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- foams drilling coring 泡沫钻孔取芯
- This machine is the necessary equipment of foam peeling machine. it is mainly used for round foam drilling. 这种机器是泡绵圆切机的配套设备，主要用于圆柱状泡绵的钻孔加工。
- This paper outlines the formulation tests and properties of light weight circulating foam drilling fluid. 简要介绍了低密度可循环泡沫钻井液的配方试验及性能特点。
- The rheologic model of three-phase foam drilling fluid can be optimized with grey correlation analysis method. 三相泡沫钻井液流变模式可通过灰色关联分析法进行优选。
- The formula, properties and applications of cyclable foam drilling &completion fluids in underbalanced drilling in Luo 151 11 Well are introduced. 介绍了可循环泡沫钻井完井液的配方、性能及在罗151-11井欠平衡压力钻井中的应用情况。
- On the basis of well, drilling core and test data, second well interpretation model of physical property of reservoir bed had been built. 基于测井、取心、测试等资料，建立了储层“四性”参数的二次测井解释模型；
- Meanwhile, the gas-liquid ratio for foam drilling or gas-filled underbalanced drilling in normal pressure formations is analyzed. 同时分析了在常压地层进行泡沫或充气欠平衡压力钻井时所需的气液比。
- The structure, work principle and character of continental scientific drilling core orientation drilling tools are described. 阐述了大陆科学钻探岩芯定向钻具的结构、工作原理和特点;
- The authors emphasize the role of geology model and constrain the seismic interpretation according to the data from drilling core and well logging. 研究工作强调了地质模型的作用,并用岩芯的资料及单井的沉积相分析来约束地震解释。
- During the stabilized foam drilling in shale formation,an inhibitive is often added into the circulating fluid to prevent wellbore collapsing and stick. 在泥页岩地层进行稳定泡沫钻井施工时,为防止地层坍塌和卡钻,通常在循环流体中要加入抑制剂。
- A model for expressing the change of backscattering flux of foam drilling fluid with time was established according to the optics property of foam drilling fluid. 根据泡沫钻井液的光学性质,建立了后向散射光强度随时间变化的关系模型,并进一步提出了泡沫比表面积的概念。
- According to outcrop research, drilling core analysis, and sand distributed system drawing, we analyzed the lower member of Zhiluo Formation, northeastern Ordos basin. 作者通过露头调查、钻孔岩心分析和砂分散体系制图，对鄂尔多斯盆地东北部直罗组下段进行了成因分析。
- ZHANG Rui,WANG Rui-he,QIU Zheng-song,et al.Stability evaluation of foam drilling fliud using light backscattering theory[J].Acta Petrolei Sinica,2005,26 (1):105-108. [5]张锐;王瑞和;邱正松;等.;利用光散射原理评价泡沫钻井液的稳定性[J]
- Test results show that by adding suitable amount of polyglycol and temporary plugging agent in the foam drilling fluid, the permeability recovery increases from 66. 实验结果表明;泡沫钻井液中加入适量暂堵剂和聚合醇后;渗透率恢复值从66.;54%25增加到84
- Petrology, Sedimentology, Palaeogeography, Tectonics, Paleontology and Stratigraphy were the guide of this paper and the data of drill core, logging were the research criterion. 本论文是以岩石学、沉积学、古地理学、构造地质学、古生物学和地层学理论为指导，以钻井岩心、测井资料为依据，进行本论文的研究工作。
- The factors influencing density of foams are discussed and calculating formula of hydrostatic pressure are derived, which can be easily used to evaluate hydrostatic pressure in foam drilling. 讨论了泡沫质量和气体压缩性对泡沫密度的影响，推导出了泡沫钻井液静液柱压力计算式，可以方便地估算泡沫钻井时的静液柱压力。
- Through compaction hardness and analog shear rock failure test to drilling core, the paper discusses the possibility of discriminating downhole rock type by using rock acoustic emission frequency. 通过对钻井取心岩样压入硬度及模拟剪切的破岩试验,探寻利用岩石的声发射频率来判别井下岩石类型的可能性。
- These data reveal a sandwich-like structure for the HPE in the drilling core in which relatively high heat production sections are enclosed by relatively low heat production sections. 该结构可能代表着高压-超高压变质地体中的典型HPE结构，比大型花岗岩岩基的HPE结构更复杂，与传统的HPE指数衰减分布模式不吻合。
- Because of the low penetration rate and loss of fault in block 32 and 53 in YEMEN,the problem of loss was successfully salved by adopting the foam drilling fluid and accelerated the drilling speed in hard formation by applying the air hammer. 也门 32区块和 5 3区块地层可钻性差、存在断层漏失 ,采用泡沫钻井液有效地解决了井漏问题 ,应用空气锤钻井加快了硬地层的钻进速度 ;
- The Application And Experimentation Prospect for DaTong coalfield to resource of Permo-carboniferous period By Air drilling, Foam drilling, DTH hammer drilling with experience of drilling techniques. 摘要通过对空气钻进、空气泡沫钻进工艺和空气潜孔锤钻进工艺的生产试验和推广应用，为大同煤田石炭、二叠纪煤炭资源勘探探索钻探施工的成功经验。
