Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Modelling earthquake risk of gas fields

03.12.2003


Using qualitative modelling, the risk of earthquakes due to gas extraction can be determined more clearly. “This is done by using three dimensional modelling software to calculate and simulate the forces and movements around geological faults deep under the ground,” says Frans Mulders who, on 3 December, will defend his PhD thesis at TU Delft. “Currently, the KNMI determines the probability of earthquakes primarily through statistical data,” says Mulders. “It is important to complement that data with knowledge of the geological structure underground.” Mulder conducted his research in cooperation with TNO-NITG, NAM, Shell, KNMI and State Supervision of Mines.

In recent months, three light earthquakes hit the province of Groningen. Geologists agree that the quakes are related to gas extraction. It is possible to use historical statistical data of these kind events to make a prediction for the future. “That is what the KNMI (national research and information centre for climate, climatic change and seismology) is currently doing,” says Mulders. “Valuable data, but combining this with knowledge of underground the geological structure is worth recommendation. This is currently being worked on at TNO-NITG in cooperation with KNMI.”

Mulders used three dimensional (3D) simulations to research activity deep under the ground. He has integrated so-called Mobilised Shear Capacity (MSC) parameters into his models. This parameter provides a numerical value for the instability of certain layers and the faults they contain. Mulders: “Such a parameter, linked to other data, forms a basis for the calculation of the probability of earthquakes near gas fields.” According to Mulder, earthquakes will continue to happen every now and then in Groningen. “As long as gas is extracted, there will be movement in the ground.”



The numerical models that Mulders has developed are representative for the underground of the Northern Netherlands, but due to their generic character they are also representative for other oil and gas fields in similar conditions. “Here the weakness of the models also shows,” says Mulders, “While you can simulate many situations with the 3D models, you need a lot of data on the geological structure of the area to produce good estimations. This data is often lacking.” The combination of statistics, 3D modelling and geological information needs further research.

Maarten van der Sanden | alfa
Further information:
http://www.tudelft.nl

More articles from Earth Sciences:

nachricht Geophysicists and atmospheric scientists partner to track typhoons' seismic footprints
16.02.2018 | Princeton University

nachricht NASA finds strongest storms in weakening Tropical Cyclone Sanba
15.02.2018 | NASA/Goddard Space Flight Center

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: In best circles: First integrated circuit from self-assembled polymer

For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.

In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...

Im Focus: Demonstration of a single molecule piezoelectric effect

Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale

Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...

Im Focus: Hybrid optics bring color imaging using ultrathin metalenses into focus

For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.

But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...

Im Focus: Stem cell divisions in the adult brain seen for the first time

Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.

The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...

Im Focus: Interference as a new method for cooling quantum devices

Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters

Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

2nd International Conference on High Temperature Shape Memory Alloys (HTSMAs)

15.02.2018 | Event News

Aachen DC Grid Summit 2018

13.02.2018 | Event News

How Global Climate Policy Can Learn from the Energy Transition

12.02.2018 | Event News

 
Latest News

'Lipid asymmetry' plays key role in activating immune cells

20.02.2018 | Life Sciences

MRI technique differentiates benign breast lesions from malignancies

20.02.2018 | Medical Engineering

Major discovery in controlling quantum states of single atoms

20.02.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>