..., permeability, fractures & faults, cap rock(s) integrity, lateral extension, etc., that are readily available for further assessment and modelling. In addition, the previous presence of hydrocarbons is a first compelling indication of the integrity and safety of the structure. It is worth noting...

... determination of the fracture gradient (FG) is crucial for maintaining wellbore integrity and preventing unintended formation fractures during drilling. The Leak-Off Test (LOT) is conducted after drilling below a new casing shoe to confirm the fracture pressure, represented by the equivalent mud weight (EMW...

... Abstract Thermally Induced Fracturing (TIF) relates to the fracture generation due to the horizontal stress reduction because of cold fluid injection. An evaluation of this complex phenomenon, which involves geomechanics, fluid dynamics in porous media, and thermodynamics, is essential in any...

... Abstract The analyses and modelling of fracture and fault systems finds since decades a wide range of applications in geothermal energy generation, mining, ground water management, CCSU, O&G Exploration and Production, Hydrogen storage, well stimulation, and civil and environmental...

... drilling and data gathered through organic and inorganic laboratory measurements. Formation evaluation challenges in highly fractured, stacked reservoirs with multiple source rocks and structural complexities which have complicated charging histories, are common in the Middle East. Finding additional pay...

... DYNAMIC RESERVOIR MODELING OF A CARBONATE, FRACTURED OIL FIELD (ROSPO MARE, ITALY): A NEW APPROACH FOR WELL HISTORY MATCHING AND PRODUCTION FORECAST Francesco Siliprandi, Giuseppe Bellentani, Luca Di Cesare, Energean Italy. This paper was presented at the 15th OMC Med Energy Conference...

... and fracture mechanics. The innovative solutions to be addressed in designing offshore pipelines are presented considering different transport scenarios and challenges like fluid composition, transport phase and the possibility to convert or not existing facilities. A very important topic addressed...

... with LWD imagers, both for water-base mud and oil-base mud have provided confidence in application of LWD images for various applications, similar to the wireline logging. Different interpretation apps like fracture quantification, secondary porosity, dip structure modeling, facies classification etc. can...

..., impurities), safety (leakage, dispersion, accidents), materials and operation (repair, inspections) are also covered. The main impact from hydrogen is assumed to be on fracture propagation and toughness. The main limit states were evaluated on this basis and modifications proposed. The intention...

... dolomitic clay and kerogen and has low to medium porosity. The presence of the fractures is main driver of the rock permeability. Borehole images is required to understand the fractures development and geological features in Najmah formation. High formation pressure and risk of wellbore stability...

... case history shale calcium carbonate drilling fluid chemistry wellbore instability instability invasion drilling fluid formulation commingle zubair shale sand sequence pore pressure transmission wellbore integrity drilling fluids and materials fracture drilling fluid selection...

.... ABSTRACT In a well-known field in Southern Europe, the top-hole sections, characterized by highly fractured carbonate formation, the operator successfully and safely drilled two wells with an engineered viscoelastic water-based drilling fluid that highly contributed to minimize formation losses and reduce...

..., fracture effectiveness, and completion design. The paper describes the methodology employed and the results obtained from the combined application of water tracers, oil tracers, and gas tracers in one multistage hydraulically fractured well. Additionally, the tracer design, operational logistics...

... ABSTRACT Proppant pack permeability is the primary factor that affects the productivity of a fractured well. In such operations, fracturing fluid (cross-linked or linear) is used to deposit the proppant. In order to transport proppant within the fracture, fracturing fluid rheological...

... ABSTRACT Natural fractures in reservoir rocks contribute significantly to productivity. Treatments for severe-to-total lost circulation in these type of scenarios can be especially challenging since they may require a greater particle size distribution to mitigate losses; on the other hand...

... with the help of multi-stage horizontal wells. Laboratory testing, which included scanning electron microscopy and X-ray diffraction were conducted to determine mineralogy and potential damage mechanisms. Fracturing fluid chemistry was tested and optimized using core plugs. Geomechanical rock properties derived...

... of its correlation in detecting open micro-fractures, faults, and more in general permeability patterns. The presence of helium in the reservoir could be associated to organic matter presence and to good sealing properties of the cap rock, being the atomic size of helium the smallest amongst the other...

... that not all wells are producing commercially and for that matter even wells that are producing commercially not all hydraulic fracture stages are contributing. This scenario is further compounded with the fact that unconventional resource development has a narrow profit margin for the E&P operators...

... in Emeraude field was the extremely low fracture gradient due to the depleted upper Senonian reservoir. The surface section was drilled with sea water, and for the intermediate section, the water-base mud (WBM) used was 1.08 g/cm3. During drilling the intermediate section of 12 ¼-in., total losses were...

... parameters on samples quality. The second step includes the cuttings analysis and characterisation, based on textural description and identification/classification of micro-fractures. A qualitative estimate of intensity of fracturing for single cutting (HIF) and for each section (IF) is defined. Finally...