Technology for drilling waste dehydration using textile decanter

UDK: 502.6:622.24
DOI: 10.24887/0028-2448-2020-5-101-104
Key words: drilling waste, utilization, dehydration, geotube, geomembrane, geotextile, soft filter containers, textile decanter
Authors: E.A. Mazlova (Gubkin University, RF, Moscow), I.G. Baryshev (IVER Ltd., RF, Moscow), R.D. Kataki (IVER Ltd., RF, Moscow), V.G. Semenychev (IVER Ltd., RF, Moscow), O.A. Kulikova (Gubkin University, RF, Moscow)

Environmental and technological requirements to the processes of efficient drilling waste disposal system exclude the possibility of pollutants entering the environmental compartments. The necessity to meet these requirements has led to the development of scientific research in the field of development of the improved methods for drilling waste utilization, especially under the Far North and Arctic conditions, where the largest oil and gas basins of the country are being developed. The tasks to reduce and prevent pollution in the northern oil and gas fields can be solved with the use of technological methods of drilling waste dehydration, using geotextile filtering containers, which are then used, inter alia, as construction elements for roads and well pads.

The article presents an effective technology for dewatering drilling waste, employing the soft filter containers. The dehydrated drilling cuttings were assigned to the 5th hazard group and can be used in construction works in the field area. The resulting water filtrate after its separation from liquid hydrocarbons is used to re-prepare drilling mud or to maintain formation pressure. The achieved high efficiency of the drilling cuttings treatment became the basis for the development of a new device for the dewatering and packing of drilling oil cuttings – textile decanter. The technology is currently undergoing pilot testing at the drilling waste landfill in Novy Urengoy, and new data collection allows further optimization of the waste treatment process.


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