a r t i c l e i n f o The Upper Cretaceous John Henry Member of the Straight Cliffs Formation preserves regressive shoreface and channel facies, and transgressive lagoonal tidal inlet facies that suggest distinct modal sandstone compositions. Detrital modes from six sandstone facies (upper shoreface, lower shoreface, deflected mouth bars, fluvial channels, tidal inlets and washover fans), and t...

In order to clarify the sedimentary development law under Cambrian Ordovician regional stratigraphic framework in Tadong area, and lay a theoretical foundation for further oil gas exploration study area. The distribution, characteristics evolution of main facies belts are studied by means drilling core observation, cast thin section identification, logging curve feature analysis, seismic profil...

Formed on top of the Gulf Cadiz, Al Idrissi mud volcano is shallowest and largest in El Arraiche field northwestern Moroccan margin. The development morphology volcanoes from group have been studied at a large scale. However, time interval related to their formation period still needs be better understood. In this regard, we interpreted analyzed seismic facies 2D reflection data GEOMARGEN-1 cam...

We present detailed bathymetry, remotely operated vehicle (ROV) and submersible observations, and sedimentary and radiocarbon age data from carbonate deposits recovered from two submerged terraces at 150 m (T1) and 230 m (T2) off Lanai, Hawaii. The tops of the terraces are veneered by relatively thin (b5 m) in situ accumulations of coralline algal nodule, coralgal nodule, Halimeda and a derived...

The problem of estimating the location of facies boundaries is difficult in history matching, partly because of the geological complexity. The truncated plurigaussian method for modeling geologic facies is useful in this aspect not only for the wide variety of textures and shapes that can be generated, but also because of the internal consistency of the stochastic model. This method has not bee...

Coal exploration and mining in extensively drilled and sampled coal seams can benefit from 3D statistical facies interpolation. Starting from closely spaced core descriptions, and using interpolation methods, a 3D optimum and robust facies distribution model was obtained for a thick, heterogeneous coal seam zone deposited in the non-marine As Pontes basin (Oligocene-Early Miocene, NW Spain). Se...

When CO2 is injected in saline aquifers, dissolution causes a local increase in brine density that can cause Rayleigh-Taylor-type gravitational instabilities. Depending on the Rayleigh number, density-driven flow may mix dissolved CO2 throughout the aquifer at fast advective time-scales through convective mixing. Heterogeneity can impact density-driven flow to different degrees. Zones with low ...

Future gas field development and prospect assessment depend on accurate reservoir parameter characterization. The understanding of the tight sand distribution Shanxi Taiyuan Formations within Hangjinqi area is ambiguous due to presence coal mudstone lithofacies, high heterogeneity, poor resolution seismic data. Thus, it difficult determine reservoir’s thickness. To cope with this challenge, we ...

Abstract The study attempts to address the knowledge gap in Bredasdorp Basin Offshore South Africa by using newly acquired seismic data with an enhanced resolution, integrating core and well log provide a solution. main objective of this was volumetric sandstone reservoir characterization 13At1 10At1 sandstones deposited upper shallow marine environment. results reveal four facies grouped as 1(...

the area under study is located 75 km north of isfahan north of fenshark village.the mesozoic deposits of this area have been metamorphosed in the vicinity of neogene granodiorites and quartzdiorites ,forming hornfelses in three individual facies albit-epidot-hornfelses in three individual facies albit-epidot-hornblende-and pyroxene hornfels. wollastonite,vesuvianite,garnet and calcite are the ...