The Innovative Design of Deep In Situ Pressure Retained Coring Based on Magnetic Field Trigger Controller

Figure 9

Magnetic circuit design scheme when the valve seat consists of eight identical shape tile magnets. (a) Scheme 10. (b) Scheme 11. (c) Scheme 12. (d) Scheme 13. (e) Scheme 14. (f) Scheme 15.

(a)

(b)

(c)

(d)

(e)

(f)