国家/地区 美国（2）
IPC部 C（2）
IPC大类 C09（2） E21（2）
IPC小类 C09K（2）
IPC E21B047/11（2）
发明人
公开年 2023（2）
申请年
专利权人 ARAMCO SERVI.（2） SAUDI ARABIA.（2）

Composition of matter used for determining the drilling depth of various drill cuttings, comprise core-shell quantum dot particle having an inorganic core and an organic shell, and drilling fluid, where inorganic core is cadmium-containing chalcogenide.

MARSALA A F, SOLOVYEVA V, ALJABRI N M

Coated proppant used for protecting proppant particle, comprises proppant particle, surface copolymer layer surrounding proppant particle, where surface copolymer layer comprises copolymer of monomers chosen from e.g. styrene, methyl methacrylate, ethylene, propylene, butylene, and acrylamides.

LI W, ALSHARAEH E, KRISHNAN M R