نتایج جستجو برای: mud pit

تعداد نتایج: 15482  

Journal: :Applied and environmental microbiology 2014
Yong Tao Jiabao Li Junpeng Rui Zhancheng Xu Yan Zhou Xiaohong Hu Xiang Wang Menghua Liu Daping Li Xiangzhen Li

Chinese strong-flavored liquor (CSFL) accounts for more than 70% of all Chinese liquor production. Microbes in pit mud play key roles in the fermentation cellar for the CSFL production. However, microbial diversity, community structure, and cellar-age-related changes in pit mud are poorly understood. Here, we investigated the prokaryotic community structure and diversity in pit-mud samples with...

2017
Bekir Sami Yilbas Ghassan Hassan Haider Ali Nasser Al-Aqeeli

Environmental dusts settle on surfaces and influence the performance of concentrated solar energy harvesting devices, such as aluminum troughs. The characteristics of environmental dust and the effects of mud formed from the dust particles as a result of water condensing in humid air conditions on an aluminum wafer surface are examined. The dissolution of alkaline and alkaline earth compounds i...

2014
Ming-Yi Guo Dan-Qun Huo Rohit Ghai Francisco Rodriguez-Valera Cai-Hong Shen Niang Zhang Su-Yi Zhang Chang-Jun Hou

The complex microbiota of pit mud of solid-state fermentation reactors used for the production of Chinese liquor is responsible for producing one of the oldest distillates in the world. We apply a deep-sequencing approach to characterize the microbiota from pits that have been in use for up to 440 years.

2013

Traditional methods for the disposal of Oil-Based Mud (OBM) drill cuttings have included pit burial or leaving the untreated cuttings scattered in-situ. Increasingly stringent regulations and increased environmental awareness have required new and improved disposal techniques. Scomi Equipment Inc, with over twenty one years Drilling Waste Management experience, has developed a system to remedia...

2005
Rogério Martins Tavares José Ricardo Pelaquim Mendes Celso Kazuyuki Morooka João Carlos Ribeiro Plácido

During the petroleum well drilling operation many mechanical and hydraulic parameters are observed by an instrumentation system installed in the rig named mud-logging system. The mud-logging system is composed by several sensors distributed in the rig; these sensors measure different operation parameters like: hook load, column rotation, mud pit level, pumping pressure, etc. The mudlogging syst...

Background: Petroleum drilling and exploration operations generate a significant amount of oily wastes. Comparing with physical and chemical remediation methods, bioremediation is cost-effective, highly efficient, and environment-friendly technology.Objectives: The aim of this study was to evaluate biological treatment efficiency for an oil-contaminated s...

2002
I. A. FRIGAARD N. L. HUMPHRIES I. M. REZMER - COOPER J. P. JAMES

Good agreement with field data has been obtained when using a commercial kick simulator to analyse a 56 bbl gas kick taken in a 59 deg deviated wellbore. Fast kick detection and reaction are necessary when drilling at high rates of penetration since high pump rates, necessary for hole cleaning and cuttings transport, imply that a gas influx may be rapidly circulated to surface. A simulated exam...

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