US 12,421,447 B2
Fluorescent metal organic frameworks (MOFs) for drilling depth correlation and waterfront mapping
Vera Solovyeva, Moscow (RU); Nouf Mohammed Al-Jabri, Dammam (SA); and Alberto F. Marsala, Venice (IT)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Appl. No. 18/043,834
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
PCT Filed Jun. 9, 2022, PCT No. PCT/RU2022/000188
§ 371(c)(1), (2) Date Mar. 2, 2023,
PCT Pub. No. WO2023/239252, PCT Pub. Date Dec. 14, 2023.
Prior Publication US 2024/0294824 A1, Sep. 5, 2024
Int. Cl. C09K 8/86 (2006.01); C09K 11/06 (2006.01); E21B 47/04 (2012.01); E21B 47/11 (2012.01); E21B 49/00 (2006.01)
CPC C09K 8/86 (2013.01) [C09K 11/06 (2013.01); E21B 47/04 (2013.01); E21B 47/11 (2020.05); E21B 49/005 (2013.01); C09K 2208/10 (2013.01); C09K 2211/18 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A composition of matter comprising:
a fluorescent metal-organic framework (MOF);
a protective material; and
a drilling fluid, wherein:
the MOF is configured to attach to formation cuttings; and
the protective material is selected from the group consisting of a porous silica, a porous ceramic and a polymer, wherein:
when the protective material is the porous silica or the porous ceramic, the MOF is entrapped inside pores of the porous silica or the porous ceramic; and
when the protective material is the polymer, the polymer is grafted over a surface of the MOF.