... area upstream oil & gas lateral section thickness geometry resistivity igneous rock evaluation characterization landing point Introduction The Late Jurassic-Early Cretaceous Vaca Muerta Formation is composed of organic-rich calcareous mudstones and represents the main self-sourced...

.... This technical document shows the application of resistivity technology close to the bit, providing added value to geological control and monitoring during drilling, allowing the collection of information as a key point for critical casing points. When drilling of a horizontal well, the problem of performing...

... readings. However, an exceptional challenge was met during the drilling of well JE34H when low resistivity values close to the water zone were found at the reservoir top. This case study is focused on the post-well analysis performed integrating all data available in order to establish the relationship...

... operation sensitivity azimuthal transverse antenna transmitter antenna society of petroleum engineers deposit thickness azimuth resistivity resistivity anisotropy Introduction In view of the current need to increase the production of oil and gas deposits, especially in those...

... we haven't this kind of project in this all field. To perform this project, it was used some basic data of the wells, like SP and resistivity and a petrophysical model. To do the feasibility analysis we use wells basics curves envelops. Combining with core analysis a static facies model...

... requires operators to manage operational costs while still obtaining sufficient geological, petrophysical, and geomechanical information to successfully evaluate and develop the reservoir. In a recent Vaca Muerta exploration well, LWD resistivity and azimuthal sonic measurements were combined with advanced...

... Abstract The Upper T Sandstone of the Tarapoa Block in the Oriente Basin of Ecuador demonstrates low resistivity despite often containing light gravity oil, the presence of which has been confirmed through tests and production. This situation merits an in-depth analysis to better understand...

... the sweet spot. When available information is based on 2D seismic and well correlation, advanced geosteering techniques are used to anticipate resistivity changes along the well trajectory, which can be used before and during the drilling process to successfully place a horizontal well. The geosteering...

... planning to produce successfully thin reservoirs which in the past were considered low or non-productive. Upstream Oil & Gas Drillstem Testing MiniDST oil production drillstem/well testing reservoir pressure operation productivity estimation workflow resistivity characterization...

... Abstract Volumetric estimates are required at all stages of the field life cycle. One of the main parameters used to estimate the stock tank oil initially in place is the water saturation, which depends mainly on the true resistivity (Rt) of the formation. Correct log interpretation of LWD...

... volumes with conventional logs lead in some cases to water production. A tailor-made workflow focusing on resolving these challenges has been built. The use of spectroscopy measurements, when available, permits to identify masked sand bodies. Its integration with triaxial resistivity tools permits...

... porosity Indicator Ecuador tuff resistivity permeability effective porosity limestone reservoir oriente basin Introduction Puma field is located in the Oriente basin of Ecuador ( Fig. 1 ). Historically, the Oriente basin has three main productive hydrocarbon reservoirs: Napo U, Napo T...

... the economics of a project, an accurate determination of this parameter with a low amount of uncertainty is mandatory. Historically, the primary method for saturation computation is based on resistivity, where conductivity and porosity measurements are the fundamental measurements required. However, this method...

.... Reservoir Characterization trajectory petrophysical property log analysis Thickness optimization operation real time system Upstream Oil & Gas information well trajectory optimization resistivity TVD positioning Scenario well logging selection low thickness zone resistivity curve...

... averaged across the shale and sand lamina. One of the measurements affected is resistivity hence is common to find low net pay reservoir. These low resistivity pays, characterized by electric anisotropy, are often overlooked or mistaken as water-bearing sands when conventional resistivity measurements...

... and shortcomings of both measurements. On the other hand, and going beyond the historical application, new methodologies to apply sigma-while-drilling in formation evaluation have been developed. Through the integration of LWD resistivity and sigma measurements, which are collocated in the multifunction LWD...

... and resistivity and the differenciation between oil and water with conventional petrophysical techniques is inaccurate. Conventional log analysis has limited potential since the resistivity shows identical values in both oil and water bearing levels. Deciding on a completion strategy from an inaccurate...

... type matrix permeability hydrocarbon reservoir fracture system reservoir characterization resistivity water saturation swr cementation exponent fracture Introduction A great number of reservoir systems are made up of different lithologies and pore types. The pore types could...

... of resonance frequency of a vibrating tube-carrying fluid sample. The same interpretation method is also applied to a capacitance sensor and a resistivity sensor to further confirm the results derived from the density sensor. log analysis pvt measurement fluid modeling equation of state real time...

... Abstract This work proposes a method to determine oil, gas and water presence in reservoirs directly from commonly measured well log parameters, such as resistivity, gamma-ray, density and neutron, by using Artificial Neural Networks (ANN). The wells from the oil field approached in this case...