CNPC's core global business is composed of three sectors:

Oil & Gas Operations 

  Upstream: Oil and gas exploration, development and production

  Midstream: Construction of pipeline, storage and transportation facilities, natural gas marketing and LNG projects

  Downstream: Refining and marketing, crude oil and oil products trading and transportation

  Chemicals: Base chemicals, petrochemicals, fertilizer and specialties

Field Services, Engineering & Construction
This sector includes geophysical prospecting, well drilling, well logging, field surface engineering and pipeline construction.

Petroleum Equipment
This sector includes the manufacturing and supply of oil and gas exploration equipment, drilling and production equipment, storage and transportation equipment, refining and chemical equipment, and oilfield chemicals.