黄沙坨油田储量复算研究
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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.
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.
引文
[1]马志宏.黄沙坨地区火山岩储层研究及预测[J].断块油气田,2003,10(3):5-8.
[2]舒萍,刘启,刘玉萍.低渗透复杂砂岩气藏开发与储量复算[J].天然气勘探与开发,2004,27(2):31-35.
[3]曹海丽.黄沙坨油田火山岩油藏特征综合研究[J].特种油气藏,2003,10(1):62-65.
[4]于海山.火山岩油气储层形成机理及有效储层分布规律分析[J].油气减评价与开成,2013,3(5):24-29.
[5]陈蓉,王亚,吕亚辉,等.精细储层预测技术在兴9砾岩体储量复算中的应用[J].中国石油勘探,2013,18(6):74-79.
[6]梁浩,高成全,罗权生,等.三塘湖油田牛东区块石炭系火山岩油藏储量参数研究[J].吐哈油气,2009,14(4):301-306.
[7]马强.黄沙坨火山岩油藏递减规律及影响因素研究[J].吐哈油气,2010,15(3):283-285.
[8]印长海,朱彬,李红娟.徐深气田火山岩气藏储量参数计算[J].天然气工业,2009,29(8):86-88.
[9]廖周川,陈元春,张新培,等.利用测井技术识别黄沙坨地区火山岩储层[J].特种油气藏,2003,10(1):66-68.
[10]孙红,马继明,赵立芬,等.松辽盆地南部长岭断陷火山岩气藏储量评价与计算[J].中国石油勘探,2009,1(4):47-52.
[2]舒萍,刘启,刘玉萍.低渗透复杂砂岩气藏开发与储量复算[J].天然气勘探与开发,2004,27(2):31-35.
[3]曹海丽.黄沙坨油田火山岩油藏特征综合研究[J].特种油气藏,2003,10(1):62-65.
[4]于海山.火山岩油气储层形成机理及有效储层分布规律分析[J].油气减评价与开成,2013,3(5):24-29.
[5]陈蓉,王亚,吕亚辉,等.精细储层预测技术在兴9砾岩体储量复算中的应用[J].中国石油勘探,2013,18(6):74-79.
[6]梁浩,高成全,罗权生,等.三塘湖油田牛东区块石炭系火山岩油藏储量参数研究[J].吐哈油气,2009,14(4):301-306.
[7]马强.黄沙坨火山岩油藏递减规律及影响因素研究[J].吐哈油气,2010,15(3):283-285.
[8]印长海,朱彬,李红娟.徐深气田火山岩气藏储量参数计算[J].天然气工业,2009,29(8):86-88.
[9]廖周川,陈元春,张新培,等.利用测井技术识别黄沙坨地区火山岩储层[J].特种油气藏,2003,10(1):66-68.
[10]孙红,马继明,赵立芬,等.松辽盆地南部长岭断陷火山岩气藏储量评价与计算[J].中国石油勘探,2009,1(4):47-52.