Obschestvo S Ogranichennoi Otvetstvennostyu “Perfobur”

Perfobore Inc.

Alexander Vasilievich Lyagov

Yang Yao

Ilia Alexandrovich Lyagov

Dmitry Fedorovich Baldenko

Ilya Alexandrovich Lyagov

Fedor Dmitrievich Baldenko

The utility model relates to internal cycloidal gear mechanisms and can be used in various branches of mechanical engineering as working members of hydraulic machines (pumps and engines), compressors, internal combustion engines, as well as in planetary gearboxes, in particular in technical systems for drilling and repairing oil and gas wells. The problems to be solved by the utility model include the improvement of the quality of the process of designing working members having a cycloidal tooth profile, as well as the substantiation of the conditions for modifying cycloidal face profiles (by choosing the required combination of dimensionless gearing coefficients) in order to achieve the maximum or minimum open area of the gerotor mechanism having a different kinematic ratio.

Working members of a rotary hydraulic or pneumatic machine

The invention relates to the field of drilling. A packed-hole assembly comprises a drill bit, and a positive displacement motor having a bending unit for deviation by a tilt angle f, and further comprises a rotation module and a hinge module which are rigidly connected to one another, to drill pipes and to the motor by threaded connections. The rotation module consists of a fixed shaft with a central channel and axial openings for drilling fluid, and a rotating body with radial channels which is mounted on cageless rolling contact bearings such as to be capable of circular movement as a result of the reactive force of drilling fluid flowing into the annulus of the borehole through the axial openings in the shaft, the space between the shaft and the rotating body, and the radial channels in turn. The hinge module consists of two half bodies connected to one another by a hinge such as to be capable of rotating freely in an apsidal plane by an angle e=f, restricted by cams, wherein at least one half body is provided with centering ribs. The result is an increase in penetration rate and bit run rate.

Drilling assembly with a small hydraulic downhole motor

Growing community of inventors

Ufa, Russia

Alexander Vasilievich Lyagov