Integrated stratigraphic analysis of turbidite system reservoirs: East Breaks Block 160 field, offshore Texas Pliocene-Pleistocene

Conference · Wed Mar 01 04:00:00 EST 1989 · AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States)

OSTI ID:6376997

Armentrout, J M; Malecek, S J; Braithwaite, P; Beeman, C E

Four Pliocene to Pleistocene reservoirs of the East Breaks Block 160 field are interpreted as deep-water sand deposits of turbidite origin: the oldest (Globoquadrina altispira) is about 50 mi downslope from its age-equivalent shelf; the youngest (Trimosina A) is only 6-10 mi downslope from its shelf. Electric-log correlations and facies analysis for both reservoirs suggest channel-fed deposition of aggradational lobes with basal sheet sands. Biofacies indicate deposition at middle to upper bathyal water depths (> 600 ft). Seismic facies analysis shows the reservoir interval correlates with discontinuous, variable-amplitude, non-parallel reflection character. This sand-prone seismic facies has a lobate map pattern within the isochron thicks of the Block 160 salt-withdrawal basin. A depositional model for this system includes (1) deposition during a sea level lowstand, (2) sediment supplies from a shelf-edge deltaic system, (3) transport by gravity flow process through physiographic lows on the slope, and (4) deposition as intraslope basin fans consisting of sheet, lobe, and channel deposits.

• Research Organization: Mobil Oil Corp., Dallas, TX (USA)
• OSTI ID: 6376997
• Report Number(s): CONF-890404-
• Conference Information: Journal Name: AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States) Journal Volume: 73:3
• Country of Publication: United States
• Language: English

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