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研究并分析了充气泡沫泥浆，介绍了配制方法和泥浆性能，在完整地层使用该泥浆钻进提高了效率，在漏失地层使用，可防漏治漏，提高了工程质量，降低了成本。 相似文献
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如何选用水文水井钻探泥浆 总被引：3，自引：0，他引：3
前言目前,在水文水井钻探施工中,人们已逐渐体会到了使用泥浆的优越性。各单位都在推广泥浆钻进方法。然而,一些单位在使用泥浆时存在一定肓目性。本文想结合水井水文钻探的特点,浅谈泥浆的作用、分类和选用依据。其目的在于进一步用好泥浆,提高我们的水文水井钻探技术。 相似文献
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近三年来，我局煤田钻探技术取得了较大的发展和进步，使用了新型千米钻机、大排量水泵；冲洗液由单一的清水、泥浆发展到具有多功能的冲洗介质，液态的、空气的、雾化的；泥浆由煤碱剂、钙质泥浆发展到使用高分子处理剂的多种化学处理剂泥浆；钻进方法和工艺多种多样，使用φ75、φ91、φ101绳索取心打煤，广泛采用双管单动钻具，单变双（动）超前式钻具和冲击回转式钻具；新型有效的钻头；钻孔测斜装置更加完善准确；一些辅助的补心器、地面除砂装置和先进仪表也有相应发展，逐步向系列化，标准化、配套化过渡。 相似文献
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泥浆在煤系地层钻进中的应用 总被引：1，自引：0，他引：1
从泥浆在钻探施工中的作用出发,详细介绍了泥浆材料、造浆方法、泥浆质量以及泥浆土的鉴别与配制,并运用实例,介绍二种地层条件下泥浆的使用方法：在地层条件比较好的情况下使用泥浆替代套管支护孔壁;在复杂地层钻进中使用泥浆保护孔内安全。 相似文献
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一、前 言79年地质部安徽淮北泥浆工作会议后，PAM不分散低固相泥浆及无固相冲洗液在地质部门已广泛推广使用。在复杂地层钻进，提高效率，降低成本方面均取得了较显著的效果。但是，目前在使用PAM无固相冲洗液中也存在着一些问题，使推广使用受到影响。其中问题之一是由于现场缺乏测定PAM浓度的方法，以致在使用PAM过程中补充加入PAM时，带有很大的盲目性和浪费现象。寻求一种简而易行的适于现场使用的测定PAM浓度的方法，已成为急待解决的问题之一。 相似文献
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本文介绍了泥浆基础材料、泥浆性能测试方法、泥浆相关设备等,以及施工土壤的不同需采用不同泥浆的方法,该文是水平定向钻进施工泥浆使用的基础指南。 相似文献
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本文通过对泥浆中颗粒的沉降特性分析，从量上得出泥浆性能对泥浆中颗粒的悬浮携渣能力。泥浆是一流变性的流体，对泥浆性能的把握，应综合考虑，而不偏向于某个指标。提出了在实践中对泥浆的正确使用和泥浆性能取用的建议。 相似文献
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沉积构造是沉积学研究的核心内容之一,而泥裂作为物理成因中的暴露成因构造,一直受到学者的关注。此次研究
以甘肃敦煌阿克塞河和党河地区的泥裂为研究对象,根据泥裂多边形平面形态特征和边缘形态特征划分泥裂的类型,表征
不同类型泥裂的几何学特征,总结泥裂发育的影响因素,并探讨几种特殊泥裂的成因机制。研究结果表明,甘肃敦煌地区
发育矩形泥裂、圆形泥裂、不规则泥裂、复式泥裂以及边缘翘起型泥裂;泥裂的发育受到温度及其变化、泥质沉积物的性
质、上下物质的差异、含盐度和后期生物改造的影响;矩形泥裂多发育在倾斜地层之上;边缘翘起型泥裂泥质沉积物一般
较薄,沉积物底部为松散的粉砂岩,其形成一般经历初始阶段、破裂阶段、分离阶段和翘起阶段四个过程;复式泥裂反映
了古水体、古气候的多期次变化,对古环境恢复具有一定的指导意义。 相似文献
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Yanbo Feng Dongyan Liu Dongsheng Li Qianlei Zhao 《Geotechnical and Geological Engineering》2017,35(4):1357-1367
Micro-test approaches like XRF, XRD and SEM and routine soil tests were applied to analyze the chemical composition, mineral composition, microstructure and basic physical property indicators of three kinds of red mud, which were the Bayer red mud, sintering red mud as well as the mixed red mud prepared by sintering red mud and the Bayer red mud at the mixture ratio of 1:1. On this basis, in the dehumidification-moisture absorption process, the relationship among matric suction, hydraulic conductivity and moisture content of the three types of red mud was studied by transient hydraulic characteristic cyclic test of unsaturated mud. The results indicated: physicochemical properties of the three kinds of red mud, such as mineral composition, microstructure and size grading varied remarkably; on the condition of the same moisture content, SWCC and HCFC of the three kinds of red mud demonstrated obvious hysteresis effect, which is the most significant on the Bayer mud, less on the sintering red mud and the least on the mixed mud; the Bayer red mud possess smaller hydraulic conductivity, worse drainage and stability. 相似文献
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The management of tailings depends on its consolidation behavior to great extent. The red mud tailings in Pingguo, Guangxi is of high water content and void ratio. The present paper takes the red mud aluminiferous tailings in Pingguo, Guangxi as prototype. Model tests were carried out to study the consolidation behavior of red mud aluminiferous tailings that were landfilled layer by layer. The layered settlement and the water discharge caused by self-weight consolidation were studied. The influence of the latter landfilled layer of red mud on the previous layer was analyzed. The results show that the settlement at the surface with time can be divided into two stages. During the first stage, a thin layer of water appeared and the thickness kept increasing at the top of the mud surface with the particle of red mud sinking. During the second stage, water drained from the mud and settlement developed slowly. Cracks developed at the surface due to evaporation and the red mud near the surface became unsaturated. When the previous landfilled layer consolidated to the degree that the water content was less than 40%, the later landfilled layer of red mud will have little influence on the settlement of previous landfilled layer. 相似文献
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四川盆地早古生代灰泥丘中的微生物及其造岩和成丘作用 总被引：13，自引：0，他引：13
作为生物礁的特殊类型,灰泥丘在古生代十分发育,许多学者都认为它们是通过微生物造岩作用而形成的,而且,也在现代湖泊中发现了由兰菌藻的生命活动所形成的灰泥沉积物及灰泥丘。但是国际上一直没有在古生代灰泥丘中发现过细菌等微生物的实体化石,微生物促使碳酸钙沉淀、聚集的能力和机理也不明确。四川盆地北缘寒武纪和志留纪灰泥丘发育,笔者通过扫描电镜及能谱分析,在国际上首次发现了 (川西北志留纪 )灰泥丘中菌藻类微生物的实体化石及其特征的造岩成丘现象,发现的菌藻类微生物实体化石有三种类型 :1.表面光滑的卵形球体型;2.表面粗糙的椭球体型;3.网状结构型。而且,对寒武纪和志留纪灰泥丘凝块石作生物标志化合物分析也证明了其有机质生源为菌藻类微生物。这些凝块石灰泥丘中的菌藻类实体化石都显示了不同的沉积、造岩和成丘功能,因而证实了微生物在形成古生代灰泥丘中具重要作用。 相似文献
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近年来在八岭山-花园背斜构造翼部有新的油气发现,有必要对其构造性质进行再认识。通过地震解剖,认为渔洋组-新沟嘴组(K2y-Ex)有盐和盐泥两类构造叠置,可进一步划分为盐丘-盐柱多层叠置构造、盐泥丘-盐泥株(柱)构造和盐泥丘构造;盐泥构造的形成是塑化的盐泥岩顺层蠕动使每一单层变厚、多层累加增厚的叠加效应结果,盐泥沿早期断层侵入或底辟导致逆断层的产生,使断层具有下正上逆的特点;差异负荷和火山热对流为其主导动力学机制;渔洋组-沙市组下段(K2y-Es下)盐丘-盐柱产生期为中始新世,主要形成期为晚渐新世,沙市组上段-新沟嘴组(Es上-Ex)盐泥构造产生期为晚渐新世,两者均于更新世基本定型;盐泥构造翼部地层-盐泥封挡和上倾尖灭岩性-盐泥封挡圈闭为潜在的油气藏勘探类型。 相似文献
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Zhifeng Wan Xianqing Wang Ye Lu Yuefeng Sun Bin Xia 《International Geology Review》2017,59(13):1723-1735
Mud volcanoes can provide important information about the underlying strata, hydrocarbon accumulation, and recent neotectonic movements in an area. The fluids erupting from mud volcanoes provide important information about their formation and evolution. The ion concentration and the hydrogen and oxygen isotopes of the fluids that were erupted from the three mud volcano groups, Baiyanggou, Aiqigou, and Dushanzi, and nearby rivers in the southern margin of the Junggar basin, northwestern China, are studied. The concentrations of Na and Cl in mud volcano fluids are clearly elevated, displayed as the Na-Cl type. The δD and δ18O values of the fluids are similar between the Baiyanggou and Dushanzi mud volcanoes, which are mainly from ancient sedimentary pore water. However, the Aiqigou mud volcano is depleted in dissolved Cl and shows lower δ18O values with mixed sources, including deep pore and local meteoric water. Two types of mud volcanoes are proposed in this study. One type is low-energy mud volcanoes with a low volume of fluid of deep origin on the hillcrest, which display as mud pool/pie/hole. The other type is high-energy mud volcanoes having mixed fluid origin in the valley and formed in the shape of a mud cone (dome). 相似文献
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M.B. Cita J.M. Woodside M.K. Ivanov R.B. Kidd A.F. Limonov Scientific Staff of Cruise TTR - Leg 《地学学报》1995,7(4):453-458
Direct observation of active emission of fluids and mud from a submarine mud volcano were made for the first time in an extensive field of mud diapirs and mud volcanoes on the Mediterranean Ridge using a video camera towed 2 m above the seafloor in 1800 m of water. This recent research using both long range and deep-towed sidescan sonar systems indicates also that diapirism and eruption of mud along the crest of the ridge is more common than previously thought. The southwards increase in age of rock fragments carried within the erupted mud supports the hypothesis that the fluid mud becomes overpressured within a southward-dipping backthrust from the Inner Deformation Front of this accretionary prism. 相似文献
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黄河内蒙古段上覆水、悬浮物和底泥重金属特征及生态风险研究 总被引：24，自引：12，他引：12
系统地采集黄河内蒙古段上覆水、悬浮物和底泥样品,分析其中重金属元素的含量。采用地质累积指数法和潜在生态危害系数法,研究了黄河干流内蒙古段的上覆水、悬浮物和底泥的重金属沿程分布特征、污染程度和生态风险。分析结果显示:除了As元素,悬浮物中重金属元素含量总体上高于底泥中的含量。地质累积指数法评价结果表明:悬浮物和底泥属于无污染—中度污染,悬浮物总体上比底泥污染严重;潜在生态危害系数法评价结果表明:底泥和悬浮物中重金属的生态危害总体上属轻微状态;因此,生态风险指数法和地质累积指数评价结果基本一致。 相似文献