Table 1 Microbial Indicators2,15,25,26.

From: An Algorithm of Association Rule Mining for Microbial Energy Prospection

S. No

Name of Indicator

Abbreviation

1.

Number of methane oxidizing bacteria

Nmob

2.

Number of ethane oxidizing bacteria

Neob

3.

Number of propane oxidizing bacteria

Npob

4.

Number of butane oxidizing bacteria

Nbob

5.

Number of sulphate reducing bacteria

Nsrb

6.

Number of denitrifying bacteria

Ndb

7.

Number of interisitial

Ni

8.

Number of hydrocarbons dissolved in fluids

Nhdf

9.

Number of occluded hydrocarbons

Noh

10.

Number of adsorbed hydrocarbons

Nah

11.

Rate of carbon dioxide production

Rcdp

12.

Number of identified microscopic objects

Nimb

13.

Amount of hydrogen sulphide

Ahs

14.

Amount of nitrogen

An

15.

Amount of nitrogen oxide

Ano

16.

Amount of paraffin dirt

Apd

17.

Oxidation reduction potential (Eh)

Orp

18.

PH of the system

Phs

19.

PH/Eh ratio

Pheh

20.

Rate of precipitation of silica

Rps

21.

Amount of iron oxides

Aio

22.

Amount of phosphates

Ap

23.

Amount of carbonates

Ac

24.

Quantity of clays

Qc

25.

Precipitation of pyrite

Ppr

26.

Precipitation of greigite

Pg

27.

Precipitation of pyrrhotite

Ppy

28.

Precipitation of maghemite

Pmg

29.

Quantity of magnetic particles

Qmp