Inventors:
Brian P. Jarvis - Bristol, GB
Nigel Wilcox - Bristol, GB
Brian Williams - Bristol, GB
Lance Underwood - Morrison CO, US
William Murray - Tomball TX, US
Peter Thomas Cariveau - Spring Valley TX, US
Geoffrey Downton - Stonehouse, GB
Lawrence Lee - Houston TX, US
Shunetsu Onodera - Cheltenham, GB
Daniel Alvarado - Houston TX, US
Maxim Pushkarev - Cheltenham, GB
Gokturk Tunc - Houston TX, US
Andrei Plop - Houston TX, US
Warren Askew - Houston TX, US
Assignee:
SMITH INTERNATIONAL, INC. - Houston TX
International Classification:
E21B 4/02, E21B 7/08, F03C 2/08, E21B 7/00
US Classification:
175 61, 175 73, 175 57, 175107, 418 48
Abstract:
A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.