Направленное бурение скважин - Трехинтервальный профиль

 

4.3.1 Трехинтервальный профиль

 

 

При третьем прямолинейном интервале профиля (рис. 10, а) расчет ведется по следующей схеме

 

Рис. 10. Трехинтервальный  профиль

 

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   Q2 = arccos {[R2 . (R2 - S)] + H . [(H2 +S2 - 2R2 . S)]0,5}/ [(R2 - S)2 + H2],                                               (39)

 

где H = h - H1.                                                      

 

                                                      l2 = 0,01745 . R2 . Q2,                                                                  (40)

 

                                                      H2 = R2 . sin Q2,                                                                          (41)

 

                                                      S2 = R2 . (1 - cos Q2),                                                                  (42)

 

                                                      l3 = (H - H2)/cos Q2 ,                                                                   (43)

 

Рис. 11. Четырехинтервальный  профиль

 

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                                                      H3 = h - H1 - H2,                                                                          (44)

 

                                                       S3 = (H - H2) . tg Q2,                                                                  (45)

 

                                                       L = H1 + l2 + l3.                                                                          (46)