Environment for the Formation of Shale Oil and Gas Accumulations in Low-Permeability Sequences of the Maikop Series, Fore-Caucasus.

Abstract

The studies were carried out with the financial support of the Ministry of Education and Science of Russia within the framework of the Task No. 10.6569.2017 / BP for the implementation of research work (the basic part of the state task in the area of scientific activity) AbSTRACTThe article is devoted to a study of the generative potential of the Maikop series in the Fore-Caucasus. The series is among the promising for the discovery of «shale» hydrocarbons in the Russian territory. For its evaluation have been conducted laboratory studies including chemicobituminological, pyrolitic and coal petrography analyses of the organic matter. The article analyzes the issues of zoning the Khadum and Batalpashin Formations in the Central and Eastern Fore-Caucasus by geochemical criteria. Conclusions are made that a significant part of the Khadum and Batalpashin sediments in the study region is both at the approach to and within the «oil window». For the first time for this region was conducted a quantitative evaluation of the generative hydrocarbon potential of the Khadum and Batalpashin sediments.

Self-development and Renewal of Hydrocarbon Resources and Reserves in the Caspian and Black Sea Region

“…As it is shown by the results of the geochemical research and modeling of the hydrocarbon systems (Figure 3) within the boundaries of the Tersky-Caspian trough, the Middle and Upper Jurassic OGPR have currently developed their potential completely. Generation of the hydrocarbons by them is possible solely within the boundaries of the Garadag structural zone, where they are at the gradation of the catagenesis of MC4 with preserving 20% of their generation potential [12]. The extent of development of the kerogen in the Apt-Alb OGPR is decreased from 90% in the depocenter of the Chechen trough to 40…70% at its boundaries.…”

Formation Conditions of Hydrocarbon Systems on the Sakhalin Shelf of the Sea of Okhotsk Based on the Geochemical Studies and Modeling

“…As suggested by the results of geochemical studies [18][19][20][21][22][23] , the Nutovsky horizon is catagenically immature. In the depots of the Deryugin and Chayvinskaya depressions, the Piltura and Veninka synclinal zones, the Okobykai horizon entered the hydrocarbon generation zone.…”

Formation conditions of hydrocarbon systems in the Turkmen sector of the South Caspian basin

“…Современная температура поверхности была принята как постоянная величина 5 °С. Применялась модель переходного теплового потока, которая использовала полное дифференциальное уравнение и учитывает теплоемкость различных литологических единиц [15]. В процессе моделирования использовалась величина постоянного теплового потока 40 мВт/м 2 [16], что обычно соответствует современному температурному градиенту, который составляет приблизительно 16-19 °С/км, что, в свою очередь, соответствует замерам [22].…”

“…Зоны и участки их проявлений характеризуются приуроченностью к различным стратиграфическим комплексам, варьирующей по разрезу и площади интенсивностью, разнящимися механизмами генерации, условиями консервации и релаксации, степенью гидравлической связи с региональной гидродинамической системой и локальными водонапорными комплексами[2]. В мезозойских отложениях в Туркменском секторе Южно-Каспийского бассейна аномально высокие давления констатированы в ряде структур восточного замыкания Прибалханской зоны, на суше Горганского прогиба[14].…”