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Study on the igneous rock Seismic Facies in Yingmai 32 Blocks

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Open Journal of Earthquake Research 2020年第5期9卷 417-426页

作者： Lingling Yan Quanwen Liu Xuefen Liu BaYin GuoLeng Vocational and Technical College Korla China College of Petroleum Engineering Guangdong University of Petrochemical Technology Maoming China Energy Engineering College Longdong University Qingyang China

The western part of north Tarim Uplift underwent multi-stage tectonic movement and multiple stages of magmatism. igneous rocks are associated with carbonate and buried deep. The seismic response characteristics of ign... 详细信息

The western part of north Tarim Uplift underwent multi-stage tectonic movement and multiple stages of magmatism. Igneous rocks are associated with carbonate and buried deep. The seismic response characteristics of igneous rocks are similar in many respects to the seismic response characteristics of karst, making the identification and prediction of igneous rocks more difficult. This study compares the seismic reflection characteristics of igneous rocks. Set up three types of igneous rock seismic facies model penetration type, fracture type and central type. And it concluded that a time-slice, coherence analysis, analysis of the seismic properties of the layers and the method of three-dimensional engraving to identify the igneous rocks. This method has been applied to the identification and prediction of carbonate rock buried and hill igneous rocks in the north Tarim basin YingMaiLi region and has achieved good results.

关键词： igneous rock Seismic Facies Time Slice Coherent Data Volume Amplitude Tuning

Influence of Magmatic Intrusion on Abnormal Hydrocarbon Generation and Expulsion of Source rock:A Case Study of the Dongying Sag, Bohai Bay Basin

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Acta Geologica Sinica(English Edition) 2024年第5期98卷 1322-1337页

作者： LI Chuanming ZENG Jianhui WANG Maoyun LONG Hui LIU Shuning State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum (Beijing) College of Geosciences China University of Petroleum (Beijing)

How gabbro affects the generation and expulsion of hydrocarbons in muddy surrounding rocks is clarified by analyzing thin section, major and trace elements, total organic carbon（TOC）, pyrolysis, extracts and vitrinite reflectance data from source rocks in the Chunxi area the Dongying Sag, Bohai Bay Basin, eastern China. The results show that a magma intrusion brings copious heat to the source rocks, which promotes abnormal maturation of organic matter（OM） and rapid hydrocarbon generation. The CH4and H2produced by gabbro alteration play a role in hydrocarbon generation of source rocks. The hydrothermal process during magma intrusion provides many different minerals to the source rock, resulting in carbonate-rich surrounding mudstone. The carbonate and clay minerals produced by volcanic mineral alteration jointly catalyze the hydrocarbon generation of the source rock. The high-temperature baking of the intrusion results in hydrothermal pressurization and hydrocarbon generation pressurization, causing many fractures in the surrounding rock. The generated oil and gas are discharged through the fractures under diffusion and pressure. Mantle-derived CO2is also conducive to the expulsion of hydrocarbons because of its strong enrichment capacity for hydrocarbons.

关键词： catalysis Dongying Sag Eocene high temperature hydrocarbon generation igneous rock source rock

Geodynamic Indications on igneous rocks of Transitory Geologic Setting during the Late Hercynian in North Tarim Basin

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Journal of China University of Geosciences 2008年第6期19卷 577-590页

作者：汤良杰黄太柱崔泽宏杨素举朱毅秀金仙梅 State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum Key Laboratory for Hydrocarbon Accumulation Mechanism Ministry of Education Basin & Reservoir Research Center China University of Petroleum Northwest Oilfield Company SINOPEC Research Institute of Petroleum China Exploration & Development

Basic and intermediate-acidic igneous rocks were developed during the late Hercynian in North Tarim basin. The geochemistry characteristics of the rocks show that basic volcanic rock has K2O/Na2O = 0.18-0.61 〈 1 and falls into a category of basalt of sodium system. The rocks contain enriched large-ion lithophile elements （LILE）（K, Rb, Ba, Th） and high-field strength elements （HFSE）（Nb, Ta, Ti, Zr, P）, with the magmatic material from the upper mantle. The intermediate-acidic volcanicrocks have σ = 1.91-2.96 〈 3.3, K2O/Na2O = 1.25-1.59 〉 1, as well as the enriched LILE and depleted HFSE （Nb, Ta, Ti, P）, presenting the same trace element compositions and characteristics as in the granitic rocks of South Tianshan Mt.; they are either shoshonitic igneous rocks or high-K calc-alkaline igneous rocks, with a distinct crust-derived component feature. The comprehensive analyses on the characteristics of the trace elements, the graphic tectonic discrimination, and the distribution features of the two types of igneous rocks show that they were formed under different tectonic settings and geodynamic environments： the basalt was formed in the active rifting period when the active mantle upwelling caused the thinning of lithosphere; the intermediateacidic volcanic-intrusive rock was formed in the island arc area of the active continental margin in North Tarim; the formation is associated with the plate subduction during the course of South Tianshan Ocean closure--the subduction of Middle Tianshan Mountain toward the Tarim plate. The basic and intermediate-acidic igneous rocks reveal a tectonic regime of extension-extrusion transition, which is significant in determining the key tectonic revolution period of North Tarim basin.

关键词： late Hercynian igneous rock element geodynamics North Tarim basin.

Generation of electromotive force in igneous rocks subjected to non-uniform loading

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Earthquake Science 2011年第6期24卷 593-600页

作者： Akihiro Takeuchi mer Aydan Keizo Sayanagi Toshiyasu Nagao Earthquake Prediction Research Center Institute of Oceanic Research and DevelopmentTokai UniversityShizuoka 424-8610Japan Department of Marine Civil Engineering Faculty of Marine Science and TechnologyTokai UniversityShizuoka 424-8610Japan

When one end of an air-dry igneous rock block was uniaxially loaded in laboratory, there appeared an electromotive force that made electric currents flow from the stressed volume to the unstressed volume. Quartz-free rocks such as gabbro also generated this force, stronger than quartz-bearing rocks such as granite. This indicates that the piezoelectric effect of quartz and the electrokinetic effect of pore water do not make a large contribution toward generating the electromotive force. We focus on peroxy bond that is one of the abundant lattice defects in igneous rock-forming minerals. When mechanical loading deforms the lattice structure around this defect and breaks its bond, its energy levels change and act like an accepter. As an electron is trapped at this defect from a neighbor 02- site, a positive hole is activated there. They attempt to diffuse toward the unstressed volume through the valence band and are simultaneously affected by the attractive electric force with the electrons trapped in peroxy bonds. This leads to a polarization in the stressed volume and the generation of electromotive force between the stressed and unstressed volumes. Similar electromotive force may be generated in the Earth＇s crust where inhomogeneous stress/strain is changing.

关键词： electromotive force igneous rock non-uniform loading positive hole

Heterogenous zircons from Mesozoic igneous rocks in the North China Craton and their tectonic implications

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Global Geology 2009年第3期12卷 122-133页

作者： MIAO Laicheng FAN Weiming ZHANG Fuqin LIU Dunyi Institute of Geology and Geophysics Chinese Academy of Sciences Beifing 100029 China Beijing SHRIMP Centre Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

Based on a synthesis of zircon inheritance from Mesozoic igneous rocks in the eastern portion of the North China Craton （NCC） , it is proposed that inherited zircons with Neoproterozoie ages identified from these rocks are of a heterogenous derivation from the Yangtze/South China block, rather than from the NCC itself. The mechanism that introduces these zircons incorporated into the NCC is likely by tectonic underplating during the Triassic continental subduction of the Yangtze block beneath the NCC. Tectonic addition of abundant crustal materials represented by the heterogenous zircons into the NCC, probably along Moho or weak interfaces within the NCC＇s crust, led to the crustal thickening in the NCC. These heterogenous materials, either as （partial） source rocks or as contaminants of the magmas generated during an extension environment following the crustal thickening, were reworked and therefore have significant contribution to petrogenesis of the Mesozoic igneous rocks. The crustal thickening resulted from the tectonic underplating, as indicated by the distribution extent of the heterogenous zircons, is spatially similar to that of the lithospheric thinning, with both mainly occurring in the eastern segment of the NCC. This is probably suggestive of an intrinsic relation between the thickening and thinning events during the Mesozoic evolution of the NCC.

关键词： inherited zircon igneous rock Neoproterozoic Mesozoic North China Craton

Reflectivity forward modeling and a CSSI method seismic inversion study of igneous intrusive area,coked area,and gas-enriched area located within a coal seam

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Mining Science and Technology 2009年第4期19卷 457-462页

作者： XU Yong-zhong CUI Ruo-fei HUANG Wei-chuan CHEN Tong-jun CHEN Shi-zhong DONG Shou-hua School of Resource and Geosciences China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China Institute of Geophysics China Earthquake Administration Beijing 100081 China

We applied the reflectivity method and the constrained sparse spike inverse modeling(CSSI) method to the interpretation of coal field lithologic seismic *** introducing the principles of these two methods we discuss some parameters of a geological model involving possible gas enriched areas or intruded igneous *** geological model was constructed and a 60 Hz seismic response profile was obtained looking for igneous rock intrusion and coked areas of the coal seam using the reflectivity *** from synthesized logging data from two wells and a synthesized seismic wavelet we calibrated the model to show accurate ***,we predicted the lithology within a 10 m igneous rock area,a 3 m coal seam area,and a coked area using the CSSI *** results show that the CSSI technique can identify hard to recognize lithologic features that normal profil-ing methods might *** can quantitatively analyze and evaluate the intrusive area,the coked area,and the gas-enriched area.

关键词： CSSI reflectivity method igneous rock coal seam coked area gas-enriched area

The time-frequency electromagnetic method and its application in western China

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Applied Geophysics 2008年第2期5卷 127-135页

作者：董卫斌赵晓鸣刘芳赵国中国石油集团东方地球物理公司涿州072751

The time-frequency electromagnetic （TFEM） method combines frequency-domain sounding with time-domain sounding to form a comprehensive system so that it is possible to select different frequencies and induce waves according to the objective depth to be explored. During processing not only resistivity but also polarization information can be provided so we can study resistivity as well as predict oil-bearing characteristics simultaneously. Timedomain resistivity information is obtained by pseudo-2D resistivity inversion and frequencydomain IP information is obtained using the Cole-Cole model. Some successful applications in western China show that it provides unique results in an overthrust zone, deep igneous rock investigation, and hydrocarbon prediction.

关键词： TFEM overthrust igneous rock hydrocarbon prediction

Analysis on structure of igneous formation with fractal dimension of logs

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Global Geology 2007年第1期10卷 55-58页

作者： Xue YANG Baozhi PAN Ying ZHANG College of Geoe.Geoexploration Science and Technology Jilin University Changchun 130026 China

Reflecting the structure of igneous formation by calculating fractal dimension of logs,the fractal dimension of pyroclastic is larger than *** of pyroclastic is more complicated than that of lava,so reflecting the structure of igneous formation's complexity with fractal dimension is *** is feasible to reflect the structure of igneous formation's complexity with fractal dimension.

关键词： log igneous rock fractal

A Potential Strain Indicator for Brittle Failure Prediction of Low-porosity rock:Part I-Experimental Studies Based on the Uniaxial Compression Test

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A Potential Strain Indicator for Brittle Failure Prediction ...