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Wide/narrow azimuth acquisition footprints and their effects on seismic imaging

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petroleum Science 2008年第4期5卷 308-313页

作者： Di Bangrang Xu Xiucang wei Jianxin key Laboratory of CNPC Geophysical Exploration China University of Petroleum Beijing 102249 China state key Laboratory of {2. 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

Acquisition footprint is a new concept to describe the seismic noise in three-dimensional seismic exploration and it is closely related to geometry and observation shuttering. At present, the study on acquisition footprints has become a hot spot. In partnership with the Dagang Oilfield, we used the channel sand body seismic physical model to study the characteristics of wide/narrow azimuth acquisition footprints and analyzed and compared the two types of footprints and their effects on target imaging. In addition, the footprints caused by data processing of the normal moveout offset （NMO） stretching aberration were discussed. These footprints are located only in the shallow or middle layer in the time slice, and possibly affect the imaging of shallow target layers, and have no influence on deep target imaging. Seismic physical modeling has its advantages in the study of acquisition footprints.

关键词： Wide/narrow azimuth geometry acquisition footprint stretching aberration time slice seismic imaging

Study on attribute characterization for reservoir dynamic monitoring by seismic

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Science china Earth Sciences 2008年第S2期51卷 218-225页

作者： CHEN XiaoHong1,3,LI JingYe2,3 & ZHAO wei4 1 key Lab of Geophysical Exploration of CNPC,china petroleum university,beijing 102.49,china 2 Basin & Reservoir Research Center,china petroleum university,beijing 102.49,china 3 state key Laboratory of petroleum resource and prospecting,china university of petroleum,beijing 102.49,china 4 Research Center of CNOOC,beijing 100027,china 1. key Lab of Geophysical Exploration of CNPC China Petroleum University Beijing 102249 China 3. state key Laboratory of {2. resource and prospecting China University of Petroleum Beijing 102249 China 2. Basin & Reservoir Research Center China Petroleum University Beijing 102249 China 4. Research Center of CNOOC Beijing 100027 China

Study on characterizing reservoir parameters dynamic variations by time-lapse seismic attributes is the theoretical basis for effectively distinguishing reservoir parameters variations and conducting time-lapse seismic interpretation,and it is also a key step for time-lapse seismic application in real oil fields. Based on the rock physical model of unconsolidated sandstone,the different effects of oil saturation and effective pressure variations on seismic P-wave and S-wave velocities are calculated and analyzed. Using numerical simulation on decoupled wave equations,the responses of seismic amplitude with different offsets to reservoir oil saturation variations are analyzed,pre-stack time-lapse seismic attributes differences for oil saturation and effective pressure variations of P-P wave and P-S converted wave are calculated,and time-lapse seismic AVO (Amplitude Versus Offset) response rules of P-P wave and P-S converted wave to effective pressure and oil saturation variations are compared. The theoretical modeling study shows that it is feasible to distinguish different reservoir parameters dynamic variations by pre-stack time-lapse seismic information,including pre-stack time-lapse seismic attributes and AVO information,which has great potential in improving time-lapse seismic interpreta-tion precision. It also shows that the time-lapse seismic response mechanism study on objective oil fields is especially important in establishing effective time-lapse seismic data process and interpreta-tion scheme.

关键词： time-lapse seismic dynamic monitoring rock physical model pre-stack attribute Amplitude Versus Offset (AVO)

Enhancing the resolution of seismic data based on the generalized S-transform

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petroleum Science 2009年第2期6卷 153-157页

作者： Tian Jianhua Song wei yang Feizhou state key Laboratory of {2. resource and prospecting China University of Petroleum Beijing 102249 China key Laboratory of CNPC Geophysical prospecting China University of Petroleum Beijing 102249 China

In this paper, we analyze the seismic signal in the time-frequency domain using the generalized S-transform combined with spectrum modeling. Without assuming that the reflection coefficients are random white noise as in the conventional resolution-enhanced techniques, the wavelet which changes with time and frequency was simulated and eliminated. After using the inverse S-transform for the processed instantaneous spectrum, the signal in the time domain was obtained again with a more balanced spectrum and broader frequency band. The quality of seismic data was improved without additional noise.

关键词： Time-frequency domain generalized S-transform spectrum modeling instantaneous spectrum balanced spectrum

Experimental study on the e ect of fracture scale on seismic wave characteristics

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petroleum Science 2008年第2期5卷 119-125页

作者： wei Jianxin Di Bangrang Wang Qiang state key Laboratory of {2. resource and prospecting CNPC Key Lab of Geophysical Exploration China University of Petroleum Beijing 102249 China

In fractured reservoir beds, fracture characteristics affect seismic wave response. Fractured models based on the Hudson＇s fractured medium theory were constructed in our laboratory by a backfilling technique. For the same fracture density, the variations of the velocity and amplitude of the primary wave and shear wave parallel and perpendicular to the fracture were observed by altering the diameter （scale） of the penny-shaped fracture disk. The model test indicated that an increase of fracture scale increased the velocity and amplitude of the primary wave by about 2.. When the shear wave propagated parallel to the fracture, the velocity of the fast shear wave hardly changed, while the velocity of slow shear wave increased by 2.6% with increasing fracture scale. The results indicated that an increase of fracture scale would reduce the degree of anisotropy of the shear wave. The amplitudes of slow shear waves propagating parallel and perpendicular to fractures decreased with increasing fracture scale.

关键词： Fracture scale Hudson's fracture theory primary wave and shear wave velocity anisotropy,model test

催化加氢热解/气相色谱-质谱研究沉积物中生物标志物

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燃料化学学报 2005年第5期33卷 586-589页

作者：周建伟李术元钟宁宁中国石油大学(北京)重质油国家重点实验室北京102249 中国石油大学(北京)资源与信息学院北京102249

针对地质体中高演化沉积有机质,应用催化加氢热解/气相色谱-质谱方法测定了干酪根中以共价键结合的生物标志物。结果表明,实验样品的催化加氢热解产物收率明显高于二氯甲烷(DCM)索氏抽提,产物色谱图中饱和烃的峰形、保留时间和质谱特征... 详细信息

针对地质体中高演化沉积有机质,应用催化加氢热解/气相色谱-质谱方法测定了干酪根中以共价键结合的生物标志物。结果表明,实验样品的催化加氢热解产物收率明显高于二氯甲烷(DCM)索氏抽提,产物色谱图中饱和烃的峰形、保留时间和质谱特征与索氏抽提峰形基本一致;对比两种方法产物中饱和烃主要指标甾烷m/z2.7和藿烷m/z191表明,经过加氢还原,干酪根分子网络中共价键结合着两种生物标志物分子骨架得到印证,为催化加氢热解提取沉积物中生物标志物的方法可靠性提供了依据。催化加氢热解/气相色谱-质谱技术是一种对研究高演化沉积有机质中生物标志化合物有独特作用的有效分析手段。

关键词：沉积有机质催化加氢热解色谱-质谱生物标志物索氏抽提

Formation,evolution,reconstruction of black shales and their influence on shale oil and gas resource

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china Geology 2024年第3期7卷 551-585页

作者： Shi-zhen Li Qiu-chen Xu Mu liu Guo-heng liu Yi-fan Li Wen-{2. Wang Xiao-guang {2. wei-bin liu Yan-fei An Peng Sun Tao liu Jiang-hui Ding Qian-chao Li Chao-gang Fang state key Laboratory of Continental Shale Oil Beijing 100083China The key Laboratory of Unconventional Oil and Gas Geology China Geological SurveyBeijing 100083China Oil and Gas Survey China Geological SurveyMinistry of Natural ResourcesBeijing 100083China state key Laboratory of Lithospheric and Environmental Coevolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China School of Geosciences China University of Petroleum(East China)Qingdao 266580China School of Energy resources China University of Geosciences(Beijing)Beijing 100083China key Laboratory of petroleum {2.s Research Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China School of resource and Environment Engineering Anhui UniversityHefei 230601China yangtze university Wuhan 430100China Nanjing Center China Geological SurveyNanjing 210016China National Elite Institute of Engineering CNPCBeijing 100096China

Black shales are important products of material cycling and energy exchange among the lithosphere,atmosphere,hydrosphere,and *** are widely distributed throughout geological history and provide essential energy and mineral resources for the development of human *** also record the evolution process of the earth and improve the understanding of the *** review focuses on the diagenesis and formation mechanisms of black shales sedimentation,composition,evolution,and reconstruction,which have had a significant impact on the formation and enrichment of shale oil and *** terms of sedimentary environment,black shales can be classified into three types:Marine,terrestrial,and marine-terrestrial transitional *** formation processes include mechanisms such as eolian input,hypopycnal flow,gravity-driven and offshore bottom *** a geological perspective,the formation of black shales is often closely related to global or regional major geological *** enrichment of organic matter is generally the result of the interaction and coupling of several factors such as primary productivity,water redox condition,and sedimentation *** terms of evolution,black shales have undergone diagenetic evolution of inorganic minerals,thermal evolution of organic matter and hydrocarbon generation,interactions between organic matter and inorganic minerals,and pore *** terms of reconstruction,the effects of fold deformation,uplift and erosion,and fracturing have changed the stress state of black shale reservoirs,thereby having a significant impact on the pore *** activity promotes the formation of veins,and have changed the material composition,stress structure,and reservoir properties of black *** resource effects,the deposition of black shales is fundamental for shale oil and gas resources,the evolution of black shales promotes the shale oil and gas formation and storage,and the reconstruction of black shales wou

关键词： Black shales Shale oil and gas resource effects Sedimentary environment Sedimentary process Organic matter accumulation Diagenetic evolution Thermal evolution Organic matter and inorganic minerals Tectonic reconstruction Oil and gas exploration engineering Veins Fluid activity

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渤海海域现今地温场分布特征

石油与天然气地质 2009年第4期30卷 412-419页

作者：邱楠生魏刚李翠翠张媛郭永华中国石油大学油气资源与探测国家重点实验室北京102249 中国石油大学盆地与油藏研究中心北京102249 中海石油(中国)有限公司天津分公司技术部天津300452

渤海海域平均大地热流值为(60.9±8.7)mW/m2.其中石臼坨凸起、沙磊田凸起和渤南凸起热流值高达70～80mW/m2.渤中凹陷、黄河口凹陷和秦南凸起次之,其热流值也达到65～75mW/m2.辽东湾、庙西、莱州湾、歧口、沙南、埕北等地区热流值较低,... 详细信息

渤海海域平均大地热流值为(60.9±8.7)mW/m2.其中石臼坨凸起、沙磊田凸起和渤南凸起热流值高达70～80mW/m2.渤中凹陷、黄河口凹陷和秦南凸起次之,其热流值也达到65～75mW/m2.辽东湾、庙西、莱州湾、歧口、沙南、埕北等地区热流值较低,基本上都在65mW/m2.下。渤海海域平均地温梯度为30.8℃/km,但各构造单元存在差异,其中沙磊田凸起、渤中、渤南、石臼坨等地区地温梯度明显较高,一般为32.42./km之间;凹陷区地温梯度低,一般为2.～32./km之间。渤海海域地温场的分布与渤海海域的构造形态相似,大体反映了北北东走向的郯庐断裂构造型态。

关键词：大地热流地温梯度地温场渤海海域

Research on thermal insulation materials properties under HTHP conditions for deep oil and gas reservoir rock ITP-Coring

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petroleum Science 2024年第4期21卷 2625-2637页

作者： Zhi-Qiang He He-Ping Xie Ling Chen Jian-Ping yang Bo Yu Zi-Jie wei Ming-Zhong Gao state key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering College of Water Resource and Hydropower Sichuan University Guangdong Provincial key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization Institute of Deep Earth Sciences and Green Energy College of Civil and Transportation Engineering Shenzhen University School of Mechanical Engineering Sichuan University College of Polymer Science and Engineering Sichuan University

Deep oil and gas reservoirs are under high-temperature conditions, but traditional coring methods do not consider temperature-preserved measures and ignore the influence of temperature on rock porosity and permeability, resulting in distorted resource assessments. The development of in situ temperaturepreserved coring(ITP-Coring) technology for deep reservoir rock is urgent, and thermal insulation materials are key. Therefore, hollow glass microsphere/epoxy resin thermal insulation materials(HGM/EP materials) were proposed as thermal insulation materials. The materials properties under coupled hightemperature and high-pressure(HTHP) conditions were tested. The results indicated that high pressures led to HGM destruction and that the materials water absorption significantly increased; additionally,increasing temperature accelerated the process. High temperatures directly caused the thermal conductivity of the materials to increase; additionally, the thermal conduction and convection of water caused by high pressures led to an exponential increase in the thermal conductivity. High temperatures weakened the matrix, and high pressures destroyed the HGM, which resulted in a decrease in the tensile mechanical properties of the materials. The materials entered the high elastic {2. at 150.C, and the mechanical properties were weakened more obviously, while the pressure led to a significant effect when the water absorption was above 10%. Meanwhile, the tensile strength/strain were 13.62.MPa/1.3%and 6.09 MPa/0.86% at 100.C and 100 MPa, respectively, which meet the application requirements of the self-designed coring device. Finally, K46-f40 and K46-f50 HGM/EP materials were proven to be suitable for ITP-Coring under coupled conditions below 100.C and 100 MPa. To further improve the materials properties, the interface layer and EP matrix should be optimized. The results can provide references for the optimization and engineering application of materials and thus technical su

关键词： Deep oil and gas reservoir rock In situ temperature-preserved coring (ITP-Coring) Hollow glass microsphere/epoxy resin thermal insulation materials (HGM/EP materials) High-temperature and high-pressure (HTHP) Physical and mechanical properties

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歧口凹陷烷烃气碳、氢同位素特征及成因类型

天然气地球科学 2011年第6期22卷 1054-1063页

作者：国建英钟宁宁李剑王东良于学敏马卫中国石油大学(北京)油气资源与探测国家重点实验室北京102249 中国石油勘探开发研究院廊坊分院河北廊坊065007 中国石油大港油田勘探开发研究院天津大港300280

通过对天然气碳同位素、氢同位素和干燥系数关系的分析,划分歧口凹陷的烷烃类天然气成因类型,拓展研究区天然气勘探领域,明确今后勘探方向。歧口凹陷的烷烃类天然气包括生物气、生物—热成因混合气和热成因气3个大类,热成因气是凹陷的... 详细信息

通过对天然气碳同位素、氢同位素和干燥系数关系的分析,划分歧口凹陷的烷烃类天然气成因类型,拓展研究区天然气勘探领域,明确今后勘探方向。歧口凹陷的烷烃类天然气包括生物气、生物—热成因混合气和热成因气3个大类,热成因气是凹陷的主力天然气类型,其探明储量占总储量的95%以上。热成因气按母质类型又划分为陆相油型气和煤成气,油型气按成熟度分为低熟气、成熟气和高熟气,主要来自第三系湖相泥岩;埕海潜山天然气属于高熟煤成气,主要来自石炭系—二叠系煤系烃源岩。今后,歧口凹陷天然气勘探应坚持以中深层为主要层段,以潜山和深层碎屑岩为主要勘探领域,同时加强煤成气资源潜力的研究。

关键词：稳定同位素天然气成因类型歧口凹陷黄骅坳陷