... circulation density production monitoring reservoir surveillance annular pressure drilling flow rate alkinani equivalent circulation density optimization ecd turbulent flow society of petroleum engineers pressure loss circulation density correlation coefficient flow regime literature...

... and perforation radius considered in past efforts, pressure loss effects in a wellbore (wall friction, acceleration, and fluid mixing) are incorporated into the proposed model. A numerical shooting method is then used to iteratively arrive at the maximum sand free rate for a perforated horizontal wellbore...

... pump rate and hole cleaning satisfied basic demand. Based on this concept, a prediction model is established according to the relationship among minimum cutting-carry pump rate, bottomhole pressure, circulation pressure loss and drilling pump pressure. This model considers the influence of cuttings...

... was used to study the impact of the nanosilica on the equivalent circulation density and the pressure loss in a 9000 ft. long* 12 ¼″ directional well using a commercial software. The experiments were carried out by using the API standard devices, which are commonly used by mud engineers for both lab...

... Abstract Hydraulic fracturing has increased immensely in recent years. An accurate prediction of frictional pressure losses of fracturing slurries is crucial for successful treatment and to avoid premature screen-out or even treatment failure. Scarce data and lack of theoretical basis of slurry...

... Abstract Casing drilling is used as an alternative to conventional drilling with drillpipe in order to reduce non-productive time. The smaller annular space in casing drilling elevates the annular pressure loss considerably at similar flow rates in conventional drilling. Consequently...

... fracture treatment fracture geometry pressure loss modeling perforation pressure match stimulation fracture length fracture upstream oil & gas net pressure coal hydraulic fracturing san juan basin drillstem/well testing coal seam gas fracture characterization coalbed methane pressure...

... ABSTRACT Multiphase flow conditions occur in a wide range of engineering applications in the petroleum, chemical, and nuclear industries. The design of production systems involving different fluids requires an accurate prediction of the pressure loss. Existing methods rely on the prediction...

... requirements. The valve, which can be installed in the tailpipe below the packer, can be expended into the cavern, if necessary, and has the capability to provide efficient operation with minimal pressure loss at anticipated high flow rates. This paper will discuss the history and field testing of the earlier...

... wellbore hydraulic lift velocity air velocity hole size drilling hydraulics drilling fluids and materials reduction pressure loss air drilling particle investigation attrition united states government particle system size distribution upstream oil & gas wellbore drilling wellbore...

... drilling fluid management & disposal hole size penetration drilling operation equation inlet pressure mass flow rate arastoopour diameter adewumi flow rate air drilling optimal gas velocity united states government annular pressure drilling pressure loss particle diameter production...