Petrophysical features of the rocks of the Pliocene deposits of the oil and gas-bearing region of the Nizhnekurinskaya depression

Abstract

Summary Recently, based on the oil and gas perspective of deep layers, many geological and geophysical assessments have been carried out in Azerbaijan. Scientific criteria have been prepared, which may be the basis for future research. It was noted that the main oil and gas fields are associated with the South Caspian and the Kursk Basin, which underwent intensive deepening during the Mesozoic era. Despite the high prospects in the central part and the deep layers, while it does not arouse suspicion among researchers, the quantitative and numerical expression has not yet been properly reflected. The article presents the results of analytical generalization of laboratory research data for a complex of petrophysical parameters of reservoir rocks - potential hydrocarbon reservoirs. The object of research was the well-known horizons of the Productive Strata (PT) of the Meso-Cenozoic sedimentary basin. The study area includes actively and long-term developed oil and gas onshore, as well as offshore deep-water fields of Azerbaijan. In the article complex results of the petrophysical testing sample of rocks from taken digging prospecting-development wells from areas of the Lower Kura Trouth which widen productive unit sediments was showed. Defined the collectors' characteristics of rocks. Shows the results of generalization, the analysis and the interpretation of collectors researches more than a thousand samples of sedimentary and magmatic rocks from taken deep exploration wells in the Lower Kura Trouth under high atmospheric pressures and temperatures. For restoration, the physical properties as a result of elastic deformations have been investigated the lithological difference of rock samples from the area of Lower Kura Trouth. Researches have shown that the physical properties of single-nominal and single-old rocks are changed and have different values as the result of geological-physical processes.