Subsea Mudlift Drilling: Planning and Preparation for the First Subsea Field Test of a Full-Scale Dual Gradient Drilling System at Green Canyon 136, Gulf of Mexico

Author(s):  
J.P. Schumacher ◽  
J.D. Dowell ◽  
L.R. Ribbeck ◽  
J.C. Eggemeyer
2002 ◽  
Vol 17 (04) ◽  
pp. 194-199 ◽  
Author(s):  
J.P. Schumacher ◽  
J.D. Dowell ◽  
L.R. Ribbeck ◽  
J.C. Eggemeyer

Author(s):  
John Shelton ◽  
John Rogers Smith ◽  
Anuj Gupta

A dual gradient, deepwater drilling system based on dilution of riser mud requires economically separating the riser mud into a low density dilution fluid and a higher density drilling fluid. This study investigated the practicality of accomplishing this separation using hydrocyclones and centrifuges and examined the possible benefits and efficiency of each. The separation experiments were conducted using a laboratory centrifuge and 2 inch hydrocyclones. The laboratory centrifuge was able to separate the riser mud into near ideal densities for dilution and drilling fluid. However, the dense slurry retained in the centrifuge had lower emulsion stability than the feed stream. The hydrocyclones achieved much less contrast in density between the low and high density discharges, but consistently resulted in a beneficial increase in the stability of the mud emulsion in all of the flow streams and had more desirable rheological properties. A qualitative comparison indicates that the hydrocyclone separation system may offer a feasible and desirable alternative to centrifuge separation system.


Author(s):  
Thomas Stoxreiter ◽  
Gary Portwood ◽  
Laurent Gerbaud ◽  
Olivier Seibel ◽  
Stefan Essl ◽  
...  

2020 ◽  
Vol 172 ◽  
pp. 01001
Author(s):  
Carsten Rode ◽  
Naja Kastrup Friis ◽  
Christian Pedersen ◽  
Nickolaj Feldt Jensen

The paper introduces prototypes of a new composite insulation product for interior application. The product consists of a standard mineral fibre insulation batt, which is wrapped in a combination of a thin fabric of moisture absorbing, capillary active material and vapour retarding membranes. The insulation composite has been tested with small samples in a laboratory setup and in an outdoor field test on a full-scale brick wall, and has so far shown promising results in comparison with other products. The paper describes the new insulation composite and the initial moisture tests that have been made with its constituents as well as results from the laboratory and field tests of its ability to prevent moisture accumulation.


2017 ◽  
Vol 854 ◽  
pp. 012013 ◽  
Author(s):  
Paul Fleming ◽  
Jennifer Annoni ◽  
Andrew Scholbrock ◽  
Eliot Quon ◽  
Scott Dana ◽  
...  
Keyword(s):  

1987 ◽  
Vol 109 (3) ◽  
pp. 257-262 ◽  
Author(s):  
J. B. Burnham ◽  
M. H. Giuliani ◽  
D. J. Moeller

This paper describes the first full-scale field test of a steam injection system for a natural-gas-fired G.E. LM5000 gas generator for the purpose of: (a) decreased exhaust emissions, (b) increased power output, and (c) improved efficiency. It discusses the steam supply system, engine features, test results, and plant economics for steam injection into the combustor and compressor discharge sections of the LM5000 at rates up to 65,000 lb/hr (29,510 kg/hr).


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