Review on the Development of Multi-lateral Well Technology

Multi-lateral well technology is a new drilling technology developed after directional well, lateral drilling and horizontal well technology. As the extension and development of horizontal well technology, multi-lateral well technology has obvious technical and economic advantages in reducing drilling cost and improving recovery efficiency of new and old oil fields. Multi-branch well technology takes drilling and completion technology as the main difficulty to tackle. Multi-branch well technology is a new drilling and completion technology to increase the production of oil and gas well by increasing the drainage area of oil and gas reservoir. It is one of the important technologies in the field of drilling in the twenty-first century. This paper, by investigating the progress of multi-branch well at home and abroad, focuses on the types of multi-branch well and the application of key drilling and completion technologies, as well as the application of multi-branch well technology in the oilfield, and gives an outlook on the current multi-branch well technology.