LAND OF OPPORTUNITIES. By Dudley W. Bolyard

Transcription

1 LAND OF OPPORTUNITIES By Dudley W. Bolyard

2 OIL & GAS FIELDS Buffalo W. Short Pine Hills & Cady Cr. Lantry

3 FLAMING FOUNTAIN Dakota water well State capitol grounds (Pierre)

4 DAKOTA GAS SHOWS in WATER WELLS LEMMON SYNCLINE PIERRE GAS FIELD S.Dak. Geol. Survey R.I. 39 (1941)

5 SHELL # 2 HERMAN 3 1N 29E, Jones Co. Drilled 1954 DAKOTA SANDS (310 ft) SKULL CREEK SHALE Basal sand (45 ft) has anomalous high resistivity and is probably gasbearing FALL RIVER FORMATION

6 LOWER PENNSYLVANIAN Phillips #1 Ferguson A NE SE 34 7N -13E Meade Co. (1957) core : 11 ft sand, good por, bleeding 21 0 oil, 50% water sat., 7% oil sat. MISS. DST : 540 ft. water FP 288; SIP 1705 (30 min.)

7 GOTTA GET HOME FOR CHRISTMAS Plugged & Abandoned December 22, 1957

8 LANDSAT LINEAMENTS (Chleborad, 1986, USGS O-F )

9 Structure- Base of Pennsylvanian with Subcrops DEVONIAN. to CAMBRIAN M Precambrian MISSISSIPPIAN

10 EAST LIMIT of PALEOZOIC STRATA PIERRE

11 PROSPECTIVE AREA N. DAKOTA MT S O U T H D A K O T A WYO NEBRASKA

12 AVAILABLE AREA

13 THE WELL THAT NEVER WAS DRILLED

14 IF no well had ever been drilled, How would you start to explore?

15 GEOMORPHIC DEVELOPMENT

16 LATE CRETACEOUS SEAWAY 85 MYA from Ron Blakey, NAU Geology

17 FOX HILLS PALEOGEOGRAPHY Site, future Black Hills S. DAK.

18 EOCENE FOLDING (after Bretz, et al, 1981) BLACK HILLS Deadwood FAIRBURN ANTICLINE Inyan Kara White River (Oligocene) Precambrian Greenhorn

19 OLIGOCENE DRAINAGE MT N.D. Site, future Site, future Black Black Hills Hills P S.D. WY

20 CHEYENNE RIVER ANOMALIES (Geologic Map of South Dakota - Darton, 1951) miles

21 SHALY SANDS

22 SHALY SAND LOGS LOW CONTRAST GR & SP NOT diagnostic of lithology Caliper better than SP LOW RESISTIVITY Resembles shale No Neutron-Density CROSSOVER BOWDOIN OVERLAY method

23 GAMMA RAY MODEL SHALINESS INCREASES GAMMA RAY SHALY SAND GAMMA RAY IS 44% SHALE

24 Laminated Sand-Shale Resistivity Model Rh = 1.8 Ohm-m Rsand = 10 Ohm-m Rshale = 1 Ohm-m 1 Resistivity (Ohm-m) 10 After: Matt Bratovitch & Baker Atlas

25 FIDELITY FEE # 2190 NWNW-3-5N-60E CEDAR CREEK FIELD MT.

26 HARDING & BUTTE COUNTIES W. SHORT PINE HILLS JUMPOFF Example CADY CREEK

27 W. SHORT PINE HILLS FIELD Harding Co., So. Dakota IPF 782 MCFGPD Cum..856 BCF No single curve is diagnostic. Pay zone is defined by using all curves, including porosity (see next slide)

28 W. SHORT PINE HILLS (cont.) NEUTRON (left) and DENSITY (right) Porosity curves approach, but do not cross over. They help to define the shaly sand reservoir.

29 NIOBRARA CHALK

30 EXETER #13-10 State Haakon County Niobrara Carlile 300 unit kick Greenhorn 1970

31 The ENGINEERING DISCONNECT (Why some dry holes are not really dry)

32 ADOBE # 13-1 State Haakon County Core Core GAS to surface while coring. Perf Acidize w/ 500 gal. Frac: 13,776 Bbl. OIL, 7,125 # sand. Swabbed water. Carlile 1219 Core

33

34 LANDSAT DOME

35 Black & white LANDSAT

36 Earth Satellite View

37 LANDSAT DOME (from EarthSat mosaic of USA) Concentric curvilinears PIERRE CURVILINEAR

38 STRUCTURAL FANTASY ( lineaments treated as faults) Medicine Butte Petsch,

39 ENTER: the BIPOLAR INVESTOR 1984

40 CRETACEOUS SAND PINCHOUTS

41 SHELL # 1 FLIER 5 3S 11E, Custer Co. SKULL CREEK SHALE FALL RIVER channel sand. Oil stain at top. FALL RIVER FM. LAKOTA FM. Analogous to producing fields in Powder River Basin, Wyoming.

42 SHELL # 1 FLIER 5 3S 11E, Custer Co. SKULL CREEK SHALE MOWRY SANDS NEWCASTLE SAND These sands absent in nearby Black Hills outcrops (updip)

43 THERMAL MATURITY of SOURCE BEDS

44 BIOGENIC GAS

45 CREIGHTON

46 ISOPACH Minnelusa to Winnipeg CREIGHTON LINEAMENTS With PALEOZOIC MOVEMENT

47 CREIGHTON (Geol. Map S. Dakota, Darton, 1951) Fox Hills Ss. Pierre Sh. Pierre Sh.

48 HYPOTHETICAL CROSS SECTION BEFORE EROSION Creighton Anticline AFTER EROSION

49 Magnetometer Survey (Petsch, 1957) 217 Gammna Anomaly Creighton

50 PHOTOGEOLOGY MAP

51 The ORDOVICIAN PETROLEUM SYSTEM

52 CONCEPT WINNIPEG SHALE HC SOURCE ROCK UPWARD MIGRATION INTO RED RIVER DOWNWARD MIGRATION INTO WINNIPEG - DEADWOOD SHEET SAND LONG-DISTANCE LATERAL MIGRATION THROUGH SHEET SAND

53 ISOPACH Minnelusa to Winnipeg CREIGHTON LINEAMENTS With PALEOZOIC MOVEMENT

54 BUFFALO Red River LANTRY Red River MAP AREA May, 1981

55 ZERO ISOPACH WINNIPEG SS. AKASKA PROSPECT WHITE RIVER PROSPECT STRUCTURE Top PRECAMBRIAN 1974

56 WHITE RIVER PROSPECT Precambrian Structure 8 miles scale GULF # 1 Olson 1974

57 GULF No. 1 OLSON ORDOVICIAN RED RIVER FM. WINNIPEG SH. WINNIPEG SS. DEADWOOD SS. PRECAMBRIAN Oil Stain P&A Aug., 1964 Leased 2,000,000 acres. Redrilled Sept., 1965 DST : 3105 water. Perfd. 3146, 3147, 3153, Recovered water w/ oil rainbows.

58 AKASKA PROSPECT Walworth County PRECAMBRIAN STRUCTURE LIMIT of WINNIPEG SS. Possible FAULT AKASKA PROSPECT 1974

59 MAGNETOMETER MAP (after Petsch, 1957, SDGS MRI 4) BASEMENT FAULT PEPPERS PRAY CROSS SECTION HUNT- LAKOTA

60

61 6 miles LIMIT WINNIPEG SS. Possible CLOSURE FAULT

62 CONCLUSIONS HC shows indicate good discovery potential. Complex faults and anticlines are present in Paleozoic strata. Drainage anomalies, heretofore ignored, need seismic evaluation. Cretaceous shaly sands and Niobrara chalk are prime targets for biogenic gas. Pennsylvanian sands, productive in Fall River Co., should produce oil farther northeast.

63 CONCLUSIONS (cont.) The Ordovician petroleum system, which produces oil in Harding County, probably will also yield major oil fields from the Winnipeg (&Deadwood) sands. Some dry holes may be by-passed producers or near misses. Seismic techniques, which are greatly improved, should be used to define structures.