泌阳凹陷张厂地区E2h3Ⅳ砂组滩坝砂沉积学特征及勘探意义  

Sedimentary Character and Exploration of Beach Sandbar of E_2h_3Ⅳ Sand Group of Zhangchang Area in Biyang Depressionf

作　　者：吴群[1] 朱颜[1] 王树芳 张建光[3,4] 张正立 

机构地区：[1]中国石油化工股份有限公司河南油田分公司,河南南阳473132 [2]石油物探技术研究院,河南南阳473132 [3]中国石油大学华东石油工程学院,山东青岛266580 [4]中国地质大学构造与油气资源教育部重点实验室,武汉340074

出　　处：《地质科技情报》2014年第1期19-23,共5页Geological Science and Technology Information

基　　金：构造与油气资源教育部重点实验室开放基金项目(TPR-2012-16);高校人才引进基金项目(Y1202051)

摘　　要：张厂地区位于泌阳凹陷北部缓坡带中古城、王集两大鼻状构造翼部。其核桃园组三段滩坝砂是在北部缓坡这一单斜走向不断变迁背景下,浅水沉积砂体受到波浪与湖流的改造,在其前缘或侧翼再次沉积而成。通过对张厂地区岩心观察,结合粒度、测井等资料,得出坝砂、滩砂在沉积特征、微相类型存在明显区别。根据坝砂、滩砂多聚集发育特点,总结其不同时期的分布特征并最终建立了该地区滩坝砂沉积模式图。勘探实践表明:滩坝砂是一种物性好、易于成藏的储集体,具有较好的勘探前景。Zhangchang area is located on the northern slope of the Biyang Depression, the wings of Gucheng and Wangji nose structural. With the change of the monoclinic trend of the northern slop and in- fluenced by the waves and lake flow, the shallow sand deposited again in the front or flank of the slope, and then became beach sandbar during the sedimentary time of the member of Hetaoyuan Formation. Obvious differences between bar sands and beach sands in sedimentary characteristic and microfacies types were concluded based on the core observation, grain size data and well logging data of Zhangchang area. According to the characteristics of aggregation streams about bar sands and beach sands, we summerize the distribution characteristics in the different stage and then establish the sedimentary model for beach sand- bar in Zhangchang area. In the exploration practice, it shows that the beach sandbar has good exploration prospect for good physical properties and is easy for petroleum accumulation in these areas.

关 键 词：泌阳凹陷 张厂地区 滩坝砂 沉积学特征 

分 类 号：P618.130[天文地球—矿床学]