Sinopec Oilfield Service 

Sinopec Oilfield Service Corporation offers comprehensive engineering and technological solutions tailored for the petroleum industry. The company organizes its operations across six primary divisions: Geophysics, Drilling Engineering, Logging and Mud Logging, Special Down-Hole Operations, Engineering Construction, and an "Others" category. The Geophysics division delivers technical and development services for both terrestrial and marine geophysical exploration. Its Drilling Engineering unit focuses on designing, constructing, and providing technical support for land and marine drilling operations, along with supplying essential drilling instrumentation. The Logging and Mud Logging segment offers specialized technical and contracting services for both onshore and offshore projects, encompassing the acquisition, monitoring, transmission, processing, and interpretation of wellbore data to facilitate comprehensive evaluation of oil and gas, geological, and engineering specifics. Through its Special Down-Hole Operations, the company delivers various technical and construction services, such as well testing, repair, and horizontal drilling, in addition to fracturing, acidizing, and other critical downhole interventions. The Engineering Construction division undertakes a broad spectrum of services. These encompass feasibility studies; design, procurement, and construction (EPC) for diverse projects, including onshore and offshore oil and gas developments, long-distance pipelines, oil and gas processing facilities, storage and transportation systems, petrochemical infrastructure, LNG terminals, and general building construction. Its capabilities further extend to water resources, hydropower, port and waterway development, electricity transmission and distribution networks, and the manufacturing of pressure vessels. Additionally, this segment handles coal chemical engineering, geothermal energy solutions, energy conservation initiatives, and municipal infrastructure projects like roads and bridges. The company adopted its current name, Sinopec Oilfield Service Corporation, in March 2015, having previously been known as Sinopec Yizheng Chemical Fibre Company Limited. Its headquarters are situated in Beijing, People's Republic of China, and it operates as a subsidiary of the China Petrochemical Corporation.