Bohai Oilfield: Build China's largest crude oil production base with science and technology and green

Guo Jianglong, an I&C engineer at the CEPI Management Center of Qinhuangdao 32-6 Oilfield, is conducting data analysis on trackless intelligent robots to ensure the stable operation of
the oilfield's power distribution system.
"Handheld terminal devices can realize functions such as approval of work orders, real-time communication, and problem reporting, and the personnel positioning system can monitor various health data of employees to ensure the working status of personnel, and the addition of intelligent inspection robots and drones has changed the traditional way of working and improved work efficiency
.
" These technological smart devices have rejuvenated this 20-year-old oil field.

Guo Jianglong said
.

In 2021, China's first offshore intelligent oilfield construction project, the Qinhuangdao 32-6 Intelligent Oilfield (Phase I) project of CNOOC Tianjin Branch, was fully completed and put into use
.
It uses cloud computing, big data, artificial intelligence, 5G and other technologies to "empower" traditional oilfields, so that this 20-year-old oilfield has comprehensive perception, intelligent management and remote control management and other capabilities, which has opened the curtain
for China's offshore oil platform to fully move towards digitalization and intelligence.

Bohai Oilfield is the largest offshore oilfield in China and the largest crude oil production base in China, achieving crude oil production of more than 30 million tons in 2021, and the increase in crude oil has accounted for nearly 50% of China's crude oil increase.

Offshore oil exploration is inseparable from relevant theoretical innovations
.
In the past ten years, Bohai Oilfield has made major breakthroughs in the theoretical understanding and technology of oil and gas exploration and development, innovatively put forward the theory of "lake basin gas formation" and the theory of "convergence ridge" accumulation, and discovered many hundreds of millions of tons of oil and gas fields
based on innovative theories.

In 2019, CNOOC "Xiti" Bozhong 19-6 condensate gas field, which is the first 100 billion square meters of gas field explored and discovered in eastern China, the gas field for the first time adopts the circulating gas injection development scheme and deep dehydration TEG (triethylene glycol dehydration) system, designed and laid 53 MPa ultra-high pressure natural gas gas injection sea pipe, a number of breakthroughs will fill the "technical gap" of China's offshore oil and gas field development, leading the Bohai Bay Basin into a new era of "oil and gas at the same time
".

In 2021, Bohai Oilfield formed three major technical systems, including "zero discharge in the whole process of Bohai drilling and completion, supporting the thinning drilling and completion of Bohai Oilfield, and key technology of large displacement wells in extremely loose formations of the Bohai Neogene Neogene system", which repeatedly set the record of the shortest drilling cycle of CNOOC with a well depth of 5,000 meters to 5,500 meters, and promoted a number of key drilling and completion technologies in China's offshore waters to reach the international leading level
.

Subsequently, Bohai Oilfield innovatively proposed a heat injection scheme of progressive preheating formation, and used the heat recovery technology system of steam throughput from horizontal wells of ultra-heavy oil to successfully put into operation the world's first offshore large-scale ultra-heavy oil thermal recovery development oilfield - Luda 5-2 North Oilfield Phase I Project in 2022, and at the same time formed a complete set of offshore ultra-heavy oilfield development technology system, overcoming the problem of heavy oil exploitation in Bohai Oilfield and successfully awakening sleeping underground resources
.

In the decade from 2012 to 2022, Bohai Oilfield successively discovered 700 million tons of oil and gas fields, including Bozhong 19-6, Penglai 9-1, Kenli 6-1, and Kenli 10-2, which played a "ballast" role
for China's offshore oil and gas exploration and development.

To achieve China's "dual carbon" goal, energy is the main battlefield
.
In 2022, on the basis of the introduction of shore power, Bohai Oilfield successfully realized the "green power" into the sea, completed the largest single green power trading volume of CNOOC so far, with a total transaction volume of 186 million kWh, and transmitted green wind and solar energy from Zhangjiakou City, Hebei Province, China to the Bohai Sea through high-voltage lines, and connected to 29 offshore production platforms in Qinhuangdao 32-6 oilfield and Caofeidian 11-1 oilfield group, making new energy from Chinese mainland become the power engine of Bohai offshore production platform
。

Over the past decade, Bohai Oilfield has adhered to scientific and technological production increase and low-carbon transformation, green development and intelligent management, injected technology and green into traditional energy enterprises, and written a new chapter
in the high-quality development of China's offshore oil industry.