Pressure coring, in-situ cores, core transfer under pressure

压力取芯、原位取芯、压力下取芯

• 批准号: 86484364
• 负责人: Professor Dr. Wolfgang H. Müller
• 金额: --
• 依托单位: Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum (GFZ)
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/86484364?language=en
• 关键词: Pressure; coring; situ; cores; core

A core sample, recovered from beneath the land or sea floor, is no longer in pristine condition, due to the enormous pressure change while moving it to the surface, from great depths to atmospheric conditions. As a result mechanical, physical, and chemical properties as well as living conditions for microorganisms of the deep biosphere are significantly altered. In order to investigate highly instable gas hydrates, which decompose under pressure and temperature change, a system to recover and investigate pressure cores under in-situ conditions has been developed within an EU funded project since 1997: HYACE -HYdrate Autoclave Coring Equipment. The next logical step of development is extending the applicability of the pressure coring system to pressure related phenomena other than gas hydrates. Possible future applications include, but are not limited to, research in shales and other tight formations, CO2-sequestration, oil and gas exploration, coalbed methane, and microbiology of the deep biosphere. In order to meet the corresponding requirements and to incorporate the experiences from previous expeditions it is necessary to: First, redesign the pressure coring system in order to adapt it to the new applications. Second, utilize synergy effects with the ongoing Project COMPOSE and Third, manufacture and test the new system.

从陆地或海底下找到的岩心样本不再处于原始状态，因为在将其从极深的地方转移到大气条件下的表面时，压力发生了巨大的变化。其结果是，生物圈深层微生物的机械、物理和化学性质以及生存条件都发生了显著变化。为了研究在压力和温度变化下分解的高度不稳定的天然气水合物，自1997年以来，在一个由欧盟资助的项目中开发了一种在现场条件下回收和调查压力岩心的系统：HYACE-水合物蒸压取心设备。发展的下一个合乎逻辑的步骤是将压力取心系统的适用范围扩大到天然气水合物以外的与压力相关的现象。未来可能的应用包括但不限于页岩和其他致密地层的研究、二氧化碳封存、石油和天然气勘探、煤层气以及深层生物圈的微生物学。为了满足相应的要求并吸收以前探险的经验，有必要：首先，重新设计压力取心系统，使其适应新的应用。第二，利用与正在进行的项目组合的协同效应；第三，制造和测试新系统。