..., 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...

... process, such as matrix permeability, hydraulic fracture dimensions and assuming infinite fracture conductivity. The algorithms provided can quantify the effect of changes in fracture spacing on the production performance of both parent and child wells. All results are based on benchmarked analytical...

... solution applying breakthrough stimulation and diversion processes to increase oil production in a tight carbonate formation, offshore Black Sea. Because operators are shifting strategy in a low oil price environment from new well drilling toward well interventions, refracturing is gaining more focus...

... Sweet spot identification, delineating the reservoir extent, characterization of rock mechanics, geology, reservoir petrophysics, drilling and completion design, and production forecasting are the major steps in identifying a commercial success in unconventional reservoir exploration. Despite...

... uncertainty exists in uneven propped fracture, this paper examines the impact of proppant distribution and fracture conductivity variation on the gas productivity for shale gas reservoirs, by developing a reservoir simulation model. In this paper, numerical reservoir simulation, which involves application...

... 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 Cross-linked hydraulic fracturing fluid gel can induce high damage in the fracture when left for a long time. Any residual gel not produced back reduces the conductivity of the fracture and the well productivity, leading to an extended flowback for a cleanup operation, which...

... 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...

... Abstract Horizontal wells are a proven and well acknowledged technology to enhance well productivity through an increase in reservoir contact compared to that of a vertical well under the same conditions. In the last three decades, a considerable effort has been directed to study flow around...

... 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...

... Abstract Significant reduction in well productivity of gas-condensate reservoirs occurs owing to reduced gas mobility arising from the presence of condensate/water liquid phases around the wellbore. As wettability modifiers, fluorinated chemicals are capable of delivering a good level of oil...

... 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...

... well deliverability. Overall, net-to-gross is estimated to be around 30-40%. Reservoir quality based on core and well test data ranges between 1 and 150 mD, with the average being around 10 mD. This type of reservoir tends to have a distinctive production profile. See Figure 3 . Abstract...

... 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. Several of these wells...

... 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...

... 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...

... 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 is high temperature (320 °F), multi-layered over pressured retrograde gas condensate reservoirs ranging from 10-90ft net thickness and permeability of 0.1 – 3.0 mD. It was developed through multi-staged propped hydraulic fracturing to improve well deliverability and to mitigate productivity...