FIELD: oil and gas industry.
SUBSTANCE: this group of inventions relates to method and gage to check self-locking thread envisaged close to the end of pipe component used for exploration and operation of hydrocarbon-producing wells, at that the above self-locking thread has lead with permanent width and thread vee width, which is increased towards direction of the farthest surface of the pipe component; it is distinguished by the fact that at self-locking thread tightening the gage can move to locking position, herewith the above position is marked by a marking and compared with reference locking position. At that external and internal thread turns have dovetail type shape supplementing thread profile.
EFFECT: possibility to check self-locking threads, improving reliability.
19 cl, 9 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2700017C2 |
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|
RU2715569C2 |
| DEVICE FOR DETERMINATION OF QUALITY OF ASSEMBLY OF THREADED JOINT OF PIPES | 2017 |
|
RU2741901C2 |
