Drilling Waste Handling in Challenging Offshore Operations (Russian)

Svensen, Torgrim; Taugbøl, Knut

doi:10.2118/149575-ru

Cited by 6 publications

(7 citation statements)

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“…Hence, in the case of lack of valid historical data, expert judgment plays a crucial role during potential hazard and risk analysis [2,6]. Expert judgment is important for identifying and assessing all influencing factors, which can affect the waste handling system performance and safety of the system.…”

Section: Stage 2: Risk Analysismentioning

confidence: 99%

“…Moreover, in addition to the "expected" downtime in the North Sea, for Arctic skip-and-ship operation, it is advisable to consider the downtime periods due to extended delays caused by the harsh operating condition of the region. For instance, as mentioned above, during winters the skip-and-ship operation in the Arctic experiences long lead times due to drilling cuttings being frozen, stuck in skips while waiting to get emptied onshore for further treatment [6]. Further, in some areas of the Arctic region, between 65 and 70% extra costs incurred during drilling waste handling activities are weather related [46].…”

Section: Riskmentioning

confidence: 99%

“…11) and the requirements for risk management during petroleum exploration (Petroleum Safety Authority Management Regulations, Secs. [3][4][5][6]. Complying with the regulations can reduce future liability costs.…”

Section: Discharge To Oceanmentioning

confidence: 99%

“…The ranges of possible waste management solutions, the technological advances, and the new concepts in Arctic drilling pose their own peculiar demands and affect the waste management decision-making process [6][7][8]. When looking for a safe and sustainable solution to waste management problems associated with the drilling and completion of oil wells in the Arctic offshore, cost and prevailing legislation are the two main issues that need to be considered [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…The region is characterized by varying forms and amounts of icing, very strong winds, and polar lows, all of which can affect the cost-and risk profile of drilling waste handling practices. For instance, the offshore industry in the region is experiencing longer lead times due to frozen drilling cuttings being stuck in skips while waiting to get emptied onshore for further treatment [6]. This means that the longer the lead-time, the higher the cost of the waste handling practice will become.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Risk-Based Cost-Effectiveness Analysis of Waste Handling Practices in the Arctic Drilling Operation

Ayele

Barabadi

Droguett

2016

Journal of Offshore Mechanics and Arctic Engineering

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As oil and gas companies in the Arctic attempt to maximize the value of each project and optimize their portfolio of investment opportunities, it has become vital to evaluate drilling waste handling practices for their cost-effectiveness in order to support strategic decisions. Identifying cost-effective waste handling practices, which have a minimal environmental footprint, however, is one of the biggest challenges for Arctic offshore industries. The cost and potential risks of drilling waste handling practices in the Arctic offshore operation will differ vastly, depending on the operating environment such as the ice conditions and negative sea temperature. However, in the majority of the available cost-effectiveness and risk analysis literature, the influence of the operating environment on the cost and risk profile has received less attention. Hence, the aim of this paper is to propose a methodology for risk-based cost-effectiveness analysis (RB-CEA) of drilling waste handling practices by considering the complex and fast-changing nature of the Arctic. The central thrust of this paper is to highlight the fact that comparing different alternatives based on the cost elements alone is misleading. The proposed methodology uses risk assessment as a key component for the cost-effectiveness analysis (CEA). The application of the proposed methodology is demonstrated by a case study of the drilling waste handling practices of an oil field in the Barents Sea. The case study results demonstrate that the operating environment causes costs to be between 1.18 and 1.52 times greater, depending on the type of practices and operating season, in the Arctic offshore compared with the North Sea. Further, the risk of undesirable events is between 1.48 and 2.60 times greater during waste handling activities under Arctic operational conditions.Research Council of Norway ENI Norge AS through the EWMA (Environmental Waste Management) projec

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Section: Stage 2: Risk Analysismentioning

confidence: 99%

Section: Riskmentioning

confidence: 99%