Environmental Impact in Sediments and Seawater due to Discharges of Ba, 226 Ra, 228 Ra, V, Ni and Pb by Produced Water from the Bacia de Campos Oil Field Offshore Platforms

Abstract Western offshore oil field in India has nearly 300 offshore platforms for oil and gas exploration, of which almost 50% of platforms have outlived their life. Life extension of these platforms has become essential for further production activities. In many cases, design level analyses combined with ultimate strength assessment, life extension has been granted. However, risk-based assessment based on the probability of failure based on available reserve strength linked to additional life extension could be a logical method. The Reserve Strength Ratio (RSR) is defined as a ratio of reserve capacity of the jacket structure and the design level environmental loads (1 year or 5year or 10 year or 100-year return period). The encounter probability of these design storms for the life extension period has been established probability for the extension period has been used as a threshold to determining the required RSR using the probability of collapse. For the present study, four typical aged wellhead platforms with different water depths are selected, and RSR is evaluated by carrying out push over analysis. The Monte Carlo Simulation method is used to generate the statistical values of RSR. The probability of failure is then calculated by First Order Reliability Method (FORM) using MATLAB for different RSR values. Reassessment criteria for the existing offshore platforms have been described from the reliability analysis results based on probability failure and encounter probability.

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The Role of the Supplier of Production Chemicals in Managing the Environmental Impact of Produced Water in Offshore Oil and Gas Production

Produced Water 2 ◽

10.1007/978-1-4613-0379-4_26 ◽

1996 ◽

pp. 289-294

Author(s):

Albert Bos

Keyword(s):

Environmental Impact ◽

Oil And Gas ◽

Produced Water ◽

Gas Production ◽

Oil And Gas Production ◽

Offshore Oil And Gas ◽

Offshore Oil

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Ultrafiltration Membrane Technology for Oily Wastewater Treatment

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/877/1/012012 ◽

2021 ◽

Vol 877 (1) ◽

pp. 012012

Author(s):

Zahraa N. Mahbouba ◽

Abdulkhalik K. Mahmood ◽

Musa H. Alshammari

Keyword(s):

Water Reuse ◽

Oil And Gas ◽

Produced Water ◽

Total Suspended Solid ◽

Treatment Method ◽

Suspended Solid ◽

Ultrafiltration Membrane ◽

Oil Field ◽

Oily Wastewater ◽

Oil And Grease

Abstract Oil and gas sectors generate large amounts of oily wastewater, which is called produced water. In which, it contains high concentrations of hazardous organic and inorganic pollutants. This paper attempts to evaluate the performance and quality of using a polyethersulfone ultrafiltration membrane (UFM) to treat the produced water of Al-Ahdab oil field (Wassit, Iraq). 8 rectangular flat sheets of polyethersulfone ultrafiltration membrane were used. The area of each is 60 cm2 and pore size about 15 nm used in the experimental work. Prepared UFM is characterized by determining the surface morphology by scanning electron microscopy (SEM). The result showed that the UFM indicated high removal efficiency in all parameters and especially oil and grease and total suspended solid but in general it still less than the requirement of water reuse. The results showed that, a combination of a conventional treatment method and UFM technology have higher efficiency than using UFM only.

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