China Oilfield Services Limited — Investor Relations & Filings
China Oilfield Services Limited (COSL) is a large-scale integrated oilfield service provider and the core services arm of the CNOOC Group. COSL offers comprehensive solutions spanning all phases of oil and gas exploration, development, and production, primarily focusing on the Asian offshore market. Its operations are divided into four major segments: geophysical services, drilling services, well services (including oilfield technology development and well testing), and marine support services. COSL utilizes a diverse fleet of assets, including jack-up, semi-submersible, and land drilling rigs, to deliver specialized technical solutions.
Recent filings
Market data
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Price history
Peer group · Support activities for petroleum and natural gas extraction
| Company | Ticker | Country | Sector |
|---|---|---|---|
|
Aakash Exploration Services Limited
Provides upstream oil and gas services, mobile workover rig…
|
AAKASH | IN | Mining and quarrying |
|
ACT Energy Technologies Ltd.
Provides directional drilling services and specialized down…
|
ACX | CA | Mining and quarrying |
|
Ades Holding Co.
Provides offshore and onshore drilling and production servi…
|
2382 | SA | Mining and quarrying |
|
AJ LUCAS GROUP LIMITED
Provides integrated drilling solutions for energy, mining, …
|
AJL | AU | Mining and quarrying |
|
Akita Drilling Ltd.
Land-based contract drilling services for the oil and gas i…
|
AKT.A | CA | Mining and quarrying |
|
Alpine Oil Services Corporation
Provides innovative drilling solutions, primarily MPD and U…
|
— | CA | Mining and quarrying |
|
Anton Oilfield Services Group
Integrated oilfield technology service provider for full li…
|
3337 | KY | Mining and quarrying |
|
Arabian Drilling Co.
Provides onshore and offshore drilling, well construction, …
|
2381 | SA | Mining and quarrying |
|
Archer
A global energy services company providing drilling and wel…
|
ARCH | BM | Mining and quarrying |
|
ASHTEAD TECHNOLOGY HOLDINGS PLC
Provides subsea equipment rental and solutions for the glob…
|
AT | GB | Mining and quarrying |
China Oilfield Services Limited via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/50789/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=50789 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=50789 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
cURL
$ curl https://api.financialreports.eu/api/filings/?company=50789 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 50789}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for China Oilfield Services Limited (id: 50789)"
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