In the process of drilling wells, different methods should be adopted to achieve better results when encountering different geological layers.

　　1. Gypsum layer

　　Before entering the gypsum layer, the drilling fluid should be pretreated to reduce the solid phase and sticky cutting. Soda ash, calcium-removing viscosity reducer, etc. should be added in advance to remove calcium ions. , to increase the pH of the drilling fluid.

　　2. Quicksand layer

　　When encountering quicksand formations, it is necessary to increase the viscosity of the drilling fluid and seal the good section with thick mud with a viscosity greater than the 80s. Increase the bentonite content in the drilling fluid and enhance the wall-building property of the drilling fluid.

　　3. Quartz Sandstone

　　Quartz sandstone is very hard. During the drilling process, the footage is often slow, and there is a lot of slag and rock cutting, which is prone to accidents such as buried drilling. Therefore, the beating of the small water well drilling tools can be reduced to reduce the production of sand, and the addition of nitro acid-base adjuvants to the clean water can play a role in damping and lubricating, which can effectively solve the problem.