... a borehole where different fluids can be pumped in. A full set of metallic standards made of aluminum alloy and aluminum composite are also proposed in six different borehole diameters that can be filled with various fluids. All standards were initially designed and modeled to calibrate logging tools...

... impedance borehole Schlumberger frequency ultrasonic imaging diameter physics sensor log analysis resolution information amplitude interpretation Upstream Oil & Gas fracture Formation Resistivity standoff Imaging spwla 59 Symposium resistivity Drilling SPWLA 59th Annual Logging...

... borehole. With modeling, it is easy to vary the size of the borehole to match the tool size being calibrated. In the models, wireline tools are positioned against the side of an 8-in. borehole, and LWD tools are centered inside a borehole with the nominal diameter for the tool. This ensures that LWD logs...

... conditions, and especially in heavy oil-based mud where acoustic and electrical data quality is often compromised. well logging fracture detection inversion log analysis spwla 57 induction tool characterization Upstream Oil & Gas diameter interpretation Drilling triaxial tool hydraulic...

... Abstract Microresistivity imager logs have broad application in geological, petrophysical and geomechanical studies. A new small diameter wireline-style logging tool with both real-time and memory capability has been engineered to reduce the acquisition risk and extend the application...

... tool. log analysis inter-echo time Upstream Oil & Gas spwla 55 borehole pulse sequence tool design requirement vertical resolution acquisition gradient specification porosity echoe Symposium Drilling well logging accuracy diameter sequence mr-lwd tool precision SPWLA...

.... The paper presents the vertical resolution, depth of investigation and electrical diameter of the imager. The current leakage from the transmitter to the formation back to the tool mandrel is a challenge of obtaining an image in a low-resistivity environment. The paper presents how the leak is reduced...

... factors is the diameter of the OH, which can be beyond the reach of the tractor arms or wheels, either due to large bit sizes or enlarged boreholes caused by washouts. A new generation tractor was introduced in 2010 to address this issue. With an outer diameter of 4 1/2" and an operational OH diameter...

... parameter required to compute dip (ignoring standoff effects) would be the diameter of the borehole. However, gamma rays generated inside a density tool can penetrate several centimeters into the formation. The result is that bed boundaries can be detected before or after the bounding plane intersects...

... of their size of one-inch diameter and length of less than two inches. Many laboratory geoscientists and engineers prefer using samples that are one and a half inches in diameter and two inches long, allowing a larger sample volume for many rock characterization. This paper discusses results from a new sidewall...

... rotation Symposium nuclear fluid density resistance capacitance array tool spinner fluid density well trajectory sensor spwla 52nd diameter data acquisition horizontal well Standard Deviation SPWLA 52nd Annual Logging Symposium, May 14-18, 2011 1 New Sensor Development Helps Optimise...

... samples slightly larger than standard laboratory core plugs, 1.5 in in diameter by 3 in in length. Every aspect of the new coring system has been engineered to enable easy and reliable wellsite operation with real-time intelligent drilling control and efficient recovery in a broad range of lithologies...

... on the density measurement stabilizer. Towards the end of the drilling run it was noticed that the bottom quadrant density correction (delta rho) was slowly moving from values normalized on zero to a more positive number of about 0.15 g/cm 3 . Measurements of the density stabilizer diameters performed after...

... wellbore stability model diameter Engineer caliper measurement Reservoir Characterization detector mud weight Norway Drilling operation breakout Symposium case study density image wellbore pressure SPWLA 52nd Annual Logging Symposium, May 14-18, 2011 1 Real-Time and Time-Lapsed LWD Density...

... and, by inference, formation permeability can be derived from these time based measurements (i.e., effectively injection logs while drilling). well logging formation property borehole sensor Upstream Oil & Gas flow rate diameter resistivity seawater Drilling modeling spwla 51 BHA...

... as a sinusoid when the image is unwrapped. More specifically, a plane intersecting a borehole, projected onto a plane with azimuth and depth as coordinates, becomes a sinusoid on the projection. The dip can be calculated from the amplitude and the borehole diameter, while the azimuth is read off directly...

.... This oscillation mode can be typically observed in slide mode with a steerable PDM. Because the hole diameter is constant along z-axis, rippling cannot be observed in traditional 1-D caliper plots. The geometry of a rippling borehole can be expressed in a Cartesian coordinate as follows: External Internal Drill...

... algorithm dielectric loss wettability Upstream Oil & Gas Transmission Line laboratory dielectric response petroleum frequency network analyzer diameter measurement system practical broadband dielectric measurement Symposium spwla 50 Paste SPWLA 50th Annual Logging Symposium, June 21-24...

... Upstream Oil & Gas heterogeneity flow in porous media vug porosity dense rock matrix Artificial Intelligence modeling numerical pseudocore Reservoir Characterization Fluid Dynamics Simulation diameter conductive patch training image fullbore image capillary pressure...

... 0.2 to 1.0 g/cc, and tool standoff from 0 to 0.5 in. in oil-based mud and water-based mud. The images of the synthetic formation were analyzed to define the Gamma Borehole Diameter , a term equivalent to the Electric Borehole Diameter in resistivity imaging. The Gamma Borehole Diameter , which...