Simultaneous reconstruction of geometric parameter and resistivity around borehole in horizontally stratified formation from multiarray induction logging data

Wang, Hongnian

doi:10.1109/tgrs.2002.808070

Cited by 12 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wash zone resistivity is an essential parameter in petroleum resource exploration and is important for formation evaluation (Tian et al, 2003;Salazar and Torres-Verdin, 2009) Although certain array logging methods, such as array induction (Wang, 2003;Li et al, 2012;Zhou et al, 2016;Bai et al, 2018) and lateral logging (Li et al, 2010;Zhao et al, 2019;Zhu et al, 2019), can detect formation features at different radial depths, their greater detection depths pose difficulties in the accurate evaluation of mudcake and electrical parameters in shallow formations. To finely measure the resistivity of shallow formations, resistivity logging instruments achieve a reduced detection depth by reducing the electrode distance.…”

Section: Introductionmentioning

confidence: 99%

Research and application of high-resolution micro-cylindrically focused logging tool

Xia

et al. 2023

Front. Earth Sci.

View full text Add to dashboard Cite

The unknown nature and complexity of non-uniform formations cause new difficulties and challenges to the accurate detection of electrical instruments in shallow formations. The micro-cylindrically focused logging tool (MCFL) can provide three original measurement curves, RB0, RB1, and RB2, with different detection depths, which reflect the flushing zone resistivity, mudcake resistivity, and mudcake thickness. In this study, the finite element method was used to model and analyze the micro-cylindrically focused logging tool tool in a three-dimensional non-uniform medium model. By converting the partial differential equation into a generalized polar problem, the logging response characteristics of the micro-cylindrically focused logging tool tool at different detection depths and ranges, mudcake thicknesses, flush zones, and mudcake resistivity contrasts were investigated. Inverse processing of the micro-cylindrically focused logging tool data using the least-squares method was used to obtain the flush zone resistivity, mudcake resistivity, and mudcake thickness, based on which the micropotential and microgradient curves were synthesized. In addition, a digital focusing method was proposed to improve the focusing accuracy and flexibility of the instrument, enhancing the performance of the micro-cylindrically focused logging tool. The optimized design of the focusing method significantly improved the detection performance of the pole plate. This plays an important role in the evaluation of thin layers and oil-water reservoirs.

show abstract

Section: Introductionmentioning

confidence: 99%