公开(公告)号：US20180231477A1

公开(公告)日：2018-08-16

申请号：US15685732

申请日：2017-08-24

Applicant: Saudi Arabian Oil Company

Inventor： Dong kyu Cha ,  Sultan Enezi ,  Mohammed Al Otaibi ,  Ali Abdallah Al-Yousef

IPC: G01N23/04 ,  G01N33/24 ,  H01J37/147

CPC classification number: G01N23/046 ,  G01N1/28 ,  G01N23/225 ,  G01N33/24 ,  H01J37/1478 ,  H01J2237/049 ,  H01J2237/21 ,  H01J2237/31749

Abstract: A process for the preparation and imaging of a sample of rock from an oil and gas reservoir is provided. A sample of reservoir rock may be obtained, such as from a core sample obtained using a core sampling tool inserted in a wellbore extending into an oil and gas reservoir. A photoresist may be deposited on the surface of reservoir rock sample to form a homogenous layer. The photoresist-coated surface of the reservoir rock sample may be imaged using a focused ion beam (FIB). The photoresist protects the pores and other surface features of the rock from damage or implantation by the FIB ion beam and thus minimizes the curtain effect in the resulting images.