Hole cleaning is an essential part of drilling. It ensures that the material that is drilled is effectively and efficiently being removed from the wellbore. Failure to achieve proper hole cleaning can result in a host of wellbore problems and issues. Indications of poor hole cleaning: Excessive pull on trips High rotary torque Lowered rate … Continue reading A Guide to Hole Cleaning
Tag: Hole Cleaning
Drilling Fluids: Suspend and Release Cuttings
The mud must trap the cuttings while drilling but at the same time it must allow the solids control equipment to be able to remove the drilled solids. If cuttings settle out during the drilling process then this may bridge the well bore and cause problems. Also if the fluid is not designed properly then … Continue reading Drilling Fluids: Suspend and Release Cuttings
Drilling Fluids: Cuttings Removal
As the cuttings are drilled they must be removed and brought to the surface through the annulus. The removal of the cuttings is a function of the size, shape and density in combination with the rate of penetration (ROP), drill string rotation, viscosity, density and annular velocity of the drilling fluid. Viscosity - higher viscosities … Continue reading Drilling Fluids: Cuttings Removal