钻井提速用振动冲击工具研究进展

振动冲击工具作为降本增效的有效手段之一,正在得到行业内的广泛认同和重视。本文通过详细列举轴向冲击器、扭转冲击器和复合冲击器等工具的最新研究进展,可以看出振动冲击工具通过合理利用泥浆水力能量并将其转化为冲击破岩能量,有效提高了破岩效率,改善了钻头破岩环境,降低了破岩阻力。并根据现场应用情况来看,可以不同程度地提高钻井过程中的机械钻速,缩短钻井周期。     

螺杆钻进工艺在青海共和干热岩GR1钻井中的应用

本文重要介绍了转盘(顶驱)+螺杆钻具复合钻进工艺在干热岩钻井中的应用。为进一步提高干热岩钻井施工效率和减少孔内事故,在青海共和干热岩GR1井进行了转盘+螺杆钻具复合钻进应用,根据现场高温井况下螺杆钻具的工作特性,改进优选了螺杆钻具的耐高温橡胶和转子定子的配合间隙,是螺杆钻具复合钻进工艺在深孔高温干热岩钻孔(孔深3705m,孔底温度236℃)施工的首次成功尝试,并取得了良好效果,经受住了硬岩和高温的考验,为进一步改进螺杆钻具在高温井况下的应用提供了宝贵的现场施工经验,也将为我国干热岩科学钻探与深部地热资源勘探提供新的技术支撑。     

双管双动取心钻具异径接头的改进

介绍了在河北衡水水文地质科学钻探中对双管双动取心钻具异径接头所做的改进及取得的效果。     

Array processing-a new method to detect and correct errors on array resistivity logging tool measurements

In recent years more and more multi-array logging tools, such as the array induction and the array lateralog, are applied in place of conventional logging tools resulting in increased resolution, better radial and vertical sounding capability and other features. Multi-array logging tools acquire several times more individual measurements than conventional logging tools. In addition to new information contained in these data, there is a certain redundancy among the measurements. The sum of the measurements actu- ally composes a large matrix. Providing the measurements are error-free, the elements of this matrix show certain consistencies. Taking advantage of these consistencies, an innovative method is developed to de- tect and correct errors in the array resistivity logging tool raw measurements, and evaluate the quality of the data. The method can be described in several steps. First, data consistency patterns are identified based on the physics of the measurements. Second, the measurements are compared against the consis- tency patterns for error and bad data detection. Third, the erroneous data are eliminated and the measure- ments are re-constructed according to the consistency patterns. Finally, the data quality is evaluated by comparing the raw measurements with the re-constructed measurements. The method can be applied to all array type logging tools, such as array induction tool and array resistivity tool. This paper describes the method and illustrates its application with the High Definition Lateral Log (HDLL, Baker Atlas) instru- ment. To demonstrate the efficiency of the method, several field examples are shown and discussed.     

SSZ-1型双管双簧海底振动取心钻具

针对海底振动取样的一些特殊情况,介绍了自行研制的适用于海底振动取样的SSZ－1型双管双簧取心钻具，分析了其结构原理及对海底取的适应性。     

A new exploration tool: Quantitative core characterization

We will describe a new laboratory system which was designed to be highly automated and portable while maintaining quality. Driving this design was the recognition of the temporal dependence of physical properties. It becomes apparent that some sedimentary rocks, particularly shales, degrade and disaggregare so completely that mechanical or elastic properties cannot be measured. This temporal dependence displays a time scale much shorter than normal weathering but greater than the time for stress relief. A system was designed to permit field characterization of freshly recovered core material. A benefit of automation and portability is a marked increase in measurement efficiency. The attributes of this system permit rapid characterization of a large number of fresh cores in remote, frontier exploration areas. This feature can significantly reduce prospect evaluation time. Statistically significant rock property databases can be created in a short period of time.     

淮北煤矿大口径排水孔施工技术

着重论述了淮北煤矿大口径排水钻孔的施工方法及成井工艺。采用满眼钻具防斜，确定上、中、下扶正器安装的最佳位置，利用喷射钻进提高钻进效率，利用管底逆止阀浮力塞解决下管及注浆的难题。     

Cycladophora davisiana (Radiolarian) in the Bering Sea during the late Quaternary: A stratigraphic tool and proxy of the glacial Subarctic Pacific Intermediate Water

The Bering Sea, located in the Subarctic Northern Pacific Ocean, plays an important role in the global carbon cycle and modern and past global climatic sys-tems, which originates from a very effective biological pump, indicating much higher biogenic opal produc-tion than calcium carbonate[1]. Measured biological particular fluxes show that the flux in the Bering Sea is twice over that in the open ocean. Thereby, the Ber-ing sea is thought as a CO2 sink[2]. At the same time, the Bering Sea…     

岩土锚固技术在地质灾害防治工程中的应用

针对我国地质灾害发生量大面广的特点，介绍了岩土锚固技术在地灾防治工程施工中的应用技术措施，分析了地灾防治工程施工中遇到的特殊地质环境条件。在对复杂地层进行分析分类的基础上，分析了工程措施对造成地层复杂的影响因素，提出了克服复杂地层钻孔施工难度大应采取的施工工艺方法和技术措施，介绍了选择施工设备及机具的一般原则，对地灾防治工程施工具有一定的指导意义。     

对城市活断层探测项目中地震地质数据建模的探讨

在城市活断层探测项目中,基于地震地质和活动构造研究的数据模型研究是相关应用领域中的重要问题。本文依据"中国地震活动断层探测技术系统"规程应用统一建模语言讨论和建立了地震地质数据模型,着重论述了地震地质数据模型与活动断层探测相关数据的组织方法,给出了地震地质基于ArcGIS的UML模型的空间和属性类结构图、类关系图表。在此基础上分析了地震地质UML模型的特点。