Show simple item record

dc.contributor.authorIglauer, Stefan
dc.contributor.authorRahman, T.
dc.contributor.authorSarmadivaleh, M.
dc.contributor.authorAl Hinai, A.
dc.contributor.authorFerno, M.
dc.contributor.authorLebedev, Maxim
dc.date.accessioned2017-01-30T11:51:12Z
dc.date.available2017-01-30T11:51:12Z
dc.date.created2016-06-02T19:30:14Z
dc.date.issued2016
dc.date.submitted2016-06-03
dc.identifier.citationIglauer, S. and Rahman, T. and Sarmadivaleh, M. and Al Hinai, A. and Ferno, M. and Lebedev, M. 2016. Influence of Wettability on Residual Gas Trapping and Enhanced Oil Recovery in Three-Phase Flow: A Pore-Scale Analysis by Use of Microcomputed Tomography. SPE Journal. [In Press].
dc.identifier.urihttp://hdl.handle.net/20.500.11937/15657
dc.identifier.doi10.2118/179727-PA
dc.description.abstract

We imaged an intermediate-wet sandstone in three dimensions at high resolution (1–3.4 μm3) with X-ray microcomputed tomography (micro-CT) at various saturation states. Initially the core was at connate-water saturation and contained a large amount of oil (94%), which was produced by a waterflood [recovery factor Rf = 52% of original oil in place (OOIP)] or a direct gas flood (Rf = 66% of OOIP). Subsequent waterflooding and/or gasflooding (water-alternating-gas process) resulted in significant incremental-oil recovery (Rf = 71% of OOIP), whereas a substantial amount of gas could be stored (approximately 50%)—significantly more than in an analog water-wet plug. The oil- and gas-cluster-size distributions were measured and followed a power-law correlation N ∝ V–τ, where N is the frequency with which clusters of volume V are counted, and with decays exponents τ between 0.7 and 1.7. Furthermore, the cluster volume V plotted against cluster surface area A also correlated with a power-law correlation A ∝ Vp, and p was always ≈ 0.75. The measured τ and p-values are significantly smaller than predicted by percolation theory, which predicts p ≈ 1 and τ = 2.189; this raises increasing doubts regarding the applicability of simple percolation models. In addition, we measured curvatures and capillary pressures of the oil and gas bubbles in situ, and analyzed the detailed pore-scale fluid configurations. The complex variations in fluid curvatures, capillary pressures, and the fluid/fluid or fluid/fluid/fluid pore-scale configurations (exact spatial locations also in relation to each other and the rock surface) are the origin of the well-known complexity of three-phase flow through rock.

dc.publisherSociety of Petroleum Engineers
dc.titleInfluence of Wettability on Residual Gas Trapping and Enhanced Oil Recovery in Three-Phase Flow: A Pore-Scale Analysis by Use of Microcomputed Tomography
dc.typeJournal Article
dcterms.dateSubmitted2016-06-03
dcterms.source.volumeRe-print
dcterms.source.startPage1
dcterms.source.endPage14
dcterms.source.issn0036-1844
dcterms.source.titleSPE Journal
curtin.digitool.pid240748
curtin.pubStatusPublished
curtin.refereedTRUE
curtin.departmentDepartment of Petroleum Engineering
curtin.identifier.scriptidPUB-SE-DPE-SI-93926
curtin.identifier.elementsidELEMENTS-128644
curtin.accessStatusFulltext not available


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record