... 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 geothermal, carbon capture utilization...

... relied on one-dimensional (1-D) inversions that accounts only for changes in resistivity above or below the wellbore. When geology is complex, resulting in lateral changes in resistivity, 3-D inversion of EM data is required to provide increased reservoir understanding. This paper presents a case study...

... of corrosion 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...

... 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...

...-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 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...

... 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...

... 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...

.... 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...

... to not use 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...

... 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...

..., the effects of pressure, temperature and magnetic field strength on the electrical resistivity and rheological properties of a sensing smart spacer fluid modified with iron oxide nanoparticles (nanoFe 2 O 3 ) were investigated. The temperature was varied from 25°C to 75°C. The magnetic field strength...

... 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...

... 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...

... 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...

... of the cement in place. The well was installed in soft swelling clay soils to investigate the sensitivity of the smart oil well cement. A new method has been developed to measure the electrical resistivity of the materials using the two probe method. Using the new concept, it has been proven...

... 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...

... water makes formation water salinity highly variable. In such environments, saturation equations that rely on a good knowledge of the water salinity, such as resistivity-based equations (Archie) or ther mal neutron capture cross section (Sigma), cannot fully capture the variability in fluids...

... smart cement. Variation of electrical resistivity of the smart cement with curing time was monitored from the initial time of mixing to 28 days of curing under water. Adding 1 percent NCC to the smart cement reduced the initial resistivity from 1.07 O.m to 0.85 O.m, a 21% reduction but increased...

.... Tests were performed on the smart cement from the time of mixing to hardened state behavior. During the initial setting the electrical resistivity changed with time based on the amount of NanoFe used to modify smart oil well cement. A new quantification concept has been developed to characterize cement...