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Simultaneous acquisition of 3D surface seismic and 3D VSP data-processing and integration

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Simultaneous acquisition of 3D surface seismic and 3D VSP da...

Thermal maturity evaluation using Raman spectroscopy for oil shale samples of USA:comparisons with vitrinite reflectance and pyrolysis methods

CPS/SEG 2004 International Geophysical Conference

作者： Satinder Chopra Vasudhaven Sudhakar core laboratories reservoir technologies division Calgary core laboratories reservoir technologies division Calgary

＜正＞ INTRODUCTIONThe first 3D vertical seismic profile （VSP） acquisition was attempted in 1986 by AGIP;several 3D VSP volumes have been acquired since then. Apart from the 3D VSP acquisition, a simultaneous VSP and 3D surface seismic acquisition has been attempted, and the results have been encouraging in terms of cost effectiveness and the enhanced imaging of the *** work is an attempt to describe the simultaneous acquisition of 3D surface seismic data, the 3D VSP data and to detail the different steps that were

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Petroleum Science 2020年第3期17卷 567-581页

作者： MdGolam Kibria Souvik Das Qin-Hong Hu Asish R.Basu Wen-Xuan Hu Subhadip Mandal Department of Earth and Environmental Sciences The University of Texas at Arlington500 Yates StreetArlingtonTX 76019USA Institute of Energy Sciences Nanjing UniversityNanjing 210093China Integrated Reservoir Solutions Core LaboratoriesHoustonTX 77040USA

Thermal maturity is commonly assessed by various geochemical screening methods(e.g.,pyrolysis and organic petrology).In this contribution,we attempt to establish an alternative approach to estimating thermal maturity with Raman spectroscopy,using 24 North American oil shale samples with thermal maturity data generated by vitrinite reflectance(VRo%)and pyrolysis(Tmax)-based maturity calculation(VRe%).The representative shale samples are from the Haynesville(East Texas),Woodford(West Texas),Eagle Ford and Pearsall(South Texas)Formations,as well as Gothic,Mancos,and Niobrara Formation shales(all from Colorado).The Raman spectra of disordered carbonaceous matter(D1 and G bands separation)of these samples were directly obtained from the rock chips without prior sample *** the Gaussian and Lorentzian distribution approach,thermal maturities from VR were correlated with carbon G and *** found that the Raman band separation(RBS)displayed a better correlation for equivalent VRe%than vitrinite reflectance VRo%.The RBS(D1–G)distance versus total organic carbon,free hydrocarbons from thermal extraction(S1),and the remaining hydrocarbon generating potential(S2)indicate that the RBS(D1–G)distance is also related to kerogen *** presented here from three methods of maturity determination of shale demonstrate that Raman spectroscopy is a quick and valid approach to thermal maturity assessment.

关键词： US shale Raman spectroscopy Vitrinite reflectance Thermal maturity

Trajectory sampling and finite-size effects in first-principles stopping power calculations

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npj Computational Materials 2023年第1期9卷 238-246页

作者： Alina Kononov Thomas W.Hentschel Stephanie B.Hansen Andrew D.Baczewski Center for Computing Research Sandia National LaboratoriesAlbuquerqueNMUSA School of Applied&Engineering Physics Cornell UniversityIthacaNYUSA Pulsed Power Sciences Center Sandia National LaboratoriesAlbuquerqueNMUSA

Real-time time-dependent density functional theory(TDDFT)is presently the most accurate available method for computing electronic stopping powers from first ***,obtaining application-relevant results often involves either costly averages over multiple calculations or ad hoc selection of a representative ion *** consider a broadly applicable,quantitative metric for evaluating and optimizing trajectories in this *** methodology enables rigorous analysis of the failure modes of various common trajectory choices in crystalline *** randomly selecting trajectories is common practice in stopping power calculations in solids,we show that nearly 30%of random trajectories in an FCC aluminum crystal will not representatively sample the material over the time and length scales feasibly simulated with TDDFT,and unrepresentative choices incur errors of up to 60%.We also show that finite-size effects depend on ion trajectory via“ouroboros”effects beyond the prevailing plasmon-based interpretation,and we propose a cost-reducing scheme to obtain converged results even when expensive core-electron contributions preclude large *** work helps to mitigate poorly controlled approximations in first-principles stopping power calculations,allowing 1–2 order of magnitude cost reductions for obtaining representatively averaged and converged results.

关键词： size prevailing selecting

Maceral evolution of lacustrine shale and its effects on the development of organic pores during low mature to high mature stage:A case study from the Qingshankou Formation in northern Songliao Basin,northeast China

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Petroleum Science 2023年第5期20卷 2709-2725页

作者： Liu Wang Bo Liu Long-Hui Bai Mehdi Ostadhassan Thomas Gentzis Bo-Yang Wang Yi-Zhang Wang Key Laboratory of Continental Shale Hydrocarbon Accumulation and Efficient Development Ministry of EducationNortheast Petroleum UniversityDaqingHeilongjiang163318China Accumulation and Development of Unconventional Oil and Gas State Key Laboratory Cultivation BaseNortheast Petroleum UniversityDaqingHeilongjiang163318China core laboratories Reservoir Geology Group6316 Windfern RoadHoustonTX77040USA Exploration and Development Research Institute of Daqing Oilfield Co Ltd DaqingHeilongjiang163712China

Organic matter(OM)hosted pores are crucial for the storage and migration of petroleum in shale *** maturity and macerals type are important factors controlling the development of pores *** this study,six lacustrine shale samples with different thermal maturities from the first member of the Qingshankou Formation in the Songliao Basin,of which vitrinite reflectance(R_(o))ranging from 0.58% to 1.43%,were selected for a comparative *** electron microscopy(SEM)and reflected light microscopy were combined to investigate the development of organic pores in different macerals during thermal *** results show that alginite and liptodetrinite are the dominant primary macerals,followed by *** a few primary organic pores developed in the alginite at the lowest maturity(R_(o)=0.58%).As a result of petroleum generation,oil-prone macerals began to transform to initial-oil solid bitumen at the early oil window(R_(o)=0.73%)and shrinkage cracks were ***-oil solid bitumen cracked to oil,gas and post-oil bitumen by primary cracking(R_(o)=0.98%).Moreover,solid bitumen(SB)was found to be the dominant OM when R_(o)>0.98%,which indicates that SB is the product of oil-prone macerals *** secondary bubble pores were observed on SB,which formed by gas release,while devolatilization cracks developed on migrated ***,at the late oil window(Ro?1.16%),migrated SB filled the interparticle pore *** further increase in temperature,the liquid oil underwent secondary cracking into pyrobitumen and gas,and spongy pores developed on the pyrobitumen at higher levels of maturity(Ro=1.43%),which formed when pyrobitumen cracked into *** and inertinite are stable without any visible pores over the range of maturities,verifying their low petroleum generation *** addition,it was concluded that clay minerals could have a catalytic effect on the petroleum generation,which may explain why or

关键词： Lacustrine shale Maceral evolution Organic pores Scanning electron microscopy Reflected light microscopy

A Convenient Synthetic Method of Metal Dendritic Porphyrins

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Chinese Chemical Letters 2006年第8期17卷 999-1001页

作者： Wen Bin CUI Jie ZHOU Lei CHEN Xiao Bin DENG Chun GUO School of Pharmaceutical Engineering Shenyang Pharmaceutical University Shenyang 110016 Shenzhen Sinova laboratories Shenzhen 518057

A convenient synthetic method of metal dendritic porphyrins through the convergent synthetic strategy is described. The porphyrin core were linked with the synthetic fragments by forming ether or ester bonds to give f... 详细信息

关键词： Synthesis metal dendritic porphyrin.

Proposal and Evaluation of Security Schemes for Software-Defined Radio

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Proposal and Evaluation of Security Schemes for Software-Def...

Geochemical Analysis on Educts in the Drainage Corridor of a Big Dam over Yangtze River

IEEE第14届国际个人无线移动通信大会

作者： Hiroyuki Shiba Kazuhiro Uehara Katsuhiko Araki NTT Network Innovation laboratories NTT Corporation Yokosuka-shi Japan NTT Science and core Technology Laboratory Group NTTCorporationAtsugi-shi Japan NTT Network Innovation laboratories NTT Corporation Yokosuka-shi Japan

the functions of software-defined radio (SDR)can be changed by changing its software. Therefore, manysecurity problems that have never been seen in theconventional fixed wireless terminals will arise.

关键词： software-defined radio security architecture digitalsignature public key encryption

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Journal of Earth Science 2012年第2期23卷 180-186页

作者：李静梁杏毛绪美彭红明 School of Environmental Studies China University of Geosciences State Key laboratories of Biogeology and Environmental Geology China University of Geosciences

The analysis of educts has become an important aspect for the security evaluation of hy-draulic construction. Brown, white-based colloidal educts appeared in the left drainage corridors of the dam over the Yangtze River after its 5-year operation, which did not happen in the initial investigation. In this article, the physics characteristics of the educts were affirmed, and the analysis results of the major and trace elements among educts and the corresponding location of water samples, core samples, indicate that educts are the products from the chemical potential erosion of the dam foundation rock. Brown educts are uncertainties Fe and Mn-based materials, mainly derived from the corrosion of the chlorite and biotite, which may be caused by the changes of the oxidizing condition. White educts mainly with Si and Ca are derived from the corrosion of the calcite, feldspar, and partly invalidation of foundation curtain. Additionally, similarities of the chondrite normalized rare earth element （REE） patterns between educts and bedrock further illustrate homologous, and Ce and Eu anomalies relative to chondrite reflect changes of the water environment condition.

关键词： educt water-rock interaction geochemistry drainage corridor REE.

Streamlined human antibody generation and optimization by exploiting designed immunoglobulin loci in a B cell line

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Cellular & Molecular Immunology 2021年第6期18卷 1545-1561页

作者： Hidetaka Seo Hitomi Masuda Kenjiro Asagoshi Tomoaki Uchiki Shigehisa Kawata Goh Sasaki Takashi Yabuki Shunsuke Miyai Naoki Takahashi Shu-ichi Hashimoto Atsushi Sawada Aki Takaiwa Chika Koyama Kanako Tamai Kohei Kurosawa Ke-Yi Lin Kunihiro Ohta Yukoh Nakazaki Department of Life Sciences Graduate School of Arts and SciencesThe University of TokyoTokyoJapan Research laboratories Chiome Bioscience IncTokyoJapan

Monoclonal antibodies(mAbs)are widely utilized as therapeutic drugs for various diseases,such as cancer,autoimmune diseases,and infectious *** the avian-derived B cell line DT40,we previously developed an antibody display technology,namely,the ADLib system,which rapidly generates antigen-specific ***,we report the development of a human version of the ADLib system and showcase the streamlined generation and optimization of functional human *** libraries were first constructed by replacing endogenous immunoglobulin genes with designed human *** these libraries,clones producing full-length human IgGs against distinct antigens can be isolated,as exemplified by the selection of antagonistic *** advantage of avian biology,effective affinity maturation was achieved in a straightforward manner by seamless diversification of the parental clones into secondary libraries followed by single-cell sorting,quickly affording mAbs with improved affinities and ***,we demonstrate that the human ADLib system could serve as an integrative platform with unique diversity for rapid de novo generation and optimization of therapeutic or diagnostic antibody ***,our results suggest that libraries can be constructed by introducing exogenous genes into DT40 cells,indicating that the ADLib system has the potential to be applied for the rapid and effective directed evolution and optimization of proteins in various fields beyond biomedicine.

关键词： Immunoglobulin rearrangements homologous recombination antibody therapeutics antibody engineering drug discovery

An E-band CMOS frequency quadrupler with 1.7-dBm output power and 45-dB fundamental suppression

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Journal of Semiconductors 2022年第9期43卷 46-52页

作者： Xiaofei Liao Dixian Zhao Xiaohu You National Mobile Communication Research Laboratory Southeast UniversityNanjing 211189China Purple Mountain laboratories Nanjing 211111China

This paper presents an E-band frequency quadrupler in 40-nm CMOS *** circuit employs two push-push frequency doublers and two single-stage neutralized *** pseudo-differential class-B biased cascode topo-logy is adopted for the frequency doubler,which improves the reverse isolation and the conversion *** tech-nique is applied to increase the stability and the power gain of the amplifiers *** stacked transformers are used for single-ended-to-differential transformation as well as output bandpass *** output bandpass filter enhances the 4th-harmonic output power,while rejecting the undesired harmonics,especially the 2nd *** core chip is 0.23 mm^(2)in size and consumes 34 *** measured 4th harmonic achieves a maximum output power of 1.7 dBm with a peak conversion gain of 3.4 dB at 76 *** fundamental and 2nd-harmonic suppressions of over 45 and 20 dB are achieved for the spectrum from 74 to 82 GHz,respectively.

关键词： capacitor neutralization CMOS E-band frequency doubler frequency quadrupler push-push