... MD. At this depth, lost circulation was encountered and LCM Pill 1 was pumped through the multi-open circulation (MOC) valve and squeezed into the formation. The dynamic loss rate decreased from 193 to 40 bbl/hr. Drilling was resumed to 10,776 ft, where LMC Pill 2 was pumped using the same method...

... during operations also led to increased reliability of the MPD equipment. well control managed pressure drilling bottom hole pressure annular pressure drilling PWD data real time system Upstream Oil & Gas pore pressure circulation MPD system back pressure Coriolis MPD equipment...

... confidence across prospective intervals having narrow pore and fracture pressures margins and higher equivalent circulating densities (ECD). Dual gradient in this paper refers to one hydrostatic gradient of seawater density that begins at rig floor and a second hydrostatic gradient of mud density...

.... It was also confirmed that sag remains a very complexe phenomenon with a multiplicity of variables making it challenging to indubitably qualify the sag potential with just one single laboratory test. drilling fluids and materials circulation drilling fluid selection and formulation Upstream Oil...

... important to use a tool that best simulates downhole conditions. It is ideal if the results from mathematical simulation are validated using physical measurements. This paper documents how downhole temperature during fluid circulation was physically measured using temperature sensors and was then compared...

... drillstring design modeling liner liner hanger circulation service provider BHA Upstream Oil & Gas inhibitor objective service company operator flow rate DwL operation recommendation hanger liner drilling technology society of petroleum engineers Introduction As exploration...

... as a resistivity measurement log showed that fractured formation was a risk in the planned tophole section. When drilling through these sections, operators are occasionally faced with total lost circulation conditions, which can prevent cuttings from being removed from the hole and may cause packing-off...

.... Successful management of lost circulation should incorporate accurate estimation of loss zone location, followed by corresponding lost circulation control procedures. This paper presents an innovative way to estimate the location of mud loss by interpreting distributed temperature measurement which...

... are commonly implemented when normal circulation cannot adequately remove cuttings from the borehole. Field reports have indicated that specialized fibrous-type materials enhance cleaning performance when added to fluid sweeps. Yet, understanding of the behavior of this improvement remains inexact. This paper...

... justifies many successfully reported field applications in arresting lost circulation and wellbore strengthening applications. Table 2 Resiliency results for different LCM in Combinations Material Combination Pressure 5000 psi 10000 psi GM 600/ RGC 100 80/20 6.94% 22.39% GM 600...

... the wellbore and drilling fluid parameters to optimize the flow rate and rate of penetration (ROP) within equivalent circulating density (ECD) constraints. Real-time drilling data are used to update the models: the pore-pressure/shear-failure gradient and fracture gradient boundaries for geomechanics; and ECD...

... Abstract A previous attempt to drill an exploration well in ultra-deepwater in the Gulf of Mexico (GoM) did not reach its objective due to an inability to maintain a Water Based Mud (WBM) system light enough to maintain circulation. For the next round of exploration drilling, a system...

..., the treatment becomes more of a compacted plug, instead of fracturing like conventional cement. This resiliency gives this novel product an improved ability to withstand the mechanical stresses involved downhole in lost circulation. Its essentially inert nature also offers other advantages in that no activator...

... the operation on a small, unmanned satellite platform will be described, along with pre-job planning and operational steps taken to ensure the sand jet tool could reach the target depths in the deviated well. completion installation and operations circulation proppant jet nozzle nozzle circulation...