CAJ | 학술논문

通过对新和地区三叠系岩性组合、沉积构造特征、粒度特征以及地震反射特征等综合研究，确定本区三叠系发育近岸水下扇及深水浊积扇两种类型的砂体。近岸水下扇以灰岩砾、粉砂岩砾以及泥砾组成，浊积扇砂见典型鲍马沉积序列，粒度分析也符合重力流沉积特征，地震反射为孤立存在的透镜状。以此为基础，建立了研究区三叠系近岸水下扇以及深水浊积扇的沉积模式。可见，本区三叠系具有两套可供勘探的目的层，发育多个近岸水下扇和深水浊积扇，并且具备优越的成藏条件，星火3井在两套扇体重均见到油气显示，说明本区三叠系具备良好的勘探潜力。
통과대신화지구삼첩계암성조합、침적구조특정、립도특정이급지진반사특정등종합연구，학정본구삼첩계발육근안수하선급심수탁적선량충류형적사체。근안수하선이회암력、분사암력이급니력조성，탁적선사견전형포마침적서렬，립도분석야부합중력류침적특정，지진반사위고립존재적투경상。이차위기출，건립료연구구삼첩계근안수하선이급심수탁적선적침적모식。가견，본구삼첩계구유량투가공감탐적목적층，발육다개근안수하선화심수탁적선，병차구비우월적성장조건，성화3정재량투선체중균견도유기현시，설명본구삼첩계구비량호적감탐잠력。
Based on the lithologic assemblage, sedimentary structure characteristics, size characteristics and seismic reflection profile in Triassic area of Xinhe , it is showed that the nearshore underwater fan and deep-water turbidite fan are existent. The nearshore underwater fan is composed of calcareous rock’s grav, siltstone’s grav and boulder clay, while turbidite fan developed Bouma sequence. The size analysis accorded with gravity flow, and the seismic reflection character was insulated and lenticular. The turbidite fan’s depositional models were summarized in study area of Triassic. Triassic of study area have two exploration targets, it developed a few of nearshore underwater fan and deep-water turbidite fan, and possessed superior reservoir forming conditions. And the indication of oil and gas was detected in XH3 well, which means the two exploration targets of Triassic in the study area may be highly prospective for the oil-gas exploration.