Shale Gas Production Model

PRA is excited to announce a new module for BasinMod -- our shale gas simulator, the Shale Gas Production Model (SGPM). The SGPM was developed in conjunction with SiteLark LLC, creator of one of the industry’s first shale gas production and prediction simulators for both vertical and horizontal wells.

SGPM combines the deliverability of a multi-stage fractured horizontal well with overall mass conservation. Total production depends on amount of free gas, adsorbed gas, adsorption isotherm and diffusion process. It can be executed both in history match or forecast mode. The tuning parameter, bulk volume, provides an estimate of Stimulated Rock Volume (SRV). The SGPM may also be used to assess shale gas reserves.

Workflow

Intuitive, easy-to-use interface
Execution time within minutes
Matrix and fracture flow
Gas adsorption using Langmuir isotherms
Hydraulic fracturing-induced productivity calculation

Vertical Well Model

Input reservoir and fluid properties
Input production for calibration
Input two-phase and adsorption attributes
Input hydraulic fracture parameters
Predict gas and water production

Horizontal Well Model

Horizontal well with long laterals
Multiple stage fractures
History match past production and forecast future production potential
Evaluate production potential of a new well
Optimize lateral length and number stages for a new well

You can have a look at the SGPM in BasinMod 2011 with sample inputs and sample outputs. The SGPM is available for purchase as an add-on module for BasinMod.

See results from the SGPM at the Marcellus / Utica / Northeast North America Shales, Geosciences Technology Workshop, Baltimore, MD May 23 - 25, 2011

“New York State Utica Shale Gas Production Models for Vertical and “Hypothetical” Horizontal Hydraulically Fracture-Stimulated Wells“
Jay E. Leonard, Deepankar Biswas, et al.

Shale Gas Info

Langmuir Adsorption

Modeled Gas Rate.

Modeled Pressure Decline.

Relative Permeability.