老油气区精细勘探潜力与方法技术

根据富油气凹陷油气分布特征及剩余油气资源量分布规律,提出富油气凹陷中的有利区带是下一步勘探重点,主力勘探层系及上、下层系是精细勘探重点层位。在分析制约老油气区勘探关键问题基础上,提出了一套老油气区精细勘探思路,建立了针对不同储层及油藏类型的精细勘探方法技术(油气层识别、油气层保护、油气藏规模预测、提高油气产能等)。近几年,该方法技术在老油气区精细勘探中得到了推广应用,新增油气储量不断提高,加快了老油气区油气发现速度,与海上或新区相比勘探与开发成本明显降低,投资回收周期缩短,提高了勘探效益。

Potential and technologies of refined exploration in mature oil and gas regions

In order to further strengthen exploration in China's mature oil and gas regions,researchers studied the distribution of oil and gas reservoirs and residual oil and gas resources in petroliferous depressions and proposed that the key formations as well as those underlying and overlying them in the potential zones of these depressions be the future targets of refined exploration.Based on the analysis of exploration experiences in mature oil and gas regions,they put forward a new idea of refined exploration and established a set of approaches and technologies(including identification and protection of oil and gas layer,prediction of oil and gas reservoirs,oil and gas production enhancement,and etc.) aiming at different kinds of reservoirs and pools.Their wide application has resulted in large reserve growth.Compared with exploration in offshore and frontier areas,refined exploration in mature oil and gas regions has lower cost,shorter period of capital recovery,and higher economic returns.