Jagadisan Archana, Chen Jin-Hong, Althaus Stacey M
Aramco Service Company, Aramco Research Center-Houston, 16300 Park Row, Houston, Texas 77084, United States.
ACS Omega. 2022 Mar 7;7(11):9636-9641. doi: 10.1021/acsomega.1c07034. eCollection 2022 Mar 22.
Drill cuttings are available continuously over the entire depth of any drilled wells. The use of drill cuttings to obtain petrophysical data can add a significant value in formation evaluation. An update to the previous study is presented using NMR and Archimedes principle to determine petrophysical properties including porosity, bulk density, and matrix density from drill cuttings of organic-rich mudrock formations. In the original published method, sonication was used to clean and saturate the drill cutting samples. In this improved method, particulate samples were saturated using both sonication and pressure injection methods. The obtained results were compared with accepted lab measurement techniques. Results show that pressure saturation of particulate samples can provide accurate results of petrophysical properties. Obtaining reliable petrophysical data from drill cuttings can provide continuous and quasi-real-time data for the formation evaluation of reservoirs and can effectively reduce costs by reducing or eliminating expensive formation evaluation methods.
在任何已钻井的整个深度范围内，钻屑可连续获取。利用钻屑获取岩石物理数据能够在地层评价中增添显著价值。本文呈现了对先前研究的更新内容，即运用核磁共振（NMR）和阿基米德原理，从富含有机质泥岩地层的钻屑中确定包括孔隙度、体积密度和基质密度在内的岩石物理性质。在最初发表的方法中，采用超声处理来清洁和饱和钻屑样品。在这种改进方法中，颗粒样品通过超声处理和压力注入方法进行饱和。将所得结果与公认的实验室测量技术进行了比较。结果表明，颗粒样品的压力饱和能够提供准确的岩石物理性质结果。从钻屑中获取可靠的岩石物理数据可为储层的地层评价提供连续且准实时的数据，并可通过减少或消除昂贵的地层评价方法有效降低成本。
