东方1-1气田开发地震技术的应用
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摘要
位于莺歌海盆地中央的东方1-1气田受海上作业条件限制,部署的井位数量相对较少,井控范围大,对地震资料的依赖度高。为达到高效开发气田的目的,针对其储层复杂、非均质性强的特点,利用有色反演技术结合倾角切片等资料进行了多体构造分析及砂体精细描述,并利用时频三原色信息来指导隔、夹层的准确雕刻,最终实现了对该气田储层空间几何形态的精细描述;同时,利用叠后资料地震属性及地质综合资料,进行了相控储层预测,结合叠前弹性反演、吸收等信息对储层的物性变化及含气性进行了预测。研究成果对该气田开发井位部署、地质储量的确定等方面起到了重要作用,并由此建立起了一套适应莺歌海盆地储层评价、气田开发的地球物理技术系列。
During the development of the Dongfang 1-1 Gas Field in the Yinggehai Basin,engineers,restricted by the offshore condition,have to reduce the number of well sites deployed,try to keep wells under control in a large scope,and highly rely on the seismic data.In view of this,aiming at the complexity and great heterogeneity of reservoirs in this field,the fine description of sandbodies and structures are performed by use of the seismic colored inversion combined with the data like inclination slice.On this basis,the accurate description of interlayers or insulating layers in the reservoirs guided by the RGB colors in time frequency distribution.As a result,the geometry of the reservoir space in this field is delicately displayed.Meanwhile,the facies-control reservoir models are built for reservoir forecasting by use of post-stack seismic data and seismic attributes,and in combination with such information as pre-stack elastic inversion,adsorption,etc.,the petrophysical properties and gas-bearing capacity of reservoirs are also predicted.The study results play an important role in the well sites deployment and the determination of geological reserves in the development of an offshore gas field,and the most important of all,a series of geophysical techniques are collected for the reservoir assessment and field development adaptable for the fields in the Yinggehai Basin.
During the development of the Dongfang 1-1 Gas Field in the Yinggehai Basin,engineers,restricted by the offshore condition,have to reduce the number of well sites deployed,try to keep wells under control in a large scope,and highly rely on the seismic data.In view of this,aiming at the complexity and great heterogeneity of reservoirs in this field,the fine description of sandbodies and structures are performed by use of the seismic colored inversion combined with the data like inclination slice.On this basis,the accurate description of interlayers or insulating layers in the reservoirs guided by the RGB colors in time frequency distribution.As a result,the geometry of the reservoir space in this field is delicately displayed.Meanwhile,the facies-control reservoir models are built for reservoir forecasting by use of post-stack seismic data and seismic attributes,and in combination with such information as pre-stack elastic inversion,adsorption,etc.,the petrophysical properties and gas-bearing capacity of reservoirs are also predicted.The study results play an important role in the well sites deployment and the determination of geological reserves in the development of an offshore gas field,and the most important of all,a series of geophysical techniques are collected for the reservoir assessment and field development adaptable for the fields in the Yinggehai Basin.
引文
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[10]张绍红.非均质薄储层强化开采时延地震监督分析[J].西南石油大学学报:自然科学版,2009,31(2):53-55.
[2]印兴耀,周静毅.地震属性优化方法综述[J].石油地球物理勘探,2005,40(4):482-489.
[3]张洪波,王纬,顾汉明.高精度地震属性储层预测技术研究[J].天然气工业,2005,25(7):35-37.
[4]张旭,杨辉廷,颜其彬.川北HBC构造飞三段地震属性分析[J].西南石油大学学报:自然科学版,2009,31(1):45-47.
[5]沈荣,张宏健,夏连军,等.基于地震属性分析的储层预测方法研究[J].小型油气藏,2008,13(2):38-40.
[6]丁峰,尹成,朱振宇,等.利用改进的自组织网络进行地震属性分析[J].西南石油大学学报:自然科学版,2009,31(4):47-51.
[7]夏朝晖,余国清,石宁,等.现代油藏精细描述技术和方法[J].内蒙古石油化工,2000,26(2):195-199.
[8]周家雄,王立锋,马光克,等.DF气田储层孔隙度横向预测[J].中国海上油气,2004,16(6):369-372.
[9]沈凤,钱绍新,刘雯林,等.AVO多参数反演在气层检测和储层定量研究中的应用[J].石油学报,1994,15(2):11-20.
[10]张绍红.非均质薄储层强化开采时延地震监督分析[J].西南石油大学学报:自然科学版,2009,31(2):53-55.
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