..., these studies have seldom considered the impact of reactive fluid systems. In this work, a model was developed to explain acid distribution in hydraulic and intersecting natural fractures. This model was then used to optimize acid fracture design parameters based on the goal of maximizing productivity...

... Abstract The Alvheim field, offshore Norway, has subsea wells with long horizontal branches completed with sand screens. After 10 years of production, water production starts to constrain the oil production. Mechanical water shut-off is impossible in these wells, hence other methods...

... on the perforation cluster spacing), the fracture plane dimensions (half-length and height, estimated to be effectively propped and contributing to the drainage of the reservoir), initial reservoir pressure and bottom-hole pressure (BHP) during production. A constant BHP is assumed as is commonly the case when...

... hydraulic fracturing drainage pilot well interference re-fracturing surface area Exhibition new fracture cumulative production completion operation proppant cycle reservoir lebada field proppant candidate selection relative degree Upstream Oil & Gas wellbore decision...

... is easily identified, operators classify this layer as the Wolfcamp D. Well Performance Review in the Permian Abstract Inconsistent production performance from wells completed in similar pay zones has been observed when shale formations are exploited through horizontal wells. Ineffective...

... to recover gas due to the complexity of flow and storage mechanisms in shale gas reservoir. Achieving effective well stimulation and economic production hinges on multiple long hydraulic fractures and sufficient fracture conductivity ( Warpinski et al 2008 ; Pope, C. et al 2009 ; Cipolla CL et al 2009...

... large volumes of fracturing fluids aimed for a long fracture The other reason is due to the production of the formation water in case of Well-A. Those two wells are also drilled in a tighter area compared to Well-C making the fracturing fluid flowback more difficult. The ineffective polymer recovery...

... customized treatments for each zone and more aggressive fracturing schedules to promote high fracture conductivity or length when necessary. Successful production from the mature Ecuadorian field was achieved using the multistage hydraulic fracturing HJAF method. Additionally, this method does not require...

... Abstract The Lago Agrio field is a mature field in Ecuador. Since 1972, exploitation has been focused on the Hollin reservoir, resulting in a low recovery factor in other reservoirs. The lack of interest in some zones is a result of poor or no productivity obtained during initial production...

... complex reservoir Upstream Oil & Gas reservoir simulation condensate reservoir Directional Drilling Jamiolahmady flow in porous media drilling operation effective wellbore radius Well Productivity fluid property wellbore radius mass flow rate Fluid Dynamics calculation gas...

... Abstract Wellbore completions are a key well component and could have a positive or a negative impact on productivity, thus designing a suitable completion and implementing it properly must be a priority for production engineers. Consequently, well productivity indices related to specific...

... this chemical solution for a field trial to remediate the uneconomic productivity of a well located in Lower Morrow sandstone reservoir in Oklahoma, which was suffering from liquid blockage. A four-fold increase in gas production was reported for the 6 month production period after treatment. Ahmadi et al...

... in a single lateral horizontal well or commingled production from different laterals in a multilateral well. An intelligent completion can be equipped with permanent downhole measurement equipment which transmits real-time pressure and temperature data to the engineer's desktop. The genesis of the intelligent...

... discovery, UKCS block 29/8 in the Central North Sea. Significant STOIIP has been mapped in the continental sandstones of the Triassic-age, Skagerrak formation, where reservoir connectivity and resulting commercial productivity was the key uncertainty. A high-angle well was drilled to maximise reservoir...

... Abstract Unexpected high water cut, sand production and low productivity have negatively affected multiple wells producing from reservoirs in the Apure Area fields of southwest Venezuela. As a result, multiple well interventions have been conducted which increase costs and delay oil production...

... are a compilation of the results from numerous simulator runs for black oil, gas condensate, and gas cases. These simulator runs included sensitivities on well type and permeability to compare recovery and production. Important conclusions pertaining to the recovery of hydrocarbon from low-permeability reservoirs...

... Abstract Oil production from offshore Lebada field has been improved significantly over the last two years through the use of multiple proppant fractures placed from horizontal completions. Following early successes the engineering effort now focuses on increasing value through engineering...

... Abstract The potential for shale formations as a source of gas production has been recognized. However, shale permeability in a nano-Darcy scale represents a significant technological challenge to recover trapped hydrocarbon effectively. The fracturing of wells has been widely used to enhance...

... was postponed because most of the wells showed poor productivity. The reasons for the low recovery (around 3%) have never been thoroughly understood. Various hypotheses have been proposed to explain the deficient performance such as partial closing of the fractures with declining reservoir pressure (bubble...

...-sand dew point is only about 100 psia below the initial pressure and hence condensate dropout near the wellbore is expected to begin almost immediately after the start of production. Production tests performed on Angsi-2 appraisal well revealed a very low permeability (<0.01 – 3 mD) with gas...