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In order to use aerator on setting tank in practical production, we use air flotation to increase oil removal. The small imitated experiment research of setting tank linked with air flotation are applied, different technological parameters such as: aerated way, release way, reflux ratio and dosing concentration are considered beyond tests. As a result, when reflux ratio is among 15∼20%, dissolved...
Fuel oil was prepared from waste cooking oil by catalytic cracking and catalytic reforming processes. The preparation of reforming catalyst and the process of catalytic reforming have been investigated. The conditions of the preparation of reforming catalyst were as follow: ZSM-5/H38 zeolite was using as the catalytic carrier, calcination temperature was 550°C and lanthanum oxide content was 6%. Reforming...
More emission of high-value C3 /C3+ components and higher energy consumption has been troubling the Absorption-Stabilization System in an oil refinery. In this paper, a brand-new process and operation case has been suggested based on the process integration, resulting significant energy save and C3 /C3+ recovery. Where, the condensed oil tank to be operated in higher temperature; the stripper to be...
Epoxy resins made from natural materials have numerous advantages over those made from petroleum derived chemicals. Isosorbide and its isomers, isomannide and isoidide, can react similarly to bisphenol A to produce diglycidyl ethers that may be used as epoxy resins. These materials have comparable mechanical properties to bisphenol A based epoxies when produced under similar conditions. However, the...
Chang 6 oil-layer in Huaqing district of Changqing oilfield is a typical thick oil layer with ultra-low permeability. After 2 years' water flooding development, some of the production wells have been flooded with low oil recovery. Based on the geological model of Huaqing district, the ideal numerical models are established using the nonlinear flow numerical simulation software. Then the characteristics...
This paper introduced a newly developed coal flotation collector EDO and its flotation characteristics for five different coals. EDO is an emulsion composed of 27% diesel oil, 70% water and 3% surfactants. The surfactant PGS is synthesized with oil which is environmental favorable and reproducible. Compared flotation experiments show that, at the same dosage, EDO give 2-7% recovery promotion than...
In our study, we constructed a ultra-low field (ULF) nuclear magnetic resonance (NMR)/magnetic resonance imaging (MRI) system employing a high-temperature superconductor (HTS)-rf-SQUID and room-temperature coils. In the system, we employed a pulsed polarizing field Bp perpendicular to a measurement field Bm; a high-speed switching circuit with an optical FET was used to switch off Bp of approximately...
A method for on-demand droplet coalescence and mixing is realized using laser-induced cavitation bubbles. Water droplets are formed using a microchannel with the coupled T-junction structure. Laser-induced cavitation bubbles are generated inside water droplets to deform the droplets, which break up the continuous phase between the droplets and trigger the fusion process. The diffusion dominated mixing...
How to persue the best development effects and economic benefits by a reasonable number of wells in oil field development process is a very important issue. Filtration of preponderant oil reserve is significant for enhancing oil recovery and saving economic cost. Oilfield development is a gradual process. The best block will be usually aimed for the first objective of development. However, quality...
The temperature has violent influence on the test accuracy on the moisture content of crude oil by microwave. Establishing the affection of temperature, especially high temperature, plays an important role in improving the accuracy of detection. Indoor equipment of testing moisture content of oil-water mixture by microwave was built, which fulfill the test conditions with temperature 20°C-200°C and...
Optoacoustic spectroscopy detection is one of the newest detection methods. It can detect the weak-absorbed specimen with high-sensitivity. In this treatise, the technique is applied to detect the water quantity in oil. There are two spectral absorbing wave bands of water, so the innovation of this project lies in adopting laser sources with two different wave bands. This can effectively strengthen...
Droplet-based micro-reactor systems have been investigated by many researchers and used in bioengineering and micro total analytical systems (μTAS). In these applications, individual water droplets in oil perform as micro-reactors. Generally, a magnetic stirrer and a homogenizer have been used to produce water droplets in oil. For these studies, fluorocarbon oil is an attractive candidate for the...
Water is a byproduct of ageing reactions in cellulosic insulation. During the life of a transformer water content in paper increases from levels below 0.5% in weight after manufacturing, to levels of 6% in weight at the end of transformer life. High humidity levels may also be found in not so old transformers, for example in those that have been submitted to repairs in field. As it is well known,...
Oil-in-water emulsions are important in the petroleum industry as a displacing fluid for enhanced oil recovery. In the present study commercially available gear oil was used to prepare oil-in-water emulsions. Characterizations of the emulsions were performed with respect to their physicochemical properties and size distribution of the dispersed oil droplet in water phase. Experiments were also carried...
Candle nut (Aleurites moluccana) is very popular in Indonesia, mostly it is used in cooking. The candlenut oil contains 15% oleic acid, 40% linoleic acid, and less than 30 % linolenic acid, it contains high unsaturated fatty acids, which is a prospective raw material for epoxidation. To obtain value-added products from locally available renewable natural resources, epoxidation of candle nut oil was...
We report on an ultra-fast, pulse laser-driven droplet generation (PLDG) mechanism that enables on-demand droplet generation up to 10,000 droplets/sec, and continuous tuning of injected droplet volume ranging from 1pL to 150pL with precise volume control (0.26% volume variation) in a microfluidic device. On-demand droplet generation in PLDG is realized by focusing intense laser pulses into water to...
Oil pollution can reduce effective porosity of porous medium, and may make surface wettability changed, which consequently change of the characteristics of capillary water movement in the unsaturated zone. In this paper, indoor standpipe method is used to study capillary water movement in diesel and engine oil-contaminated coarse sand, as well as the effect of oil pollution on porous medium capillarity...
In the drivability analysis design of foundation piles of offshore oil platform, it needs a comprehensive consideration of soil fatigue surrounding the pile. Engineering practice repeatedly indicates that the currently widely used calculation method for soil fatigue effect is not adapted to the drivability analysis. Calculation method for soil fatigue should be different between clay and dense sand...
The paper refers to the field assessment activities necessary for the construction works of transport routes for the easy oil fractions from the vapour space of 3 gasoline storage tanks, considering the case when the tanks are filled as well as those necessary for the construction works of transport routes for the collecting of the gasolineoline vapors generated when loading the tank cars. For this...
For multilayer sandstone reservoir 1, high permeability water passage would be formed between oil well and water well at the later stage of water drive. This caused the injected water circulation with no or low efficiency and thus decreased the production of oil wells. In order to improve the effect of water drive, measures of profile control and/or water shutoff must be taken. The key problem is...
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