An evaluation of the effects of fracture diagenesis on hydraulic fracturing treatment

Dae Sung Lee, Derek Elsworth, Yasuhara Hideaki, Junhyung Choi, Wiri Heo

Research output: Contribution to conferencePaperpeer-review

Abstract

The rates and magnitudes of fracture diagenesis on commercially available proppants were determined from flow through experiments at difference stresses (depths) and temperatures and for hydraulically-open and –closed systems. A lumped-parameter conceptual model addressing diagenetic compaction is extended to accommodate the specific nature of the compaction of the designated proppant. Mechanisms include mineral dissolution, transport, and re-precipitation of the resulting products in the particle interstices, resulting in a loss of porosity in proppant packs. The model used recovered thermodynamic and kinetic data for mineralogical composition of available proppants within rigid walled hydrothermal and thermomechanical reactors. Under reservoir temperatures of 135 to 191oC and stresses to 65.5 MPa, these ensemble data suggest that proppant packs may compact by up to 10%, resulting in porosity loss of up to 30%, and lose 75% of initial permeability. This may occur over a period of the order of 3 years. These predictions are consistent with observations from active wells where production may decrease to 10% over the period of a few years.

Original languageEnglish (US)
Pages343-347
Number of pages5
StatePublished - Jan 1 2012
Event7th Asian Rock Mechanics Symposium, ARMS 2012 - Seoul, Korea, Republic of
Duration: Oct 15 2012Oct 19 2012

Other

Other7th Asian Rock Mechanics Symposium, ARMS 2012
CountryKorea, Republic of
CitySeoul
Period10/15/1210/19/12

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

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