保压取样钻具内岩心温压采集器的研制与应用
投稿时间:2021-10-09  修订日期:2022-04-21  点此下载全文
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作者单位邮编
邓都都 北京探矿工程研究所 100083
基金项目:天然气水合物勘查开发技术联合研究
中文摘要:在绳索取心钻探过程中,井底温度与压力的实时测量,有助于改进取心工艺,提高岩心的采取率;同时岩心在井底的原位测量数据对于了解岩心的物理特性有着重要意义,这一点在海域天然气水合物勘探中尤为明显。本文主要介绍了一种内置于保压取样钻具中的温压采集器的结构及其工作原理。该采集器采用干电池供电,单次工作时间超过72h,能够采集与存储整个取样过程中岩心管内的温度与压力参数,与电脑端连接后就能得到全部数据。通过搭载海洋地质十号钻探船,该采集器完成了一个回次的海试试验,得到了整个绳索取心过程的温度与压力数据。经过分析,收集到的数据与实际取心工艺过程相符,数据平稳可靠。
中文关键词:绳索取心,保压钻具,温压采集,原位测量,海域天然气水合物
 
Development and Application of Temperature and Pressure Collector in Pressure Core Sampler
Abstract:The real-time measurement of downhole temperature and pressure is helpful to improve the coring process and increase the rate of core recovery during wireline coring drilling. At the same time, the downhole in-situ measurement data is of great significance to understand the physical characteristics of core, especially in the exploration of gas hydrate in the sea. The structure and working principle of temperature and pressure collector are introduced in this paper. The collector is powered by dry battery and can work for more than 72h at a time. It can collect and store temperature and pressure parameters in the core pipe during the whole sampling process. The data can be obtained after connecting with the computer. The collector completed a test and obtained temperature and pressure data for the entire wire-line coring process on the Marine Geology 10 drilling vessel. After analysis, the data is consistent with the actual coring process, and the collected data is stable and reliable.
keywords:wire-line core, pressure core sampler, temperature and pressure collection, in-situ measurement, design and manufacture
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