An example of alternative correlation techniques in a low-accommodation setting, nonmarine hydrocarbon system: The (Lower Cretaceous) Mannville Basal Quartz succession of southern Alberta

Abstract

is currently country manager for Chemostrat Inc. based in Houston, Texas. Prior to joining Chemostrat in 2000, Milly gained a B.Sc. degree (geology) from the University of Leicester, United Kingdom (2000). Milly is also currently studying for a Ph.D. in Houston.

Chemostratigraphy, tectonic setting and provenance of the Cambro-Ordovician clastic deposits of the subsurface Algerian Sahara

“…Chemostratigraphy, or chemical stratigraphy, involves the characterization and correlation of strata using major and trace element geochemistry (Ratcliffe et al, 2004). Our study involved in seven wells from four oil and gas fields.…”

“…1. Previous studies on sandstones (Al-Gailani, 1980;Bhatia, 1983;Bhatia and Crook, 1986;Ehrenberg and Siring, 1992;Roser et al, 1996;Ratcliffe et al, 2004) but very few concentrated on its use in hydrocarbon exploration and production (Ratcliffe et al, 2002;Pearce et al, 2005). The common subdivision of the Cambro-Ordovician in Algeria into R3, R2, Ra and Ri units is difficult to use for a productive field.…”

“…Chemostratigraphy provides a complementary tool along side sedimentology and petrography. According to Wright et al (2006), hydrocarbons reservoirs within low accommodation fluvial depositional environments are notoriously difficult to understand in a rigorous stratigraphic framework (Ratcliffe et al, 2004. However, in order to exploit these reservoirs it is essential to have high resolution stratigraphic correlations and these are expected to allow a better understanding of the reservoir distribution and architecture.…”

Tracing provenance and pathways of late Holocene fluvio-deltaic sediments by heavy-metal spatial distribution (Po Plain–Northern Apennines system, Italy)

“…For this reason, source discrimination is commonly based on a combination of geochemical parameters plus calibration with heavy mineral analysis (see Ratcliffe et al 2004). The example shown here is different in that Ni and Cr act as powerful source discriminants for the Apenninic -Po Plain-Adriatic system, resulting in an accurate reconstruction of the sediment dispersal patterns from the river catchments to the coastal area.…”

Chemostratigraphy of upper Jurassic reservoir sandstones, Danish Central Graben, North Sea

“…Chemostratigraphy is increasingly utilised as a substitute for biostratigraphy in barren sequences or as a supplementary technique to improve stratigraphic resolution (Ehrenberg and Siring, 1992;Pearce et al, 1999;Preston et al, 1998;Ratcliffe et al, 2004). The main purpose of chemostratigraphy is typically to facilitate correlation between members and formations, in addition to subdivision of units.…”