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Proceedings Papers

Paper presented at the ASSE Professional Development Conference and Exposition, June 19–22, 2017
Paper Number: ASSE-17-656
... of particulates, and any event which causes structural damage can increase the concentrations of asbestos or particulates from other building materials in the air being breathed by building occupants. Even a simple electrical power outage can render HVAC systems all but useless for several days, creating perfect...
Proceedings Papers

Paper presented at the SPE EOR Conference at Oil and Gas West Asia, April 16–18, 2012
Paper Number: SPE-153997-MS
... naturally fractured reservoirs (NFR). Once it is controlled by a proper injection scheme and the consumption of air injected through efficient diffusion into the matrix, low temperature air injection (LTAI) can be an alternative technique for heavy-oil recovery from deep NFRs. Limited studies on light oils...
Proceedings Papers

Paper presented at the Fall Meeting of the Society of Petroleum Engineers of AIME, October 5–8, 1958
Paper Number: SPE-1099-G
... WATER CAN BE CONTROLLED IN AIR AND GAS DRILLING By Wayne F. Hower, Charles McLaughlin, Joe Ramos, Members AIME and John Land Halliburton Oil Well Cementing Co., Duncan, Okla. Publication Rights Reserved This paper is to be presented at the 33rd Annual Fall Meeting of the Society of Petroleum Engineers...
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Fissures <b>can</b> act as both inlets for <b>air</b> and outlets for exhaust gases. Fiss...
Published: 19 September 2010
Figure 9 Fissures can act as both inlets for air and outlets for exhaust gases. Fissures that once acted as vents for exhaust gases can become air intakes once the combustion zone advances. More
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-726
... interventions frequently alter the littoral dynamics governed by natural factors. Several factors limit the adaptability of the coastal system and amplify the risk of erosion and flooding of the land. Among them, the following ones can be mentioned: the urbanization and the intensive use of the territory...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2009
Paper Number: OTC-19899-MS
... of the riser assembly. The paper describes the technical developments, key features of the riser system, and the qualification programmes that have been performed to validate the robustness of this concept and design, namely: Finite element analysis assuming constant hydrodynamic properties of the air cans...
Proceedings Papers

Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-322
... risers in close proximity to each other within a guide frame. To examine the interaction between closely spaced large diameter cylinders, such as air cans, 2H Offshore and Subsea7 have undertaken a study using both computational fluid dynamics (CFD) analysis and a model testing campaign. INTRODUCTION...
Proceedings Papers

Paper presented at the ASSE Professional Development Conference and Exposition, June 7–10, 2004
Paper Number: ASSE-04-724-1
... affecting building occupants. While the focus is on indoor, not outdoor air quality, it should be understood that outdoor air can affect indoor air quality (IAQ), especially when there is something bad in it. Moreover, the lack of outdoor air, or fresh air, can also affect IAQ. Another source of bad air...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2003
Paper Number: OTC-15385-MS
... Abstract The development of dry-tree vessel technology and the installation of several Spar systems in increasingly deep water in the Gulf of Mexico has led to the parallel evolution of several designs of dry-tree risers, most of which rely on air cans to provide top tension. These risers...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 1983
Paper Number: OTC-4563-MS
...). This design uses a partially buoyant riser, which obtains its buoyancy from open-bottom steel cans of different sizes. The water level in the air cans can be varied between two levels: one reflecting a vented condition and one reflecting a fully aired condition depending on the operating conditions. Lockheed...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2001
Paper Number: OTC-13110-MS
... and the results from the analysis software show reasonable agreement, and highlight major areas of response sensitivity. Important lessons from this work relate to the significance of hull motion on the riser response and the sensitivity of response to the width of the gap between air cans and hull guides...
Proceedings Papers

Paper presented at the The Fourteenth ISOPE Pacific/Asia Offshore Mechanics Symposium, November 22–25, 2020
Paper Number: ISOPE-P-20-110
... wall are recorded by the high-speed camera. Furthermore, the impact pressure and the wall deformation during slamming are measured. The results show that the presence of entrapped air can change the impact mode. Furthermore, the impact pressure and wall deformation induced by liquid slamming decreases...
Proceedings Papers

Paper presented at the The Thirteenth International Offshore and Polar Engineering Conference, May 25–30, 2003
Paper Number: ISOPE-I-03-289
... over 1500 m water depth, the top riser part is composed of several air cans, with a typical length of 12.5 m and diameters reaching from 2 to 3.5 m . These buoys are connected to each other and to the riser string, therefore creating a rigid air can assembly as illustrated in Fig. 1(a). Several...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, December 4–6, 2007
Paper Number: IPTC-11754-MS
... can create an unstable atmosphere resulting in rising air, forming clouds and bringing rainfall to areas heavily concentrated with soot. The rising air is often balanced by an increase in sinking air in neighbouring regions, which tends to prevent cloud formation and rainfall. An example...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 1983
Paper Number: OTC-4596-MS
... to predict operational limits for a typical 6000 foot riser with air can buoyancy modules. The effects of venting the air can buoyancy modules on storm survivability of the riser are evaluated for the 6000 foot riser as one method of increasing storm survivability of long disconnected risers. INTRODUCTION...
Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, January 29–31, 2018
Paper Number: SPE-189388-MS
... of the fluid column in the well. The use of air drilling can also enable better control of the equivalent circulation density (ECD) in closed UBD systems, for managed pressure drilling applications. Proper planning and execution of UBD techniques can achieve the following objectives: Reduce formation...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 17–19, 2009
Paper Number: SPE-119387-MS
.... The first field trial showed that adequate pressure can be easily maintained while mixing air and liquid so that the drilling rig mud pumps can perform efficiently. The first field trial also showed that very small amounts of air volume are required to reduce the equivalent density of the fluid. The high...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-587
.... Air lubrication method is one of the mature technologies for commercialization to reduce the frictional resistance. Drag reduction using air can be categorized by bubble drag reduction (BDR) and air layer drag reduction (ALDR). In BDR, small bubbles are injected into the boundary layer. The dispersed...
Proceedings Papers

Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium and Western Regional Meeting, March 16–18, 2004
Paper Number: SPE-86954-MS
... technologies via cogeneration of nitrogen and rich air for use in adjacent reservoirs. Rich air (30% to 40% oxygen) can be an alternative to carbon dioxide injection just as air injection is generally practiced where carbon dioxide is not available. Rich air is the byproduct of nitrogen generation and has...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology, September 7–9, 1998
Paper Number: SPE-47828-MS
... at about 100m below sea level. This system can be installed on existing drilling vessels with a 49-1/2 rotary table, and typical operational procedures and tensioner capabilities can be used. Additional equipment required is the near surface riser connector and the additional air cans to be mounted...

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