... A scanning electron microscope (SEM) was used to observe the substructure morphology of shale. Micro-cracks and micro-pores were noticed inside shale sample, as illustrated in Fig. 1 . The width of the micro-cracks ranged between 0.5 to 3 μm. Subsequently, some of these fractures in shale...

... shale power relation reservoir hydraulic fracturing fracturing materials bi-wing fracture Exhibition Saudi Arabia linear gel permeability proppant tight sandstone rock ppt linear gel crosslinked gel fracture tight gas reservoir Upstream Oil & Gas viscosity sandstone breakdown...

... stability issues, stuck pipe incidents, and induced severe losses. Additional problems experienced while drilling include shale dispersion, resulting in fine solids buildup in the drilling fluid, and the adherence of shale to the drill pipe and bit, reducing penetration rates. The customized drilling...

... log analysis complete workflow shale kerogen equation Introduction Unconventional reservoirs have low porosity and permeability, making it difficult to produce from them. Generally, enhanced reservoir techniques, such as fracture stimulation or steam injection, are necessary to produce...

... Abstract The Khafji and Ahmadi shales in Saudi Arabia are highly dispersive, tectonically stressed formations and tend to result in wellbore instability after prolonged exposure to conventional water-based drilling fluid systems. These time-sensitive formations can cause sloughing shale...

... Abstract Shale instability is a major problem for drilling operation. Shales make up over 75% of drilled formations and are responsible for 90% of wellbore instability problems. There are many problem associated with shale drilling such as wellbore instability, cuttings dispersion, stuck pipe...

... obtained from the geomechanical model shows that Zubair sections of planned wells would have narrow mud weight windows. The analyses also emphasized that the shale interbeds in the Zubair section require a mud weight of 1.5g/cc to limit wellbore breakouts. The presented study highlights...

... reservoirs such as shale, tight sandstone, and tight carbonates. Artificial Intelligence flow in porous media rock property Upstream Oil & Gas net stress Reservoir Characterization Fluid Dynamics mathematical model teklu core sample permeability hysteresis permeability porosity Zhou...

... Abstract Shale drilling problems are major sources of non-productive time in drilling operations. The use of water-based drilling fluids to drill shale formations can cause wellbore stability problems such as swelling, dispersion and heaving as a result of the reaction of water with clay...

... Abstract This paper reports the laboratory study to check the influence of water content, amount, distribution, and water types, on shale reactivity. Even though it is known that any change in water content affects shale behavior, quantification had not previously been attempted. A new method...

... Abstract The Middle Ordovician (Middle to Late Cardocian) Hanadir Shale member of the Qasim Formation is a potential shale gas exploration target. This paper quantitatively characterizes the mineralogy of the Hanadir Shale using an applied methodology to better understand the interrelationship...

... wells target location and enable the well planner to anticipate the location and the potential magnitude of the possible abnormal pressure problems for future drilling plans and consequently minimizing drilling cost. Wellbore instability, particularly in shale formations, is a major challenge...

... on the volume of shale (Vsh) estimation, which has an impact on the effective porosity calculations. From real-time 16-bin spectral gamma ray data and X-Y magnetometers to track the detectors azimuthal position, a high resolution image is preferred — over the standard gamma ray — for properly identifying...

... applied to evaluate challenging shale gas reservoirs. The new measurements quantify key mineral-forming elements with higher precision and accuracy than previously possible. The new technology provides a direct determination of total organic carbon (TOC), which is an important parameter in the evaluation...

...-bedded shales where the main reservoirs are primarily composed of coarse to fine grained sandstones with thin shale and siltstone intercalations with some lateral barriers (faulting) as captured by seismic data. For the purpose of this study, the fields have been subdivided into several assessment areas...

... fluid filtration is very thin, which implies high potential for reducing the differential pressure sticking problem and formation damage while drilling. While drilling shales formations with nanodarcy (nD) permeability, Nanoparticles can be added to the drilling fluids to minimize shale permeability...

... very hard sandstones, mixed sand and shale layers, and limestone to dolomitic carbonates. sidewall core sample information core plug drilling operation core analysis Saudi Arabia core sample Reservoir Characterization sandstone spe 168068 acquisition rotary sidewall shale Upstream...

... Abstract All Shale Gas reservoirs are not the same. There are no typical Tight Gas reservoirs. These two statements can be found numerous times in the literature on shale gas and tight gas reservoirs. The one common aspect of developing these unconventional resources is that wells in both must...

... Abstract Shale Gas/ Oil exploration is getting more and more attention as the existing fields, are in mature stage of production, therefore, time has come for finding the alternate energy resources. Shale gas is one of the future energy resources Therefore, it is essential to address...

... logging strength sandstone shale mechanical property rock mechanical property empirical equation rock strength limestone lithology core sample equation reservoir geomechanics structural geology correlation porosity algorithm correlation coefficient Introduction Log-based strength...