Wellbore Fluids Laboratory

Lab activity

Drilling fl uids laboratory is used in education and scientific research. Laboratory is equipped with instruments and devices that enable drilling fl uid preparation, drilling fl uid additives testing and determination of drilling fl uid properties according to API Spec 13A and recommended practice for laboratory testing of drilling fl uids RP 13B. The laboratory is used for the following: (I) determining the density of drilling fl uid, (II) conditioning the drilling fl uid, (III) determining the rheological properties of drilling fl uid at ambient conditions, (IV) determination of the viscosity of drilling fl uids at atmospheric pressure and temperatures up to 88 °C, (V) measuring the shear stress and the viscosity at diff erent shear rates, (VI) the calculation of rheological parameters of drilling fl uid in simulated downhole conditions, (VII) testing filtration under high pressure and temperature, (VIII) the determination of the coeffi cient of friction of mud and compare the quality of diff erent lubricants, (IX) determining the fi ltration of drilling fl uid at room temperature in conditions of elevated temperatures and pressures, and (X) determination of time of capillary absorption.

Head of laboratory: This email address is being protected from spambots. You need JavaScript enabled to view it., Prof., PhD

SERVICES

Drilling fluid preparation
Determining the density of drilling fluids
Conditioning of drilling fluids
Determining the rheological properties of drilling fluids at ambient conditions
Determination of the viscosity of drilling fluids at atmospheric pressure and temperatures of up to 88 °C
Measuring the shear stress and the viscosity at different shear rates
Calculation of rheological parameters of drilling fluids in simulated downhole conditions
Testing filtration under high pressure and temperature
The determination of the mud friction coefficient and quality comparison of different lubricants
Determining the filtration of drilling fluids at room temperature in conditions of elevated temperatures and pressures
Determination of capillary absorption time
Preparation of cement slurry
Determining the density of cement slurry
Determining the rheological properties of cement slurry
Determining the thickening time of cement slurry at atmospheric pressure and elevated temperature
Determining the free water content in the cement slurry

Analytical procedure and test method

Analytical procedure		Test method
Preparation of laboratory samples of mud		API standard
Determination of density mud		API standard
Determination of sand in the mud		API standard
Determination of solid particles, water and oil in the mud		API standard
Determination of filtration properties of drilling fluids		API standard
Measuring inflates rock samples in different fluids		API standard
Measuring the stability of emulsion mud		API standard
Making compacted samples rocks		API standard
Determination of time of capillary absorption		API standard
Examine the possibility of drilling fluid that creates a bypass to stijnkama wellbore		API standard
Determination of rheological properties of drilling fluids at high pressure and high temperature (260 ° C, 6895 kPa)		API standard
Testing of lubricating properties of drilling fluid		API standard
Examination of the possibility of a differential reception		API standard
Testing dispersion of debris rocks		API standard
Preparation of laboratory samples of mud		API standard

Small and medium sized equipment

Name inventory	Tech. characteristics	Application	Image
Viscometer for testing of fluids under high pressures and temperatures - Model 1000	Working features: Pressure : up to 6895 kPa (1000 psi) Temperature: 260 °C Shear Rate Range: 0,01 – 1700 s-1 Dimensions: 30 cm x 30 cm x 70 cm	Determination of drilling fluid filtration properties and fluid design.
Permeability Plugging Tester - PPT	Working features: Pressure : up to 13800 kPa Temperature: 260 °C Cell Volume: 500 ml Dimensions: 38 cm x 63,5 cm x 107 cm	Drilling fluids rheological parameters determination.
Determination of rheological properties of fluids	Working features: Temperature: Ambient temperature Torque: 16,95 Nm Ring rotational speed: 60 min-1 Dimensions: 48 cm x 38 cm x 36 cm	Determination of the lubricating quality of the drilling fluids.
Digital Viscometer – Model 900	Working features: Pressure : atmospheric Temperature: up to 88 °C Shear Rate Range: 0,01 – 1700 s-1 Dimensions: 44 cm x 23 cm x 14 cm	Drilling fluids rheological parameters determination.
Differential Sticking Tester	Working features: Pressure : 3291 kPa Temperature: ambient Cell Volume: 200 ml Dimensions: 15 cm x 15 cm x 46 cm	Determination of drilling fluids tendency to differential sticking.
Test Kit		Determination of the drilling fluid properties.
Capillary Suction Timer	Working features: Temperature: Room temperature Pressure: Atmospheric Power: Battery 9V Dimensions: 16,2 cm x 11 cm x 6 cm	Determination of the influence of electrolyte and/or polymer concentration on shale swelling inhibition.
Roller Oven With Programmable Timer	Working features: Temperature: up to 232°C Cell volume: 260/500 ml Rotational speed: 25 min-1	Aging of the drilling fluids under static or dynamic conditions and from ambient to highly elevated temperature.
Dynamic Linear Swellmeter Complete with Compactor	Working features: Temperature: up to 480°C Pressure: atmospheric Cell volume: 160 ml Rotational speed: 1100 min-1 Samples Compaction Pressure: up to 68,9 MPa	Drilling fluid optimization.
Electrical Stability Meter	Working features: Pressure: atmospheric Temperature: Ambient temperature Power: Battery 9 V	Determination of the oil mud emulsion stability.
pH Meter	Type: pH135i; measurement range: pH = -2 up to +16; U (mV) = -1999 up to + 1999; T (°C) = -5 up to +105; calibration standards: pH 4, 7 and 10; electrode storing solution KCl.	Drilling fluids testing, environment protection; pH chek-out in the various chemical analyses.
Driers	Temperature: 50-200°C; 220V, 500W.	Determination of humidity in soil and sediment samples; determination of crystalline water in geological material samples; sample preparation for analysis carried out at the Petroleum Engineering Department.
Centrifuges	200W, 220V, 4000 rpm	Sample preparation for chemical, granulometric and other analysis carried out at the Petroleum Engineering Department.
Mixers	Rotation speed: 1) 3 speeds – 13000, 16000, 18000 rpm, 2) 1 speed – 11000 rpm, 3) 2 speeds – 4000 i 12000 rpm.	Preparation of drilling fluid for testing.
Brookfield viscometer	Environmental conditions: pressure: atmospheric temperature: room temperature range of shear rates: 0,01 s-1 – 245 s-1	Determination of the viscosity (in particular the value of LSRV fluids).

Teaching in the laboratory

Teaching in the laboratory (students' practical work) in 2016/2017
Course title	Mandatory or Elective course	Number of hours of practical work in lab	Number of students per group	Number of groups
Wellbore fluids 1	Mandatory	30	8	6
Wellbore fluids 2	Mandatory	45	6	3