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LWD SYSTEM

CОRVЕТTE-3

DESIGNED FOR LOGGING

IN THE DRILLING PROCESS

• Extended suite of logging methods;

• High data-transmission speed in real time;

• Increased measurement accuracy;

• Reduced distance between sensor measure point and drill bit;

• Increased well run time.

Corvette-3 is a new generation LWD system with measuring probes placed in the wall of the load-bearing housing to increase measurement accuracy. The system has reduced length, enabling assembly and testing of the system, as a part of the BHA, in a maintenance shop.

 

The system is electrically powered by an alternator, which makes it possible to increase both trip duration and operational characteristics. The development of Corvette-3 aimed to the versatility of the system. Technical requirements include the capability of operating the equipment at high pressures and temperatures.

Corvette-3 offers formation evaluation in terms of reservoir properties. For this purpose, base configurations include probes for measuring the density and porosity of rocks, their natural gamma-ray intensity, and electrical resistivity. The base also has a bed boundary detection probes to provide the best steering direction in various types of reservoirs.

 

Corvette-3 system includes a modulator, a high-speed transmitter with a data transfer rate of 4 bps via the mud-pulse telemetry. Such a speed of information transmission enables sending image logs to the surface without compromising the rate of drilling bit penetration and the quality of real-time logging measurements.

Modulator

2m

MRK

Density Neutron Module

MSK

Integrated Loggin Module

Alternator

1,3m

3,1m

4,5m

Battery module 2,2m

Telemetry module 

0,5m

Connecting Module

1,3m

Мodulator

Data Transmission

Rate: 4 bps.

MRK

Density Neutron

Module 

Azimuthal water-saturated porosity   

Azimuthal bulk density     

Photoelectric absorption index (photoelectric factor)  

Borehole diameter

MSK

Integrated

Logging Module

Bed boundary imaging.

Wave propagation resistivity.

Annular pressure (PWD).

Directional survey.

Azimuthal gamma ray.

Alternator

Power 

100 W.