No layoffs. Great Wall Drilling Engineering Co., Ltd. of China Petroleum Group was established on July, 2008 18. The company is located in Beijing, and its detailed address is:No. Anli Road 10 1, Chaoyang District, Beijing. According to the national enterprise credit information publicity system, the legal person is Ma Yongfeng with a registered capital of 2.77 billion yuan. The business scope of an enterprise is: contracting foreign engineering projects that are suitable for its strength, scale and performance. The external demand for sending foreign laborers to implement the above-mentioned overseas projects. The exploration and development of oil, natural gas and coalbed methane and the technical services such as reservoir geology, geophysical exploration, drilling, logging, logging, well testing, workover, cementing, completion and downhole operation in the process require a lot of labor.