Classification of slurry materials in Shaanxi

Shaanxi mud materials can be divided into the following categories according to their role in drilling fluids:

Filtration loss reducer: reduce the water loss of drilling fluid in permeable formations and prevent the collapse of the borehole.

Tackifier: Increase the viscosity of the drilling fluid and enhance the ability to suspend cuttings.

Emulsifiers: Promote the mixing stability of oil-based and water-based slurries.

Plugging agent: used to plug formation cracks or holes to prevent blowout accidents.

Lubricant: Reduce the friction between the drilling tool and the borehole wall and reduce the difficulty of drilling.

Fungicide : inhibits the growth of bacteria and prevents mud spoilage.

Defoamer: Eliminates foam in drilling fluids and improves stability.

Flocculant: Promote the aggregation and sedimentation of solid particles in the drilling fluid and reduce the sedimentation problem.

Dejaming agent: Relieve the problem of stuck drilling tools and resume drilling operations.

Other additives: such as corrosion inhibitors, weighting agents, etc., which are used to protect metal equipment, adjust density, etc.

Typical application examples of slurry materials in Shaanxi:

Because of its high slurry rate and low water loss rate, sodium-based bentonite is often used as a basic material for the configuration of water-based drilling fluids.

Polymeric filtration loss reducers (such as polyacrylamide) can effectively reduce water loss by adsorbing the pore surface of the formation.

Calcium-based bentonite is suitable for conventional drilling operations due to its low cost and stable performance.