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冀中坳陷岩溶热储地下水对流活动的聚热效应

地球物理学报 2024年第8期67卷 3075-3088页

作者：饶松罗洋黄顺德张英王社教王一波胡圣标页岩油气富集机理与有效开发国家重点实验室北京100083 中国石化深部地质与资源重点实验室北京100083 长江大学地球科学学院武汉430100 中国石油渤海钻探第一录井公司天津300280 中国石化石油勘探开发研究院北京102206 中石油深圳新能源研究院有限公司广东深圳518052 中国科学院地质与地球物理研究所北京100029

地形起伏及浮力均可以驱动地下水流,在此过程中通过对流方式快速传递热量,进而改变温度分布模式,造成局部显著热异常,对岩溶储层地热资源聚敛有着重要意义.冀中坳陷岩溶热储发育,岩溶缝洞系统为地下水提供了良好的垂向和水平径流条件,... 详细信息

地形起伏及浮力均可以驱动地下水流,在此过程中通过对流方式快速传递热量,进而改变温度分布模式,造成局部显著热异常,对岩溶储层地热资源聚敛有着重要意义.冀中坳陷岩溶热储发育,岩溶缝洞系统为地下水提供了良好的垂向和水平径流条件,形成了独特的对流-传导复合型地热系统.通过温度场、水动力场耦合数值模拟,本文聚焦冀中坳陷岩溶热储强迫对流和自由对流联合作用模式及其聚热效应.二维有限元数值模拟结果表明,在自由对流模型的基础上,地形驱动的强迫对流叠加作用使岩溶层内地下水流速显著增加.地形驱动流体可以推动自由对流单元向坡下滚动,强化了地下水对流的聚热效应.高阳凸起和献县凸起显著的热异常主要归因于岩溶储层和断裂带内地下水自由对流的传热效应,基底起伏造成的热流折射聚热效应是次要的.此外,地形驱动下,自由对流单元向流域下游方向推进可能是献县凸起较高阳凸起热异常更为显著的重要原因.

关键词：聚热效应地下水对流自由对流强迫对流岩溶热储冀中坳陷

Thermal regime transition in eastern North China and its tectonic implication

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Science China Earth Sciences 2005年第6期48卷 840-848页

作者： FU Mingxi hu shengbiao WANG Jiyang Institute of Geology & Geophysics Chinese Academy of Sciences Beijing 100029 China Institute of Geology & Geophysics Chinese Academy of Sciences Beijing 100029 China Institute of Geology & Geophysics Chinese Academy of Sciences Beijing 100029 China

The pre-Cenozoic formation in the Cenozoic depositon centres in eastern North China reached its maximum temperature at present, and the earlier paleo-temperature, therefore, has been overprinted, but the record of paleo-temperature by the vitrinite reflectance (Ro) has not been overprinted by the later thermal events in the pre-Cenozoic formation located in the uplift or in the Paleozoic-Mesozoic residual basins out of the Cenozoic depositon centres. The reconstruction of paleo-temperature gradient and paleo-heat flow, based on the vitrinite reflectance in the Paleozoic and the Mesozoic structural layers in boreholes, indicated that the eastern North China was characterized by much higher paleo-temperature gradient (40-55℃/km) and heat flow (>80 mW/m2) during the Middle-Late Mesozoic than those in the Early Mesozoic and at present. The higher paleo-heat flow during the Middle-Late Mesozoic implies that the thickness of the 'thermal' lithosphere at that time was just 50-55 km, it had been much thinned relative to the thickness (135-148 km) at the Early Mesozoic. The transition of near-surface thermal regime in eastern North China occurred around 110 Ma, and the corresponding deep tectonothermal processes should take place at ~160 Ma.

关键词： eastern North China, thermal regime, paleo-heat flow, "thermal" lithospheric thickness, thinning of litho-sphere.

Thermal-history reconstruction of the Baiyun Sag in the deep-water area of the Pearl River Mouth Basin, northern South China Sea

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Frontiers of Earth Science 2018年第3期12卷 532-544页

作者： Xiaoyin TANG Shuchun YANG shengbiao hu Geothermal and Environmental Research Laboratory Xi'an Jiaotong University Xi'an 710049 China CNOOC Research Institute Beijing 100027 China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China

The Baiyun Sag, located in the deep-water area of the northern South China Sea, is the largest and deepest subbasin in the Pearl River Mouth Basin and one of the most important hydrocarbon-accumulation depression areas in China. Thermal history is widely thought to be of great importance in oil and gas potential assessment of a basin as it controls the timing of hydrocarbon generation and expulsion from the source rock. In order to unravel the paleo-heat flow of the Baiyun Sag, we first analyzed tectonic subsidence of 55 pseudo-wells constructed based on newly interpreted seismic profiles, along with three drilled wells. We then carried out thermal modeling using the multi-stage finite stretching method and calibrated the results using collected present-day vitrinite reflectance data and temperature data. Results indicate that the first and second heating of the Baiyun Sag after 49 Ma ceased at 33.9 Ma and 23 Ma. Reconstructed average basal paleo- heat flow values at the end of the rifting periods are -57.7- 86.2 mW/m2 and -66.7-97.3 mW/m2, respectively. Following the last heating period at 23 Ma, the study area has undergone a persistent thermal attenuation phase, and basal heat flow has cooled down to ～64.0-79.2 mW/m2 at present.

关键词： thermal history tectonic subsidence Baiyun Sag deep-water area South China Sea

Thermal history of the Sichuan Basin,SW China:Evidence from deep boreholes

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Science China Earth Sciences 2016年第1期59卷 70-82页

作者： Zhu Chuan Qing hu shengbiao QIU NanSheng RAO Song YUAN YuSong State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing 102249China College of Geosciences China University of PetroleumBeijing 102249China State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China College of Geosciences Yangtze UniversityJinzhou 434023China Exploration and Productton Research Institute SINOPECBeijing 100083China

The Sichuan Basin is a superimposition basin composed of terrestrial and marine sediments that is well known for its abundant petroleum resources. Thermal history reconstruction using paleogeothermal indicators, including vitrinite reflectance and thermochronological data, shows that different structural subsections of the Sichuan Basin have experienced various paleogeothermal episodes since the Paleozoic. The lower structural subsection comprising the Lower Paleozoic to Middle Permian(Pz–P_2) successions experienced a high paleogeothermal gradient(23.0–42.6°C/km) at the end of the Middle Permian(P_2), whereas the upper structural subsection comprising Late Permian to Mesozoic strata underwent a relatively lower paleogeothermal gradient(13.2–26.9°C/km) at the beginning of the denudation(Late Cretaceous or Paleocene in the different regions). During the denudation period, the Sichuan Basin experienced a successive cooling episode. The high paleogeothermal gradient resulted from an intensive thermal event correlated to the Emeishan mantle plume. The heat flow value reached 124.0 m W/m^2 in the southwestern basin near the center of the Emeishan large igneous province. The low geothermal gradient episode with heat flow ranging from 31.2 to 70.0 m W/m^2 may be related to the foreland basin evolution. The cooling event is a result of the continuous uplift and denudation of the basin.

关键词：四川盆地热历史西南古地温梯度峨眉山大火成岩省证据深井峨眉山地幔柱

Paleogeothermal Reconstruction and Thermal Evolution Modeling of Source Rocks in the Puguang Gas Field, Northeastern Sichuan Basin

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Journal of Earth Science 2016年第5期27卷 796-806页

作者： Chuanqing Zhu Nansheng Qiu huanyu Cao Song Rao shengbiao hu State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum College of Geosciences China University of Petroleum Exploration Branch SINOPEC College of Geosciences Yangtze University State Kay Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences

The thermal history and organic matter maturity evolution of the source rocks of boreholes in the Puguang gas field were reconstructed. An integrated approach based on vitrinite reflectance and apatite fission track data was used in the reconstruction. Accordingly, the geothermal conditions of gas accumulation were discussed in terms of the geological features of reservoirs in the northeastern Sichuan Basin. The strata reached their maximum burial depth in the Late Cretaceous era and were then uplifted and denuded continuously to the present day. The geothermal gradient and heat flow in the Late Cretaceous era were approximately 30.0 °C/km and 66 mW/m2, respectively, which were both higher than those at present. The tectonothermal evolution from the Late Cretaceous era to the present is characterized by denudation and cooling processes with an erosion thickness of2.7 km. In addition to the Triassic era, the Jurassic era represents an important hydrocarbon generation period for both Silurian and Permian source rocks, and the organic matter maturity of these source rocks entered into a dry gas period after oil generation. The thermal conditions are advantageous to the accumulation of conventional and unconventional gas because the hydrocarbon generation process of the source rocks occurs after the formation of an effective reservoir cap. In particular, the high geothermal gradient and increasing temperature before the denudation in the Late Cretaceous era facilitated the generation of hydrocarbons, and the subsequent cooling process favored its storage.

关键词： paleogeothermal reconstruction apatite fission track vitrinite reflectance thermalevolution of source rocks Puguang gas field.

Terrestrial heat flow in Junggar Basin, Northwest China

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Chinese Science Bulletin 2000年第19期45卷 1808-1813页

作者： WANG Shejiao hu shengbiao LI Tiejun WANG Jiyang ZHAO Wenzhi Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China Research Institute of Petroleum Exploration and Development CNPCBeijing 100083China

Based on temperature logs of 117 boreholes and thermal conductivity of 119 rock samples, the first group of 35 heat flow data in the Junggar Basin are presented. The thermal gradients vary between 11.6 and 26.5℃/km , and the thermal conductivity changes from 0.17 to 3.6 W/mK. Heat flow ranges from 23.4 to 53.7 mW/m2 with a mean of (42.3±7.7) mW/m2. The heat flow pattern shows that heat flow is higher in the uplifts and lower in the depressions. The factors affecting the heat flow and its distribution include basin type, basement structure, sediment thickness, radioactive heat generation, etc. The overall low present-day heat flow in the Junggar Basin reflected its tectonothermal evolution characterized by lithospheric thickening, thrust and fault at shallow crust as well as consequently quick subsidence during the Late Cenozoic.

关键词： geothermal gradient thermal conductivity terrestrial heat flow Junggar Basin.

Tectono-thermal evolution of the Liwan Sag, deepwater area in the Zhujiang River Mouth Basin, northern South China Sea

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Acta Oceanologica Sinica 2018年第2期37卷 66-75页

作者： TANG Xiaoyin huANG Shaopeng YANG Shuchun JIANG Guangzheng JI Mo hu shengbiao Geothermal and Environmental Research Laboratory Xi'an Jiaotong University Xi'an 710049 China State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100049 China CNOOC Research Institute Beijing 100027 China

The Liwan Sag, with an area of 4 000 km-2, is one of the deepwater sags in the Zhujiang River（Pearl River） Mouth Basin, northern South China Sea. Inspired by the exploration success in oil and gas resources in the deepwater sags worldwide, we conducted the thermal modeling to investigate the tectono-thermal history of the Liwan Sag,which has been widely thought to be important to understand tectonic activities as well as hydrocarbon potential of a basin. Using the multi-stage finite stretching model, the tectonic subsidence history and the thermal history have been obtained for 12 artificial wells, which were constructed on basis of one seismic profile newly acquired in the study area. Two stages of rifting during the time periods of 49–33.9 Ma and 33.9–23 Ma can be recognized from the tectonic subsidence pattern, and there are two phases of heating processes corresponding to the *** reconstructed average basal paleo-heat flow values at the end of the rifting events are -70.5 and -94.2 mW/m^2 respectively. Following the heating periods, the study area has undergone a persistent thermal attenuation phase since 23 Ma and the basal heat flow cooled down to -71.8–82.5 mW/m^2 at present.

关键词： tectono-thermal evolution thermal history heat flow deepwater area Liwan Sag

Comparison of coalbed gas generation between huaibei-huainan coalfields and Qinshui coal basin based on the tectono-thermal modeling

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Science China Earth Sciences 2011年第7期54卷 1069-1077页

作者： WU YuDong JU YiWen HOU QuanLin hu shengbiao PAN JieNan FAN JunJia College of Earth Science Graduate University of the Chinese Academy of Sciences Beijing 100049 China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China Institute of Resources & Environment Henan Polytechnic University Henan 454000 China

The geothermal history and the tectonic subsidence history of the huaibei-huainan coalfields were reconstructed by using the vitrinite reflectance data, and their correlative restriction on coalbed gas generation of huaibei-huainan coalfields and Qinshui coal basin was discussed. The burial, thermal, and maturity histories of are similar between huaibei coalfield and huainan coalfield, obviously different from those of Qinshui coal basin. Based on the tectono-thermal evolution characters of huaibei-huainan coalfields and Qinshui basin, the process of coalbed gas generation can be divided into three stages: (1) During Early Mesozoic, both in huaibei-huainan and Qinshui, the buried depth of Permian coal seams increased rapidly, which resulted in strong metamorphism and high burial temperature of coal seams. At this stage, the coal rank was mainly fat coal, and locally reached coking coal. These created an environment favoring the generation of thermogenic gas. (2) From Late Jurassic to Cretaceous, in the areas of huaibei-huainan, the strata suffered from erosion and the crust became thinning, and the Permian coal-bearing strata were uplifted to surface. At this stage, the thermogenic gas mostly escaped. Conversely, in Qinshui basin, the cover strata of coal seams kept intact during this stage, and the thermogenic gas were mostly preserved. Furthermore, with the interaction of magmatism, the burial temperature of coal seams reached higher peak value, and it was suitable for the secondary generation of thermogenic gas. (3) From Paleogene onward, in area of huainan-huaibei, the maturity of coal and burial temperature were propitious to the generation of secondary biogenic gases. However, in Qinshui basin, the maturity of coal went against genesis of second biogenic gas or thermogenic gas. By comparison, huaibei-huainan coalfields are dominated by thermogenic gas with a significant biogenic gas and hydrodynamic overprint, whereas Qinshui basin is dominated mainly by therm

关键词：煤层气发电两淮煤田沁水煤田煤田构造天然气发电淮北煤田淮南煤田沁水盆地

Interaction of fluid dynamic factors in the migration and accumulation of natural gas

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Chinese Science Bulletin 2002年第14期47卷 1207-1211页

作者： SONG Yan XIA Xinyu WANG Zhenliang WANG Yi hu shengbiao Research Institute of Petroleum Exploration and Development Beijing 100083China Institute of Geochemistry Chinese Academy of SciencesGuiyang 550002China Northwest University Xi’an 710069China Chinese University of Petroleum Dongying 257062China Institute of Geology Chinese Academy of SciencesBeijing 100029China

The migration of fluid petroleum gas, described as fluid potential, depends only on gravity, fluid pressure controlled by depression and capillary force during tectoni-cally stable period; but on tectonic stress during the tectoni-cally active period with severe compression. This method is applied in the Junggar Basin, showing that the migration of Jurassic gas during Cretaceous and Eocene and the migration of Permian gas from Jurassic till the present are determined by capillary force and fluid pressure (including overpressure) which is controlled by depression; the migration of Jurassic gas from Eocene till the present and the migration of Permian gas during Triassic are controlled by tectonic stress.

关键词： petroleum migration fluid potential tectonic stress fluid pressure Junggar Basin.