Oilfield Review Summer 2011: 23, no. 2. Copyright © 2011 Schlumberger. For help in preparation of this article, thanks to Nicholas Drenzek, Cambridge, Massachusetts, USA. FLAIR is a mark of Schlumberger. Rock-Eval is a mark of the Institut Français du Pétrole. Rock-Eval 6 is a mark of Vinci Technologies SA. Every oil or gas play originates from source rock. The viability of each play—convention...

Ocean acidification threatens organisms that produce calcium carbonate shells by potentially generating an under-saturated carbonate environment. Resultant reduced calcification and growth, and subsequent dissolution of exoskeletons, would raise concerns over the ability of the shell to provide protection for the marine organism under ocean acidification and increased temperatures. We examined ...

Abstract Calcite cements are volumetrically dominant among the most diagenetic constituents in turbidite sandstones of Paleogene Shahejie Formation Dongying Depression. The results show carbonate mainly occur three phases: I (pre‐compaction), II (post‐compaction) and ankerite sandstone. isotopic composition range from –4.3‰ to 4.4‰, –3.5‰ 4.3‰ PDB, respectively, suggesting that calcite derived ...

The requirements for the accurate characterization of shoal sediments have increased in view fact that strata are eroded due to uplift and it is difficult calculate real thickness granular shoal. To solve this problem, with shoal-to-strata ratio, type distribution range carbonate rock facies described, sedimentary subsequently presented. Taking P2m2a Eastern Sichuan as an example, following con...

This paper presents the evaluations of reservoir characterization Lower Miocene Euphrates, and Jeribe carbonate formations that have been selected for this study in Kor Mor Gasfield Northeastern Iraq. The Euphrates ranged thickness between 30 65, 50m field, they are overlain by a thick evaporate cap rock Fatha Formation. two separated thin unit Dhiban Formation
 full set log data well Km-9...

buckle folds are common traps for hydrocarbon in several contractional provinces. buckle folds form where stratified sequences rest a top salt or some other utterly weak rock as a decollemet zone in units with high competency contrasts by a compressive stress which acted along the length of the rock layers. an important parameter affecting buckle folding of a competent zone above a mobile decol...

An important problem of marble-quarry management is assessing the quality and the homogeneity of quarry blocks before excavation. In this study, we decided to image the limestone, which we studied in a marble quarry, in terms of layer thickness, discontinuities and cavities using the ground-penetrating-radar (GPR) method. The method was successfully applied to detect and map the fractures with ...

Strength reduction method and ADINA software are adopted to study the stability of submarine tunnel structures subjected to seepage and earthquake under different seawater depths and overlying rock strata thicknesses. First, the excess pore water pressure in the rock mass is eliminated through consolidation calculation. Second, dynamic time-history analysis is performed by inputting the seismic...