... with potential benefit of enhanced gas recovery (EGR). The performance of CO 2 injection and CH 4 recovery in shale reservoirs is a complex function of several engineering parameters including fracture half-length, fracture conductivity, and fracture height, operating parameters such as injection volume...

... of fracture asymmetry and increase EUR. hydraulic fracturing Reservoir Characterization Simulation modeling reservoir geomechanics pore pressure effective fracture half-length pressure depletion fracture wing asymmetry permeability production model pressure distribution fracture wing parent...

...) and long term performance of the wells by estimating EURs. The most common challenge in history-matching of production in shale gas/oil wells has been the non-uniqueness of the history-matched parameters. A lot of emphasis has been put on estimation of fracture half-length, which is believed...

... with fewer frac stages and/or within areas with high-stress anisotropic ratio. To characterize such isolated SRV scenarios, three parameters—fracture half-length, SRV permeability, and the half-width for each isolated SRV—must be inferred from the analysis, which creates a difficult challenge...

... fracture half-length can be estimated. However, as pointed out by Clarkson (2012b) there is a large degree of uncertainty in this type of analysis as a result of the number of unknowns which are being adjusted to provide an adequate history match. To better understand the uncertainty and the impact...

... pressure transient testing diagnostic plot fracture half-length pressure transient analysis drillstem/well testing fraction 0 application wattenbarger drillstem testing compressibility psi -day conductivity upstream oil & gas unconventional reservoir reservoir pressure society...

... From the base case, fracture half-length, permeability, and fracture spacing were varied to ascertain optimal well spacing for each property. The following lists show the variations which are intended to be the extremes for the variables in the Marcellus and Haynesville plays: Abstract...

... be used to calculate the product of fracture half-length and square root of permeability. In this paper, linear flow from a fractured well in tight/shale gas reservoir under a constant flowing pressure constraint is studied. It is shown that the slope of square root-time plot results in an overestimation...

..., the square root-time plots for these cases depend on gas production rate and for some cases it does not appear as a straight line during linear flow. Finally, it is found that there is excellent agreement between the fracture half-lengths obtained using this method and the input fracture half-lengths...

... the model and demonstrate the value of this approach. drillstem testing log-log diagnostic plot determination hydraulic fracturing drillstem/well testing fracture half-length pressure transient testing fracture fluid efficiency leak-off coefficient fracture fracture-injection falloff test...

... the location of microseismic events. This paper presents the agreements and differences observed between the stress models developed (and fracture diversion/limited entry observations), fracture half-lengths (from fracture modeling and production analysis), microseismic events and current geological...

... The dimensions of such an idealized rectangle SRV are: h SRV ≤ h: the maximum height of the SRV is the reservoir thickness w SRV =2x f + x s /2 : the width of the SRV is the fracture length (twice fracture half-length plus an estimated distance the pressure penetrates beyond...

... show that most fractures have much lower fracture conductivities and much shorter fracture half-lengths than that of the design values. (Analysis methods and short post-fracture producing time prior to a welltest can also contribute to calculation of lower fracture conductivity and shorter fracture...

... proppants, fluid types and design schedules were analyzed to quantify the impact of these designs on productive fracture half-lengths and conductivity. Calibrated fracture propagation models were also utilized to relate these productive properties (fracture length, conductivity and permeability) to stress...

... the commingled stage analysis of the horizontal wells is completed, the total interpreted effective hydraulic fracture half-length may be allocated amongst the stages using a combination of production logs and tracer logs. The primary contribution of the current work is the presentation of workflows...

... quality Reservoir Surveillance proppant Thickness normalization fracturing materials hydraulic fracturing Fluid Dynamics stimulation investigation effective fracture length fracture half-length production monitoring flow in porous media Upstream Oil & Gas production normalized recovery...

... subroutine Completion Installation and Operations optimal fracture half-length proppant reservoir perforation horizontal stress contrast structural geology united states government operator permeability complex reservoir shot density recommendation fracture stress contrast tight gas fracture...

... For vertical wells, recommended matching parameters are permeability, skin factor, and drainage area. For hydraulically fractured wells, permeability, fracture half-length, fracture conductivity, and drainage area are available for use as matching parameters. Because it is often difficult to distinguish...

... is presented. The multiple-fracture solution is derived using a new uniform-flux solution for a single arbitrarily-oriented fracture in an anisotropic reservoir. The variables in this solution are: fracture half-length, fracture conductivity, and fracture angle of rotation for each fracture relative...

... & Gas Modeling & Simulation complex reservoir production log variation fracture half-length History gas reservoir stimulation effectiveness hydraulic fracturing Fluid Dynamics fracture conductivity proppant conductivity reservoir permeability reservoir simulation sample size history...