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Genesis Determination of Shale Formation Natural Reservoir: Bazhenov Horizon Case Study
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, EAGE/SPE Workshop on Shale Science 2017, Apr 2017, Volume 2017, p.1 - 5
Abstract
Mosaic netprotocol of the Bazhenov formation is determined not only by the uneven heating of vysokovitaminnym strata, but variability of the tectonic situation: the situation of the productive strata concerning the various faults and their fracture Operahuset. As a result, on-site Polanowska LOU appeared heterogeneous oil saturation (promising development) zone. The results of the research allow to make the next step in the solution methodology mapping of prospects with the development of the natural manifold, namely to conduct a mineralogical mapping vysokovitaminnym deposits in the area where they are first deposited directly on the early Mesozoic rhyolites (granites Paleozoiskiy young - intrusions) and in places where the lower Jurassic tyre. And second, isolated overlying and underlying sedimentary strata.
Reviewed material shows that multi-scale dolomitization, along with calcitization developed as in rich in organic matter (OM) in rocks and primary sedimentary limestones and calcareous rocks of the Bazhenov-Abalak complex. The flow rates of the wells penetrated these strata, in some cases, may vary greatly as the nature of the relationship between the imposed by dolomitization and sedimentary calcasola complex.
Vysokovitaminnym formation in the Bazhenov formation deposits syngenetic free (scattered) of oil and natural secondary manifold presented bituminoznye organogenic-clay rocks, containing disseminated dolomite in situ are paragenetic processes. The border appearance of scattered secondary dolomite in situ in the bituminous sediments should be considered the contour of the productivity of the Bazhenov formation with the presence of free oil