The closure of fractured mudstone is resulted from the deformation under the changing of stress condition, also decreased the permeability of formation, as well as shrinking the production of oil and gas wells to zero. The focus of the study is how to quantify the effect of stress change on crack closure, and the selection of the appropriate characterization parameters. We see from the obvious level, the fractures of mudstone are influenced by the change of stress, the most apparent change among parameters is the formation permeability. If we make the permeability as the parameter to characterize the degree of mudstone fracture closure, then the concentration should be the specific value we quantified to distinguish the stress leading to closure in this value, it is what my research would focusing on. In this essay, we have stimulated underground fractured mudstone conditions by artificial fracture to study the natural core of mudstone, also applied the method of displacement pressure with the experimental study of mudstone fracture closure.
Key words: mudstone; fractured reservoir; displacement pressure; closure pressure
[1] RANDY LAFOLL ETTE, GARY SCHEIN. Understanding the Barnett Shale [J]. Oil and Gas Investor, 2007, J an.: 12215.
[2] KENT A BOWKER, GEORGE MORETTI, LEEUTL EY. Fayetteville Maturing [R] . Oil and Gas Investor, 2007, J an.: 14217.
[3] Luo RuiLan, Cheng LinSong. Determination of the low permeability core permeability with effective overburden pressure changes in the relationship between new method [J]. China Petroleum University Journal (NATURAL SCIENCE EDITION), 2007, 31 (2): 87-90.
[4] Li Chuanliang. Evaluation method of stress sensitivity of reservoir rocks [J]. Daqing petroleum geology and development, 2006, 25 (1): 40-42.
[5] Li Shibin, the numerical simulation of the residual width of the fracture surface of the clear water fracturing [J]. Journal of petroleum, 2010, 31 (4): 680-683.
SQL injection vulnerability is the one of the most common web-based application vulnerabilities that can be exploited by SQL injection attack to gain access to restricted data, bypass authentication mechanism, and execute unauthorized data manipulation language. Defensive coding is a simple and affordable way to tackle this problem, however there are some issue regarding use of defensive coding which makes the system in effective, less resistant and resilience to attack. In this paper we provide detailed background of SQLIA (SQL Injection Attack), classified defensive coding to different categories, reviewed existing technique that are related to each techniques, state strength and weakness of such technique, evaluate such technique based on number of attacks they were able to stop and evaluate each category of approach based on its deployment requirements related to inheritance. The goal of this paper is to provide programmers with common issues that need to be considered before choosing a particular technique and to raise awareness of issues related to such techniques as many of those techniques were not meant for the purpose of protection of SQLIA. In addition, we hope to provide researchers by shedding light on how to develop good SQLI (SQL Injection) protection tools as most of the SQLI protection tools were developed using combination a of two or more defensive coding techniques. Lastly we provide recommendations on to avoid such issues.
Keywords: SQL Injection, Defensive Coding, Injection Parameter, SQLI vulnerability.
[2] Mihir Gandhi, JwalantBaria 2013. SQL INJECTION Attacks in Web Application International Journal of Soft Computing and Engineering (IJSCE) ISSN: 2231-2307, Volume-2, Issue-6.
[3] Raghav Kukreja , Nitin Garg 2014. OVERVIEW OF SQL INJECTION ATTACK international journal of innovative research in technology Volume 1 Issue 5.
[4] Ms. Mira K. Sadar et al 2014. Securing Web Application against SQL Injection Attack: a Review International Journal on Recent and Innovation Trends in Computing and Communication ISSN: 2321-8169 Volume: 2 Issue: 3
[5] Neha Mishra , Sunita Gond 2013. Defenses To Protect Against SQL Injection Attacks International Journal of Advanced Research in Computer and Communication Engineering Vol. 2, Issue 10
[6] R. Joseph Manoj et al 2014. An Approach to Detect and Prevent Tautology Type SQL Injection in Web Service Based on XSchema validation. International Journal Of Engineering And Computer Science ISSN: 2319-7242 Volume 3 Issue 1
Rotational effects influence the aerodynamic performance of wind turbine rotor severely. The objective of this research attempted to study the rotational effects in the vicinity of the wind turbine blade surface. Detailed flow measurements on wind turbine blade were performed in a wind tunnel. The test wind turbine has a three-bladed rotor with a radius of 1.2m. Each blade is twisted and tapered as same as commercial wind turbine blade. The maximum power coefficient of the test wind turbine is 0.43 at the tip speed ratio of 5.2. The measured velocities around blade section were detected using a Laser Doppler Velocimetry (LDV) while the pressure distributions on blade surface were detected using 32 pressure sensors for the rotating condition. All experiments were conducted for an optimum tip speed ratio. As a result, it is clarified that the rotational effects appear obviously on the inboard of the blade. The axial and tangential velocity components indicate strong velocity gradients on the leading edge and trailing edge. The rotational effects increase the sectional lift force and delays transition point in the inboard.
Keywords: - Wind turbine, Pressure distribution, LDV, Three-dimensional flows, Aerodynamic forces
[1] GWEC. Global wind report annual market update 2014, http://www.gwec.net/wp-content/uploads/2015/03/GWEC_Global_Wind_2014_Report_LR.pdf, Access 2015.07.25.
[2] A. Betz, Introduction to the theory of flow machines (Pergamon press, 1966).
[3] W. Rozenn, A. Ioannis, S. M. Pedersen, S. C. Michael, and H. E. Jørgensen, The influence of the wind speed profile on wind turbine performance measurements, Wind Energy, 12(4), 2009, 348–362.
[4] G. Ronsten, Static pressure measurements on a rotating and a non-rotating 2.375 m wind turbine blade. Comparison with 2D calculations, Journal of Wind Engineering and Industrial Aerodynamics, 39(1), 1992, 105–118.
[5] D. Wood, A three-dimensional analysis of stall-delay on a horizontal-axis wind turbine. J. Wind Eng. Ind. Aerodyn.37(1), 1991, 1–14.
Sufficient conditions for the existence of solutions for a class of m-point boundary value
problem involving Caputo fractional derivative are established using fixed point theorems. Banach
fixed point theorem, Schaufer's fixed point theo- rem and Leray-Schauder type nonlinear alternatve are
applied to study existence results.
Keywords: - Boundary value problem, existence results, Caputo fractional derivative, fixed point theorems
In order to study the Chinese northeast basin group in the northeast of trap distribution, and trap types and forming time. By seismic exploration in this area, the author of this paper several basin are studied, including the Sunwu-Jiayin basin, Yanji basin, Hulin basin, Boli basin, Jixi basin, Sanjiang basin, soup of the original fault depression, founder and Murray green fault. The results show that trap the region starting from the early cretaceous development is given priority to with structural trap, stratigraphic trap and lithologic trap less developed, from north to south, reduce gradually.
Keywords:- Northeast China Early Cretaceous Structural trap Stratigraphic trap Lithologic trap
[1] Cao Chengrun,Zheng Qingdao.The east of heilongjiang province group of residual basin tectonic evolution characteristics and significance of oil and gas exploration[J].Journal of Jinlin University(Earth Science Edition),2003,33(2):168~172.
[2] LiuZhihong, Mei Mei, Gao Junyi, et al.Structural Features,Formation Mechanism of Hulin Basin and Deformation Time of Northeastern Segment of Dunhua-Mishan Fault Zone in Northeast China[J].Journal of Jilin University: Earth Science Edition,2014,44(2):480-489.
[3] Jia chengzao,Zheng Min.Northeast cretaceous big sanjiang basin sedimentary tectonic evolution and residual basin group of oil and gas exploration significance.Journal of Daqing petroleum institute,2010,34(6):1~12.
[4] Yang Haibo,Liu Jinwei,Zhang Liguo,Guo Qingxia.Accumulation characteristics of tectonic characteristics and oil gas in Tangyuan fault[J].Global Geology,2006.25(3):276~281.
[5] Luo Qun,Bai Xinhua.Tangyuan fault depression characteristics of fault structure and its control effect on hydrocarbon and gas[J].Journal of Changchun University of Science and Technology,1999,29(3):248~251.
The comprehensive classification and evaluation of reservoir is a very important comprehensive work in reservoir research. In synthesis, pore types and image analysis the individual evaluation technology based on, all kinds of methods to provide information on reservoir in a systematic, comprehensive analysis, reservoir to the objective interval layer characteristics to put forward the evaluation opinions, according to the requirements of different wells type is proposed for regional prediction opinions. The main content of the evaluation is to evaluate the value of the reservoir by the range of values and the characteristics of certain properties.
Keywords: - Reservoir prediction,Geological statistics inversion,Reliability evaluation
In this paper we present the development of own laser diode excitation system. This system is compose by software and hardware. The purpose of this system is to excitation- control of laser diode with 532nm of wavelength. The selection of this diode laser is because weworkedon previous investigations related with amplitude and frequency phase function. With this we starting to obtain results, considering the stability of laser diode for the amplitude modulation. We presents the analysis and electronic designto monitoring the responses of optical intensity. With this paper we want to emphasize that is NOT necessary to user the owner software to control the system, you can use a free software to develop a custom systems.
Keywords: Control, Laser Diode, Electronic, photothermal, Power, Software.
A case study of the transformation of a job shop production orientation to a cellular production orientation for a family of pole-mounted conveyor belt cleaning products is described. Quick response manufacturing ideas drive the transformation primarily by minimizing customer lead time as opposed to efficiency and high utilization of equipment. The case study shows that the corporate target lead time of one day can be met by the cellular approach. In addition to the elimination of finished goods inventory, several benefits of the cellular approach were identified including minimizing the use of material handling equipment, record keeping, and worker retraining as well as increasing production agility in response to large orders.
Keywords: -Quick Response Manufacturing, Cellular Manufacturing, Job Shop Conversion
[1] R. Suri, It's about time: the competitive advantage of quick response manufacturing(New York, NY: CRC Press, 2010).
[2] C. Standridge, Beyond lean: Simulation in Practice 2nd Ed. (http://scholarworks.gvsu.edu/books/6/, 2013)
[3] R. G. Askinand S. Estrada, Investigation of cellular manufacturing practices, in S. Irani (Ed.), Handbook of cellular manufacturing systems, (New York: John Wiley & Sons, Inc., 1999)
[4] L. Rubrich andM. Watson, Manufacturing cells: One piece flow and the key to employee empowerment and ownership, inImplementing world class manufacturing(Fort Wayne Indiana: WCM Associates, 1998)
[5] K. Sekine, One-piece flow: cell design for transforming the production process(Portland, OR: Productivity Press 1992)
According to the analysis of structural evolution,the fault system in Wuerxun sag was divided into four types:early extensional faults,interim strike-slip faults, early extensional—interim strike-slip faults,and early extensional—interim strike-slip—late reversed faults.In terms of the relationship of superposed faulting, early extensional—interim strike-slip—late reversed faults played a role of adjustment to hydrocarbon accumulation.At the same time,the research which includes sand distribution and its relation with faults helps us understand that the matching of "fault-sand" controled the Damoguaihe hydrocarbon accumulation.
Keywords: - Wurxun sag;Damoguaihe formation;Fault system;Accumulational mode
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