THE APPLICATION AND EFFECTIVENESS EVALUATION OF DOUBLE-STEP HORIZONTAL WELLS IN SUPER-DEEP AND SUPER-THIN MARGIN RESERVOIR OF TARIM
双台阶水平井在塔里木盆地超深超薄边际油藏开发中的应用及效果评价

Tarim's HaDe thin sand reservoir which is named margin reservoir is a double layer,super deep,super thin,particular low abundance reservoir.If we adopt normal methods to exploit,we can not have any economic benefit,but if we adopt double step horizontal wells,it can increase drainable area greatly,enhance individual well producing rate, achieve the Tarim Oil field's exploiting rule of"wide spacing,high production".According to the exploiting dynamic tracing research,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,economic benefit is obvious.According specialists' appraise,the utilizing of the double step horizontal wells in exploiting Tarim's HaDe thin sand reservoir attained the technique standard of "international leading,domestic classic".