Drilling Rigs: Oil and Gas Rig Ergonomic Program Design

2014 ◽  
pp. 406-414
Author(s):  
David O. Anderson ◽  
Angelo Pinheiro
Keyword(s):  
Program Design ◽  
Oil And Gas ◽  
Drilling Rigs ◽  
Ergonomic Program

Step Change Transformation of Legacy Rigs to Autonomous Drilling Rigs

2021 ◽  
Author(s):  
Sergey Ziatdinov ◽  
Titto Thomas Philip
Keyword(s):  
Capital Investment ◽  
Business Performance ◽  
High Performance ◽  
Human Error ◽  
Oil And Gas ◽  
Business Environment ◽  
The Past ◽  
Automation Systems ◽  
Negative Effect ◽  
Drilling Rigs

Abstract During the past decade, drilling automation systems have been an attractive target for a lot of operating and drilling companies. Despite progress in automation in various industries, like mining and downstream, the drilling industry has lagged far behind in the real application of autonomous technologies implementation. This can be attributed to harsh environment, high level of uncertainty in input data, and that majority of stock is legacy drilling rigs, resulting in capital intensive implementations. In the past years there have been several attempts to create fully automated rigs, that includes surface automation and drilling automation. Such solutions are very attractive, because they allow people to move out of hazardous zones and, at the same time, improve performance. However, the main deficiency of such an approach is the very high capital investment required for development of highly bespoke rigs (Slagmulder 2016). And in the current business environment, with high volatility in oil and gas prices, plus the huge negative effect of the Covid-19 crisis on the world's economic situation, it would be hard to imagine that there are a lot of companies willing to make such a risky investment. In addition to this, due to the lack of demand, the market is full of relatively new, high-performance rigs. Taking all these into account, the obvious question is whether it makes sense to invest money and time into the development of drilling automation. The answer should be yes, for three substantial reasons:Automation improves personal safety, by moving people out of danger zones;Automation improves process safety, by transferring execution from person to machine, which reduces the risk of human error;Automation improves efficiency by bringing consistency to drilling and through the use of self-learning algorithms, which allow machines to drill each successive well better than the previous. This paper will not look into surface automation, such as pipe-handling, chemical and mud handling on site. The paper is focused on the subsurface, namely on the drilling automation process, the challenges that need to be overcome to deploy a vendor agnostic system on a majority of existing rigs. A vendor agnostic system is a modification of an operator's autonomous drilling system (Rassenfoss 2011), designed to use existing rigs, BHAs, and have minimum footprint on the rigs for operational use. A vendor agnostic system will increase adoption of automated technologies and further drive improvements in operational and business performance

Retrofitting Offshore Drilling Rigs with Islanded DC Grids and Energy Storage

2021 ◽  
Author(s):  
Stig Settemsdal ◽  
Saverio Ventrelli
Keyword(s):  
Energy Storage ◽  
Power Plant ◽  
Power Plants ◽  
Oil And Gas ◽  
Dynamic Performance ◽  
Wind Farms ◽  
Power Grids ◽  
Offshore Drilling ◽  
Drilling Rig ◽  
Drilling Rigs

Abstract The paper presents a novel approach for modernizing/retrofitting offshore drilling rig power plants with islanded direct current (DC) power grids and energy storage. The concept has been successfully applied on several offshore rigs which are in operation today and is applicable to jack-ups, semi-submersibles, drill ships, as well as other types of marine support vessels for oil and gas platforms and wind farms. The approach aims to enhance the feasibility of leveraging energy storage solutions on offshore drilling rigs and marine vessels by making use of the existing power plant footprint. Unique measures have also been incorporated into the electrical system architecture to ensure that the reliability and safety of the existing alternating current (AC)-based system are not compromised. This enables operators to capitalize on the numerous benefits of energy storage (e.g., reduced emissions, enhanced dynamic performance for drilling and dynamic positioning, etc.) without having to perform a "rip and replace" of the entire power plant and electrical infrastructure.

Development of semi-submersible production vessels and its application to Australian waters

2008 ◽  
Vol 48 (1) ◽  
pp. 241
Author(s):  
Hilde Engelsen ◽  
Henrik Hannus
Keyword(s):  
North Sea ◽  
Environmental Conditions ◽  
Oil And Gas ◽  
Gas Production ◽  
Oil And Gas Production ◽  
The North ◽  
Hull Design ◽  
Steel Catenary Risers ◽  
Drilling Rigs ◽  
In The Beginning

Semi-submersible platforms have a long history in the North Sea. In the beginning they were used mainly as mobile offshore drilling units, but in the last two decades the permanently moored semi-submersible production vessels have become widely used both as gas processing units and combination oil and gas production vessels. The design of production semi-submersibles evolved from that of drilling rigs, but there have since been significant improvements to the design of the hull and the topside configuration in relation to operational requirements and construction processes. The design methods have also been successfully adapted to areas with different environmental conditions, in combination with steel catenary risers and polyester mooring systems. On recent designs, simplifications of the hull systems are being implemented, which ease operation and enhance the passive safety. Finally, the semi-submersible production vessel’s application to Australian waters is discussed with focus on topside layout, hull design and mooring system design. Environmental conditions offshore northwest Australia are compared to North Sea and Gulf of Mexico conditions, along with vessel class and regulatory requirements.

scholarly journals Telemetry Tracking During Directional Drilling

2021 ◽  
pp. 127-138
Keyword(s):  
Oil And Gas ◽  
Environmental Safety ◽  
Gas Production ◽  
Main Task ◽  
Directional Drilling ◽  
Oil And Gas Production ◽  
Construction Methods ◽  
Accuracy Of Measurements ◽  
Intensity Of Development ◽  
Drilling Rigs

The article discusses the main features of the organization of telemetry in directional drilling. The constant increase in the complexity of the conditions for the development and operation of fields, oil and gas production, an increase in the intensity of development of already explored fields due to horizontal and cluster drilling required a significant increase in the requirements for the accuracy of diagnostics and active control of the spatial position of the field. In general, the accuracy of measurements and the efficiency of their processing largely determine the cost of well construction. Directional drilling is one of the well construction methods. The most effective directional drilling application is the development of fields located in water areas, in swampy or rugged terrain, where the construction of drilling rigs may violate the requirements for environmental protection and environmental safety. Directional drilling is also widely used in the creation of relief wells for killing blowouts, for forming multilateral wells or deviating the lower part of the well along the productive horizon in order to increase drainage. Well profiles may vary, but the top of the deviated wellbore must be vertical, followed by a deviation of the calculated azimuth. Therefore, the main task of the telemetry system in directional drilling is to constantly monitor the planned trajectory, as well as to maintain the bit trajectory within the corridor that runs inside the open formation.

REVIEW OF AUSTRALIAN PETROLEUM EXPLORATION, 1967

1968 ◽  
Vol 8 (1) ◽  
pp. 8
Author(s):  
R. C. Sprigg
Keyword(s):  
Natural Gas ◽  
Western Europe ◽  
Oil And Gas ◽  
Petroleum Exploration ◽  
Search Pattern ◽  
Significant Feature ◽  
Field Development ◽  
Development Costs ◽  
Drilling Rigs ◽  
Gippsland Basin

In Australia, 1967 can aptly be termed the year of the impending energy revolution. The long-awaited upturn in the rate of oil and gas discovery eventuated and was successfully associated with a decided swing to concentration of effort on the continental shelf.Natural gas has dominated the discovery scene to such an extent that if experience in Western Europe is taken as a guide line, natural gas can be expected to supply 20 per cent of the local energy market within the next decade. This is expected to be accomplished primarily at the expense of oil, to a lesser extent of black coal and finally of brown coal. Natural gas will erode only the growth rate of these latter fuels.Natural gas will arrive in about March, 1969, at Melbourne, Brisbane, and Adelaide from the Barracouta, Roma and Gidgealpa-Moomba fields respectively. Gas reserves at Gilmore, Mereenie and Dongara remained undeveloped due principally to market difficulties. Recently a discovery has been made in the Gulf of Papua.Crude oil production from the Moonie-Alton fields increased to more than 8,750 b.p.d. during the year, and deliveries commenced from Barrow Island with production rising to 25,000 b.p.d. by the end of the year. The Marlin, Kingfish and Halibut fields in Bass Strait are expected to be in production by mid-1969.The heavy swing of exploration interest to the continental shelf was probably the most significant feature in the year's search pattern. The remarkable rate of success in the offshore Gippsland Basin was the major factor, but the Barrow-Pasco Island success strengthened this trend. The availability for the first time in Australia of a number of offshore drilling rigs, supported by greatly improved techniques in marine exploration, led to the explosion of interest in this exciting sphere. Despite this, exploration and development costs are considerably less on land, and many major basins remain very poorly explored. Important discoveries in onshore basins must be expected in the future.The passage of new offshore legislation will markedly influence future patterns of exploration. The extent to which this will result in diversification of exploration interest remains to be seen.Oil well statistics on footage drilled indicate an increase of about 43 per cent over the 1966 total, bringing the total footage figure to just over one million feet. Closer examination of these figures, however, discloses a disquieting drop in new exploration footage at the expense of field development wells. Moreover, offshore wells are being drilled to greater total depths. Of 274 wells drilled in 1967, 187 were developmental and 87 exploratory. This compares with 134 wells in 1966 of which 97 were exploratory.In conclusion it would appear that the events of 1967 have pointed to Australia becoming self-sufficient in oil by the mid-1970s, providing present discovery rates are maintained. By that time natural gas is expected to be supplying 20 per cent of the total energy requirements. All of which highlights the probability that 1968 will see the Federal Government looking far more closely at the long-term pricing of Australian crude and the eventual review of incentive formulas.

RESULTS OF INTERPRETATION OF SEISMIC SECTIONS DURING ENGINEERING SURVEYS WITHIN OF THE SOUTH-KIRINSKOYE OIL AND GAS CONDENSATE FIELD (SHELF OF SAKHALIN ISLAND)

2019 ◽  
Vol 12 (9-10) ◽  
pp. 64-73
Author(s):  
V. K. Leksin ◽  
V. I. Samarin ◽  
P. N. Liskovyi
Keyword(s):  
Oil And Gas ◽  
Gas Condensate ◽  
Geological Hazards ◽  
The South ◽  
Optimal Method ◽  
Marine Research ◽  
Near Surface ◽  
Reflected Waves ◽  
Seismic Sections ◽  
Drilling Rigs

High-resolution 2D seismic is the main and optimal method in marine engineering geophysics, which for many years has worked well for the production of semi-submersible drilling rigs, self-lifting drilling rigs, construction of berthing facilities and bridges. The main objective of this method is to identify near-surface gas, faults, which are geological hazards. The method used for performing marine research is longitudinal profiling of reflected waves with a 48-fold overlap of the reflecting horizons. To obtain high-quality seismic migrated sections, we have previously developed a unified data processing algorithm for the offshore areas of the South-Kirinskoye oil and gas condensate field (Sakhalin shelf). More than 8,000 line km of seismic data were processed. The article presents the sequence of interpretation, as well as an analysis of the presence of hazards in the project wells (objects). To isolate potentially dangerous objects for each horizon, a dynamic analysis was carried out, which included the definition of the following parameters: maximum and minimum peak amplitude. The systematization and classification of amplitude anomalies was carried out according to such features as a phase change, frequency reduction, the presence of a supply channel and distortion (false deflection) of all underlying boundaries, indicating the possible presence of gas. The probable hazard levels for drilling operations were determined. All the identified anomalies in the process of interpreting seismic sections were mapped to the geological hazards to select the optimal and safe installation point for drilling a prospecting or exploration well.

scholarly journals Does the Hashrate Affect the Bitcoin Price?

2020 ◽  
Vol 13 (11) ◽  
pp. 263
Author(s):  
Dean Fantazzini ◽  
Nikita Kolodin
Keyword(s):  
Energy Efficiency ◽  
Structural Breaks ◽  
Oil And Gas ◽  
Energy Economics ◽  
Production Model ◽  
Mining Equipment ◽  
Drilling Rigs ◽  
The Impact ◽  
The Relationship ◽  
Cointegration Relationship

This paper investigates the relationship between the bitcoin price and the hashrate by disentangling the effects of the energy efficiency of the bitcoin mining equipment, bitcoin halving, and of structural breaks on the price dynamics. For this purpose, we propose a methodology based on exponential smoothing to model the dynamics of the Bitcoin network energy efficiency. We consider either directly the hashrate or the bitcoin cost-of-production model (CPM) as a proxy for the hashrate, to take any nonlinearity into account. In the first examined subsample (01/08/2016–04/12/2017), the hashrate and the CPMs were never significant, while a significant cointegration relationship was found in the second subsample (11/12/2017–24/02/2020). The empirical evidence shows that it is better to consider the hashrate directly rather than its proxy represented by the CPM when modeling its relationship with the bitcoin price. Moreover, the causality is always unidirectional going from the bitcoin price to the hashrate (or its proxies), with lags ranging from one week up to six weeks later. These findings are consistent with a large literature in energy economics, which showed that oil and gas returns affect the purchase of the drilling rigs with a delay of up to three months, whereas the impact of changes in the rig count on oil and gas returns is limited or not significant.

Optimization of perforation drilling for mitigating punch-through in multi-layered clays

2011 ◽  
Vol 48 (11) ◽  
pp. 1658-1673 ◽  
Author(s):  
M.S. Hossain ◽  
M.J. Cassidy ◽  
R. Baker ◽  
M.F. Randolph
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Soil Conditions ◽  
Gas Industry ◽  
Frequent Use ◽  
Layered Clays ◽  
Industry Practice ◽  
Offshore Oil And Gas ◽  
Drilling Rigs ◽  
Offshore Oil

“Spudcan” foundations for mobile drilling rigs continue to exhibit a high failure rate in the offshore oil and gas industry. The more frequent use of larger jack-ups in highly stratified regions, such as the Sunda Shelf in Southeast Asia, contributes to this concerning increase in “punch-through” incidents, which can lead to buckling of a leg or even toppling of the rig. An industry practice known as “perforation drilling” is sometimes used to mitigate the punch-through risk in layered clays, extracting soil from the upper strong layer before the jack-up is installed. This paper reports results from centrifuge model tests exploring the efficiency of perforation drilling. The soil conditions tested simulate offshore strength profiles that have reported punch-through failures. An experimental method for “drilling” sites in an enhanced gravity centrifuge environment was developed and the installation responses of model spudcan foundations penetrating through multi-layered clays with interbedded stiff layers were recorded. The experimental results show that the removal of soil inside the spudcan perimeter, with an area of 9% perforated, eliminated rapid leg run and severe punch-through on the two- and four-layer seabed profiles tested. This confirms the effectiveness of perforation drilling and indicates how the offshore drilling plan may be optimized.

scholarly journals Storm Warning

2006 ◽  
Vol 128 (06) ◽  
pp. 24-29 ◽  
Author(s):  
Alan S. Brown
Keyword(s):  
Oil And Gas ◽  
Initial Step ◽  
American Petroleum Institute ◽  
Entire System ◽  
Oil Drilling ◽  
Air Gaps ◽  
Oil And Gas Pipelines ◽  
Single Solution ◽  
Drilling Rigs ◽  
Demand Changes

This article focuses on measures for preventing damages to oil drilling setups post hurricanes or typhoons. According to engineers, today, it is a complex network of fixed and floating production platforms, mobile drilling units, undersea wells, and oil and gas pipelines. No single solution will ensure the safety of the entire system. The exploration wells under the drilling rigs are also vulnerable. Mobile drilling units, such as jackups and semisubmersibles, which drill test wells and then move to another location, proved especially vulnerable during Katrina and Rita. When the American Petroleum Institute rolled out its first post-Katrina recommendations in April, it took an initial step on a road that will eventually demand changes in everything from air gaps, tie-downs, and deck design to moorings, tethers, clamps, and piping supports. New standards are expected to improve the odds for newer platforms and rigs if they continue to face larger and larger hurricanes.

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