---
title: "China Oilfield Services Limited (601808.SH) — Company Overview"
type: "Symbol"
locale: "en"
url: "https://longbridge.com/en/quote/601808.SH/overview.md"
symbol: "601808.SH"
name: "China Oilfield Services Limited"
parent: "https://longbridge.com/en/quote/601808.SH.md"
datetime: "2026-04-17T07:22:17.016Z"
locales:
  - [en](https://longbridge.com/en/quote/601808.SH/overview.md)
  - [zh-CN](https://longbridge.com/zh-CN/quote/601808.SH/overview.md)
  - [zh-HK](https://longbridge.com/zh-HK/quote/601808.SH/overview.md)
---

# China Oilfield Services Limited (601808.SH) — Company Overview

## Basic Information

| Item | Detail |
|------|--------|
| Industry | Energy Equipment and Services |
| Exchange | CN Market |
| Address | 1581 Haichuan Road, Tanggu Ocean Science Park, Tianjin Binhai High-tech Zone |
| Website | [www.cosl.com.cn](https://www.cosl.com.cn) |

## Company Profile

China Oilfield Services Limited, together with its subsidiaries, provides integrated oilfield services in China, Indonesia, Mexico, Norway, the Middle East, and internationally. The company operates through four divisions: Geophysical Services, Drilling Services, Well Services, and Marine and Transportation Services. It offers drilling services, including drilling lift boats and accommodation and rigs; well services, such as directional drilling, logging, drilling and completion fluids, cementing, workover, production and optimization, and well completion; and geophysics and geotechnical surveying, as well as marine support vessels comprising anchor handling, towing, cargo (passenger) transportation, stand-by, and oil lifting assisting services. The company was incorporated in 2001 and is based in Sanhe, China.

## Key Executives

| Name | Title |
|------|-------|
| 赵顺强 | 董事长 & 首席执行官 |
| 孙维洲 | 董事会秘书 & 副总裁 & 公司秘书 |
| 周家雄 | 副总裁 |
| 杨德兴 | 副总裁 |
| 吴子现 | 副总裁 & 总法律顾问 |
| 郄佶 | 首席财务官 |
| 尚捷 | 总工程师 |
| 肖佳 | 党委副书记 |

## Major Shareholders

| Name | Ratio | Report Date |
|------|-------|-------------|
| 中国海洋石油集团有限公司 | 50.86% | 2026-03-25 |
| 香港中央结算(代理人)有限公司 | 37.58% | 2026-03-25 |
| 中国证券金融股份有限公司 | 2.89% | 2026-03-25 |
| 香港中央结算有限公司 | 0.39% | 2026-03-25 |
| 中信银行股份有限公司-招商优质成长混合型证券投资基金(LOF) | 0.27% | 2026-03-25 |
| 中国工商银行股份有限公司-华泰柏瑞沪深300交易型开放式指数证券投资基金 | 0.21% | 2026-03-25 |
| 中国银行股份有限公司-招商瑞文混合型证券投资基金 | 0.20% | 2026-03-25 |
| 黄嘉伟 | 0.15% | 2026-03-25 |
| 中国建设银行股份有限公司-易方达沪深300交易型开放式指数发起式证券投资基金 | 0.15% | 2026-03-25 |
| 广东省肆号职业年金计划-招商银行 | 0.12% | 2026-03-25 |

## Business Breakdown

| Segment | Revenue | Ratio |
|---------|---------|-------|
| Well Services | 27536597122 | 53.77% |
| Drilling Services | 15589971838 | 30.44% |
| Marine Support Services | 5386948893 | 10.52% |
| Geophysical Acquisition and Surveying Services | 2701811025 | 5.28% |
| Eliminations | -932851458 | % |

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  "title": "China Oilfield Services Limited Business Breakdown",
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        "segment": "Well Services",
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      {
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        "ratio": 10.52
      },
      {
        "segment": "Geophysical Acquisition and Surveying Services",
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      },
      {
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      }
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    "color": {
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}
```

## Geographic Segments

| Region | Revenue | Ratio |
|--------|---------|-------|
| China | 38778156244 | 77.12% |
| International | 11504321176 | 22.88% |


---

> **Disclaimer: This article is for reference only and does not constitute any investment advice.**