[1]彭烈新,劉珂,高文凱,等.基于隨鉆電阻率成像測井的數據壓縮方法[J].測井技術,2020,(03):241-244.[doi:10.16489/j.issn.1004-1338.2020.03.005]
 PENG Liexin,LIU Ke,GAO Wenkai,et al.Data Compression Method Based on Resistivity Imaging Logging While Drilling[J].WELL LOGGING TECHNOLOGY,2020,(03):241-244.[doi:10.16489/j.issn.1004-1338.2020.03.005]
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基于隨鉆電阻率成像測井的數據壓縮方法()
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《測井技術》[ISSN:1004-1338/CN:61-1223/TE]

卷:
期數:
2020年03期
頁碼:
241-244
欄目:
資料處理
出版日期:
2020-05-15

文章信息/Info

Title:
Data Compression Method Based on Resistivity Imaging Logging While Drilling
文章編號:
1004-1338(2020)03-0241-04
作者:
彭烈新 劉珂 高文凱 毛偉民 賈衡天 王鵬
(中國石油集團工程技術研究院有限公司, 北京 102206)
Author(s):
PENG Liexin LIU Ke GAO Wenkai MAO Weimin JIA Hengtian WANG Peng
(CNPC Engineering Technology R&D Company Limited, Beijing 102206, China)
關鍵詞:
隨鉆成像測井 小波變換 嵌入式零樹編碼 多級樹集合分裂編碼 數據壓縮
Keywords:
imaging logging while drilling wavelet transform embedded zerotree coding multilevel tree set splitting coding data compression
分類號:
P631.84
DOI:
10.16489/j.issn.1004-1338.2020.03.005
文獻標志碼:
A
摘要:
隨鉆測井作業與鉆井作業同步進行,在鉆井液濾液還未侵入地層或者侵入井壁很淺時獲得測井資料,能準確反映原狀地層特征,油氣儲量評價準確。圖像壓縮是隨鉆電阻率測井實時成像的關鍵技術,通過分析多種圖像壓縮方法,發現小波編碼適合隨鉆電阻率成像測井,在此基礎上,分析嵌入式零樹編碼和多級樹集合分裂編碼2種小波變換算法,進行Matlab仿真。多級樹集合分裂編碼方法在50倍壓縮率條件下,能夠保持較高的圖像質量,可滿足隨鉆電阻率測井實時成像數據壓縮需要。
Abstract:
Logging while drilling and drilling operations are carried out simultaneously, logging data are obtained when the formation has not be invaded by the mud or the borehole wall invasion is shallow, which can accurately reflect the characteristics of virgin zone and accurately evaluate oil and gas reserves. Imaging data compression is the key technology of resistivity imaging logging while drilling. Analyzing various imaging data compression methods, it is found that wavelet coding is suitable for resistivity logging while drilling. Two wavelet transformation of embedded zero-tree coding and multi-level tree set splitting coding are analyzed and simulated in detail. The results show that the multi-level tree set splitting coding method can maintain high image quality under the condition of 50 times compression rate, which is suitable for real-time imaging data compression of resistivity logging while drilling.

參考文獻/References:

[1] BORGHI M, PIANI E, BARBIERI E, et al. New logging-while-drilling azimuthal resistivity and high resolution imaging in slim holes [C]∥Offshore Mediterranean Conference and Exhibition. Ravenna, Italy: 2011, March: 23-25.
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備注/Memo

備注/Memo:
(修改回稿日期: 2020-04-09 本文編輯 杜雪威)基金項目: 中國石油天然氣集團公司重大工程關鍵技術裝備研究與應用專項二期課題“近鉆頭伽馬電阻率成像隨鉆測井系統研發”(2018E-2107); 中國石油集團工程院重點支持課題“全旋轉鉆頭指向式導向工具研制”(CEPT201801) 第一作者: 彭烈新,男,1968年生,博士后,高級工程師,從事隨鉆測量和導向工具研究。E-mail:[email protected]
更新日期/Last Update: 2020-05-15
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