塔中16油田中低渗边水油藏的高效开发实践

A SUCCESSFUL MID - LOW POROUS STRATIFIED B OTTOM WATER RESERVOIR DEVELOPMENTPRACTICE OF TAZHONG 16 OIL FIELD

以塔里木油田的塔中16油田为例,介绍一种适合层状低渗边水油藏特点的开发模式。开发初期通过对水平井、直井试井的产能对比,确定了以水平井为主、直井为辅,沿构造轴线布井的思路,运用容积法和数值模拟方法确定了油藏的水体大小。水平井见水后,采取保持工作制度稳定,有效地控制了含水率的快速上升。通过计算每采出1% 地质储量的平均地层压降来评价驱动能量,证明塔中16油田的开发效果非常好,说明采用塔中16油田的模式能高效开发层状中低渗边水油藏。

Tazhong 16 of Tarim oil field as an example, a development method for the layer reservoir of mid -low permeability bottom water was introduced in the paper. In the early development phase, the methodology that horizontal wells being the majority compensated by vertical wells at the structural axis was adopted by comparing horizontal well productivity with that of vertical wells. With volumetric balance and reservoir simulation to analyze stratified bottom water volume, the result indicated that the water volume is large enough. When horizontal wells contain water, the water cut growth is under firm control by using persistent choke. Driving energy was evaluated by calculating the average formation pressure loss of 1 % OOIP. According to major development index, the plot of water cut versus OOIP recovery, water drive characteristic profile and water cut versus water cut growth profile, Tazhong 16 development efficiency was proved to be excellent. All these indicated that Tazhong 16 mode is one of the most successful mid-low porous stratified bottom water reservoir development paradigms.