双圆柱法设计三维双向不交轨道
(具有直线段)
给定条件:出发点a的αa,φa,Da,Na,Ea; 目标点t的αt,φt,Dt,Nt,Et;
最大造斜率K,及给定相应的曲率半径R; 由井眼曲率关系式,K?
22KV?KHsin4?,可的:
1?R112?sin? 22RVRH由RV和RH的关系, RV?RH?2??1得:
cos?1?cos?22?cos?1?cos?2?4? RH?R??sin? ???2??1?????2??14 RV?R1???cos??cos???sin?
12???P ?X?tg?1?D?E (?N?0) ?X?tg?1?N?E?X?tg?1?180o (?N?0)
?N
2一. 计算垂直剖面图上的αb
1. 对于“先增斜后降斜”的轨道(?X??a)
?D?RV(sin?b?sin?a)?RV(sin?t?sin?b)?Wcos?b Wcos?b??D?RV(2sin?b?sin?a?sin?t)?P?RV(cos?a?cos?b)?RV(cos?b?cos?t)?Wsin?b Wsin?b??P?RV(cos?a?cos?t?2cos?b)
sin?b?P?RV(cos?a?cos?t?2cos?b)?
cos?b?D?RV(2sin?b?sin?a?sin?t) [?D?RV(sin?a?sin?t)]sin?b?[?P?RV(cos?a?cos?t)]cos?b?2RV
A??D?RV(sin?a?sin?t) B??P?RV(cos?a?cos?t)
A?sin?b?B?cos?b?2RV 令:
AA?B22?cos?y;
BA?B22?sin?y;
则:sin?bcos?y?cos?bsin?y?sin(?b??y)?2RVA?B22
?b?sin?
?1???B?1?sin??2222?A?B??A?B2RV?? ?2. 对于“先降斜后增斜”的轨道(?X??a)
?D??RV(sin?b?sin?a)?RV(sin?t?sin?b)?Wcos?b Wcos?b??D?RV(sin?a?sin?t?2sin?b)?P??RV(cos?a?cos?b)?RV(cos?b?cos?t)?Wsin?b Wsin?b??P?RV(2cos?b?cos?a?cos?t)
sin?b?P?RV(2cos?b?cos?a?cos?t)?
cos?b?D?RV(sin?a?sin?t?2sin?b)
[?P?RV(cos?a?cos?t)]cos?b?[?D?RV(sin?a?sin?t)sin?b?2RV
A??D?RV(sin?a?sin?t) B??P?RV(cos?a?cos?t)
B?cos?b?A?sin?b?2RV 令:
AA?B22?cos?y;
BA?B22?sin?y;
则:sin?ycos?b?cos?ysin?b?sin(?y??b)?2RVA?B22
?b?sin?
?1???2RV?1?sin??2222A?B???A?BB?? ?二. 计算水平投影图上的φb
1. 先增方位后降方位的轨道(?X??a)
可直接列出计算公式。
C??N?RH(sin?a?sin?t) D??E?RH(cos?a?cos?t)
C?sin?b?D?cos?b?2RH 令:
CC?D22?cos?y;
DC?D22?sin?y;
则:sin?bcos?y?cos?bsin?y?sin(?b??y)?2RHC?D22
?b?sin?
?1???D?1?sin??2222?C?D??C?D2RH?? ?2. 先降方位后增方位的轨道(?X??a)
可直接列出计算公式。
C??N?RH(sin?a?sin?t) D??E?RH(cos?a?cos?t)
D?cos?b?C?sin?b?2RH 令:
CC?D22?cos?y;
DC?D22?sin?y;
则:sin?ycos?b?cos?ysin?b?sin(?y??b)?2RHC?D22
?b?sin? ?1???2RH?1?sin??2222?C?D??C?DD先增后降 ?? ?先降后增 垂直?2RV?1??sin剖?bA2?B2?面图 ??B?1?sin??22??A?B??B?1 ??sin??b22?A?B???2RV?1?sin??22??A?B?? ?水平?2RH??D投?b?sin?1??sin?1??2222影?C?D??C?D图 ????2RHD?1?sin?1??? ?b?sin?2222?C?D??C?D??? ?双圆柱法设计三维双向不交轨道
(没有直线段)
给定条件:出发点a的αa,φa,Da,Na,Ea; 目标点t的αt,φt,Dt,Nt,Et; 井眼曲率有计算求得。
?X?tg?1cos?X?sin?X??P ?D?D?D2??P2
?P?D2??P2?X?tg?1?X?tg?1cos?X?sin?X??E (?N?0) ?N?E?180o (?N?0) ?N?N?N2??E2?E?N2??E2
一. 水平投影图
1.先增方位,后降方位
这种情况下,与先降后增相比,仅仅是公式改动一下就行。
cos?Xcos?b?sin?Xsin?b?cos(?b??X)?1?cos(?X??t)?cos(?X??a)?2?1?21211sin?X(sin?a?sin?t)?cos?X(cos?a?cos?t)22
?b??X?cos?1?cos(?X??t)?cos(?X??a)?
??2.先降方位,后增方位
?N??RH(sin?b?sin?a)?RH(sin?t?sin?b)
RH??N
sin?a?sin?t?2sin?b?E??RH(cos?a?cos?b)?RH(cos?b?cos?t)
RH??E
2cos?b?cos?a?cos?t?N?E?
(sin?a?sin?t)?2sin?b2cos?b?(cos?a?cos?t)2?Ncos?b?2?Esin?b??E(sin?a?sin?t)??N(cos?a?cos?t)
两边同除以2?N2??E2,则得:
cos?Xcos?b?sin?Xsin?b?cos(?X??b)?11sin?X(sin?a?sin?t)?cos?X(cos?a?cos?t)22
1?cos(?X??t)?cos(?X??a)?2?1?212???b??X?cos?1?cos(?X??t)?cos(?X??a)?
二. 垂直剖面图上
可以直接列出公式来。
1.对于先增斜后降斜的轨道
?b??X?cos?1?cos(?X??t)?cos(?X??a)?
2.对于先降斜后增斜的轨道
?1?212???b??X?cos?1?cos(?X??t)?cos(?X??a)??1?212??
公式汇总
水先增方位,后平降方位 投影先降方位,后图 增方位 ?b??X?cos?1?cos(?X??t)?cos(?X??a)? ?1?212???1?212???b??X?cos?1?cos(?X??t)?cos(?X??a)? ?1?212??垂先增斜,后降直斜 剖面先降斜,后增图 斜
?b??X?cos?1?cos(?X??t)?cos(?X??a)? ?1?212???b??X?cos?1?cos(?X??t)?cos(?X??a)?