宝浪油田低渗油藏高效开发技术研究

THE TECHNOLOGIES FOR HIGH EFFICIENT DEVELOPMENT OF LOW PERMEABILITY RESERVOIR

以宝浪油田宝北区块为例,针对油藏特点,应用波动方程串级深度偏移处理技术识别了高陡构造;应用测井资料分析及古构造应力场分析技术识别了裂缝;应用反射振幅-厚度法和小波处理技术进行了储层横向预测;在精细地质模型的建立和合理井网密度研究的基础上,形成了低渗油藏综合调整技术和屏蔽暂堵技术,以及油管传输负压射孔为主的整体油层保护技术;应用防气杆式泵机械采油技术解决了高气油比问题;应用多级冲压酸化和高压分层酸化工艺技术解决低渗油层吸水难的问题。在油田开发过程中,形成了一整套的低渗油藏高效开发技术,现场应用取得了较好的效果。

Northern Baolang Block in Baolang oilfield is taken as an example to indentify the steep structures by using wave equation cascade depth migration processing technique, idfentify the fractures by using log information and palaeotectonic stress field analysis,predict the reservoirs laterally by using reflection amplitude-thickness and wavelet processing technique. Base on the establishment of fine geologic model and research on reasonable well space, the comprehensive adjustment and bridge plugging of low permeability reservoirs and whole reservoir protection under tubing survey perforating techniques are presented. anti gas rod pump mechanical production technology resolves high gas oil ratio. Multilevel stamping acidizing and individual layer acidizing at high pressure resolves the problem of low permeability reservoir hygroscope difficulty. During oilfield development, a whole set of high efficient development technology for low permeability reservoirs is formed. Oilfield application acquires preferable effectiveness.