Entity

Time filter

Source Type

Romania

Dumitrescu E.,OMV Petrom SA | Andronescu E.,Polytechnic University of Bucharest
Revista Romana de Materiale/ Romanian Journal of Materials | Year: 2016

This paper presents experimental results for liquid waste inertization in chemicaly bonded phosphate ceramic (CBPC). This process turns waste hazardous in non-hazardous waste. It was studied the inertization of liquid wastes containing heavy metals (Ba, Cd, Cu, Ni, Pb) with concentrations between 3000 mg/l and 30000 mg/l in CBPC versus inertization in portland cement paste. As the CBPC is a fast setting system, it was also used boric acid as retarder in concentration of 3% (based on the amount of magnesium oxide and potassium dihydrogen phosphate). To increase the efficiency of cadmium inertization, phosphoric acid was added. Also it was studied the influence of sodium dimetilditiocarbamate. It was determined the maximum temperature of the obtained systems, the setting time and compression strength. To determine the effectiveness of waste inertization it was performed leaching tests in water and in acid solution, and the obtained values were compared with regulated limits. © 2016, Procema SA. All Rights Reserved. Source


Bega Z.,OMV Petrom SA
Journal of Petroleum Geology | Year: 2015

Geological and geophysical data generated during the mid-1990s and early 2000s indicate that the Montenegro - NW Albania area may have hydrocarbon potential. Thrust-related structures and sub-thrust autochthonous Mesozoic platform carbonates in the Dinaride-Albanide fold-and-thrust belt are potential exploration targets. Potential play types include structurally inverted autochthonous platform carbonates both on- and offshore Montenegro, and platform build-up closures located offshore. Potential source rocks are of Cretaceous age, analogous to those at oil discoveries in the Southern Apennines, and have been modelled to generate economic volumes of light oils which may be trapped in fractured shallow-water carbonates and sealed by deep-water Oligocene shales. The Neogene succession in Montenegro is dominated by turbidite sandstones which have the potential to contain biogenic gas. Structural and stratigraphic traps have been identified in 2D and 3D seismic reflection profiles but no wells have tested this play to date. However the biogenic gas play is considered to be of less importance than the potential oil play involving Mesozoic carbonates. © 2015 Scientific Press Ltd 38 3 July 2015 10.1111/jpg.12613 Original Articles Original Articles © 2015 The Authors. Journal of Petroleum Geology © 2015 Scientific Press Ltd. Source


Adam J.,Dalhousie University | Adam J.,Royal Holloway, University of London | Krezsek C.,Dalhousie University | Krezsek C.,OMV Petrom SA
Geological Society Special Publication | Year: 2012

This study integrates seismic interpretation and 3D analogue experiments monitored by digital image correlation techniques to investigate the evolution of the salt structures and the related depositional systems in the Laurentian Basin offshore Atlantic Canada. During the late Triassic, a layer of more than 3 km thick salt was deposited locally in a set of interconnected rift half-grabens forming a 50-70 km wide evaporite basin in the northern part of the Scotian Basin salt provinces. High sediment input in the Jurassic and early Cretaceous mobilized the salt into complex salt tectonic features, which suggest four kinematic domains with: (1) salt welds and pillows; (2) extensional diapirs and canopies; (3) contractional diapirs and folds; and (4) allochthonous salt nappe. The landward grabens trapped most of the Early Jurassic sediments by passive downbuilding into the salt with local extension. The expelled salt has been evacuated basinwards into a large contractional salt massif. The rapid advance of the allochthonous nappe was coeval with the Late Jurassic extensional collapse of the inflated salt massif due to seaward sediment progradation. Late Cretaceous and Tertiary progradation over the salt nappe caused extensional deformation with growth faulting and formation of minibasins on the secondary salt detachment level. © The Geological Society of London 2012. Source


Bojar A.-V.,University of Salzburg | Bojar A.-V.,Universalmuseum Joanneum | Barbu V.,OMV Petrom SA | Bojar H.-P.,Universalmuseum Joanneum
Geological Quarterly | Year: 2012

Detailed litho strati graphic data from a borehole in the Abràmut Basin, located in the northwestern part of Romania, has revealed the presence of turbiditic deposits containing several layers with tuff/tuffaceous materials in the lower Badenian. The age of these deposits is determined by the presence of the foraminifera Praeorbulina glomerosa and Orbulina suturalis. Detailed quantitative and qualitative X-ray diffraction data (XRD) on 10 different tuff layers situated at depths between 2450 and 2640 m show a mineralogical association comprising analcime, quartz, volcanic glass, smectite, mica, calcite, K-feldspar, glass and minor quantity of chlorite and albite. The presence of analcime suggests that the albite isograd for the interval studied has been never reached and the maximum temperatures have been lower than c. 125°C since the early Badenian. Source


Salcu M.,OMV Petrom SA
NACE - International Corrosion Conference Series | Year: 2013

This paper promotes a proprietary approach meant to increase the operation lifetime of the J55 tubing. The project driver was the premature and repeated failures of the J55 tubing, under different environments and various operating conditions. Detailed failure analyses have been carried out revealing the following damage mechanisms: wear, corrosion or both, assisted at times by erosion. The tubing failures, macro and micro investigated in the laboratory, together with the material tests, revealed that the technological and mechanical properties of steels are directly correlated to their microstructure. After studying several variations of steel microstructure, in relation with the features of the damaged tubing, the root cause of the failures was established and a corrective measure was taken, respectively the type of steel was modified from low carbon steel to medium carbon steel. The newly designed carbon steel was assessed as able to result in tubing failure rate decreasing. The laboratory research findings were validated by field trials where, by using the J55 tubing manufactured according to the new steel design (chemical composition and heat treatment), the lifetime improved significantly. The average Mean Time Between Failures (MTBF) corresponding to the field trials has increased by a factor of 4.5 for the most aggressive conditions. There are tubing strings still operating after 969 days. © 2013 by NACE International. Source

Discover hidden collaborations