bluuebunny/crossref_metadata_2025_split huggingface dataset:
A new exchange flow computational method of quasi-one-dimensional flow between matrix and fractures in Fractured Reservoirs
Authors: Zheng Huan , Shi Anfeng , Wang Xiaohong 
Published: November 2019

Abstract
Natural fractured reservoirs exist widely in the world. The heterogeneous porous medium was idealized to be a uniform system of the fracture and matrix for the convenience of numerical simulation. The traditional method to describe the flow exchange between the matrix and fracture is using a function related to shape factor and the pressure difference between the matrix and fracture. However, this classical model cannot be applied for the incompressible fluid. A new exchange flow computational method between matrix and fractures of quasi-one-dimensional flow in fractured reservoirs is proposed in this article. Numerical simulations are performed to demonstrate that the proposed method can provide more accurate results.
Determination and Analysis of polycyclic aromatic hydrocarbons (PAHs) in Building Dust Fine particles (PM2.5)
Authors: Liu Yuanyuan 
Published: November 2019

Abstract
Based on construction of dust particles extraction of polycyclic aromatic hydrocarbons in the optimized analysis, to determine the optimal experimental conditions of ultrasonic extraction of polycyclic aromatic hydrocarbons; Determination of polycyclic aromatic hydrocarbons are normalized concentration analysis, Phenanthrene (PhA) was the highest, accounting for 29.1% of the total PAHs, followed by Naphthalene (NaP) 18.9%, Benzo[b] fluorathene (BbF) 13.1%, Pyrene (Pyr) 8.2%; building the dust PM2.5 fine particles of polycyclic aromatic hydrocarbons the source component spectrum, provide analysis data for the control and management of pollution sources.
Study on the Changes and Influencing Factors of Industrial Carbon Emission in Beijing-Tianjin-Hebei Region
Authors: Yuan Qingming , Zhang Baorong 
Published: November 2019

Abstract
Aiming at the characteristics of industrial carbon dioxide emissions in the Beijing-Tianjin-Hebei region in the past decade, the relationship between carbon dioxide emission intensity and socio-economic impact factors in various regions was studied by co-integration test. The study found that there is a long-term equilibrium relationship between carbon dioxide emission intensity in the Beijing-Tianjin-Hebei region and industrial scale, industrial structure, and energy structure. From the data of the past ten years, the industrial structure will be a long-term factor affecting the industrial carbon emissions of Beijing-Tianjin-Hebei.
Effects of application of nitrogen, phosphorus and potassium on soil fertility and enzyme activities of pear jujube under straw mulching
Authors: Ye Shenglan , Peng Biao 
Published: November 2019

Abstract
In this experiment, the effects of different fertilization treatments on soil nutrient content and enzyme activity under straw mulching conditions were studied by using the soil of jujube garden for 4 consecutive years. The results showed that different fertilization treatments significantly improved the soil fertility of the pear jujube garden in the loess hilly region. In the vertical section of the soil, the soil organic matter content decreased with the increase of soil depth, showing 0∼20 cm>20∼40 cm>40∼60 cm. And the total nitrogen content ofN3P3K1 was the highest at 40∼60 cm, which was 0.28 g/kg, which was 47.4% higher than that of CK. The available phosphorus content of N3P3K1 treatment was higher than other treatments at 20∼40 and 40∼60 cm, and its content was 4.4 and 3.6 g/kg. Different fertilization treatments affected soil enzyme activities. The urease activity of N3P3K1 treatment was 299.27 μg/g, which was 88.2% higher than that of CK. The effect of single application of phosphate fertilizer was the most significant, 54.17 μg/g, which was 98.1% higher than that of CK. Comprehensive analysis N3P3K1 treatment can more effectively improve soil fertility, improves soil enzyme activity, and is conducive to planting and producing pear dates.
Spatial and Temporal Patterns of Wetlands in Hebei Province
Authors: Wang Qian , Li Jinlu , Liang Zhongya 
Published: November 2019

Abstract
Wetland is an important part of the ecosystem and important research subject in global environmental change and sustainable development. This study parents a wetland analysis of Hebei Province in China for the period from 2009 to 2017, on the basis data statistics and GIS technology. The results show that, wetland area decreased from 27.0×104 hm2 to 24.0 ×104 hm2, decreased of 3853.42 hm2 with an average annual, decreased rate 0.7%-2.4%. The structure of costal shoal, inland shoal and marshland remained at 0.36:0.60:0.04 level. The transition between wetland and other types of land were calculated by Matrix Model of Land Transfer. The results show that the wetland area mainly from cultivated land, water -water conservancy facilities land and woodland, mainly converted to urban industrial land and transportation land. The characteristics of spatial and temporal pattern change is significant. where wetlands have declined dramatically are concentrated in four areas. They are District of Bashang Plateau-Yanshan Mountain northern, District of Qin-Tang-Cang coastal city, Central plain of the province, Southwest of the province respectively.
Research on Land Development Intensity Control Based on GIS Multi-Dimensional Model
Authors: Luo Jing 
Published: November 2019

Abstract
This paper takes the central city of Malone as an example to establish a basic database of GIS and construct an urban land development intensity control system. Research on the introduction of land mass potential, economic benefits, human settlements and other factors, from different dimensions to establish a benefit model, economic model, environmental model, comprehensive determination of the study area control intensity indicators. The conclusion shows that the area with high strength F of grid unit development is located in the south of Malong Old Town, the most part of the east-west main road and the adjacent areas in the east and west. From the overall F-value spatial distribution, the development intensity of the southwest is suitable for a higher floor area ratio (FAR). Secondly, the development intensity of the northwestern region is suitable for a relatively low construction floor area ratio (FAR).
Numerical Calculation of Pipe-soil interaction Subjected to Unstable Slope
Authors: Han Bing , Fu Qiang 
Published: November 2019

Abstract
The integrity of oil and gas pipelines is seriously impacted by unstable slopes in tough terrain in western China. The quantitative evaluation technology is an effective method for pipelines risk management under the threat of geohazard. In order to establish the pipeline vulnerability evaluation indexes under effect of unstable slope, the finite element method is adopted to simulate unstable slope movement, pipeline mechanical behavior and pipe-soil interaction by changing geometrical sizes and mechanical characteristics of them, such as the material composition of unstable slope, movement type of unstable slope, diameter and wall thickness pipelines. The regularity for change of stresses and deformations of pipeline subjected to unstable slope can be obtained by means of numerical calculation.
Heterogeneity evaluation method for double-high stage of fault block reservoir and its application
Authors: He Shumei , Zhang Jialiang , Feng Guojun , Cheng Qi , Huang Fang , Wei Pengpeng , Zhou Jian , Liu Tongjing 
Published: November 2019

Abstract
The study of reservoirs’ macro-heterogeneity is one of the important research contents of secondary development and tertiary oil recovery in high water cut period reservoirs. The GX oilfield is a terrestrial sedimentary fault block reservoir. In the development area, there main develop structure reservoir, and the faults are developed intricately. Due to the combined effects of sedimentary environment, diagenesis and tectonism, the heterogeneity of reservoir plane and longitudinal are extremely strong, and the geological characteristics and development effects of different development units in the same interval are great different. In this paper, the GX1 fault block is taken as an example. The thickness of the reservoir, the geometry of the oil layer and the uneven distribution of the permeability are considered on the plane. The overlap of the sand body, the interlayer and the intra-layer permeability difference are considered on the longitudinal direction. Through the conduct research on the well pairs that have established the corresponding relationship between injection and production, regarding the quantitative results of the seepage capability between wells as basis, also considering the characteristics of stage development, to carry out the time-varying of heterogeneous and the target block’s seepage capacity from the dynamic point of view. The research provides scientific support for the secondary development adjustment, tertiary oil recovery design and “two-three combination” enhanced oil recovery technology research to GX oilfield.
Study on the Influence of Pulping Process on Rheological Properties of Coal Water Slurry
Authors: Ge Lei , Li Junguo 
Published: November 2019

Abstract
The fluidity of the coal water slurry during transportation, the stability during storage, and the combustion characteristics during atomization combustion have a great relationship with the rheological properties of the coal water slurry. In this chapter, the zwitterionic humic acid graft copolymer coal water slurry dispersing agent HSC and anionic humic acid graft copolymer dispersing agent HS were used to prepare Binchang coal water slurry. Dispersing agent, pulping concentration and temperature were discussed. The effect on the rheological properties of coal water slurry. The result shows that the coal water slurry made by HSC and HS with graft structure has obvious yielding pseudoplastic fluid characteristics, while the NSF and HA coal water slurry show slight yielding pseudoplastic fluid characteristics. With the increase of pulping concentration, water coal the apparent viscosity, yield stress and flow coefficient of the pulp show an increasing trend. The greater the pulping concentration, the flow characteristics of the coal water slurry will develop to the yielding plastic fluid; for the pulp made by HSC, when the pulping concentration At 67 wt%, the slurry exhibited a slight yielding plastic fluid characteristic. For the HS slurry, when the pulping concentration was 68 wt%, the slurry exhibited a slight expansion plasticity characteristic. At 25 ° C, the fluid model of the coal water slurry yields a pseudoplastic fluid, after which the elevated temperature can weaken the yield pseudoplastic properties of the slurry and cause the slurry to transform into a plastic fluid.
Application of binary compound water control technology in the development of horizontal wells in offshore oil fields
Authors: Liu Yigang , Zhang Yunbao , Xue Baoqing , Lu Yikuan , Wang Jia , Zhou Jian , Liu Tongjing 
Published: November 2019

Abstract
Offshore A oil field is a typical bottom water reservoir with thin thickness of oil layer and large thickness ratio of water layer and oil layer. Due to its strong bottom water energy, serious non-homogenous and the impact of the bottom ridge, most of the horizontal well production segment is seriously water out.Based on interaction relationship between horizontal segment trajectory and oil and-water interface, the distribution and contrast of permeability along horizontal segment and the comprehensive analysis of production performance, this paper combines the characteristics of the residual oil distribution of typical wells and the mechanism of dual compound oil addition, and from the perspective of combining theory with the field creatively put forward the dual composite water control mode of first injecting gel segment plug and then injecting foam. then completed the design of dual compound water control mode and dosage of the typical well. After processing water control measures, the production data shows that the water content decreased significantly after opening the well, from 95.1% before water control to 80%, which was 15% lower. Also the oil production rate has a significant increase from 2.3t/d before water control to maximum to 9t/d after implementing control measures and cumulative oil increase is 550t with effective period of 135 days. The effect of oil and precipitation is obvious.
Simulation of acoustic wave equation in viscoelastic media by ONADM method
Authors: Huang Rong , Wang Zhiliang 
Published: November 2019

Abstract
The propagation of acoustic wave in viscoelastic media is of extremely important in seismic exploration, seismology and so on. This paper propose a novel difference scheme for acoustic wave equation in viscoelastic media simulation, named Optimal approximate analytic discretization method (ONADM). This is a new method which can suppress numerical dispersion effectively in larger space step in recent years. The purpose of this paper is to study the propagation of acoustic wave in viscoelastic media by using ONADM method. Finally, The numerical results demonstrate that the ONAD method for acoustic wave equation in viscoelastic media has obvious advantages.
Research on the influence of cross mining on advance support technology of overburden roadway
Authors: Yuan Benqing 
Published: November 2019

Abstract
70%∼80% of the roadway is affected by mining, the most prominent problem is roadway maintenance under the influence of cross-mining. In this paper, the support of a rock backwind roadway in the east NO.4 mining area of a coal mine in huai-nan mining area is studied under the influence of mining in the lower 11-2 coal seam, The comprehensive support method of hollow grouting anchor cable anchoring and block erection is developed, and has carried on the successful application in the practice.
Research progress on migration and accretion of Nadanhada terrane
Authors: Qu Guohui , Liu Ning , Meng Yuanlin , Li Xiunan 
Published: November 2019

Abstract
The Nadanhada terrane is the most developed area of Mesozoic marine strata in eastern China. The migration process of the Nadanhada terrane is restored from two aspects of Palaeomagnetism and biopalaeogeography. It is concluded that the subduction of the oceanic plate to the continental margin of East Asia is accompanied by the strong deformation of the sedimentary cover during the growth of the Nadanhada terrane. Under the continuous compressive force generated by the subduction of the oceanic plate to the continental margin of East Asia, accretionary wedges continue to form in the direction of oceanic basin. At the same time, large detachment planes gradually form between accretionary complex and the basement of the Jiamusi massif. The evolution history of the Nadanhada terrane can be divided into five stages: the drift stage, the accretion stage of the continental margin, the bending stage of the terrane structural line, the compression stage of the terrane and the anticlockwise rotation stage of the terrane. Bijin terrane can be seen as the extension of Nadanhada terrane in NNE direction.
Advances in tectonic genesis of Nadanhada terrane
Authors: Qu Guohui , Liu Ning , Meng Yuanlin , Li Xiunan 
Published: November 2019

Abstract
The Nadanhada terrain is the most typical terrain in Northeast China. It is located on the West Bank of the Wusuli River in the east of Heilongjiang Province. The division of tectonic units in Nadanhada area includes five stages: geosynclinal fold zone, Mesozoic subduction zone around the Pacific Ocean, back-arc marginal sea, orogenic belt and terrain formed by the closure of forearc basin, and so on. During the Mesozoic, the northeastern China was affected by the Mongolia-Okhotsk Ocean closure and the subduction of the Paleo-Pacific Ocean, and a large-scale tectono-magmatic activity took place. At the same time, the Nadanhada terrane drifted from low latitudes and eventually grew on the eastern side of the Jiamusi massif. Therefore, the Nadanhada terrane was formed in an oceanic environment. During the Mesozoic, it was situated on the continental margin of East Asia and formed terrigenous turbidite at the trench. At the same time, it underwent continuous subduction and local accretion, and finally formed a complete sedimentary sequence including oceanic siliceous rocks and terrigenous melanges. The direction of the tectonic line of the Nadanhada terrane changes from north to south, from NNE to NNW, and then to NW, showing an arc structure protruding westward. The direction of the present tectonic line can not represent the direction of its formation. It is the direction after the transformation of Dunmi fault left-lateral strike-slip activity and Sikhot-Alin region whole rotation.
Research and Analysis on the Change Characteristics of the Driving State of Low-Molecular Polymers in Three Types of Oil Layers
Authors: Li Xuefeng 
Published: November 2019

Abstract
Daqing Oilfield Co., Ltd. passed the oil field test in Zone A of the company area on the three types of oil layers with effective thickness less than 0.5m and permeability less than 0.050 μ m2. After the company’s oil production area in Block A has been injected for more than 6 years, it has been found that the method has achieved good oil and precipitation effects. This paper analyzes the dynamic characteristics of injection wells and production wells after injection, and compares with the first and second types of oil layers, and summarizes the variation rules of low-segregation driving states of the three types of oil layers, which is important for guiding the development of the three types of oil layers in the future. significance.
Application of research based on fine geology in oilfield development
Authors: He Jinbao 
Published: November 2019

Abstract
As the oilfield development enters a high water-bearing stage, the water content of the main oil layer gradually increases, the inefficient and ineffective circulation is serious, and the remaining oil distribution is scattered. It is difficult to select the well and reservoir. Through comprehensive development of high-density 3D seismic work, the study area further elaborates the sedimentary microfacies of the reservoir, making the development of the reservoir and the connectivity between the oil and water wells clearer. At the same time, applying the well-seismic combination technology to the fault Understanding, further clarifying the relationship between injection and production, the understanding of the underground situation is becoming more and more clear. Based on the comparison and application of the fine geological research results in the study area, this paper expounds the role of fine geological research results in the remaining oil potential tapping in the extra high water cut period.
Soil parameters inversion and influence based on MIDAS GTS
Authors: Sun Zoning , Liu Tao , Ma Shuo 
Published: November 2019

AbstractThe foundation pit engineering design is continuously optimized and improved. With the development of scientific computing, especially the finite element analysis software technology in the popularization of soil parameter inversion, it provides a new technical approach. Midas GTS was developed to quickly complete the analysis and design of geotechnical and tunnel structures. It provides a variety of theoretical analysis and design functions, as well as a variety of constitutive and user-defined constitutive models to properly analyze the safety of foundation pit design. has become an important method for obtaining effective parameters in recent years.
Groundwater storage changes for 35 basins over MENA domain using GRACE during the period 2003-2017
Authors: Eltahan Muhammed , Alahmadi Sabah 
Published: November 2019

AbstractChange of water storage over Middle East and North Africa (MENA) domain is presented during the period 2003-2017 using satellite data which is provided by the space mission, Gravity Recovery and Climate Experiment (GRACE). Thirty-five basins over MENA domain are selected. Fourteen basins showed positive trend (increase) in water storage while the remaining basins showed negative trend (decrease) in the water storage. Our analysis revealed that most of the basins near the equator had positive trend (increase in storage) in groundwater changes in addition to showing periodic (increasing and decreasing) change. Volta basin highest monitored groundwater storage with 24.5cm within year 2010. On other hand, basin CHAASBasin174 has the lowest negative water storage by 20.5cm during year 2015.
Geologic feature and tectonic evolution in the South Yellow Sea
Authors: Xing Tao , Chen Hongwen , Chen Xi , Yang Li 
Published: November 2019

Abstract
South Yellow Sea is mainly located on the Yangtze platform, which is a sequence residual basin that has been migrated and superimposed since the late Proterozoic, and has been transformed many times to make the original appearance incomplete. South Yellow Sea Basin has a complex process of formation and evolution. South Yellow Sea has the characteristics of north-south block and east-west zoning. The fault is dominated by the direction of NEE, NE and NW. The fault zone has large extension length and staggered structures in all directions, which is featured by multi-type and multi-order. The main magmatic rocks in the South Yellow Sea are Yanshan period magmatic rock, and the distribution of rock mass is controlled by NE fracture, and has the characteristics of multi-stage activities with large and frequent strength. Since its formation, the South Yellow Sea region has experienced six tectonic movements, among which Yizheng Movement, the First Act of Wubao Movement, and Sanduo Movement are three major tectonic movements. The structural relationship and interaction between the Sino-Korean Block and Yangtze Block as well as Yangtze Block and South China Block, would provide important insights to the formation and evolution process of South Yellow Sea Basin, and the activity of Eurasian plate and the interaction between the surrounding plates.
Study on Experimental Construction of a Novel Brine-based Drilling Fluid for Salt-Anhydrite Formation
Authors: Lin Feng , Chang Congbing , Xu Lin , Wang Shengxiang 
Published: November 2019

Abstract
The salt-anhydrite formation has a highly negative impact on well construction, which can cause various drilling accidents upon drilling. In combination to salt-anhydrite characteristics of Missan Oilfields, a novel type of brine-based frilling fluid was established. The weighting manner of fixed salinity was evaluated, and key additives, viscosifier and filtrate reducer, were determined by single-factor experiments. The formula of brine-based drilling fluid was constructed as: fresh water + 0.6wt.% VIS + 2wt.% S-FLO+ (25wt.% NaCl + 5wt.% KCl + 8wt.% HCOONa) fixed salinity, which will be essential for further developing multifunctional high-density drilling fluids.
Laboratory optimization on performance of high density brine-based drilling fluid
Authors: Wang Shengxiang , Xu Lin , Yang peilong 
Published: November 2019

Abstract
The brine-based drilling fluid is paramount for drilling operation in the salt-anhydrite formations. In this work, a novel high density brine-based drilling fluid was designed and established, based on the features of salt-anhydrite formation in Missan Oilfields. A suite of laboratory tests has been carried out to comparatively evaluate effect of key additive amounts on standard properties of drilling fluids. The formula of the high density brine-based drilling fluid was optimized. The newly developed brine-based drilling fluid possesses excellent rheology, filtrate, thermal stabilization, inhibition and lubricity properties, which can provide an alternative to drilling through the salt-anhydrite formation in Missan Oilfields.