最新刊期
卷 12 ， 期 1 ， 1991
- 摘要：Deep buried sandstones of Lower Cretaceous in North Songliao Basin are compositionally immature lithic arkose and feldspathic litharenite. The main diagenesis of the sandstones includes:authigenetic clay rim, quartz and feldspar overgrowth, albitization,authigenetic laumontite and the dissolution of feldspar and laumontite. The albitization of anorthosite is the primary mechanism for generating laumontite, whereas the transformation of clay minerals provides sodium and silicon for the precipitation of laumontite.关键词：松辽盆地;砂岩;成岩作用;浊沸石647|416|0更新时间：2023-05-30
- 摘要：Zhoukou Depression that crosses the two different tectonic units of North China massif and the southern marginal structural belt of the North China massif is the biggest depression covering an area of 32000km2 in the south part of North China Basin. In the Mesozoic, NWW-trend tensile and compressive sags that filled with rapid accumulated volcanic-clastic rocks and oil-bearing molass formations developed in Runan, TanzhuangShengqiu regions due to intracontinental volcanic activities and A-type subduction caused by continent-continent collision of North China Plate and Yangzhi Plate. In the Eogene, an arc-shaped tectonic framework protruding to south as a whole in the depression was controlled by tensile-wrench stress field. It contuins 2 uplifts alternated with 3 sags, including North part sag zone, Linying-Dancheng uplift zone, Central sag zone, PingyuTaihe uplift zone and South part sag zone from north to south. Each of the sag zones ismade up of several dustpan-shaped sags. It formed a group of dustpan-shaped sags with multi-depocenter and multi-hydrocarbon generation center. The tensile-wrench arc-shaped tectonic system resulted from combined acting of dextral shear-wrench movement of Xiayi-Woyang-Macheng fault in Tanlou fault zone with sinistral shear-wrench movement of NWW trend fault in this region. Comprehensive studies indicate that the Central sag zone is favourable for hydrocarbon exploration in the future. The Mesozoic System in the South sag zone and the Lower Paleozoic System in the North sag zone are prospective, and worthy to be further studied.关键词：周口坳陷;构造演化;含油气盆地;华北地块;秦岭—大别造山带;郯庐断裂;剪切平移;油气资源评价622|619|0更新时间：2023-05-30
- 摘要：The free hydrocarbon and vacuum pyrolyzed hydrocarbon of Botryococcus are analyzed by GC-MS system. The free hydrocarbon is mainly composed of C27-C33 alkenes,and also contains C13-C25 n-alkane, C15-C21 is oprenoid alkanes and trace sterane and terpane as well. The pyrolyzed hydrocarbon is C13-C36 n-alkanes, C15-C21is oprenoid alkanes, sterane and terpane. The author considers that the hydrocarbon of Botryococcus bearing Neogene mudstones in Gudong Region, Shengli Oilfield in Shandong, are generated by Botryococcus.关键词：丛粒藻;游离烃类;真空热解法;热解烃类546|430|0更新时间：2023-05-30
- 摘要：The calcisponge reefs of the Upper Permian Changxing carbonate platform in Eastern Sichuan and Western Hubei Provinces can be divided into three types: rimming frame-work reefs developed on the eastern margin of the platform, linear or point framework reefs located within the platform and baffling point reefs on the ramp of the western plat-form, the framework reef complexes of which, both rimming and linear or point, are favourable oil and gas reservoirs. The formation and distribution of reef bodies are mainly controlled by faulting, especially synsedimentary faulting. The reef bodies developed throughout the whole Changxing stage, the best of which are middle and late stages. From the end of Changxing to Early Triassic, a rapid rising of sea-level took place, resulted in drowning out of the entire platform and all the reef bodies.关键词：生物樵;碳酸盐岩;同生断裂;海平面升降;晚二叠世;川东鄂西614|416|0更新时间：2023-05-30
- 摘要：Kailu Region in the south part of the Songliao Basin is a Meso-Cenozoic sedimentary province that covers an area of 3.2×104km2 and developed the Upper Jurassic Series,Cretaceous and part of Tertiary Systems. The sediments that overlaid on Proterozoic-Paleozoic metamorphic basement reached the maximum thickness of 4500m. Kailu Region underwent four tectonic evolution stages that are tensional faulting, fault-subsiding,depressing and compresson-shearing, and can be divided into 5 first order tectonic units and 14 secondary tectonic units. A series of elongated contemporaneous normal faults that stretches NNE or NW with big vertical throws and a group of separate graben-like lake basins in which igneous rocks developed in the early stage and shore-shallow lake sediments in the late stage formed in the Jurassic due to the underthrusting of the Pacific Plate and the updoming of mantle.Faulting basically stopped in the Early Cretaceous and the whole region subsided under isostutic effect, resulting in stable extensive shore-shallow lake deposits. From Late Cretaceous to Tertiary, the variation of regional stress field caused horizontal compression on the southeast margin, thus forming northeast trend surface folds and causing particular normal faults to reversal. There are thick dark mudstones in the Jurassic (occupying 60-90% of the total thickness), which has rich organi matter (organic carbon 2-3% ), type-Ⅰ and type-Ⅱ of kerogen and widespread oil-gas shows. The threshold depth for oil generation is 1300m. It is considered that the Jiufotang and Shahai Formations are the main oilgenerating intervals, and the Lujiabao Depression, Bao'an and Naimanqi Sags in the Zhezhong Depression are the most prospective regions for hydrocarbon exploration.关键词：开鲁地区;构造特征;上侏罗统;油气资源评价778|629|0更新时间：2023-05-30
- 摘要：The basic principle of sequence stratigraphic theory is the eustatic sea level changes which control the occurrence of cyclic depositional successions within a basin. System tracts within any sequence have a specific stratul pattern and are significant for oil and gas exploration. Most of Mesozoic and Cenozoic depressions in the east part of China are faulted basins (half grabens) filled by more than one cyclic sequences and ought to be analyzed based on the theory of sequence stratigraphy regardless they are marine in originor not. However, some difficulties must be solved and some of their own specific patterns must be esteblished before this theory can be used because of many inland faulted basins in East China had been linked up with the open sea occasionally, and their stratal patterns are different from the Vail's one as the result of abundant sediments have been supplied from peripheral areas surrounding the basins.关键词：海面升降;层序;体系域597|823|0更新时间：2023-05-30
- 摘要：The experiment of hydrocarbon exploration by means of aerial γ-spectrometry is carried out by the author and others. The result shows that there is a clearly low value anomaly of different degree over the Quaternary System of the oilfields in the depression.关键词：泌阳凹陷;航空伽马能谱测量;非地震勘探561|606|0更新时间：2023-05-30
- 摘要：The distribution of discovered oil and gas pools in Dongying fault-subsided Basin is controlled by regional caprocks. The caprocks are: mudstones of the first member of the Shahejie Formation in intra-part of the basin, the shallower buried mudstones of the Guantao Formation in the west part and wide spread igneous rocks in the south part. The organic coordination of caprocks in the three different horizons has successfully protected oil and gas from escaping,made the basin the richest one among all hydrocarbon-bearing basins within the Bohai Bay petroliferous province and controlled the distribution regularity of oil and Ras pools.关键词：区域性盖层;封堵作用;油气藏分布;东营断陷盆地590|810|0更新时间：2023-05-30
- 摘要：The Wuerxun Depression, a sub-basin of the Hailar Basin, covers an area of 2350km2. The Upper Jurassic Damoguaihe Formation, which is a significant hydrocarbon generating and reservoiring sequence and up to 2000m thick, can be divided into two seismic sequences and four subsequences. According to the study of seismic and sedimentary facies, it can be primarily classified as nearshore subaqueous fan, offshore turbidite fan,longitudinal transported turbidite body, non-fan turbidite body, delta, beach and bar. The formation, evolution and spatial distribution of these sedimentary bodies were controlled by tectonic movement, lake-level changes and sediment supply.关键词：地震层序;地震相;沉积体;大磨拐河组;乌尔逊凹陷581|392|0更新时间：2023-05-30
- 摘要：The Jurassic was the prime period in the development of Turpan-Hami Cenozoic continental Basin. The Early and Middle Jurassic was lake transgressive sedimentary stage and source rocks developed well; the late Middle Jurassic and Late Jurassic was lake regressive sedimentary stage in which reservoir and cap rocks developed. Jurassic depocenters and subsiding centers were in North, Toksun-Shanshan and Wubu Sags. The first one is the main oil-generating sag, organic matter in Lower Jurassic source rocks of which began to generate oil in Late Jurassic and reached oil-generating peak in the Eogene, whereas that of the last two sags still in lower matured or immatured stages. The structures within the basin, including Kokyar anticline belt in the North Sag, the west Yanmu-Huoyanshan anticline be1t of Hu oyanshan-Sandaoling uplift formed primarily in late Yanshanian-Himalayan Epoches, matched well with the oil generating phase of Lower Jurassic source rocks in time and space, and were favourable for hydrocarbon migration and accumulation. So the Structures mentioned above are the most prospective areas for Mesozoic hydrocarbon. Qiktai and Shengjinkou anticline oil pools situated in Huoyanshan anticline beltare the examples of this kind, followed by Toksun-south Shanshan and Wubu Sags. Yanshan and Dadun structures in west Yanmu anticline are favor to trap hydrocarbon generated from both sags in the north and south.关键词：吐鲁番—哈密盆地;含油气盆地;侏罗系;有机质演化;油气资源评价746|580|0更新时间：2023-05-30
- 摘要：The results of aeromagnetic survey in Songliao, Jiyang and Qaidam Basins indicate that weak geomagnetic abnormality occurred over the oilfields in these basins. It is suggested that horizontal differential quotient and residual methods are favourable ways to obtain weak geomagnetic abnormality.关键词：微磁异常;松辽盆地;济阳坳陷;柴达木盆地546|566|0更新时间：2023-05-30
- 摘要：1990年,我国油、气资源勘查工作在西部、中部、东部和海域又取得了重大进展,下列地区有重要发现。 1.塔北沙雅隆起区在新构造、新层位打出一批高产油气井。638|446|0更新时间：2023-05-30
- Postal code：102206
- Tel：010-56607717，56608306
- Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19
京公网安备11010802024621 - It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
- Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
0