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Pressure field characteristics of petroliferous sags in Bohai Bay Basin: Implication for hydrocarbon enrichment

Petroleum Research 2017年第3期2卷 199-208页

作者： Youlu Jiang Xin Wang Qianqian Yu Yongshi Wang Hua Liu Chen Jing School of Geosciences China University of PetroleumShandong 266580China Sinopec shengli oilfield Company Shandong 257015China

Pressure fields of different sags in a petroliferous basin were significantly different,and it was related to hydrocarbon *** on pressure data of different sags in Bohai Bay Basin,types of pressure field and its distribution characteristics were well discussed,and relationships between overpressure and hydrocarbon generation,pressure field and hydrocarbon enrichment were also *** showed that the Paleogene pressure fields of different sags in Bohai Bay Basin could be divided into three types:normal pressure type,single overpressure type and double overpressure *** three types of pressure fields had the zoned features in their *** normal pressure fields were mostly distributed in peripheral sags of the basin,while the single overpressure fields were widespread in the basin,and the double overpressure fields were concentrated in the areas around the Bohai *** generation had a significant effect on overpressure formation,thus overpressure horizons generally were corresponded to major source rock horizons,and differences of filling evolution history and main hydrocarbon-generation strata of different sags might be important factors for the formation of these three types of pressure *** in source rock horizons was closely related to hydrocarbon ***,hydrocarbons were mainly distributed around the overpressure center,and the secondary migration distance of hydrocarbons was affected by the degree of ***,hydrocarbon distributionwas controlled by the type of pressure *** in the normal pressure sags were mainly enriched in the major hydrocarbon-generation horizons and their adjacent horizons,hydrocarbons in the single overpressure sags were mainly distributed in the hydrocarbon-generation horizons and its upper and lower horizons,while in the double overpressure sags,the hydrocarbon enrichment degree in Neogene was *** enrichment in

关键词： Overpressure Hydrostatic pressure Pressure field Hydrocarbon generation Hydrocarbon enrichment Sag Bohai bay basin

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PETROLEUM GEOLOGY AND RECOVERY EFFICIENCY

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油气地质与采收率 2014年第2期21卷 I0001-I0008页

作者： Wang Duanping shengli oilfield Company SINOPEC Dongying City Shandong Province 257001 China

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Longitudinal Changes in Liver Aminotransferases Predict Metabolic Syndrome in Chinese Patients with Nonviral Hepatitis

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Biomedical and Environmental Sciences 2016年第4期29卷 254-266页

作者： CHEN Qi Cai XIAO Juan ZHANG Peng Peng CHEN Li Li CHEN Xiao Xiao WANG Shu Mei Department of Prevention and Health Care Dongying Shengli Oilfield Central Hospital Dongying 257000 Shandong China Department of Epidemiology School of Public Health Shandong University Jinan 250012 Shandong China Tianjin Entry-Exit inspection and Quarantine Bureau Tianjin 300000 China Department of Nutrition and Food Safety Zhejiang Center for Disease Control and Prevention Hangzhou 310051 Zhejiang China

Objective This study explored the correlation of longitudinal changes in serum alanine aminotransferase （ALT） and aspartate aminotransferase （AST） levels with the incidence of metabolic syndrome （Mets） based on a dynamic health examination cohort. Methods A Mets-free dynamic cohort involving 4541 participants who underwent at least three health examinations from 2006 to 2011 was included in the study. Mets was defined according to the Chinese Medical Association Diabetes Branch definition that included hypertension, obesity, hyperlipidemia, and hyperglycemia. Generalized estimating equation （GEE） model was used to analyze multivariate relative risk （RR） of repeated observations of ALT and AST in quartiles for Mets or its components according to gender. Results In all, 826 Mets cases were reported. Adjustment of relevant parameters indicated that time-varying changes in ALT and AST levels were positively associated with the incidence of Mets in a dose-response manner. Positive association between high ALT levels and fatty liver was much stronger than that between high AST levels and fatty liver, particularly in male participants. These associations were consistently observed in the following subgroups： participants with ALT and AST levels of 〈40 U/L, participants with of 〈25 kg/m2, and participants with non-fatty liver. Furthermore, participants with 2 Mets components at baseline showed lower multivariate adjusted RRs of ALT and AST for Mets than participants with 0-1 Mets component. Conclusion These results suggested that elevated serum ALT and AST levels were early biomarkers of Mets or its components.

关键词： Alanine aminotransferase Aspartate aminotransferase Metabolic syndrome Dynamic cohortstudy Generalized estimating equation model

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Characteristics and Genetic Mechanisms of Overpressure in the Depressions of Bohai Bay Basin, China

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Acta Geologica Sinica(English Edition) 2016年第6期90卷 2216-2228页

作者： LIU Hua JING Chen JIANG Youlu SONG Guoqi YU Qianqian FENG Yuelin China University of Petroleum (East China) Qingdao 266580 Shandong China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and Technology Qingdao 266071 Shandong China SINOPEC shengli oilfield Company Dongying 257000 Shandong China CNPC Huabei oilfield Company Renqiu 062552 Hebei China

The distribution and genetic mechanisms of abnormal pressures in the Bohai Bay Basin were systematically analyzed. Abnormal pressures are widely developed in the Bohai Bay Basin, primarily in the Paleogene E2s4, E2s3, Es1, and Ed formations. From the onshore area of the Bohai Bay Basin to the center of the Bozhong area, the top depth of the overpressured zone in each depression increases gradually, the overpressured strata in each depression gradually move to younger formations, and the pressure structure successively alters from single-bottom- overpressure to double-bottom-overpressure and finally to double-top-overpressure. The distribution of overpressured area is consistent with the sedimentary migration controlled by the tectonic evolution of the Bohai Bay Basin, which is closely related to the hydrocarbon-generation capability of active source rocks. The overpressured strata are consistent with the source-rock intervals in each depression; the top of the overpressured zone is synchronous with the hydrocarbon generation threshold in each depression; the hydrocarbon generation capability is positively correlated with the overpressure magnitude in each formation. Undercompaction was the main mechanism of overpressure for depressions with fluid pressure coefficients less than 1.2, whereas hydrocarbon generation was the main mechanism for depressions with fluid pressure coefficients greater than 1.5.

关键词： abnormal fluid pressure pressure structure overpressure mechanism Bohai Bay Basin

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Nonlinear system identification using deep belief network based on PLSR

Nonlinear system identification using deep belief network ba...

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第36届中国控制会议

作者： Wang Gongming Li Wenjing Qiao Junfei Wu Guandi Faculty of Information technology Beijing University of Technology Beijing Key Laboratory of Computational Intelligence and Intelligent System Technical Test center of shengli oilfield Branch Sinopec

ISBN: (纸本)9781538629185

Deep learning has been successfully applied into pattern recognition due to its deep architecture and effective unsupervised learning,and deep belief network（DBN） is a popular model based on deep learning *** this paper,a DBN identification model based on partial least square regression（PLSR）,named PLSR-DBN,is proposed for nonlinear system *** order to improve the identification accuracy,PLSR is introduced into the supervised fine-tuning of DBN to elimate the overfitting and local minimum resulted from gradients-based learning,and contrastive divergence（CD） algorithm is used in unsupervised ***,the proposed PLSR-DBN is tested on a benchmark nonlinear *** experiment results show that the proposed PLSR-DBN has a better performance on nonlinear system identification than other similar methods.

关键词： Deep learning Deep belief network Nonliear system identification fine-tuning Partial least square regression

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New design method of unequal taper thread(UTT)pairs and its application in API NC38 thread improvement

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Petroleum 2023年第3期9卷 439-453页

作者： Hangming Liu Yangye He Jifang Wan Lin Chen Xianzhong Yi Song Hou Yanbin Wang Dongxu He Gang Li Cooperative Innovation center of Unconventional Oil and Gas Yangtze University(Ministry of Education&Hubei Province)Wuhan430100China School of Mechanical Engineering Yangtze UniversityJingzhou434023China College of Safety and Ocean Engineering China University of Petroleum-BeijingBeijing102249China CNPC Engineering technology R&D Company Limited Beijing102206China Changqing Drilling Company of CNPC Chuanqing Drilling Engineering Company Limited Xi'an710018China MOE Key Laboratory of Petroleum Engineering China University of Petroleum-BeijingBeijing102249China shengli oilfield Company SINOPECDongying257051China

API standard threads are the most commonly used thread configurations for drill pipe joints in the petroleum *** with the increasing application of horizontal wells and extended-reach wells in drilling engineering,drill pipe joint threads are subjected to complex loads,and drill pipe joint thread breakage accidents occur *** API NC38 threaded pair used in the SU36-8-4H2 well suffered a fracture *** analysis found that the fracture sites were located near the root of the first engagement pin-thread where the stress was ***,it is necessary to find an alternative method to reduce the largest stress of NC38 ***,a new design method of unequal taper thread(UTT)pairs is proposed that the taper of pin thread,slightly smaller than the taper of matched-box thread,is not equal to one of *** the UTT pairs of API NC38 thread,the taper of box thread is kept as the standard taper of 1:6,but the taper of pin thread is,respectively,1:6.1(UTT-I),1:6.2(UTT-Ⅱ),1:6.3(UTT-Ⅲ)and 1:6.4(UTT-IV).The 3D finite element models of four UTT pairs and one standard pair based on NC38 thread were developed,and the mechanical properties of five thread pairs bearing such typical working loads as torque,axial compression,axial tension,bending moment,internal and external pressure,were *** results show that four UTT pairs are superior to the standard pair of API NC38,and UTT-Ⅲ has the most performance in all of four UTT *** with the standard pair of API NC38,UTT-Ⅲ pair can improve the bearing capacity such as torsion strength,compression strength,tensile strength,bending strength,strength against internal and external pressure,by 24.8%,13.2%,22%,9.99%and 14.2%,*** new design method of UTT pair enhances the bearing capacity of API NC38 thread,and has been applied in Changqing Drilling Company of CNPC Chuanqing Drilling Engineering Company *** UTT-thread pair method is not only applicable f

关键词： Unequal taper thread pairs NC38 thread improvement Rotary shouldered connection thread Failure analysis Drill pipe joint

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Study and Commercial Test on technology for Deacidification of Distillate Oils

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China Petroleum Processing & Petrochemical technology 2005年第3期7卷 19-25页

作者： Tang Xiaodong An Rong Cui Yingxian Du Hongyong State Key Laboratory. of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum Institute Chengdu 610500 SINOPEC shengli technology inspection center College of Chemistry and Chemical Engineering Southwest Petroleum Institute

A new kind of solvent for deacidification of distillate oils was introduced in this paper. After successful laboratory study this technology had been applied in commercial scale successfully. Compared to traditional caustic wash of distillate oils, this technology has a lot of merits, such as the broad range of distillates to be processed, low caustic consumption, recycle of deacidifying agent, absence of waste caustic discharge, and low equipment revamp expenses, which can have promising perspectives for exploitation and application of this technology.

关键词：脱氧作用精油加工脱酸剂工艺技术石油炼制

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Sedimentation in a Continental High-Frequency Oscillatory Lake in an Arid Climatic Background:A Case Study of the Lower Eocene in the Dongying Depression,China

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Journal of Earth Science 2017年第4期28卷 628-644页

作者： Jie Liu Jian Wang Yingchang Cao Guoqi Song Research center of Geological Resources and Geological Engineering China University of Petroleum(East China)Qingdao 266580China School of Geosciences China University of Petroleum(East China)Qingdao 266580China SINOPEC shengli oilfield Company Dongying 257015China

The sedimentary environment, formation conditions, sedimentary characteristics and the basin evolution model of high-frequency oscillatory lake in arid climatic background of the Lower Eocene in the Dongying depression were studied through the analysis of drilling cores, sporepollen, geochemistry and geophysics data. During the sedimentary period of the Eocene Ek^3-Es^4x formations, because of the frequent alternation between dry and wet climates in the arid climatic background and the gentle paleo- geomorphology, the lake level and salinity of the Early Eocene Dongying depression frequently and rap- idly increased and decreased, which is referred to as a high-frequency oscillatory lake. The sedimentation and distribution of sediments in this high-frequency oscillatory lake basin were controlled by the fre- quently alternating dry-wet climates. During periods with relatively wet climate, the seasonal floods and unstable rivers led to the formation of over-flooding lake deltas in the gentle slope belt, and fine-grained clastic sediments, with minor thin layers of gypsum-salt rocks in the sag belt. During the relatively arid climatic periods, sedimentation occurred mainly in the limited area of the sag belt with thick gypsum-salt rocks. Because of the impact of the salinity stratification of the lake water, these gypsum-salt rocks exhibit annular structural features. A sedimentary cycle of the oscillatory lake began with isochronous flood channels and ended with relatively thick gypsum rocks and salt rocks. The thickness of one oscillatory cy- cle is generally 4-20 m. The superposition of multiple sedimentary cycles of the oscillatory lake constitutes the overall vertical idling sequence of the high-frequency oscillatory lake basin.

关键词： oscillatory lake clastic sedimentation chemical sedimentation paleocfimate Dongyingdepression Lower Eocene.

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Study on the base-level cycle and the sedimentology of Permian in Jiyang area

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Journal of Coal Science & Engineering(China) 2009年第1期15卷 7-15页

作者： LI Zeng-xue HAN Mei-lian SONG Ming-shui LU Da-wei Academe of Geoscience Shandong University of Science and Technology Qingdao 266510 China Research center of Petroleum and Gas Exploration and Exploitation Techniques of Shandong Qingdao 266510 China shengli oilfield Co.Ltd Sinopec Dongying 257015 China

The identification of sequence boundaries is the key point for sequence *** the higher-order sequences and the units within the sequencesare bounded with the key sediments or isochronous *** sequences can be dividedin the whole Permo-Carboniferous strata (the Shiqianfeng Formation is not included)which is from the Benxi Formation,Taiyuan Formation,Shanxi Formation,Xiashihezi Formation,Wanshan Section,and Kuishan Section to the Xiaofuhe ***,differentsystem tracts (lowstand system tract,transgression system tract and highstand systemtract) and some parasequences can be recognized in each *** was on the basis of the division of the base-level *** base-level cycle wasmainly identified according to the change of the water area,which was reflected by thedepositional *** physical characteristic of the strata was reflected by the *** was supplied by the test of the minerals and rocks and the analysis of the microelementin the *** paleogeographic characteristic of the lowstand system tract in thesequence Ⅵ is that the east-north part takes the river system as its feature;the south partis the lake system,the river channel spreads from north to south,and the area of theflooding plain is *** paleogeographic characteristic of the water-transgressive systemtract is that the range of the lake in the south extended distinctively,the range of theriver channel in the east *** coastal shallow lake deposit is the main characteristicin the water-transgressive system *** paleogeographic characteristic of thehighstand system tract is similar to the one of the lowstand system tract.

关键词：基准面旋回石炭二叠系济阳地区沉积学 DNA序列古地理特征层序地层划分体系域

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Lithology Classification Based on Set-Valued Identification Method

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Journal of Systems Science & Complexity 2022年第5期35卷 1637-1652页

作者： LI Jing WU Lifang LU Wenjun WANG Ting KANG Yu FENG Deyong ZHOU Hansheng Department of Automation University of Science and Technology of ChinaHefei 230027China Key Laboratory of Systems and Control Institute of Systems ScienceAcademy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100190China Institute of Artificial Intelligence University of Science and Technology BeijingBeijing 100083China shengli Geophysical Research Institute SINOPEC GroupDongying 257022China Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefei 230088China

Lithology classification using well logs plays a key role in reservoir *** paper studies the problem of lithology identification based on the set-valued method(SV),which uses the SV model to establish the relation between logging data and lithologic types at a certain depth *** particular,the system model is built on the assumption that the noise between logging data and lithologic types is normally distributed,and then the system parameters are estimated by SV method based on the existing identification *** logging data of shengli oilfield in Jiyang Depression are used to verify the effectiveness of SV *** results indicate that the SV model classifies lithology more accurately than the Logistic Regression model(LR)and more stably than uninterpretable models on imbalanced ***,the Macro-F1 of the SV models(i.e.,SV(3),SV(5),and SV(7))are higher than 85%,where the sandstone samples account for only 22%.In addition,the SV(7)lithology identification system achieves the best stability,which is of great practical significance to reservoir exploration.

关键词： DT lithology classification LR RF set-valued model SVM

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