塔河油田上奥陶统良里塔格组储层特征及控制因素     

卢宇峰  刘存革  杜春晖  姜昊罡  梁锋 《新疆地质》2011,29(2):198-202

塔河油田勘探表明,上奥陶统良里塔格组是潜在勘探层位.通过岩心、测井、薄片、物性、钻井和生产测试等资料综合分析,认为良里塔格组具两套岩性组合,顶部和底部为浅水高能沉积,中间为深水低能沉积,物性比中下奥陶统差,渗透率非均质性较强,主要受泥质条带和裂缝影响.储集空间主要包括溶蚀孔隙、溶蚀孔洞和裂缝3类.储层类型有孔隙-裂缝型和孔洞-裂缝型两类,后者是主要储层类型.储集空间形成主要受同生期和表生期岩溶作用、埋藏溶蚀作用和断裂作用4个因素控制,其中断裂作用是良里塔格组储层形成和分布的主控因素.  相似文献   

欠平衡钻井随钻储层评价技术方法与应用     

唐思洪  孟英峰  李皋  李永杰  魏纳  尹强  蔡道钢 《新疆地质》2011,29(1):103-105

欠平衡钻井随钻储层评价技术是在欠平衡条件下采用地面监测设备,根据地层渗流及井筒多相流耦合模型分析来获取储层参数的一项新技术.分析了随钻过程储层渗流边界特点,建立和求解该技术的渗流数学模型.通过现场实例数据分析表明,理论评价结果与实测结果一致,验证了该技术的正确性与可行性.  相似文献   

沙尔湖煤田巨厚煤层异地成煤分析     

黄铁栋  王平  李慧  陈俊  周欢  韦欣 《新疆地质》2011,29(3):324-326

通过对主煤层煤岩组分对比发现,沙尔湖煤田煤显微煤岩组分以惰质组分为主,组分因埋深不同有差异.利用镜质组与惰质组组份含量比例关系,推测煤层在沼泽积水较深还原环境中形成.煤中惰质组分含量较高,说明成煤期地壳缓慢上升,沼泽积水变浅的氧化环境.煤田自西向东主煤层形成时期沼泽积水深浅(地壳升降)变化韵律一致,早期深水中心偏向东部(葛洲坝煤矿方向),晚期深水中心偏向西部(格鑫煤矿方向),东部持续缓慢抬升使成煤阶段处于氧化环境,惰质组含量逐渐增高,并明显高于西部.同时,煤中无机质含量较高,反映当时为水动力条件较弱的成煤环境.据巨厚煤层产出、聚煤中心赋存(直接在二叠系老地层上)和煤层稳定性及变化趋势多方煤层特征,认为沙尔湖煤田巨厚煤层的形成具异地成煤特点.  相似文献   

滴西12井区储集层伤害机理研究及防膨效果评价     

冷严  吴运强  殷新花  阿达莱提  宋志理  王兰芬 《新疆地质》2011,29(4):466-469

针对滴西12井区勘探开发中可能存在的储层伤害问题,通过开展储层敏感性特征、注水适应性评价及防膨稳定剂效果评价等综合研究,结合该区块储层具体情况,明确现场注水伤害类型及程度,推出相对合适、匹配、经济实用的防膨稳定剂,减小注水开发过程中储层敏感性伤害,增强注水开发效果,从而达到高效、合理开发滴西12井区油藏目的.  相似文献   

Description and Phylogenetic Position of Dinosaur Eggshells from the Luanchuan Area of Western Henan Province, China     

Kohei TANAKA  Lü Junchang  Yoshitsugu KOBAYASHI  Darla K. ZELENITSKY  XU Li  JIA Songhai  QIN Shuang  TANG Min’an 《《地质学报》英文版》2011,85(1):66-74

Here, we examine 145 dinosaur eggshells from a new fossil locality in the Qiupa Formation (Upper Cretaceous) of the Luanchuan area in western Henan Province, China. The eggshells display elongatoolithid macro- and microstructures, including ridges and nodes on the outer surface, two ultrastructural layers, and an undulatory boundary between the mammillary and continuous layers. A phylogenic analysis shows that the Luanchuan eggshells belong to the ooclade Elongatoolithidae. Within Elongatoolithidae, the thickness ratio of the mammillary layer to the entire eggshell, and the porosity of the Luanchuan eggshells are comparable to the oogenera Macroolithus and Elongatoolithus. There is no direct evidence for the taxonomic identity of the Luanchuan eggshells; however, they were likely laid by oviraptorids based on their phylogenetic position and their similarities with known oviraptorid eggs.  相似文献   

A New Darwinopterid Pterosaur from the Middle Jurassic of Western Liaoning, Northeastern China and its Ecological Implications   总被引：2，自引：0，他引：2  

Lü Junchang  XU Li  CHANG Huali  ZHANG Xingliao 《《地质学报》英文版》2011,85(3):507-514

A new species of Darwinopterus, D. robustodens sp. nov. is described and named. Based on the new specimen, the diagnostic characters of Darwinopterus are amended and include: rostral dentition composed of well-spaced, spike-like teeth; the longest teeth are confined to the anterior half of the tooth row; tooth alveoli have raised margins; nasoantorbital fenestra confluent; inclined quadrate; elongate cervical vertebrae with low neural spine and reduced or absent ribs; long tail of more than 20 caudals partially enclosed by filiform extensions of the pre- and postzygapophyses; short metacarpus less than 60 per cent length of humerus, fifth toe with two elongate phalanges and curved second pedal phalanx of the fifth toe with the angle between the proximal and distal segments about 130 degrees. The complete specimen of the new pterosaur D. robustodens sp. nov. provides much more osteological information. The differences in tooth morphologies between Darwinopterus modularis and D. robustodens sp. nov. suggest that they filled different ecological niches. The hard integument-bearing Coleoptera may have been the main food source of Darwinopterus robustodens.  相似文献   

Sumixam maximus gen. and sp. nov., a New Pennsylvanian Species of Archaeorthoptera (Neoptera; Indiana, USA)     

Olivier BéTHOUX  Christin GROSSMANN 《《地质学报》英文版》2011,85(3):515-520

A new Mazon-Creek-type fossil specimen is described as Sumixam maximus gen. and sp. nov., assigned to the taxon Archaeorthoptera Béthoux and Nel, 2002 (composed of Orthoptera and some fossil relatives): it exhibits one of the diagnostic character states of this taxon, which is the fusion of CuA (emerging from M + CuA) with CuP, or a branch of it. A more precise taxonomic assignment is out of reach. The new taxon exhibits a fusion of the anterior branch of MA with RP, and a point of divergence of MA and MP located near the point of divergence of CuA (from M + CuA), but lack a branching of CuPa. This unique combination of character states is probably derived with respect to a number of contemporaneous species. Sumixam maximus gen. and sp. nov. is most likely the closest known relative of the panorthopterans, which include all the recent Archaeorthoptera.  相似文献   

New Fossil Xyelidae (Insecta, Hymenoptera) from the Yixian Formation of Western Liaoning, China   总被引：1，自引：0，他引：1  

GAO Taiping  ZHAO Yunyun  REN Dong 《《地质学报》英文版》2011,85(3):528-532

In this paper one new genus and two new species, Brachyoxyela brevinodia sp. nov. and Brachyoxyela gracilenta sp. nov., in the subfamily Macroxyelinae of the family Xyelidae, are described and illustrated. The specimens were collected from the Yixian Formation, the Upper Jurassic to Lower Cretaceous, of Beipiao City, Liaoning Province, northeastern China. The new genus is established based on the characters that vein Sc meets R only beyond origin of Rs, third antennal segment is almost equal in length to the rest flagellomeres combined, terminal flagellomeres increasingly shortened toward apex, and vein 2r-rs inclined toward the apex of wing.  相似文献   

Two New Fossil Lacewing Species from the Middle Jurassic of Inner Mongolia, China (Neuroptera: Grammolingiidae)   总被引：2，自引：0，他引：2  

SHI Chaofan  YANG Qiang  REN Dong 《《地质学报》英文版》2011,85(2):482-489

Two new species of lacewings are described and illustrated from the Jiulongshan Formation (Middle Jurassic) of Inner Mongolia, China: Leptolingia calonervis sp. nov. and Litholingia ptesa sp. nov. (Grammolingiidae). The species can be distinguished by the following features: the outermost branch of MP2 on the hind wing did not reach the margin of wing in Leptolingia calonervis sp. nov.; the second branch of Rs forked deeply while other branches of Rs forked much later in Litholingia ptesa sp. nov..  相似文献   

First Description of Fossil Naucoridae (Heteroptera: Nepomorpha) from Late Mesozoic of China     

ZHANG Weiting  YAO Yunzhi  REN Dong  ZHAO Yunyun 《《地质学报》英文版》2011,85(2):490-500

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