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黄沙坨油田火山岩裂缝性稀油油气藏,纵横向裂缝宽度、深度和密度等难以掌握,注采井网待进一步完善。针对油藏的特点,采取周期脉冲注水和动态调整注采井组配产配注方案,更新高压自控流量计,应用水平井和双支水平井注水开发试验等措施,在进一步完善动态间开增油,降低注水干线压力,减小柱塞泵能耗,改变液流方向,提高注水速度、波及系数和水驱油效率等方面,水平井发挥了众多直井在垂直裂缝发育的情况下才能见到的良好作用,为辽河东部凹陷和类似油田的发展借鉴,进行了有益的尝试,储备了前沿技术TTHW(水平井水驱采油技术),为进一步提高油田的最终采收率,创造了有利条件。
Huangshangtuo volcanic fractured dilute oil and gas reservoirs, vertical and horizontal cracks width, depth and density are difficult to grasp, injection well network to be further improved. According to the characteristics of the reservoir, the measures of periodic pulse water injection and dynamic adjustment of production and distribution injection scheme of injection well and production well group, updating of high pressure automatic control flowmeter, application of horizontal well and double horizontal well water injection test and other measures are taken to further improve the dynamic increase Horizontal wells have played a number of vertical wells in the case of vertical cracks can be seen in the case of vertical wells in the horizontal well to reduce the pressure on the water main line, reducing the energy consumption of the plunger pump, changing the flow direction, increasing water injection speed, sweep coefficient and water flooding efficiency . It is a useful attempt to learn from the development of eastern Liaohe depression and similar oilfields and reserves the cutting edge technology TTHW (Horizontal Well Water Drive Production Technology), which has created favorable conditions for further enhancing the ultimate oil recovery.