CAJ | 학술논문

塔中低凸起作为古生代形成的凸起,是油气运移聚集的有利指向区,研究其构造变形特征对油气勘探具有重要的意义.应用地震和钻井资料,在地震资料解释和分层构造复原基础上,研究认为:(1) 除塔中Ⅰ号断裂带部分段为基底卷入式外,塔中低凸起主要逆冲断裂以滑脱式为主,主逆冲断裂多在中、下寒武统膏盐层系滑脱;(2) 盐上地层变形特征与盐下地层变形特征不同,盐上地层构造变形强度总体上大于盐下地层构造变形强度;(3) 膏盐层系在分层构造变形过程中起到协调变形作用;(4) 塔中低凸起分层构造变形主要受控于俯冲造山及膏盐层系滑脱作用.
탑중저철기작위고생대형성적철기,시유기운이취집적유리지향구,연구기구조변형특정대유기감탐구유중요적의의.응용지진화찬정자료,재지진자료해석화분층구조복원기출상,연구인위:(1) 제탑중Ⅰ호단렬대부분단위기저권입식외,탑중저철기주요역충단렬이활탈식위주,주역충단렬다재중、하한무통고염층계활탈;(2) 염상지층변형특정여염하지층변형특정불동,염상지층구조변형강도총체상대우염하지층구조변형강도;(3) 고염층계재분층구조변형과정중기도협조변형작용;(4) 탑중저철기분층구조변형주요수공우부충조산급고염층계활탈작용.
Tazhong lower uplift forming during Paleozoic was a favorable area for hydrocarbon migration and accumulation, so its very important to study the structural distortion character for petroleum exploration. Based on seismic and well data, seismic interpretation and restoration of balanced cross-sections were carried out, and the results indicate: (1) Besides basement involvement structures in the part segment of No.1 fault, the faults were dominated by detachment faults which formed in Middle-Lower Cambrian salt layers. (2) The deformation styles were different in the upon and underneath salt layers, and the distortion was stronger in the upon salt layer than that in the underneath salt layer. (3) The stratified deformation was coordinated by salt layers. (4) The stratified deformation was controlled by both subduction orogeny and decollement of salt layers.