... the production, or over-stimulated zones, which might lead to softening of the wellbore rock and, with time, might have also a negative effect on production. The efficiency of a fracturing, acidizing, or re-fracturing treatment depends on maximizing its contact with the zone of interest and uniform distribution...

... on the analysis of several interference tests performed on a specific pad with three horizontal wells. So far, four interference tests were conducted with downhole pressure measurement. The first test had the objective of analyzing the interference between the wells after being fractured and first opened. After...

... Abstract Shale well performance depends mainly on stimulated reservoir volume (SRV) which is generated from the hydraulic fracture job. The hydraulic fracture requires a mixture of fluid and proppant per feet to increase well recovery factor. Production rate of shale wells is related...

... Abstract A huge variation in well performance was observed in Longmaxi shale gas wells, in Yongchuan block, Sichuan Basin. The Longmaxi shale was buried deeper than 3500 m with complex structures, in-situ stress, and natural fracture corridors, which makes well performance very uncertain...

... Abstract The Longmaxi shale gas play in Sichuan, China is unique due to multiple tectonic deformations in the geological history, which makes the shale play highly heterogenous and hydraulic fracturing execution problematic. The hydraulic fracturing design has matured after ten years’ evolution...

... Abstract The hydraulic fracturing technique is based on pumping a given fluid at a high pressure greater than the rupture pressure of the reservoir rock, which causes the creation of high permeability channels inside the rock. This process also makes the fluid contained in the formation flow...

... Abstract The reservoir pressure coefficient is over 1.80 in the Kelasu foreland area in western China. Heavy mud weighted by ultra-micro barite is used to kill wells for downhole operations. For the wells that have been fractured, the mud easily leaks into fractures, bringing the barite...

... If a simulation cell contains several matrix blocks with different sizes, it is difficult to perform an accurate flow simulation with an equivalent block size. In particular, the fractures near faults or hydraulically fractured wells are not uniformly distributed, and they cannot be homogenized...

... Abstract Unconventional reservoirs have been defined as formations that cannot be produced at economic flow rates or that do not produce economic volumes of oil and gas without horizontal well with hydraulic fracture treatments. Horizontal well fracturing efficiency in unconventional reservoirs...

... Historical production data used to calibrate parent well which was hydraulically fractured, Create discrete simulated scenarios reflect induced fracture complexity caused by different treatment design scenarios. There have been many field trials (also known as pilot projects...

... presents different challenges and particularities, such us abnormal behaviors that should be addressed with different interpretation tools. During this stage, the effort is focused on conciliating the theory behind the generation and detection of micro-seismic events and the theory of hydraulic fracturing...

... Abstract Some wells in ultra-deep fractured tight gas formation are faced with severe sand production problems in west china. It is important to study the mechanical properties of fractured sandstone. Based on triaxial compression experiments on cores from fractured tight sandstone reservoirs...

...Introduction The following work-flow was proposed, Fig. 5 : Fracture Design The technical data necessary to run the fracture design includes: well completion information, formation data, logs, etc. Wells were completed with a monobore 4 ½-in. casing, one vertical and the other...

...3D Seismic analysis The presence of natural fractures in Quintuco Formation has been associated with drilling risks in the past. In this section, a methodology for predicting these natural fracture corridors using seismic data and calibrated using dual-OBMI well data observations are presented...

... multifracture horizontal well? Source: SPE 177293 Abstract The objective of this work is to present an integrated methodology/workflow for optimizing lateral well spacing and fracture spacing for unconventional reservoirs based on multiple experience in Marcellus shale gas development. Optimal...

... in previous work published by the authors. The methodology consists on a novel operative sequence to enhance oil production in multi-stage fractured Tight/Shale Oil scenarios involving countercurrent water imbibition processes and consists of a cyclic scheme of (i) high pressure water injection, (ii) soaking...

.... Abstract Naturally fractured reservoirs such as the Marcellus shale require an integrated reservoir modeling approach to determine well spacing and well-to-well interference. The Marcellus Shale Energy and Environment Laboratory (MSEEL) is a joint project between universities, companies, and government...

... Abstract Naturally fractured shale reservoirs are characterized by a complex 3D discrete fracture network (DFN). DFN density in different stratigraphic layers imposes variability in hydraulic fracture geometry as the hydraulic fracture propagates in the laminated shale reservoirs. The study...

... This work is inspired by a program sponsored by the US Department of Energy (DOE) to investigate natural gas as an alternate for N 2 and CO 2 in foamed fracturing fluids. At first, the project focused on identifying a thermodynamic pathway to utilize natural gas (NG) obtained from producing...

... on horizontal wells-orthogonal fractures interface which, in Argentina, has not been properly evaluated, leading us to underestimate the production loss by using the status quo of approved technologies for our projects. Big thicknesses increase the pressure loss effects due to flow convergence from...