Very First Application of Nitrified Stiff Foam along with the Near-Balanced Drilling Technology to Mitigate the NPT Associated with Highly Fractured, Low Pressure Hydrocarbon Bearing Sui Main Limestone Formation in Pakistan - A Case History

2015 ◽  
Author(s):  
Qasim Ashraf ◽  
Muhammad Hussain ◽  
Mohamed Khair Nusair ◽  
Khurram Luqman
Keyword(s):  
Case History ◽  
Low Pressure ◽  
Drilling Technology

Hydrogen Damage in a 1250-Psi Boiler

1964 ◽  
Vol 86 (3) ◽  
pp. 341-343 ◽  
Author(s):  
E. E. Galloway
Keyword(s):  
Case History ◽  
Chemical Treatment ◽  
Low Pressure ◽  
Hydrogen Damage ◽  
Boiler Operation ◽  
History Of

This paper covers the case history of hydrogen damage in a relatively low-pressure boiler (1250 psi). Two failures are discussed, as well as the pertinent facts concerning boiler operation, chemical treatment, and cleaning.

Microseisms in New England—Case History II*

1948 ◽  
Vol 38 (3) ◽  
pp. 173-178
Author(s):  
L. Don Leet
Keyword(s):  
Surface Layer ◽  
Nova Scotia ◽  
Pressure Gradient ◽  
New England ◽  
Case History ◽  
Rayleigh Waves ◽  
Cold Front ◽  
Low Pressure ◽  
Storm Center ◽  
Set Up

Abstract Rayleigh waves recorded on the three components of the Harvard station are used to determine the direction of approach of microseisms. In Case History I, it was observed that microseisms did not radiate exclusively from the center of a well-developed low-pressure storm area and that they remained strong and continued for many hours after the storm center moved inland over Nova Scotia, northeast of the Harvard station, coming at that time from east, southeast, and south. In Case History II, a short but distinct microseismic storm ran its course as a cold front advanced to the coast and out over the ocean, but there was no atmospheric storm system within the region covered by the U. S. Weather Map. It is proposed that microseisms are generated when a pressure gradient of magnitude as yet undefined moves over the crust and, in effect, kneads the surface layer in such a way as to set up vibrations.

Use of the Near-Balance Drilling Technology Enables an Operator to Drill Successfully the Deepest Exploratory Well in Pakistan: Case History

2011 ◽  
Author(s):  
Francesco Crea ◽  
Asad Mehmood ◽  
Keith Moyse ◽  
Sherif Saber ◽  
Fabian Toress ◽  
...  
Keyword(s):  
Case History ◽  
Drilling Technology

Application Research on Low-Pressure Pulse and Cavitation Jet Compound Drilling Technology

2011 ◽  
Vol 137 ◽  
pp. 205-209 ◽  
Author(s):  
Wen Fei Li ◽  
Guang Lei Wang
Keyword(s):  
Pressure Pulse ◽  
Breaking Strength ◽  
Low Pressure ◽  
Rock Breaking ◽  
Strength Increase ◽  
Application Research ◽  
Hydraulic Power ◽  
Well Drilling ◽  
Deep Well ◽  
Drilling Technology

In the low-pressure pulse and cavitation jet compound drilling technology, pulse low-pressure and cavitation jet generator is installed on bit, water jet modulated by generator can generate pulse low-pressure, which will alternate rock mechanics, decrease rock breaking strength, increase rock-breaking efficiency. And cavitation jet generated can increase hydraulic power downhole. The results show that low-pressure pulse and cavitation jet generator has been run well from 5349m to 6162m for 129.36h-136.63h in TK1090 well, increasing drilling speed 40.6%～85.1%. The low-pressure pulse and cavitation jet compound drilling technology can increase drill speed and be deployment in deep well drilling.

Borehole Stability and Field Stress Analysis with Azimuthal Logging-while-Drilling Technology: A Case History

2015 ◽  
Author(s):  
Shaikh Abdul Azim ◽  
Sankar Chowdhuri ◽  
Mohammad Raffi Madar Sahib ◽  
Tarek Abdel Gawwad Mohammad ◽  
Anar Abdulkarim ◽  
...  
Keyword(s):  
Stress Analysis ◽  
Case History ◽  
Borehole Stability ◽  
Field Stress ◽  
Drilling Technology ◽  
Logging While Drilling
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