Standardized Drilling Process: Comprehensive Management from Preparation to Acceptance

Standardized Drilling Process: Comprehensive Management from Preparation to Acceptance

A standardized drilling process begins with thorough and safe site preparation. Before equipment arrives, the site must be surveyed and cleared to ensure the work area is flat, firm, and has sufficient space for machinery and piping, and a mud pit or slag removal area should be planned. Simultaneously, the well location should be accurately marked according to the design drawings, and all equipment and tools should be checked to ensure they are complete and in good condition, with safety warning signs placed appropriately. The more meticulous the preparation at this stage, the smoother the subsequent construction will be.

Entering the formal drilling stage, the principle of "smooth and orderly" should be followed. Initially, low speed and light pressure should be used, gradually increasing parameters as the drill bit smoothly enters the formation. During drilling, the operating status of the machinery, the return of mud, and changes in the hardness of the formation must be continuously observed, recorded, and adjusted promptly. After each drill pipe is drilled, drilling must be stopped and the pipe reconnected according to regulations, and the mud circulation in the borehole must be maintained to prevent stuck drill bits or drill string burial. Safety procedures must be followed when changing drill bits or handling abnormalities in the borehole.

After reaching the target depth, the crucial well completion and acceptance phase begins. This requires thoroughly cleaning the borehole to remove cuttings and mud, then smoothly lowering the pre-prepared well casing. Carefully selected filter media is then placed between the casing and the borehole wall, followed by a "well flushing" operation until the water flow is stable and the water is clear. During final acceptance, the stable water flow should be tested, the well depth and water level measured, and the water quality checked to ensure it meets requirements. Complete construction records and a final acceptance report are essential for standardized procedures and provide a basis for future maintenance.