Search and exploration of minerals is costly and risky business. The Ground Probing Radar (GPR) technology is highly accurate, speedy and cost efficient way to search and explore mineral resources more…
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Search and exploration of minerals is costly and risky business. The Ground Probing Radar (GPR) technology is highly accurate, speedy and cost efficient way to search and explore mineral resources more.
Поиск полезных ископаемых связан с высокими затратами и рисками. Технология радиолокационного зондирования недр (РЛЗ) обеспечивает поиск и разведку со 100% точностью, в разы дешевле и на порядки быстрее подробнее…
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High reliability and economic efficiency of the GRP method were confirmed in brown fields in Western Siberia and the Volga region. The average forecast accuracy on more than 600 hundred wells exceeds 90% compared with about 30% of seismic surveys in the same areas. In 2008-2011, at the Yuzhnoye Priobskoye and Zimneye fields, Gazpromneft-Khantos LLC drilled 213 wells based on the results of using the GRP method/ All 213 wells turned out to be productive. Production at the Yuzhnoye Priobskoye field increased from 6.7 million tons in 2007 to 11.3 million tons in 2011. Based on the recommendations, drilling of more than 30 wells was canceled. The total economic effect amounted to more than $200 mln.
When it comes to offshore exploration GPR Technology, due to great penetrating power of high frequency pulse signal, is far above presently used seismic methods in accuracy, time and cost efficiency.
An example of Geological Survey Profile done in 2017, detailing oil traps (black colored) and productive formations (grey colored), is given below.
Baltic Sea Offshore Survey (1.5-4 km depth)
The GPR method and equipment are in continuing development and refining. At present the GPR equipment is being modified to increase the accuracy of the hydrocarbons detection from 6 ft to 2 ft. New ground, sea and air drones are developed to increase productivity and cost efficiency. The software algorithms are being refined to decrease interpretation time of survey data and improve accuracy of 3D modelling and 2D forecasting.
In order to reduce risks for prospective clients and to confirm high accuracy of the GPR Technology we are ready to conduct a pilot survey profiling with payment due upon 90% concurrency with actual well logging data.
Work Procedure
Search and exploration of mineral deposits is carried out in three stages:
1st stage — probing. It is conducted from land, water or air. A regular grid is formed with a step of 35-50m with surveying along and across the site.
2nd stage — GPR data is processed and 3D models of the dielectric permittivity and effective resistance of ground formations are done. Then cutting of profiles, horizontal sections, construction of structural maps and forecast maps of oil-saturated thicknesses is carried out.
3rd stage — interpretation of 3D models results. At this stage, a whole range of factors are taken into account:
The final modeling involves comparison and refinement of the characteristics of the identified object and comparing them to well data if available. Based on the results of such a multi-stage work, preliminary maps are built, which give a high-quality vision of the distribution of oil saturated zones. After specifying the depth intervals, the final forecast maps with the quantitative characteristics of the oil saturated layers are drawn.
The GPR method is using a high-frequency signal with controlled parameters to form a field structure with unique parameters:
Summary. The GPR method allows to define the spatial and physical characteristics of productive layers based on interpretation of the received Dielectric Permittivity and Effective Resistivity data. The results of the works are highly accurate 2D forecast maps and 3D models of petroleum deposits allowing to perform prognostic quantification and qualitative assessment of the found petroleum reserves. This is unattainable for any other known methods of ground probing.
The GRP method can be used for prospecting and exploration of ore minerals by finding values of the dielectric permittivity constant of many ore minerals (Fe sulfides, Pb, Zn, Cu, Ni, Mo, Fe oxides, Ti, Sn, etc.). It can reveal the actual accumulations of industrially valuable minerals with high resolution and efficiency. The high resolving power of the radar is the most important competitive advantage compared to other geophysical methods, since ore mineralization often forms small-sized accumulations in the host rocks (veinlets, zones of disseminated dissemination. any range of depths suitable for mining (up to 5.5 km, for example, the Tau-Ton gold deposit in South Africa).
carried out from aircraft and sea vessels.
The radar detector signal passes through the water with practically no energy loss, which makes it possible to search for hydrocarbon deposits under the bottom on the shelf and in deep water. At the same time, bathymetric work is being carried out to map the bottom relief.
