小口径膨胀波纹管护壁技术在四川煤炭普查ZK3-1孔的应用

膨胀波纹管技术在国内外石油钻井领域的应用已经颇有成效,但是针对地质钻探领域的小口径膨胀管的研究却成效甚微。为此专门研发了针对地质钻探行业的小口径膨胀管护壁技术。该技术成功应用于四川煤炭普查ZK3-1钻孔封堵漏失地层,护壁后正常钻进至终孔。此次小口径膨胀波纹管的成功应用,为地质钻探行业的事故处理提供了新方向,填补了我国在小口径膨胀管技术领域的空白。     

汶川地震断裂带科学钻探项目WFSD-4孔套管护壁技术

护壁技术是解决复杂地层钻探难题的关键技术之一。介绍了一些特殊的套管护壁技术在WFSD-4号孔钻探中的应用情况,包括在小间隙条件下下大直径套管技术、复杂钻孔活动套管护壁取心技术和用于强缩径地层的两阶段下套管固井技术等。     

第四纪松散层大口径水井成井工艺

本文以吉林省某地供水井为例,总结了第四纪砾石松散层大口径水井钻探施工方法及成井工艺。根据地层特点按照钻孔设计施工,保证了成井质量。     

丰山铜矿复杂地层钻进护壁技术

通过对丰山铜矿复杂地层全面的分析，总结过去处理复杂地层钻探护壁经验，摸索出一整套完善的护壁技术，较好地解决了丰山矿区复杂地层钻进护壁技术，极大地提高了钻进效率。     

膨胀套管护壁技术研究现状及其工作原理

膨胀套管护壁技术应用于地质钻探是一门全新的研究,对膨胀套管技术国内外研究现状和膨胀套管类型进行了介绍;确定了膨胀套管材质和膨胀器外型的选择原则;分析膨胀套管的膨胀机理;制定出膨胀套管护壁技术在施工过程中的流程。分析表明,膨胀套管护壁技术是完全可用于我国地质岩心钻探,通过推广应用,可大大丰富我国地质钻探护壁技术的手段。     

复杂地层深孔钻探泥浆护壁技术探讨与实践

深部找矿勘探给钻探技术提出了更高的要求.钻孔越深,施工周期越长,孔内往往越复杂,施工难度越大.在复杂地层进行深孔钻探更是如此,护壁技术显得尤为重要.结合近年来进行深孔钻探所遇到的问题,对复杂地层深孔钻进泥浆护壁技术进行了较深入的探讨,并在生产实践中对PHP泥浆和新型LBM泥浆进行了试验应用,取得了较好的效果,对深孔钻探施工具有一定的借鉴意义.     

自撑式护壁管及推送钻具

一、自撑式护壁管该管在小口径钻探施工时,用于严重漏失,有地下水及流砂活动的小溶洞,裂隙等复杂地层护壁堵漏。是用薄弹簧钢板卷成,放置     

对水文、水井成井工艺存在的问题分析和体会

目前在水文、水井成井工艺中存在的问题是:卵石地层钴进效率低,钴具回转阻力大,消耗钻头多。钴穿复盖层,护壁管下不到底,钻进中在护壁管外串通冲洗液,引起护壁管周围坍塌甚至无法继续工作。成并后洗井已达到水清砂净的程度,但出水量不够,同邻井相比水量相差悬殊。就上面这些问题分别叙述谈点个人分析体会。     

云南大理洪积地层成井工艺

云南大理洪积地层成井工艺复杂,技术难度大、要求高,科学合理的技术应用尤为关键。介绍了大理学院改扩建工程供水井成井工艺。     

深孔复杂地层护壁堵漏技术组合的优选研究

归纳、总结了“深部矿体勘查钻探技术工艺方法优化研究”课题研究中有关深孔钻探复杂地层护壁堵漏方法优化选择的认识与看法,提出护壁堵漏技术及其组合的优化思路、评价指标、工作程序和优选方法,概要介绍了石岩坑铁矿区护壁堵漏对策优化成果。     

The terrestrial fauna of the Late Triassic Pant-y-ffynnon Quarry fissures,South Wales,UK and a new species of Clevosaurus (Lepidosauria: Rhynchocephalia)

Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco.     

The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts

The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H₂O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H₂O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species.     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ₁ roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003).     

HYDROGEOLOGY

正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level     

METAMORPHIC PETROLOGY

正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7),     

SERIALS

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GEOPHYSICAL EXPLORATION

正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci-     

QUATERNARY GEOLOGY & GEOMORPHOLOGY

正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli-     

PETROLEUM GEOLOGY

正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.)     

GEOCHEMISTRY

正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861