WELLHEAD MOUNTING TECHNOLOGY Russian patent published in 2021 - IPC E21B43/12 E21B34/02 

FIELD: oil and gas industry.

SUBSTANCE: wellhead piping contains a well production pipeline connected to the wellhead tree. The well product discharge pipeline includes a flow cutoff device connected to a device for preventing backflow of well product, with a pressure and temperature sampling and control device connected to a well product sampling device. The selection device is connected to the Christmas tree of the well, the pipeline for supplying the working agent of the gas-lift gas system is connected to the Christmas tree and includes a first shut-off device connected to a device for preventing backflow of the working medium and to a second shut-off device connected to a quick-disconnect connection. The device for preventing the reverse flow of the working medium is connected to the wellhead tree. The elements of the pipeline for the withdrawal of well products and the pipeline for supplying the working agent of the gas-lift gas system are connected to each other and to the Christmas tree with the help of mounting parts, which are sections of pipelines with connecting parts and fasteners and made using welding, threaded or quick-disconnect joints. The elements of the mounting parts are made with a technological allowance for adjustment at the installation site.

EFFECT: reduced installation time, improved quality and reliability by increasing the degree of factory readiness.

11 cl, 2 dwg