Imaging the Morrow A Sandstone Using Shear Wave VSP Data, Postle Field, Oklahoma

Table 1

Physical and elastic properties of the Morrow shale and the Morrow A sandstone from well log data (well HMU 24-4).

Properties	Morrow shale	Morrow A sandstone	Change from Sh to Sst
𝑉P (m/sec)	3335	3875	+16.21%
𝑉S (m/sec)	1518	2279	+50.13%
𝑉P/𝑉S	2.20	1.70	−22.59%
𝜌 (gm/cm^3)	2.57	2.44	−5.01%
𝑍P	8571	9462	+10.38%
𝑍S	3901	5563	+42.60%