Logging while drilling electromagnetic wave responses in inclined bedding formation

Fan, Yiren; Hu, Xufei; Deng, Shaogui; Yuan, Xingqiu; Li, Haitao

doi:10.1016/s1876-3804(19)60228-4

Cited by 6 publications

(3 citation statements)

References 6 publications

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“…The spacings from T to R1 and T to R2 are L1 and L2, respectively, wherein L2 > L1. The amplitude ratio (EATT) and phase difference (Δϕ) of the two receiving antennas are calculated first and then converted into the formation resistivity using a chart or formula (Fan et al, 2019).…”

Section: Axial Receiving Antennamentioning

confidence: 99%

“…Conventional LWD electromagnetic logging tools adopt single-transmitting and dual-receiving antennas, symmetrically compensated dual-transmitting and dualreceiving antennas, or multiple-transmitting and multiple-receiving array antennas (Nikitenko et al, 2020;Rodney et al, 1983;Clark et al, 1988;Bittar et al, 1991;Zhou et al, 2016;Fan et al, 2019). All transmitting and receiving antennas are axial, which means that they cannot measure azimuth information.…”

Section: Introductionmentioning

confidence: 99%

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Boundary detection capability and influencing factors of electromagnetic resistivity while using drilling tools in a horizontal well

et al. 2023

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With the increase in the scale of mining in horizontal and highly deviated wells, electromagnetic boundary detection while drilling plays an important role in boundary detection. This paper examines three types of antenna structures commonly used in electromagnetic boundary detection and measurement methods and also performs a numerical simulation of the edge detection capability of the three structures in horizontal wells. The simulation experiment analyzes the influence of formation resistivity contrast, frequency, spacing, and other factors on the capability of edge detection and provides data that supports the design of instrument antenna parameters. The numerical simulation shows that the tilted and orthogonal receiving antennas demonstrate improved performance both in detecting the interface when approaching from high-resistance layers and low-resistance layers. In addition, the capability of boundary detection can be improved by decreasing the frequency and increasing the spacing between the transmitter and receiver.

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Section: Axial Receiving Antennamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Boundary detection capability and influencing factors of electromagnetic resistivity while using drilling tools in a horizontal well

et al. 2023

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“…The particularity of downhole instruments limits the space size of equipment, which brings difficulties to the layout of equipment [10] [11] [12]. The electromagnetic wave resistivity measurement system logging while drilling is composed of coil system and electronic circuit.…”

Section: Electronic System Designmentioning

confidence: 99%

A circuit design framework of electromagnetic wave resistivity logging while drilling instrument

Hao

Meng

et al. 2022

J. Phys.: Conf. Ser.

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Formation resistivity is an important geological parameter necessary for geosteering drilling and oilfield formation evaluation. At present, the mainstream resistivity measurement methods mainly include current measurement and electromagnetic wave measurement. Current resistivity measurement is difficult to be applied in drilling fluids with poor conductivity or non-conductivity, while electromagnetic wave resistivity measurement is suitable for various types of conductive and non-conductive drilling fluids. Nowadays, the most important geological guiding tool for Sichuan-Chongqing Shale Gas, Xinjiang Oilfield, Jilin Oilfield, Daqing Oilfield and Qinghai Oilfield Company rely on electromagnetic wave resistivity measurement, and the market demand is about 90 million yuan per year. Western Drilling, Chuanqing Drilling and Bohai Drilling have more than 100 branches of electromagnetic wave resistivity logging while drilling instrument, and the market demand is about 21 ∼30 million yuan per year. Domestic electromagnetic wave resistivity logging while drilling instrument mainly rely on imports. At the same time, after field application, it needs to be sent back to the original factory for maintenance. Therefore, it is very necessary to design an electromagnetic wave resistivity logging while drilling instrument with independent intellectual property rights.

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Numerical and physical simulations of array laterolog in deviated anisotropic formation

Wu¹,

Wu²,

Fan³

et al. 2022

Petroleum Science

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Logging while drilling electromagnetic wave responses in inclined bedding formation

Cited by 6 publications

References 6 publications

Boundary detection capability and influencing factors of electromagnetic resistivity while using drilling tools in a horizontal well

Boundary detection capability and influencing factors of electromagnetic resistivity while using drilling tools in a horizontal well

A circuit design framework of electromagnetic wave resistivity logging while drilling instrument

Numerical and physical simulations of array laterolog in deviated anisotropic formation

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