... Challenges of NK Jurassic Gas Reservoirs The formation evaluation of North Kuwait Jurassic deep tight carbonate reservoirs is challenging due to the uncertainty of conventional log measurements and the oil-based mud filtrate invasion. The induction resistivity logging tool which based on formation...

... & gas logging while drilling drilling fluids and materials lwd log analysis drilling data acquisition annual logging symposium formation evaluation vibration porosity drillstring design invasion correction resistivity well logging drilling measurement artifact drilling dynamic drilling...

... characterization log analysis structural geology well logging asl member calcite cement porosity egypt sandstone asl reservoir upstream oil & gas sedimentology gulf radwan suez permeability kassem sandstone reservoir field diagenesis journal characteristic resistivity Introduction...

... the borehole wall. NMR Interpretation Traditional Gamma Ray and Resistivity data while drilling (often the only data while drilling) can be challenging to interpret, whether identifying the location of productive layers or to make use of this data to come up with hydrocarbon saturation. However...

... in the horizontal 6-inch section, the new RSS with a higher steering force and faster response-maintained wellbore control. NBGR with a short sensor offset provided early warning, and mitigation procedures were proactively enforced. With the use of Resistivity Images, dip trends were extracted, and their attributes...

... Abstract Geostopping is a critical operation due to wellbore-stability, well-control and HSE issues, requiring accuracy of a few meters. Reservoir boundary detection has previously been done with seismic applications and at-bit resistivity or near-bit gamma. However, seismic uncertainty can...

..., capillary pressure, electrical resistivity, NMR and CT-scanning tests. For initial differentiation of samples based on porosity, permeability and irreducible water saturation, we applied methods of flow zone indicator ( FZI ) and Winland R 35. Afterwards, we performed joint interpretation of FZI...

... the accuracy as mentioned above. Detailed workflow Data Preparation Data preparation is the most important step in the process of machine learning technology. In the study area all the wells have conventional log curves, such as gamma ray, bulk density, neutron porosity, deep resistivity, etc...

... ) ( Nashat et al, 2014 ) displays the logs from five different offset wells; the logs are in the order of GR, resistivity, density and thermal neutron porosity. As illustrated by these wells, the ‘E’ sublayer log response varies across the field. The resistivity profile may change over time due to nearby...

... Abstract This article proposes a workflow that combines reservoir mapping by logging while drilling (LWD) Extra- Deep Azimuthal Resistivity (EDAR) Inversions, LWD azimuthal bulk density image (ABDI) interpretation and calculation of true formation resistivity (Rt) to acquire an expected...

... Abstract This abstract demonstrates the application of an advance Extra Deep Azimuthal Resistivity tool to efficiently maximize reservoir exposure and map the reservoir architecture in an extended reach well of a mature field. The study shows how to maximise benefit from using advanced...

... at each step. Model outputs are compared in terms accuracy and cumulative loss. A synthesized reservoir box model encompassing volumetric interwell porosity, resistivity and saturation data is used for the validation of the algorithms. Aggregated model for estimating interwell saturation shows improved...

... electromagnetic directional resistivity (UDDE) instrument to map injection water movement. The UDDE instrument selected for the 6-in. horizontal hole was a 4¾-in. OD multifrequency tool with configurable transmitter-to-receiver spacings. Pre-well modeling using hybrid deterministic 1D resistivity inversions...

... Combining all the recorded measurements in frequency, apparent resistivity is estimated. When background formation resistivity is conductive (Rt=1ohm-m), fracture width appears. The effects of standoff for different fracture sizes have been studied using three different standoff sizes...

... steady state shock hazard pipeline upstream oil & gas cathodic protection mitigation voltage personnel piping simulation mitigation measure ac corrosion interference proximity piping design pipeline personnel ac stray current mitigation soil resistivity fault current...

.... water salinity water resistivity formation pressure pressure comparison upstream oil & gas pressure condition salinity pressure gradient quick look fluid pi value evaluation water density pressure index pi overpressure information normalize formation pressure reservoir...

...Pre-Job Inversion The prejob inversion study was conducted on proposed Extra Deep Directional LWD Resistivity trial wells located in two fields; Field A & Field B. Objectives, using all geological and petrophysical data: Determine waterfront depth of (reliable) detection (DOD) using...

... to the drilling bottom-hole assembly (BHA) to acquire apparent resistivity and ultrasonic images simultaneously to characterize the often not-observed geological features that control reservoir properties. These complementing images helped in characterizing vug distributions, bioturbation, faults and dissolution...

... data acquisition setting casing well planning directional drilling drilling fluids and materials trajectory design clinoform percentile new well construction strategy drilling operation upstream oil & gas receiver inversion resistivity logging while drilling reservoir simulation...

..., images help identify laminated shale-sand intervals, presence of fractures or faults, understand the tensor resistivity response against non-laminar intervals and provide net sand calibration, which is essential for net-to-gross estimation. Dip and azimuth interpreted on the image data can validate...