OR/17/037 Appendix 4 - Temperature gradient

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Hannis, S, and Gent, C. 2017. Petrophysical interpretation of selected wells near Liverpool for the UK Geoenergy Observatories project. British Geological Survey Internal Report, OR/17/037.

A temperature gradient of 28°C/km was used (with a ground level temperature of 10°C) was used in the software processing. This is equivalent to the red dotted line shown in Figure 13, sourced from Busby et al., 2011[1].

Figure 13    Temperature data for the wells in this study plotted with regional data. Pale blue arrows represent the correction of the maximum wireline recorded temperatures for the time since drilling mud circulation ceased. Data point and trend codes are listed in Table 15.
Table 15    Sources of temperature data in Figure 13
Well Depth, m Temp, °C Comments/source
InceMarshes1 1453 43.33 FMI run
InceMarshes1 1453 43.33 Comp log header, Pex run, individual field prints used to find time since circ Maximum recorded temp
InceMarshes1 1453 42.22 p20 of geological End of Well Report (EOWR) Maximum recorded temp
InceMarshes1 1175.9 47.5 p9 of geological EOWR flow line
Kemira1 1230.78 23.89 Log header, Density_neutron_run_2.pdf No temp data in run 3 logs to 4708 ft. TVD max 6 deg at 4037 ft, no survey data reported. Assumed ‘vertical’
Kemira1 559.61 17.78 Log header, Density_neutron_run_1.pdf
Ince_cor 1453 65.51 Time since circ: 5.45 hrs. 3.30 11th dec to 9.16 11th dec Simple method: https://www.zetaware.com/utilities/bht/timesince.html
Ince_cor 1453 53.86 Time since circ: 27.5 hrs. 3.30 11dec to 7.00 12dec
Kem_cor 1230.78 45.1 Time since circ: 6 hrs 47 mins. 16.00 13 feb to 22:47 13 feb
Kem_cor 559.61 39.4 Time since circ: 6 hrs 13 mins. 19:30 28 jan to 1:43 on 29th Jan
BusbyMaps 100 13 12–14 contour, Busby et al., 2011[1]
BusbyMaps 200 17 16–18 contour, Busby et al., 2011[1]
BusbyMaps 500 18.5 17–20 contour, Busby et al., 2011[1]
BusbyMaps 1000 40 38–42 contour, Busby et al., 2011[1]
BusbyGrad 0 10 Reported gradient for UK (abstract, Busby et al., 2011[1])
BusbyGrad 1000 38 Reported gradient for UK (abstract, Busby et al., 2011[1])

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 BUSBY, J, KINGDON, A, and WILLIAMS, J. 2011. The measured shallow temperature field in Britain. Quarterly Journal of Engineering Geology and Hydrogeology, Vol.44, 373–387.