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.

从陆地或海底下方回收的核心样品不再处于原始状态，因为在将其移动到地面时，从巨大的深度到大气条件，其压力发生了巨大变化。结果，深层生物圈的微生物的机械，物理和化学特性以及生物条件得到了显着改变。为了调查在压力和温度变化下分解高度稳定的气体水合物，自1997年以来，在欧盟资助的项目中已经开发了一种在原位条件下恢复和调查压力核心的系统：Hyace -Hyace -Hydrate Autoclave Coring设备。开发的下一个逻辑步骤是扩展压力加压系统对压力相关现象的适用性。未来可能的应用包括但不限于页岩和其他紧密地层的研究，二氧化碳，石油和天然气勘探，煤层甲烷以及深生物圈的微生物学。为了满足相应的要求并纳入了以前的探险经验，有必要：首先，重新设计压力加油系统以使其适应新应用程序。其次，利用正在进行的项目组成和第三个项目制造和测试新系统的协同效应。