Unlike conventional reservoirs, drilling and completion program for shale gas reservoirs need high technical expertise and vast experience. Drilling of shale formations poses high challenge to drilling engineers due to the presence of different clay minerals which lead to swelling of the shale formations when interaction with drilling fluid occurs. Hence, an attempt is made to develop a non-damaging drilling fluid which can drill the shale formations effectively and safely. In this work a non-damaging drilling fluid system is developed with the use of different polymers. The developed system contains xanthan gum, pre-gelatinized starch, polyanionic cellulose and calcium carbonate and it is inhibited by potassium chloride salt. An extensive experimental analysis has been carried out with these polymers in order to have optimal rheological and filtration properties. Fann viscometer model 35SA is used to perform rheological studies and Fann API filter press is used to optimize filtration properties. The experimental investigation brings out that the developed drilling fluids have favorable rheological and filtration properties and can be used to drill the shale gas reservoirs without raising any environmental issues.
Development of Non-Damaging Drilling Fluid System for Shale Gas Reservoirs
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Unlike conventional reservoirs, drilling and completion program for shale gas reservoirs need high technical expertise and vast experience. Drilling of shale formations poses high challenge to drilling engineers due to the presence of different clay minerals which lead to swelling of the shale formations when interaction with drilling fluid occurs. Hence, an attempt is made to develop a non-damaging drilling fluid which can drill the shale formations effectively and safely. In this work a non-damaging drilling fluid system is developed with the use of different polymers. The developed system contains xanthan gum, pre-gelatinized starch, polyanionic cellulose and calcium carbonate and it is inhibited by potassium chloride salt. An extensive experimental analysis has been carried out with these polymers in order to have optimal rheological and filtration properties. Fann viscometer model 35SA is used to perform rheological studies and Fann API filter press is used to optimize filtration properties. The experimental investigation brings out that the developed drilling fluids have favorable rheological and filtration properties and can be used to drill the shale gas reservoirs without raising any environmental issues.
Publication Mode |
Online |
---|---|
Publication Author |
Rajat Jain, Vikas Mahto |
Publication Language |
English |
Publication Type |
Conference Paper |
Publication Year |
2016 |
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