方正断陷有效源岩测井、地震响应及分布预测
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摘要
方正断陷东部凹陷发育两套烃源岩,底部烃源岩为深灰色泥岩夹薄层煤的煤系地层,顶部烃源岩为半深湖—深湖相的深灰色泥岩,西部凹陷仅发育底部烃源岩,为煤系泥岩。以测井烃源岩评价为基础,采用地震相法在平面上追踪和预测了新安村+乌云组烃源岩的分布范围及厚度。烃源岩测井模拟和地震预测表明:底部有效烃源岩厚度较大,普遍大于40 m,东西凹陷带都有分布;顶部有效烃源岩厚度为30~60 m,主要分布在东部凹陷带的大林子次凹和德善屯次凹。有效烃源岩的分布规律和油气来源研究为油气勘探和石油地质综合研究提供了依据。
Two sets of the hydrocarbon source rock are developed in East Sag of Fangzheng Fault Depression: the bottom is the coal-measure strata of the dark gray mudstone commingled with the thin coal seam; the top is the dark gray mudstone with the semi-deep-deep lake facies,while only the hydrocarbon source rock is developed in West Sag,it is the coal-bearing series. On the basis of the evaluation of the hydrocarbon source rocks,with the help of the seismic facies method,the distribution range and thickness of Xin'an Village + Wuyun Formation hydrocarbon source rocks were tracked and predicted on the plane. The well logging modeling and seismic survey showed that the effective hydrocarbon source rocks are pretty thicker: commonly more than 40 m,and moreover distributed in both East and West Sag; the thickness of the top ones is between 30 m to 60 m,mainly distributed in Dalinzi Subsag and Deshantun of the eastern sag belt. The researches on the distribution laws of the effective hydrocarbon source rocks and petroleum sources have provided a certain evidences for the petroleum exploration and geological comprehensive study.
Two sets of the hydrocarbon source rock are developed in East Sag of Fangzheng Fault Depression: the bottom is the coal-measure strata of the dark gray mudstone commingled with the thin coal seam; the top is the dark gray mudstone with the semi-deep-deep lake facies,while only the hydrocarbon source rock is developed in West Sag,it is the coal-bearing series. On the basis of the evaluation of the hydrocarbon source rocks,with the help of the seismic facies method,the distribution range and thickness of Xin'an Village + Wuyun Formation hydrocarbon source rocks were tracked and predicted on the plane. The well logging modeling and seismic survey showed that the effective hydrocarbon source rocks are pretty thicker: commonly more than 40 m,and moreover distributed in both East and West Sag; the thickness of the top ones is between 30 m to 60 m,mainly distributed in Dalinzi Subsag and Deshantun of the eastern sag belt. The researches on the distribution laws of the effective hydrocarbon source rocks and petroleum sources have provided a certain evidences for the petroleum exploration and geological comprehensive study.
引文
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[17]胡玉双,齐仁理,魏亚荣,等.方正断陷中部发育走滑断层的地震证据及有利区带预测[J].吉林大学学报(地球科学版),2010,40(6):1271-1276.
[18]康红庆,马春华,宋考平.测井约束地震反演在储层预测中的应用[J].特种油气藏,2012,19(3):14-17.
[19]付广,刘桐汐,史集建,等.方正断陷源盖空间匹配关系及控藏作用[J].岩性油气藏,2014,26(5):9-14.
[2]王允清,刘云英,郝兴国,等.方正断陷断裂系统与构造样式[J].大庆石油学院学报,2009,33(6):47-51.
[3]邵曌一,杨建国,王洪伟,等.黑龙江省东部方正断陷内部格局的新认识及沉积—构造演化[J].古地理学报,2013,15(3):339-350.
[4]万传彪,薛云飞,金玉东,等.依舒地堑中—新生代地层划分对比研究新进展[J].大庆石油地质与开发,2014,33(5):179-185.
[5]邵曌一,杨建国,王洪伟,等.依舒地堑方正断陷断层组合及构造样式[J].大庆石油地质与开发,2012,31(5):1-6.
[6]王涛.方正断陷东、西部油气成藏条件及模式的差异性[J].大庆石油地质与开发,2014,33(4):23-28.
[7]宁维坤,任志高.油气化探方法在方正断陷油气勘探中的应用[J].世界地质,2010,29(2):292-297.
[8]Beers R F.Radioacitivity and organic content of some Paleozoic shales[J].AAPG Bulletin,1945,29(1):1-22.
[9]Autric A,Dumesnil P.Resistivity radioactivity and sonic transit time logs to evaluate the organic content of low permeability rocks[J].The log Analyst,1985,26(3):1-22.
[10]Peters K E,Magoon L B,Bird K J,et al.North Slope,Alaska:Source rock distribution,richness,thermal maturity,and petroleum charge[J].AAPG Bulletin,2006,90(2):261-292.
[11]Erlich R N,Barrett S F,Guo B J,et al.Seismic and geologic characteristics of drowning events on carbonate platforms[J].AAPG Bulletin,1990,74(10):1523-1537.
[12]Passey Q R,Creaney S,Kulla J B,et al.A practical model for organic richness from porosity and resistivity logs[J].AAPG Bulletin,1990,74(12):1777-1794.
[13]曲彦胜,钟宁宁,刘岩,等.烃源岩有机质丰度的测井计算方法及影响因素探讨[J].岩性油气藏,2011,23(2):80-84.
[14]顾礼敬,徐守余,苏劲,等.利用地震资料预测和评价烃源岩[J].天然气地球科学,2011,22(3):554-560.
[15]王伟明,卢双航,曹瑞成,等.海拉尔盆地乌东斜坡带优质烃源岩识别及油气运聚特征再认识[J].石油与天然气地质,2011,32(5):692-697.
[16]张明学,王国雷,方蕾.方正断陷北部古近系地层地震相特征研究[J].科学技术与工程,2011,11(9):1906-1911.
[17]胡玉双,齐仁理,魏亚荣,等.方正断陷中部发育走滑断层的地震证据及有利区带预测[J].吉林大学学报(地球科学版),2010,40(6):1271-1276.
[18]康红庆,马春华,宋考平.测井约束地震反演在储层预测中的应用[J].特种油气藏,2012,19(3):14-17.
[19]付广,刘桐汐,史集建,等.方正断陷源盖空间匹配关系及控藏作用[J].岩性油气藏,2014,26(5):9-14.