Hungarian hydrocarbon resources are registered by the Mining and Geological Survey
of Hungary (MBFSZ), in accordance with the Mining Act (Act XLVIII. of 1993 on mining).
Data supply to the Hungarian State Mineral Raw Material and Geothermic Energy Resources
Registry is based on the obligatory yearly data supply of mining contractors; MBFSZ
produces yearly datasets from them.
Information contained in the hydrocarbon register contains information on units referred
to hydrocarbon reservoir levels field by field. This registry contains data related
to already discovered, explored hydrocarbon accumulations. The register database contains
data of hydrocarbon quantities for each and every reservoir as follows: resource initially
in place, initially recoverable resource, summarised production, production of the
actual year, and the recoverable resource as of January 1. These data and information
sets are separately given for conventional crude oil, free natural gas, gas cap gas,
dissolved gas, CO2 gas and for unconventional gas and condensate resource quantities.
Besides resources data, the registry contains basic parameters for crude oil and natural
gas, such as their composition, along with fundamental parameters of the reservoir
such as the depth of oil-water, gas-water, gas-oil contact boundary compared to relative
sea level, porosity, permeability, gas- and oil saturation, besides other information
required for mineral resource estimation. Also provides data about the quality of
reservoir rock, the mineral composition and physical parameters of its reserved fluid
The register contains a number of geological data on the reservoirs and fields that
provide valuable information on the quantitative changes in the domestic hydrocarbon
resources, the quality composition of the stored fluids, and the physical properties
of the reservoir rocks. Based on the statistical processing of the data, estimates
can be made for the amount of oil and natural gas can be discovered in the future,
and the analysis of hydrocarbon geological data helps to understand the Hungarian
petroleum systems and to plan future exploration.