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1、International Well Control Forum,1,Blowout Prevention Course For IWCF Certificate,Drilling Staff Training Center PRC,International Well Control Forum,2,SELF INTRODUCTION My name is Wang Rui-e. I graduated from Petroleum University in 1989 and majored in Drilling Engineering. I work in Drilling Staff
2、 Training Center of Shengli Petroleum Administration Bureau. I have been engaged in well control instruction for more than ten years. I hope you would like my instruction. Thank you very much! Tel: +86-546-8723154 E-mail: ,International Well Control Forum,3,International Well Control Forum,4,Interna
3、tional Well Control Forum,5,International Well Control Forum,6,Courses Offered, Foreword The Frequently Used-words In Well Control The Basic Concepts of Well Control Pressure Concepts and Calculation Causes of Kicks & Kick Detection Shut-in Procedures Gas Characteristics and Behavior Well-kill Techn
4、ology Special Situations (Optional),International Well Control Forum,7,Foreword 前言,International Well Control Forum,8,International Well Control Forum,9,Control of formation pressure encountered while drilling wells is of particular importance in todays oil industry.One indication of its importance
5、is the fact that regulatory bodies in the world require personnel either to be trained in well control or be tested to prove their competence. Unquestionably, training plays an important role in successful well control, for a drilling crew that knows and understand the principles and technical proce
6、dures of well,International Well Control Forum,10,control is a crew that is less likely to experience a well blowing out of control. Interestingly, a recent study of blowout statistics covering the last 36 years in the U.S.Gulf Coast, revealed that “blowout continue to occur at about a constant rate
7、” the study deduced that most blowouts happened because (1) A formation with higher-than-expected pressure was penetrated. (2) Formation fluids were swabbed in during a trip.,International Well Control Forum,11,(3) Formation breakdown and lost circulation occurred because the mud weight was too high
8、 or the crew lowered the drill string into the hole too rapidly. The wells then blew out . If the BOPs had been closed, would have worked correctly, or had been installed as planned, the kicks could have been controlled. It is therefore just as vital as it ever has been to continue training drilling
9、 crews in the principles of well control.,International Well Control Forum,12,This subject is intended to help all personnel who are concerned with well control-rotary helpers, drillers, toolpushers, supervisors, company representatives, or anyone whose job takes him or her directly onto a rig locat
10、ion. The courses present a practical approach to well control in that it emphasizes the things a rig crew should know and be able to do to control a well. It is also used as a basic knowledge by those who attend well-control courses conducted by many training organizations.,International Well Contro
11、l Forum,13,Blowout ! Uncontrolled Flow From a Well,Risk to human life Risk to the environment Loss of company & contractor image & reputation Loss of assets -potential recovery costs up to US$ 100 million - potential damage to reservoir in excess of US$ 100,International Well Control Forum,14,What i
12、s the Basic Cause of Blowout ?,The Loss of Primary Control! Where are we most vulnerable? DURING ROUND TRIPS!,International Well Control Forum,15,Blowout Occurrence by Operational Phase,International Well Control Forum,16,Overview of Occurrences of Loss of Primary Control,Swabbing is the Primary Cau
13、se,International Well Control Forum,17,Why Do We Lose Primary Control?,Main reason: Human error -Lack of awareness -Failure to follow procedures -Lack of skills -Failure to communication Swabbing is the responsible for between 30% -40% of all blowouts,International Well Control Forum,18,Well control
14、 incidents (Gulf Operator),13 incidents in 1998 ( 6 onshore + 7 offshore) 4 while drilling 6 while tripping 1 after acid job 1 after jetting 1 installing wellhead 46% During Round Trips,International Well Control Forum,19,Why Do We Lose Secondary Control?,Main reason are: Equipment Failure Human Err
15、or -Failure to follow procedures -Lack of knowledge -Lack of skills,International Well Control Forum,20,Overview of Occurrences of Loss of Secondary Control,International Well Control Forum,21,Think of danger in time of peace!,International Well Control Forum,22,The Frequently Used-words In Well Con
16、trol,International Well Control Forum,23,The Basic Concepts of Well Control,International Well Control Forum,24,Shut-in procedures,International Well Control Forum,25,Flow Checks While Drilling,1. Call an alert 2. Raise the kelly above the table to clear the first tool joint( or whatever positioning is required to ensure that a tool joint is not in the pack off area). 3. Stop the pump 4. Divert the flow l
