發(fā)布時間：2018-04-17 00:06

  本文選題：火山巖 + 火山通道��； 參考：《特種油氣藏》2017年01期

【摘要】：為探討渤海海域沙東地區(qū)火山活動規(guī)律,以相對易識別的火山通道相為研究對象,利用沙東A區(qū)三維地震資料和少量鉆井資料,采用構(gòu)型解剖的方法,分析了火山通道相形態(tài)特征、活動期次及展布規(guī)律。結(jié)果顯示:火山通道由上部錐形體和下部管體2部分組成,上部錐形體可識別出底面、頂面和內(nèi)部充填3個構(gòu)型要素;根據(jù)地層接觸關(guān)系,頂面可以分為上超型、發(fā)散型和整一型3種;底面主要為削截型;內(nèi)部充填主要包括塊狀充填和似層狀充填2種。利用沉積作用對巖漿活動的響應(yīng)特征來分析通道相的活動期次,總結(jié)出地層接觸關(guān)系和上覆地層厚度變化2種期次判別的標準,并識別出3期火山活動。館陶組火山主要為裂隙式噴發(fā),火山通道沿斷裂帶呈串珠狀展布。受NNE向的郯廬斷裂和NWW向的張蓬斷裂帶雙走滑共軛剪切影響,工區(qū)館陶組時期斷層活動較為強烈,熱地幔柱也比較活躍,形成了該區(qū)多期巖漿噴發(fā)事件。該研究可為沙東地區(qū)火山巖油氣勘探提供一定借鑒和指導(dǎo)。
[Abstract]:In order to study the regularity of volcanic activity in Shadong area of Bohai Sea, taking the relatively recognizable volcanic passageway facies as the research object, using 3D seismic data and a small amount of drilling data in Shadong A area, the method of configuration anatomy is adopted.The characteristics of phase morphology, activity periods and distribution of volcanic channels are analyzed.The results show that the volcanic passage is composed of two parts: the upper cone body and the lower tube body. The upper cone body can identify the bottom surface, the top surface and the inner filling, and the top surface can be classified into the upper supertype according to the stratigraphic contact relationship.There are three types of divergence type and integral type; the bottom surface is mainly truncated type; the internal filling mainly includes massive filling and laminar filling.Based on the characteristics of sedimentary response to magmatic activity, the active periods of channel facies are analyzed, and the criteria for distinguishing stratigraphic contact relationship and overlying strata thickness change are summarized, and three periods of volcanic activity are identified.Guantao formation volcanoes are mainly fissured eruptions, and the volcanic channels are beaded along the fault zone.Influenced by the Tan-Lu fault in the direction of NNE and the conjugate shear of the double strike-slip in the Zhangpeng fault zone in the NWW direction, the fault activity of Guantao formation is relatively strong and the hot mantle plume is active in the working area during the period, resulting in multiple magmatic eruptions in this area.This study can be used for reference and guidance for oil and gas exploration of volcanic rocks in Shadong area.
【作者單位】： 中海石油(中國)有限公司天津分公司;
【基金】：國家科技重大專項“近海隱蔽油氣藏勘探技術(shù)”(2011ZX05023-002)
【分類號】：P618.13

【參考文獻】

相關(guān)期刊論文 前9條

1 張斌;王璞s，

本文編號：1761165