Micro-mechanical modeling of perforating shock damage

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Shaped charge jet induced formation damage from perforation treatments hinders productivity. Manifestation of this damage is in the form of grain fragmentation resulting in fines that plug up pore throats along with the breakdown of inter-grain cementation. The authors use the Smooth Particle Hydrodynamic (SPH) computational method as a way to explicitly model, on a grain pore scale, the dynamic interactions of grains and grain/pores to calculate the damage resulting from perforation type stress wave loading. The SPH method is a continuum Lagrangian, meshless approach that features particles. Clusters of particles are used for each grain to provide representation of ... continued below

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16 p.

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Swift, R.P.; Krogh, K.E.; Behrmann, L.A. & Halleck, P.M. November 17, 1997.

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Shaped charge jet induced formation damage from perforation treatments hinders productivity. Manifestation of this damage is in the form of grain fragmentation resulting in fines that plug up pore throats along with the breakdown of inter-grain cementation. The authors use the Smooth Particle Hydrodynamic (SPH) computational method as a way to explicitly model, on a grain pore scale, the dynamic interactions of grains and grain/pores to calculate the damage resulting from perforation type stress wave loading. The SPH method is a continuum Lagrangian, meshless approach that features particles. Clusters of particles are used for each grain to provide representation of a grain pore structure that is similar to x-ray synchrotron microtomography images. Numerous damage models are available to portray fracture and fragmentation. In this paper the authors present the results of well defined impact loading on a grain pore structure that illustrate how the heterogeneity affects stress wave behavior and damage evolution. The SPH approach easily accommodates the coupling of multi-materials. Calculations for multi-material conditions with the pore space treated as a void, fluid filled, and/or clay filled show diverse effects on the stress wave propagation behavior and damage. SPH comparisons made with observed damage from recovered impacted sandstone samples in gas gun experiments show qualitatively the influence of stress intensity. The modeling approach presented here offers a unique way in concert with experiments to define a better understanding of formation damage resulting from perforation completion treatments.

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16 p.

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OSTI as DE98004246

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  • SPE formation damage control conference, Lafayette, IN (United States), 18-19 Feb 1998

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  • Other: DE98004246
  • Report No.: LA-UR--97-4841
  • Report No.: CONF-980226--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 650174
  • Archival Resource Key: ark:/67531/metadc706019

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  • November 17, 1997

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • Feb. 29, 2016, 9:50 p.m.

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Swift, R.P.; Krogh, K.E.; Behrmann, L.A. & Halleck, P.M. Micro-mechanical modeling of perforating shock damage, article, November 17, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc706019/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.