The cementation quality experiments testing cement with different formation lithology were examined in the simulated high pressure deep well in sandstone or shale with different porosity and permeability.
为此,采用自行研制开发的JHT-02高温高压固井质量评价仪(物理模型按10∶1缩小,并制作了相应的缩小换能器),模拟高压深层井段不同孔隙度与渗透率的砂岩与泥岩,进行了水泥与不同岩性地层胶结性能的试验,对比试验结果及现场测井曲线,发现:对于深井中存在异常高压的井段,地层岩性和孔渗性能影响水泥与地层的胶结强度,随着孔渗性能的变化,水泥与泥岩和砂岩地层的胶结强度变化规律一致,随孔隙度与渗透率的增加胶结强度下降;在高压常温环境下,水泥与砂岩地层的胶结强度要低于水泥与泥岩地层的胶结强度;对于相同渗透率的泥岩地层,高压带较低压带胶结更理想;建议在高压常温井段选择合适的钻井液体系,防止水泥浆在高渗地带过多失水,以提高固井质量。
Based on the downhole complicated conditions analysis of deep wells and ultra-deep wells in Kuche region,and comprehensively considering the influence factors,such as formation lithology and formation pressure,the probability density function of downhole complicated conditions was determined using the existing data by the probable theory method.
在对库车地区深井超深井井下复杂情况分析的基础上,综合考虑地层岩性和地层压力等影响因素,根据已有资料,用随机理论方法确定发生井下复杂情况的概率密度函数,得出井下复杂情况发生的位置及可能性,提出新的井身结构必封点确定方法。
Based on the data obtained in the engineering geologic investigation,this paper makes analysis and evaluation on the landforms and formation lithology of Xiashijiazhuang Reservoir.
在工程地质勘测所获得资料的基础上,对下石家庄水库地貌与地层岩性进行了分析与评价。
A conclusion is drawn that,topography,stratum lithology,geological structures and river erosion are the primary causes of landslides,but rainfall and human engineering activities are main factors to draw forth landslides.
分析表明地形地貌、地层岩性、地质构造以及河流侵蚀是滑坡形成的基础,而降雨和人类工程活动是其形成的诱发因素。
Based on the Zoeppritz′s equation seismic multiwave AVA inversion of stratum lithology parameter has been discussed in this paper.
以 Zoeppritz方程为基础 ,对多波 AVA地层岩性参数反演进行探讨。
35 km2),and analyzed the relationships between site type groups and stratum lithology.
35 km2,并分析了各地层岩性在各类立地类型组的分布关系;然后利用敏感性系数SC,分析了研究区内崩塌滑坡对地层岩性的敏感性,根据区域实际情况将敏感性系数划分为4个等级,其中极敏感区占研究区的29。
2.16 The brief target oil and gas zone are from 2300 to 2500 meters. The formation is:sand, sand-stone, shale cross.
主要目的油气层在2300到2500米，其地层岩性为：砂岩、砂砾岩和泥岩互层。
a relation between the fossil content of a stratum and its lithology
地层所含的化石及地层岩性间的关系
Difficulties and Countermeasures of Reservoir Prediction of Lithology Trap in Ludong Stratum
鲁东地层岩性圈闭储层预测中的难点与对策
Eogene Sequence Stratigraphy and Stratigraphic and Lithologic Reservoirs Prediction in Liaohe West Depression
辽河西部凹陷古近系层序地层与地层岩性油气藏预测
Characteristics of Sequence Stratigraphy of Depression Basin and Distribution of Litho-strati-Reservoir;
坳陷湖盆层序地层特征与岩性-地层圈闭分布
Distribution and structural fabric features of mudstone interlayer of rock salt in underground gas storage
盐岩地下储气库泥岩夹层分布与组构特性研究
Fuzzy evaluation on surrounding rock stability of the layered rock mass underground cavern
层状岩体地下洞室围岩稳定性的模糊评价
Characteristics research on drilled soft rocks and similar simulation of soft rock layer
针对钻进的软岩特性研究及软岩地层相似模拟
RESEARCH ON TIME EFFECT OF ROCK WEAKENING BY WATER-ROCK INTERACTION OF REDBEDS IN SICHUAN BASIN
四川盆地红层水岩作用岩石弱化时效性研究
Stratification of rocks into beds.
层理岩石层理形成地层
The Geophysical Response and Exploration Principle on Litho-Stratigraphic Reservoir
岩性地层油气藏储层地球物理响应与勘探原理
Experimental Research on the Effect of the Red Beds' Rock-Water Interaction in Sichuan
四川红层地区水—岩作用时效性研究
The principal direction of small-scale movement is from a shale or clay to a sandstone or other permeable bed.
小范围运动主要从页岩或粘土岩向砂岩或其他渗透性地层中运动。
Sequence Stratigraphy of Paleogene and Distribution of Litho-straral Traps in Favorable Exploration Zones of Yitong Graben;
伊通地堑古近系层序地层学分析及重点区岩性地层圈闭分布规律
Research and Applicationon of Engineering Geological Properties of Overlying Strata of the Coal Seam Beneath Unconsolidated Layers;
近松散层煤层覆岩工程地质性质研究与应用
Sequence Stratigraphy Research and Stratigraphic Traps Recognition in Large-scale Depression of Lacustrine Basin;
大型坳陷湖盆层序地层学研究及岩性地层圈闭识别
Regional Sequence Stratigraphic Correlation and Predication of Favorable Lithologic & Stratigraphic Traps Zones for Palaeogene in Jiyang Depression;
济阳坳陷古近系区域层序地层对比与岩性—地层圈闭有利区带预测
Sequence Stratigraphy Research and Lithologic-Stratigraphic Trap Prospective Area Prediction in Gentle Slope of Depression Basin;
坳陷湖盆缓坡层序地层学研究与岩性地层圈闭有利区带预测