The article shows the importance of obtaining new composition heavy drilling fluids based on composite chemical reagents from local raw materials and industrial wastes for oil gas wells. In process building wells to maintain stability walls, prevent flow salts, penetration formation into well, it becomes necessary increase density fluid, which can be accomplished by introducing components with ...

Advances in drilling technologies and production strategies such as horizontal drilling and hydraulic fracturing have significantly improved the production of natural gas by stimulating fluid flow from wells. Since 2008, these technological developments have spurred exponential growth of gas well drilling across the U.S. While the new drilling for shale gas and hydraulic fracturing technologies...

Rheology is one of the key drilling fluid properties for controlling sag. Yet, the current understanding of the sag-rheology relationship is limited to a few general guidelines for reducing sag in the field. This paper reviews current understanding of sag and describes the initial stage of work aimed at finding a correlation between fluid rheology and sag performance under laboratory conditions...

Clay slurries are both ubiquitous and essential in the oil exploration industry, most commonly employed as drilling fluids. Due to its natural abundance, bentonite clay is often the...

Wellbore stability evaluation is one of the important applications rock mechanics and should be regarded to prevent instabilities that may develop in wells for various reasons (such as complex field conditions, interaction between drilling fluid, directional etc.). The saturation rocks by fluids causes significant changes on mechanical properties rocks. However level these variations changed du...