Measurement of inflow performance parameters for coal seam and Devonian shale gas reservoirs and its implication in numerical reservoir simulation

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper describes potential inconsistencies between the traditional methods used to estimate inflow performance parameters for conventional gas reservoirs and the way these parameters are used in analysing coal seam and Devonian shale gas reservoirs, particularly in numerical reservoir studies. These inconsistencies arise because of the unique reservoir characteristics and mechanisms associated with unconventional gas reservoirs. For unconventional gas reservoirs undergoing non-equilibrium (dual-porosity) desorption, inflow performance parameters measured from deliverability tests may not be appropriate for numerical reservoir simulation. This is because the static pressures used in deliverability testing are influenced by the effects of pressure depletion in the fractures (during flowing conditions) and blow-down from the rock matrix (during shut-in). Under flowing conditions, the inflow performance in numerical reservoir simulators is governed solely by the cleat (fracture) pressure of the grid block. Consequently, if a non-equilibrium desorption formulation is used in the simulation study, then the use of inflow performance parameters derived by deliverability testing may yield erroneous results. The inconsistencies and analysis techniques discussed in this paper are applicable for all reservoir studies involving the inflow performance from unconventional gas reservoirs (analytical or numerical), however, they are more critical for numerical studies. These techniques are believed to be useful for understanding the need for representative inflow performance parameters for unconventional gas reservoirs.

Original languageEnglish (US)
Title of host publicationReservoir Engineering
Editors Anon
PublisherPubl by Society of Petroleum Engineers (SPE)
Pages233-248
Number of pages16
VolumeSigma
StatePublished - 1993
EventProceedings of the SPE Annual Technical Conference and Exhibition. Part 3 (of 5) - Houston, TX, USA
Duration: Oct 3 1993Oct 6 1993

Other

OtherProceedings of the SPE Annual Technical Conference and Exhibition. Part 3 (of 5)
CityHouston, TX, USA
Period10/3/9310/6/93

Fingerprint

coal seam
inflow
Coal
Gases
simulation
Desorption
desorption
Testing
dual porosity
Porosity
Simulators
Rocks
simulator
gas reservoir
parameter
shale gas
Shale gas
matrix
rock

All Science Journal Classification (ASJC) codes

  • Geology
  • Geotechnical Engineering and Engineering Geology

Cite this

King, G. R. (1993). Measurement of inflow performance parameters for coal seam and Devonian shale gas reservoirs and its implication in numerical reservoir simulation. In Anon (Ed.), Reservoir Engineering (Vol. Sigma, pp. 233-248). Publ by Society of Petroleum Engineers (SPE).
King, Gregory R. / Measurement of inflow performance parameters for coal seam and Devonian shale gas reservoirs and its implication in numerical reservoir simulation. Reservoir Engineering. editor / Anon. Vol. Sigma Publ by Society of Petroleum Engineers (SPE), 1993. pp. 233-248
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King, GR 1993, Measurement of inflow performance parameters for coal seam and Devonian shale gas reservoirs and its implication in numerical reservoir simulation. in Anon (ed.), Reservoir Engineering. vol. Sigma, Publ by Society of Petroleum Engineers (SPE), pp. 233-248, Proceedings of the SPE Annual Technical Conference and Exhibition. Part 3 (of 5), Houston, TX, USA, 10/3/93.

Measurement of inflow performance parameters for coal seam and Devonian shale gas reservoirs and its implication in numerical reservoir simulation. / King, Gregory R.

Reservoir Engineering. ed. / Anon. Vol. Sigma Publ by Society of Petroleum Engineers (SPE), 1993. p. 233-248.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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King GR. Measurement of inflow performance parameters for coal seam and Devonian shale gas reservoirs and its implication in numerical reservoir simulation. In Anon, editor, Reservoir Engineering. Vol. Sigma. Publ by Society of Petroleum Engineers (SPE). 1993. p. 233-248