Monday, June 3, 2013



        This manual presents the well control policies and procedures of Transocean SedcoForex. It has been developed with input from Operations, Engineering, Well Construction and Training. This manual is to be kept on all rigs and in the Operations offices and it is to be used as the reference for all well control operations. It is the duty of all personnel involved in well control operations to read this manual to familiarize themselves with the current company policies and ensure that they are followed. This manual must be discussed and reviewed with our customers both offshore and onshore in a timely manner. Any discrepancies or misunderstandings must be clarified before drilling or completion operations begin. Whilst every attempt has been made to capture best industry practices, no manual is perfect and issues you disagree with should be challenged in an appropriate manner. It is your responsibility to keep this a live and healthy document. Well Control is an everyday issue, not just an exam to pass every two years, so for the safety of all concerned please use this manual in your daily business. Above all, THINK about kick prevention and the rest will never have to be used.


Transocean SedcoForex personnel can forward recommendations for change to their Region Operations Manager or Regional Training Centre. The proposal for change will be forwarded to the Well Construction Manager who will be responsible for obtaining appropriate approval and preparing the final revision sheet. These revisions will, in turn, be issued to the field.


Throughout this manual, measurements and formulae have been given in oilfield, metric and SI units. This gives the flexibility for each operation to decide with the client which units are to be used and the appropriate forms made available. THIS DECISION MUST BE MADE AND CLEARLY COMMUNICATED TO ALLCONCERNED PRIOR TO OPERATIONS COMMENCING.

Table of Contents
I . Policies & Responsibilities
1.1 Policies
1.2 Crew Responsibilities During Well Control Operations
1.3 Training Requirements
1.4 Exemption Process

II. Well Planning Considerations
2.1 Formation Pressure
2.2 Formation Strength
2.3 Well Planning

III. Well Control Principles
3.1 Primary Well Control
3.2 Secondary Well Control
3.3 Tertiary Well Control

IV. Preparation & Prevention
4.1 Preparation of Equipment and Materials
4.2 Well Control Drills
4.3 Pre-recorded Information
4.4 Kick Prevention During Operations

V. Actions Upon Taking A Kick
5.1 Detecting A Kick
5.2 Containment As Early As Possible
5.3 Shut-in Procedures
5.4 Shut-in Period Prior to Well Kill

VI. Well Kill Techniques
6.1 Wait and Weight Method
6.2 Driller’s Method
6.3 Volumetric Method
6.4 Dynamic Volumetric Method
6.5 Stripping
6.6 Bullheading
6.7 Off-Bottom Kill
6.8 Removing Trapped Gas from the BOP
6.9 Decision Flow Charts

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