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Vol. 09, No. 03 [March 2023]

Paper Title :: A smart vehicle with multi-functions of paving straw-checker board, fixing sand, and planting
Author Name :: Bingjing Zhu || Haijie Yang || Yixin Zhang || Tianyu Wang || Qiwei Jian || Chunyan Zhang
Country :: China
Page Number :: 01-05
A smart vehicle is designed with multi-functions, such as straw grid laying and vegetation seeding. The vehicle realizes the automatic and integrated laying of horizontal and longitudinal straw curtains and then carries out climbing plow sowing and planting auxiliary work. The straw tubes can also be replaced automatically. The vehicle can realize human-computer interaction, remote control, and other intelligent operations through an APP and voice module, this intelligent equipment can be used in harsh environments with serious desertification.
Key Words: Straw curtain integrated laying, plowing seeding, automatic weeding, human-computer interaction, remote control
[1] Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery, Volume 38, Issue 7, Pages 99-102+120, July 2007
[2] WANG Liang, YUAN Bowen, LIU Yanmei, TANG Wenhao, LIU Yiling. A kind of straw-checkered sand barrier automatic laying device. Hunan University of Arts and Sciences.202111445745.4
[3] LI Xian, ZHU Hua, XIA Shuaiying, CHEN Long, PENG Tianqi. An adjustable loading and unloading type windproof sand fixation planting vehicle. Jiangxi University of Science and Technology.202122432494.9
[4] TAO Binbin,GUHeng,ZHUXinlei, XU Hui, YANG Caiwei, WANG Yongjie. Strawcheckered auxiliary sand control cart. Anhuijiang Institute of Technology.202210156348.4
[5] QI Xiaomin, SUN Yuquan, SUN Yonghao, WANG Jingping, YAO Minghui, LI Chaoyang, DU Fangjie. Automatic strawcheckered laying mechanism. Anhui Polytechnic University.202210120618.6


Paper Title :: Statistical Evaluation of Undulating Tortuosity on Liquid Accumulation in Gas Wells
Author Name :: Agbora Fabari Dumleand Uche Osokogwu
Country :: Nigeria
Page Number :: 06-19
Liquid accumulation has been known to occur in gas wells flowing under liquid loading regime. Previous solutions have been provided that considered flow parameters such as gas velocity, flow rate and surface tension, but this work considered the impact of the tortuosity of the wellbore path. Tortuosity of the wellbore is basically the measure of deviation of the wellbore from a straight path. Data was obtained from literatures and from the industry. Introducing critical assumptions of a truly vertical well and using Microsoft Excel, two regression models were developed that showed a linear relationship between the true vertical depths and gas liquid ratio which was used to measure the accumulation of liquids in the wellbore. This linear relationship can be explained as the action of gravity on coproduced liquids. This is because for wells flowing under the liquid loading regime, the velocity of the gas is below critical thus, coproduced liquids fall back under the action of gravity. The First model was preferred because it had a root mean square error value that was significantly less than the other. This result proves that for wells under the liquid loading regime, liquid accumulation increases with depth and solutions to lift liquids would be more effective at points closer to the well bore. Also, using this model, production engineers can spot the point liquid removal methods such as ESP can be applied. Further studies on this subject matter that introduces the dogleg severity at known depth and removes the critical assumption of a truly vertical well should be able to develop a model that shows the depths at which the velocity of the gas is below critical.
Key Words: Tortuosity, Liquid Loading, Gas well, True Vertical Depth, Velocity
[1]. Abughaban M. F., Bialecki B., Eustes A. W., de Wardt J. P. and Mullin S. (2016). “Advanced Trajectory Computational Model Improves Calculated Borehole Positioning, Tortuosity and Rugosity.” SPE IADC Drilling Conference and Exhibition, Fort Worth, Texas, USA, March 1-3, 2016. Pp. 1-4
[2]. Alison B. and Bill H. (2008). “Deliquification Basics” 3rd European Conference on Gas Well Deliquification, September 15-17, 2008. Pp. 9-10
[3]. Barnea D. (1986). “Transition from Annular Flow and from Dispersed Bubble Flow-Unified Models for the Whole Range of Pipe Inclinations.” Int. J. Multiphase Flow. 12, (5) Pp. 733-744
[4]. Barnea D. (1987). “A Unified Model for Predicting Flow-Pattern Transitions for the Whole Range of Pipe Inclinations.” Int. J. Multiphase Flow. 13, (1) Pp. 1-12
[5]. Belfroid S.P.C., Alberts G. J. N., Veeken C. A. M. and Biezen E. (2008). “Prediction Onset and Dynamic Behaviour of Liquid Loading Gas Wells.” SPE Annual Technical Conference and Exhibition, Denver, Colorado, USA, September 21-24, 2008. Pp. 1-9












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