... logging log analysis formation quality characteristic water cut reservoir permeability horizontal well resistivity oil column pore high-angle fracture figure 1 oilfield dissolution early stage pearl river mouth basin heterogeneity identification method Introduction The A oilfield...

... by the ratio of pore pressure to bottom hole pressure. Bottom hole pressure is calculated from the mud weight and well depth and corrected for frictional losses. The pore pressure is calculated using the hydrostatic gradient. We overlaid resistivity logs from eight wells, which are sensitive to pore pressure...

... Abstract Petrophysical analysis of well logs evaluates the lithology, porosity, water saturation and net pay zone where resistivity logs are used to indicate the fluid type within the depth of investigation of the measurements. The introduction of multi-axial electromagnetic (EM) resistivity...

... Abstract Fluid imaging technologies are used in a wide range of E&P applications. Among geophysical methods, electromagnetics (EM) determines subsurface resistivities and thus respond to fluid changes. On the path to zero CO 2 footprint, the biggest potential for EM lies in monitoring...

... With the introduction of Ultra-deep resistivity tools, in reservoirs that show a resistivity contrast with the overburden units, early detection of the reservoir is possible. The depths of investigation of these tools can be 30m (100ft) in mid to high resistivities and over 60m (200ft) in some...

... and scaling in pipe and in the reservoir. Measuring formation water resistivity (R w ) goes beyond using it as the basis of petrophysical well log interpretation. It is the key to telling different waters apart for taking the most representative samples. We introduce a calibrated induction-based water...

... Abstract In this paper, we examine the evaluation of a low resistivity pay siliciclastic reservoir in Bohai Bay, China. The reservoir consists of fine to silt sized sand grains with dispersed illite and smectite minerals filling the pore throats. Due to the large surface area associated...

...) and the resistivity (second order tensor, 3D representation) for the bulk material using the Vipulanandan Impedance Corrosion Model. Corrosion development in 30 inches long steel specimens were studied in the 3.5% salt solution (simulating sea water) for 500 days. The changes in the specimens were monitored...

...-well seismic attributes (maximum amplitude) are innovated) the relationship between the resistivity and the natural gamma curve is established, and the pre-drilling geological guidance model is established. This method not only gives the meaning of seismic attribute logging, it also solves...

... and high pressure high temperature (HPHT) experiments were performed to evaluate the smart cement behavior with and without the SBR polymer. Addition of 1% and 3% SBR polymer increased the initial resistivity by 4% and 12% respectively and hence this parameter can be used for quality control in the field...

... hydrate formation and estimation of hydrate saturation. The Work flow to estimate Petrophysical properties is guided by the high resistivity, low transit time and low density. It includes evaluation of different overlays and cross plots of wells like picket plot to firm up different parameters. Porosity...

.... The primary tool used was azimuthal deep resistivity, which uses resistivity contrast within beds to help geosteer and stay within reservoir bodies, hence optimizing well placement. Guided by azimuthal resistivity imaging, it was possible to determine the well direction relative to the beddings using oriented...

... radioactive sources in the well. This paper is a case study illustrating utilizing absolutely sourceless BHA including combination of azimuthal sonic with azimuthal resistivity distance to boundary technology as a highly effective alternative sourceless geosteering method & adds extra formation...

... strain rate relationship drilling fluids and materials maximum shear stress drilling mud vipulanandan model magnetic field strength shear strain rate drilling fluid selection and formulation shear stress drilling fluid property efficiency drilling fluid chemistry resistivity...

... of synthetic based fluid to water (S/W) ratios of the SBF were 50/50 and 70/30. The temperature was varied from 25°C to 85°C. The nanoclay concentration was varied up to 1% by the weight of the SBF to modify the rheological properties and the sensing electrical resistivity of the SBF. The effect nanoclay...

... behavior with and without NanoAl 2 O 3 up to 28 days of curing. The addition of 0.5% and 1% NanoAl 2 O 3 increased the initial sensing property (electrical resistivity) of the smart cement by 10% and 30% respectively. In a one day of curing, the maximum change in the electrical resistivity (RI 24hr...

... Dielectric logging can be used to quantify water saturation, water resistivity and textural properties of formation. Application of this log is especially useful in situations where the resistivity of water is unknown or it varies considerably at different depth. This logging is based...

... Abstract Reserve estimation of low-resistivity, low-contrast, laminated shaly sand formations from conventional logging tools often yield inaccurate results of the true potential of the reservoir. A productive zone with horizontal resistivity of 1 Ohm-m can easily be interpreted as wet...

... electrical resistivity measurements and computer simulation." Journal of Construction and Building Materials , Abstract In this study, a field well was installed and cemented using the smart cement mixture with enhanced piezoresistive properties. The field well was designed, built, and used...

... and are therefore difficult to differentiate. Native and invaded fluid typically do have measurably different live fluid density or resistivity. However, resistivity measurements should only be used if a temperature correction is applied. The general workflow for real-time hydrocarbon contamination quantification...