发明名称 |
EFFECTIVE POROSITY DETERMINATION FOR TIGHT GAS FORMATIONS |
摘要 |
A disclosed effective porosity determination method for tight gas formations includes: obtaining a core sample sealed in a pressure-maintaining core vault during transport out of the borehole; coupling the core vault to a collection chamber; based at least in part on measured pressure, temperature, and fluid volumes in the collection chamber, deriving the number of moles of gas retrieved with the core sample; and combining the number of moles with a downhole pressure, a downhole temperature, and a downhole core sample volume to determine an effective porosity of the tight gas formation. A system embodiment includes: a coring tool having a core vault with a seal to provide pressure-preserved transport of a core sample from a tight gas formation; a collection chamber that attaches to the core vault to measure volumes of fluids and gas; and a processing unit that responsively determines an effective porosity of the tight gas formation. |
申请公布号 |
EP3068971(A1) |
申请公布日期 |
2016.09.21 |
申请号 |
EP20150736936 |
申请日期 |
2015.01.13 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
QUINTERO, LUIS, F.;WESTACOTT, DONALD |
分类号 |
E21B49/02;E21B47/06 |
主分类号 |
E21B49/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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