CAJ | 학술논문

印支期—燕山早期的挤压逆冲使潜山构造抬升，石炭系—二叠系遭受剥失后，奥陶系长期遭受风化淋滤。由挤压逆冲形成的高角度裂缝和风化淋滤形成的粒间孔、溶蚀孔洞组成潜山储层的主要储集空间。钻井岩样由于地层静压力的降低而导致总体积发生膨胀。岩石骨架的压缩系数小，围压的释放主要导致岩石孔、缝隙空间的扩大，因此，在测算地下原始孔、缝隙度时应考虑地层静压力。我们测得的奥陶系潜山储层的综合空隙度为4.7％。以空隙度为主要评价指标，划分出四级储层，其中Ⅰ、Ⅱ级储层是本区储产能力最强的储层，能够获得稳定的高产油气。
인지기—연산조기적제압역충사잠산구조태승，석탄계—이첩계조수박실후，오도계장기조수풍화림려。유제압역충형성적고각도렬봉화풍화림려형성적립간공、용식공동조성잠산저층적주요저집공간。찬정암양유우지층정압력적강저이도치총체적발생팽창。암석골가적압축계수소，위압적석방주요도치암석공、봉극공간적확대，인차，재측산지하원시공、봉극도시응고필지층정압력。아문측득적오도계잠산저층적종합공극도위4.7％。이공극도위주요평개지표，화분출사급저층，기중Ⅰ、Ⅱ급저층시본구저산능력최강적저층，능구획득은정적고산유기。
In the Indosinian and early Yanshanian orogenies, the buried hill structure rose because of compression and thrusting. After the Carboniferous and Permian had been peeled, the Ordovician was weathered and leached for a long time. The compressed and thrust high-angle crevice, the weathered and leached interparticle aperture and solution cave are the main space for the reservoir. With the abasing of the stratum static load, the bulk of the core sample come into expansion. Because the compressibility factor of the rock skeleton is small, the interstitical pore space is larger. Therefore, the measure pressure of original porosity and interstitical ratio on the surface must be equal to downhole pressure. The static pressure of the reservoir bed is 45 MPa. Finally, the measured comprehensive voidage is 4.7%. They are divided into 4 level reservoir beds. Among them the Ⅰ and Ⅱ level beds are the strongest reservoirs for oil-gas storage and production in the region. They can obtain smooth high-capacity oil and gas.