The levels of 16 polycyclic aromatic hydrocarbons (PAHs) were investigated in 27 upper layer (0-25 cm) soil samples collected from the Dagang Oilfield (China) in April 2013 to estimate their distribution, possible sources, and potential risks posed. The total concentrations of PAHs (∑PAHs) varied between 103.6 µg·kg(-1) and 5872 µg·kg(-1), with a mean concentration of 919.8 µg·kg(-1); increased...

Improving the produced fluid yield is an effective measure for realizing crude oil production capacity of offshore platforms. However, platforms employed in production, using narrow space platform to expand water treatment system a significant problem. In this study, highly efficient pre-treatment core tube was coupled with main cavity and secondary cavities (MCSCs) based on vane-type tubular s...

Magnetic nanoparticles (MNPs) with surface coatings designed for water treatment, in particular targeted removal of contaminants from produced oil fields, have drawn considerable attention due to their environmental merit. The goal this study was develop an efficient method removing very stable, micron-scale droplets dispersed oilfield water. We synthesized MNPs the laboratory a prescribed coat...

In petroleum production, Produced Water Re-Injection (PWRI) has earned much interest among disposal methods of the produced water. However, presence of the contaminants in the produced waters usually results in formation damage in well bores and their surrounding fracture systems. In the present study, modeling of external cake formation on a fracture in unsteady-state conditions i...

Two irregular coccoid methanogens designated SEBR 4845T and FR1T were isolated from an oilfield in Alsace, France. Strain SEBR 4845T (T = type strain) is a hydrogenotrophic halotolerant methanogen, which grows optimally at 5% NaCI (w/v) and tolerates up to 12% NaCI. It does not use methylated compounds and therefore cannot be ascribed to any of the known genera of the halophilic methylotrophic ...

This study aims to overcome the principal problems in the current information-support–platformoriented digital oilfield. These problems include a low utilization efficiency of the software and hardware resources, the high maintenance cost of the system, and limited automatic control. Starting with the existing software and hardware resources and with the current pattern of use of cloud computin...

After long-term water flooding development in old oilfields, oil layers are generally flooded. Accurate and rapid recognize the layer is key to later infill well layout plan adjustment. In this paper, taking Xingbei area of Daqing Oilfield as an example, on basis clarifying characteristics water-flooded curve, through logging curve optimization, data preprocessing algorithm model optimization p...

The usages of the composite materials range from simple household to light-to-heavy industrial purposes including oilfield applications. The objective of this study is to evaluate current and potential uses of composite materials for the petroleum industry. This article gathered all the available composite materials that are normally used specially in oilfield and surface pipeline applications....