致密气储量计算方法研究
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摘要
致密砂岩气是我国非常重要的一类非常规油气资源,但针对致密气资源储量计算方法的相关规范或标准至今尚未出台。本文在简要对比非常规油气与常规油气资源评价方法基础上,对现阶段致密砂岩气资源评价方法进行讨论,针对致密砂岩气藏空间准连续分布、含气面积难确定、有效厚度与储层物性参数非均质性强的特点,认为利用不确定性的概率容积法计算致密砂岩气地质储量更为科学。以鄂尔多斯盆地康宁地区盒2段为例,利用地质统计学随机模拟算法计算得到P90(低)、P50(中)、P10(高)不同概率地质储量。按照完井时间顺序依次计算不同探井数时地质储量,发现地质储量计算结果与已钻井数有关,在达到饱和勘探点之前应采用不确定性概率容积法计算地质储量,降低勘探风险。利用不确定性概率容积法计算地质储量有利于致密砂岩气资源的健康有序勘探开发。
Tight sandstone gas is an important type of unconventional oil and gas resources,but industry standards or regulations for tight gas reserves estimation have not yet introduced.Based on a brief comparison of resource evaluation methods of unconventional and conventional oil and gas,and a discussion on tight sandstone gas resource evaluation methods at present,this paper puts forward an uncertainty volume method for tight gas resource estimation.Considering tight sandstone gas reservoirs'characteristics of quasi-continuous spatial distribution,difficulty in determining gas-bearing area,and the strong heterogeneity of the effective thickness and reservoir parameters,we argue that it's more reasonable to estimate tight gas geological reserves using uncertain probability volume method.Taking He-2 member in Kangning area of the Ordos basin as an example,by using geostatistics stochastic simulation,P90(low),P50(middle),P10(high)probability of different geological reserves are calculated based on volume method.The geological reserves are estimated in different exploration well numbers in accordance with the completion time order,which show that the reserves estimation results have been related to the drilled well number;for reducing exploration risk,the uncertain probability volume method should be used to calculate tight gas geological reserves before reaching the saturation exploration point.Using uncertain probability volume method to calculate geological reserve could facilitate the healthy and orderly exploration and development of tight sandstone gas resources.
Tight sandstone gas is an important type of unconventional oil and gas resources,but industry standards or regulations for tight gas reserves estimation have not yet introduced.Based on a brief comparison of resource evaluation methods of unconventional and conventional oil and gas,and a discussion on tight sandstone gas resource evaluation methods at present,this paper puts forward an uncertainty volume method for tight gas resource estimation.Considering tight sandstone gas reservoirs'characteristics of quasi-continuous spatial distribution,difficulty in determining gas-bearing area,and the strong heterogeneity of the effective thickness and reservoir parameters,we argue that it's more reasonable to estimate tight gas geological reserves using uncertain probability volume method.Taking He-2 member in Kangning area of the Ordos basin as an example,by using geostatistics stochastic simulation,P90(low),P50(middle),P10(high)probability of different geological reserves are calculated based on volume method.The geological reserves are estimated in different exploration well numbers in accordance with the completion time order,which show that the reserves estimation results have been related to the drilled well number;for reducing exploration risk,the uncertain probability volume method should be used to calculate tight gas geological reserves before reaching the saturation exploration point.Using uncertain probability volume method to calculate geological reserve could facilitate the healthy and orderly exploration and development of tight sandstone gas resources.
引文
[1]邹才能,张国生,杨智,等.非常规油气概念、特征、潜力及技术——兼论非常规油气地质学[J].石油勘探与开发,2013,40(4):385-399,454.
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[4]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.石油天然气资源/储量分类:GB/T19492—2004[S].2004.
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[6]中华人民共和国国家能源局.天然气可采储量计算方法:SY/T 6098—2010[S].2010.
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[8]中华人民共和国国土资源部.页岩气资源/储量计算与评价技术规范:DZ/T 0254—2014[S].2014.
[9]张金川,林腊梅,李玉喜,等.页岩气资源评价方法与技术:概率体积法[J].地学前缘,2012,19(2):184-191.
[10]马晓彬.中-低勘探程度区页岩气资源量计算方法研究[D].成都:成都理工大学,2013.
[11]张金川,金之钧,郑俊茂.深盆气资源量—储量评价方法[J].天然气工业,2001,21(4):32-35.
[12]郑志红,李登华,王志欣,等.我国重点盆地致密油气资源潜力[J].中国矿业,2017,26(8):22-29.
[13]郭丽彬,杨丽,宋阳.地质类比法在荆州油气聚集区油气资源评价中的应用[J].江汉石油科技,2005,15(3):7-9.
[14]袁波,朱建伟,刘招君.松辽盆地布海-合隆地区天然气烃源岩特征及资源量计算[J].世界地质,2003,22(4):352-356.
[15]李奕霏.普光地区须家河组天然气资源潜力评价[D].成都:成都理工大学,2014.
[16]金之钧,张金川.油气资源评价方法的基本原则[J].石油学报,2002,23(1):19-24.
[17]鲁雪松,杨文静,柳少波,等.塔里木盆地刻度区资源量计算方法比选[J].中国石油勘探,2014,19(5):41-48.
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[19]张金华,魏伟,钟太贤.国外页岩气资源储量评价方法分析[J].中外能源,2011,16(9):38-42.
[20]任茵.苏里格气田苏53区块天然气储量计算及其参数确定方法[J].天然气勘探与开发,2012,35(3):17-24.
[21]王向黎.储量技术在鄂尔多斯盆地北部山古生界天然气勘探开发中的应用[C]∥河南地球科学通报2009年卷(下册).2009:480-486.
[22]贾成业,贾爱林,邓怀群,等.概率法在油气储量计算中的应用[J].天然气工业,2009,29(11):83-85.
[23]鲁雪松,柳少波,李伟,等.低勘探程度致密砂岩气区地质和资源潜力评价——以库车东部侏罗系致密砂岩气为例[J].天然气地球科学,2014,25(2):178-184.
[24]王永祥,李建忠.非常规油气区带未开发储量评估指南[M].北京:石油工业出版社,2012.
[2]邹才能,杨智,朱如凯,等.中国非常规油气勘探开发与理论技术进展[J].地质学报,2015,89(6):979-1007.
[3]付金华,姚泾利,刘新社,等.鄂尔多斯盆地古生界天然气资源评价[R].西安:中国石油长庆油田公司,2010.
[4]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.石油天然气资源/储量分类:GB/T19492—2004[S].2004.
[5]中华人民共和国国土资源部.石油天然气储量计算规范:DZ/T 0217—2005[S].2005.
[6]中华人民共和国国家能源局.天然气可采储量计算方法:SY/T 6098—2010[S].2010.
[7]中华人民共和国国土资源部.煤层气资源/储量规范:DZ/T0216—2010[S].2010.
[8]中华人民共和国国土资源部.页岩气资源/储量计算与评价技术规范:DZ/T 0254—2014[S].2014.
[9]张金川,林腊梅,李玉喜,等.页岩气资源评价方法与技术:概率体积法[J].地学前缘,2012,19(2):184-191.
[10]马晓彬.中-低勘探程度区页岩气资源量计算方法研究[D].成都:成都理工大学,2013.
[11]张金川,金之钧,郑俊茂.深盆气资源量—储量评价方法[J].天然气工业,2001,21(4):32-35.
[12]郑志红,李登华,王志欣,等.我国重点盆地致密油气资源潜力[J].中国矿业,2017,26(8):22-29.
[13]郭丽彬,杨丽,宋阳.地质类比法在荆州油气聚集区油气资源评价中的应用[J].江汉石油科技,2005,15(3):7-9.
[14]袁波,朱建伟,刘招君.松辽盆地布海-合隆地区天然气烃源岩特征及资源量计算[J].世界地质,2003,22(4):352-356.
[15]李奕霏.普光地区须家河组天然气资源潜力评价[D].成都:成都理工大学,2014.
[16]金之钧,张金川.油气资源评价方法的基本原则[J].石油学报,2002,23(1):19-24.
[17]鲁雪松,杨文静,柳少波,等.塔里木盆地刻度区资源量计算方法比选[J].中国石油勘探,2014,19(5):41-48.
[18]杨通佑,范尚炯,陈元千,等.石油及天然气储量计算方法[M].北京:石油工业出版社,1998.
[19]张金华,魏伟,钟太贤.国外页岩气资源储量评价方法分析[J].中外能源,2011,16(9):38-42.
[20]任茵.苏里格气田苏53区块天然气储量计算及其参数确定方法[J].天然气勘探与开发,2012,35(3):17-24.
[21]王向黎.储量技术在鄂尔多斯盆地北部山古生界天然气勘探开发中的应用[C]∥河南地球科学通报2009年卷(下册).2009:480-486.
[22]贾成业,贾爱林,邓怀群,等.概率法在油气储量计算中的应用[J].天然气工业,2009,29(11):83-85.
[23]鲁雪松,柳少波,李伟,等.低勘探程度致密砂岩气区地质和资源潜力评价——以库车东部侏罗系致密砂岩气为例[J].天然气地球科学,2014,25(2):178-184.
[24]王永祥,李建忠.非常规油气区带未开发储量评估指南[M].北京:石油工业出版社,2012.