南华北盆地太康隆起西部新区上古生界天然气成藏条件与钻探发现

发布时间：2018-04-25 06:07

本文选题：南华北盆地 + 太康隆起　；参考：《天然气地球科学》2017年11期

【摘要】：南华北盆地是我国东部重要的油气远景区之一,历经多年勘探,但始终没有工业性突破。以地震和钻井等资料综合分析为基础,以上古生界油气为主要目的层,综合考虑太康隆起油气地质条件,重点考虑保存条件,同时参考烃源岩及储层条件,可将太康隆起西部地区重新划分为5个次级单元,即:北部斜坡带、中部鼻状构造带、尉氏—薛店南次凹带、通许凸起和新郑凸起。太康隆起西部上古生界残存分布面积广、厚度大,埋藏深度适中,三叠系残存较为完整,构造整体比较稳定,圈闭发育,具备早期生烃的保存和成藏条件。从中优选出庄头断鼻部署实施钻探,在上古生界发现气测异常69段,累计厚度为81.3m,气测异常全烃最大值为24.1%;测井综合解释致密气7层,累计厚度为41.6m,其中厚度超过7m的单层为4层;页岩气层9层,累计厚度为72.3m,其中最大单层厚度为28.4m,进一步展示了太康隆起西部新区天然气的勘探前景,对推进南华北地区海陆交互相天然气资源调查和评价具有重要意义。
[Abstract]:The South North China Basin is one of the important oil and gas scenic spots in the east of China. Based on the comprehensive analysis of seismic and drilling data, the above Paleozoic oil and gas are considered as the main target zones, the oil and gas geological conditions of Taikang uplift are considered comprehensively, the preservation conditions are emphatically considered, and the source rocks and reservoir conditions are also referred to. The western area of Taikang uplift can be divided into five sub-units, namely, the northern slope belt, the middle nasal structural belt, the Weish-Xuadian subconcave zone, the Tongxu uplift and the Xinzheng uplift. The Upper Paleozoic remains in the western Taikang uplift have a wide distribution area, a large thickness, a moderate burial depth, a relatively complete Triassic system, a relatively stable structure and a developed trap, and have the conditions for the preservation and accumulation of early hydrocarbon generation. Zhuangtou fault nose was selected from Zhongyou to carry out drilling, 69 gas anomalies were found in Upper Paleozoic, the accumulative thickness was 81.3 m, the maximum value of total hydrocarbon in gas logging anomaly was 24.1.The comprehensive interpretation of 7 tight gas layers by logging, The accumulative thickness is 41.6 m, of which 4 layers are single layer with thickness more than 7 m, 9 layers of shale gas layer with accumulative thickness of 72.3 m, of which the maximum single layer thickness is 28.4 m, which further shows the prospect of natural gas exploration in the western new area of Taikang uplift. It is of great significance to promote the investigation and evaluation of the natural gas resources between the sea and the land in the South North China.
【作者单位】：中国地质调查局油气资源调查中心;中国石化河南油田分公司勘探开发研究院;中国石油化工股份有限公司华北分公司;中国地质科学院;
【基金】：“大型油气田和煤层气开发”国家科技重大专项任务“南华北地区海陆交互相页岩气勘查评价应用试验”(编号:2016ZX05034004-006) 地质调查项目“南华北盆地油气资源战略调查”(编号:1211302108023) 国家自然科学基金项目“合肥盆地侏罗—白垩纪沉积层序及其对周缘隆起的差异响应”(编号:D0206-41372123)联合资助
【分类号】：P618.13

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