国家/地区 中国（2） 世界知识产权组织（2）
IPC部 C（4）
IPC大类 E21（4） C09（3）
IPC小类 E21B（4）
IPC
发明人
公开年 2022（4）
申请年 2022（4）
专利权人

Well drilling plugging method for malignant leakage stratum, involves preparing delayed cross-linking type polymer gel plugging slurry on construction site, and using slurry, and pumping polymer gel leakage-stopping slurry into drill stem to fill whole drill stem.

NING X, DING B, YANG B, REN T, QIAO G, LONG H

Cementitious composite comprises modified aggregate material, where modified aggregate material is configured from fine aggregate particles pretreated with graphene oxide, where graphene oxide is further arranged as crosslinked structures that arranges for refined interfacial zone.

SHI X, ZHONG J

Composition of matter useful for lubricating a tool surface, comprises mono-facial polymer-grafted graphene particle and aqueous-based drilling fluid.

SANTRA A, THAEMLITZ C

Thickening agent comprises nanometer silicon dioxide, graphene, fluorocarbon non-ionic surfactant, cocamide betaine, olefin sulfonate, and distilled water, prepared by adding above raw materials, stirring and mixing, adding nano silicon dioxide and graphene, continuously stirring and oscillating.

GAO Q, LIU Y, HUANG H, WANG H, ZHANG Y, ZHOU D, LIU X