【正文】 ploration activity, drilling and development project. Firstly, with the review of literature and numerous studies, a program on analyzing plex lithology is developed on the basis of formation features of Heba and Yuanba regions in northeastern Sichuan. Vertical volume profiles of rocks are set up with the calculation of mineral position and content, shale content, and porosity. Secondly, with the available dipole shear wave logging data, the functional relations of AC and DTS are established respectively for land and sea phase. The models on calculating dynamic lithomechanic parameters are also set up on the strength of the logging data just like AC, GR, and DEN. At the same time, with the bination of experiment data, the dynamic lithomechanic parameters are transferred and obtained the transforming models, which can give a calculating result that fit closely to the static data. Thirdly, according to measured formation pressures, the Eaton experience factors of land and sea phase are anticalculated and the calculating accuracy of Eaton model is improved. In view of the structural features of high and steep piedmonts in northeastern Sichuan, HuangRongzun model is chosen to calculate the crustal stresses. During anticalculating the 2 tectonic stress factors, the traditional view that the tectonic stress factors don’t change with depth is broken in this paper. Through assigning changeable values to tectonic stress factors of different geological layers, the crustal stresses are calculated rest on the logging data. Compared with the experimental results, the correctness of the method is verified. After that, the directions of horizontal stresses in northeastern Sichuan are analyzed by making use of dual caliper logging data and image logging data. The two results obtained have important consistency. Based on these methods and models, a crustal stress interpretation procedure is programmed in FORTRAN language, which helps to plete the study on wells logging data quickly and accurately. Ultimately, the corresponding vertical stress profiles are founded. After that, the transverse rules of horizontal stresses values and directions are analyzed and the rule graphs are built on the basis of SURFER software. All the achievements of this thesis are significant to constructing well efficiently and safely, as well as speeding up oil and gas exploration. Key words： high and steep structure, crustal stress, lithomechanic parameters, experimental study。同時在此基礎(chǔ)之上， 利用 Surfer 軟件對水平主應(yīng)力數(shù)值和方向的橫向展布規(guī)律進(jìn)行了分析研究，最后得出不同地質(zhì)層位上的規(guī)律分布圖。然后，本論文利用雙井徑測井資料和成像測井資料對川東北地區(qū)的水平主應(yīng)力方向進(jìn)行分析計算，對比發(fā)現(xiàn)兩種方法所得的結(jié)果有很好的一致性。接下來，根據(jù)川東北地區(qū)山前高陡構(gòu)造的地質(zhì)特征，采用黃榮樽模型計算水平主應(yīng)力。其次，利用偶極橫波資料，分海陸兩相建立起 AC 與 DTS 的函數(shù)關(guān)系，并結(jié)合 AC、 GR、 DEN 等測井資料構(gòu)建出動態(tài)巖石力學(xué)參數(shù)的計算模型，同時與巖石力學(xué)實驗數(shù)據(jù)相結(jié)合進(jìn)行動靜轉(zhuǎn)換，最終轉(zhuǎn)換后模型的計算結(jié)果與靜態(tài)數(shù)據(jù)較吻合。本論文在對靜態(tài)實驗數(shù)據(jù)收集分析的基礎(chǔ)上，充分利用測井資料的連續(xù)性、經(jīng)濟(jì)性和高分辨率等優(yōu)勢對該區(qū)進(jìn)行地應(yīng)力計算與研究，所取得的成果對油氣勘探、開發(fā)有重要的意義。復(fù)雜的構(gòu)造條件給油氣資源的勘探、開發(fā)帶來了極大的挑戰(zhàn)。 摘 要 川東北地區(qū)是我國目前發(fā)現(xiàn)的含有豐富油氣資源的區(qū)域之一。該區(qū)地質(zhì)構(gòu)造極其復(fù)雜， 80%以上都是山前高陡構(gòu)造。特別是對該區(qū)地應(yīng)力大小、方向及橫向展布規(guī)律的認(rèn)識不清，給油氣建井帶來了很大困難。 在文獻(xiàn)調(diào)研和大量研究的基礎(chǔ)上，本論文首先根據(jù)川東北河壩和元壩地區(qū)的地層特征，編寫了適用于該區(qū)的復(fù)雜巖性分 析程序，并對地層泥質(zhì)含量、孔隙度以及巖石的礦物成分和含量進(jìn)行了計算，建立了縱向的巖石體積剖面圖。再次，本文根據(jù)實測地層壓力分別反算出海陸兩相的伊頓經(jīng)驗系數(shù)并計算地層壓力，提高了計算精度，取得了很好的效果。在反算兩個構(gòu)造應(yīng) 力系數(shù)時，打破傳統(tǒng)認(rèn)為同一區(qū)塊構(gòu)造應(yīng)力系數(shù)不隨深度變化而變化的觀點，針對不同地質(zhì)層位分別對構(gòu)造應(yīng)力系數(shù)賦值，并展開基于測井資料的地應(yīng)力計算，計算結(jié)果與地應(yīng)力實測值對比進(jìn)一步驗證了選用該方法的正確性。 基于以上方法和模型， 利用 Fortran 語言編寫了地應(yīng)力綜合解釋程序，并運用該程序快速、準(zhǔn)確的完成了對研究工區(qū)多口井資料的處理，得到了相應(yīng)的地應(yīng)力縱向剖面圖。論文研究的成果對該區(qū)高效、安全建井和加快油氣勘探開發(fā)具有重要意義。 well logging 目 錄 摘 要 ......................................................................................................................................... I ABSTRACT ............................................................................................................................... II 第 1 章 緒論 .............................................................................................................................. 1 研究目的及意義 ......................................................................................................... 1 國內(nèi)外研究現(xiàn)狀 ......................................................................................................... 2 主要研究內(nèi)容及思路 ................................................................................................. 3 論文創(chuàng)新點 ................................................................................................................. 5 第 2 章 研究工區(qū)概況 .............................................................................................................. 6 川東北地區(qū)地質(zhì)概況 ................................................................................................. 6 川東北地區(qū)構(gòu)造特征 ...................................................................................... 6 川東北地區(qū)地層特征 .................................................................................... 12 川東北地區(qū)鉆井與測井概況 ................................................................................... 15 川東北 地區(qū)鉆井概況 ..................................................................................... 16 川東北地區(qū)測井概況 ..................................................................................... 17 第 3 章 川東北地區(qū)地層巖性剖面的建立 ............................................................................ 19 利用復(fù)雜巖性分析程序 計算孔隙度和巖性體積剖面 ........................................... 19 復(fù)雜巖性分析程序設(shè)計的基本思想及原理 ................................................. 19 復(fù)雜巖性分析程序計算孔隙度和巖性成分 ................................................ 22 利用復(fù)雜巖性分析程序計算泥質(zhì)含量 ................................................................... 24 計算泥質(zhì)含量的常用方法 ............................................................................ 24 復(fù)雜巖性分析程序計算泥質(zhì)含量 ................................................................ 26 實例分析 ................................................................................................................... 26 第 4 章 川東北地區(qū)巖石力學(xué)參數(shù)與地應(yīng)力實驗研究 .......................................................