储层预测技术在渤海W油田的综合应用

Application of Integrated Reservoir Prediction Technologies to Bohai W Oilfield

赵斌 明君 马奎前 杨庆红 夏同星

ZHAO Bin MING Jun MA Kuiqian YANG Qinghong XIA Tongxing

中海石油(中国)有限公司天津分公司, 天津 300452

Tianjin Branch of CNOOC Ltd., Tianfin 300452, China

近几年,新近系砂岩油藏的开发已经成为渤海油田实现增储上产的重要保障.此类油田沉积类型主要属于河流相和浅水三角洲相,砂岩具有分布范围有限,单层厚度薄,纵向上泥岩隔夹层比较发育,横向上物性变化快,油水界面受构造和岩性边界双重因素控制等特点.为了规避这些因素给油田开发方案设计和井位优化尤其是水平井实施带来的风险,在W油田开发过程中综合应用层位精细标定、高频拓展处理、叠前多参数同步反演和属性约束储层参数预测技术,实现了储层精细描述,准确地认识了储层的响应特征、几何形态和隔夹层发育情况,对储层的物性和含油气性也有了较可靠的预测.这一技术体系的研究成果为W油田的科学高效开发提供了重要保障.

The development of Neogene sandstone reservoirs has become an important guarantee for increasing both reserves and production in Bohai oilfield in recent years.These oilfields are mainly fluvial or shallow-water delta facies.The sandstones are characterized by limited distribution,thin single-layer thickness,relatively well developed interbedded mudstones in vertical,and quick physical property change in horizontal.In addition,oil-water interface is controlled by dual factors of structure and lithology border.In order to avoid the risk brought from these factors to oil field development program design,optimization of well location,and especially the implementation of horizontal wells,many integrated technologies have been used in the development of Bohai W oilfield,such as the technologies of fine horizon calibration,high-frequency extension processing,pre-stack multi-parameter simultaneous inversion,and reservoir parameter prediction constrained by attributes.By these technologies,fine reservoir description has been conducted,the reservoir response characteristics,reservoir geometry and intercalated layers development have been understood accurately.In addition,the reservoir physical properties and hydrocarbon bearing conditions have been predicted reliably.The research results of these technologies provide an important guarantee for developing Bohai W oilfield scientifically and efficiently.

https://doi.org/10.3969/j.issn.1008-2336.2014.02.025