РУС-ГМ-195 — собственная оригинальная разработка НПП «БУРИНТЕХ»

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RSS-GM-195

RSS-GM-195 has no analogues in the world and more than 90% consists of Russian components

Rotary steerable systems are one of the most demanded technologies for working with hard-to-recover oil and gas reserves

The reliability of our system is confirmed by repeated tests

Launch video

Hydromechanical rotary-steerable system RSS-GM-195 is a proprietary original development of “BURINTEKH”, Ltd protected by patents. The principle of operation is based on hydromechanics without using complex electric drives and electronics. Compatible with widely used MWD.

System is designed for steerable drilling directional and horizontal wells with diameters from 220,7 to 222,3 mm.

RSS – rotary-steerable system
GM – hydromechanical principle of action
195 – nominal outside diameter of body in mm

Rotary steerable system includes:

Geostationary body, which does not rotate during directional drilling, including toolface and body centralizer.
Electronic module with a magnetic tag that allows tracking the orientation of the body during directional drilling.

The toolface unit consists of stabilizing and deflecting slips.

Rotary-steerable system RSS-GM-195 has two modes of operation:

Hold mode - straight drilling mode. In this mode the shaft is engaged with the body, the deflecting slips are disabled.

By reducing the flow rate to the minimum values and then resuming the flow rate to the operating values, a sequential switch is made to the mode – buildup.

The operating mode from the wellhead is determined by the change in differential pressure in the discharge line by 10-20 atmospheres at a constant operating flow. Differential pressure in buildup mode is always greater than the differential pressure in hold mode.

In buildup mode the deflecting slips move out and the shaft is disengaged from the body. The deflecting slips resting against the wellbore wall keep the body orientation from turning and deviate the well path.

Features and advantages of the rotary-steerable system RSS-GM-195:

Compatibility with all types of MWD systems with pulser-up position;
Fully hydromechanical toolface principle of operation;
Simple principle of changing operating modes and orienting the direction of drilling;
Max dogleg severity per 10 meters of meterage is 2.5 degrees;
The standard size of the used bits is 220,7 – 222,3 mm.

Body OD, mm	195
Min OD of closed deflecting slips, mm	216
Deflecting slips output, mm	12
Body centralizer OD, mm	217
Total length, mm	4450
Lower arm length, mm	760
Total weight, max, kg	850
Max dogleg severity, 10m, deg.	2,5
Min inclination for electronics module operation, deg.	15
Time of operation mode switching, s	40-50
Effective flow rate range, l/s	36-43
Nominal flow rate, l/s	42
Max permissible operating flow rate, l/s	44
Max permissible operating flow rate, l/s	16
Nominal flushing fluid density, kg/m3	1200
Nominal flushing fluid density, kg/m3	1500
Bit nozzles TFA, mm²	774
Nominal pressure drop at tool level in hold mode, atm	55
Nominal pressure drop at tool level in build-up mode, atm	70
Max permissible pressure drop at tool level, atm	90
Chloride ions content in mud, max, g/l	190
Max permissible operating temperature, °C	125
Max permissible top drive revolutions, rpm	200
Tensile load dangerous for tool integrity, kN	2000
Max permissible operating axial load, kN	300
Max permissible torque, kN*m	20
Bottom tool joint to bit per GOST 28487-2018, box	З-117
Top tool joint to tool per GOST 28487-2018, box	З-133
Recommended make up torque Z-117, kN*m	15-20
Recommended make up torque Z-133, kN*m	20-30
Bit diameter, mm	220,7…222,3