Research Paper
Petroleum Engineering
Meisam Hemmati; Yaser Ahmadi
Abstract
The Rock-Eval pyrolysis is a thermal method that is widely used by the petroleum geologist for evaluation of source rock characteristics and obtain geochemistry parameters. However, there are misconceptions and misuse in exceptional cases which could lead to erroneous conclusions in using Rock-Eval pyrolysis ...
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The Rock-Eval pyrolysis is a thermal method that is widely used by the petroleum geologist for evaluation of source rock characteristics and obtain geochemistry parameters. However, there are misconceptions and misuse in exceptional cases which could lead to erroneous conclusions in using Rock-Eval pyrolysis to evaluate properties of the organic matter, a cross-plot of S2 (petroleum potential) versus TOC (total organic carbon) is an usable tool which can facilitate better interpretations. The graph can apply as a criterion accuracy of geochemistry parameters, and provides the correction for S2, HI (hydrogen index), kerogen type, and measuring the adsorption of hydrocarbon by the mineral matrix. In addition, this article demonstrates a manner based on the graph to detect bitumen or hydrocarbon contaminations. Based on our knowledge about the Garau Formation as a possible source rock in petroleum geology of Iran, a geochemical study using Rock-Eval VI pyrolysis and Leco Carbon Analyzer has been conducted on samples from different outcrop sections in Lurestan province, Aligudarz region, from South-West of Iran, High Zagros. Plotting the data on a cross plot of S2 versus TOC, and determining the regression equation is the best method for determining the real values of S2 and HI parameters and measuring the contamination by bitumen or hydrocarbon. Hydrocarbon contaminations makes geochemistry data unreliable, as unrealistically increase S2 and HI, lower Tmax values, and reduce the thermal maturity level of organic matters or kerogen of source rock samples in two study locations. For skipping the effect of contamination and obtaining the real geochemistry parameters, the y-intercept of the graphs must be removed. The cause of contamination in organic rich facies of the Garau Formation is the adhesion of heavy bitumen to organic facies which is due to the covalent bonds between carbon and hydrogen ions.
Research Paper
Management
NAZANIN GHALEH KHANDANI
Abstract
The oil industry is looking for a way to develop reservoir management and optimal production of hydrocarbon reservoirs. The use of advanced technologies in the extraction of oil and gas reserves is very important in advancing the short-term and long-term goals of this industry, both in terms of product ...
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The oil industry is looking for a way to develop reservoir management and optimal production of hydrocarbon reservoirs. The use of advanced technologies in the extraction of oil and gas reserves is very important in advancing the short-term and long-term goals of this industry, both in terms of product type and process. A technology roadmap is a plan that implements short-term and long-term goals by using technology solutions to help achieve the goals; ; The technology roadmap for in Enhanced Oil Recovery (EOR)/ improved Oil Recovery (IOR) oil fields has been developed based on the emphasized fields and areas of the target technology and has been expressed in a ten-year period according to the existing challenges and preventive measures, and all research and executive activities will be carried out with the focus on the roadmap.In this research, using the case study research method, by studying 9 case of research conducted in the research and technology of the National Iranian Oil Company, a map of executive achievements and technological solutions in each of the target technology areas: reservoir, well and The facilities have been identified and presented based on the challenges and implementation stages. The results of this study showed that in this roadmap, the issue of creating, developing and equipping specialized centers for EOR, raising skills, expertise and knowledge and transferring technology as achievements Sustainability is key and in addition to other achievements, outputs and results of each stage and technological solutions to challenges has been highly emphasized and important
Research Paper
Technical Inspection Engineering
Gholamreza Rashed; maryam salehi; Mohammadreza Shishesaz; Iman Danaee
Abstract
The effect of using Conocarpus extract as a green inhibitor on the corrosion behavior of mild steel in a 1M HCL environment was investigated by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy ...
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The effect of using Conocarpus extract as a green inhibitor on the corrosion behavior of mild steel in a 1M HCL environment was investigated by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FTIR). The impedance test showed that the polarization resistance increased from 29 for the blank solution to 299 for the solution containing 2500 ppm of Conocarpus extract. The results of the polarization test showed that at room temperature, the corrosion current density for the blank solution decreased from 3.5E-4 to 2.6E-5for the solution containing 2500 ppm of Conocarpus extract, and the potential was shifted to negative values. The polarization test was performed at three temperatures of 25, 55, and 85. The results showed that the efficiency of 1925 ppm has decreased from 93% at room temperature to 86% at 85 ° C. Obviously, the high-temperature efficiency has not reduced significantly, which means the effectiveness of Conocarpus extract at high temperatures. FTIR test also proved that the corrosion inhibitory effect of Conocarpus extract is due to the presence of heteroatoms such as N, S, and O. The adsorption isotherm results showed that the adsorption of the extract as a single layer on the surface is consistent with the Langmuir isotherm.
Research Paper
Petroleum Engineering
Amin poorzangheneh; Bijan ghanavati; Borzu Asgari pirbalouti
Abstract
Oil well cementing is a multi-purpose operation, in which cement slurries are prepared by mixing water, cement and various additives and is pumped into the well in order to isolate productive zones, protect the casing pipe, perform remedial operations, controlling drilling fluid lost or abandon the well. ...
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Oil well cementing is a multi-purpose operation, in which cement slurries are prepared by mixing water, cement and various additives and is pumped into the well in order to isolate productive zones, protect the casing pipe, perform remedial operations, controlling drilling fluid lost or abandon the well. Various additives are used to improve the mechanical properties of the slurry. Weight-enhancing additives are materials with specific gravity higher than cement, which increase the weight of the slurry. Improving the mechanical properties of these type of cement slurries has always been an important issue in the discussion of oil wells cementing. In this study, the effects of nano zeolite on heavy-weight oil well cement slurry were investigated in laboratory to improve the rheological and mechanical properties of the cement. In the designed experiments, nano-zeolite was added to the slurry with the amount of 1, 2 and 3% BWOC. The results showed that nano zeolite acts as an additive to reduce the thickening time, increase the plastic viscosity and reduces the yield point of the slurry. The experiments also showed that in general, the addition of nano-zeolite to the cement slurry from 1 to 3% BWOC led to an increase in the free fluid of the cement slurry, but did not show any effect on the control of the fluid loss. Finally, by adding 2% BWOC of nano zeolite, the compressive strength of the cement stone increased and the initial setting time of cement slurry decreased.
