Patent ID: 9617789
Date: 2017-04-11
CPC Classifications: E21B

Claim:
1. A motor assembly comprising: a power section extending between a first end and a second end and comprising a housing with an outer diameter; a bearing assembly section disposed downhole from the second end of the power section and comprising a housing with an outer diameter; and a crossover sub disposed between the power section and the bearing assembly section, the crossover sub comprising: wherein a ratio of the outer diameter of the housing of the power section to the outer diameter of the housing of the bearing assembly section is approximately 0.7307 to approximately 0.8709, and wherein the first end of the crossover sub has an outer diameter smaller than an outer diameter of the second end of the crossover sub, and wherein a ratio of the outer diameter of the first end of the crossover sub to the outer diameter of the second end of the crossover sub is approximately 0.7307 to approximately 0.8709.