超声波钻探设备的研究进展及建议     

王建明  崔东茂  陆洪智 《探矿工程》2010,37(9):22-26

传统钻探技术受限于高轴向力和扭矩的需求,高功率的消耗和沉重的设备。超声波钻探作为一种新型钻探方法,弥补了传统钻探技术的诸多不足,有着广阔的应用前景。尤其在低重力、设备质量限制严格的外星探测领域体现出巨大的优势。首先介绍了超声波钻探设备的发展,然后通过分析现有的超声波钻探设备,重点分析一种外星探测方案的超声波钻探设备,总结出超声波钻探技术方法在外星探测的可行性及应用发展方向。  相似文献   

湖南郴县红旗岭钨锡矿多金属矿区钻探施工措施分析   总被引：2，自引：1，他引：1       下载免费PDF全文

叶友仁  陈洋 《探矿工程》2010,37(9):6-9

介绍了湖南郴县红旗岭钨锡矿多金属矿区的地质地层概况,对施工中所采取的钻进方法、护壁堵漏技术及防斜治斜措施进行了详细的介绍分析,并用施工效果证明了采取的相关技术措施是可行的和合理的。  相似文献   

超大口径瓦斯抽排放井施工技术     

杜贵亭 《探矿工程》2010,37(12):46-50

用钻井施工技术手段,对煤矿的瓦斯进行抽排放是降低煤矿安全风险的有效途径之一,也是对煤矿安全生产潜在风险的一种防范。通过钻井的方法,形成瓦斯抽排放井进行瓦斯的抽排放是一项既经济又快捷的有效方式,对煤矿的安全生产有着极为重要的意义。  相似文献   

偏心跟管钻具钻进的仿真分析          下载免费PDF全文

罗宏保  宋军  赵建勤  黄晓铭 《探矿工程》2010,37(11):6-8

针对偏心跟管钻具工作环境与受力作用复杂的情况,通过建立跟管钻具在地层中钻进的有限元模型,设定各种边界条件及载荷,运用有限元分析软件ANSYS 12.0对跟管钻具的钻进工况进行仿真模拟,分析钻具在钻进时与地层岩土体相互作用下的应力应变情况。根据模拟分析结果能够更清楚地了解钻具钻进时的应力状态,并对钻具的设计、优化起到指导性作用以及为钻具设计结构的合理性提供了理论依据。  相似文献   

自升式平台桩脚在含硬壳层地基中的插深分析   总被引：1，自引：0，他引：1  

李洪  邓金根  孙焱  李炎军 《海岸工程》2010,29(2):31-37

存在硬壳层的层状地基承载能力分析是自升式钻井平台桩脚插深分析的关键,但是目前对硬壳层承载能力的确定还没有成熟可行的理论计算方法。一般的针对非均质层状地基的承载力计算方法,因参数较多,计算步骤繁琐,很难广泛应用于实际的平台桩脚入泥深度分析中。文中主要介绍了存在硬壳层的层状地基承载力的分析方法与过程,根据应力扩散原理推导并做适当的简化得到硬壳层承载力修正方法。简化后的修正方法能满足一般硬壳层承载力分析的需要,并使平台插桩深度分析计算过程变得简便。通过在实际工程的应用,得到的实测结果与理论计算值也较为一致,说明了用此方法分析硬壳层地基的平台插桩是合理、实用的。  相似文献   

深水钻井液研究与评价模拟实验装置     

徐加放  邱正松 《海洋地质译丛》2010,(3):88-92

分析了我国深水钻井的现状和未来发展趋势,调研分析了深水钻井所面临的困难和深水钻井液必须具备的基本性能。在理论推导并结合实践的基础上,研制了深水低温钻井液基本性能模拟实验装置、深水钻井液水合物生成与抑制评价实验装置以及深水钻井液循环与井壁稳定模拟实验装置等,并对模拟装置的实验可行性和平行性进行了验证。实验结果表明,新研制模拟实验装置控制精度较高、实验平行性较好,能够满足深水钻井液性能测定与评价的基本要求,为我国深水钻井液技术研究奠定了一定的室内实验研究基础。  相似文献   

高平4水平井组双保钻井液技术     

胡祖彪  骆胜伟  孟凡金  陈秉炜  石仲元  金虎 《海洋地质译丛》2009,(1):110-115

高平4井组水平井主要用于开发安塞长10组油藏。针对该井组上部直罗组和富县组易坍塌、下部地层钻速相对较慢、地层易造浆的特点，研究应用了环保型聚硅酸盐-黄胞胶钻井液体系。该体系具有抑制性强、润滑和剪切稀释性好的特点，有利于安全快速钻井，对环境污染极小。通过小型配浆实验确定钻井液施工方案，中测后稀释钻井液，降低钻井液滤失量和密度，加强固相控制，使用保护油层的酸溶性暂堵剂和降滤失剂，可最大限度地保护油层。  相似文献   

Combining 2D-basin and structural modelling to constrain heat transport along the Muroto Transect,Nankai Trough,Japan     

Robert Ondrak  Christoph Gaedicke  Brian Horsfield 《Marine and Petroleum Geology》2009

The Nankai Trough located southeast of Shikoku Island, Japan, exhibits a zone of exceptionally high heat flow. In the central part of the Nankai Trough the fossil spreading centre of the Shikoku Basin is subducted beneath the southwest Japan arc. We have modelled the temperature and maturation history along the Muroto Transect reaching from the tip of the thrust zone out into nearly undeformed Quaternary and Tertiary sediments seawards of Nankai Trough. We used two balanced cross-sections defining the sections before and after overthrusting as input for 2D-basin modelling. We can show that rapid burial and overthrusting during the Quaternary in combination with a heat flow history following the cooling curve of a 15 Ma old oceanic plate is not sufficient to explain the measured maturity of organic material in the sediments. Several heat flow scenarios derived from theoretical concepts [Yamano, M., Kinoshita, M., Goto, S., Matsubayashi, O., 2003. Extremely high heat flow anomaly in the middle part of the Nankai Trough. Physics and Chemistry of the Earth, Parts A/B/C 28, 487–497.] and previous modelling approaches [e.g. Brown, K.M., Saffer, D.M., Bekins, B.A., 2001. Smectite diagenesis, pore water freshening, and fluid flow at the toe of the Nankai wedge. Earth and Planetary Science Letters 194, 97–109; Spinelli, G.A., Underwood, M.B., 2005. Modeling thermal history of subducting crust in Nankai Trough: constraints from in situ sediment temperature and diagenetic reaction progress. Geophysical Research Letters 32(L09301): doi:10.1029/2005GL022793; Steurer, J., Underwood, M.B., 2003. Clay mineralogy of mudstones from the Nankai Trough reference sites 1173 and 1177 and frontal accretionary prism site 1174. In: H. Mikada et al. (Eds.), pp. 1–37. Available from: <http://www-odp.tamu.edu/publications/190196SR/VOLUME/CHAPTERS/211.PDF>] were tested. The best match between observed maturity levels, temperature and heat flow measurements is reached for a heat flow history which initially assumes the cooling of a 15 Ma old oceanic lithosphere but is reheated to 170–180 mW/m² during the phase of rapid burial in the Quaternary. This can be achieved either by assuming the onset of hydrothermal circulation in the cooling crust or by reheating caused by off-axis volcanism at about 6 Ma [Yamano, M., Kinoshita, M., Goto, S., Matsubayashi, O., 2003. Extremely high heat flow anomaly in the middle part of the Nankai Trough. Physics and Chemistry of the Earth, Parts A/B/C 28, 487–497.].  相似文献   

Application of a proportional-integral control for the estimation of static formation temperatures in oil wells     

G. Espinosa-Paredes  A. Morales-Díaz  U. Olea-González  J.J. Ambriz-Garcia 《Marine and Petroleum Geology》2009

A strategy based on proportional-integral (PI) feedback control was applied to solve an inverse heat transfer problem for estimating static formation temperatures (SFTs) from logged temperatures in oil wells. The PI control feedbacks the error between logged and simulated temperatures during the shut-in time process, existing SFT proposal. Thus, mathematically speaking an inverse heat transfer problem was solved in this way, since SFT represents the initial conditions (which are unknown) to solve the partial differential equations governing the heat transfer process in the wellbore-formation system. The mathematical model considers transient convective heat transfer due to circulation losses to the rock surrounding a well. The methodology was tested analyzing two oil wells (MB-3007 and MB-3009) from the Gulf of Mexico and results were compared against two classic methods. The method presented in this work needs only one temperature measurement for each fixed depth to estimate the SFT.  相似文献   

Research and development on foam breaking and recycling technology in air-foam drilling     

CAO Pinlu  ZHANG Jincheng  WU Xia  HUANG Jinyun Institute of Drilling Engineering Technology  Zhongyuan Petroleum Exploration Bureau  Puyang  Henan  China 《东北亚地学研究》2009,(4):204-209,214

In recent years, air-foam combining the advantages of both liquid and air drilling has been utilized as a drilling medium. Air-foam drilling has proved its efficiency in numerous situations where serious problems were encountered, such as in fractured formations and depleted or high permeable zones. However, the major disadvantage of air-foam drilling system is that the foam can only be used once, so that an extremely large pit is required to contain the foam to allow sufficient room for cuttings and for the foam to dissipate. Moreover, it needs enormous volume prepared, consuming abundance of water and ingredient additives, which results in the high cost of foam drilling. The recycling foam fluid by using foam breaking technology is the only effective method to solve these problems associated with the known foam drilling. Various types of equipment and technique have been employed to suppress foam formation in biological and process equipment in foam drilling. The study described various methods of foam breaking technology, and the trend of the foam breaking technology for foam drilling is discussed.  相似文献