本文選題：曲堤 + 斷鼻��； 參考：《地質(zhì)科技情報》2017年03期

【摘要】：曲堤斷鼻是濟陽坳陷一個大型中淺層富油斷鼻構(gòu)造,受張、扭、拱應(yīng)力復(fù)合作用形成。古近紀以來NW向拉張應(yīng)力和NE向右旋走滑扭應(yīng)力持續(xù)作用使其在基底鼻形背景上形成NE走向的"兩階兩壘夾一塹"構(gòu)造格局,古近紀晚期以來疊加的基底塊體差異性拱張又使其形成NW向地壘型"鼻脊帶"。不同應(yīng)力機制對油氣有不同控制作用,張應(yīng)力作用下斷鼻主體區(qū)斷層活動弱但油氣豐度高,東西兩翼斷層活動強但油氣豐度低;扭應(yīng)力作用下斷層壓扭段附近油氣富集,張扭段附近含油性變差;拱張應(yīng)力作用使油氣作垂向大幅疏導(dǎo)從而形成系列新斷塊圈閉并形成"鼻脊區(qū)"最有利聚油場所。斷鼻內(nèi)不同構(gòu)造部位因應(yīng)力作用不同從而形成不同構(gòu)造單元并具有不同含油氣豐度特征,約95%已探明儲量賦存于張扭形成的"兩壘夾一塹"斷鼻主體區(qū)內(nèi),其中近60%已探明儲量又富集于基底上拱"鼻脊區(qū)",顯示構(gòu)造高部位是控油的主要因素。
[Abstract]:Qudike fault nose is a large middle and shallow oil-rich fault nose structure in Jiyang depression, which is formed by the combination of tension, torsion and arch stress. Since Paleogene, NW tensile stress and NE direction dextral strike-slip torsional stress have resulted in the formation of a "two order, two barrier and one graben" tectonic pattern with NE strike on the background of the base nose. The differential arch extension of the superimposed basement blocks since the late Paleogene resulted in the formation of NW-trending "nasal ridge belt". Different stress mechanisms have different controlling effects on oil and gas. Under the action of tensile stress, fault activity is weak but oil and gas abundance is high in the main fault area of the fault nose, and the fault activity is strong but the hydrocarbon abundance is low in the east and west flanks, and oil and gas are enriched near the compression and torsion section of the fault under the action of torsional stress. The oil content in the vicinity of the tensional and torsional section is poor, and the arched stress causes the oil and gas to be greatly dredged vertically, thus forming a series of new fault block traps and forming the most favorable oil accumulation site in the "nasal ridge". Different structural parts in the fault nose form different structural units and have different oil and gas abundance due to the different stress action. About 95% of the proven reserves are located in the "two barriers and one cut" fault nose main area formed by the tensional and torsional formation, and about 95% of the proven reserves are located in the main body of the fault nose. Nearly 60% of the proven reserves are concentrated in the "nasal ridge" of the upper arch of the basement, indicating that the high structure is the main factor of oil control.
【作者單位】： 中國石化勝利油田魯明油氣勘探開發(fā)有限公司;中國地質(zhì)大學(武漢);中國石油大學(華東);
【分類號】：P618.130.2

【相似文獻】

相關(guān)期刊論文 前3條

1 高勇;;濱海斷鼻沙三段油氣成藏特征研究[J];內(nèi)蒙古石油化工;2014年13期

2 郭金鳳;李洪香;蘇俊青;付東立;李會慎;楊冰;;濱海斷鼻沙三段油氣成藏特征[J];天然氣地球科學;2010年04期

3 ;[J];;年期

，

本文編號：2057534