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RISAnnular Frictional Pressure Losses During Drilling—Predicting the Effect of Drillstring Rotation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Controlling the annular frictional pressure losses is important in order to drill safely with overpressure without fracturing the formation. To predict these pressure losses, however, is not straightforward. First of all, ...
The Role of Particle Size Distribution for Fluid Loss Materials on Formation of Filter-Cakes and Avoiding Formation Damage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Numerous studies have shown that careful particle size selection is the main parameter for reducing fluid loss when drilling permeable or fractured formations. The methods are generally built around either the D50 or D90 ...
The Shielding Effect of Drilling Fluids on Measurement While Drilling Tool Downhole Compasses—The Effect of Drilling Fluid Composition, Contaminants, and Rheology
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Materials such as added clays, weight materials, drill solids, and metallic wear products in the drilling fluid are known to distort the geomagnetic field at the location of the measurement while drilling (MWD) tool ...
Geopolymers as an Alternative for Oil Well Cementing Applications: A Review of Advantages and Concerns
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Geopolymers, being inorganic polymers created from rock sources, were evaluated as an alternative to Portland cement. To evaluate their usability, some properties of a selected geopolymer were measured and compared with ...
Effect of Zn2+ and K+ as Retarding Agents on Rock-Based Geopolymers for Downhole Cementing Operations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Geopolymer material has a potential to function alongside Portland Cement as an efficient cementitious material for well cementing and plug and abandonment applications. Geopolymer material requires retarding agents to be ...
Experimental Bench-Scale Study on Cuttings-Bed Erosion in Horizontal Wells
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Cuttings-beds formation while drilling wellbores is a common challenge, especially for horizontal wells, as drilled particles have higher area to be deposited and form cuttings-beds, which can cause several problems such ...
Cuttings Transport With Oil- and Water-Based Drilling Fluids1
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Deviated well sections are common in most modern offshore well construction designs. In the North Sea region, which is a good example of mature areas, practically all producer or injector wells have highly deviated well ...
Effect of Drillstring Deflection and Rotary Speed on Annular Frictional Pressure Losses
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Keeping the drilling fluid equivalent circulating density in the operating window between the pore and fracture pressure is a challenge, particularly when the gap between these two is narrow, such as in offshore, extended ...
The Effect of Different Drilling Fluids on Mechanical Friction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A very important aspect in highly inclined wellbores is the mechanical friction. For extended reach drilling (ERD) and through tubing extended reach drilling (TTERD) this can be a limiting factor. Friction caused by the ...
Oil-Based Drilling Fluid's Cuttings Bed Removal Properties for Deviated Wellbores
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Results from cuttings transport tests in the laboratory using different field-applied oil-based drilling fluids with similar weight and varying viscosities are presented in this paper. The fluids are designed for highly ...