Marine CSEM Technology Performance–Limitations or Opportunities

Stefatos, A.; Hesthammer, Jonny; Boulaenko, Mikhail

doi:10.3997/2214-4609.20145521

Cited by 3 publications

(4 citation statements)

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“…Specifically, the solution to the Maxwell's equations, (1) and (2) in the quasi-static case can be obtained using FD or FE numerical techniques. Equations (1) and (2) can be expressed as general wave equations for conductive medium in frequency domain as [6],…”

Section: Methodsmentioning

confidence: 99%

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2D forward modeling of marine Controlled Source Electromagnetic (CSEM) data for salt-dome and stratigraphy trap reservoir

Hussain

Karsiti

Yahya

et al. 2012

2012 4th International Conference on Intelligent and Advanced Systems (ICIAS2012)

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The main elements of hydrocarbon saturated reservoirs are identified by using various geological survey techniques. For many years, marine Controlled Source Electromagnetic (CSEM) method is effectively being used for detection and observation of hydrocarbon reserves, either in shallow or deep water exploration. In this paper, 2D forward modeling is used to study electromagnetic (EM) field behavior in salt dome trap reservoir and stratigraphy trap reservoir. In this paper, we employs 2D forward modeling algorithm using finite difference (FD) method and finite element (FE) method to solve EM-field governing equations. The solution is achieved through i) applying staggered scheme for FD method, and ii) Galerkin scheme for Finite Element (FE) method. Both schemes used the optimal grid technique that extends the boundaries of the mesh outward from the region of interest using a minimal number of nodes, and direct matrix solution technique that allows for simultaneous solution for all sources. Results obtained for salt dome trap and stratigraphy trap shows the discrimination of EM signal for reservoir filled with hydrocarbon and without hydrocarbon. The obtained results can be used to verify the inversion of marine CSEM data.

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Section: Methodsmentioning

confidence: 99%

“…Forward modeling is an essential tool for EM geophysical surveys and confidence modeling [2]. In geophysics, it is used to measure the overall field response for certain stratified geological model and these information are to be used for the interpretation of geological structure, also known as inversion.…”

Section: Introductionmentioning

confidence: 99%

2D forward modeling of marine Controlled Source Electromagnetic (CSEM) data for salt-dome and stratigraphy trap reservoir

Hussain

Karsiti

Yahya

et al. 2012

2012 4th International Conference on Intelligent and Advanced Systems (ICIAS2012)

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“…During the past several years there has been an increasing focus on the use of CSEM technology for hydrocarbon exploration in marine environments Ellingsrud et al 2002;Røsten et al 2003;Hesthammer et al 2005;Choo et al 2006;Smit et al 2006;Boulaenko et al 2007;Stefatos et al 2009;Hesthammer et al 2010).…”

Section: Introductionmentioning

confidence: 98%

The performance of CSEM as a de‐risking tool in oil and gas exploration

Hesthammer

Stefatos

Fanavoll

et al. 2010

SEG Technical Program Expanded Abstracts 2010

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“…This method combines with controlled source current data and navigation data to obtain AVO (Amplitude versus Offset) and PVO (Phase versus Offset) data, and it gets shallow submarine resistivity information [4][5][6] after one-dimensional resistivity inverse. The MCSEM method requires high-precision seabed electromagnetic signals observed, however, electric signal is very weak in the marine environment [7][8][9] .…”

Section: Introductionmentioning

confidence: 99%

Time synchronization for marine controlled source electromagnetic recorder

Chen

Wei

Dend

et al. 2012

2012 9th International Conference on Fuzzy Systems and Knowledge Discovery

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Fund: "11• 5" 863 major projects subject -the submarine gas hydrate electromagnetic detection technology (2006AA09A201) Central university funding basic research Abstract-As an effective method to improve the successful rate of marine oil and gas drilling, marine controlledsource electromagnetic method requires acquisition of many marine controlled-source electromagnetic receivers which record electromagnetic data on the same time axis. However, receiver works on the seabed where GPS signal is shielded and relatively constant temperatures, this will bring about a consequence that the land synchronization method could not be implemented. To get the marine receivers which are time synchronization, we combine the GPS and OCXO (Oven Controlled Crystal Oscillator), and then calculate time drift. This method makes time drift down minimum by time drift compensation between different receivers.

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Marine CSEM Technology Performance–Limitations or Opportunities

Cited by 3 publications

References 0 publications

2D forward modeling of marine Controlled Source Electromagnetic (CSEM) data for salt-dome and stratigraphy trap reservoir

2D forward modeling of marine Controlled Source Electromagnetic (CSEM) data for salt-dome and stratigraphy trap reservoir

The performance of CSEM as a de‐risking tool in oil and gas exploration

Time synchronization for marine controlled source electromagnetic recorder

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