Method for eliminating fluid loss during construction of oil and gas wells
AssigneeLimited Liability Company “Gr Petroleum”
InventorVitalii Vyacheslavovich SERGEEV
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Abstract
The invention relates to the oil and gas industry, and more particularly to techniques for eliminating fluid loss during the drilling of oil and gas wells. The method includes successively pumping a blocking agent and a displacement fluid into a formation. The blocking agent is comprised of an emulsion-suspension system containing diesel fuel or processed oil from a central processing facility, an emulsifier, a colloidal solution of nanoparticles of silicon dioxide, dry amorphous silicon dioxide, microparticles of ilmenite or trimanganese tetraoxide, and an aqueous solution of calcium chloride or potassium chloride. The displacement fluid is comprised of an aqueous solution of calcium chloride or potassium chloride.
Claims7
A method for eliminating drilling fluid loss during construction of oil and gas wells, comprising successive pumping a blocking agent and a displacement fluid into a formation, where an emulsion-suspension system is used as the blocking agent and comprises diesel fuel or treated oil from a central processing facility, an emulsifier, a colloidal solution of nanoparticles of silicon dioxide, dry amorphous silicon dioxide, microparticles of ilmenite or trimanganese tetraoxide, an aqueous solution of calcium chloride or potassium chloride;
- and an aqueous solution of calcium chloride or potassium chloride is used as the displacement fluid.
Dependencies are inferred from the claim text.