张鹏豹,李凡异,杨童,韩峰,高歌,张晨
ZHANG Pengbao,LI Fanyi,YANG Tong,HAN Feng,GAO Ge,ZHANG Chen

• 1:中国石油华北油田分公司勘探开发研究院
• 2:中国海油研究总院有限责任公司
• 3:北京奥能恒业能源技术有限公司

摘要(Abstract)：

吉尔嘎朗图凹陷白垩系的赛汉塔拉组煤层为含气量较低的低煤阶褐煤,寻找含气量相对高的"甜点区"是该地区优化钻井部署所面临的难点。针对该区沉积环境复杂、煤层厚度横向变化大等特点,动态正演模拟分析了煤层的含气性、厚度以及顶板岩性对煤层AVO的影响,总结AVO的响应特征和AVO属性的变化规律,判定AVO烃类检测的可行性和适用条件。结果表明,P+G属性烃类检测效果与实际钻井含气量和累计产气量的吻合率达到75%以上,利用该属性并结合区域地质认识,指出了有利的勘探方向。
Cretaceous Saihantala-Formation coal seam in Jiergalangtu Sag is low-rank lignite with rather lower gas content and it is difficult to find sweet spot with relatively high gas content for optimizing the drilling deployment in this area. In view of the characteristics of the complex sedimentary environment and large lateral variation of the coal seam thickness in this area, the influences of the gas content, thickness and roof lithology on the AVO in the coal seam were analyzed by dynamic forward modeling. The response characteristics and the variation of the AVO attribute were summarized. The feasibility and applicable conditions of the AVO hydrocarbon detection were determined. The results show that the coincidence rate of the hydrocarbon detection effects of P+G attributes with the actual drilling gas content and cumulative gas production is more than 75%. Using this attribute and combining with the regional geological knowledge, the favorable exploration direction is pointed out.

关键词(KeyWords)： 吉尔嘎朗图凹陷;低煤阶;煤层气;AVO;动态正演模拟;烃类检测
Jiergalangtu Sag;low-rank coal;coalbed methane(CBM);AVO;dynamic forward modeling;hydrocarbon detection

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项“华北地区中低煤阶煤层气规模开发区块优选评价”(2016ZX05041-003)

作者(Author): 张鹏豹,李凡异,杨童,韩峰,高歌,张晨
ZHANG Pengbao,LI Fanyi,YANG Tong,HAN Feng,GAO Ge,ZHANG Chen

DOI: 10.19597/j.issn.1000-3754.201910015

参考文献(References)：

• [1]朱庆忠,程相振,王洪光,等.煤层气标准化管理与创新实践[J].石油科技论坛,2019,38(6):24-28.ZHU Qingzhong,CHEN Xiangzhen,WANG Hongguang,et al.Management and innovation of CBM standardization[J].Oil Forum,2019,38(6):24-28.
• [2]王静,张军华,谭明友,等.砂砾岩致密油藏地震预测技术综述[J].特种油气藏,2019,26(1):7-11.WANG Jing,ZHANG Junhua,TAN Mingyou,et al.Seismic prediction review for glutenite tight oil reservoir[J].Special Oil & Gas Reservoirs,2019,26(1):7-11.
• [3]王单华,姜杉钰,贾宏伟,等.海拉尔盆地旧桥凹陷低煤阶煤层气资源潜力分析[J].特种油气藏,2019,26(2):66-70.WANG Danhua,JIANG Shanyu,JIA Hongwei,et al.Resource potential analysis of low rank coalbed methane in Jiuqiao sag of Hailar basin[J].Special Oil & Gas Reservoirs,2019,26(2):66-70.
• [4]郑晓东.Zoeppritz方程的近似及其应用[J].石油地球物理勘探,1991,26(2):129-144.ZHENG Xiaodong.Approximation of Zoeppritz equation and its application[J].Oil Geophysical Prospecting,1991,26 (2):129-144.
• [5]郑晓东.AVO理论和方法的一些新进展[J].石油地球物理勘探,1992,27(3):305-317.ZHENG Xiaodong.Some new development of AVO technique [J].Oil Geophysical Prospecting,1992,27(3):305-317.
• [6]杜文凤,彭苏萍,王珂,等.瓦斯突出煤和非突出煤AVO响应的比较[J].中国煤炭地质,2010,22(6):45-48.DU Wenfeng,PENG Suping,WANG Ke,et al.AVO response comparison between gas outburst coal and non outburst coal[J].Coal Geology of China,2010,22 (6):45-48.
• [7]邱杰,符文,孟祥迪,等.AVO 技术在煤层气勘探中的应用[J].中国煤炭地质,2013,25(3):55-57.QIU Jie,FU Wen,MENG Xiangdi,et al.Application of AVO technology in CBM prospecting[J].Coal Geology of China,2013,25(3):55-57.
• [8]张兴平.高、低产煤层气井AVO正演特征及其识别[J].中国煤炭地质,2011,23(6):48-51,64.ZHANG Xingping.AVO forwarding features and recognition in high and low yielding[J].Coal Geology of China,2011,23(6):48-51,64.
• [9]胡志明,端祥刚,常进,等.页岩气与煤层气开发特征模拟实验研究[J].特种油气藏,2019,26(4):125-130.HU Zhiming,DUAN Xianggang,CHANG Jin,et al .Physical simulation of shale gas and coalbed gas development[J].Special Oil & Gas Reservoirs,2019,26(4):125-130.
• [10]师素珍,韩毅,刘万金,等.含煤地层AVO正演模型参数优选分析[J].中国煤炭地质,2009,21(4):55-58.SHI Suzhen,HAN Yi,LIU Wanjin,et al.Parameter optimization of AVO forward model for coal-bearing strata [J].Coal Geology of China,2009,21 (4):55-58.
• [11]孟召平,郭彦省,王赟,等.基于地震属性的煤层厚度预测模型及其应用[J].地球物理学报,2006,49(2):512-517.MENG Zhaoping,GUO Yansheng,WANG Yun,et al.Prediction model of coal thickness based on seismic attributions and their applications[J].Chinese Journal of Geophysics,2006,49 (2):512-517.
• [12]王勃,姚红星,王红娜,等.沁水盆地成庄区块煤层气成藏优势及富集高产主控地质因素[J].石油与天然气地质,2018,39(2):366-372.WANG Bo,YAO Hongxing,WANG Hongna,et al.Favorable and major geological controlling factors for coalbed methane accumulation and high production in the Chengzhuang Block,Qinshui Baisn[J].Oil & Gas Geology,2018,39(2):366-372.
• [13]桑树勋,范炳恒,秦勇,等.煤层气的封存与富集条件[J].石油与天然气地质,1999,20(2):104-107.SANG Shuxun,FAN Bingheng,QIN Yong,et al.Conditions of sealing and accumulation in coal-bed gas[J].Oil & Gas Geology,1999,20 (2):104-107.
• [14]SHUEY R T.A simplication of the Zoeppritz equations[J].Geophysics,1985,50(4):609-614.
• [15]李远娟,王泽胜,阎建国,等.叠前道集优化处理及其在AVO分析中的应用[J].新疆石油地质,2016,37(4):479-483.LI Yuanjuan,WANG Zesheng,YAN Jianguo,et al.Optimized processing of pre-stack gathers and its application in AVO analysis [J].Xinjiang Petroleum Geology,2016,37(4):479-483.