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Wireless telemetry system BTS

(На сегодняшний день телесистема БТС не производится, выполняется только обслуживание и ремонт.)

“BTS” telemetry system provides operational control of the wellbore trajectory during inclined and horizontal drilling with hydraulic downhole engines in geological environment free of magnetic anomalies. Data transmission is performed via a wireless electromagnetic communication channel.

“BTS” system is available in two modifications depending on the bottom-hole assembly external diameter: “BTS-172” (BHA external diameter – 172mm) and “BTS-210” (210mm).

“BTS” is used for the following turbo and rotary drilling operations:

Measuring wellbore parameters (zenith angle and azimuth) in static as well as in dynamic;
Bottom-hole toolface orientation in case of the borehole azimuth or zenith angle are to be changed;
Bottom-hole toolface orientation in vertical wells during directional sidetracking;
Measuring natural gamma rays*;
Measuring temperature;
Measuring vibration;

*when the gamma module is attached;

“BTS” Technical specifications and operating conditions

Parameter	BTS-172	BTS-210
Environment temperature °С	+5 … +100	+5 … +100
Vibration range 10 … 300 Hz with vibration acceleration, m/sec²	≤ 300	≤ 300
Maximum hydrostatic pressure, МPа	60	60
Maximum thrust load, kN	1000	3000
Maximum torque, kN	40	60
Flow rate, l/sec	28…54 (64)*	24…64 (75)*
Threads and torque wrenches, kN∙m	МК150×6×1:8 18…21 З-147 32.0…35.0	3-171 40.0…45.0
Length (with non-magnetic collars), m, max	15.5	13.2
Weight**, kg	1500	2100
Measurement range (inaccuracy)
Zenith angle, degree	0…120 (±0,2)
Azimuth angle, degree	0…360 (±3 at Z=3…10; ±1 at Z=10…120)
Toolface, degree	0…360 (±2 at Z>3.2; ±10 at Z=0…3.2)
Natural gamma ray level, micro R per hour	0…250 (±10%)***
Temperature, ^оС	0…125 (±2)
Vibration, m/sec²	0…1200 (±10%)

* - severe conditions

** - depends on collar variation

*** - if gamma module MES-50 is applied