wellbore Archives - AONG website

Directional Drilling Glossary

By AONG managerPosted on 2017-01-02Posted in Drilling - EnglishTagged bit, directional drilling, drilling, wellbore

Directional Drilling The glossary of terms used in directional drilling has been developed by the API Subcommittee on Controlled Deviation Drilling under the jurisdiction of the American Petroleum Institute Production Department’s Executive Committee on Drilling and Production Practice. The most frequently used terms listed below. Angle of inclination (angle of drift). The angle, in degrees, […]

Well Pressure Control

By AONG managerPosted on 2017-01-01Posted in Drilling - EnglishTagged BOP, drilling, gas, mud, well, wellboreNo Comments

Basically all formations penetrated during drilling are porous and permeable to some degree. Fluids contained in pore spaces are under pressure that is overbalanced by the drilling fluid pressure in the well bore. The borehole pressure is equal to the hydrostatic pressure plus the friction pressure loss in the annulus. If for some […]