Thla'paper wea aekcted for praaentalion by an SPE Program Committee followingreview of informatkmcontained in en ebatract aubmltted by the author(a).Contente of the paper, aa presented, have not been rwlewed by the society ot Petroleum ErrOwem Ondare autiwt towxmction Wthe aUtfIONO). Thomat.fid M -td * not~k~ã ny poeitiorrof the Sociaty of PetroteumEngineers, Itaofficers,or members. Pepera praeented at SPE meetingsare subject to publicetkonreview by EditorialCommltteea of the &roiaty of PstroteumEnginaara Permieeionto copy is reefriotedto en abstractornotmc+ethen S00 words.Illuetratbnamay motbe copied The abetrecfehoutdcontaincon@cuw acknowMpmt of where and by whom the paper lapraeented. Writs Publications Manager, SPE, P.O. *X -, RichardeorhTX 7~. Telax, 7S09S9 SPEDAL. ABSTRACTIn very thinly bedded sand.abate sequence.r, uand count8 and imnd/total ratioo can be determined from high resolution elec. trical imagea of the borehole wall. Thi6 technique ia ilhdrated here by a caae study in turbiditea with sand laminae down to I cm in thickneaa. The numerical modeling of the tool response and a comparison m"th jullbore core data help asaess the accuracy of bed thicknesses derived from e!ectricrd images for this type of{ormationa.

TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractWell log, well test, and seismic data provide excellent structural and stratigraphic information on subsurface reservoirs, but may not be able to resolve small-scale vertical and lateral attributes which may control oil or gas production. Outcrops can provide this important information provided they are of sufficient areal extent. In this paper, we demonstrate the application of outcrop and behind-outcrop characterization for improved understanding of thin-bedded turbidite reservoirs in the Gulf of Mexico and elsewhere.A 200m high by 10km long coastal cliff section of the Late Miocene Mt. Messenger Formation, New Zealand consists of 200+ meters of thick-bedded turbidite fan sands and associated thin-bedded fan-fringe sandstone/siltstone, overlain by 300m of thin-bedded slope fan, levee/overbank sandstone/siltstone. This section was characterized at the 'seismic' to individual bed scales. Also, 47 and 105m deep holes were drilled behind the cliff face, cored, and logged through the slope fan facies with Fullbore Formation Micro Imager* and Platform Express* logs. A slope-fan model is presented which differentiates proximal levee facies composed mainly of discontinuous, erosionally-truncated Bouma Tb-c beds from * TM Schlumberger Wireline and Testing Co. Why Outcrop Characterization for Reservoir Studies??Discipline-integration within the petroleum industry during the past 10 years has changed the way in which geoscientists interact with reservoir engineers. Geoscientists have been forced from providing reservoir engineers with conceptual SPE 49563

TX 75083-3836, U.S.A., fax 01-972-952-9435. The proposed technique is illustrated with examples from clastic and carbonate formations. It provides a powerful means to better understand permeability variations in heterogeneous formations.

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