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Petroleum 2020年第3期6卷 304-310页

作者： Ghasem Zargar Abbas Ayatizadeh Tanha Amirhossein Parizad Mehdi Amouri Hasan Bagheri Petroleum University of Technology Iran National Iranian Drilling company Well Logging DepartmentAhwazIran Petro Gostaran Ofogh(PGO) Mud Logging DepartmentAhwazIran

This work highlights the application of Artificial Neural Networks optimized by Cuckoo optimization algorithm for predictions of NMR log parameters including porosity and permeability by using field log *** NMR logging data have some highly vital privileges over conventional *** measured porosity is independent from bearer pore fluid and is effective porosity not ***,the permeability achieved by exact measurement and calculation considering clay content and pore fluid *** availability of the NMR data brings a great leverage in understanding the reservoir properties and also perfectly modelling the ***,achieving NMR logging data by a model fed by a far inferior and less costly conventional logging data is a great *** input parameters of model were neutron porosity(NPHI),sonic transit time(DT),bulk density(RHOB)and electrical resistivity(RT).The outputs of model were also permeability and porosity *** structure developed model was build and trained by using train *** and statistical validation of results showed that the developed model is effective in prediction of field NMR log *** show great possibility of using conventional logging data be used in order to reach the precious NMR logging data without any unnecessary costly tests for a ***,the considerable accuracy of newly ANN-Cuckoo method also *** study can be an illuminator in areas of reservoir engineering and modelling studies were presence of accurate data must be essential.

关键词： Neural network ANN-Cuckoo NMR logging Permeability modeling Porosity modeling

Study of real-time LWD data visual interpretation and geo-steering technology

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Petroleum Science 2013年第4期10卷 477-485页

作者： Shao Cairui Zhang Fuming Chen Guoxing Ji Jiaqi Hou Qinggong Tang Jianhong Cao Xianjun School of Geosciences China University of Petroleum CNPC West Drilling and logging company SINOPEC Shengli Well logging company

LWD（logging while drilling） data has been used to explore complex subtle reservoirs by realtime visual interpretation and *** method comprises of computer communication,well log data processing,formation recognition,reservoir modeling and model updating in real *** studied the key technologies related to real-time LWD data visual interpretation and geo-steering and developed computer software with Chinese intellectual property rights covering the following important aspects： 1） real-time computer communication of well site LWD data;2） visualization of geological model and borehole information;3） real-time interpretation of LWD data;4） real-time geological model updating and geo-steering *** use field application examples to demonstrate the feasibility and validity of the proposed technologies.

关键词： LWD(logging while drilling) real-time visualization interpretation geo-steering

Petroleum geological features and hydrocarbon enrichment of Linhe Depression in Hetao Basin, NW China

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Petroleum Exploration and Development 2023年第4期50卷 798-811页

作者： ZHANG Ruifeng HE Haiqing ZHU Qingzhong CHEN Shuguang LIU Xiheng DAN Weining HU Yanxu SHI Yulei ZHANG Yufei YU Haijun ZHANG Ximeng PetroChina Huabei Oilfield company Renqiu 062552China PetroChina Oil&Gas and New Energy company Beijing 100007China logging Technology Research Institute of CNPC logging company Beijing 100007China no.2 mud logging company CNPC Bohai Drilling Engineering Company LimitedRenqiu 062552China

Based on paleogeomorphology, drilling and seismic data, this paper systematically studies the structural and sedimentary evolution, source rock characteristics, reservoir characteristics and formation mechanism, hydrocarbon accumulation model and enrichment law in the Linhe Depression of the Hetao Basin, NW China. The Hetao Basin mainly experienced three stages of evolution, namely, weak extensional fault depression, strong extensional fault depression and strike-slip transformation, giving rise to four positive structural belts(Jilantai, Shabu, Nalinhu and Xinglong), which are favorable areas for oil and gas accumulation. The two main saline lacustrine source rocks, Lower Cretaceous Guyang Formation and Oligocene Linhe Formation, are characterized by high sulfur content, rich algae, early maturity, early expulsion, and wide oil generation window. The large structural transition belt in the intermountain area around the Hetao Basin controls the formation of large-scale braided river delta deposits, which are characterized by high quartz content(50%-76%), long-term shallow burial and weak compaction, low cement content, and good reservoir properties in delta front sandbody. The burial depth of the effective Paleogene reservoirs is predicted to reach 8000 m. Three hydrocarbon accumulation models, nose-uplift near sag, buried hill surrounding sag, fault nose near source rock, are constructed. The law of hydrocarbon accumulation in the Linhe Depression is finally clarified as follows: near-source around the depression is the foundation, high-quality thick reservoir is the premise, good tectonic setting and trap conditions are the key.

关键词： Hetao Basin Linhe Depression Cretaceous Guyang Formation Paleogene Linhe Formation Jilantai Oilfield Bayan Oilfield hydrocarbon enrichment law

Fluid property identification of the Lower Cretaceous reservoirs with complex oil-water contacts in Deseo Basin,Chad

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Energy Geoscience 2024年第1期5卷 89-98页

作者： Xinxin Zhang Lianfeng Zhu Tianjiao Wang Xiaokang Shi Bo Han Jian Shen Hailei Gao mud logging company Great Wall Drilling Company Ltd.CNPCLiaoningPanjin124010China CNPC Latin America Ltd. Beijing100034China CNPC Andes(Ecuador)Ltd. Beijing100034China

Recently,exploration breakthroughs have been made in the Lower Cretaceous sandstone reservoirs in the Doseo Basin,but the identification of reservoir fluid property is difficult due to variable reservoir lithology,complex oil-water contact within and faint responses of the oil zone,which causes the lower accuracy of reservoir fluid property identification with conventional mudlogging and wirelogging *** the geochemical logging,fluorescent logging,mud logging and cutting logging technology,in combination with formation test data,this paper distinguishes the crude oil types,analyzes the logging response characteristics of oil zone after water washing,and establishes the interpretation charts and parameter standards for reservoir fluid *** crude oil can be divided into two types,namely viscous-heavy and thin-light,based on total hydrocarbon content and component concentration tested by mud logging,features of pyrolysis gas chromatogram and fluorescence *** general characteristics of oil layers experienced water washing include the decrease of total hydrocarbon content and component concentration from mud logging,the decrease of S1 and PS values from geochemical logging,the decrease of hydrocarbon abundance and absence of some light components in pyrolysis gas chromatogram,and the decrease of fluorescence area and intensity from fluorescence *** to crude oil types,the cross plots of S1 versus peak-baseline ratio,and the cross plots of rock wettability versus fluorescence area ratio are drawn and used to interpret reservoir fluid ***,the standards of reservoir fluid parameter are established combining with the parameters of PS and the parameters in above charts,and comprehensive multiparameter correlation in both vertical and horizontal ways is also performed to interpret reservoir fluid *** application in the Doseo Basin achieved great success,improving interpretation ability of fluid property

关键词： Doseo Basin Reservoir interpretation Oil-water contact Fluid property Crude oil type

Architectural Model of a Dryland Gravel Braided River,based on 3D UAV Oblique Photogrammetric Data:A Case Study of West Dalongkou River in Eastern Xinjiang,China

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Acta Geologica Sinica(English Edition) 2023年第1期97卷 269-285页

作者： YIN Senlin ZHU Baiyu GUO Haiping XU Zhenhua LI Xiaoshan WU Xiaojun CHEN Yukun JIANG Zhibin Institute of mud-logging Technology and Engineering Yangtze UniversityJingzhouHubei 434023China Research Institute of Exploration and Development PetroChina Xinjiang Oilfield CompanyKaramayXinjiang 834000China School of GeoSciences Yangtze UniversityWuhan 430100China

Three-dimensional unmanned aerial vehicle(UAV)oblique photogrammetric data were used to infer mountainous gravel braided river lithofacies,lithofacies associations and architectural *** architecture and lithofacies associations with detailed lithofacies characterizations were comprehensively described to document the architectural model,architectural element scale and gravel particle scale.(1)Nine lithofacies(i.e.,Gmm,Gcm,Gcc,Gci,Gcl,Ss,Sm,Fsm and Fl)were identified and classified as gravel,sand and fine matrix *** are typical depositional features of a mountainous dryland gravel-braided river.(2)Three architectural elements were identified,including channel(CH),gravel bar(GB)and overbank(OB).CH can be further divided into flow channel and abandoned channel,while GB consists of Central Gravel bar(CGB)and Margin Gravel bar(MGB).(3)The gravel bar is the key architectural element of the gravel braided river,with its geological *** dimensions of GBs and their particles are various,but exhibit good relationships with each *** grain size of GB decreases downstream,but the dimensions of GB do *** bank erosion affects the GB dimensions,whereas channel incision and water flow velocity influence the grain size of *** conclusions can be applied to the dryland gravel braided river studies in tectonically active areas.

关键词： three-dimensional UAV oblique photogrammetry gravel braided river architecture modern deposits West Dalongkou River

Reservoir architecture patterns of sandy gravel braided distributary channel A case study of Triassic Upper Karamay Formation,Xinjiang oilfield

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Petroleum 2016年第2期2卷 117-129页

作者： Senlin Yin Zhangming Hu Xiang Ren Xiaojun Wu Yanhui Chen Lijun Zheng Zhibin Jiang Institute of mud logging Technology and Engineering Yangtze UniversityJingzhouHubei434023China Western Drilling Engineering company of PetroChina Karamay 834000China Research Institute of Exploration and Development Xinjiang Oilfield CompanyKaramay 834000XinjiangChina

The purpose of this study was to discuss shape,scale and superimposed types of sandy gravel bodies in sandy-gravel braided distributary *** analysis,hierarchy bounding surface analysis and subsurface dense well pattern combining with outcrops method were used to examine reservoir architecture patterns of sandy gravel braided distributary channel based on cores,well logging,and outcrops data,and the reservoir architecture patterns of sandy gravel braided distributary channels in different grades have been *** study shows:(1)The main reservoir architecture elements for sandy gravel braided channel delta are distributary channel and overbank sand,while reservoir flow barrier elements are interchannel and lacustrine mudstone.(2)The compound sand bodies in the sandy gravel braided delta distributary channel take on three shapes:sheet-like distributary channel sand body,interweave strip distributary channel sand body,single strip distributary channel sand body.(3)Identification marks of single distributary channel include:elevation of sand body top,lateral overlaying,“thick-thin-thick”feature of sand bodies,interchannel mudstone and overbank sand between distributary channels and the differences in well log curve shape of sand bodies.(4)Nine lithofacies types were distinguished in distributary channel unit interior,different channel units have different lithofacies association sequence.

关键词： Distributary channel Gravel braided channel delta Reservoir architecture 31st section of Pinglianggou Block Yizhong

Resistivity Logs of the Chinese Continental Scientific Drilling Main Hole:Implication for the Crustal Electrical Structure of Dabie-Sulu Terrane,Central-Eastern China

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Journal of Earth Science 2011年第2期22卷 292-298页

作者：骆淼潘和平赵永刚 Institute of Geophysics & Geomatics China University of Geosciences Well logging company of North China Petroleum Bureau of SINOPEC

To understand the electrical structure of the Sulu（苏鲁） terrane,we analyzed the resis-tivity logs of the Chinese Continental Scientific Drilling main hole（CCSD-MH） and obtained the statis-tical characteristics of the resistivity log of ultrahigh-pressure（UHP） metamorphic *** check the logs＇ quality,we compared the resistivity log data with the core test *** two datasets show a good *** the whole,the resistivity of the UHP metamorphic rocks from the CCSD-MH is very high（mostly higher than 1 000 ？？m）.From orthogneiss to paragneiss,amphibolite,retrograded eclogite,rutile eclogite,phengite eclogite,and ultramafic rock,the resistivity decreases *** fracture zone,enrichment of metal minerals,and serpentinization of peridotite can probably cause the decrease of *** the electrical structure of the crust of Dabie（大别） terrane and Sulu terrane,we can conclude that（1） the electrical structure of the crust of Dabie terrane and Sulu terrane shows a very big difference,（2） the high-resistivity zone of the north Sulu orogen extended to a very great depth（60 km）,but the high-resistivity zone of Dabie orogen is over the depth of 25 km.

关键词： resistivity log CCSD-MH UHP metamorphic rock electrical structure Dabie-Suluterrane.

Stress-induced trend:the clustering feature of coal mine disasters and earthquakes in China

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International Journal of Coal Science & Technology 2020年第4期7卷 676-692页

作者： Bo Chen International logging company Great Wall Drilling CompanyBeijing 100101China School of Earth and Space Sciences Peking UniversityBeijing 100871China

Nearly half of coal mine disasters in China have been found to occur in clusters or to be accompanied by earthquakes nearby,in which all the disaster types are *** disturbances seem to exist among mining areas and to be responsible for the observed *** earthquakes accompanied by coal mine disasters may be the vital geophysical evidence for tectonic stress disturbances around mining *** paper analyzes all the possible causative factors to demonstrate the authenticity and reliability of the observed phenomena.A quantitative study was performed on the degree of clustering,and space-time distribution curves are *** the threshold of 100 km,47%of disasters are involved in cluster series and 372 coal mine disasters accompanied by *** majority cluster series lasting for 1-2 days correspond well earthquakes nearby,which are speculated to be related to local stress *** the minority lasting longer than 4 days correspond well with fatal earthquakes,which are speculated to be related to regional stress *** cluster series possess multiple properties,such as the area,the distance,the related disasters,etc.,and compared with the energy and the magnitude of earthquakes,good correspondences are *** indicates that the cluster series of coal mine disasters and earthquakes are linked with fatal earthquakes and may serve as footprints of regional stress *** relating to the geological model are made,and five disaster-causing models are *** earthquake research and disaster prevention,widely scientific significance is suggested.

关键词： Earthquake Coal mine disaster Cluster feature Stress disturbance

Utilizing NMR mud logging Technology To Measure Reservoir Fundamental Parameters in Well Site

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Energy and Power Engineering 2013年第4期5卷 1508-1511页

作者： Yingzhao Zheng Dehui Wan Muhammad Ayaz Caiqin Ma 1School of Energy Resources China University of Geosciences Beijing 100083 China 2Mud Logging International Department Great wall drilling company Beijing 100101 China Beijing Winfield Petroleum Technology company Beijing 100083 China mud logging International Department Great wall drilling company Beijing 100101 China

Nuclear Magnetic Resonance mud logging technology (NMR mud logging) is a new mud logging technology. Mainly applies the CPMG(Carr-Purcell-Meiboom-Gill)pulse sequence to measure transverse relaxation time (T2) of the fluid. NMR mud logging can measure drill cutting, core and sidewall core in the well site, also according to the experiment results, the sample type and size has little effect to analysis result. Through NMR logging, we can obtain several petrophysical parameters such as total porosity, effective porosity, permeability, oil saturation, water saturation, movable fluid saturation, movable oil saturation, movable water saturation, irreducible fluid saturation, irreducible oil saturation, irreducible water saturation, pore size and distribution in rock samples, etc. NMR mud logging has been used nearly 10 years in China, Sudan, Kazakhstan, etc. it plays an important role in the interpretation and evaluation of reservoir and its fluids.

关键词： NMR mud logging Porosity Oil Saturation Reservoir Fluids T2 Cutoff Spectrum

Numerical simulation of non-Archie electrophysical property of saturated rock with lattice Boltzmann method

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Petroleum Science 2009年第1期6卷 24-28页

作者： Yue Wenzheng Tao Guo Liu Dongming Yang Wendu State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum Beijing 102249 China Key Laboratory of Earth Prospecting and Information Technology China University of Petroleum Beijing 102249 China Research Centre of Well logging CNPC Key Laboratory of Well Logging China University of Petroleum Beijing 102249 China CNPC logging Changqing Business Division Xi＇an Shaanxi 710201 China Sichuan Petroleum Administration logging company Ltd. CNPC Chongqing 401147 China

The electrophysical property of saturated rocks is very important for reservoir identification and evaluation. In this paper, the lattice Boltzmann method （LBM） was used to study the electrophysical property of rock saturated with fluid because of its advantages over conventional numerical approaches in handling complex pore geometry and boundary conditions. The digital core model was constructed through the accumulation of matrix grains based on their radius distribution obtained by the measurements of core samples. The flow of electrical current through the core model saturated with oil and water was simulated on the mesoscopic scale to reveal the non-Archie relationship between resistivity index and water saturation （I-Sw）. The results from LBM simulation and laboratory measurements demonstrated that the I-Sw relation in the range of low water saturation was generally not a straight line in the log-log coordinates as described by the Archie equation. We thus developed a new equation based on numerical simulation and physical experiments. This new equation was used to fit the data from laboratory core measurements and previously published data. Determination of fluid saturation and reservoir evaluation could be significantly improved by using the new equation.

关键词： Non-Archie relation digital core model lattice Boltzmann method numerical simulation rock physical experiment