granted that literacy is a social practice involving different values, attitudes, feelings, and social relationships, this study attempts to examine literacy practices and the potential changes made through a history of forty years. the study was conducted in the village of cheshmeh, near mashhad, iran, where the social definition of literacy emerged. the data have been collected through partic...

The classification of well-log responses into separate flow units for generating local permeability models is often used to predict the spatial distribution of permeability in heterogeneous reservoirs. The present research can be divided into two parts; first, the nuclear magnetic resonance (NMR) log parameters are employed for developing a relationship between relaxation time and reservoir poro...

The selection of well pattern system is not only the key content in process oilfield development, but also core problem design development. It basis for effective utilization tight reservoir technology. Through scientific analysis geological structure and dynamic characteristics Yang H oilfield, can be reasonably optimized development Chinese vigorous. Starting from oil gas field this paper ana...

After more than ten years of water injection development, the cut in main block oilfield B has increased rapidly and production decreased significantly. In view rapid rise comprehensive current oilfield, it is necessary to carry out research on development law reasonable boundary various adjustment indexes, so as clarify different stages The status index change under oil rates provide an accura...

The phenomenon of the cementing annulus micro clearance gas channeling directly influences cement job quality and oilfield production, so accurately describing the flow rule of cementing annulus micro clearance gas channeling is the core and "bottleneck" problem of controlling gas channeling effectively. From the perspective of the micro particle motion and based on the lattice Boltzmann method...

It is the important technology to take the optimum control of automatic drilling in the course of oilfield drilling in accordance with actual situation. Due to the complexity of drilling process and the non-linear relationship between input and output of drilling system; it’s difficult to acquire satisfied results to adopt general control method. This article presents a new control method which...

A modelling effort was made to try to predict the life of downhole tubes or casings, synthetically considering the effect of service influencing factors on corrosion rate. Based on the discussed corrosion mechanism and corrosion processes of downhole tubes, a mathematic model was established. For downhole tubes, the influencing factors are environmental parameters and stress, which vary with se...

Consider an undeveloped oilfield with uncertainty about the size and quality of its reserves. There are some alternatives to invest in information to reduce the risk and to reveal some characteristics of the reserve. This paper presents an evolutionary real options model of optimization under uncertainty with genetic algorithms and Monte Carlo simulation, to select the best alternative of inves...

Faculty of Organizational Sciences, University of Belgrade, Belgrade, Serbia; School of Computing and Information Systems, Athabasca University, Athabasca, Canada; The Center for Interactive Smart Oilfield Technologies, University of Southern California, Los Angeles, California, USA; Department of Computer Science, University of Saskatchewan, Saskatoon, Canada; School of Interactive Arts and Te...

Pseudomonas aeruginosa DQ8, which was isolated from the crude oil polluted soil in the Daqing oilfield of China, can efficiently degrade diesel, crude oil, n-alkanes, and polycyclic aromatic hydrocarbons (PAHs). Here, we present a 6.8-Mb assembly of its genome sequence. We have annotated 23 coding sequences (CDSs) responsible for catabolism of n-alkanes and PAHs.