CAJ | 학술논문

塔中北斜坡奥陶系碳酸盐岩蕴含着丰富的油气资源，但油气藏类型复杂多样，按照PVT和流体组分可以划分为油藏、挥发性油藏和凝析气藏3种类型，三者在空间上分布复杂。通过对塔中北斜坡西部平台区大量单井及其生产状况的解剖，结合分析化验和地震资料，深入探讨了本区流体分布和性质特征、断裂和储层差异，揭示了造成油气分布差异性的主控因素。认为奥陶系良里塔格组良三段顶部的不整合面在垂向上控制了储层层位和储层规模，储层在横向上的强非均质性是油气平面分布差异的重要原因；走滑断裂作为油气运移通道对储层改造明显，直接决定了不同区域的古油藏在晚喜马拉雅期遭受的气侵强度，是目前本区油气藏相态多样性和性质差异的直接原因。
탑중북사파오도계탄산염암온함착봉부적유기자원，단유기장류형복잡다양，안조PVT화류체조분가이화분위유장、휘발성유장화응석기장3충류형，삼자재공간상분포복잡。통과대탑중북사파서부평태구대량단정급기생산상황적해부，결합분석화험화지진자료，심입탐토료본구류체분포화성질특정、단렬화저층차이，게시료조성유기분포차이성적주공인소。인위오도계량리탑격조량삼단정부적불정합면재수향상공제료저층층위화저층규모，저층재횡향상적강비균질성시유기평면분포차이적중요원인；주활단렬작위유기운이통도대저층개조명현，직접결정료불동구역적고유장재만희마랍아기조수적기침강도，시목전본구유기장상태다양성화성질차이적직접원인。
There is abundant hydrocarbon in the carbonatite of Tazhong northern slope of Tarim Basin,and there are compli-cated and multiple reservoir types in this area,which can be divided into three types by PVT and fluid component:oil reservoir, volatile oil reservoir and condensate reservoir. By analyzing production performances of mass wells,seismic data as well as testing data and discussing the distribution of fluids,faults and reservoir,oil/gas distribution difference and its main dominating factors were revealed. The weathered crust unconformity developed in the top of O1l3 controlled the reservoir depth and reser-voir thickness vertically;the reservoir horizontal inhomogeneity is the important reason for the differential oil/gas distribution. The strike-slip faults as migration pathway have obvious reformation to reservoir,which decides the gas cutting intensity of different fossil reservoirs in late Himalayan and the different phase reservoirs distribution,and this is the immediate cause for the multiple reservoir types and the complicated fluid characteristics in this area.