[1]趙永剛,冉利民,吳非.螺紋井眼測井曲線頻域濾波校正[J].測井技術,2012,36(05):499-503.
 ZHAO Yonggang,RAN Limin,WU Fei.Frequency Domain Filtering Correction of Log Data from a Corkscrew Borehole[J].WELL LOGGING TECHNOLOGY,2012,36(05):499-503.
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螺紋井眼測井曲線頻域濾波校正()
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《測井技術》[ISSN:1004-1338/CN:61-1223/TE]

卷:
第36卷
期數:
2012年05期
頁碼:
499-503
欄目:
處理解釋
出版日期:
2012-10-31

文章信息/Info

Title:
Frequency Domain Filtering Correction of Log Data from a Corkscrew Borehole
作者:
趙永剛1冉利民1吳非2
1.中國石化集團華北石油局測井公司, 河南 新鄉 453700; 2.中國石化集團石油工程技術研究院, 北京 100101
Author(s):
ZHAO Yonggang1RAN Limin1WU Fei2
1.Logging Company of Huabei Petroleum Administration, SINOPEC, Xinxiang, Henan 453700, China; 2.Petroleum Engineering Technology Institute, SINOPEC, Beijing 100101, China
關鍵詞:
測井解釋 螺紋井眼 頻域濾波 傅里葉變換 低通濾波
Keywords:
log interpretation corkscrew borehole frequency domain filter Fourier transform algorithm lowpass filtering
分類號:
P631.84
文獻標志碼:
A
摘要:
油田勘探開發中由于鉆井工藝的影響,會出現螺紋狀井眼現象,導致測井曲線出現起伏,給儲層參數計算及測井解釋帶來嚴重影響。分析了螺紋井眼對補償密度和中子、電法、聲波、雙感應、陣列感應等測井曲線的影響。根據快速傅里葉變換進行了測井曲線的頻譜分析,設計相應的低通濾波器對測井曲線進行濾波處理,使測井曲線上螺紋井眼的影響明顯減弱,測井資料得到優化。應用該方法對鎮涇油田ZJ××井實際測井資料進行處理,處理結果驗證了校正方法的有效性,經過校正的曲線消除了螺紋井眼對測井曲線的影響,能反映地層的真實物理性質。
Abstract:
In the process of oil exploration and development, some boreholes show a corkscrew shape due to the influence of drilling technology. The corkscrew borehole will affect the well logs and the log data will display fluctuations, which causes trouble to the calculation of reservoir parameters and log interpretation. Analyzed is the influence of corkscrew borehole on different logging curves, such as compensated density log and neutron log, electrical log, acoustic log, dualinduction log and array induction log, etc. Based on the fast Fourier transform (FFT) spectrum analysis on the well logs, we use a corresponding lowpass filter for process the log data filtering processing. After frequency domain filtering correction, the influence of corkscrew borehole on the logging curves has been remarkably weakened, and the log curves have been optimized. Practical application in well ZJ28 of Zhenjing oilfield shows that this correction method is effective, the influence of corkscrew borehole on the log curves have been eliminated, and the processed log curves can correctly reflect formation physical properties.

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備注/Memo

備注/Memo:
作者簡介: 趙永剛,男,博士,高級工程師,從事石油測井方法與測井資料綜合解釋研究。
更新日期/Last Update: 2012-10-20
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