• casing
    Drilling

    Oil Well Casing

        Types of Casing  Based on the primary function of the casing string, there are five types of casing to be distinguished. Stove or Surface Casing The stovepipe is usually driven to sufficient depth (15–60 ft) to protect loose surface formation and to enable circulation of the drilling fluid. This pipe is sometimes cemented in predrilled holes. Conductor String This string acts as a guide for the remaining casing strings into the hole. The purpose of the conductor string is also to cover unconsolidated formations and to seal off over pressured formations. The conductor string is the first string that is always cemented to the top and equipped with…

  • Drilling

    Well Control

    what is well control 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 reason the borehole pressure falls below the formation fluid pressure, the formation fluids can enter the well. Such an event is known as a kick. This name is associated with a rather sudden flowrate increase observed at the surface. A formation fluid influx (a kick) may result from one of the following reasons:…

  • drilling
    Drilling

    Oil-Base and Synthetic-Base Muds

    Drilling Mud Tests The field tests for rheology, mud density, and gel strength are accomplished in the same manner as outlined for water-based drilling mud. The main difference is that rheology is tested at a specific temperature, usually 120◦F or 150◦F. Because oils tend to thin with temperature, heating fluid is required and should be reported on the API Mud Report. see our Drilling Fluids Books section Sand Content Sand content measurement is the same as for water-base drilling mud except that the mud’s base oil instead of water should be used for dilution. The sand content of oil-base mud is not generally tested. HPHT Filtration The API filtration test result for oil-base drilling…

  • Drilling Fluids Books

    Theory and Applications of Drilling Fluid Hydraulics Download ———————————————————— Drilling Fluids Manual Download  ————————————————————- Amoco – Drilling Fluid Manual Download —————————— Drilling Fluids Technology Download  ————————————————————-   see our Drilling Video Course – more than 140 FREE movies about oil well drilling   Drilling Fluids & Health Risk Management Download Development of Water-Based Drilling Fluids customized for Shale Reservoirs Download    Exercises within Drilling Fluid Engineering Download Drilling Fluids Engineering Manual Download Drilling Fluids Download Drilling Fluids Awareness Campaign Workbook Download Advances in Drilling Hydraulics and Drilling Fluid Rheology Download Drilling Fluids PowerPoint Download  Properties of Drilling Fluids Download Drilling Fluids Download Link 1     Download Link 2 Drilling Fluids…