Technology Research Of Original Alignment And Connection For Deepwater Pipelines

On the growing demand for oil resources in the circumstances, people are eyeing Ocean. Expected in this century, marine oil and gas development, particularly the deep sea will be more and more people's attention. The pipeline about Tie-in technology is the key to the entire oil and gas exploitation. Dissertation topic is the National 863 Plan—deepwater submarine pipeline laying technology part of the subject, and the purpose is to develop the original alignment and connection systems with independent intellectual property rights, resulting in the development of deep-sea Tie-in technology to access an important step.Paper analyzed the factors affecting the operations of deepwater pipeline Tie-in technology, and compared with the original alignment and connection at the pipeline connecting about the different ways, then confirmed deepwater pipeline at the original alignment and connection to the overall programme.Paper design of a pipeline of machinery on the original alignment, and the equipment mainly consists of the Reaction Tool and the Axial Force Tool. The Reaction Tool can replace underwater buildings. It was attached to the clamping and connecting pipeline and the pipeline for the Axial Force Tool at the beginning, and it can be offset the momentum by the Axial Force Tool generated at the machines, then the Pipeline Alignment and connectivity; the Axial Force Tool equipment is the role of drag pipes can be driven to achieve horizontal and vertical adjustments, and the machines combine to drag on the deepwater submarine pipeline.Paper designed a system on flange automatically connect machines, mainly from the Nuts and Bolts Magazine consists of two parts. The Bolts Magazine stockpiling bolts, installed in the welding flange side activity; the Nuts Magazine release inventory, installed in a fixed welding flange side. Through two tools with the Bolts Magazine inserted bolts, the Nuts Magazine tighten the nuts, thus realizing the pipeline flange connection. ANSYS analysis software through the the original alignment and connection systems parts of the static mechanical analysis, and certificated the structure is reasonable.