WELL CONTROL MANUAL (Ensco Document)

WELL CONTROL MANUAL (Ensco Document mangement System)

Table of Contents

A._ ENSCO WELL CONTROL POLICY ................................................................................... 6

Ensco Well Control Manual ............................................................................................................................. 6

Ensco Well Control Policy Statements ............................................................................................................ 7

Ensco Well Control “Cardinal Rules” .............................................................................................................. 8

B._ WELL CONTROL TRAINING & DRILLS ......................................................................... 11

Well Control Training Courses ....................................................................................................................... 11

Well Control Drills........................................................................................................................................... 11

C._ PRIMARY WELL CONTROL .............................................................................................. 13

Duties and Responsibilities ............................................................................................................................. 15

Gas Cut Mud .................................................................................................................................................... 17

Hydrogen Sulfide ............................................................................................................................................. 18

D._ SECONDARY WELL CONTROL ......................................................................................... 20

Secondary Well Control Processes ................................................................................................................ 20

E._ DRILLING TOP HOLE AND DIVERTING

Drilling Top Hole Sections on Jack-up Rigs .................................................................................................. 24

Drilling Top Hole Sections on Semi-Submersible Rigs ................................................................................. 25

Diverting Procedures ..................................................................................................................................... 25

F._ BOP SHUT-IN PROCEDURES …….................................................................................... 28

General Shut-In Philosophy ........................................................................................................................... 28

Shut-In Procedures ........................................................................................................................................ 28

G._ WELL KILL OPERATIONS …........................................................................................... 32

Summary of the Well Kill Process ................................................................................................................. 32

Pre-Recorded Well Control Data ................................................................................................................... 32

Kick Log and Monitoring of Well Pressures ................................................................................................. 33

Well Kill Methods ......................................................................................................................................... 34

Stripping to Bottom ....................................................................................................................................... 36

Off Bottom Kill ............................................................................................................................................. 37

Highly Deviated and Horizontal Wells .......................................................................................................... 38

Computer Software for Well Control Calculations ........................................................................................ 39

Well Control Incident Reports ....................................................................................................................... 40

Crew Responsibilities during Well Kill Operations ....................................................................................... 40

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