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Table 4 Input data and ranges for facies simulation

From: From pilot knowledge via integrated reservoir characterization to utilization perspectives of deep geothermal reservoirs: the 3D model of Groß Schönebeck (North German Basin)

Unit

Stratigraphy

Modelled reference facies

Depth range (m) (E GrSk 3/90)

Background facies

N/G ratioa (dec)

Main lithology

Channel geometry: ranges, mean value in brackets

Orientationb (°)

Amplitude (km)

Wavelength (km)

Width (km)

Thicknessb (m)

7

Upper Hannover Fm. (Mellin)

(Sandy mudflat)

3875–3901

Mudflat playa

0.02

Mudstone

Like sandy mudflat in unit 5

6

Hannover Fm. (Mellin-Peckensen)

Sandy mudflat

3901–3941

Mudflat playa

0.1

Mudstone, siltstone, and some sandstone

Like sandy mudflat in unit 5

5

Dethlingen to Hannover Fm. (Peckensen-Eldena)

Sandy mudflat

3941–4084

Mudflat

0.4

Siltstone, fine-grained sandstone

275–360 (300)

0.8–2.5 (1.5)

1.0–5.0 (2.5)

0.005–0.4 (0.06)

0.2–8.0 (2.0)

4

Dethlingen Fm. (Eldena)

Epheremal stream floodplain

4084–4134

Sandy mudflat

0.85

Siltstone, fine-grained sandstone

200–360 (290)

0.6–2.5 (1.7)

2.0–8.0 (4.0)

0.7–3.3 (2.1)

4.0–8.0 (6.0)

3

Dethlingen Fm. (Rambow, ERS)

Epheremal stream floodplain

4134–4185

Sandy mudflat

0.99

Fine- to coarse-grained siltstone

225–340 (290)

2

Mirow Fm. (Havel subgroup)

Braided river

4185–4222

Sandy mudflat

0.8

Coarse-grained sandstone and conglomerate

290 ( -70)–90 (345)

0.6–2.5 (1.7)

2.0–8.0 (4.0)

2.5–4.5 (3.5)

8.0–12.0 (9.0)

1

Permo-Carboniferous

Tuffite, massive andesite

4222–4292

None

0.85

Amygdaloidal andesitic rocks

290 ( -70)–45 (355)

Several km

0.3–7.0 (2)

  1. The N/G ratio refers to the global net-to-gross ratio of sandy (porous) to non-porous rocks, in italic: corresponding parameters chosen after Gibling (2006)
  2. aBased on the GR log of the E GrSk 3/90 borehole
  3. bEstimated using the image log of E GrSk 3/90)