Jones Christopher Michael, Pelletier Michael T, Atkinson Robert, Shen Jing, Moore Jeff, Anders Jimmy, Perkins David L, Myrick Michael L
Halliburton Energy Services, 3000 North Sam Houston Pkwy E, Houston, Texas 77032, USA.
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA.
Rev Sci Instrum. 2017 Jul;88(7):073101. doi: 10.1063/1.4985545.
An instrument is presented that is capable of measuring the optical spectrum (long-wave ultraviolet through short-wave mid-infrared) of fluids under a range of temperature and pressure conditions from ambient pressure up to 138 MPa (20 000 psi) and 422 K (300 °F) using ∼5 ml of fluid. Temperature, pressure, and density are measured in situ in real-time, and composition is varied by adding volatile and nonvolatile components. The stability and accuracy of the conditions are reported for pure ethane, and the effects of temperature and pressure on characteristic regions of the optical spectrum of ethane are illustrated after correction for temperature and pressure effects on the optical cell path length, as well as normalization to the measured density. Molar absorption coefficients and integrated molar absorption coefficients for several vibrational combination bands are presented.
本文介绍了一种仪器，该仪器能够在从环境压力到138兆帕（20000磅力/平方英寸）以及422开尔文（300华氏度）的一系列温度和压力条件下，使用约5毫升流体测量流体的光谱（从长波紫外线到短波中红外）。温度、压力和密度可实时原位测量，通过添加挥发性和非挥发性成分来改变成分。报告了纯乙烷条件的稳定性和准确性，并在对温度和压力对光学池路径长度的影响进行校正以及对测量密度进行归一化之后，说明了温度和压力对乙烷光谱特征区域的影响。给出了几个振动组合带的摩尔吸收系数和积分摩尔吸收系数。
