to a gamma beta sensor 68 a lead directional restrictor 64 directs the gamma ray beams 66 lead cover 67 and lead protection cover 63 protect nearby users from the gamma ray beams 66 and reduce the background gamma ray beams 66 to reduce background noise in operation a combination of methods may be used to obtain specific measurement from combination of sensors described above this combination of measurements data related to the same material sample is further processed to solve the required problem or obtain the basic physical and petrophysical properties a first method natural gamma consists of obtaining the natural gamma radiation properties of substrata formations through measuring the drilling cuttings flow by means of gamma rays receiver 12 shielded by lead shield 19 from external radiation background the sensor is measuring the radiation of specific formation these properties are factor of composition of the formation and this information is used for further processing a second method natural beta consists of obtaining the natural gamma radiation properties of substrata formations through measuring the drilling cuttings flow by means of beta rays receiver 13 the shielded by lead shield 19 from external radiation background the sensor is measuring the radiation of specific formation these properties are factor of composition of the formation and this information is used for further oil and gas industry a third process sonic consists of obtaining the travel time from source 42 to sensors 43 and 44 and then.