bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis on anti-corrosion and anti-scaling technology of water injection well in oil production plant
Authors: Dong Yuning 
Published: July 2020

Abstract
Petroleum resources are an important resource used in modern industrial production and a very widely used resource. In the current oil extraction plant, the phenomenon of corrosion and scaling of water injection wells is an important issue affecting the efficiency of oil extraction. The application of anti-corrosion and anti-scaling technology for water injection wells can not only reduce the scaling phenomenon of water injection wells, but also help the exploitation of the current petroleum industry. In this paper, the author analyzes the causes of corrosion and scaling in long oil-injection wells based on specific examples, and puts forward the application of anti-corrosion and scaling technology in wells of oil production plants.
Study on the method of improving fracturing effect by waterflooding in extra high water cut stage
Authors: Zhao Li 
Published: July 2020

Abstract
After the oil field enters the stage of “double ultra-high” development, the development potential turns to the reservoir with worse development, and it is more difficult to identify the remaining oil. In order to meet the requirements of potential tapping under the new situation and achieve accurate potential tapping, the conventional fracturing technology has been continuously developed and improved by strengthening the analysis of remaining oil, optimizing the scheme design and other methods, effectively making up for the decline of production of old wells. At the same time, on the basis of conventional fracturing technology, aiming at the characteristics of reservoir and well pattern, the new high-efficiency fracturing technology represented by fracture controlled sand body fracturing and three types of reservoir pressure flooding is explored, which realizes the breakthrough of low production well productivity in poor reservoir and expands the fracturing technology.
Response characteristics of organic carbon storage in sandy soil to sandstone
Authors: Guo Zhen , Cao Tingting , Yang Chenxi 
Published: July 2020

Abstract
The soil structure and quality can be improved by the improvement of the sand by using the weathered material of the sandstone. In this study, four kinds of mixed soils with mixed sandstone and sand ratios of 0: 1 (CK), 1: 5 (C1), 1: 2 (C2), and 1: 1 (C3) were selected as research objects. The results showed that the soil organic carbon showed a difference only in the 10-20 cm soil layer. Compared with the CK treatment, the content of organic carbon in the sandstone treatment was significantly reduced by 30.06% -46.36%. The bulk density in each soil layer increases with the increase of the proportion of sandstone. There was no significant difference in soil organic carbon storage in each soil layer. The organic carbon storage in C1 treatment was 13.87% lower than that in CK treatment, and the organic carbon storage in C2 and C3 treatments increased by 4.40% and 3.22% respectively compared to CK treatment. Therefore, when the mixed ratio of sandstone and sand is 1: 2, the improvement effect on sandy soil is better.
Intelligent Evaluation of Crack detection with Laser Ultrasonic technique
Authors: Li Kesi , Sui Hao , Dong Xun , Guo Liang , Gao Hongli 
Published: July 2020

Abstract
In this paper, an intelligent evaluation method is proposed to quantitatively characterize surface-breaking cracks based on laser ultrasonic technique and the quantized particle swarm optimized support vector regression algorithm. Based on the physical model analysis, interactions between laser-generated surface acoustic waves (SAWs) and different cracks is numerically investigated. By selecting crucial features of the transmissions and reflections after interacting with cracks, the crack depth is evaluated with the optimized algorithm. To verify the proposed method, experimental datasets containing twelve different depths were used to size the surface-breaking cracks with incomplete prior knowledge. Evaluation results showed the high accuracy of the proposed evaluations, demonstrating the feasibility of this intelligent method for various applications in industry.
Experimental study on wettability of crude oil on the surface of plastic alloy pipe in an oilfield field
Authors: Wu Yan , Ding Haopeng , Liu Wei , Wen Ziyan , Deng Zhian , Miao Kun 
Published: July 2020

Abstract
Non-metallic pipe is widely used in oilfield development in recent years because of its excellent corrosion resistance. In this paper, the wetting properties of the plastic alloy tube surface based on the contact angle of crude oil in some oil fields in Xinjiang Oilfield were experimentally studied. The wettability of the plastic alloy tube surface and its influence on the flow resistance were discussed. The wettability of metal surfaces was compared. This experimental study is helpful for the oilfield to make reasonable pipe selection.
Automatic gas leak detection system
Authors: Wang Shuai , Gong Bin , Liu Yang , Li Wankun 
Published: July 2020

Abstract
With the development of submarine oil and gas resources, people pay more and more attention to the safety of pipeline transportation. Once an oil and gas leak occurs in the submarine transportation pipeline, it will not only cause direct economic loss but also damage the marine ecology. Therefore, it is particularly important for underwater gas leak detection research. Due to the difficult underwater detection operation and the high labor cost, an embedded module with automatic gas leak detection function is designed and completed in this paper. This paper analyzes the imaging characteristics of multi-beam sounding sonar images, and designs a set of underwater gas leak detection algorithms. The algorithm mainly includes: median filtering, bottom detection, top-hat processing, maximum entropy image segmentation, connected area labeling, nearest neighbor interpolation based on backward mapping, linear upward trend estimation based on Hough transform, and testing of 120 images, With an accuracy rate of more than 98%.
Experimental research on proportioning of similar materials for coal and gas outburst simulation
Authors: Dai Linchao 
Published: July 2020

Abstract
Coal and gas outburst similar materials are the basis for coal and gas outburst simulation experiments. The study of similar materials helps to more accurately reduce the phenomenon of coal and gas outburst. By using the pulverized coal, sodium humate and river sand as raw materials, through the orthogonal experimental design, outburst coal similar materials are studied, and the physical mechanics such as the uniaxial compressive strength, elastic modulus and density of similar materials under different mixing ratios are obtained. The results show that under the molding pressure of 20MPa, the uniaxial compressive strength range is 1.335 to 2.527 MPa, the elastic modulus range is 117.45 to 302.00 MPa and the density range of similar materials is 1.308 to 1.438 g/cm3. Sodium humate content and pulverized coal ratio are the main influencing factors controlling the uniaxial compressive strength and elastic modulus of similar materials, while river sand content is the main influencing factor controlling the density of similar materials.
Brittleness Evaluation of Chang7 Reservoir in Longdong Area Based on Mechanical Parameters and Stress-strain
Authors: Li Zhenhua , Zhang Suya , Cao Feng 
Published: July 2020

Abstract
Brittleness determines the effect of reservoir fracturing and is the key to improve unconventional oil and gas production. In order to accurately understand the brittleness and fracture parameters of the reservoir, triaxial compression test and stress-strain analysis were carried out on the Chang 7 rock samples from well N-1 and well Z-1 in Longdong area of Ordos basin, based on which, the brittleness index was calculated. The results show that the brittleness index calculated by stress-strain method is 51.95%-52.96% and by mechanical parameters method is 57.2%-57.5%; the brittleness index is high, indicating that chang7 reservoir in Longdong area has high brittleness, which is conducive to later fracturing.
Design and numerical simulation of a self-adaptive variable-diameter robot for in-pipe non-destructive inspection
Authors: Ling Zhangwei , Yu Xuefen , Yan Sunting , Chen Yonggui 
Published: July 2020

Abstract
This paper presents a design method and numerical simulation result of an smart in-pipe inspection robot with capability of adjusting its diameter to adapt to pipelines of non-constant inner diameter insensitive to non-smooth imperfect inner surface due to corrosion or erosion. A variable-diameter component consisting of a motor, gear wheels, a screw and nut drive system and a bar linkage is introduced to achieve this self-adaption. Moreover this paper presents a force-balance analysis by virtual displacement principle relating the normal force and internal spring force and conducts a numerical simulation of dynamic process of a 3D mechanical model across diameter-varying sections in horizontal, vertical manners and records transient inner spring force. The paper has significant reference merit for engineering application to ensure safe operation of pipelines.
Analysis and research on coal quality in Hetaoyu coal mine
Authors: Gai Ke , Tang Jiayao , Qi Huili , Zhang Kejun , Zhang Yuquan 
Published: July 2020

Abstract
In this paper, industrial analysis and element analysis were used to determine the quality of coal after the determination of various indicators, then hetaoyu coal quality was determined. It is found that the coal in this area is characterized by extremely low total moisture, low ash, medium and high volatile content, high calorific value, high caloric value, and low sulfur content. It is beneficial to realize the comprehensive utilization of clean, efficient, low-carbon and energy-saving coal.
Study on Sealing Technology of Gas Drainage Borehole under Damage of Surrounding Rock in Deep Mine Roadway
Authors: Yuan Benqing , Xu Zunyu 
Published: July 2020

Abstract
In order to solve the problems of poor drainage effect and low efficiency caused by poor sealing quality of deep gas drainage boreholes, based on the gas geological conditions in Huainan mining area, comprehensive theoretical analysis and field engineering practice, the distribution law of surrounding rock fracture zone in different lithologic roadways was studied, and the sealing technology combining pressure grouting, screen pipe protection and deep and shallow hole grouting was put forward. Field tests showed that the technology was effective. The average gas extraction concentration and hundred hole extraction purity of boreholes are 3.75 times and 3 times higher than those of common boreholes respectively, and the field application effect is remarkable.
Efficient Management and Application of Mine Fire Prevention Data
Authors: Xu Zunyu , Yuan Benqing 
Published: July 2020

Abstract
In view of the current monitoring and effect investigation of coal seam fire prevention measures and technologies, it has the characteristics of numerous on-site observation points, large data volume, poor effectiveness and low efficiency, which brings great difficulties to the analysis of coal seam fire prevention situation. In this paper, the arrangement of observation points of coal seam fire prevention measures or technical requirements is combined with the result of fire prevention data processing to avoid the isolation of fire prevention data analysis. It can directly show the data, curve and changing trend of coal seam fire prevention and extinguishing in the measuring point layout. It can timely and effectively put forward the corresponding coal seam fire prevention measures to improve the mine fire prevention management measures.
Analysis of Outburst Disaster Characteristics and Countermeasures of 3# Coal Seam in Hancheng Mining Area
Authors: Ji Fei 
Published: July 2020

Abstract
In view of the current situation of 3# coal seam with large thickness, high gas pressure and content, weak coal seam, poor permeability and serious coal and gas dynamic disasters in the mining area, this paper combs and deeply analyzes the gas geological occurrence law and the characteristics of gas dynamic disasters in Hancheng mining area. The research results show that the gas disaster of 3# coal seam in Hancheng mining area is mainly the instantaneous outburst caused by the structural stress based on the high ground stress and the mining stress concentration, and the creep time-delay Outburst under the quasi-static load based on the high ground stress will occur in some abnormal soft areas. Based on this, the paper puts forward to strengthen the geological exploration work, and to prevent and control the coal and the coal from the aspects of gas drainage and stress removal The technical thinking of gas outburst disaster provides theoretical guidance for the prevention and control of gas dynamic disaster in mining area.
Study on the main influencing factors of oil-flood recovery factor of oilfield in extra-high water cut period
Authors: Wang Gang 
Published: July 2020

Abstract
Recovery factor is the most important comprehensive index to measure oilfield development effect and development level. Starting from the production history data of development indicators and influencing factors, this paper mainly evaluates the oilfield development effect from the transient perspective of recovery factor. The results show that the current recovery rate is higher but the recovery factor is lower. Mathematical methods such as gray correlation analysis and reservoir engineering principles analyze the main factors that affect oil recovery and oil recovery rate. According to the current recovery factor determined by the dynamic method according to the determined typical block, compared with the similar typical block, the four influencing factors are analyzed longitudinally from the historical change trend, and the next step to improve the recovery rate of the block is given. Main adjustment countermeasures. The proposed method and analysis results have certain reference value for the theoretical research and practical application of the development of ultra-high water cut oil fields.
The Research about Back Pressure and Permeability of Heterogeneous Core Affecting Fractional Flow Rate of Plugging Agent
Authors: Chen Yufang , Dong Yanan , Guo Zhiqiang , Li Peijing , Zhang Zufeng , Wei Xiaomin , Zhou Fushuang , Li Xuewei 
Published: July 2020

Abstract
In order to improve the selective plugging effect of high pressure layer which was during the process of commingled chemical water plugging in heterogeneous layer. This paper carried out the parallel core group experiment to research influence of back pressure and permeability contrast affecting fractional flow rate of acrylic plugging agent. The experimental results show that for parallel core group with different permeability contrast, with increased of pressure difference, fractional flow rate of the low pressure core gradually increased, indicating that inter-layer pressure difference in core group was main factor affecting fractional flow rate. With pressure difference increased from 0 MPa to 2 MPa, fractional flow rate of low pressure core gradually increased from 0 to 100% when permeability contrast is 12.55, fractional flow rate of low pressure core increased from 0 to 31.5% when permeability contrast is 105.5, fractional flow rate of low-pressure core increased from 0 to 10.5% when permeability contrast is 333.3. According to the experimental results, this paper proposed a proposal for selectively plugging high pressure layer in heterogeneous layer with inter-layer pressure difference and permeability contrast, that is, when permeability contrast was less than 105.5, temporary plugging agent should be injected to plug low pressure layer temporarily, and then water plugging agent was injected to plug high pressure layer. The lab experimental results show that after temporary plugging agent was injected, fractional flow rate of high pressure core increased from 0 to 98.8%, and fractional flow rate of low pressure core decreased from 100% to 1.2%, which achieved experimental purpose of selectively plugging high pressure core.
Intervisibility calculation model of monitoring hole and optimization of device installation position
Authors: Yin Kun , Liu Zhenxing , Song Jialiang , Li Zehan , Liao Hongbo , Chen Zhongkai 
Published: July 2020

Abstract
Aiming at the laser monitoring of the strain of the underground pile foundation of buildings, this paper establishes the intervisibility calculation model of a single monitoring hole, and optimizes the installation position of the monitoring device. The results show that the calculation results of the model are basically consistent with the measured data, which solves the problem of repeatedly adjusting the laser when measuring the maximum intervisibility in the past. Finally, the sum of the maximum intervisibility of all monitoring holes is significantly increased by optimizing the installation position.
Study on Petroleum Standard Attention Index Calculation based on the Entropy Weight Method
Authors: Xu Ting , Qin Changyi , Zhang Hua , Qu Yixin , Fang Wei 
Published: July 2020

Abstract
In this paper, the author analyzes and delves specialty distribution, attributes, attention, and other information about China’s national standards in the petroleum industry on the basis of quantitative statistics on such standards and research on attention therefor. The Entropy Weight Method (EWM) is then applied to make comprehensive measurement from three indexes of standard details query clicks, online reading clicks and download clicks, with standard attention index and corresponding ranking obtained, providing a basis for comprehensive understanding of standardization development status and trend of the petroleum industry in China.
Research and application of pre-draining coal seam gas technology with three-dimensional cross drilling
Authors: Yang Liping 
Published: July 2020

Abstract
In view of the current situation of low extraction efficiency and poor extraction efficiency of Yangquan No.5 mine 15# coal seam in, in order to ensure the daily safe and efficient production of coal mines, the three-dimensional cross-drilling technology was used to conduct field test on the drainage effect of the bedding in the 8401 working face, and compared with the gas drainage technology of traditional drilling arrangement methods such as plane cross hole and parallel hole arrangement. The result shows that after the gas extraction of the three-dimensional cross-drilled hole in the 8401 working face, the average extraction volume per 100 meters reaches 0.0097m3/min.hm, the attenuation coefficient is 0.0725d−1, and the extraction effect is better than that of the plane-intersecting holes and the parallel arrangement of holes, which effectively reduces the occurrence of coal mine accidents and opens up a new technical way for coal mine gas drainage.
Research on Pressure Controls of High Pressure Tubing Based on Simulation Model
Authors: Hou Xiaodan , Li Xiaorong 
Published: July 2020

Abstract
High pressure oil pipeline is the basic component of many fuel engines, and it has great application and development value in transportation, aerospace and other national defense military. This paper examines ways to control the pressure change in the high pressure tubing under the condition of intermittent fuel entry and ejection. On the basis of determining the balance equation of each part of the injection system, this paper presents different design schemes of the high pressure fuel system under different operating parameters of the high pressure tubing by establishing the simulation model.
Research on Sensor Correction Method for Monitoring in Early Warning System of Coal Spontaneous Combustion
Authors: Deng Jun , Liang Ce , Chen Weile , Zhao Jiaxiang , Yao Hanwen 
Published: July 2020

Abstract
According to statistics, there are as many as 4000 coal spontaneous combustion accidents every year, causing heavy casualties and property losses. By accurately detecting the change of index gas concentration, it can provide reliable criteria for identifying and warning the early hidden dangers of coal spontaneous combustion. The improvement of sensor precision is the basis of intelligent monitoring. Modification of wireless multi-parameter sensor used in coal mine is of great significance for accurate monitoring of gas concentration in coal mine. In order to modify the wireless multi-parameter sensor, the high and low temperature experiments of the sensor were carried out at -5∼45°C, and the real values of O2 concentration at 15%, 21%, 25% and CO concentration at 175ppm, 250ppm and 375ppm were measured. Measurement data was Non-linear fitting and correction by using SVM (Support Vector Machine), BP neural network and Elastic Network regression method. The experimental results show that the Elastic Network regression compensation reduces the O2 sensor from the original maximum mean absolute percentage error (MAPE) of 18.4% to 0.52%, and the average MAPE decreases from 13.89% to 0.21%. Using the SVM nonlinear compensation, the CO sensor is reduced from the original maximum MAPE of 43.2% to 1.6%, and the average MAPE is reduced from 21.38% to 1.4%. Elastic Network regression compensation excellent achieves nonlinear compensation of O2 sensor. The SVM better realizes the nonlinear compensation of the CO sensor. Through non-linear compensation, wireless multi-parameter sensor can better meet the requirements of coal mine gas concentration monitoring.
Application of Source-to-Sink System in the Prospect Analysis in Early Stage of Sandstone Uranium Exploration
Authors: He Feng , Zhang Zilong , Liu Hongxu , Jia Cui 
Published: July 2020

Abstract
In-situ leaching sandstone uranium deposit has the advantages of low mining cost and environmentally friendly. The research ideas from “source” to “sink” are applied to the study of the mineralization of sandstone-hosted uranium deposits. Prospect areas are predicted by studying the source-sink system of sandstone uranium deposits. Soil radon survey is carried out in prospect areas to delineate the abnormal range of soil radon and to reduce the scope of the favorable exploration area. Accurately determining the exploration area is conducive to reduce the damage to vegetation and environment in the exploration area, and to achieve the goal of green exploration.
Study on Soil Quality Improvement in Weibei Taiyuan District
Authors: Cao Tingting , Li Juan , Shi Chendi , Sun Xubo 
Published: July 2020

Abstract
In order to fully understand the spatial change characteristics of soil quality after land remediation in Weibei Taihe District, this paper takes Long County, Weibei Taihe District as an example, selects some project areas after land remediation, conducts soil nutrient testing, and studies the organic matter and nitrogen, phosphorus, and potassium in the soil. The distribution characteristics of soil and the quality of soil were graded. The scientific evaluation of the quality of newly cultivated land in the area after land remediation showed that, except for the organic matter content in the land remediation area of Dingma Village, other indicators and other The regional indicators are in compliance with the standards. According to the traditional fertility improvement methods, the soil organic matter content is lower than the standard. The organic matter can be improved by applying organic fertilizer and promoting the return of straw to the field. It is suggested that through the combination of cultivated land and cultivated land, crop rotation and stubble should be implemented to ensure balanced supply of nutrients to the newly-added cultivated land so that the development of cultivated land can achieve sustainable, stable and high yield.