FIELD: drilling of soil or rock.
SUBSTANCE: group of inventions refers to the field of drilling wells by downhole motors. Downhole motor comprises a continuously executed stator housing of the power section, having a first end, a second end and an inner cavity containing a row of stator teeth and a housing portion extending therethrough, said stator teeth extending from the first end of the stator housing to the first end of the transition section, wherein said body portion extends from the second end of the transition portion to the second end of the stator housing of the power section, said transition portion forms a single combination with the stator teeth; and a rotor assembly comprising a power section rotor, having rotor teeth, which must be completely disposed in the inner cavity, wherein said rotor teeth must cooperate with one or more stator teeth to rotate the rotor assembly when the drilling fluid under pressure passes through the inner cavity.
EFFECT: fatigue strength of the downhole motor is increased.
21 cl, 6 dwg
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|
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| HYDRAULIC DOWNHOLE MOTOR | 2014 |
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| DEVICE AND METHOD OF CONTROLLING OR LIMITING ROTOR ORBIT IN SCREW ENGINES OR PUMPS | 2013 |
|
RU2605475C2 |
