GNS Science Consultancy Report 2006/0XX

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Table 1. Number of wells within a range of calculated bottomhole temperatures and corresponding depth ranges, in North island and South Island onshore basins and nonbasins. BHT= bottomhole temperature. Region Number of wells BHT( o C) range Depth range (m) 120 o C North Island Northland 10 17-127 44-3357 5 3 1 - - 1 Taranaki 140 17-172 48-5064 22 23 27 36 16 16 Wanganui 15 22 – 90 295-3495 3 7 4 1 - - East Coast 62 16-150 55-4351 21 20 16 3 1 1 Other areas 27 16 – 66 45-1684 17 9 1 - - - South Island West Coast 70 16-134 122-3749 43 9 13 2 1 2 Canterbury 8 29 - 70 661-1696 1 4 3 - - - Southland 8 17-106 61-3131 4 - 3 - 1 - Other areas 9 17 - 81 73-2135 7 1 - 1 - - Total 349 123 76 68 43 19 20 GNS Science Report 2007/23 12
Table 2. Potential energy in kW from oil and gas wells assuming flow of 4L s -1 . The conversion factor (CF) used for calculating kWt (kilowatt-thermal) is 0.7 for wells with bottomhole temperatures
Page 2 and 3: Abandoned oil and gas wells - a rec
Page 4 and 5: CONTENTS ABSTRACT..................
Page 6 and 7: ABSTRACT There are 349 abandoned on
Page 8 and 9: Figure 1. Temperature, depth and pe
Page 10 and 11: 2.0 ABANDONED OIL AND GAS WELLS IN
Page 12 and 13: Figure 5. Map showing the distribut
Page 14 and 15: Figure 6. Drilled vertical depths o
Page 16 and 17: Figure 8. Temperatures ranges of on
Page 20 and 21: 3.3 REASONS FOR ABANDONING WELLS Mo
Page 22 and 23: Assuming a flow of 4 L s -1 , the 2
Page 24 and 25: 5.0 CURRENT GEOTHERMAL USE OF ABAND
Page 26 and 27: In New Zealand temperature may be p
Page 28 and 29: Figure 16. Abandoned hydrocarbon we
Page 30 and 31: 10. Determine how geothermal produc
Page 32 and 33: Isaac M J, Herzer R H, Brook F J an
Page 34 and 35: APPENDIX 1 NOTES ON THE GEOTHERMAL
Page 36 and 37: Speaker Company/Agency Topic Main P
Page 38 and 39: Table 6. Basic well data for onshor
Page 40 and 41: Well Name NORTH ISLAND TARANAKI Dat
Page 42 and 43: Well Name SOUTH ISLAND WEST COAST D

GNS Science Consultancy Report 2006/0XX

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