齐波夫天然气储量预测法在川东地区的应用探讨
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摘要
川东地区石炭系和三叠系飞仙关组鲕滩储层在部分地区勘探程度较高,经统计表明,地质静、动态相近的某一储层连片区块内,其储量数与大小排序符合齐波夫定律。用齐波夫方法估算那些目前处于“单身”气藏周边相关联圈闭的储量后,结合已有的地震、地质等资料,能够分析寻找到新的钻探目标。文章从引用的预测方法入手,列举了川东地区几个储层连片区块内(石炭系或飞仙关组)气田已探明的储量,以地质分析为前提,预测到铁山坡已获储量区块的外围、南门场构造主体北段仍存有可观储量,沙坪场、西河口、高峰场邻近石炭系还存在勘探有利目标。估算川东开江—梁平海槽东北侧飞仙关组储层连片区前十名气藏的储量之和将超过3200×108m3。
The oolitic beach reservoirs of Carboniferous and Triassic Feixianguan group have high exploration level in some regions. Stat istics show the rank of reserves and sizes fits Zipfs law in a reservoir-connec ting block, which has similar geological static and dynamic states. After the re serves of the associated traps around the recent “single” gas reservoir are es timated by Zipfs method, integrating the available seismic and geologic data, th e new drilling targets can be found. Taking the certified reserves of the gas fi elds of Carboniferous and Feixianguan group in several reservoir-connecting blo cks of east Sichuan area as examples, the introduced prediction method is demons trated. Based on geological analysis, it is predicted there are rather more rese rves in the skirt of Tieshanbo block where reserves are found and the north sect ion of Nanmenchang main structural body. There are still favor targets of explor ation in Carboniferous near Shapingchang, Xihekou and Gaofengchang. It is estima ted the reserve amount of the first ten ranks of gas reservoirs will exceed 320 BCM in the reservoir-connecting blocks of Feixianguan group in the northeast si de of Kaijiang-Liangping marine geosyncline of east Sichuan.
The oolitic beach reservoirs of Carboniferous and Triassic Feixianguan group have high exploration level in some regions. Stat istics show the rank of reserves and sizes fits Zipfs law in a reservoir-connec ting block, which has similar geological static and dynamic states. After the re serves of the associated traps around the recent “single” gas reservoir are es timated by Zipfs method, integrating the available seismic and geologic data, th e new drilling targets can be found. Taking the certified reserves of the gas fi elds of Carboniferous and Feixianguan group in several reservoir-connecting blo cks of east Sichuan area as examples, the introduced prediction method is demons trated. Based on geological analysis, it is predicted there are rather more rese rves in the skirt of Tieshanbo block where reserves are found and the north sect ion of Nanmenchang main structural body. There are still favor targets of explor ation in Carboniferous near Shapingchang, Xihekou and Gaofengchang. It is estima ted the reserve amount of the first ten ranks of gas reservoirs will exceed 320 BCM in the reservoir-connecting blocks of Feixianguan group in the northeast si de of Kaijiang-Liangping marine geosyncline of east Sichuan.
引文
1 卢双舫等.齐波夫方法在天然气预测中的应用.天然气工业;2004;24(4):13~14
2 范明祥主编.四川油气勘探典型范例.北京:石油工业出版社,2003
3 王罗兴,谢芳等.川东北飞仙关组鲕滩气藏地震响应特征及勘探展望.天然气工业,2000;20(5):26~28
4 王一刚,刘划一等.川东北飞仙关组鲕滩储层分布规律、勘探方法与远景预测.天然气工业,2002;(增刊):14~19
5 刘晓东,徐景祯.截断帕雷托分布模型在油气资源评价中的应用.天然气工业,1999;19(2):36~38
2 范明祥主编.四川油气勘探典型范例.北京:石油工业出版社,2003
3 王罗兴,谢芳等.川东北飞仙关组鲕滩气藏地震响应特征及勘探展望.天然气工业,2000;20(5):26~28
4 王一刚,刘划一等.川东北飞仙关组鲕滩储层分布规律、勘探方法与远景预测.天然气工业,2002;(增刊):14~19
5 刘晓东,徐景祯.截断帕雷托分布模型在油气资源评价中的应用.天然气工业,1999;19(2):36~38
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