双台阶水平井在塔里木哈得油田的应用及效果评价

The Application and Result Evaluation of Double-Step Horizontal Wells in Hade Oilfield of Tarim

塔里木哈得薄砂层油藏双层、超深、超薄、储量丰度特低,被评价为边际油藏。若采用常规方式开采,毫无经济效益。利用双台水平井可大大增加泄油面积,提高单井产量,实现塔里木油田“稀井高产”的开发原则。开发动态跟踪研究表明,双台阶水平井对全区稳定分布的深层双层层状边水油藏具有较好的适应性,开发效果好,经济效益明显。

Tarim's Hade thin-sand reservoir which is named margin reservoir is a double-layer, super-deep, super-thin, super-low-abundance reservoir. Double-step horizontal wells can increase drainable area greatly and enhance individual well producing rate which achieve the Tafim oilfield's exploiting rule of“wide spacing, high production”, while, any economic benefit has not been got ff normal methods to exploit is adopted. It is shows of the exploiting-dynamic-tracing research that double-step horizontal wells have good adaptability for the stable distributed deep zone double-layer banding margin reservoir of all the area, exploiting effect is very good and economic bene- fit is obvious.