Page 265 - Well Control for Completions and Interventions

Well Kill, Kick Detection, and Well Shut-In 259

SITHP 0 psi

SICHP 0 psi
H 1

Oil gradient 0.35 psi/ft

Annulus fluid gradient 0.67 psi/ft

SSD 10,300 ft

Top reservoir
10,500 ft TVD

Figure 7.3 Calculating the fluid level in tubing and annulus.

• Annulus to tubing capacity ratio is: 0.0414/0.02125 5 1.95.
• H2 5 1.95H1.
Balancing HP enables the fluid level (H1) in the annulus to be
calculated.
• 0.67 x (10,300 2 H1) 5 (1.95H1 3 0.67) 1 0.35(10,300 2 1.95H1).
• 6901 2 0.67H1 5 1.31H1 1 3605 2 0.68H1.
• 6901 3605 5 1.31H1 2 0.68H1 1 0.67H1.
• 3296 5 1.30H1.
• H1 5 3296/1.30 5 2535 ft.
• H2 5 2535 ft. 3 1.95 5 4943 ft.
• Tubing HP at SSD:
• 10,300-(4943 3 0.35) 1 (4943 3 0.67) 5 5187.