High solid phase drilling fluid filter cake removal treating fluid

A high solid phase drilling fluid filter cake removal treating fluid is applied to the technical field of petroleum drilling and completion. The invention comprises three treating fluids, namely cleaning breaking liquid, dissolution breaking liquid and post cleaning liquid; the cleaning breaking liquid comprises the following components: dimethylbenzene, petroleum ether, nonylphenol polyoxyethylene ether (OP-4), nonylphenol polyoxyethylene ether (OP-10), 8-10 alcohol polyoxyethylene ether, ammonium persulphate, potassium chloride and water; the dissolution breaking liquid comprises the following components: acetic acid, hydrochloric acid, hydrofluoric acid, inhibiter SA1-3, ammonium citrate and water; the post cleaning liquid comprises the following components: dimethylbenzene, petroleum ether, nonylphenol polyoxyethylene ether (OP-4), nonylphenol polyoxyethylene ether (OP-10), 8-10 alcohol polyoxyethylene ether, potassium chloride and water. By cleaning breaking, dissolution breaking and post cleaning in three phases, drilling fluid filter cake is removed, the dissolution ratio of solid phase in the filter cake is greatly increased, and the dissolution ratio of organic positive glue drilling liquid filter cake is increased by 3.5 times, thus effectively dredging flow passage of reservoir stratum in immediate vicinity of horizontal well.