Cooling lubricating drill bits tools

Drilling mud additives

The drilling fluid impacts the bottom of the well at a high flow rate at the nozzle of the drill bit, thereby improving drilling speed rock breaking efficiency. High pressure jet drilling utilizes this principle, which is to use high pump pressure drilling to generate a strong impact force on the bottom of the well caused by the high-speed jet formed by the drilling fluid, thereby significantly improving the drilling speed. When using a turbodrill to drill, the drilling fluid flows through the turbine blades at a high flow rate the drill pipe, causing the turbine to rotate drive the drill bit to break the rock.

However, drilling practice has shown that as a drilling fluid, only achieving the above points is enough. In order to prevent minimize damage to oil gas reservoirs, modern drilling technology is compatible with the encountered oil gas reservoirs to meet the requirements of protecting oil gas reservoirs; In order to meet geological requirements, the drilling fluid used is conducive to formation testing does affect the evaluation of the formation; In addition, drilling fluid should also prevent harm pollution to drilling personnel the environment, should corrode downhole tools ground equipment minimize corrosion as much as possible.

In general, the cost of drilling fluid accounts for only 7-10% of the total drilling cost. However, advanced drilling fluid technology can often save drilling time exponentially, thereby significantly reducing drilling costs bringing significant economic benefits.