储层预测技术在鸭西、柳沟庄地区的应用

Reservoir predictions in Yaxi and Liugouzhuang areas

鸭西地区位于青西凹陷东北部,区内发育多期扇体,扇三角洲前缘的砂体为有利储层。本文采用了层序地层学解释、层序地层格架下的构造精细解释、体系域框架下多属性综合识别、叠后波阻抗反演、叠前反演、频谱衰减预测流体等技术针对鸭西地区进行扇体识别、储层预测、流体检测,识别出鸭西地区各期次的扇体,预测了扇三角洲前缘有利砂体分布范围;采用蚂蚁体属性及曲率属性技术对柳沟庄地区白云岩裂缝储层的分布和裂缝发育区进行了预测,明确了有利裂缝发育区。依据预测结果在鸭西和柳沟庄地区部署的3口井全部获得工业油流。

Favorable reservoirs in multi-stage fans and delta front were developed in Yaxi area located in the northeast of Qingxi Depression.Using series of interpretation approaches,such as sequence stratigraphy and structure interpretations under sequence stratigraphic framework,multi attribute comprehensive identification under system tract framework,poststack acoustic impedance inversion,prestack inversion,and spectrum attenuation fluid prediction,multi-stage fans are identified,and favorable reservoir distribution of multi-stage fans and delta front are predicted in Yaxi area.Using ant and curvature volume attributes,the distribution of favorable dolomite fractured reservoirs in Liugouzhuang are predicted.Commercial oil flow is discovered from 3 wells proposed based on our predictions.