... precluding the need for artificial lift. modeling & simulation complex reservoir injected gas shale gas upstream oil & gas shale oil oil shale supereor process oil production forecast superior shale eor application operator eor operation fracture bottomhole pressure unconventional...

... Abstract In a producing shale reservoir, in-situ stress redistribution depends on the fluid drainage rates controlled by the complex hydraulic-natural fracture networks. Due to the ubiquitous occurrence of natural fractures, the pressure and stress changes from a fully-connected fracture...

... Abstract In recent years, shale gas development has expanded rapidly. For a shale reservoir with low porosity and ultra-low permeability, multi-cluster fracturing with a high pump rate, large fracturing fluid volume and a low fluid viscosity is the key technology to increasing shale gas...

... Abstract In this paper, the width and length of a hydraulic fracture are estimated from the analysis of wave propagation from an active to an offset well. The method is based on a Krauklis wave model, which describes acoustic waves, propagating in a narrow layer, filled with a viscous fluid...

... Abstract Unconventional or tight reservoirs are typically developed with horizontal well technology to effectively exploit the reserves, which could not have been economical with conventional vertical wells. These horizontal wellbores are completed with large multiple hydraulic fracture...

... the conventional stimulation strategies, the eight wells in one pad were all treated using higher intensity stimulation strategies. The average spacing between treated stages ranges from 85 m to 91 m, with tighter cluster spacing. Fracturing was temporarily plugged to passively treat sever deformation in two...

... Abstract As most of the obvious hydrocarbon exploration targets have already been explored and are being produced, unlocking additional resources requires considering higher risk play types. Due to several recent success stories around the world, fractured basements have attracted and increased...

... to the fatigue fracture. Additionally, the drilling fluid with corrosive medium may accelerate the process of fatigue failure. Titanium drill pipe with stronger corrosion resistance, lighter weight and better flexibility may help prolong the fatigue life of drill pipe in these extreme situations. Therefore...

... Abstract Proppant transport and distribution within fractures is an important part in hydraulic fracturing. At present, the majority of the experiments and simulations are applied to parallel planar fracture consideration. The transport and distribution of proppant within tortuous fractures...

... Abstract Shale gas horizontal well productions vary from hundreds of m 3 /day to 1 million m 3 /day, however, there are no significate variations in the reservoir petrophysical properties, such as TOC, porosity and gas content, etc. Natural fractures play an important role in the performance...

... Abstract Multiple transverse fractures initiated in a horizontal wellbore are the most effective method to maximize formation contact and access reserves in unconventional reservoirs. Most horizontal well operations in unconventional reservoirs utilize multi-stage/multi-cluster plug...

... fracturing of infill wells. Investigating the influence of fracture interference on the well performance of both older and infill wells is significant for progressing fracturing design and economic evaluation. In this study, a numerical model is developed, including two older wells and an infill well...

... Abstract The commercial development of unconventional oil and gas reservoirs using multiply fractured horizontal wells is vital to meeting the world's energy demand. However, the modeling of hydraulic fracture propagation and the production from such fractured wells still poses a challenge...

... Abstract Different techniques have been used to evaluate fracture geometry and completion efficiency including chemical tracers, microseismic, fiber optics, and production logs. Most of these methods are analyzed post-stage and are time and cost-consuming processes. This study presents a new...

..., alternative propped hydraulic fracture designs were tested in three trial wells attempting to ultimately achieve economic production from S1 and H8. One trial well used a conventional nitrogen-energized guar fracturing fluid but with a larger overall job size. A second trial well tested a cleaner hybrid fluid...

... Abstract Clean water fracturing, where clean water is used as fracturing fluid, has the advantages of low damage and low cost. The proppant carrying capacity is a key factor for successful clean water fracturing treatment. Although a lot of experimental work has been carried out, the proppant...

... Abstract One of the challenges when performing hydraulic fracturing is treating reservoirs that are close to a water-bearing zone. Unfortunately, uncontrolled fracture height growth adversely affects many treatments and often increases the probability of water influx. This risk of fracture...

... Abstract Screenout of micro-proppants in narrow fractures is a significant issue for this emerging stimulation technique, however the predictive tools currently used in hydraulic fracturing simulators are inadequate. This work investigates screenout using numerical simulations. Data from...

...-permeability resources, horizontal well drilling and hydraulic fracturing technologies are widely used, relying on long sections of horizontal wells in the reservoir, and the hydraulic fracture formed by wellbore stimulation as an "underground highway" for the flow of oil and gas from the deep reservoir...

... Abstract Economical development of unconventional resources continues demanding applications of new and innovative technologies. The Hydraulic Fracturing Test Site (HFTS-1) in the Midland Basin provides a unique dataset to further our understanding of fracture dynamics and its relationship...