Из
I.V. Istratov
Problem of “Synclinal” Oil
The author supports V.A. Karpov's proposal that geology, tectonics, and oil and gas occurrence of negative structures (synclines, troughs, depressions, lateral and deep seated parts) should be studied in both old and new promising onshore and offshore petroleum provinces
И.В. Истратов д-р геол.-мин. наук РГУ нефти и газа им. И.М. Губкина, кафедра теоретических основ поисков и разведки нефти и газа профессор
ivistratov@mail.ru"...ловушки антиклинального типа будут выявляться и в дальнейшем, в первую очередь, в труднодоступных и малоизученных на нефть и газ территориях Восточной Сибири, в акваториях Черного, Охотского и арктических морей."
Будут, но когда? И это будет в труднодоступных и малоизученных на нефть и газ территориях... есть же места и подоступнее...
“Synclinal” oil problem
Karpov V.A.Написать письмо автору1
1 “Subsoil use XXI Century” magazine
Hydrocarbon exploration everywhere and always (with rare exceptions) focuses primarily on positive structural forms. At the same time, structural stage of exploration is almost complete in many regions. Denial of the possibility of wide oil accumulations development in negative structures is based on the consequences of the buoyancy force influence. However, in the course of tectonic development, other types of energy arise, which markedly larger than the effects of gravity field. The major factor affecting HC trap genesis is the fault. The same faults are often control anticlines and synclines; so the paragenetic association of positive and negative structures divided by the fault is observed. And the negative structure was formed in the last phase of tectonic movements activation. By that moment, the main accumulations were already formed; and emergence of the negative structure caused transformation of the original accumulation with the formation of secondary HC pools near the fault, and they are situated at different depths. HC traps associated with tectonites are of particular interest. The key features of these accumulations are their simultaneous formations and fluid filling in the last phase of fault activation. Success of hydrocarbon exploration and prospecting is 20 to 40%. The main reason is in the fact that much of HC is associated with negative structures. The anticlinal paradigm should give way to the tectonic paradigm, which provides for a new direction of geological exploration: searching for HC accumulations within negative structures that can control sufficiently large fields. The success of HC exploration can no longer be increased by improving the methodology, introducing various innovations, if one continue to drill positive structures not moving towards direct mapping of HC accumulations regardless of their structural behaviour, and using various "direct" technologies.
