a bacterial strain (designated as alcaligenes sp. ms-103) isolated from oil sample of the aghajari oilfield in the south of iran, was able to produce an effective extracellular lipopolysaccharide biosurfactant (1.2±0.05 g/l) on molasses as a sole carbon source. the highest surface tension reduction to level 20 mn/m was achieved by biosurfactant produced by cells grown on molasses under optimum ...

Introduction. The formation of salt deposits and oilfield equipment’s corrosion in most oil fields has become particularly relevant due to the increase volume produced its water content recent years. deposition salts wells leads a decrease permeability reservoir, flow rate wells. aim work is use machine learning algorithms simulate effects an electromagnetic field on processes corrosion. Predic...

XX oilfield has a total of 10,561 oil and water wells, 6,790 wells were drilled in the oil-water layer, but only 10.3% so development degree same layer is relatively low. In stage cut stable production, geological reserves are considerable. Based on large number data statistics this paper understands developed situation characteristics plane vertical distribution, discusses feasibility to add p...

The selection of appropriate wells for hydraulic fracturing is one of the most important decisions faced by oilfield engineers. It has significant implications for the future development of an oilfield in terms of its productivity and economics. In this study, we developed a fuzzy model for well selection that combines the major objective criteria with the subjective judgments of decision maker...

X oilfield is located in the Western Bohai Sea. During water injection development process, oil well productivity continued to decline. The effect of and increase poor. This time, by analyzing sensitivity reservoir, damage mode reservoir analyzed, reasons for poor are obtained, because strong sensitivity, medium stress corresponding measures suggestions put forward, such as greater than 4500 mg...

The paper presents a new optimization model and solution approach for the investment and operations planning of offshore oil and gas field infrastructure. As compared to previous models where fiscal rules and uncertainty in the field parameters are considered separately, the proposed model is the first one in the literature that includes both of these complexities in an efficient manner. In par...

22 Do natural resource windfalls increase the risk of armed conflict within a country? Yu-Hsiang Lei and Guy Michaels investigate the impact of giant oilfield discoveries on the likelihood of civil conflict.