黄沙坨油田储量复算研究  

Research on the Reserves Recalculation of Huangshatuo Oilfield

作　　者：张宇[1] 

机构地区：[1]中国石油辽河油田分公司金马油田开发公司,辽宁盘锦124010

出　　处：《非常规油气》2016年第6期26-30,共5页Unconventional Oil & Gas

摘　　要：针对黄沙坨油田开发数据与上报储量不匹配的问题,开展了储量复算必要性分析,并加强地质和储量计算参数研究,修正地质认识、找出影响储量变化的主要参数,从而对该区地质储量及可采储量进行复算。结果表明：该区火山岩储层分布复杂,储量上报时火山岩地质认识存在局限,后期钻井揭示的储层厚度和有效厚度与早期认识差别较大,导致储量计算结果存在偏差,有必要进行复算。计算参数中有效孔隙度、含油饱和度、原油体积系数、原油密度都与上报储量基本没有差异,而含油面积和有效厚度变化较大,分别减少了30.5%和24.4%。复算后,地质储量由2171×10~4t减为1121.73×10~4t,预测可采储量为147.97×10~4t,采收率为13.2%,地质储量减少导致可采储量减少。研究成果对油田下步开发策略制订和同类油藏储量复算具有一定指导意义。Due to the development data of Huangshatuo oilfield was not matched with that of reported reserves,the necessity analysis of reserve recalculation has been carried out,and found out the main parameters affecting the change of reserves,by means of strengthening the research of geological body and the parameter of reserve,and revising the understanding of geological regularity,so as to calculate the geological reserves and technical recoverable reserves of the area again. Results showed that the distribution of volcanic reservoir was complex in this area,there was limitation in the understanding of volcanic rock geological bodies when reporting the reserves at early stage,and existed great difference between original knowledge and that of proven reservoir thickness and effective thickness by drilling in later stage,which may lead to the calculating errors of reserves,so it is necessary to calculate the reserves again. Calculation parameters as effective porosity,oil saturation,volume factor,crude oil density and reported reserves are basically no difference,but the oil area and the effective thickness have great change,i. e. they are reduced by 30. 5% and 24. 4% respectively,which lead to the recalculated geological reserve reduced from 2171×10~4t to 1121. 73×10~4t. The technical recoverable reserves and recovery rate are predicted as 147. 97×10~4t and 13. 2% respectively,the main reason for the decrease of recoverable reserves is attributed to the decrease of geological reserves. The research results are significant for making development strategy and recalculating the reserves in similar oil reservoir in the future.

关 键 词：黄沙坨油田 火山岩油藏 裂缝性 储量复算 

分 类 号：TE15[石油与天然气工程—油气勘探]