济阳坳陷古近系陆相页岩油产量的影响因素

doi:10.11743/ogg20150315

Abstract

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

CLC Number:

TE121.3

Song Guoqi, Xu Xingyou, Li Zheng, Wang Xiuhong. Factors controlling oil production from Paleogene shale in Jiyang depression[J]. Oil & Gas Geology, 2015, 36(3): 463-471.

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Factors controlling oil production from Paleogene shale in Jiyang depression

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