Laboratory

CEMENT AND DRILLING FLUID LABORATORY CENTRE

OVERVIEW 

With a well-equipped laboratory and qualified staffs, the Cement and Drilling fluid Laboratory Centre at the Institute of Petroleum Engineering, Clausthal University of Technology offers application oriented research and development, practical teaching courses as well as other services for the oil, gas and geothermal industry. 

RESEARCH AND DEVELOPMENT 

The Cement and Drilling Fluid Laboratory Centre research and development line focuses on supporting the oil, gas and geothermal industry in finding tailored solutions related to drilling fluids and cement technical problems. Sustainable and innovative technologies are our signature. 

Main research and development areas are: 

  • Design and testing of drilling and workover fluids under wellbore conditions  
  • Design and testing of cement slurries under wellbore conditions
  • Investigation of both drilling fluids and cement behavior in HPHT conditions 

SERVICE 

We are dedicated to support the industry in enhancing their operational capabilities and/or research areas to the highest standards. Our potential services include: 

  • Investigation and testing of materials in the laboratory (drilling, cement, additives, etc.)
  • Support and assistance in field tests in terms of drilling as well as cementing
  • Cement integrity life cycle evaluation under HPHT environment 

HANDS ON PRACTICAL TEACHING 

We take advantage of natural synergies between research and teaching in an international environment. Teaching is offered in-house as well as at customer locations in both German and English languages with emphasis on: 

  • Cement and cementing techniques
  • Drilling fluids 

LABORATORY EQUIPMENT AND INVESTIGATION METHODS 

Our laboratory is furnished with modern and technically certified testing equipment designed to carry out multiple tests under the below classifications: 

A. CEMENT INVESTIGATIONS 

Cement 

  • Density (Pycnometer)
  • Grain size analysis according to DIN 4188 (mesh analysis)
  • Grain size analysis with laser particle
  • Residuals (insoluble) by oven drying according to DIN 1164, part 3 

 

  Image of the Laser Diffraction Particle Size Analyzer 

Cement slurry 

  • Blending according to API Spec 10A (Waring Blender)
  • Free water loss according to API Spec 10A (Baroid filter press: Atm. (RT) & HPHT (Tmax=200 °C; Pmax=4.2 MPa))
  • Flow behavior: apparent and plastic viscosity, flow boundary according to API Spec 10A (Fann-VG-Viscometer, Ofite Model 900 Viscometer)
  • Flow time (Marsh funnel)
  • Consistency and setting time according to API Spec 10A (Halliburton Atm.)
  • HPHT expansion/dilation with ITE measuring device (Halliburton HPHT Consistometer: Tmax=180 °C; Pmax=150 MPa)
  • Pressurized mud balance 

Cured Cement 

  • Compressive strength according to API Spec 10A (MAN hydraulic press: compressive force (F) up to 400 kN)
  • Tensile strength of cured cement sample
  • Shear strength of cured cement sample – using hydraulic press
  • Storage of various cement forms in an autoclave according to API Spec 10A (4 autoclaves: Tmax=180 °C; Pmax=20 MPa; V=8000 cm.)
  • Thermal conductivity using the Solidtherm® method 

B. INVESTIGATION OF MUD SAMPLES 

Mud Samples 

  • Density and specific weight (hydrometer & pressurized mud balance)
  • Water loss time using (Ring-apparatus)
  • Amount of filtrate, filter cake thickness, filter cake texture (BAROID filter press: room temperature (T=RT; Pmax=0.7 MPa) & HPHT (Tmax=200 °C; Pmax=4.2 MPa))
  • Salt and lime content of the filtrate (burette titration method)
  • Drainage time, remaining drainage time (marsh funnel)
  • Solid content (sieving and drying)
  • Sand content (sieve with 0.05 mm mesh size and evaporation method)
  • pH value (pH meter)

 

Representation of the Electronic Viscometer V900

  • Flow behavior (apparent and plastic viscosity), gel strength (Fann-VG-Viscometer, Ofite Model 900 Viscometer), HPHT Viscometer
  • Thermal stress (BAROID roller oven, Tmax=220 °C; Pmax=7 MPa)
  • Blending (IKA agitator & Hamilton Beach blender) 

 

 Representation of the 1100 & HTHP Viscometers 

 

Investigation of Dry Residual Sand 

  • Lime content, clay content
  • Natrium and potassium content 

Frac Fluid Investigation 

  • Fluid characteristics (density, specific weight, pH value, flow behavior, gel strength)
  • Amount of filtrate (filter press, room temperature) 

Sand and Clay 

  • Particle size distribution (Sieve analysis, laser granulometer)
  • Particle/grain form (microscopic analysis)
  • Flame photometer – Sodium/Potassium 

 

Click here to download flyer 

CONTACT US 

The university town of Clausthal-Zellerfeld is located in the administrative district of Goslar in the State of Lower Saxony (Niedersachsen), in the southwestern part of the Harz Mountains. Clausthal-Zellerfeld is the largest town in the area that is situated directly in the mountains rather than on their edge. 

Clausthal University of Technology 

Institute of Petroleum Engineering 

Agricolastrasse 10 

38678 Clausthal-Zellerfeld 

Germany 

Prof. Dr. -Ing. Joachim Oppelt 

Tel.: +49-5323-72-2450 

Fax: +49-5323-72-3146 

Emailjoachim.oppelt@tu-clausthal.de  

Dr. -Ing. Javier Holzmann 

Tel.: +49-5323-72-2452 

Fax: +49-5323-72-3146 

Email: javier.holzmann@tu-clausthal.de  

 

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