Engineering Study of Televiewer Possibilities for a Deep SeaWireline Re-Entry Probe

深海有线再入探测器电视观众可能性的工程研究

• 批准号: 8817592
• 负责人: Fred Spiess
• 金额: $ 3.84万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-02-01 至 1991-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8817592&HistoricalAwards=false
• 关键词: Engineering; Study; Televiewer; Possibilities; Deep

This is an ocean engineering proposal to perform a feasibility study of the integration of a borehole televiewer (BHTV) with a borehole wireline re>.>entry system. The proposers have received previous funding from NSF and DARPA (APL/JHU) to develop the capability to re.enter boreholes drilled into the seafloor utilizing a deep sea vehicle supported by an electromechanical cable (wireline). This proposal is to perform the preliminary engineering studiesto determine how a BHTV could be integrated into the re.entry vehicle. BHTV's are acoustic devices that scan the inner walls of drill holes. The acoustic signals are converted into imagesthat can be used to interpret the sedimentary and metamorphic layering as well as the shape of the hole (ellipticity and breakouts). These images can then be used for both scientific and operational purposes. Interpretation of the hole shape and breakouts can be used to determine stress and direction of stress within the drilled section. The status of hole condition and locations of various layers is also useful operational information since it may help to locate areas that may be in question for subsequent measurement and may indicate whether a certain toll would be useful in a particular location. In an effort to improve reliability over existing BHTV's, proposers will also investigate the basic sensor design to determine if the standard acoustic narrow beam rotating headcan be replaced by multiple, simultaneously monitored non>.>rotating preformed beams. If proven feasible, subsequent proposal(s) would be expected for the further design, construction and testing of the system. It boreholes with re>.>entry cones including those in the Atlantic and Pacific Basin.

这是一项海洋工程提案，旨在对钻孔电视观看器 (BHTV) 与钻孔电缆重新进入系统的集成进行可行性研究。 提案者此前已获得 NSF 和 DARPA (APL/JHU) 的资助，以开发利用机电电缆（钢丝绳）支持的深海航行器重新进入海底钻孔的能力。 该提案旨在进行初步工程研究，以确定如何将 BHTV 集成到再入飞行器中。 BHTV 是扫描钻孔内壁的声学设备。 声信号被转换成图像，可用于解释沉积层和变质层以及孔的形状（椭圆度和破裂）。 这些图像随后可用于科学和操作目的。 对孔形状和破裂的解释可用于确定钻孔部分内的应力和应力方向。 孔状况的状态和各层的位置也是有用的操作信息，因为它可以帮助定位后续测量可能存在问题的区域，并且可以指示特定收费在特定位置是否有用。 为了提高现有 BHTV 的可靠性，提议者还将研究基本传感器设计，以确定标准声学窄波束旋转头是否可以替换为多个同时监控的非旋转预制波束。 如果证明可行，预计将提出后续提案以进一步设计、建造和测试系统。它钻孔有重返锥体，包括大西洋和太平洋盆地的重返锥体。