METHOD OF DETERMINING RESIDUAL OIL SATURATION,申请号CA19820418390-传众专利搜索

METHOD OF DETERMINING RESIDUAL OIL SATURATION

申请公布号：CA1188980(A)

申请号：CA19820418390

申请日期：1982.12.22

申请公布日期：1985.06.18

申请人：

MOBIL OIL CORPORATION

发明人：GOURNAY, LUKE S.

分类号：E21B49/00;G01V7/06;G01V7/08;(IPC1-7):G01V1/40

主分类号：E21B49/00

摘要：<p>A METHOD OF DETERMINING RESIDUAL OIL SATURATION In a method of determining the residual oil saturation of an oil bearing formation 26, a borehole in the formation 26 is traversed with a gravimetric logging tool 10 to measure the earth's gravity at spaced locations in the borehole. The gravitational gradient of the formation 26 is then determined by comparison of the measurements of the earth's gravity at successive locations, whereafter the formation bulk density is calculated from the variation in the gravitational gradient at the successively spaced locations and from the vertical distance between the successive spaced locations. From measurements of the matrix density, water density, oil density, and fractional porosity of the formation, the calculated formation bulk density can be used to determine the residual oil saturation of the formation 26.</p>