High-Fidelity Microseismic-Data Acquisition in the Midland Basin Wolfcamp Shale Play

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In the Permian Wolfcamp shale formation in west Texas, density fields of microseismic events were mapped in four dimensions and variations were noted in the geometry of the hydraulic stimulation as well as in the development of pressure away from the perforations. In addition to aiding well-spacing decisions, these data were used to study individual-well geometries and compare variations in the microseismic response between adjacent wells.

Results

The data sets demonstrate that high-­fidelity microseismic data can be acquired by use of downhole tractored and multiobservational well-imaging techniques to understand stimulations and the stress fields better as indicated by microseismic data. The data are called high-fidelity because, in general, they are excellent data that are consistent and conform to standard understandings of stimulations. Beyond the robustness in event counts, the data typically have a high signal/noise ratio with high-quality waveforms for picking and consistent hodograms across the tools within the array. Additionally, the P– and S-wave picks are orthogonal to each other and often include the P amplitude and the horizontal (Sh) and vertical (SvS amplitudes.

This article, written by Special Publications Editor Adam Wilson, contains highlights of paper SPE 178715, “High-Fidelity Microseismic-Data Acquisition in the Midland Basin Wolfcamp Shale Play,” by Robert Hull, Robert Meek, Brian Wright, Hallie Meighan, Jake Lempges, and Austin von der Hoya, Pioneer Natural Resources, prepared for the 2015 Unconventional Resources Technology Conference, San Antonio, Texas, USA, 20–22 July. The paper has not been peer reviewed.
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High-Fidelity Microseismic-Data Acquisition in the Midland Basin Wolfcamp Shale Play

10 February 2016

Volume: 68 | Issue: 3

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