Equipment for non-seismic methods of geological exploration

The upgraded single-channel proton magnetometer MINIMAG-M is intended to measure the magnetic induction vector module of the geomagnetic field (T) in performance of terrestrial magnetometric surveys in prospecting and exploration of mineral deposits, as well as for the detection of other hidden magnetized objects. The tool is also applicable as a standalone stationary recording magnetometer (SRM) with programmable cycle of operation at maximum speed of one measurement per 2 seconds. The procedure of the tool control and the operation reliability is significantly facilitated as compared with previously produced model of MINIMAG. It is equipped with more contrasting LCD indicator as a visual display, which active area in one and a half bigger that the area of MINIMAG display.

The digital indication of the measurement result is complemented by a graphical display of the logged field. The memory capacity was increased by a factor of 8, which practically does not limit the autonomy of its operation, both in the field magnetometer and SRM modes. The data output from the magnetometer memory is available in both RS-232 format and modern USB-code. To improve the convenience of survey performance by a single operator the magnetometer is equipped with a remote start button. In terms of basic metrological and operational characteristics MINIMAG-M is not inferior to the best foreign equipment of the corresponding class, and it is significantly cheaper in terms of cost. The industrial production of the portable proton magnetometer MINIMAG-M has been conducted since 2010.

Development of inductive sensors and magnetotelluric stations by experts of Geologorzvedka is based on many years of experience of work in this area by different groups of researchers. Insofar, a line of pilot inductive sensors IMS-007 - IMS-011 has been developed in cooperation with VEGA.

Terrestrial magnetotelluric station VMTU-10

A prototype of terrestrial magnetotelluric station VMTU-10 has been developed and fabricated on the basis of highly sensitive magnetic sensors. VMTU-10 station consists of 5-channel data recorder with 24-bit ADC and a sampling interval from 1 to 3,000 counts per second, 4 inductive magnetic sensors (ad libitum: IMS-007M, IMS-008, IMS009 and IMS-010), GPS antenna, connection cables and transportation package.

Seabed magnetotelluric station

Currently, the experts of Geologorazvedka are engaged in development of the equipment to perform the marine operations with application of magnetotelluric sounding method (MTS). Today, the development of underwater magnetotelluric technology is one of the most promising areas. The electroprospecting methods, including MTS, are available in plans of all large Russian and international companies operating offshore and in inland waters. There is practically no national offshore MTS equipment, the foreign manufacturers do not sell their equipment and prefer to render the services. The experts from Geologorazvedka have elaborated the concept and options for development of the seabed magnetotelluric stations for the sea depths from the first meters to 1-1,5 km.