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How to deal with the soil layers encountered by water well drilling rig

Release time:

2023-12-14

Water well drilling rig manufacturers understand that when pneumatic water well drilling rigs encounter different geological layers during the drilling process, different methods should be adopted to achieve good results. Also encounter different geological layers, such as quicksand layer, gypsum layer. Once gypsum invasion occurs during the drilling process of pneumatic water well drilling rig, calcium ions can be removed by taking part in soda ash, calcium removal and viscosity reduction. At the same time, the viscosity reducer with strong calcium resistance can be used to control viscosity reduction and make up for the deficiency of materials such as fluid loss agent and anti-collapse agent.
1. gypsum layer
Before drilling the gypsum layer, pre-treat the drilling fluid of the drilling platform to reduce the solid phase and viscosity, and participate in anti-gypsum treatment agents (such as soda ash, calcium removal, viscosity reducer, etc.).) According to the construction materials of adjacent wells, the treatment agent for gypsum layer is prepared in advance. Improve the pH value of drilling fluid of water well drilling rig, and then improve the ability of small water well drilling rig drilling machinery to resist gypsum pollution.
2. quicksand layer
When drilling in the quicksand formation, it is necessary to increase the viscosity of the drilling fluid and the bentonite content of the drilling fluid of the water well drilling rig, which is generally required to be more than 10%. In order to improve the wall-building performance of the drilling fluid of the water well drilling rig, the erosion of the flow sand layer is reduced after the displacement is appropriately reduced in the project. Before tripping out, the section must be sealed with thick mud with a viscosity greater than 80 to ensure smooth tripping, electrical logging and casing running of the small water drilling platform drilling machinery.