Crosshole electromagnetic tomography: A new technology for oil field characterization

Wilt, Michael; Morrison, H. F.; Becker, Alex; Tseng, Hung-Wen; Lee, Ki Ha; Torres‐Verdín, Carlos; Alumbaugh, David

doi:10.1190/1.1437106

Cited by 44 publications

(26 citation statements)

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“…As previously reported by Wilt et al (1995), we demonstrated the practicality and utility of interwell measurements on an oil field scale, at Devine, TX and at Lost Hills, CA. On a smaller scale, we cmried out a demonstration of interwell and surface to borehole EM tomography with controlled experiments at the University of California Richmond Field Station.…”

Section: Introductionmentioning

confidence: 54%

Subsurface electromagnetic measurement through steel casing

Becker¹,

Wang²,

Lee³

1998

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Section: Introductionmentioning

confidence: 54%

Subsurface electromagnetic measurement through steel casing

Becker¹,

Wang²,

Lee³

1998

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“…Only when the resistivity of all pixels is equal is the response expression the same as in equation (1). In the process of measuring, the receiver is fixed in one well at regular intervals, and the transmitter moves continuously along the other well.…”

Section: Tomography Theorymentioning

confidence: 99%

Application Research of Crosshole Electromagnetic Tomography

Zeng¹,

Zhao²,

Zang³

2001

Chinese J of Geophysics

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[Abstract] The main technological objective of crosshole EM tomography is to realize direct electrical measurements between wells and acquire 2D or 3D resistivity images reflecting hydrocarbon and water distribution between wells. A co-operation and joint study between The Shengli Oilfield and EMI for the application method of the crosshole EM system has been on-going since 1997. The co-operation is comprised of the following components: further examination the performance of the tools used for EM tomography, explicit improvement direction, analysis of the adaptability and feasibility to reservoir research through large-scale systematic field tests on large well separation; acceleration of the development of a processing and interpretation method as well as the software used for this method based on systematic field data; the continuation of systematic tests in steel-cased boreholes, and exploration of the resistivity imaging method in the condition of steel-casing. In November 1998, and June and July 1999, large-scale industrial field tests with 10 measurements in 3 pairs of wells were successfully conducted in the low resistivity profile in the Shengli Oilfield. First,the formation was typical of low resistivity profiles, the background resistivity being only 1.5-2.0 Ωm. The attenuation of the EM energy in the formation is very serious. Second, the field tests were conducted systematically, passing through one and two steel-casings. The desired goals were achieved in the three tests. Not only was the performance of the tools proven to be stable and reliable, but also complete crosshole EM data with good repeatability and accuracy was acquired between the wells with the separation of 434 m from open-hole to openhole and 150m from open-hole to casing-hole for the first time ever. The resistivity images derived from the data inversion shows good geological results in the analysis of hydrocarbon distribution and reservoir recovery states between wells.

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“…The second example is a crosswell example which simulates the EM monitoring of an enhanced oil recovery process such as the one examined in Wilt et al (1995b). As shown in Figure 6a, a conductive block representing either a hot water or steam stimulation is placed in a 100 SZm layer representing an oil bearing layer.…”

Section: Crosswell Simulationmentioning

confidence: 99%

Three-dimensional electromagnetic modeling and inversion on massively parallel computers

Newman¹,

Alumbaugh

1996

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Crosshole electromagnetic tomography: A new technology for oil field characterization

Cited by 44 publications

References 0 publications

Subsurface electromagnetic measurement through steel casing

Subsurface electromagnetic measurement through steel casing

Application Research of Crosshole Electromagnetic Tomography

Three-dimensional electromagnetic modeling and inversion on massively parallel computers

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