The source analyses, which is to determine sediment source location and the nature as well as the process of moving path, which can also reflect the whole process of the basin structural evolution, is important analysis of basin evolution and restore the ancient environment of the basis. Gulongnan region is located in Daqing, Heilongjiang province, and it located in the central depression area in northern Songliao basin—southern of Gulong sag. The area is under the control of the system of multiple source, thereby dividing each source system control is of great significant to determine sedimentary microfacies types, sedimentary evolution and sedimentary microfacies distribution and predicting favorable facies belt development area .
Key words: The provenance analysis, Basin evolution, Sedimentary microfacies
[1] Wang Zhengjiang, Chen Hongde, Zhang Jingquan. The research and prospect in provenance analysis [J].Sedimentary Geology and Tethyan Geology, 2000, 20 (4): 104~110
[2] He Zhonghua, Liu Zhaojun,Zhang Feng. Latest progress of heavy mineral research in the basin analysis[ J].Geological Science and Technology Information, 2001, 20(4 ) : 29~32
[3] Liu Li, Hu Chunyan. Provenance significance of the main detrital composition in sandstone [J].Sedimentary Facies and Palaeogeography, 1991, 11(6): 48~53
[4] Zhao Hongge. Approaches and Prospects of Provenance Analysis [J].Acta Sedimentologica Sinica, 2003.9, 21(3):410~411 [5] Xu Yajun, Du Yuansheng, Yang Jianghai .Prospects of Sediment Provenance Analysis [J]. Geological Science and Technology Information, 2007.5, 26(3):27~28
After environmental correction, logging data still has the system deviation caused by different logging tools' calibration between logging suites and the factors of manipulate. In order to reduce the effect of not-geological factor to the logging data, according to the characteristics of the area, mainly using tendency surface analysis method, the correction method of combined with frequency of distribution histogram method and mean correction method as auxiliary to standard the logging data(taking sonic logging curve for example) of Putaohua Reservoir in the north of Jilin Daqingzi oilfield. Compared with the physical property of coring wells before and after the correction, the combined correction method can provide accurate basic data for log interpretation which is more suitable for the studied area than using either the frequency of distribution histogram method or the tendency surface method alone.
Keywords: - well logging normalization; tendency surface analysis method; frequency of distribution histogram; combined correction method
This paper represents that the sedimentary rhythm is a primary factor to control the distribution of water flooded zones in the thick-layer sand. The electrical properties of layers in the same well are comparable and the water flooded level discrimination has more practical significance only in the same sedimentary rhythm. The stable mudstone barrier bed is adopted as the separable symbol for different interpretation units that are identified from well logging curve so that only one sedimentary rhythm is contained in each interpretation unit. The average slope angle of resistivity curve and relative center of gravity of density curve are adopted as discriminant parameters for identifying the original sedimentary rhythm by computer in each interpretation unit.
Keywords: original sedimentary rhythm; interpretation unit; level of water flooded; relative center of gravity; average slope angle; well logging
Daqing Oilfield has entered extra high water cut period, in the case of the North West, North Saertu Development Area beierxidong block has the water flooding and chemical flooding, history of wells is complicated, but the area still contains a large amount of residual oil. The main purpose of this stage is to develop and adjust the main purpose is to find the remaining oil, the remaining oil recovery. With the development of the computer, the petrel software is developed by the Schlumberger Corp, which can be easily and quickly to build three-dimensional geological model to quantitatively characterize the reservoir. Through the integrated use of geological, seismic and logging data, the establishment of structural model and attribute model, the fine description of reservoir space geological characteristics, development and adjustment of oil and gas reservoirs has important guiding significance, so as to further improve the recovery ratio of the residual oil.
Keywords: -3D geological modeling, stochastic modeling, structural model, sedimentary facies model and attribute model.
In the background of shallow water delta front facies, the reservoir of study area is affected by the river and wave double force. The continuity of sand is poor. The difficulty of correlation presents many ways. Such as the lack of maker bed in Putaohua Reservoir, unconspicuous distinction of correlation, interferred by spin echo deposition of underwater distributary channel, the change in the pattern of stacked sands, the division of classes of base level cycle. Based on the principle of high-resolution sequence stratigraphy, the ways of correlation and using core data, analysis and test data, logging data, seismic data establish high-resolution sequence stratigraphic framework, which is of great significance to guide the development and production of oil field.
Key words:Puxi oil field, Putaohua reservoir, High resolution sequence stratigraphy, Methods of stratigraphic correlation
[1] Deng Hongwen. Discussion on problems of applying high resolution sequence stratigraphy [J]. Journal of Palaeogeography, 2009, 05:471-480.
[2] Cong Lin.High resolution sequence stratigraphy and hydrocarbon accumulation model of Putaohua oil layer in the east of Sanzhao depression [D].Northeast Petroleum University, 2011.
[3] Liu Zongbao, Ma Shizhong, Sun Yu, Zhan Jingang, Lu Yanfang. High-resolution sequence stratigraphy division and depositional characteristics of Putaohua reservoir, Sanzhao Depression [J].Acta Sedimentologica Sinica, 2008, 03:399-406.
[4] Establishment of high resolution isochronal stratigraphic framework of Fuyu oil bearing layer in Shuangcheng gas field. Science Technology and Engineering, 2011, 05:947-951.
[5] Zhao Hui, Ma Shizhong, Gan Liqing. Shuer area Dalinghe oillayer in Liaohe oil field sedimentary facies analysis [J]. Science Technology and Engineering, 2012, 26:6772-6776.
Concrete is one of the important icon of construction industry. The use of concrete in construction industry intensified due to rapid development and research. After water, concrete is the second most frequently used material worldwide. The assimilation of waste material in concrete is very common from the last few decades, because of their technical tendency regarding environmental pollution and reduction of cost as well. During the production of cement, a large amount of carbon dioxide (greenhouse gas) releases which effects the environment badly. This work is carried out by using Rice Husk Ash (RHA) in concrete as a partial replacement of Ordinary Portland Cement (OPC). RHA is a byproduct of farming scum. RHA contains a bulky amount of silicon dioxide. The pozzolanic reactivity of RHA boost to use it as a cementious material in concrete. OPC was replaced with RHA at 0%, 5%, 10% and 15%. Addition of RHA in concrete is a sustainable approach, it reduces the pollution and provides strength and reduces the cost as well. Tests were performed on fresh as well as hardened concrete after 7, 14 and 28 days of curing in water, Hydrochloric acid and in sulfuric acid. The value of compressive strength of incorporated sample is more as compared to controlled sample. Results indicates that the addition of RHA improves the properties of concrete which includes packing density. It increases the strength and durability of concrete in term of sulphate and chloride resistance.
Keywords: - Rice Husk Ash, Cementious, Compressive Strength, Ordinary Portland Cement, Pozzolanic
Telfairia occidentalis (ugu) is an important crop grown for its leaf vegetables and edible seeds. It ranks first among many consumed vegetables in Nigeria, and it brings good returns compared to other common tropical leafy vegetables (TLVs). Currently, producers are finding it difficult to expand their capacity due to the predominant traditional methods of its production and postharvest operations. It is found that the lack of engineering research input is responsible for non-mechanization of Telfairia occidentalis production and postharvest operations. Researchers have concentrated on the crop breeding, its dietetics, economics, and food science. In order to boost Telfairia occidentalis production and enhance its postharvest operations for the satisfaction of the local market all year round, and for possible export in the global market, the crop mechanization will have to replace the traditional methods. So, development of seed drill / planter, packaging and handling techniques for the pods, seeds and freshly harvested leaves, and designing of pods and seeds storage facilities become a necessity. However, the mechanization can only be achieved if engineering properties of both the pods and the seeds are determined to generate empirical data for design purposes. Besides, effective storage technique for the fresh leafy vegetables needs researchers' attention since the drying method currently in use shows great loss of pigmentation and valuable nutritious constituents.
Keywords: Telfairia occidentalis, ugu, mechanization, storage, leaf, seed, pod.
Polyurethane is a material that can be found in many products that we use in our daily lives. They
represent a class of polymers that have found a widespread use in the medical, automotive and industrial fields.
Polyurethane is a general term used for a class of polymers derived from the condensation of polyisocyanates
and polyalcohols. Polyurethanes are favorably characterized by their substantial tensile strength and high
melting points which enables them to be extremely durable. They have proven to be excellent replacements of
plastics because of their resistance to degradation by water, oils, and solvents. After years of production of
polyurethane, manufacturers found them susceptible to degradation. There are many reports on the degradation
of polyurethane by microorganisms, especially by fungi. Microbial degradation of polyurethane is thought to be
mainly due to the hydrolysis of carbonyl bonds. The main objectives of this research are to investigate
polyurethane (PUR) degradation by the bacterium Pseudomonas stutzeri. In order to confirm that Pseudomonas
stutzeri persist in the medium despite the high concentration of polymer, and the degradation process continues
until the total disappearance of the polymer. Results were justified by Infrared spectroscopy.
Keywords: biodegradation, Pseudomonas stutzeri, polyurethane, infrared, Impranil DLN.
At present, the technique of dual redundancy CAN-bus is mainly implemented by software, so that it has the disadvantages of low reliability and bad real-time performance. Built on the error handling rule in CAN specification version 2.0, a hardware redundancy management unit is creatively put forward in this paper. Based on FPGA, a kind of customized Dual Redundancy CAN-bus Controller (DRCC) is designed. By downloading the IP Core into a XILINX's SPARTAN-3 chip to test, it has been verified that the design could completely meet the requirement for high real-time performance and reliability, with a bright prospect for the future.
Keywords: - Dual Redundancy CAN-bus; Verilog; FPGA; IP Core
© 2019 All Rights Reserved | Design by iosrjen