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Karst cave lost circulation 溶洞性漏失
Karst cave probing is a very important task in engineering geophysics. 摘要在工程地球物理中，溶洞探测是一项非常重要的任务。
Good location, miraculous karst landscapes and good for tourism are the features of Mashan Guling Karst Cave. 景区的开发及其研究具有重要的地质历史、艺术观赏及科学价值。
Unconformity surface, karst cave and karst landform are signs distinguishing from other reservoirs. 不整合面、溶蚀孔洞缝、岩溶地貌是其区别于其它储层的特殊标志。
There are karst caves in Guilin. 桂林有溶洞。
The deposits mainly occur lower part at silicified bodies or along dipping extent and die out of karst cave. 矿体呈似层状、透镜状、似脉状等,主要产于硅化体下部或其沿倾斜延伸位及其尖灭处。
Core flow experiment showed that plugging rate of lost circulation material was over 97% . 人造岩芯封堵实验表明,该堵漏剂封堵率达97%25以上;
That's the calcium carbonate dissolved in the groundwater deposits at the floor caused by the changing of temperature and pressure in the karst cave. 岩溶洞区含重碳酸钙的地下水,在温度、压力改变时,产生碳酸钙的沉淀。岩溶洞穴内自洞底向上生长的为石笋。
In casing cementing of Caogu 1 Qianshan reservior, lost circulation is encountered due to growing cracked holes. 胜利油田草古1潜山稠油油藏缝洞十分发育，导致固井过程中水泥浆严重漏失。
This paper discusses elimination of disturbance, detection of air-raid shelter, check up of road surface and lining quality of channel and detection of karst cave. 文章针对消除干扰的方法、关于防空洞探测、关于公路路面检测和隧道衬砌质量检测、地下岩溶探测等内容进行了探讨。
Mao east area frequently takes place sloughing hole, pipe-stuck, lost circulation in drilling operation. 鄚东地区钻井过程中经常发生垮塌、卡钻、井漏等复杂事故。
The complex association of karst cave and fissures constitutes the reservoir space of weathering crust karst reservoirs. 复杂多变的溶蚀孔、洞、缝及其组合,构成了风化壳岩溶储层的储集空间。
Well Dina-11 was drilled in Kuche slag of Tarim Basin, and serious lost circulation took place between 5520 m to 5750 m. 迪那11井位于库车坳陷东秋立塔克构造东倾末端1号构造带上。
That's the calcium carbonate dissolved in the groundwater deposits at the top cell of the cave caused by the changing of temperature and pressure in the karst cave. 岩溶洞区含重碳酸钙的地下水,在温度、压力改变时,产生碳酸钙的沉淀。悬垂于洞顶的为石钟乳。沂水地下溶洞内石钟乳遗迹丰富,形态多样,如针、如冰凌、如玉米。
According to the properties of lost circulation in the creviced formation, this paper presented a mathematical model of the lost circulation law. 本文根据地下裂缝的漏失特性,建立了地下裂缝漏失规律的数学模型,并导出了各种流体在裂缝中的流动规律。
That's the calcium carbonate dissolved in the groundwater deposits at the fit spot caused by the changing of temperature and pressure in the karst cave. 岩溶洞区含重碳酸钙的地下水,在温度、压力改变时,产生碳酸钙的沉淀。在物理和化学条件差异处产生石耳。
That's the calcium carbonate dissolved in the groundwater deposits on the rock wall caused by the changing of temperature and pressure in the karst cave. 岩溶洞区含重碳酸钙的地下水,在温度、压力改变时,产生碳酸钙的沉淀。很多石钟乳在岩壁处形成石幔。
In Yanchang oilfield, serious lost circulation often occur during drilling in Panlong and Zichang areas, directly affect drilling rate. 延长油矿管理局在蟠龙、子长等主生产区经常遇到严重漏失井,直接影响了钻井速度。
Hydrofoil contained in springs originating from the mountain karst cave has formed some white Tosca of calcium carbonate through irradiation of sunshine. 白水台对面上柏峰下有一溶洞，古时为祭祀龙神之地，后因东巴教第二始祖“阿明什罗”在此修行，遂称为“阿明明卡”，又称“阿明灵洞”。
These key factors are analysed in this paper using pressure equalization principle, and a formula for calculating process parameters of lost circulation control is deriv... 本文采用压力平衡原理对堵漏钻柱的下入深度、顶替量及顶替排量进行了分析和推导，给出了在失返条件下水泥浆堵漏工艺参数的计算公式。