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Geosteering Drilling System

Brief Introduction:

Geosteering Drilling System is configured with CAIMS, WLRS, CGMWD and CFDS. Besides the steering function, it is capable of measuring engineering and geological parameters while drilling.

Measure near-bit geological parameters (Bit Resistivity, Directional Resistivity, Azimuth，Nature Gamma Ray) and near-bit engineering parameters (Inclination, Tool Face) and send the information by wireless transmission technology to the receiving system through steering screw motor.

Near-bit information is integrated into the positive pulser in CGMWD by data connection system, and CGMWD is used as information transmission channel to send the measured downhole information (partial) to surface processing system as the evidence for direction decision.

Downhole motor is used as the steering tool. CFDS processes and analyzes real time near bit geological parameters to interpret and judge nature of fresh footage, then, undertake necessary re-adjustment design, policy making and control while drilling, direct the steering tool into objective oil/gas layer or decide to continue drilling in the oil layer.

Applicable to geological exploration directly and can increase the discovery rate of exploration.

Suitable for the development well in complicated formation or thin oil layer and can increase the probability of penetration and recovery rate.

Reduce drilling costs, increase production and economic profit

No.Product codeMatl. CodeName ModelTool ODMaximum Tool ODBorecole SizeBuilt AbilityMaximum TemperatureType of Pulse GeneratorData Transmission RateDownhole Short-range Data Transmission RateContinus Operating TimeNear-bit Measurement ParameterMaximum PressureMaximum ImpactMaximum VibrationMotor Flow RateMotor Pressure DropMotor RotationMotor TorqueMaximum Motor TorqueRecommended WOBMaximum WOBMotor PowerLength of Bit Resistivity Sensor to Bit BoxLength of Directional Resistivity Sensor to Bit BoxLength of Natural Gamma Sensor to Bit BoxLength of Deviation/Tool Sensor to Bit BoxCAIMS LengthCGMWD LengthTotal Length of CGDS-I
137030175Geosteering Drilling SystemCGDS172NBf172 mmf190 mmf216 to f244mm(8-1/2² to 9-5/8²)Middle and Long Radius125°CMud Positive Pulse5 bit/s200 bit/s200 hBit Resistivity, Azimuthal Resistivity,Azimuthal Nature Gamma, Inclination, Tool Face140 MPa10000 m/s2(0.2ms,1/2sin)150 m/s2(10 to 200Hz)19 to 38 L/s3.2 Mpa100 to 200 r/min3600 Nm5600 Nm80 kN160kN38.3 to 76.6kW2.05 m2.53 m2.70 m2.85 m8.4 m7.85 m18.2 m
237030175Geosteering Drilling SystemCGDS203NBf203 mmf215 mmf241 to f311mm(9-1/2² to 9-5/8²)Middle and Long Radius125°CMud Positive Pulse
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