Montanuniversitat Leoben

Montanuniversitaet Leoben

Montanuniversaität Leoben

Herbert Hofstätter

Clemens Holzer

Energy recovery medium for insertion into a ground hole in a ground comprising a recoverable energy carrying medium, wherein the energy recovery medium comprises a base liquid, a carbohydrate-based thickener mixed in the base liquid, a salt dissolved in the base liquid and configured for increasing a density of the base liquid, and proppant particles dispersed within the mixture of the base liquid, the thickener and the salt.

Ground supporting energy recovery medium with carbohydrate-based thickener, salt and proppant in base liquid

There is provided a method of fabricating a composite material, the method comprising providing borehole solids originating from a borehole in the earth and embedding the borehole solids in a base material thereby forming the composite material, wherein the base material comprises a polymer. According to an embodiment, the borehole solids contain oil, e.g. on a surface thereof. The oil containing borehole solids may be preprocessed before embedding or may be directly embedded in the base material without preprocessing. Such embodiments allow for a recycling of oil contaminated borehole solids while providing a resource for a filler for polymers.

Recycling of borehole solids in polymers

The present invention describes a pumping device () for pumping fluids. The pumping device () comprises a force transmitting element (), a tension unit () coupled to the force transmitting element () and a seal element (). The force transmitting element () is adapted for transferring an upstroke and a downstroke to a pump plunger () for pumping fluid (). The tension unit () is adapted for applying a tension force (F) to the force transmitting element () for keeping the force transmitting element () under tension during the upstroke and the downstroke. The seal element () is adapted for sealingly preventing pumping fluids () during the downstroke and for enabling pumping fluid () during the upstroke. A part () of the seal element () is rigidly coupled with the force transmitting element ().

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Vöcklabruck, Austria

Herbert Hofstätter