In the petroleum industry, measurements of the density and viscosity of petroleum reservoir fluids are required to determine the value of the produced fluid and the production strategy. Measurements of the density and viscosity of petroleum fluids require a transducer that can operate at reservoir conditions, and results with an uncertainty of about ±1% in density and ±10% in viscosity are need...

In 1859, Edwin Drake drilled one of the world’s first commercial oil wells south of Titusville, PA, which produced 25 barrels of petroleum (then called rock oil) on its first day from a geological reservoir located 69 ft below the surface. At the time, people were beginning to recognize the value of petroleum, mostly for its ability to lubricate and illuminate. So, in a sense Drake’s gusher hel...

This paper was conducted to delimit the water influx in Hamzeh oil reservoir, located northeastern Jordan approximately 150 km east of Amman. Petroleum reservoirs are frequently encompassed by aquifers that back up reservoir pressure through inflow. When declines a petroleum aquifer responds providing an water. Gradually, damage is reduced and then eliminated, more produced from reservoir. The ...

Here, we report the draft genome sequence of Geobacillus thermoleovorans strain B23, which was isolated from a deep subterranean petroleum reservoir in Japan. An array of genes related to unique long-chain alkane degradation pathways in G. thermoleovorans B23 has been identified by whole-genome analyses of this strain.

The understanding of the phylogenetic diversity, metabolic capabilities, ecological roles, and community dynamics taking place in oil reservoir microbial communities is far from complete. The interest in studying microbial diversity and metabolism in petroleum reservoirs lies mainly but not only on providing a better comprehension of biodegradation of crude oils, since it represents a worldwide...

Marine controlled source electromagnetic (MCSEM) surveys have become an important part of offshore petroleum exploration. In this paper we present a new approach to 3-D inversion of MCSEM data. It is based on rigorous integral equation (IE) forward modeling and a new IE representation of the sensitivity (Frechet derivative matrix) of observed data to variations in sea-bottom conductivity. This ...

Fluorosurfactants are effective in a variety of Enhanced Oil Recovery (EOR) techniques including (i) improving subterranean wetting, (ii) increasing foam stability, and (iii) modifying the surface properties of the reservoir formation. While fluorosurfactants have been used in gas and oil exploration for four decades, the increased demand for petroleum and the greater understanding of the benef...

In petroleum industry, during production, the vertical effective stress in the reservoir increases as the pore pressure decreases from few hundreds to few tens bar; in average the horizontal effective stress increases as well, but at a lower rate along an oedometric path, favoring shear stress and reservoir depletion; a complex geology induces locally a variety of stress paths between the two e...

The Ekofisk field, Norwegian North sea, is an example of a compacting chalk reservoir with considerable subsequent seafloor subsidence due to petroleum production. Previously, a number of models were created to predict the compaction using different phenomenological approaches. Here we present a different approach which includes a new creep model based on microscopic mechanisms with no fitting ...