公开(公告)号：US5780850A

公开(公告)日：1998-07-14

申请号：US664485

申请日：1996-06-17

Applicant: Patrick Lee DeLaune ,  Kerry Kennedy Spilker ,  Alan Cameron Wright

Inventor： Patrick Lee DeLaune ,  Kerry Kennedy Spilker ,  Alan Cameron Wright

IPC: E21B49/00 ,  G01N21/64 ,  G01N33/24 ,  G01N33/28 ,  G01V5/00

CPC classification number: E21B49/005 ,  G01N21/64 ,  G01N33/241 ,  G01N33/2823 ,  G01N2021/6417 ,  G01N2021/6421

Abstract: A method for evaluating the API gravity of a sample of underground formation includes steps of: Solvating a known volume of an underground formation sample in a known volume of a solvent which will solvate hydrocarbons; Quantitatively measuring with a changeable filter portable fluorometer the emission fluorescence of the solvated sample at a fixed excitation wavelength with measurements of emission intensities at two points; characterizing the oil by the ratio of two emission intensities obtained at a fixed excitation wavelength; determining the yield; applying regression analysis to a data base of oils to obtain an equation which results in an algorithm value; and interpreting the value of the algorithm to give a value for API gravity and estimate in-situ oil concentration.

Abstract translation: 用于评估地下地层样品的API比重的方法包括以下步骤：在已知体积的溶剂化烃的溶剂中溶解已知体积的地下地层样品; 使用可变滤波器便携式荧光计定量测量溶解样品在固定激发波长处的发射荧光，并测量两点的发射强度; 通过在固定激发波长处获得的两个发射强度的比率来表征油; 确定产量; 对油的数据库应用回归分析以获得导致算法值的方程; 并解释算法的值，给出API重力的值，并估算原位油浓度。