STORAGE-TYPE PRECISE QUANTITATIVE INJECTION SYSTEM FOR INJECTION OF UNDERGROUND OIL OR GAS WELL OPERATING AGENT AND INJECTION METHOD THEREOF

摘要

A storage-type precise quantitative injection system for injection of an underground oil or gas well operating agent and an injection method thereof. The injection system comprises an injection tube (3-2) and overground pressurizing equipment. The injection tube is provided with one or more sets of injection units therein. Each set of the injection units comprises an operating agent container (3-7) having a variable volume. The overground pressurizing equipment is configured to generate a pressure acting on the operating agent container (3-7) having the variable volume so as to expel an operating agent (3-8). The injection method adopts the storage-type precise quantitative injection system using the underground oil or gas well operating agent (3-8), and injects a fixed amount of the operating agent (3-8) into a target location in the underground well. By injecting in advance the fixed amount of the operating agent into the operating agent container, the injection system can inject an accurate and fixed amount of the operating agent and ensure accuracy of an injection amount of the operating agent. The injection method can inject an accurate amount of the operating agent into the target location, providing accuracy of the injection amount and accuracy of the injection location and ensuring a favorable injection effect.