Chengmai deep-sea oil and gas services · Manufacturing and services
CNOOC Energy Technology Chengmai Co., Ltd.
CNOOC Energy Technology Chengmai operates a subsea-production-system test centre for integration, function and interface work on equipment such as trees. Its duty is to expose control, pressure and mechanical-connection problems ashore before sail, not replace the offshore installation team.
Published company identity
CNOOC Energy Technology Chengmai Co., Ltd.
Chengmai County · Central state-owned group
Published products and capabilities
- Subsea-production-system integration testing and offshore-equipment technical services
Regional influence evidence
- Science-ministry material explicitly names the entity and subsea-system test centre, directly supporting its integration and pressure-test function in Chengmai.
- The county report advances deep-water tree R&D, testing and assembly, connecting its test role with Chengmai infrastructure.
Checkable sources
- Chengmai County 2025 government work report — Hainan Provincial People’s Government
- Hainan deep-sea and deep-layer energy engineering laboratory inaugurated in Chengmai — Ministry of Science and Technology
- Hainan turns to the sea: Chengmai oil and gas service base — Hainan Department of Agriculture and Rural Affairs
Information and transaction boundary
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