Skip to main content

Science – Society – Technology

Geothermal Energy Cover Image

Table 1 Wells drilled in the Fang geothermal area

From: Geologic framework of the Fang Hot Springs area with emphasis on structure, hydrology, and geothermal development, Chiang Mai Province, northern Thailand

Well name Depth (m) Tflow Tmax Flow (l s−1) Open hole depth (m) Open hole diameter (cm) Surface csg. diam. (cm)/depth (m) Type csg. OD/ID (cm) Lower csg. Diam. (cm)/depth (m) Type csg. OD/ID (cm) Well head press. (bars) Source Remarks WGS84 easting WGS84 northing Date drilled
FTGE-1 29 (br), 30 (c)   100 (c), 110 (br)   30        c, wt, br 110° at 25 m, intermittant shooting flow 30-m high, well collapsed (br) 16.325* 7.813* 5/1982
FTGE-2 80   37     20.32/13.75      c, wt, br   16.425* 7.500* 6/1982
FTGE-3 94 98 111.8 1.0–2.0 80 17.145 20.32/14 21.91/20.247     c, wt, br 111.8° at bottom, flow includes small amount of steam (br) 16.309 7.754 8/1982
FTGE-4             c, wt, br Eruption of water occurred before casing set, well collapsed (br) 16.235* 7.645* 1982 (?)
FTGE-5 19.6 105 115 2.0–4.0 13.1 17.145 20.32/6.5 21.91/20.247     c, wt, br Max temp after closing well 20 min (br), presently marked by 1.5 m brick outline (ki) 16.236 7.654 Before 1986
FTGE-6 85.4   122.3 (c),
93.7 (wt)
None 56 14.287 20.32/6.75 21.91/21.156 15.24/29.4 16.61/15.64   c, wt “Dry hole”(wt). Not located in 2015. Temperature log (Fig. 8) 16.340* 7.835* Before 1986
FTGE-7 52.7 105 130.2 (br)
118 (wt)
3.80 35 14.287 20.32/7 21.91/21.156 15.24/17.7 16.61/15.64   c, wt Not used for power. Shut in for 30 min. intervals, and then geysers 35 m high (ki) 16.061 7.643 Before 1986
FTGE-8 120 105 130 (c)
122 (wt)
0.20 96 14.287 20.32/7.2 21.91/21.156 15.24/24 16.61/15.64   c, wt Temperature log (Fig. 8) 16.142* 7.515* Before 1986
FTGE-9 64 105 128.5 (c)
123 (wt)
0.60 34 14.287 20.32/11.5 21.91/21.156 15.24/30 16.83/15.48   c, wt   16.073 7.625 Before 1986
FTGE-10 103.3   118.4 (c) 115 (wt) None 79.3 14.287 20.32/2 21.91/21.156 15.24/24 16.83/15.49   c, wt location uncertain, said to be up on hill north of large tree above FTGE-15 (ki). Temperature log (Fig. 8)    Before 1986
FTGE-11 58.8 105 125 (c)
118 (wt)
0.50 40.8 14.287 20.32/7 21.91/21.157 15.24/18 16.83/15.50   c, wt Intermediate flow 16.286 7.704 Before 1986
FTGE-12 43.7 105 128.1 (c)
115 (wt)
4.01 37.7 14.287 20.32/6.5 21.91/21.158 15.24/6 16.83/15.51   c, wt Steady flow 16.218 7.624 Before 1986
FTGE-13 90 105 115.8 1.00 72 14.287 20.32/6 21.91/21.159 15.24/18 16.83/15.52   c, Intermediate flow 16.253 7.667 Before 1986
FTGE-14* 73.2 (c)
92 (ki)
110 131.6 7.94 64.2 14.287 20.32/6 21.91/21.160 15.24/9 16.83/15.53 1.5 c, Steady flow (c), said to be 92 m deep with hot water inflow at 18 m/38 m/66 m (ki). Also called the “Khun Theptorn well” 16.081 7.595 1985–86
FTGE-15* 60.5 (c),
160 (ki)
121 130.6 13.97 52.5 14.287 20.32/6 21.91/21.161 15.24/8 16.83/15.54 1.5 c, Said to be 160 m deep with hot water inflow at 60 m (ki). Also named “Khun Wichian well” 16.058 7.678 1985–86
FTGE-16 ~100 (ki)             No information 16.205 7.910 1986
FX-1 500   108 None         tk Location unknown    1995 (?)
FX-2 500 125          1.5 tk Fracture zone at 270 produces 6.94 l/s of 125 °C 16.177 7.404 1995 (?)
FX-3 500   113 None         tk Location unknown    1995 (?)
FX-4 500   130          tk Fracture zones at 268, 337, and 417 m. (tk) indicates a total flow of 10 l/s, but inclear if this is a total of FTX-2 and FTX-4 16.251 7.658 1995 (?)
BH-3 18 100 110 1.00 14 7.302 7.62/4 10.16/9.012     c, wt, br Steady flow (wt) 16.213* 7.798* 6/1984
BH-4 34.7 100 124 0.50 27.7 7.302 10.16/7 11.43/10.22    0.85 c, wt, br Steady flow (wt) 16.038* 7.765* 6/1984
BH-8 25 104 110 1.50 12.2 7.302 8.89/12.8 10.16/9.012     c, wt, br Steady flow (wt) 16.285* 7.846* 6/1984
BH-11     1.00         wt Steady flow (wt), location unknown    6/1984
2 wells             ki 2 wells, 5 m apart near sign (Ing-Doi camp) 16.130 7.956 ?
Bo Luang Camp             ki This might be BH-3 or BH-8 16.213 7.798 ?
  1. (br) Ratanasthien et al. (1985), (c) Chuaviroj (1987). (wt)Wanakasem and Takabut (1986). (tk) Korjedee (2000). (ki) Khun Inton, EGAT staff at Fang, personal communication, 2015
  2. note that Chuaviroj (1987) reports higher maximum temperature than does Wanakasem and Takabut (1986)
  3. * Asterisk on UTM location indicates it has been scaled from scans of maps by Coothungkul and Chinapongsanond (1985) and Wanakasem and Takabut (1986)