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Machine Learning Applications in the Petroleum Industry
Published in Muhammad Asif, Handbook of Energy Transitions, 2023
Ahmed Abdulhamid Mahmoud, Salaheldin Elkatatny, Abdulazeez Abdulraheem
Reservoir permeability is a rock petrophysical property that measures the ability of the formation rocks to transmit fluids. Accurate prediction of reservoir permeability is necessary since this property determines the mobility of the hydrocarbons through reservoir rocks, and hence, the ability to produce hydrocarbons after drilling and completing the drilled wells. Estimation of permeability in the laboratory from retrieved core samples is accurate but costly and time-consuming. Relative permeability is a property that determines how the rock will enable the flow of one fluid in case of the presence of more than a fluid inside the pore spaces.
Exploration and Geology
Published in Nwanosike-Warren Quinta, Oil and Gas Engineering for Non-Engineers, 2022
There are many types of geoscientists with distinct specialties. They include the following:Geophysicist – Determines trap size through remote sensing methods including seismic, gravity, magnetic, and electrical methods. This is done to assess potential oil and gas yield. Geophysicists typically work in exploration or research.Petrophysicist – Analyzes the physical and chemical properties of rocks and the fluids in them primarily through well-log interpretation. The properties they study include rock type, thickness of the layer of each rock type, rock density, rock porosity, rock permeability, fluid types, and saturations and pressures of oil, gas, and water in the rock.Geochemist – Evaluates fluid property variations in the reservoir. Determines what type of hydrocarbons are present, if any, by analyzing formation fluids as well as cuttings, drilling mud, and cores.
Rock mechanical property testing for petroleum geomechanical engineering applications
Published in Xia-Ting Feng, Rock Mechanics and Engineering, 2017
The petrophysical well logs are compared to the properties from the seismic surveys, whose depth resolution is generally in the range of 10-20m, to ensure compatibility at different well locations over the structure of the oil field. The geophysical responses and attributes obtained from surface seismic analysis enable average mechanical properties along the wellbore to be extrapolated away from the wellbores into the entire oil field reservoir and in some case into the overburden above the reservoir.
The zoning and characterisation of heterogeneous carbonate reservoirs based on the concept of flow units
Published in Applied Earth Science, 2020
Esfandyar Teymori, Mohammad Abdideh, Mohammad Amin Gholamzadeh
In the oil and gas industry, petrophysics includes the characterisation of rock and reservoir fluid properties. Petrophysical interpretation is the basis of much of the work done by geologists, reservoir engineers, and loggers. To characterise the reservoir, it is necessary to obtain physical samples and then measure their electrical, chemical, nuclear, and magnetic properties through surface logging, coring, drilling, and in-well logging tools.