济阳坳陷古近系陆相页岩油产量的影响因素

doi:10.11743/ogg20150315

摘要/Abstract

摘要： 济阳坳陷古近系沙河街组泥页岩发育段有35口井获得了工业油气流，主要产层为沙三下亚段和沙四上亚段，以产页岩油为主。利用分析测试实验、录井、试油及测井资料，分析了影响页岩出油量的地质因素。研究表明，影响陆相页岩出油量的地质因素比较复杂，“甜点”的选取需要综合考虑各种地质要素，其中高丰度有机质含量是页岩油气富集的物质基础，有机质成熟度影响了页岩油气的量和相态，高有机质丰度的纹层状泥质灰岩和灰质泥岩相是页岩油气发育的有利岩相，异常高压影响页岩油气的富集与产出，夹层的分布、裂缝发育和流体流动性是页岩油气局部性富集高产的控制因素。

关键词: 有机质丰度, 异常高压, 页岩油, 沙河街组, 古近系, 济阳坳陷

Abstract: Industrial flow was obtained from 35 wells in Shahejie Formation of Paleogene shale in Jiyang Depression.The lower Es³ and upper Es⁴ were the major producing layers producing mostly shale oil.Lab analyzing results as well as well testing and logging data were used to study the geological factors that controlled oil production rates. It shows that factors controlling the production are complicated and a wise picking of sweet spots shall be based on various geological eletments, among which high TOC content is the material base for shale oil and gas to accumulate, matruity of organic matter controlled quantity and phase of the oil and gas, lamillar muddy limestone and lime mudstone with high content of organic matter are perfect home for oil land gas to gather, abnormal high pressure affected accumulation and production of shale oil and gas, and the distribtuion of interlayers, fractures growth as well as fluid flowability controoled the flow rates attainable from local shale oil and gas accumulations.

Key words: organic matter richness, abnormal high pressure, shale oil, Shahejie Formation, Paleogene, Jiyang Depression

中图分类号:

TE121.3

宋国奇,徐兴友,李政,等. 济阳坳陷古近系陆相页岩油产量的影响因素[J]. 石油与天然气地质, 2015, 36(3): 463-471. doi: 10.11743/ogg20150315 Song Guoqi,Xu Xingyou,Li Zheng,et al. Factors controlling oil production from Paleogene shale in Jiyang depression[J]. Oil & Gas Geology, 2015, 36(3): 463-471. doi: 10.11743/ogg20150315

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