Научно-технический журнал

«Onshore and offshore oil and gas well construction»

ISSN 0130-3872

Onshore and offshore oil and gas well construction
№11 (347), November 2021
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Use of screw downhole motors with hydro-impulsive section

UDC: 621.24
DOI: 10.33285/0130-3872-2021-11(347)-44-47

Authors:

BIKTIMIRKIN EVGENY YURIEVICH1,2,
DEMYANOV EGOR ALEXEEVICH1,
MOZGOVOY GEORGY SERGEEVICH2

1 JSC "Orenburgneft, Buzuluk, Russian Federation
2 Samara State Technical University, Samara, Russian Federation

Keywords: PDM; downhole motor; pressure pulse generator; hydro-impulsive section; drilling

Annotation:

The paper describes the use of downholes crew motors with hydraulic impulsive spindle section. It is supposed to use a downhole screw motor, consisting of a check valve, a power pair with a profiled stator and a spindle section (cardan joint and output shaft). The difference from a conventional engine is the fact that an intermediate housing is installed between the cardan and the output shaft, in which the flow sleeve is rigidly fixed, which is provided with grooves along the inner surface. An additional hollow shaft (pressure pulse generator) is located coaxially in the flow sleeve.