IDEA #3AUZDR HIGH PRESSURE AND TEMPERATURE FACILITY WITH INTERPORE PRESSURE MODELLING

HIGH PRESSURE AND TEMPERATURE FACILITY WITH INTERPORE PRESSURE MODELLING the rock skeleton to deformation under Description is Under natural conditions subjected simultaneous influence of rock, formation (pore pressure) pressures and temperature. As a result of reaction and influence efficiency with depth of each indicted thermobaric factors and lithological rock composition one can observe consolidation and decompression. Under conditions of uniform compression during rock deformation, rock’s consolidation limit is resulted by rock skeleton’s micro-deformation. At the same time rock decompression is excluded due to lack of counteracting forces. The most difficult and at the same time useful from the practical point of view is the process related to rocks deconsolidation followed by development of secondary processes i.e. pore space volume temperature experimental facilities with interpore pressures and testing techniques were elaborated and designed in order to study these complicated and important processes. increase. High-pressure and Innovative Aspects and Main Advantages Experimental facility enables to determine rocks, collectors and clays properties providing creation of separate and simultaneous geostatic pressure (500 MPа), pore pressure – to 200 МPа and temperature 200 – 300 С at depth 15 – 20 km. This facility allows to create: • External pressure -500 МPа; • Interpore pressure - 200 МPа; • Temperature- 250 – 300 С˚; • Separate and simultaneous pressure and temperature impact; • Simultaneous measuring of several physical parameters in case of rocks saturation with different fluids; • Pore liquid substitution with other fluids under different thermodynamic conditions. Areas of application The results of elaborations can be used when estimating filtration-capacitive and collector rock properties. This equipment can be used in: • Reserves estimation; • Oil-gas fields exploration; • Well drilling; • Estimation of quantitative rocks deconsolidation. Pic. 1. High pressure and temperature facility with interpore pressure modelling. Stage of development Prototype is available. The conducted tests showed good results. For the first time there was determined a linear law of porosity change and permeability of rock-collectors of different lithological composition during a fall of initial formation pressure and fixed rock pressure corresponding to the depth of bed occurrence on the fields of the South Caspian Depression. Depths and values of effective pressures leading to rocks decompaction and development of secondary processes were determined. Patterns of change of physical-mechanic properties of porosity, permeability, rock strength properties conditions corresponding to depths within 10 -15 km. under different thermobaric Contact details Institute of Geology NASA Contact persons: author Dr. İmanov A.A., Experts Dr. Poletayev A.V. & Poletayeva Y.V. Address: 29 A, H. Javid Avenue AZ1143, Azerbaijan, Baku Tel: (+994.12) 5100141 Fax: (+994.12) 4975285 E-mail:avo1@mail.ru; alexsander@gia.ab.az; yelenapv@mail.ru; yelena@gia.ab.az