With the increase of society's demand for energy, the improvement of oil and gas resources has accelerated, and the environmental problems caused by it have become more and more prominent. Oil and gas improvement is a systematic project with a long duration and complex skills. The environmental problems it causes are bound to be complex and diverse. The research purpose of this paper is the application of environmental and economic profit and loss analysis in the environmental impact assessment of offshore oil and gas improvement. In the experiment, taking M city as the research object, an evaluation system was established to investigate and analyze the impact of offshore oil and gas improvement on marine engineering ecology and the analysis of spatial changes in ecological environment and economic damage. The experimental results show that the environmental damage of the sea area affects the economic improvement of the aquatic industry. The economic improvement of the aquatic industry in M city is worse as the ecological environment is damaged, and the industrial economic improvement is worse.

Amar Charu. Environmental Economic Profit and Loss Analysis in Environmental Assessment of Offshore Oil and Gas Improvement. Frontiers in Ocean Engineering (2021), Vol. 2, Issue 3: 37-45. https://doi.org/10.38007/FOE.2021.020305.

[1] Mcbarnet A . Ion takes the plunge into OBN market. Upstream: The International Oil & Gas Newspaper, 2019, 24(37):26-27.

[2] Evdoschuk M I , Mukhtarova K Z . Influence of geological evolution conditions on the oil and gas structures formation in Baku archipelago. Geology and Mineral Resources of World Ocean, 2019, 15(3):42-56. https://doi.org/10.15407/gpimo2019.03.042

[3] A C N S , B E V . Nonstationary fuzzy forecasting of wind and wave climate in very long-term scales - ScienceDirect. Journal of Ocean Engineering and Science, 2018, 3( 2):144-155. https://doi.org/10.1016/j.joes.2018.04.001

[4] Nayak M . WesternGeco's Oil Exploration Patents Thrown Out by Appeals Court (1). World intellectual property report, 2018, 32(6):33-34.

[5] Chetwynd G . Two pitch in for Sete Brasil rigs. Upstream the International Oil & Gas Newspaper, 2019, 24(14):17-17.

[6] Mcbarnet A . Competition grows in surface versus seabed challenge. Upstream the International Oil & Gas Newspaper, 2019, 24(37):24-25.

[7] Yihe I . Pemex charters jack-ups owned by CIMC Raffles. Upstream: The International Oil & Gas Newspaper, 2019, 24(35):16-16.

[8] Jz A , Dl B , Wei C B , et al. In situ marine exposure study on corrosion behaviors of five alloys in coastal waters of western Pacific Ocean - ScienceDirect. Journal of Materials Research and Technology, 2020, 9( 4):8104-8116. https://doi.org/10.1016/j.jmrt.2020.05.060

[9] Schmidt K . Shell tops US Gulf bid list. Upstream: The International Oil & Gas Newspaper, 2019, 24(12):6-6.

[10] Torterotot M , Samaran F , Royer J Y . Sounds from airguns and blue whales recorded from a long term hydrophone network in the Southern Indian Ocean. The Journal of the Acoustical Society of America, 2019, 146(4):2939-2939. https://doi.org/10.1121/1.5137204

[11] Levashov S P , Yakymchuk N A , Korchagin I N , et al. Mobile direct-prospecting technologies: some results of their application for oil and gas searching within offshore. Geology and Mineral Resources of World Ocean, 2018, 14(3):81-116. https://doi.org/10.15407/gpimo2018.03.082

[12] Watts R . CNOOC set for North Sea action. Upstream the International Oil & Gas Newspaper, 2019, 24(25):5-5.

[13] Clark S R . Dust Mitigation Employing A Program Based Approach. Journal of Environmental Solutions for Oil Gas and Mining, 2019, 5(1):57-77. https://doi.org/10.3992/2377-3545-5.1.57

[14] Johansen E . Norway's Integrated Ocean Management: A Need for Stronger Protection of the Environment?. Ocean Yearbook, 2018, 32(1):239-263. https://doi.org/10.1163/22116001-03201010

[15] Khizhnyak A V , Sedlerova O V , Fedorovsky O D . Hydrophysical and geological peculiarities, methods and model of aerospace monitoring for the purpose of hydrocarbon deposits prospecting on the sea shelf. Geology and Mineral Resources of World Ocean, 2019, 15(2):91-98. https://doi.org/10.15407/gpimo2019.02.091

[16] Islam A . Dynamic characteristics and fatigue damage prediction of FRP strengthened marine riser. Ocean Systems Engineering, 2018, 8(1):21-32.

[17] Matikolaei J B , Bidokhti A A , Shiea M . Some aspects of the deep abyssal overflow between the middle and southern basins of the Caspian Sea. Ocean Science, 2019, 15(2):459-476. https://doi.org/10.5194/os-15-459-2019

[18] Berchet A , Pison I , Crill P M , et al. Using ship-borne observations of methane isotopic ratio in the Arctic Ocean to understand methane sources in the Arctic. Atmospheric Chemistry and Physics, 2020, 20(6):3987-3998. https://doi.org/10.5194/acp-20-3987-2020