Anti-sloughing filtrate reducer silicon-fluorine resin compound for drilling fluid

Abstract

The invention discloses an anti-sloughing filtrate reducer silicon-fluorine resin compound for drilling fluid. The anti-sloughing filtrate reducer silicon-fluorine resin compound is characterized in that the anti-sloughing filtrate reducer silicon-fluorine resin compound is prepared from the components in percentage by mass: 50-60% of bentonite, 1-3% of galena powder, 1-5% of limestone powder, 1-5% of liquid weighting agent NaCL, 1-7% of sulfonated-pheno-formoldehyde resin, 1-5% of a polysilicon fluorine stabilizer, 1-3% of an inert filtrate reducer, 1-5% of sodium carboxymethylcellulose sodium salt, 1-3% of carboxymethyl starch, 1-8% of methylene-based polyacrylamide dry powder, 1-3% of a tackifying filtrate reducer, 1-6% of alkyl sodium sulfonate, 1-5% of potassium ammonium-based hydrolyzed polyacrylonitrile, 2-8% of sulfonated bitumen sodium salt, 2-10% of sulfomethyl lignite resin, 2-7% of a high-molecular polymer anti-collapse agent, 2-5% of an anti-swelling agent, 1-3% of a water-based heavy mud diluents, 1-5% of polyacrylamide, 1-3% of an anti-sloughing lubricant, 1-3% of an anti-high-temperature and anti-salt filtrate reducer, 1-5% of a reservoir shielding agent, 1-3% of dodecyl dimethyl benzyl ammonium chloride, 1-2% of glycerinum polyether, 1-5% of diesel oil, 1-3% of basic zinc carbonate, and 30-40 kg of extra water.

Description

Technical field: [0001] The invention belongs to the field of preparation of fluid loss reducers for drilling fluids, and in particular relates to a silicon-fluorine resin compound of an anti-slump fluid loss reducer for drilling fluids. Background technique: [0002] Drilling fluid fluid loss and filter cake formation During the drilling process, drilling fluid fluid loss is inevitable, and filter cake can be formed to protect the well wall through fluid loss. However, if the filtration loss of drilling fluid is too large, it is easy to cause shale expansion and collapse, resulting in instability of the borehole wall. In addition, when the filtration loss increases, the filter cake thickens, reducing the well diameter, causing a large torque to the rotating drilling tool, causing swabbing and pressure fluctuations during tripping, and easily causing differential pressure sticking. Therefore, proper control of fluid loss is one of the important properties of drilling fluid....