A Model For Evaluating The Impact Of Federal Policy On Offshore Oil And Gas Recovery

1979 ◽  
Author(s):  
J.P. Brashear ◽  
F.P. Morra ◽  
F.H. Murphy ◽  
R.P. Ciliano ◽  
W.J. Hery
Keyword(s):  
Oil And Gas ◽  
Federal Policy ◽  
Gas Recovery ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
The Impact

Statistical Analyses of Solo and Joint Bids for Federal Offshore Oil and Gas Leases

1978 ◽  
Vol 18 (02) ◽  
pp. 87-95 ◽  
Author(s):  
Elmer L. Dougherty ◽  
John Lohrenz
Keyword(s):  
Oil And Gas ◽  
British Petroleum ◽  
Outer Continental Shelf ◽  
Oil Companies ◽  
The Government ◽  
Offshore Oil And Gas ◽  
Definition Of ◽  
Offshore Oil ◽  
The Impact ◽  
The U.S

Abstract This study of Outer Continental Shelf (OCS) bid data, plus a critical analysis of other such studies, was made to determine the impact of joint bidding on competitiveness of OCS lease sales, It concludes that no class of joint bids has been shown to reduce the level of competition. Banning joint bidding by two or more major oil companies did result in an abrupt increase in the number of pint bids that included one major. Introduction Sealed, competitive bids for U.S. offshore oil and gas leases are classed as either solo or joint bids. Solo bids are submitted by one bidder with 100-percent ownership. Joint bids are submitted by several bidders who divide ownership among themselves. The pragmatic question that triggered this study was, "Is there a kind of solo or joint bid whose occurrence tends to decrease the number of sealed, competitive bids?" Such a bid would lower the level of competition. This study reports the results of a statistical analysis to measure the impact of joint bidding on the level of competition in sales of U.S. oil and gas leases. The study first presumed that the level of competition increases as the number of competing bids increases. This presumption while not unassailable, also was not unreasonable. Three previous studies of solo and joint bidding were reviewed first, revealing that conclusions drawn by two of the studies are statistically unsupported. Our study of the pragmatic question found no consistent correlation supporting a positive answer to the question. The U.S. policy regulation proscribing joint bids involving two or more majors tended to broaden the proportion and number of bids involving majors. REVIEW OF PREVIOUS STUDIES OF FEDERAL OFFSHORE SOLO AND JOINT BIDS Joint bidding for U.S. offshore oil and gas leases has been seated in previous studies of which three will be reviewed in detail. GASKINS AND VANN Gaskins and Vann computed values of the ratio of the sum of the highest bids to the sum of the U.S. presale estimates, Fmax/est, for leases that presale estimates, Fmax/est, for leases that received the same number(s) of bids. Precise definition of Fmax/est is given in the Nomenclature. Gaskins and Vann observed that values of F increased with n, from which they concluded the "government gets a larger percentage of its estimated value when there are more bidders." For the March 28, 1974, sale, Gaskins and Vann calculated Fmax/est for four different categories of highest bids:all bids,bids in which only nonmajors were involved,bids in which one or more majors were involved, andbids in which Mobil Oil Corp. was a participant. (No list was given of which bidders are classed as major.) Values of Fmax/est when majors and/or Mobil were involved in the highest bid were more often lower than for the other categories of highest bids. From this, Gaskins and Vann concluded that the "data support the hypothesis that major oil companies, and Mobil in particular, were able to attain lower winning bids..." We recalculated values of F,../est for the March 28, 1974, sale. These are shown in Table 12 along with comparable values of Fm../mean and Fmean/est. The agreement between values of Fmax/est presented by Gaskins and Vann and in Table 1 is excellent in most cases. Some of the differences, however, may be explained by differing definitions of majors. We considered these eight companies as major: Amoco International Oil Co., British Petroleum Ltd., Chevron U.S.A. Inc., Exxon Corp., Gulf Oil Corp., Mobil Oil Corp., Shell Oil Co., Texaco Inc. Other differences may be caused by disagreements in source data and/or computations.

Omics-based approaches and their use in the assessment of microbial-influenced corrosion of metals

2016 ◽  
Vol 34 (1-2) ◽  
pp. 1-15 ◽  
Author(s):  
David J. Beale ◽  
Avinash V. Karpe ◽  
Snehal Jadhav ◽  
Tim H. Muster ◽  
Enzo A. Palombo
Keyword(s):  
Oil And Gas ◽  
Secondary Effects ◽  
Complex Processes ◽  
Piped Water ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
The Impact ◽  
Insight Into

AbstractMicrobial-influenced corrosion (MIC) has been known to have economic, environmental, and social implications to offshore oil and gas pipelines, concrete structures, and piped water assets. While corrosion itself is a relatively simple process, the localised manner of corrosion makes in situ assessments difficult. Furthermore, corrosion assessments tend to be measured as part of a forensic investigation. Compounding the issue further is the impact of microbiological/biofilm processes, where corrosion is influenced by the complex processes of different microorganisms performing different electrochemical reactions and secreting proteins and metabolites that can have secondary effects. While traditional microbiological culture-dependent techniques and electrochemical/physical assessments provide some insight into corrosion activity, the identity and role of microbial communities that are related to corrosion and corrosion inhibition in different materials and in different environments are scarce. One avenue to explore MIC and MIC inhibition is through the application of omics-based techniques, where insight into the bacterial population in terms of diversification and their metabolism can be further understood. As such, this paper discusses the recent progresses made in a number of fields that have used omics-based applications to improve the fundamental understanding of biofilms and MIC processes.

scholarly journals An allision risk model for passing vessels and offshore oil and gas installations on the Norwegian Continental Shelf

2020 ◽  
Vol 235 (1) ◽  
pp. 17-32
Author(s):  
Martin Hassel ◽  
Ingrid Bouwer Utne ◽  
Jan Erik Vinnem
Keyword(s):  
Continental Shelf ◽  
Oil And Gas ◽  
Risk Model ◽  
Industry Standard ◽  
Satisfactory Performance ◽  
Offshore Installations ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
The Impact ◽  
Norwegian Continental Shelf

This article presents a new risk model for estimating the probability of allision risk (the impact between a ship under way and a stationary installation) from passing vessels on the Norwegian Continental Shelf (NCS). Offshore petroleum operators on the NCS are required by the Norwegian Petroleum Safety Authority (PSA) to perform risk assessments to estimate the probability of impacts between ships and offshore installations, both for field related and passing (merchant) vessels. This has typically been done using the aging industry standard COLLIDE risk model, but this article presents a new risk model based on a Bayesian Belief Network (BBN) that can replace the old COLLIDE model for passing vessels. The new risk model incorporates a wider range of risk influencing factors (RIFs) and enables a holistic and detailed analysis of risk factors, barrier elements and dependencies. Even though the risk of allision with passing vessels is very small, the potential consequences can be critical. The new risk model is more transparent and provides a better understanding of the mechanisms behind allision risk calculations. The results from the new model are aligned with industry expectations, indicating an overall satisfactory performance. The article discusses several key elements, such as the use of expert judgement to estimate RIFs when no empirical data is available, model sensitivity, and a comparative assessment of the new risk model to the old COLLIDE model.

Understanding the Impacts of Backpressure & Risk Analysis of Different Gas Hydrate Blockage Scenarios on the Integrity of Subsea Flowlines

2021 ◽  
Author(s):  
Ebuka Umeh ◽  
Maurice Ephraim ◽  
Nitonye Samson
Keyword(s):  
Oil And Gas ◽  
Hydrate Formation ◽  
Operating Conditions ◽  
Von Mises Stress ◽  
Hydrate Deposition ◽  
Design Values ◽  
Offshore Oil And Gas ◽  
Von Mises ◽  
Offshore Oil ◽  
The Impact

Abstract Offshore oil and gas pipelines are subjected to high pressure and high temperature (HP/HT) from the inner hydrocarbon content during operation. Both the rise in temperature and internal pressure may cause longitudinal expansion of the pipeline. This expansion is restrained or semi-restrained by the pipe end devices and the soil which results in build-up of compression stresses in the pipe wall. These pipelines are also exposed to so many familiar and unfamiliar forces related to static, dynamic and environmental forces. This study presents a thorough review of various sources from literature on the integrity challenges of subsea flowlines and pipelines amid challenging operating conditions especially with regards to flow assurance. This paper evaluates the impact of hydrate deposition and agitation on the overall integrity of the subsea flowlines, riser-base and fitting e.g. elbows, valves e.t.c. A bow tie model was developed to determine the threats, causes, consequences, the top event and the impending hydrates that are to be designed and cause blockage and failure. Stress analysis were done with finite element tools which are ANSYS and Autodesk INVENTOR with only the hoop, Von Mises stress and the corresponding back pressure that occurred with the scenario of 0, 10,30,50,70,90 and 100% blockage of flowlines being analyzed and taking the 0% or null blockage as the pilot case with no hydrate formation. The result gotten from both results were validated with hand calculation with excel and the initial design values for the stress values before the initial operation of the wells after the first commissioning. In addition, HAZOP was done to understand the inherent risk involved in all the cases under study and results gotten would serve as a tool of precautions to operators and stakeholders in period of adversity when facing similar scenario.

The impact of recent shipping reforms on the offshore oil and gas industry in Australia

2013 ◽  
Vol 53 (1) ◽  
pp. 203
Author(s):  
Shane Bosma
Keyword(s):  
Oil And Gas ◽  
Oil Pollution ◽  
Marine Pollution ◽  
Oil And Gas Industry ◽  
Export Market ◽  
Shipping Industry ◽  
Gas Industry ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
The Impact

This peer-reviewed paper focuses on the impact of recent shipping reforms on the offshore oil and gas industry in Australia. These reforms are: the wholesale rewrite of the Navigation Act 1912 (Cth) by the Navigation Act 2012 (Cth), and the introduction of the Marine Safety (Domestic Commercial Vessels) Act 2012 (Cth); the registration of ships in Australia and the regulation of coastal trading in Australia; and, the regulation of marine pollution in Australia. The regulatory framework for offshore oil and gas facilities, and the interaction between the maritime legislation and the Offshore Petroleum and Greenhouse Gas Storage Act 2006 (Cth)—specifically, how the legislation applies at different stages of the operation of offshore oil and gas facilities—is considered. Also considered is the Australian Government’s Stronger Shipping for a Stronger Economy shipping reform package, which aims to position the Australian shipping industry to take advantage of opportunities provided by an expanding export market. This peer-reviewed paper also considers the new offences for oil pollution from ships, the widened scope of liability to include charterers of ships for oil pollution, and the significantly increased penalties for pollution offences promulgated by the Maritime Legislation Amendment Act 2011 (Cth). The text was finalised in November 2012, and for that reason developments after this date have not been treated.

Sign in / Sign up

Export Citation Format

Share Document