Abstract
In order to judge the engineering quality accurately and determine the downhole tool depth or perforation position, the post casing logging depth correction is usually carried out by using the lithology characteristics reflected by the natural gamma curve and the coupling depth characteristics reflected by the casing coupling location logging tool, so as to judge the well depth information comprehensively.
This paper proposes a gamma & casing coupling location logging tool with dynamically gain-modulated. The casing coupling location acquisition unit can meet the needs of borehole logging from 4 inches to 14 inches in the velocity range of 600 to 3600 by adaptive gain adjustment. At the same time, Kalman filter [1, 2] technology is used to eliminate the statistical fluctuation of natural gamma counting pulse due to excessive measurement speed.
Firstly, the logging principle of gamma & casing coupling location logging tool is briefly analyzed, and its shortcomings in the logging process are pointed out; Then, the dynamically gain-modulated algorithm and other functional modules are described in detail; Finally, the indoor test and field application are described.
The development of gamma & casing coupling location logging tool with dynamically gain-modulated can effectively solve the defect of low signal-to-noise ratio due to many factors such as instrument velocity measurement and borehole diameter. The instrument has completed the high temperature performance test at 175 ℃ in the laboratory and got good results. At present, the instrument has participated in the comparative test of several wells in Longdong area of Changqing Oilfield, and qualified logging curves have been obtained.
Copyright 2022, IFEDC Organizing Committee
This paper was prepared for presentation at the 2022 International Field Exploration and Development Conference in Xi’an, China, 16–18 November 2022.
This paper was selected for presentation by the IFEDC Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the IFEDC Technical Team and are subject to correction by the author(s). The material does not necessarily reflect any position of the IFEDC Technical Committee its members. Papers presented at the Conference are subject to publication review by Professional Team of IFEDC Technical Committee. Electronic reproduction, distribution, or storage of any part of this paper for commercial purposes without the written consent of IFEDC Organizing Committee is prohibited. Permission to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of IFEDC. Contact email: paper@ifedc.org.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Peng, D.: Basic principle and application of kalman filter. Softw. Guide 8(11), 32–34 (2009)
Gadeken, L.L., Merchant, A.G., Jaconson, A.L.: The utility of combining smoothing and deconvolution in processing algorithm for well log data. Proc. IEEE Nuclear Sci. 810–816 (1990)
Xie, Y., Zhang, B., Li, H., Zhu, X., Jia, Z.: Drilling tool logging system and process tools. The second symposium on exploration, development and logging technology of complex oil and gas reservoir, Xi’an, China (2021)
Sheng, P., White, B., Nair, B.: Bayesian deconvolution of gamma-ray logs. Geophysics 52(11), 1535–1546 (1987)
Kong, C., Hu, Z., Jin, Y.: Improvement of cable perforating magnetic locator. Well Testing (02),51–52 (2002)
Ma, J., D, J.: Analysis and improvement of logging curve of magnetic positioning instrument. Petrol. Instrument 26(2), 32–34 (2012)
Huang, K.: Embedded Principle and Application of Armcortex-m3. Tsinghua University Press, Beijing (2020)
Yan, X.: Design of medical multi-channel temperature control system based on STM32. Electromech. Technol. 02, 15–17 (2021)
Zhu, M., Zhao, X., You, X.: Marine monitoring network framework based on FreeRTOS and MQTT. Appl. Elec. Technol. 01, 41–44 (2018)
Analog devices AD7665 Data Sheet (Rev. A 2002)
ST Corporation. STM32f205xx / stm32f207xx Data Sheet (Rev. 7 2011)
Meng, B.: STM32 Self Study Notes, 3rd edn. Beijing University of Aeronautics and Astronautics Press, Beijing (2019)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2023 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Liu, Z. et al. (2023). Development of Gamma & Casing Coupling Location Logging Tool with Dynamically Gain-Modulated. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2022. IFEDC 2022. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-99-1964-2_15
Download citation
DOI: https://doi.org/10.1007/978-981-99-1964-2_15
Publisher Name: Springer, Singapore
Print ISBN: 978-981-99-1963-5
Online ISBN: 978-981-99-1964-2
eBook Packages: EngineeringEngineering (R0)