... europe government presented tibble upstream oil & gas modeling & simulation exhibition erosion asia government slurry spe annual technical conference shunt activation packing gauge leakoff recommendation nozzle friction diverter valve failure Introduction In a cased hole...

... diffusivity coefficient drillstem/well testing net pressure calculation fluid leakoff pandey concentration acid injection rate reservoir characterization drilling fluid property fluid loss control upstream oil & gas acid stage leakoff velocity acid fracturing treatment fracture...

... crack. Formation permeability is typically obtained by means of modeling fluid leakoff during the shut-in period. Early studies have assumed a constant fluid pressure boundary condition on the fracture walls or a constant leakoff rate into the formation. However, the results deduced based...

... Abstract Analysts regard the fracture injection and falloff test known as the diagnostic fracture injection test (DFIT) as a reliable tool to quantify formation closure stress, leakoff coefficient, formation permeability, and pressure. The recent analytical DFIT model for before and after...

... be identified prior to designing the frac with an economic method that does not add significant operational risk? Can the leakoff of particulate tracer material from a carrier fluid into the target formation be used to identify net pay, natural fractures, or relative mechanical properties? Hypothesis...

... been resolved in many cases using various techniques, there are opportunities for improvement. This paper will discuss a technique that uses a sealant with a particulate fluid-loss additive that limits leakoff into the formation. The sealant left in the wellbore is easily removed and the limited...

... gravel placement execution. Excessive Alpha wave dune height is the cause of many early time screenout and job failures. The job parameters, including wellbore geometry, pump rate, leakoff and leakoff control, fluid density and viscosity, gravel particle size and geometry, liteProp and conventional...

... Abstract This paper describes a method to correct formation pressures measured while drilling for the effects of supercharging (increased sandface pressure caused by drilling fluid filtrate leakoff).The method consists of deliberately varying the wellbore pressure, measuring...

... and treatment guidelines are presented to provide the Completion Engineers the necessary information for designing successful treatments. pump rate dune height beta wave wave dune height leakoff drilling operation alpha wave dune height reservoir bottomhole pressure fluid leakoff gravel...

... avoid excess leakoff and premature screenouts. The discussion includesvarious measures such as optimized screen wash pipe annulus and appropriateusing the differential valves, to effectively reduce frictional pressure duringBeta wave buildup. Fluid leakoff and leakoff control, in-situ...

... propagation and reservoir flow in a fully coupled manner. The individual methods differ by the algorithms, by which the dynamic modification of the transmissibility for fractured grid(s) is derived, and range from an empirical approach to the use of analytical fracture models. leakoff upstream oil...

... pressure overburden reservoir characterization annular pressure drilling salt formation mud weight leakoff fracture pressure well control integrity test structural geology salt section drilling operation drilling fluid management & disposal salt interval stress ratio wellbore design...

... of Central Australia; these cases commonly indicate an interrelationship between production outcomes, the magnitude of in-situ stress and the onset pressure or severity of pressure-dependent leakoff. Historically, treatments can be placed in these environments either after performing numerous diagnostic...

... with decreasing fluid efficiency. Multiple sub-parallel fracturing and complex fracture geometry was encountered. Sub-parallel fractures may be initiated at the tip or at the fracture wall due to shear failure and is dependent on the fluid efficiency and the type of leakoff, i.e., wall building or viscous...

... Abstract A new study has been performed that focuses on the reduction in gas flow rates and production that can occur due to damage from fracture fluid leakoff in high permeability gas reservoirs. We found, in some cases, fluid damage to the formation during fracturing operations (i.e., Frac...

... in interpreting and analyzing FETs (Fluid Efficiency Tests) caused by varying stress contrasts in the different layers will be discussed. It will be shown that masking early data of the pressure decline after shutdown in the minifrac can result in misinterpretation of leakoff parameters. Well tests performed...

... to excessive fracture complexity and fluid leakoff. A detailed study of the rock mechanical properties, wellbore stress & fracture initiation characteristics, far-field stress regime & fracture orientation, and fluid leakoff behavior was integrated with fracture modeling studies to evaluate...

...Pressure-Dependent Leakoff. Recently Barree and Mukherjee 6 published a method that allows pressure-dependent leakoff to be quantified and the leakoff mechanism to be identified. The method uses G-function analysis to identify the leakoff mechanism, i.e., normal, pressure-dependent leakoff...

... the technology currently used in vertical wells. Wells with record-breaking production have been successfully completed with this technology, but failures have also occurred because of problems associated with imperfect gravel placement. If excessive leakoff is encountered during gravel placement, or sand...

... together, these techniques can characterize negative effects that can occur to the natural fracture system during the hydraulic fracturing process. These effects relate to the extent of natural fracturing, permeability anisotropy, pressure dependent leakoff, and natural fracture damage. wolfcamp...