• Swelling properties of clay rocks by the example of P-1 well
  One of the challenges faced by the Drilling Fluids Service is the drilling through clay rocks. The word clay is often a synonym for: shale, marlstones, shalestones, siltstones or any rock sensitive to hydration. Getting to know the drilled clay rocks allows for proper selection of drilling mud parameters which will ensure safe and trouble-free drilling of the borehole. During the drilling of the P-1 well on the Carpathian Flysch samples of the carried cuttings from the drilled clay rocks were collected. These samples of cuttings were checked for their interaction with water and compared to the Miocene Shale, which sample was obtained from the outcropping bed. ...more

• The impact of graphene nanopowder additon on fresh cement slurries
  Nowadays drilling works are more and more complex, for example: horizontal drilling, horizontal directional drilling and multilateral boreholes. It is necessary to modify and constantly improve cement slurries. There are many researchers trying to find new recipes and substances that could influence properties of fresh and hardened cement slurries. The idea of adding graphene nanopowder appeared during laboratory research of cement slurries used to seal geothermal wells. It is commonly known that graphene has good heat conductivity. Thanks to its tiny parts (12 nm flake) graphene could be used to improve other parameters like filtration, sedimentation stability and setting time. Graphene nanopowder used in studies has the 99.2% purity and surface area of 80 m2/g. Nanopowder concentration in the slurry did not exceed 0,5%. There are plans to carry out next. ...more

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