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GEOLOGICAL  SURVEY  OF  ALABAMA  

RECS  2015  Tuscaloosa,  AL  

CORE  AND  WELL  LOG  WORKSHOP  

Geological  Survey  of  Alabama  ü  Energy  Research  ü  Geologic  Research  ü  Water  Research  ü  Biological  Research  

State  Oil  and  Gas  Board  ü  RegulaNon  ü  PermiOng  ü  Enforcement  ü  Class  II  Underground  InjecNon  Control  

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Data  and  Sample  CollecNons  ü  Basic  well  records  (17,168  permi9ed  wells)  ü  CompleNon  data  ü  ProducNon  data  ü  Geophysical  well  logs  and  core  analyses  ü  Core  and  CuOngs  (>  10,000  wells)  ü  AnalyNcal  faciliNes  

HOW  MUCH  IS  A  TON  OF  

CO2?  

USA  emits  7  billion  tons/year.  

 20  of  these  are  

yours!  

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CO2  PVT  RELATIONSHIPS  

ALABAMA  GEOLOGY  in  a  POSTCARD  

Black  Warrior  basin  

Appalachian  Mountains  

Gulf  of  Mexico  basin  

Nashville  Dome  

Gorgas  

Barry  

ü  Saline  formaNons  ü  Enhanced  oil  recovery  ü  Coal,  shale  sinks  ü  Shale,  evaporite  seals  

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WILLIAM  CRAWFORD  GORGAS  STEAM  PLANT  

WELL  LOGS  GR

SP CNL FDC

Gorgas  #1  borehole  

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GIANT  CORE  FOR  BIOMINERALIZATION  

TESTING    

Bremen  SS  Member,  PoZsville  Fm.  

Smith  Lake  Dam,  AL  

TUSCUMBIA  LIMESTONE,  GORGAS  #1  

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PALEOZOIC  RESERVOIRS  Hartselle  SS  

(fluoroscope)  10  mm  

Knox  dolostone  

SALINE  FORMATIONS  

Eutaw  Fm.,  Gilbertown  Field  

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CITRONELLE  FIELD  OPERATIONS  Well  B-­‐19-­‐10  #2  

Projected  5-­‐spot  performance  SENSOR  simulaNon  

Simulation by E. Carlson, Univ. AL

Time (days)

Oil

Prod

uctio

n (b

bl/d

ay)

SECARB  III  –  “ANTHROPOGENIC”  

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PALUXY  FM.  SP  LOG  CROSS  SECTION  

Wash-­‐Fred  

middle  Paluxy   basal  Paluxy  

Mooringsport  Fm.  

upper  Paluxy  

Folaranmi  (2015)  

PALUXY  FORMATION,  WELL  D-­‐9-­‐8  #2  

Burrowed SS

Cross-bedded SS

Cracked, rooted SS, MS

φ = 20-23%

k = 200-3800 mD

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PALUXY  CORE  LOGS  

POROSITY  AND  PERMEABILITY,  D-­‐9-­‐7  

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ü  Reservoir:  MulHstorey,  bedload-­‐dominated  fluvial  deposits.  

ü  Baffles,  barriers,  and  seals:  Interfluvial  mudstone  with  caliche.  

ü  Sandstone  is  very  fine-­‐  to  coarse-­‐grained  subarkose  and  arkose.  

ü  Diagenesis  driven  mainly  by  pedogenic  processes.  

ü  Grain  dissoluHon,  quartz  overgrowth,  illuvial  clay  coaHng,  carbonate  cement  influence  reservoir  quality.  

ü  Reservoir  porosity  commonly  >20%.  

ü  Permeability  up  to  3.8  Darcies.  

 

ü  Similar  deposits  are  widespread  in  Lower  Cretaceous  of  Gulf  of  Mexico  region.  

GEOLOGICAL  HIGHLIGHTS  

Process  analog:  Ganges  River  

What  we’re  going  to  do…    

ü Visit  core  facility  and  split  into  3  groups  

ü Group  1:  Oil  reservoir  core,  south  AL  ü Group  2:  Coal/fracture  core,  north  AL  ü Group  3:  Saline  formaHon  core,  south  MS  

ü Each  group  reports  findings  to  other  groups