09001

Crude petroleum and natural gas production

This sub-class includes extraction, exploration, dressing and/or beneficiating of crude petroleum and natural gas. Units in this sub-class are primarily engaged in: •extraction and/or exploration of crude petroleum oils, gaseous hydrocarbon (natural gas) and/or condensates •draining and/or separation of liquid hydrocarbon fractions •gas desulphurisation •extraction and/or exploration of bituminous or oil shale and/or tar sand •production of crude petroleum from bituminous shale and/or sand •processes to obtain crude oils such as decantation, desalting, dehydration and/or stabilisation •mining of hydrocarbon liquid, obtained through liquefaction or pyrolysis

SSIC hierarchy ISIC class Crosswalks

Level

final

Mapped ISIC codes

Source

SingStat

In this section: sibling codes

class 0900 Service Activities Incidental to Oil and Gas Extraction (except Surveying and Engineering Design and Consultancy Services Supporting Mining, Oil and Gas Extraction and Offshore Exploration Activities) final 09002 Service activities incidental to oil and gas extraction (except surveying and engineering design and consultancy services supporting mining, oil and gas extraction and offshore exploration activities)

Official data

Official name	Singapore Standard Industrial Classification (SSIC 2025)
Issuing authority	Department of Statistics Singapore (SingStat / DOS)
Tax authority	Inland Revenue Authority of Singapore (IRAS) (IRAS)
Purpose	Mandatory at ACRA business/company registration; used by IRAS, MOM, EDB, SingStat
Active version	SSIC 2025 (15 Apr 2025)
Hierarchy level	Sub-class (5-digit) (final leaf)
Source	https://www.singstat.gov.sg/standards/standards-and-classifications/ssic
Prior versions	SSIC 2020, SSIC 2015

Hierarchy context

B→09→090→0900→09001 Crude petroleum and natural gas production

Parent class

0900 Service Activities Incidental to Oil and Gas Extraction (except Surveying and Engineering Design and Consultancy Services Supporting Mining, Oil and Gas Extraction and Offshore Exploration Activities)

Parent division

09 SERVICE ACTIVITIES INCIDENTAL TO OIL AND GAS EXTRACTION (EXCEPT SURVEYING AND ENGINEERING DESIGN AND CONSULTANCY SERVICES SUPPORTING MINING, OIL AND GAS EXTRACTION AND OFFSHORE EXPLORATION ACTIVITIES)

Parent section

B MINING AND QUARRYING

Correspondence tables

SSIC 2020

09001 — Crude petroleum and natural gas production

ISIC Rev. 5

0610 Extraction of crude petroleum
0620 Extraction of natural gas

ISIC crosswalk

ISIC Rev. 5 class 0610 Extraction of crude petroleum Open ISIC class page with reverse SSIC links. ISIC Rev. 5 class 0620 Extraction of natural gas Open ISIC class page with reverse SSIC links. Full table SSIC 2025 to ISIC Rev. 5 Open the full correspondence table.

Alphabetical index entries

Principal Title 09001 Crude petroleum and natural gas production Alternative Title 09001 Buthane extraction (natural gas) Alternative Title 09001 Crude petroleum mining Alternative Title 09001 Crude petroleum production Alternative Title 09001 Ethane extraction (natural gas) Alternative Title 09001 Methane extraction (natural gas)

Data source: Department of Statistics Singapore (SingStat / DOS) (https://www.singstat.gov.sg/standards/standards-and-classifications/ssic). Official SSIC 2025 classification workbook.

Last data refresh: 15 Apr 2025. Classification version: SSIC 2025.

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