Measurement device and method of copper-nickel mineral product grades in well

Abstract

The invention discloses a measurement device and method of copper-nickel mineral product grades in a well. The device comprises an underground device and a ground data processing device. The underground device is connected with the ground data processing device through a cable. The underground device comprises a housing body which is in the shape of a titanium steel cylinder. A D-T controllable neutron source, a tungsten shielding body, a CLYC double-particle detector and a remote metering short section are down-up successively arranged in the housing body. The method mainly comprises following steps of firstly, according to a measured capturing gamma spectrum, selecting gamma counting information in a high energy section; calculating gamma yield of different metal elements; calculating the ratio value of the gamma yield and thermal neutron counting; eliminating effects on the gamma yield imposed by unstable fluxes of the thermal neutrons; and finally, calculating metal mineral product grades according to a linear relation between the ratio value of the gamma yield-thermal neutrons and the metal mineral product grades. According to the invention, metal mineral product grades with the continuous depths can be provided in the well; quantification of metal mineral product exploration is facilitated; and efficiency of the metal mineral product exploration is improved.

Description

technical field [0001] The invention relates to the field of metal mineral exploration, in particular to an in-well copper-nickel ore level measuring device and method. Background technique [0002] At present, the means of metal mineral exploration mainly include airborne geophysical prospecting, ground geophysical prospecting and comprehensive logging methods. Using these methods, we can make judgments on the possible buried position, scale and occurrence of ore bodies, and understand the distribution and extension of ore bodies underground. . For the determination method of metal mineral products, systematic sampling and analysis of ore bodies and surrounding rocks are often used to understand the material composition of ore bodies and surrounding rocks. [0003] Prompt gamma neutron activation analysis technology (PGNAA) is often used in the online calculation of metal minerals on the ground. During the measurement process in the well using PGNAA technology, the neutron...

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Problems solved by technology

Therefore, in the process of using the energy window method to obtain the characteristic capture gamma counts of different elements, it is susceptible to the influence of the characteristic gamma rays between each other. In particular, the capture gamma rays produced by the three metal elements of iron, copper, and nickel are all concentrated At 7.0-9.5MeV, it will have a greater impact on the calculation results of gamma output

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