一种预测岩性油气藏成藏条件的地震方法
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摘要
在缺少钻井、测井资料的条件下,如何对岩性油气藏主要成藏因素进行有效预测和定量计算一直是石油勘探界致力研究的课题。应用地质统计学等方法对地震相关参数与岩性油气藏成藏关系进行研究,总结地震层速度和砂体反射振幅等地震参数与烃源岩剩余压力、等效排烃压力之间内在的联系,进而用地震速度谱资料计算砂岩体内的孔隙压力和烃源岩剩余围岩压力、用地震反射振幅和频率估算砂体厚度并预测砂体孔隙度、根据经验关系计算等效排烃压力,可实现用地震参数对砂岩透镜体成藏条件的定量评价。
How to effectively predict and quantitatively compute the key forming factors of lithological reservoir is a task that the industry has dedicated the study all along because of lacking in drilling and logging data. The relationships between the relative seismic factors and lithological reservoir forming were studied by geostatistics, the inter relationships of the seismic factors (such as interval velocity and reflection amplitude from sands), residual pressure of source rock and equivalent expulsion pressure were summarized, then the porosity pressure in sand and residual wall rock pressure were computed by seismic velocity spectrum then, The thickness of sand were evaluated and the porosity were predicted by seismic reflection amplitude, and the equivalent expulsion pressure were computed by empirical relations adn the quantitative evaluation to the forming conditions of lenses could be realized in the end.
How to effectively predict and quantitatively compute the key forming factors of lithological reservoir is a task that the industry has dedicated the study all along because of lacking in drilling and logging data. The relationships between the relative seismic factors and lithological reservoir forming were studied by geostatistics, the inter relationships of the seismic factors (such as interval velocity and reflection amplitude from sands), residual pressure of source rock and equivalent expulsion pressure were summarized, then the porosity pressure in sand and residual wall rock pressure were computed by seismic velocity spectrum then, The thickness of sand were evaluated and the porosity were predicted by seismic reflection amplitude, and the equivalent expulsion pressure were computed by empirical relations adn the quantitative evaluation to the forming conditions of lenses could be realized in the end.
引文
[1]王宁,陈宝宁,翟建飞.岩性油气藏形成的成藏指数.石油勘探与开发,2001,27(6):4～5
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[3]孔祥宁.地层密度估算及其应用.石油物探,2002,41(4):429～432
[4]王云,赵文智,何海清.超压与油气生成相互作用关系及对油气运聚成藏的影响.石油勘探与开发,2002,29(4):12～15
[5]王宁.等效排烃压力及其在东营凹陷油气勘探中的应用.石油大学学报,2000,24(4):58～60
[6]陈军,陈岩.地震属性分析在储层预测中的应用.石油物探,2001,40(3):94～99,111
[7]朱培民,朱光明等.用纵波A V O数据反演储层裂隙密度参数.石油物探,2001,40(2):1～12
[8]潘元林,张善文,肖焕钦等.济阳断陷盆地隐蔽油气藏勘探.北京:石油工业出版社,2003:56～66
[9]黄海平,马刊创,王国庆等.异常流体高压研究现状与展望.江汉石油学院学报,2000,22(3):45～47
[10]戈盾.地层压力的地震预测.石油地震地质.1992,4(1):65～85
[11]陆基孟.地震勘探原理.山东东营:石油大学出版社,1990:189～222
[12]王捷.油藏描述技术——勘探阶段.北京:石油工业出版社,1996:364～377
[13]于建国,韩文功,王金铎.陆相断陷盆地砂岩储层横向预测.山东东营:石油大学出版社,2002:63～86
[2]云美厚,易维启.孔隙流体地震特征计算.石油物探,2001,40(2):13～20,28
[3]孔祥宁.地层密度估算及其应用.石油物探,2002,41(4):429～432
[4]王云,赵文智,何海清.超压与油气生成相互作用关系及对油气运聚成藏的影响.石油勘探与开发,2002,29(4):12～15
[5]王宁.等效排烃压力及其在东营凹陷油气勘探中的应用.石油大学学报,2000,24(4):58～60
[6]陈军,陈岩.地震属性分析在储层预测中的应用.石油物探,2001,40(3):94～99,111
[7]朱培民,朱光明等.用纵波A V O数据反演储层裂隙密度参数.石油物探,2001,40(2):1～12
[8]潘元林,张善文,肖焕钦等.济阳断陷盆地隐蔽油气藏勘探.北京:石油工业出版社,2003:56～66
[9]黄海平,马刊创,王国庆等.异常流体高压研究现状与展望.江汉石油学院学报,2000,22(3):45～47
[10]戈盾.地层压力的地震预测.石油地震地质.1992,4(1):65～85
[11]陆基孟.地震勘探原理.山东东营:石油大学出版社,1990:189～222
[12]王捷.油藏描述技术——勘探阶段.北京:石油工业出版社,1996:364～377
[13]于建国,韩文功,王金铎.陆相断陷盆地砂岩储层横向预测.山东东营:石油大学出版社,2002:63～86
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