松辽盆地北部不同类型干酪根氧化产物中有机酸成分分析及对储层结构影响研究

ANALYSIS ON ORGANIC ACID COMPOSITION IN THE OXIDIZED PRODUCTS OF DIFFERENT TYPED KEROGENS IN THE NOKTH SONGLIAO BASIN ANDSTUDY OF ITS EFFECTS ON RESERV OIR STRUCTURE

黄福堂 邹信芳 姜洪启 张作祥 王建贵

Huang Futang Zou Xinfang Jiang Hongqi Zhang Zuoxiang Wang Jiangui

大庆石油管理局勘探开发研究院, 黑龙江, 大庆, 163712

Research Institute of Petroleum Exploration and Development, Daqing Bureau of Petroleum Administration

本文通过大量的室内试验,建立了干酪根氧化试验和氧化产物中有机酸的分析方法。并首次对松辽盆地北部三肇地区不同类型干酪根进行研究,通过时3口井54块岩心不同浓度有机酸浸泡液中各种离子进行检测,同时对岩石物性、孔隙结构变化特征分析与研究发现,①不同类型干酪根氧化产率具有明显的不同;②有机酸的存在对储层次生扎隙发育起着重要的作用,这些实验研究对次生孔隙成因研究有初步的认识,为今后寻找次生扎隙发育地区提供了重要的科学依据。

The analytical method of organic acids in the oxidation tests and oxidized products of kerogens is set up on the basis of a large number of indoor conditional tests.And for the first time,different typed kerogens from the Sanzhao area of the North Songliao Basin are studied using this method.By means of detecting on various ions in different comcentration of the organic acid-soaked solution of fifty-four cores from three wells and analysing and studing meanwhile on the physical properties of rocks and the changing characteristics ofpore structure,it is found that 1)different typed kerogens have clearly different oxidation yields,and 2)the existeiice of organic acids plays an important role in the developing ofthe secondary pore space of reserviors.These experimental studies give us a preliminary understanding of the genesis of secondary pore space and provicle an important scientific basis for searching the developing areas of secondary pore space in future.

https://doi.org/10.11781/sysydz199502156