塔中碳酸盐岩裂缝综合预测技术及应用
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摘要
针对塔中地区碳酸盐岩裂缝具有形式复杂多变、多期成因、多期改造、多期充填的特点,应用相干体、应变量分析和数值模拟新技术对塔里木盆地塔中16-30井区奥陶系碳酸盐岩裂缝发育带进行了预测分析,认为在地震属性上低相干、高应变量及裂缝密度较高的区域为碳酸盐岩裂缝发育区。根据这三项新技术裂缝预测结果,结合测井资料和观察岩心裂缝特点,综合研究认为可将裂缝分为三期,裂缝发育带主要沿断裂和构造转折端的高应变区分布。该预测结果与塔中16-30井区多口实际钻井奥陶系碳酸盐岩岩心裂缝参数统计值相吻合,实钻多口高产油气流井均处于预测裂缝发育区,其应用结果表明裂缝综合预测结果较为可靠,可作为井位部署和储量计算的依据。
In view of the crack characteristics,this paper makes a prediction for the Ordovician carbonate fracture development zone where the wells from Tazhong 16 to Tazhong 30 are situated in the middle of the Tarim basin.It used new technologies such as coherence cube,strain analysis and numerical simulation to draw conclusions.It approves that according to the seismic attribute carbonate rock fracture in the zone is featured by low coherence,high strain and dense cracks.The fractures can be divided into 3 parts as far as well logging information and core samples are concerned.The fracture zone developed along the crack and the hinge line in high strain zone.The prediction corresponds with the real statistic parameter of the fracture zone,and it is effective and can provide the reference for the operators to predict synthetically the well location and the calculation of reserves.
In view of the crack characteristics,this paper makes a prediction for the Ordovician carbonate fracture development zone where the wells from Tazhong 16 to Tazhong 30 are situated in the middle of the Tarim basin.It used new technologies such as coherence cube,strain analysis and numerical simulation to draw conclusions.It approves that according to the seismic attribute carbonate rock fracture in the zone is featured by low coherence,high strain and dense cracks.The fractures can be divided into 3 parts as far as well logging information and core samples are concerned.The fracture zone developed along the crack and the hinge line in high strain zone.The prediction corresponds with the real statistic parameter of the fracture zone,and it is effective and can provide the reference for the operators to predict synthetically the well location and the calculation of reserves.
引文
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[7]王世星,曹辉兰,靳文芳,等.碳酸盐岩缝洞系统地震响应特征分析和卡1区缝洞储层预测[J].石油物探,2005,44(5):421-427.
[2]斯麦霍夫E M.裂缝性油气储集层勘探的基本理论与方法[M].陈定宝,译.北京:石油工业出版社,1985.
[3]师永民,陈广坡,潘建国,等.储层综合预测技术在塔里木盆地碳酸盐岩中的应用[J].天然气工业,2004,24(12):51-54.
[4]包强,刘仲宣.资阳地区震旦系裂缝特征及控制因素初探[J].天然气工业,1996,16(5):28-31.
[5]徐旺林,庞雄奇,王军,等.油气藏裂缝型储层预测方法——以济阳坳陷古潜山为例[J].天然气工业,2006,26(3):32-34.
[6]赵良孝,补勇.碳酸盐岩储集层测井技术[M].北京:石油工业出版社,1994.
[7]王世星,曹辉兰,靳文芳,等.碳酸盐岩缝洞系统地震响应特征分析和卡1区缝洞储层预测[J].石油物探,2005,44(5):421-427.
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