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24. Circulation Kill Techniques - PETE 661 Drilling...

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A T M PETE 661 Drilling Engineering Lesson 24 Circulation Kill Techniques
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2 A T M NOTE No more Homework! The Solution to HW #12 is on the Web Our FINAL EXAM will be on Friday, May 2, 12:30 p.m. – 2:30 p.m. Rm. 208 Equations will be provided, as usual You may bring one 8 ½ * 11 Eq. Sheet
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3 A T M Circulation Kill Techniques Shut-In Pressures Weighting Up the Mud Driller’s Method Wait & Weight Method Concurrent Method
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4 A T M Shut-In Pressures Once a kick is detected, and proper shut-in procedures are followed, the influx will continue… until the fluids in the wellbore are compressed sufficiently to where the Shut-in Surface Pressure + the HSP = Formation pressure (annulus or DP?) No more influx
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5 A T M Shut-In Pressures Once the influx is stopped: 1 The kick fluids must be removed from the wellbore, and 2 The low density drilling fluid that was in the hole when the kick occurred must be replaced with KWM
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6 A T M U-Tube concept The Stabilized BHP = SIDPP + HSP mud_dp = SICP + HSP mud_ann + HSP kick = Formation Press. KICK
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7 A T M Back Pressure Valve in the Drillstring Flapper How do you measure the SIDPP?
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8 A T M Measurement of SIDPP and SICP with Back Pressure Valve SIDPP
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9 A T M Weighting Up the Mud Example 5.6 OWM = 13.2 ppg
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