... Abstract Smooth solid surfaces of reservoir rocks are assumed in formation evaluation, such as NMR petrophysics and reservoir wettability characterization through contact angle measurements. Measuring the degree of surface roughness, or smoothness, and evaluating its effects on formation...

... Abstract Borehole-log data acquisition accounts for a significant proportion of exploration, appraisal and field development costs. As part of Shell technical competitive scoping, there is an ambition to increase formation evaluation value of information by leveraging drilling and mudlogging data, which...

... conventional approaches which developed and work well for vertical wells. For all the above problems formation evaluation approach for horizontal wells use the same as for vertical wells. The coaxial-cylindrical or radial borehole models was developed for vertical wells. It is the basis of most algorithms...

... these variations in the rock are critical to identify permeability and reservoir quality variations. In this paper, a method to integrate drill cuttings analysis into standard formation evaluation program is presented as an alternative to enhance reservoir characterization and description. drilling...

... Upstream Oil & Gas different tool well logging calculation log analysis log response discrepancy different density-neutron lwd tool response tool response Neutron log shale evaluation petrophysical interpretation lower member formation evaluation histogram upper member...

... Abstract In current market conditions, performing logging operations as efficiently as practically feasible has become crucial to reduce the overall cost of formation evaluation. One of the most important formation evaluation parameters is hydrocarbon saturation. At the same time...

..., thus providing additional valuable information for formation evaluation. The new method is demonstrated by practical application in both synthetic and field examples of oil sampling in OBM. The synthetic examples demonstrate the robustness of the algorithm and show that the true formation and fluid...

.... The industry is just beginning to benefit from the enhanced formation characterization, reduced HSE risk, and improved operational efficiency that sourceless formation evaluation technology provides. Abstract Measurements from pulsed neutron devices have been available via wireline conveyance for more...

... & Gas apparent dip angle lwd density image Earth Model well logging patent density image noise log analysis image log sinusoidal line automatic dip borehole image formation evaluation SineWave wellbore Introduction A planar geological surface (often referred to as a “dip...

... and the information discussed in this review was derived from the study of the characteristics and data from hundreds of completions with production results for shale wells in North America. The findings presented show the results of formation evaluation and analytical evaluation which have proven to be good...

... Abstract In this paper, a multiwell data integration approach for improved formation evaluation is presented to describe: (1) Mixing between injected fresh water and saline formation water, (2) Water salinity variation vertically across reservoir intervals, and (3) Injected water movement...

... program is selected in each case. chemical source histogram distribution well logging ggd measurement neutron density difference log analysis accuracy differential upstream oil & gas sngd measurement gamma ray consideration lithology formation evaluation operation porosity sngd...

... basin tight gas reservoir fracture characterization thickness formation evaluation resistivity imaging technology upstream oil & gas horizontal section completion design spe 160173 innovative interpretation workflow resistivity measurement borehole image stratigraphic thickness gas...

... the obstacles and uncertainties while drilling. Successful acquisition and application of selected measurements led to achieving the drilling and formation evaluation objectives. To drill the optimal wellbore, seismic-while-drilling technology was employed to optimize casing depths and minimize drilling risks...

... reservoir characterization shale gas well logging log analysis trajectory design spe 147504 formation evaluation interpretation gamma ray measurement shale play evaluation complex reservoir lateral gamma ray schlumberger real time system well planning upstream oil & gas...

... from which, the respective saturations Sw res for resistivity and Sw sig for sigma can be computed as: (3) S w r e s = [ a ⋅ R w ϕ m ⋅ R t ] 1 n   and Abstract Formation evaluation in unknown water salinity can be done by solving...

...5. Advanced Formation Evaluation In order to overcome the problems of reservoir definition, getting a more realistic formation evaluation, an integrated interpretation involving conventional log, high resolution image log and Log Facies from cluster analysis was introduced. Thin layer...

... be fully evaluated with conventional log measurements and interpretation techniques. This is because the laminar nature of the clay component suppresses the logged deep resistivity measurements and results in calculated values of water saturation that are artificially high. This formation evaluation...

... and two other wells were deepened by more than 200 m, so that good volumetric coverage could be obtained at the oil- water contact zone. Extensive logs, core and formation tests were also acquired to provide deterministic saturation profiles at the near wellbore region. Formation evaluation in the project...

... Abstract Formation evaluation in thin sand-shale lamination seeks first to determine sand resistivity, volume fraction, and porosity. Afterwards, saturation and volume are simple Archie applications. Resistivity anisotropy techniques can provide estimates of sand resistivity and volume fraction...