نتایج جستجو برای: oil based drilling

تعداد نتایج: 3060191  

2009
Samad Valipour Shokouhi Agnar Aamodt Pål Skalle Frode Sørmo

Oil well drilling is a complex process which frequently leads to operational problems. In order to deal with some of these problems, knowledge intensive case based reasoning (KiCBR) has clearly shown potential. An important problem in drilling is hole cleaning, in which a high number of observed parameters and other features are involved. This paper presents how to determine the root causes of ...

2009
Zuguang Li

Correctly choosing rock-breaking bit is critical in oil drilling. The optimal model of selecting a bit has been established based on the Factor Analysis Theory. Through selecting primitive variables, and using SPSS (Statistical Package for the Social Sciences) to get factor loading matrix, factor rotation and factor score, we have reasonably evaluated and optimized the selection of rock-breakin...

2009
Andrew McGregor Krzysztof Onak Rina Panigrahy

Given n potential oil locations, where each has oil at a certain depth, we seek good trade-offs between the number of oil sources found and the total amount of drilling performed. The cost of exploring a location is proportional to the depth to which it is drilled. The algorithm has no clue about the depths of the oil sources at the different locations or even if there are any. Abstraction of t...

Journal: :Marine pollution bulletin 2010
Patrick D O'Hara Lora A Morandin

Operational discharges of hydrocarbons from maritime activities can have major cumulative impacts on marine ecosystems. Small quantities of oil (i.e., 10 ml) results in often lethally reduced thermoregulation in seabirds. Thin sheens of oil and drilling fluids form around offshore petroleum production structures from currently permissible operational discharges of hydrocarbons. Methodology was ...

2015
Russell W. Mills Christopher J. Koliba

A puzzle that faces public administrators within regulatory governance networks is how to balance the need for democratic accountability while increasingly facing demands from elected officials to optimize oversight of industry by utilizing the expertise of the private sector in developing risk-based standards for compliance. The shift from traditional command and control oversight to process o...

Journal: :EURASIP J. Adv. Sig. Proc. 2011
Qingjie Zhao Baojun Zhang Wei Wang

The data measured by well bottom sensors can be transmitted to the surface through the drilling mud during oil drilling operations. This article introduces a data processing scheme for a wireless data transmission application via mud. The detailed signal processing procedure is given, and several data processing techniques used are discussed, mainly including data encoding and signal integratin...

ژورنال: ژئوفیزیک ایران 2018

The time for easy oil discovery and production for National Iranian Oil Company (NIOC) is over. This means that the oil is no longer discovered in structurally simple, i.e., almost flat environments like south of Khuzestan province (south west of Iran). This comes along with the fact that Iran’s biggest oil reservoirs are in this area, and they are passing half of their life cycle. These giant ...

2007
RYAN KELLOGG

This article examines learning-by-doing that is specific not just to individual firms but to pairs of firms working together in a contracting relationship. Using data from the oil and gas industry, I find that the productivity of an oil production company and its drilling contractor increases with their joint experience. This learning is relationship-specific: drilling rigs cannot fully appropr...

Journal: :Eng. Appl. of AI 2013
Pål Skalle Agnar Aamodt Odd Erik Gundersen

The oil well drilling process is the selected representative of a challenging industrial process. The drilling process is becoming more complex as oil fields mature and technology evolves. At the same time, the amount of information is increasing in volume and frequency. Although technology is advancing, failures occur at almost the same rate as before, leading to loss of valuable time. Wheneve...

2013
Pål Skalle Agnar Aamodt Karin Laumann

This paper presents how to model technical and human errors and how the two error types are integrated in one common model. Human errors were modeled as an integral part of the organization’s ability to handle failures, while technical errors were embedded as an integral part of the oil well drilling operation. To reduce the number of offshore accidents there is a continuous focus on safety imp...

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