China Oilfield Services Limited — Investor Relations & Filings
About China Oilfield Services Limited
China Oilfield Services Limited provides integrated solutions across the lifecycle of offshore oil and gas exploration, development, and production. The company operates through four core segments: drilling services, well services, marine support, and geophysical and surveying services. Its extensive asset portfolio includes a modern fleet of jack-up and semi-submersible drilling rigs, offshore support vessels, and seismic survey ships. Technical expertise encompasses logging-while-drilling, rotary steerable systems, cementing, and well completion. COSL serves a global client base, operating in diverse offshore regions including the Asia-Pacific, Middle East, and the Americas. The company leverages proprietary research and development to enhance operational efficiency and safety in challenging marine environments. Its integrated service model provides a competitive advantage by offering comprehensive, end-to-end technical support for offshore energy projects.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| 中海油服H股公告-2025年度报告 | 2026-04-14 | Chinese | |
| 中海油服2025年度独立董事述职报告（赵丽娟） | 2026-03-24 | Chinese | |
| 中海油服对会计师事务所2025年度履职情况评估的报告 | 2026-03-24 | Chinese | |
| 中海油服2025年度独立董事述职报告（郭琳广） | 2026-03-24 | Chinese | |
| 中海油服2025年度利润分配方案公告 | 2026-03-24 | Chinese | |
| 中海油服：2025年度内部控制审计报告 | 2026-03-24 | Chinese |
| ID | Filing | Released | Lang | Actions | |
|---|---|---|---|---|---|
|
2026
15 filings
| |||||
| 34869322 | 中海油服H股公告-2025年度报告 | 2026-04-14 | Chinese | ||
| 36128393 | 中海油服2025年度独立董事述职报告（赵丽娟） | 2026-03-24 | Chinese | ||
| 35004406 | 中海油服对会计师事务所2025年度履职情况评估的报告 | 2026-03-24 | Chinese | ||
| 35004405 | 中海油服2025年度独立董事述职报告（郭琳广） | 2026-03-24 | Chinese | ||
| 35004396 | 中海油服2025年度利润分配方案公告 | 2026-03-24 | Chinese | ||
| 35004393 | 中海油服：2025年度内部控制审计报告 | 2026-03-24 | Chinese | ||
| 35004330 | 中海油服关于为全资子公司提供担保额度预计的公告 | 2026-03-24 | Chinese | ||
| 35004326 | 中海油服2025年度独立董事述职报告（姚昕） | 2026-03-24 | Chinese | ||
| 35004323 | 中海油服：2025年度财务报表及审计报告 | 2026-03-24 | Chinese | ||
| 35004206 | 中海油服关于中海石油财务有限责任公司的风险持续评估报告 | 2026-03-24 | Chinese | ||
| 35004203 | 中海油服2025年度环境、社会及管治（ESG)报告 | 2026-03-24 | Chinese | ||
| 35004092 | 中海油服2025年年度报告摘要 | 2026-03-24 | Chinese | ||
| 35004090 | 中海油服董事会关于独立董事独立性自查情况的专项报告 | 2026-03-24 | Chinese | ||
| 35004086 | 中海油服：2025年度涉及财务公司关联交易的专项说明 | 2026-03-24 | Chinese | ||
| 35004084 | 中海油服关于为全资子公司提供担保的公告 | 2026-03-23 | Chinese | ||
Market data
Market data not available
Price history
Peer group · Support activities for petroleum and natural gas extraction
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|---|---|---|---|
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AAKASH | IN | Mining and quarrying |
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ACT Energy Technologies Ltd.
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ACX | CA | Mining and quarrying |
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Ades Holding Co.
Provides offshore and onshore drilling and production servi…
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2382 | SA | Mining and quarrying |
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AJ LUCAS GROUP LIMITED
Provides integrated drilling solutions for energy, mining, …
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AJL | AU | Mining and quarrying |
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Akita Drilling Ltd.
Land-based contract drilling services for the oil and gas i…
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AKT.A | CA | Mining and quarrying |
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Alpine Oil Services Corporation
Provides innovative drilling solutions, primarily MPD and U…
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— | CA | Mining and quarrying |
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Anton Oilfield Services Group
Integrated oilfield technology service provider for full li…
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3337 | KY | Mining and quarrying |
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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/57294/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=57294 | 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=57294 | 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=57294 \ -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": 57294}, 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: 57294)"
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