Simultaneous use of microseismic monitoring and DAS-strain measurements to analyze the anatomy of a hydraulic stimulation in the Marcellus Shale

Starr, Joel (EQT Production) | Jacobi, Robert (EQT Production)


Microseismic monitoring and data from distributed acoustic sensing (DAS) can yield two independent measurements of the strain response to hydraulic stimulation of geologic formations. Microseismic monitoring provides a map of where, when and how the rock has catastrophically failed. DAS measurements from an optical fiber cable embedded in a horizontal well, adjacent to the stimulated well, can determine the relative strain response of the geologic formation that is in contact with the well bore. The strain response is not limited to rock failure and can respond to both dynamic and static deformation. However, DAS data are limited to the line defined by the spatial coordinates of the optical fiber cable and, in this configuration, cannot give a three-dimensional view of the strain response. By utilizing both DAS and microseismic data simultaneously and viewing both datasets in the same coordinate system, a more complete understanding of the rock response to hydraulic stimulation can be obtained.

Presentation Date: Wednesday, September 27, 2017

Start Time: 3:05 PM

Location: 362D

Presentation Type: ORAL