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measure while drilling / oil exploration tool
measure while drilling / oil exploration tool

MWD of gas drilling and mixed medium drilling wells; Vertical drilling control; MWD of shallow formations and coal seam gas

System Description

The system is made up of downhole tools and surface equipment. The downhole tools connected in the drilling-string can measure directional parameters and GR parameters, then send them to the surface. The waves are caught by the Surface Receiver. After amplification, de-noising and digital data acquisition, the data can be recovered, displayed and recorded by the computer, the directional parameters are displayed on the driller’s monitor.  

Application Area

 MWD of gas drilling and mixed medium drilling wells.  

 Vertical drilling control.  

 MWD of shallow formations and coal seam gas wells.  

 Horizontal wells and directional wells that suitable for electromagnetic wave transferring.  

Parameters Measured:   Well deviation, azimuth, tool face, temperature, GR, resistivity, annular pressure, etc.  

Technical Specifications  

Measure range and accuracy  

Deviation                                                 0~180° ±0.2°  

Azimuth                                                   0~360° ±1.5°  

Tool face                                                  0~360° ±1.5°  

GR                                                           0~500API ±7%  

Temperature                                            -25~125°C  

Pressure                                                   105MPa  

OD                                                           48mm  

Drill Collar OD                                           4.75”, 6.5”, 7”  

Carrier wave                                             2Hz~12.5Hz  

Baud rate                                                  0.5~6.25 bit/s  

Formation resistivity                                   2~1000Ω·m  

Continues working time                              200h

measure while drilling / oil exploration tool

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