Patent ID: 11879297
Assignee: REFLEX INSTRUMENTS ASIA PACIFIC PTY LTD
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A thread formation for coupling downhole tools, the thread formation being a multi-start thread and comprising
a first thread having a first thread start located in an axially tapered part of the first thread, the axially-tapered part of the first thread cut short by a circumferential angle α;
a second thread having a second thread start located in an axially tapered part of the second thread, the axially-tapered part of the second thread cut short by a circumferential angle β;
wherein the first thread start is operatively rotationally in advance of the second thread start;
wherein the circumferential angle β is greater than the circumferential angle α; and
wherein the first thread is configured to at least partially engage with a complementary thread formation on a complementary downhole tool before the second thread engages within the complementary thread formation.