KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
Earth Science and Engineering Program
Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC)
MetadataShow full item record
AbstractHydrofracturing to recover natural gas and oil relies on the creation of a fracture network with pressurized water. We analyze the creation of the network in two ways. First, we assemble a collection of analytical estimates for pressure-driven crack motion in simple geometries, including crack speed as a function of length, energy dissipated by fluid viscosity and used to break rock, and the conditions under which a second crack will initiate while a first is running. We develop a pseudo-three-dimensional numerical model that couples fluid motion with solid mechanics and can generate branching crack structures not specified in advance. One of our main conclusions is that the typical spacing between fractures must be on the order of a meter, and this conclusion arises in two separate ways. First, it arises from analysis of gas production rates, given the diffusion constants for gas in the rock. Second, it arises from the number of fractures that should be generated given the scale of the affected region and the amounts of water pumped into the rock.
CitationSimple models of the hydrofracture process 2015, 92 (6) Physical Review E
PublisherAmerican Physical Society (APS)
JournalPhysical Review E
- Growth model for large branched three-dimensional hydraulic crack system in gas or oil shale.
- Authors: Chau VT, Bažant ZP, Su Y
- Issue date: 2016 Oct 13
- Visualization of fluid occupancy in a rough fracture using micro-tomography.
- Authors: Karpyn ZT, Grader AS, Halleck PM
- Issue date: 2007 Mar 1
- Upflow anaerobic sludge blanket reactor--a review.
- Authors: Bal AS, Dhagat NN
- Issue date: 2001 Apr
- Impact of fluid-rock chemical interactions on tracer transport in fractured rocks.
- Authors: Mukhopadhyay S, Liu HH, Spycher N, Kennedy BM
- Issue date: 2013 Nov
- Dynamics of surfactant-driven fracture of particle rafts.
- Authors: Vella D, Kim HY, Aussillous P, Mahadevan L
- Issue date: 2006 May 5