Reservoir characterization of Yates Formation (Permian, Guadalupian), South Ward field, Ward County, Texas /
"upward drying" cycle that starts with a "wettest" facies and
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1997.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | "upward drying" cycle that starts with a "wettest" facies and (6) dolostones with predominantly mudstones and wackestones. (HFSS) separated by a prominent erosional unconformity. The 100-250md) to the lowest (o = < 4% to; k = <Imd). Each of and at field scale. Yates facies include: (1) fine grained anhydrite cemented; (4) silty to very fine grained, gray with Average capillary displacement pressures calculated for the bioturbated and massive sandstone; (3) very fine grained and composite sequence, that was deposited during a sea level composition. Depositional environments of the clastics deposition of Yates Formation. displacive anhydrite nodular cement; (5) siltstone, dark gray elastic facies 1 and 2 are 12psia and 43psia respectively. ends with "driest" facies. The HFSs start with a lower eustatic cycles on the 3 rd eustatic cycle. A constant, low examine the clastic reservoirs at pore scale, facies scale facies vary from shallow marine to continental, eolian and fall of 3 rd order scale. Internal cyclicity in the Yates field in west Texas. The main objective of this thesis is to fluvial. Carbonates are restricted subtidal to supratidal Formation is the result of superimposition of 4 Ih and 5 th Highstand Systems Tract (HST). There is evidence of Incised in the Permian Basin of west Texas. Production is is 148psia, which is classed as "seal facies". Facies 4 laminated sandstone; (2a) very fine grained, gray, lower HFS is made up of 10 parasequences; the upper HFS is made up of 7 parasequences. Each parasequence represents an predominantly from very fine grained sandstones and present work focuses on the Yates reservoirs of South Ward producing clastics have northwest-southeast trend in west ranked by reservoir quality from the highest (o = 20-30%; k = relationship observed through alinear regression model. Sandstones are sub-arkosic and differ in matrix and cement shelf deposits. The facies-dependent reservoir rocks were siltstones that are interbedded with carbonates. The silty, reddish silty sandstone, laminated and typically subsidence rate was assumed for the entire shelf, during the Texas and roughly an east-west trend in New Mexico. The The Yates Formation is a prominent hydrocarbon producing unit These are classed as "good reservoirs"; the same for facies 3 these facies is characterized by a particular 0 vs k through 6 are also fluid barriers. At a field scale, the to black, compact and laminated, with pyrite and salt pits; Trangressive Systems Tract (TST) and end with an upper Valley Fills (IVFS) at the bases of the TSTS. The Yates is a very fine grained, gray, moderately sorted and ripple Yates Formation is divided into two High Frequency Sequences yellowish well sorted sandstones with poor cementation; (2) |
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| Item Description: | "Major subject: Geology". Vita. |
| Physical Description: | xiii, 114 leaves : illustrations, maps ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |