 1-is with externally threaded string of casing; The 2-thread profile gauge; 3-tightens handle; The 4-back-moving spring; The smooth ring gauge of 5-; The 6-positioning screw, 7-threaded hole, 8-pilot hole.
Embodiment
As shown in Figure 1, the utility model comprises the smooth ring gauge of a thread profile gauge 2,5, four positioning screws 6, four back-moving springs 4; The small end end face of thread profile gauge is evenly distributed in four threaded holes 7, has on the smooth ring gauge 5 to be screwed in the threaded hole 7 after passing positioning hole corresponding 8, back-moving spring 4 successively with threaded hole position 8, four positioning screws 6 of corresponding four pilot holes; The inner thread parameter of thread profile gauge 2 and gas well are complementary with the external thread design parameter of sealing adaptor; The smooth mating surface parameter of smooth ring gauge 5 and gas well are complementary with the external thread sealing surface design parameter of sealing adaptor.For convenience thread profile gauge is screwed on the measured sleeve tubing string, also can be vertical and be symmetrical arranged two and tighten handle 3 at the lateral surface of thread profile gauge 2.
During measurement, with thread profile gauge 1 by spanner or tighten on the external thread that handle 3 tightens to the measured sleeve tubing string.After tightening, push away smooth ring gauge 5 with hand to the thread profile gauge direction, the smooth mating surface of smooth ring gauge 5 matches with the external thread sealing surface, hold out against cooperation after, hand continues by tight smooth ring gauge, uses pit gauge to measure thread profile gauge small end end face and smooth ring gauge small end end face distance d
1And smooth ring gauge small end end face and external thread sealing surface end face apart from d
2With d
1Can draw screw thread closely apart from P by the following formula conversion
1:
P
1＝d
1-d
2
d
2The design ideal value be zero, the established standards that surpasses less than normal bigger than normal all thinks defective.By contrast d
2Size can determine whether the size of external thread sealing surface suitable.
After the measurement, the openhanded slip ring rule 5 of opening the light, back-moving spring 4 initial position that just smooth ring gauge 5 can be rebounded, as shown in Figure 2.Re-use spanner or tighten handle and unload ring gauge, finish one-shot measurement.
Claims (4)
1. a gas well is characterized in that with sealing adaptor external thread parameter measurement ring gauge: it comprises a thread profile gauge (2), a smooth ring gauge (5), at least three positioning screws (6), the back-moving spring (4) consistent with positioning screw quantity; The small end end face of described thread profile gauge is provided with the threaded hole (7) of and circumference uniform distribution consistent with positioning screw (6) quantity, have consistent on the described smooth ring gauge (5) with positioning screw quantity and with threaded hole position corresponding positioning hole (8), described positioning screw (6) is screwed in the threaded hole (7) after passing pilot hole (8), back-moving spring (4) successively; The inner thread parameter of described thread profile gauge (2) and gas well are complementary with the external thread design parameter of sealing adaptor; The smooth mating surface parameter of described smooth ring gauge (5) and gas well are complementary with the external thread sealing surface design parameter of sealing adaptor.
2. gas well according to claim 1 is with sealing adaptor external thread parameter measurement ring gauge, and it is characterized in that: described ring gauge comprises that at least two are tightened handle (3), describedly tightens the lateral surface that handle (3) is vertically fixed on thread profile gauge (2).
3. gas well according to claim 2 sealing adaptor external thread parameter measurement ring gauge, it is characterized in that: described quantity of tightening handle (3) is two.
4. according to claim 1 or 2 or 3 described gas wells sealing adaptor external thread parameter measurement ring gauge, it is characterized in that: the quantity of described positioning screw (6) is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200391469U CN201983721U (en) | 2010-12-08 | 2011-02-15 | Ring gauge for measuring external thread parameter of sealing joint for gas well |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020648391 | 2010-12-08 | ||
| CN201020648391.5 | 2010-12-08 | ||
| CN2011200391469U CN201983721U (en) | 2010-12-08 | 2011-02-15 | Ring gauge for measuring external thread parameter of sealing joint for gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201983721U true CN201983721U (en) | 2011-09-21 |
Family
ID=44611180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200391469U Expired - Fee Related CN201983721U (en) | 2010-12-08 | 2011-02-15 | Ring gauge for measuring external thread parameter of sealing joint for gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201983721U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482827A (en) * | 2014-12-03 | 2015-04-01 | 西安三环科技开发总公司 | Sealed thread connector outer thread parameter measuring and aligning tool |
-
2011
- 2011-02-15 CN CN2011200391469U patent/CN201983721U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482827A (en) * | 2014-12-03 | 2015-04-01 | 西安三环科技开发总公司 | Sealed thread connector outer thread parameter measuring and aligning tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20140215 |