The longest deepwater oil and gas pipeline in China has been laid and completed
AD |
Science and Technology Daily reporter Cao XiuyingOn June 22nd, in the Lingshui Sea area in the southeast of Hainan Island, with the termination of the closure and entry into the water, the key control project of the "Deep Sea No.1" ultra deep water atmospheric field phase II - the laying of the 20 inch submarine long-distance pipeline - was completed
Science and Technology Daily reporter Cao Xiuying
On June 22nd, in the Lingshui Sea area in the southeast of Hainan Island, with the termination of the closure and entry into the water, the key control project of the "Deep Sea No.1" ultra deep water atmospheric field phase II - the laying of the 20 inch submarine long-distance pipeline - was completed. This is the longest deepwater oil and gas pipeline in China, marking an important breakthrough in China's deepwater long-distance pipeline construction capacity and deepwater equipment technology.
The second phase of the "Deepsea No.1" project is approximately 130 kilometers away from Sanya, Hainan, and is located between the Yacheng 13-1 gas field and the "Deepsea No.1" energy station. The maximum operating water depth in the area is nearly 1000 meters, and the proven geological reserves of natural gas reach 50 billion cubic meters. After being put into operation, the peak annual production of the "Deepsea No.1" atmospheric field can be increased from 3 billion cubic meters to 4.5 billion cubic meters, becoming an important gas source to ensure China's energy security.
In order to efficiently and economically develop the second phase of "Deepwater No.1" project, CNOOC pioneered the oil and gas development mode of "underwater production system+shallow water jacket processing platform+deepwater Semi-submersible platform remote control system". On the one hand, a new oil and gas production and processing platform will be built in the shallow water area to connect with the Yacheng 13-1 gas field, and the oil and natural gas extracted from the second phase of the "Deep Sea No.1" project will be transported through a large-diameter subsea pipeline; On the other hand, the underwater production system of the "Deep Sea One" Phase II project is connected to the control system of the "Deep Sea One" energy station through a deep-sea umbilical cable, achieving remote control. Wu Hualin, Deputy Manager of the Deepwater Pipeline and Cable Department of the "Deep Sea No.1" Phase II Project of CNOOC Hainan Branch, introduced.
Submarine pipelines are the lifeline for ensuring the smooth transportation of offshore oil and gas. The second phase of the "Deep Sea No.1" project is China's first deepwater high-pressure gas field. The oil and gas extracted from the formation have complex composition, high temperature, and high pressure, and conventional materials of submarine pipes cannot meet production needs. China National Offshore Oil Corporation (CNOOC) has for the first time applied the combination plan of "114 kilometers of deepwater large-diameter seamless steel pipes+1.5 kilometers of deepwater bimetallic composite pipes" in a deepwater environment, building the "aorta" connecting the oil and gas transportation of the "Deepsea No.1" Phase II project.
This submarine pipeline is specially designed for the "mixed transportation of high-temperature, high-pressure, and strongly corrosive oil and gas". The pipeline design pressure can reach 38.8 MPa, and can transport oil and gas at a high temperature of 120 degrees Celsius. The maximum wall thickness reaches 38 millimeters, setting a new record for the wall thickness of offshore pipelines in China. Hou Jing, the chief engineer of the Phase II project of the "Deep Sea No.1" project, introduced: "We have collaborated with domestic manufacturers to optimize chemical composition, adopt high-precision rolling technology and advanced heat treatment technology, meet the requirements of high strength and high toughness indicators, achieve the full process of domestic production in research and development, and provide strong support for China's ultra deep water oil and gas development equipment
As the water depth increases, the difficulty of constructing submarine pipeline projects increases exponentially. The second phase of the "Deep Sea No.1" project is located in a sea area with complex geological conditions, including various complex terrains such as submarine steep slopes and large-scale sand slopes and ridges. It is the largest underwater pipeline in China with the largest water depth span, posing great challenges to engineering design, ship equipment capabilities, and offshore installation technology.
According to Guo Qing, the general contracting project manager of the "Deep Sea No.1" Phase II project of CNOOC Engineering, the project team has conducted extensive calculations and analyses on the suspended spans of offshore pipelines under different geological conditions in response to complex routing situations. They have successfully solved world-class submarine pipeline engineering technical problems such as ultra long and ultra high suspended spans, and have made adaptive modifications to the key equipment of the main operating vessel "Offshore Oil 201", We have independently developed the first fully automatic welding equipment process for large diameter and thick wall offshore pipelines in China, achieving more than 10 technological breakthroughs. During construction, we have set a record for the laying speed of domestic 20 inch deep-water pipelines of 2.65 kilometers per day.
It is understood that up to now, China has laid over 9000 kilometers of offshore oil and gas pipelines, which is equivalent to the distance of the Shanghai Paris route.
(Image provided by CNOOC)
Disclaimer: The content of this article is sourced from the internet. The copyright of the text, images, and other materials belongs to the original author. The platform reprints the materials for the purpose of conveying more information. The content of the article is for reference and learning only, and should not be used for commercial purposes. If it infringes on your legitimate rights and interests, please contact us promptly and we will handle it as soon as possible! We respect copyright and are committed to protecting it. Thank you for sharing.(Email:[email protected])
Mobile advertising space rental |
Tag: and The longest deepwater oil gas pipeline in China
Indonesia's Yawan High Speed Rail Joint Debugging and Trial Speed Reaches 350 kilometers per hour
NextWhat is the Difficulty in Mass Production of Solid-state battery
Guess you like
-
China Leads in Developing IEC 63206 International Standard, Driving Global Innovation in Industrial Process Control System RecordersDetail
2025-01-18 11:06:14 1
-
The 2024 Micro-Short Series Industry Ecological Insight Report: 647,000 Job Opportunities, Rise of Diversified Business Models, and High-Quality Content as the Future TrendDetail
2025-01-17 17:33:01 1
-
Global PC Market Shows Moderate Recovery in 2024: High AIPC Prices a Bottleneck, Huge Growth Potential in 2025Detail
2025-01-17 11:02:09 1
-
Bosch's Smart Cockpit Platform Surpasses 2 Million Units Shipped, Showcasing Strength in Intelligent Driving TechnologyDetail
2025-01-17 10:55:29 1
-
YY Guangzhou Awarded "2024 Network Information Security Support Unit" for Outstanding ContributionsDetail
2025-01-17 10:43:28 1
-
TikTok CEO Invited to Trump's Inauguration, Biden Administration May Delay BanDetail
2025-01-16 20:06:11 1
-
Douyin Denies Opening International Registration: Overseas IPs Don't Equate to Overseas Registration; Platform Actively Combats Account ImpersonationDetail
2025-01-16 14:26:12 1
-
Lei Jun, Xiaomi's founder, chairman, and CEO, has set a new goal: learning to drive a forklift!Detail
2025-01-15 10:22:30 11
-
ByteDance Scholarship 2024: Fifteen Outstanding Doctoral Students Awarded RMB 100,000 Each to Advance Frontier Technology ExplorationDetail
2025-01-14 15:56:39 1
-
Fliggy Launches "Peace of Mind for the New Year" Service Initiative to Ensure Smooth Travel During the Year of the Snake Spring Festival RushDetail
2025-01-14 15:24:53 1
-
Arm's Massive Fee Hike and Potential In-House Chip Development: A Precursor to a Seismic Shift in the Chip Industry?Detail
2025-01-14 11:02:36 1
-
Adobe Firefly Launches: Generative AI Suite Revolutionizes Image and Video Processing EfficiencyDetail
2025-01-14 10:46:39 1
-
Chinese New Year Elements Sell Like Hotcakes Overseas: Cross-border E-commerce "Spring Festival Economy" Booms, Cainiao Overseas Warehouses Help Merchants Capture Market ShareDetail
2025-01-13 14:17:50 1
-
China Railway's 12306 System Successfully Navigates Spring Festival Travel RushDetail
2025-01-13 12:56:54 1
-
Handan, Hebei Province Successfully Tests First Low-Altitude Drone Delivery Route, Ushering in a New Era of Smart LogisticsDetail
2025-01-13 12:50:13 1
-
Kuaishou Leads in Developing Anti-Fraud Industry Standards, Contributing to a Secure and Reliable Short-Video CommunityDetail
2025-01-13 09:47:32 11
-
Microsoft Offers Top Salaries to Retain AI Talent: AI Software Engineers Earn Over $400,000 AnnuallyDetail
2025-01-12 17:28:34 11
- Detail
-
Chang'e-5 Mission Unveils Secrets: New Discoveries Regarding Lunar Magnetic Field Strength and Deep Dynamics 2 Billion Years AgoDetail
2025-01-10 11:42:44 11
-
SenseTime's "Day Day New" Multimodal Large Model: Native Fusion Enables Diverse ApplicationsDetail
2025-01-10 11:40:40 21