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[1]張偉偉,黃勝,劉文華,等.深部硬石膏巖蓋層地應力測井評價方法[J].測井技術,2019,43(01):64-69.[doi:10.16489/j.issn.1004-1338.2019.01.012]
 ZHANG Weiwei,HUANG Sheng,LIU Wenhua,et al.Log Evaluation Method of Geo-stress in Deep Anhydrite Cap Rock[J].WELL LOGGING TECHNOLOGY,2019,43(01):64-69.[doi:10.16489/j.issn.1004-1338.2019.01.012]
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深部硬石膏巖蓋層地應力測井評價方法()
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《測井技術》[ISSN:1004-1338/CN:61-1223/TE]

卷:
第43卷
期數:
2019年01期
頁碼:
64-69
欄目:
綜合應用
出版日期:
2019-04-20

文章信息/Info

Title:
Log Evaluation Method of Geo-stress in Deep Anhydrite Cap Rock
文章編號:
1004-1338(2019)01-0064-06
作者:
張偉偉1 黃勝1 劉文華1 趙永昌1 代紅霞1 鄧文傳1 尹帥2
(1.中國石油集團測井有限公司華北分公司, 河北 任丘 062552; 2.西安石油大學地球科學與工程學院, 陜西 西安 710065)
Author(s):
ZHANG Weiwei1 HUANG Sheng1 LIU Wenhua1 ZHAO Yongchang1 DAI Hongxia1 DENG Wenchuan1 YIN Shuai2
(1. Huabei Branch of China Petroleum Logging CO. LTD., Renqiu, Hebei 062552, China; 2. School of Earth Science and Engineering, Xi'an Shiyou University, Xi'an, Shaanxi 710065, China)
關鍵詞:
測井評價 橫波時差 硬石膏巖 巖石力學 地應力
Keywords:
log evaluation shear wave time difference anhydrite rock rock mechanics geo-stress
分類號:
P631.84
DOI:
10.16489/j.issn.1004-1338.2019.01.012
文獻標志碼:
A
摘要:
硬石膏巖具有極低的滲透性及良好的壓力封閉能力,通常作為大型油氣藏的良好區域蓋層。塔里木盆地西南部地區古近系地層深部發育較厚的硬石膏巖層。深部硬石膏巖層的地質特征及應力環境相對復雜,對其地應力進行精細測井評價可以為高效鉆探提供依據。通過設計三軸力學和聲學同步測試實驗,模擬地層高應力環境,獲取硬石膏巖力學參數。在此基礎上,結合地應力實驗測試及測井方法,對古近系硬石膏巖層地應力進行測井評價。利用頻散校正技術將實驗測試的樣品高頻(1 MHz)波速值轉換為測井頻率(20 kHz)波速值。建立了古近系硬石膏巖的橫波時差及動靜態巖石力學參數解釋模型。利用改進的Newberry模型對目的層地應力進行了測井評價,整體地應力預測結果的相對誤差為5.6%,絕對誤差為3.16 MPa,能夠滿足工程需要。
Abstract:
Anhydrite rock has very low permeability and great pressure sealing ability it is usually used as a good regional cap rock for large oil and gas reservoirs. The deep strata of Paleogene in the southwestern Tarim Basin were developed with thick anhydrite rock formations. The geological characteristics and stress environment of this deep anhydrite rock layer were relatively complex and fine logging evaluation of its geo-stress can provide a basis for efficient drilling. In this paper the triaxial mechanics and acoustic synchronization test experiments were designed to simulate the high stress environment of the formation and obtain the mechanical parameters of anhydrite. On this basis combined with the experimental test of ground stress and logging method the logging stress of the Paleogene anhydrite rock stratum was evaluated. In addition using frequency dispersion correction technology the high frequency(1 MHz)wave velocity value of the sample was converted to the wave velocity value of logging frequency(kHz)and the model of transverse wave time difference and dynamic static rock mechanics parameters of Paleogene anhydrite Rock was established. The improved Newberry model was used to evaluate the geo-stress of the target layer the relative error of the overall geo-stress prediction result was 5.6% and the absolute error was 3.16 MPa which can meet the engineering needs.

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奇迹觉醒刷怪最强职业 www.gtarc.icu
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備注/Memo

備注/Memo:
第一作者: 張偉偉,女,1981年生,工程師,從事測井資料解釋與評價研究。E-mail:[email protected]
更新日期/Last Update: 2019-04-20