Congratulations on Qingdao Jiaozhou Bay Submarine Natural Gas Pipeline Project Completion

Qingdao Jiaozhou Bay Submarine Natural Gas Pipeline Project, with a total length of 72km and a submarine section of 12km, the designed total gas transmission capacity is 3.6 billion cubic meters per year. 

As the first large-diameter high-pressure natural gas pipeline to enter the urban area, this urban energy and gas transmission "Main Artery" has created three "National First".

◆ Urban gas pipeline with the longest distance to the sea

◆ The first natural gas pipeline to cross the sea-crossing mega bridge

◆The first natural gas pipeline laid by "directional drilling" technology from land to sea

Client: Qingdao Energy Huarun Gas Co., Ltd.

EPC General Contract: PetroChina

Construction Contrctor: Tianjin Timeast Offshore Engineering Co., Ltd.

Timeast Work Scope:

◇ Obtaining the land use right for site, and site construction according to the requirements of floating pulling and welding;

◇ Installing and removing the positioning steel pipe of 10.91Km route;

◇ Positioning and installing 10.91km pipeline;

◇Offshore tie-in, including connection with directional drilling pipe;

◇Bend Connection at KP8.54.

Site Construction

Iignition and Welding

Pipeline Prefabrication

Temporary Positioning Pile

Buoy Binding

Pipeline Launching into the Sea

Pipeline Section Float Pulling

Pipeline Section Float Pulling

Pipeline In Place

Pipeline Sinking

Buoy Recycling

Offshore Pipeline Section Tie-in

Pipeline Landing

Dam Reinstatement

Site Reinstatement

Qingdao Jiaozhou Bay Submarine Natural Gas Pipeline Project is characterized by large pipe diameter (914mm), 100mm counterweight layer, high construction quality requirements, changeable water depth affected by tides and complex construction organization. Relying on years of technical experience in pipeline float pulling construction and project team members high solidarity and cooperation, Timeast has safely and efficiently completed 22 pipeline sections float pulling into the sea, offshore pipeline section tie-in and pipeline landing in the spirit of perseverance, no matter how harsh the environment is. It has ensured the successful completion of Qingdao Jiaozhou Bay Submarine Natural Gas Pipeline Project.

S-Lay Barge TIAN YI 601

Project Team Group Photo