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Perforation optimization of layer-penetration fracturing for commingling gas production in coal measure strata

Petroleum Science 2022年第4期19卷 1718-1734页

作者： Bing Hou zhuang Cui Ji-Hui Ding Feng-Shou Zhang Li zhuang Derek Elsworth State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum-BejingBejing102249China MOE Key Laboratory of Petroleum Engineering in China University of Petroleum Beijing 102249China Department of Geophysics Stanford University397 Panama MallStanfordCA94305USA Department of Geotechnical Engineering Tongji UniversityShanghai200092China Korea Institute of Civil Engineering and Building Technology Goyang10223South Korea The Pennsylvania State University University ParkPA16802USA

Optimization of fracturing perforation is of great importance to the commingling gas production in coal measure *** this paper,a 3 D lattice algorithm hydraulic fracturing simulator was employed to study the effects of perforation position and length on hydraulic fracture propagation in coal measures of the Lin-Xing block,*** on field data,three lithologic combinations are simulated:1)a thick section of coal seam sandwiched by sandstones;2)a thin coal seam layer overlay by gas-bearing tight sandstone;3)two coal seams separated by a thin layer of *** simulation shows that perforation position and length in multi-layer reservoirs play a major role in hydraulic fracture *** maximum stimulated volume requires consideration of lithologic sequence,coal seam thickness,stress states,and rock *** improve the combined gas production in coal measure strata,it is possible to simultaneously stimulate multiple coal seams or adjacent gas-bearing *** these cases,perforation location and length also significantly impact fracture propagation,and therefore should be carefully *** simulation results using 3 D lattice algorithm are qualitatively consistent with laboratory physical simulation.3 D lattice models can be used to effectively simulate the fracture propagation through layers in coal measure *** numerical results provide guidance for perforation optimization in the hydraulic fracturing of coal measure strata.

关键词： Coal measure strata Combined production 3D lattice algorithm Perforation scheme optimization Fracture propagation

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Lithotectonic elements of Archean basement on the Liaodong Peninsula and its vicinity,North China Craton, China

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Frontiers of Earth Science 2019年第1期13卷 209-228页

作者： zhuang LI Bin CHEN State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum (Beijing)Beijing 102249China College of Geosciences China University of Petroleum (Beijing)Beijing 102249China Department of Earth and Space Sciences Southern University of Science and TechnologyShenzhen 518055China

The Liaodong Peninsula,in the northeastern part of the Eastern Block in the North China Craton,China, consists of lithologic units from Archean to Cenozoic in *** basement rocks consist of widespread amphibolite-to granulite-facies Archean supracrustal assemblages and granitoid gneisses,as well as Paleoproterozoic volcano-sedimentary successions that were intruded by granitic-marie complexes,and then metamorphosed under greenschist-to amphibolite-facies *** basement rocks are overlainby thick Mesoproterozoic- Cenozoic sedimentary sequences.A synthesis of the available petrological and geochronological data allowed us to establish a geological framework for the Precambrian basement on the Liaodong Peninsula and its *** basement can be subdivided into three tectonic units:the Neoarchean Liaonan Block,the Eo-Neoarchean Longgang Block,and the intervening Paleoproterozoic Jiao-Liao-Ji *** this paper we delineate the characteristics of an Archean tectonothermal event,and in a companion paper we examine the Paleoproterozoic lithotectonic *** samples of the Hadean eon are rare worldwide,but Hadean zircons have been identified in rocks of the Liaodong Peninsula,and they provide one of the oldest known mineralogical records on *** Archean gneisses in the Liaonan Block are dominated by quartz dioritic-granodioritic gneisses that were emplaced between 2.55 and 2.44 Ga,and these rocks later underwent a lower-amphibolite-facies *** the other hand,the Archean basement in the Longgang Block is dominated by TTG (tonalitic-trondhjemitic-granodioritic) and granitic gneisses,chamocldtes,and small amounts of supracrustal sequences with much older protolith ages of up to 3.85 Ga,and these rocks have undergone amphibolite-to granulite-facies *** magrnatism (ca.2.5 Ga)marked the end of the Archean tectonothermal event in the Eastern Block of the North China Craton.

关键词： Archean basement Liaodong Peninsula North China Craton

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Modeling hydraulic cracks and inclusion interaction using XFEM

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Underground Space 2018年第3期3卷 218-228页

作者： Bo He Xiaoying zhuang Institute of Continuum Mechanics Leibniz Universität Hannover30167 HannoverGermany College of Civil Engineering Tongji UniversityShanghai 200092China

In this study,we employ a coupled hydromechanical model to study the hydraulic fracture propagation path in porous media under the influence of existing pressurized *** hydraulic fracturing field study reveals that the existing natural voids and cracks alter the local properties of the porous media and influence the fracture propagation *** incorporate these phenomena into the presented hydromechanical model,which is constructed from the mass and momentum balance equations for saturated porous *** extended finite element method(XFEM)is applied for modeling the fluid flow through discrete *** nonlinear hydromechanical equations are solved by the Newton-Raphson scheme with an implicit time integration ***,numerical examples are presented and compared with experimental *** is found that the fracture propagation path is significantly influenced by the existing pressurized voids and essential properties of the porous media;that is,the crack trends to propagate towards the pressurized voids.

关键词： Porous media XFEM Hydraulic fractures Crack propagation

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A Self-growing Porous Calcium-based Adsorbent Derived from Biowaste for Efficient Wastewater Purification

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Chinese Journal of Structural Chemistry 2021年第10期40卷 1328-1336页

作者： LIN Liang zhuang Zan-Yong Fujian Chuanzheng Communications College Fuzhou 350007China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108China Key Laboratory of Advanced Materials Technologies(Fuzhou University) Fujian Province UniversityFuzhou 350108China

Traditional adsorbents are normally suffered from a low adsorption capacity that has a finite saturated adsorption capacity. We reported herein a hierarchical self-growing porous calcium silicate hydrate(CSH) that uses biowaste as the precursor and is highly efficient in wastewater purification. In the process of phosphorus removal, CSH can react with phosphorus in water and grow into the hydroxyapatite(HAP). The generation of HAP further increases the active sites while maintains the porous structure of pristine CSH. Subsequently, the HAP could conduct the efficient extraction of Pb^(2+) from wastewater based on the ion exchange between Ca^(2+) and Pb^(2+). Clearly, the CSH structure has self-growing structure using the pollutants as the building blocks, not only achieving high adsorption capacity for pollutants, but also maintaining the hierarchically porous structure that supports the high efficiency in the next cycling. We provide here an intriguing pathway to tackle bottleneck of the traditional adsorbents, i.e., a finite saturated adsorption capacity.

关键词： self-growing model high adsorption capacity biowaste porous materials wastewater purifications

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PBPK modeling and simulation in drug research and development

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Acta Pharmaceutica Sinica B 2016年第5期6卷 430-440页

作者： Xiaomei zhuang Chuang Lu State Key Laboratory of Toxicology and Medical Countermeasures Beijing Institute of Pharmacology and Toxicology Department of DMPK BiogenInc.

Physiologically based pharmacokinetic(PBPK) modeling and simulation can be used to predict the pharmacokinetic behavior of drugs in humans using preclinical *** can also explore the effects of various physiologic parameters such as age,ethnicity,or disease status on human pharmacokinetics,as well as guide dose and dose regiment selection and aid drug–drug interaction risk *** modeling has developed rapidly in the last decade within both the field of academia and the pharmaceutical industry,and has become an integral tool in drug discovery and *** this mini-review,the concept and methodology of PBPK modeling are briefly *** case studies were discussed on how PBPK modeling and simulation can be utilized through various stages of drug discovery and *** case studies are from our own work and the literature for better understanding of the absorption,distribution,metabolism and excretion(ADME) of a drug candidate,and the applications to increase efficiency,reduce the need for animal studies,and perhaps to replace clinical *** regulatory acceptance and industrial practices around PBPK modeling and simulation is also discussed.

关键词： PBPK PK prediction Absorption Metabolism Drug–drug interaction Special population

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The ecological role of dew in assisting seed germination of the annual desert plant species in a desert environment, northwestern China

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Journal of Arid Land 2016年第2期8卷 264-271页

作者： zhuang Yanli ZHAO Wenzhi Linze Inland River Basin Research Station Chinese Ecosystem Research Network Key Laboratory of Ecohydrology of Inland River Basin Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences

It is important to understand the effects of dew events on non-mucilaginous seed germination of annual desert plant species during dry seasons, which is critical to maintaining long-term soil seed banks in a harsh desert environment. We hypothesize that dew deposition also assists in the non-mucilaginous seed germination of annual desert species. A common field dew treatment experiment was conducted in the Linze Inland River Basin Research Station to investigate the effects of dew deposition on the seed germination of four annual species, including Agriophyllum squarrosum, Corispermum mongoficum, Bassia dasyphylla and Halogeton arachnoideus. The results showed that the presence of dew significantly increased seed germination percentages and decreased the nonviable seed percentages of B. dasyphylla and H. arachnoideus, whereas there was no such trend for the seeds of C. mongolicum and A. squarrosum. The ecological effects of dew on the seed germination and viability of the annual desert plants were species specific. Although dew wetting is insufficient to cause seed germination, it may help in priming the seeds.

关键词： dew deposition seeds hydration and dehydration seeds viability

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Identification and analysis of the inlet vortex of an axial-flow pump

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Journal of Hydrodynamics 2022年第2期34卷 234-243页

作者： Wen-peng Zhang Li-jian Shi Fang-ping Tang zhuang-zhuang Sun Ye Zhang College of Hydraulic Science and Engineering Yangzhou UniversityYangzhou225009China

Axial-flow pumps are widely employed in urban flood control and drainage pumping *** inlet vortex is one factor that seriously threaten the safe,stable and efficient operation of axial-flow pump *** this paper,the vortex recognition performances of two vortex identification methods,the Q—criterion and Liutex methods,are compared based on an axial-flow pump,and the interactions between the impeller and vortex are explored.A flat plate vortex generator is installed in front of the impeller to continuously induce a stable *** numerical simulation results show that the Liutex method can not only simultaneously identify strong and weak vortices but also reduce the influence of shear force at the *** vortex and the impeller influence each *** the influence of rotating blades,the vortex changes from a low frequency to the blade frequency,and the vortex significantly changes the tangential velocity inside the *** accuracy of the numerical simulation results is verified by experiments on the external and internal characteristics.

关键词： Axial-flow pump inlet vortex vortex identification vortex generator numerical simulation experiment

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Experimental Investigation of the Effect of the Material Damage Induced in Sheet Metal Forming Process on the Service Performance of 22MnB5 Steel

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Chinese Journal of Mechanical Engineering 2016年第4期29卷 747-755页

作者： zhuang Weimin XIE Dongxuan CHEN Yanhong State Key Laboratory of Automotive Simulation and Control Jilin University Department of Aeronautics Imperial College

The use of ultra-high strength steels through sheet metal forming process offers a practical solution to the lightweight design of ***,sheet metal forming process not only produces desirable changes in material properties but also causes material damage that may adversely influence the service performance of the material ***,an investigation is conducted to experimentally quantify such influence for a commonly used steel（the 22MnB5 steel） based on the hot and cold forming *** each process,a number of samples are used to conduct a uniaxial tensile test to simulate the forming *** that,some of the samples are trimmed into a standard shape and then uniaxially extended until fracture to simulate the service ***,a microstructure test is conducted to analyze the microdefects of the remaining *** on the results of the first two tests,the effect of material damage on the service performance of 22MnB5 steel is *** is found that the material damages of both the hot and cold forming processes cause reductions in the service performance,such as the failure strain,the ultimate stress,the capacity of energy absorption and the ratio of residual *** reductions are generally lower and non-linear in the former process but higher and linear in the latter ***,it is found from the microstructure analysis that the difference in the reductions of the service performance of 22MnB5 by the two forming processes is driven by the difference in the micro damage mechanisms of the two *** findings of this research provide a useful reference in terms of the selection of sheet metal forming processes and the determination of forming parameters for 22MnB5.

关键词： material damage sheet metal forming ultra-high strength steel 22MnB5 steel

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A Study of the Electrochemistry of Two Biacridine Derivatives and Their Application

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Chemical Research in Chinese Universities 2001年第4期17卷 394-399页

作者： Xu Xueqin zhuang Huisheng Chen Guonan 福州大学福建福州 350002

The electrochemlcal behavior of two new synthesized biacridine derivatives，3，3’－disulfonyl－9，9’－biacridine dinitrate（DSBADN）and 10，10’－dimethyl－3，3’－disulfonyl－9，9’－biacridine（DMDSBA）was investigated by means of cyclic voltammetry and linear sweep *** HCl solution，the reduction peak current was proportional to the concentrations of DSBADNand *** electrochemical study demonstrated that the reduction peak currents ofDSBADN and DMDSBA exhibited adsorptive and diffusion－controlled characteristics，and the

关键词： Biacridine derivatives Electrochemistry Histidine Tryptophan

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Effect of Trichoderma viride biofertilizer on ammonia volatilization from an alkaline soil in Northern China

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Journal of Environmental Sciences 2018年第4期30卷 199-207页

作者： Xia Wang Shengjun Xu Shanghua Wu Shugeng Feng Zhihui Bai Guoqiang zhuang Xuliang zhuang School of Life Sciences University of Science and Technology of China CAS Key Laboratory of Environmental Biotechnology Research Center for Eco-Environmental Science Chinese Academy of Sciences College of Resources and Environment University of Chinese Academy of Sciences

Ammonia（NH3） volatilization is one of the primary pathways of nitrogen（N） loss from soils after chemical fertilizer is applied, especially from the alkaline soils in Northern China, which results in lower efficiency for chemical fertilizers. Therefore, we conducted an incubation experiment using an alkaline soil from Tianjin（p H 8.37–8.43） to evaluate the suppression effect of Trichoderma viride（T. viride） biofertilizer on NH3 volatilization, and compared the differences in microbial community structure among all samples. The results showed that viable T. viride biofertilizer（T） decreased NH3 volatilization by 42.21% compared with conventional fertilizer（（CK）, urea）, while nonviable T. viride biofertilizer（TS） decreased NH3 volatilization by 32.42%. NH3 volatilization was significantly higher in CK and sweet potato starch wastewater（SPSW） treatments during the peak period. T. viride biofertilizer also improved the transfer of ammonium from soil to sweet sorghum. Plant dry weights increased 91.23% and 61.08% for T and TS, respectively, compared to CK. Moreover, T. viride biofertilizer enhanced nitrification by increasing the abundance of ammonium-oxidizing archaea（AOA） and ammonium-oxidizing bacteria（AOB）. The results of high-throughput sequencing indicated that the microbial community structure and composition were significantly changed by the application of T. viride biofertilizer. This study demonstrated the immense potential of T. viride biofertilizer in reducing NH3 volatilization from alkaline soil and simultaneously improving the utilization of fertilizer N by sweet sorghum.

关键词： Alkaline soil Ammonia volatilization Trichoderma viride biofertilizer Functional gene Microbial community

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