Method of joining two portions of an underwater pipeline for conducting fluids and/or gas

摘要

A method of joining two portions of an underwater pipeline for conducting fluid and/or gas on the bed of a body of water, the method including the steps of: joining a telescopic sleeve, having a first coupling head, to a first end of a first pipeline portion above the body of water; positioning the first end, the telescopic sleeve, and the first coupling head in a first given position on the bed of the body of water; joining a second coupling head to a second end of a second pipeline portion above the body of water; positioning the second end and the second coupling head in a second given position, close to the first coupling head, below the body of water; and connecting the first and second coupling head hermetically below the body of water.

主权项

1. A method of joining two portions of an underwater pipeline for conducting fluid and/or gas on the bed of a body of water; the method comprising the steps of:
positioning a cradle on the bed of the body of water; joining a telescopic sleeve, having a first coupling head, to a first end of a first pipeline portion above the body of water; lowering the first end, the telescopic sleeve, and the first coupling head in the body of water; lowering, after positioning the cradle on the bed of the body of water, the first end, the telescopic sleeve, and the first coupling head onto the cradle to guide the first coupling head into a first given position; joining a second coupling head to a second end of a second pipeline portion above the body of water; lowering the second end and the second coupling head in the body of water; lowering the second end and the second coupling head onto the cradle to guide the second coupling head into a second given position close to the first coupling head; and connecting the first and second coupling heads hermetically in the body of water and on the cradle.