【摘要】：為推算克拉通盆地弱構(gòu)造變形區(qū)海相沉積期微幅度古地貌,提出了一種基于構(gòu)造趨勢(shì)面轉(zhuǎn)換的沉積期微幅度古地貌推算方法。方法假設(shè)克拉通盆地的多階段升降或扭轉(zhuǎn)構(gòu)造運(yùn)動(dòng)表現(xiàn)為構(gòu)造趨勢(shì)面的變動(dòng),但該變動(dòng)并沒有改變局部古高地與其周圍地形的擬構(gòu)造幅度。該方法的技術(shù)流程為,首先利用現(xiàn)今構(gòu)造圖及其趨勢(shì)面求得擬構(gòu)造幅度;然后將地層剝蝕線的平均走向近似于沉積期構(gòu)造趨勢(shì)面的走向,求得沉積期構(gòu)造趨勢(shì)面傾向;利用將今論古的思想借用現(xiàn)今潮坪相平均坡度作為沉積期構(gòu)造趨勢(shì)面的傾角;最后將沉積期構(gòu)造趨勢(shì)面與擬構(gòu)造幅度相加即得沉積期古地形圖。在此基礎(chǔ)上,結(jié)合取心井的巖石學(xué)、白云石化類型,可以更好地確定海相沉積體系中各亞相或微相的分布范圍。將此方法應(yīng)用于蘇里格氣田東區(qū)下奧陶統(tǒng)馬家溝組五段5亞段潮坪相碳酸鹽巖地層的應(yīng)用效果表明,研究區(qū)構(gòu)造趨勢(shì)面由NW—SE傾向變動(dòng)到NE—SW傾向,其并沒有改變沉積期局部古地貌與其周圍地形的相對(duì)高低關(guān)系,該方法能夠有效地刻畫出潮坪相沉積期微幅度古地貌。沉積期水下微幅度古地貌隆起部位是控制該區(qū)潮坪相碳酸鹽巖顆粒灘分布的關(guān)鍵因素,顆粒灘又是后期白云石化并發(fā)育為優(yōu)質(zhì)儲(chǔ)層最有利的微相。因此,在準(zhǔn)確刻畫沉積期微幅度古地貌的基礎(chǔ)上可以發(fā)現(xiàn)高產(chǎn)氣井。該方法可以為其他克拉通盆地弱構(gòu)造變形區(qū)沉積期古地貌研究提供有益的思路。
[Abstract]:In order to calculate the micro-amplitude paleogeomorphology of marine sedimentary period in weak tectonic deformation area of craton basin, a method of calculating micro-amplitude paleogeomorphology of sedimentary period based on structural trend surface transformation is proposed. Methods it is assumed that the multi-stage uplift or torsional tectonic movement of the craton basin is the change of the tectonic trend surface, but this change does not change the pseudotectonic amplitude of the local paleohighlands and their surrounding topography. The technical flow of this method is as follows: firstly, the pseudotectonic amplitude is obtained by using the present tectonic map and its trend surface, then the average strike of the strata denudation line is approximated to the strike of the sedimentary tectonic trend surface, and the tendency of the sedimentary tectonic trend surface is obtained. The present thought of ancient times is used to use the average gradient of the present tidal flat facies as the dip angle of the sedimentary tectonic trend surface, and finally the sedimentary paleotopographic map is obtained by adding the sedimentary tectonic trend surface with the pseudotectonic amplitude. On this basis, combining the petrology of coring wells and dolomitization types, the distribution range of subfacies or microfacies in marine sedimentary system can be better determined. The application of this method to the Chaoping carbonate strata of the 5th member of the Lower Ordovician Majiagou formation in the eastern part of Sulige gas field shows that the tectonic trend surface of the studied area has changed from NW-SE tendency to NE-SW tendency. It does not change the relative relationship between the local paleogeomorphology of sedimentary period and its surrounding topography. This method can effectively depict the micro-amplitude paleogeomorphology of tidal flat facies during sedimentary period. The subaqueous micro-range paleogeomorphic uplift is the key factor to control the distribution of tidal flat carbonate granular beach, which is the most favorable microfacies in late dolomitization and developed into high quality reservoir. Therefore, high-yield gas wells can be found on the basis of accurately depicting the paleogeomorphology of the sedimentary period. This method can provide useful ideas for the study of sedimentary paleogeomorphology in weak tectonic deformation areas of other craton basins.
【作者單位】： 中國(guó)石油大學(xué)石油工程教育部重點(diǎn)實(shí)驗(yàn)室;中國(guó)石油長(zhǎng)慶油田公司第五采氣廠;
【基金】：中國(guó)石油大學(xué)(北京)科研基金項(xiàng)目(2462015YQ0222)資助
【分類號(hào)】：P618.13;P531

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張立平，，王東坡;克拉通盆地形成機(jī)制及沉積特征[J];世界地質(zhì);1994年03期

2 匡立春，王東坡;克拉通盆地的綜合研究──成因與方法[J];世界地質(zhì);1995年04期

3 劉波,錢祥麟,王英華;克拉通盆地類型及成因機(jī)制綜述[J];地質(zhì)科技情報(bào);1997年04期

4 George de V.Klein Albert T.Hsui ,項(xiàng)才;克拉通盆地的成因[J];地質(zhì)科技情報(bào);1989年01期

5 孟祥化;葛銘;;《沉積建造學(xué)》講座 第五講 穩(wěn)定陸殼克拉通盆地的沉積建造(一)[J];巖相古地理;1990年04期

6 張同偉,王先彬,程學(xué)惠,申歧祥;克拉通盆地內(nèi)油氣微滲漏與淺層烴異常[J];科學(xué)通報(bào);1995年01期

7 何登發(fā);克拉通盆地的油氣地質(zhì)理論與實(shí)踐[J];勘探家;1996年01期

8 孟祥化;;《沉積建造學(xué)》講座 第六講 穩(wěn)定陸殼克拉通盆地的沉積建造(二)[J];巖相古地理;1990年05期

9 George D.Klein;李紅;;北美克拉通盆地的形成作用及其演化[J];世界地質(zhì);1993年01期

10 C. Bois;P. Bouche;R. Pelet;李培廉;許薇玲;;全球地質(zhì)史與油氣儲(chǔ)量的分布(續(xù))[J];海洋地質(zhì)譯叢;1983年05期

相關(guān)會(huì)議論文 前1條

1 楊曉萍;劉桂俠;;我國(guó)中部克拉通盆地中生界低滲透儲(chǔ)層成因機(jī)理分析及研究方法探討[A];2002低滲透油氣儲(chǔ)層研討會(huì)論文摘要集[C];2002年

相關(guān)博士學(xué)位論文 前4條

1 黃福喜;中上揚(yáng)子克拉通盆地沉積層序充填過程與演化模式[D];成都理工大學(xué);2011年

2 胡少華;塔里木盆地早古生代克拉通盆地志留紀(jì)沉積層序及油氣系統(tǒng)[D];中國(guó)地質(zhì)大學(xué)（北京）;2007年

3 許華明;冀南地區(qū)克拉通中新生代構(gòu)造及現(xiàn)今發(fā)震構(gòu)造研究[D];中國(guó)地震局地質(zhì)研究所;2008年

4 陳安清;鄂爾多斯地塊早古生代盆地演化與物質(zhì)聚集規(guī)律[D];成都理工大學(xué);2010年

本文編號(hào)：2427499