During 2003-2013, fatality rates for oil and gas extraction workers decreased for all causes of death except those associated with fall events, which increased 2% annually during 2003-2013 (1). To better understand risk factors for these events, CDC examined fatal fall events in the oil and gas extraction industry during 2005-2014 using data from case investigations conducted by the Occupationa...

I investigate the importance of learning in oil and gas exploration. I developed a tractable dynamic structural model of oil and gas exploration in which firms gradually learn about the productive qualities of different regions through exploratory drilling. Exploratory drilling is modelled as an information-gathering process in which each new exploratory well provides information concerning the...

Efficient and cost-effective drilling of directional wells necessitates the implementation best practices advanced techniques to optimize operations. Failure adequately consider risks can result in inefficient operations non-productive time (NPT). Although may be expensive, they offer promising technical solutions for mitigating risks. This paper aims demonstrate effectiveness improving when co...

Oil and gas offshore exploration drilling and production facilities in cold climate and Arctic environmental conditions need various design considerations and operational preparation for intended operations. Offshore winterization of drilling systems and equipment is considered to be one of the essential aspects for ensuring that a facility is capable of and suitably prepared for operations in ...

numerous parameters influence bit selection process, which considering all them is not normally feasible. existing methods use limited number of these parameters to choose a suitable bit for a specific drilling condition. one of the widely used methods is cost per foot. specific energy and drilling strength are another methods currently used for bit selection. different methods of bit selection...

In this paper we consider the problem of optimally selecting a set of k nodes in a node-weighted graph, under the requirement that the subgraph induced by the set of nodes selected is connected. This problem arises in a Norwegian oo-shore oil-drilling application. We show this problem to be NP-complete on general graphs, but provide a polynomial time algorithm to nd an optimal solution for tree...

a r t i c l e i n f o In many mining, civil, and petroleum engineering applications diamond bit drilling is widely used due to high penetration rate, core recovery and its ability to drill with less deviation. Recently, many research have been conducted to estimate the penetration rate of diamond drilling which can be considered as one of the most important parameters in project planning and co...

In the oil industry, the measurement-while-drilling (MWD) systems are usually used to provide the real-time position and orientation of the bottom hole assembly (BHA) during drilling. However, the present MWD systems based on magnetic surveying technology can barely ensure good performance because of magnetic interference phenomena. In this paper, a MWD surveying system based on a fiber optic g...

We propose JackVR, an interactive immersive simulation prototype aiming to train domain experts to land jackup oil rigs. Jackup rigs are among the most common offshore drilling units for extracting oil, but the process of landing the rigs is mostly challenging because of the unpredictable sea and weather conditions, lack of clear vision, and the possible risk of damaging the ocean floor. We des...