METHODOLOGY AND FEATURES OF RESEARCH OF FILTRATION PROPERTIES OF COMPACTED DEEP-SEATED ROCKS

Abstract

As a result of the depletion of conventional hydrocarbon reserves, there is a need to explore deposits at great depths and under difficult geological conditions. This requires the improvement of technologies for studying rocks and fluids using computer modeling systems and laboratory equipment. Laboratory modeling of the processes occurring in rocks during drilling, development, stimulation or various chemical treatments plays a significant role in modern hydrocarbon production, as it reduces the number of errors at the design stage of field development or methods of impacting productive formations. There are a number of well-known manufacturers of laboratory equipment that model filtration processes in rocks, but any system has both advantages and disadvantages. To implement the tasks of studying filtration processes in rocks, technologies for the development of compacted and conventional reservoirs, stimulation methods and physical and chemical effects in hydrocarbon production, filtration equipment has been developed that allows for standard and special studies of rock core material. The first low-pressure unit allows for fast and accurate measurements of porosity and permeability at pressures up to 10 MPa and temperatures up to 120℃. In addition to filtration processes, the equipment allows for evaluation studies of the impact of various chemical solutions, drilling and other process fluids on natural and artificial cores in scientific and industrial research. For the study of rocks and fluids in reservoir conditions, a filtration system has been developed that allows for all of the above studies at pressures up to 100 MPa and temperatures up to 200℃. The peculiarity of the developed equipment is high accuracy of measurements, automation of monitoring processes, corrosion-resistant design of the main components and assemblies, which allows conducting research in any aggressive environment. Laboratory studies allow avoiding mistakes in the design of new areas development, reducing drilling accidents and selecting effective technologies for rock impact.