国家/地区
IPC部 C（2）
IPC大类 C09（2）
IPC小类 C09K（2）
IPC C09K008/03（2）
发明人
公开年 2023（2）
申请年 2021（2）
专利权人

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

Inverse emulsion fluid used for e.g. offshore and on-shore drilling of natural resources from oil wells, comprises dispersed phase comprising glycerol, or mixture of glycerol and water, and continuous phase including olefin, paraffin, mineral oil, vegetable oil, animal oil and ester.

SANTOS BORGES S