Chapter 2 - 11 METHODS OF EXPLORATION OR HOW DO GEOLOGIST...

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Unformatted text preview: 11 METHODS OF EXPLORATION OR HOW DO GEOLOGIST EXPLORE FOR OIL AND GAS Drilling operations Oil vs gas; 4 inch casing vs. 5 inch; costs Sources of geologic data formation evaluation through sample examination in conjunction with open hole logs of all types and mud logs; data from log headings, sample cut, SW calculations; DST Mapping techniques Correlation of open hole logs in order to gather geologic data Regional and local mapping Use of subsurface mapping data Use of surface mapping data DRILLING OPERATIONS AS PERTAINING TO PROSPECTS 1. Cable versus rotary drilling rigs. 2. 4 inch versus 5 inch casing and why. 3. Oil versus gas drilling. 4. Mud systems for oil versus gas wells. 5. Vertical versus horizontal drilling Large Land Drilling Rig Loving County, Texas 20,00'0' PTD Ellenberger test SOURCES OF GEOLOGIC DATA 1. All methods of formation evaluation. 2. Geologic maps and cross-sections. 3. Heamdon base maps 4. Corporation commission 1002A forms. 5. Completion cards (usually 1002A data). 6. Seismic data if available. 7. Published geologic reports if available in the area of interest. 8. Surface examination of rocks and their depositional environments. 9. Aerial photography. ..acustrins, De$ert~ end Glacial Environments t=~~~-_~~ ~ "'4100 ~-- ' A Structural+Football' (As~impl~ asit 'Gets) 'M "' ,; __~ g- •• 4710 ' ,-"t __ ~L.- -.,.... ':4l'OO 0' .~ , ,.'-'. , ) o v- ,I,.." ConIourii•••••-50ft OaNm!!W"1IW1 r:tg. 21'~r"MllSaurian sandSton. structure "map" Mt:JbtifJtHi,n8kJ. ,FmmDutton,_ 1982. Perm1Sslbn to publish bJtAAPG. R17¥/ 3 5-Q--3107-3100 ~-3120 20C-3116 5.8 BCF-60f~----~~~------~~~-------+--------~r.-r-----7MffiO _ / -+-+- L 3 B C F..+ - _ ..; .........: ..- - - - - - - - - ; 2 .S B C F - - 110 MBO 24 M:BO /0 249MMCF-¢--3151 :". n-3159-o--3145-3164- ~9MBO ,.,J \ -3 1 .6 :f I· ~\,,\~1! . /4 - J \~ lO1Y.J.:BO 1 ~ ~-3167 /5 f 8Jy1MCF-3149 .0- ..-3152 12 300lV-3.-3134 I ~-3180 R17W-¢--3164 3 4 IW-3h4-3101 /-3100-¢--3165 \'-3280-3180 I M- /5 L L - - - - - t- - - - - ~ _ Y ... 20--_-.I- 1 ~~-------t----------__ o ~'-""--l" ,..------,------1 0---4--...- - r - - - - - - 3 0 _ _-+-_-40 30----rg 20 30 20 14 20 ....• 20 32 34 10 ~O _20 20 20 ~ +110 14JS P.\.04cl"~en.., B1t.f,*~ .... \ 1I1'11tO 13323567A • ~ ) .- . ~....•. ""'" .V'-- ~,Y,_.I"t..,,-...,... w • • _ • _._- • _ • . •... _ .... _---_ ..- . , .. ~ 101lMIIIIU" Cromwell S,.IICING" SrllCING NA. OHOE R NIlM ", R CIASS 0 •. G u Ilty Ir" "'"1' C (n\m O"P Disposal rrRrOHlllfO 3620-3670 INII RVIIIS ACUJlVOIIIM[-- f r.,.turr ' ••'CIted") Flu"" Amount'-- •lIC "",00 0"11 N O Converted to S~) 9-27-90 COll~lI11OH OrlLlHOMACO"'QAA O i & c •• Con•••• rOtt onJCe 01111 00.""""". C~r or.l""", i i n••••• 16~ 10 l ,~ OfllGIHAl _~ Not(HOEO R._~ PlEAS( TYrE OR USE IIlACK 1M(ONLY NOlE: A"••. hcO f"c~",_" rOO1AI'KOn','1 i.--' IVr{ ()I ""/lIlNG Ol'I:RIIIIUN _. SI""10HI II0l E _ DIJIF.C'1OtW . HOll " d ••• " t 1.",.,11or horll()f14~1 'oe •••••••...
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This note was uploaded on 02/04/2012 for the course GPHY 3423 taught by Professor Marfurt during the Fall '11 term at The University of Oklahoma.

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Chapter 2 - 11 METHODS OF EXPLORATION OR HOW DO GEOLOGIST...

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