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This study adopts the CCR-BCC DEA method to estimate the agricultural efficiency of Ganzi Tibetan Autonomous Prefecture as an example of ethnic minority area. Results show that among 18 counties in Ganzi, china, except of one, the other counties present greater pure technical efficiency of agricultural values than that of allocative efficiency, that the production inefficiency in Ganzi is mainly subject...
In this paper the distribution of world's electricity sources is presented graphically. The contribution of renewable energy sources is focused here. The CO2 emission rate has been discussed from various aspects. A prediction model is presented for world electricity generation capacity, electricity consumption, CO2 emission rate and renewable energy harnessing. At last a brief energy prediction model...
Studies on dynamic real-time optimization (D-RTO) of waterflooding strategies in petroleum reservoirs have demonstrated that there exists a large potential to improve economic performance in oil recovery. Unfortunately, the used large-scale, nonlinear, physics-based reservoir models suffer from vast parametric uncertainty and generally poor short-term predictions. This seriously limits the industrial...
The relaxation search algorithm to identify the parameters of hydraulic fractured gas wells is developed in this paper based on the inductive matrix. According to the optimization theory and parallel computation method, the parameters to be identified are divided into 2 parts and a set of software for hydraulic fracturing simulation is designed, which is suitable to run on parallel computers. The...
Firstly, this paper analyzes the status of energy consumption in Henan Province, and then the improved GM (1, 1) model is used to predict the energy consumption and energy structure in the following several years; it shows that the energy structure is unreasonable in the coming years; coal is consumed too much and the ratio of natural gas, renewable energy and new energy should be increased. Finally,...
The continuous increase of soybean imports takes a big threat to the enterprises which use domestic soybean in production. Based on the theories, this paper analyzes the dimensions of the perceived value of soybean oil and investigates their effect on consumer behavioral intentions. The result shows the safe value, functional value and perceived cost have significant positive effect on repeat purchase;...
Pyrolysis oil (also called bio-oils) produced from biomass is a promising substitute for fossil fuels. However, bio-oil has many shortcomings, such as high viscosity, high oxygenate content, low stability and low heating value. Therefore, it is hard for direct high-grade fuel utilization before upgrading. In this paper, bio-oil upgrading techniques, such as catalytic hydrogenation, catalytic cracking,...
The crude oil demand is growing rapidly in China, driven by its rapid industrialization and motorization. China has already become the second-largest oil importer nation in the world, after the United States. The dynamic GM(1,1) model of grey theory is used to develop the dynamic GM(M,N) model to forecast the crude oil consumption and production in China. In order to improve the forecasting accuracy,...
Based on the geological parameters of LIAOHE oil field, a numerical model with interlayer was established by computer, the STARS block of CMG was employed to simulate steam assisted gravity drainage (SAGD) with vertical and horizontal wells, the influences of interlayer on SAGD, the expansion process of steam chamber (SC) and the production index was obtained and analyzed. The results indicate: whether...
In order to reduce production cost of Pseudomonas aeruginosa T1, which has the ability of producing the biosurfactant when using crude oil as the sole carbon source, Three experimental methodologies (Plackett-Burman design (PBD), steepest ascent design (SAD), Central composite rotatable design (CCRD)) were applied to optimize the medium ingredients of the strain. In the verification experiment, the...
Although great achievements have been made in the study of supply-chain performance measurement (SCPM), there are still lots of disputes and pronounced criticisms about current researches. In order to shed light on these problems, especially for these problems which fail to consider strategies or fail to give sufficient consideration of implementation costs of SCPM, we summarize researches on conceptual...
Using the theory and method of deterministic multi-layer programming and monolayer fuzzy programming, this paper presents a fuzzy bi-level optimal model based on non-deterministic environment and solves it by hybrid genetic algorithm. The model is used to solve programming of some domestic oilfield, and it can reflect the actual situation of oilfield better. The result shows that the fuzzy bi-level...
In order to quantify the demand elasticity of China's imported crude oil, a long-run stable relationship is estimated among the crude oil import, income and crude oil prices by the autoregressive distributed lag (ARDL) bound testing approach over the period 1999-2009. Empirical results show that the short and long-run price elasticities of imported crude oil are positive and inelastic, and the long-run...
This paper contains the overview of a new simulation system intended for the simulation of the wide class of industrial and transportation systems. The example of the use of this system for the simulation of oil production enterprise is considered.
Confronted with economic crisis and fierce competition nowadays, world oil companies pay more attention to the managements and redundancy of human resources. Hence it is of vital importance to study further about the optimization of personnel and determine the most rational number of staff in oil companies in order to lessen the overheads and meet the demand for talents. A regression model for employees...
Energy planning through optimization techniques is not a new concept, although different new models have been proposed and used over the last 30 years. Top down versus bottom up models have been analyzed to characterize the studied context, according to the final scopes. Improvements have been added while making (i) the models bigger and (ii) more complicated to catch more details and to understand...
The transesteriflcation of crude cottonseed oil with methyl acetate to biodiesel catalyzed by combined lipases (Lipozyme TL IM and Novozym 435) was investigated. The significant variables of transesterification (methanol concentration, combined lipases concentration and reaction temperature) were screened from six variables by PlackettBurman (PB) design and were further optimized via response surface...
Although oil price rises rapidly in recent 10 years, China's macroeconomic situation has not been dampened by high oil price. High oil price and China's economic growth even demonstrates a positive relationship. Taking Chinese data from 1993 Q1 to 2008 Q2 as the research sample, the paper examines the causes of the dynamic relationship between oil price fluctuation and China's macroeconomic development...
The hydrocarbon deposits have stimulated worldwide efforts to understand gas production from hydrate dissociation in hydrate reservoirs well. This paper deals with the potential of gas hydrates as a source of energy which is widely available in permafrost and oceanic sediments. It discusses methods for gas production from natural gas hydrates. Authors provide a detailed methodology used to model gas...
The From 1964 to the present, after 45 years of growth, Industrialization development of Shengli Oilfield Company of SINOPEC have come through a great change from ??oil drilling?? to ??development??, from ??development?? to ??system development??. Now it enters a new stage where three basic factors of economy, resources and management are cooperated to lead decision-making of oilfield. And previous...
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