High-temperature-resistant oil-based drilling fluid consolidation plugging material for petroleum drilling and use method thereof

• Main Authors: DU HELI, HU BIN
• Format: Patent
• Language: Chinese; English
• Published: 20.02.2024
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MINING; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention discloses a high-temperature-resistant oil-based drilling fluid consolidation plugging material for petroleum drilling and a use method thereof. The high-temperature-resistant oil-based drilling fluid consolidation plugging material comprises the following components in parts by mass: 5-50 parts of an acid-soluble material, 0.05-1 part of a wetting agent, 5-50 parts of a density regulator, 0.5-20 parts of a fiber material and 5-30 parts of water-insoluble and oil-insoluble resin powder, the curing temperature of the water-insoluble and oil-insoluble resin is greater than or equal to 120 DEG C, the water-insoluble and oil-insoluble resin is carried by an oil-based drilling fluid (diesel oil, white oil or a water-in-oil emulsion), the water-insoluble and oil-insoluble resin is matched with other plugging materials to enter a leakage gap to form a filter plug or a filter cake, meanwhile, the filter plug or the filter cake is bonded into a whole under the action of leakage pressure difference, and t