DEVICE FOR MEASURING DISTANCE AND DETERMINING DIRECTION BETWEEN TWO DRILLED WELLS (VERSIONS); METHOD FOR MEASURING DISTANCE AND DETERMINING DIRECTION BETWEEN TWO DRILLED WELLS; SOLENOID ASSEMBLY OF DEVICE FOR MEASURING DISTANCE AND DETERMINING DIRECTION BETWEEN TWO DRILLED WELLS Russian patent published in 2012 - IPC E21B47/22 G01V3/26 

FIELD: oil and gas industry.

SUBSTANCE: device for measuring the distance and determining the direction between two drilled wells includes solenoid assembly, magnetic field sensor, electronic circuit of determination of spatial coordinates of magnetic field sensor and processor for determining the distance and direction between the first and second points as per measured spatial coordinates of sensor and measured vector components of magnetic field and as per the specified value of characteristic magnetic field of solenoid. At that, solenoid assembly is installed in primary chosen point in the first drilled well having the known deviation angle from vertical and known direction at the first chosen point, and magnetic field sensor is located at the second chosen point in the second well and provided with possibility of measuring three vector components of characteristic magnetic field of solenoid at the second point. Besides, device includes well electric circuit for supply of electric current to solenoid assembly, device for remote supply of start-up signal to solenoid assembly and electronic circuit in solenoid assembly, which is capable of operating in busy waiting mode of the above start-up signal.

EFFECT: improving the accuracy of the well making during well drilling process.

36 cl, 10 dwg