轨迹不确定性

1、 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 PlanSection Copy Right by Caoyang 2001 N S TVD East V.Section North Copy Right by Caoyang 2001 IGRF-International Geomagnetic Reference Field Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang

2、2001 13 23 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 + Copy Right by Caoyang 2001 G T G T GTGT + + - - Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 L Copy Right by Caoyang 2001 G Copy Right by Caoyang 2001 Copy Right by Caoya

3、ng 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 最小方位 Copy Right by Caoyang 2001 Copy Right by Cao

4、yang 2001 Up to 14.99 7ft/1000ft 15 to 24.99 9ft/1000ft 80 to 89.99 26ft/1000ft 25 to 34.99 12ft/1000ft 35 to 49.99 14ft/1000ft 50 to 79.99 15ft/1000ft Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Mmmm K svy i l k k K l L i L k k K i L K i l , , , , 11 1 1 1 1 0 G I IAAI mm c o ss i n c o s

5、s i ns i nc o sc o st a nc o tc o s Bias CCeeee iK s y s t il s y s t l L iLkiLK k K iLkiLK k K T , . 1 1 1 1 1 1 CCeeee iK r a n d il r a n d l L iLkiLk T k K iLKiLK T , . 1 1 1 1 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right

6、by Caoyang 2001 SSS SSS SSS SSS Copy Right by Caoyang 2001 SSS 中心距 分离系数 = - R1 + R2 R1R2 SSS Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 中心距 分离系数 = - R1 + R2 Copy Right by Caoyang 2001 中心距 分离系数 = - R1 + R2 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 95%

7、 90% - 95% 90% 测量程序测量程序T1T5T4T3T2 陀螺陀螺 13.3/8” 80% 70 55 75 160 MWD 60% 55 88% 65 140 地质靶区 80% 当中靶率小于95%时中 钻井靶区 (50ft)几率 中靶率达到95%时 最大尺寸的钻井靶区 65 KEY 陀螺陀螺 9.5/8” 50 75 70 80 170 100 100150 100 100 100150 100 100 100 150 100 100 200 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 Copy Right by Caoyang 2001 断层断层? 井眼防碰井眼防碰 A. 继续钻进 B. 纠方位钻进 C. 侧钻 Copy Right by Caoyang 2001 钻穿断层钻穿断层 井眼防碰井眼防碰 A. 继续钻进 B. 纠方位钻进 C. 侧钻 ($ 0) ($200k) ($500k) 费用费用 = $ 2M 费用费用= $ 5M 预测(穿断层)= 0.25 预测(碰撞) = 0.002 风险费