|                              List of completed projects in recent years 
| Number | Project Name | Project Cost | Quality and Grade | Project Leader | Remarks |  
| 1 | Gas cleaning changed from oil for Pu-Lin oil pipeline  | 8 millons | Excellent | Xu Xiaohua | 2007.10 |  
| 2 | High-pressure water cleaning for Pu3 polluted ramp entrance and exit pipelines of Oil Extraction Factory 2  | 0.5 millon | Excellent | Yang Xingxing | 2009.08 |  
| 3 | High-pressure water cleaning for Pu 3 polluted entrance pipelines of Oil Extraction Factory 2 | 0.7 millon | Excellent | Yang Xingxing | 2008.03 |  
| 4 | Ming 2 injection pipeline cleaning of Oil Extraction Factory 3 | 1.5 millon | Excellent | Yang Xingxing | 2008.09 |  
| 5 | Cleaning for inner-pipe network and filter tank at the Wen 3 polluted station of Oil Extraction Factory 1 | 1.608 millon | Good | Yang Xingxing | 2009.02 |  
| 6 | Dephlegmator system cleaning in the seconde gas factory T107/T108 of Natural Gas Production and Sale General Factory | 1.16 millon | Excellent | Zong Huibin | 2009.07 |  
| 7 | Cleaning for inner-pipe network and filter tank at the Wen 3 polluted station of Oil Extraction Factory 1 | 1.53 millon | Excellent | Zhang Zizhen | 2009.11 |  
| 8 | High-pressure water cleaning for Pu3 polluted ramp entrance and exit pipelines of Oil Extraction Factory 2 | 0.6 millon | Excellent | Yang Xingxing | 2010.01 |  
| 9 | Fire control water-pipeline repairing in the third treatment factory of natural gas treatment factory | 1.58 millon | Excellent | Shi Yanming | 2009.12 |  
| 10 | Fire control water-pipeline repairing in the third treatment factory of natural gas treatment factory | 3.91 millon | Excellent | Xu Xiaohua | 2007.09 |  
| 11 | East 7 injection pipeline network cleaning of Oil Extraction Factory 2 | 4.5 millon | Excellent | Jiang Pengwen | 2006.04 |  
| 12 | High pressure water cleaning for filter tank and sedimentation tank in Machanglian of Oil Extraction Factory 6 | 0.68 millon | Excellent | Zhang Jianbin | 2007.04 |  
| 13 | Injection pipeline network cleaning of Oil Extraction Factory 4 | 8.05 millon | Excellent | Li Xiaohui | 2007.12 |  
| 14 | Injection pipeline cleaning of Oil Extraction Factory 1 | 3.55 millon | Excellent | Zong Huibin | 2009.11 |  
| 15 | Qiaokou south injection pipeline cleaning of Oil Extraction Factory 6 | 3.33 millon | Excellent | Yang Xingxing | 2009.8 |  
| 16 | Wei 3 injection pipeline physical cleaning of Oil Extraction Factory 3 | 2.77 millon | Excellent | Li Xiuqi | 2009.12 |  
| 17 | Wei East injection pipeline physical cleaning of Oil Extraction Factory 3 | 2.22 millon | Excellent | Yang Xingxing | 2009.12 |  |