WELL CONTROL EQUIPMENT (NEXT NETWORK OF EXCELLENCE IN TRAINING)

WELL CONTROL EQUIPMENT (NEXT NETWORK OF EXCELLENCE IN TRAINING)

Rams

Variable Bore Rams

1.The Variable Bore Ram, or VBR, seals on several sizes of pipe or hexagonal kelly within its specified size range. A typical range is from 5" to 3-1/2" diameter Other size ranges, such as 7" to 4-1/2" diameter, are available upon request.

2.VBRs are not intended for long-term stripping use.

3."Stripping" refers to moving drill pipe vertically within the well while the BOPs remain closed, maintaining a seal around the pipe.

4.During stripping, the drill pipe and larger diameter tool joints are pulled through the packers in fully closed rams. This procedure is typically used in workover and servicing operations using annular BOPs and specialty rams.

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BASIC WELL CONTROL (NEXT NETWORK OF EXCELLENCE IN TRAINING)

BASIC WELL CONTROL (NEXT NETWORK OF EXCELLENCE IN TRAINING)

•Lecture Contents;

–Lecture Objectives,

–Introduction,

–Primary Control,

–Warning Signs of Kicks,

–Secondary Control,

–Well Killing Procedures,

–Kill Sheet.

•Lecture Objectives

–At the end of this lecture YOU will be able to:

•Define the term “kick”,

•State warning signs of a kick,

•Describe the drawback of uncontrolled kicks,

•State primary and secondary control procedures,

•List well killing procedures and the various calculation to fill-up the well control work sheet.

•Introduction;

–In simple terms, kick occur when the formation pressure exceeds the mud hydrostatic pressure,

–The resultant negative differential pressure is forced into the wellbore,

–If the flow of the kick is controlled then the well is killed,

–Blow-out occurs when the kick (influx) is uncontrolled,

–The rig crew must be alert all times in order to take immediate action to bring the well under control.

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CEMENTING TECHNOLOGY (TRAINING SOLUTIONS)

CEMENTING TECHNOLOGY (TRAINING SOLUTIONS)

v  Lecture Contents:

Ø  Lecture Objectives,

Ø  Primary Cementing

Ø  Cement Classification,

Ø  Cement Additives,

Ø  Casing Hardware,

Ø  Cement Evaluation

Ø  Remedial Cementing Techniques

Ø  Cement Plug

Ø  Squeeze Cementing.

v  Lecture Objectives:

At the end of  this course,  YOU will be able to:

Ø  Understand the difference between primary and secondary cementing,

Ø  Identify classes of cement appropriate for different depth range,

Ø  Explain how the properties of cement may be altered by the use of additives,

Ø  Identify basic casing hardware and describe ways to assist in the preparation of a cement job,

Ø  Describe cement bond evaluation techniques

Ø  Describe the remedial cementing techniques and calculate the balanced plug,

v  Introduction;

ü Primary cementing is the introduction of cementacious material into the annulus between casing and openhole to:

Ø  Provide zonal isolation,

Ø  Support axial load of casing string and other strings to be run later,

Ø  Provide casing protection,

Ø  Support the borehole,

ü Secondary/or Remedial jobs:

Ø  Squeeze cementing,

Ø  Cement plug.

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CASING DESIGN PRINCIPLES (TRAINING SOLUTIONS)

CASING DESIGN PRINCIPLES (TRAINING SOLUTIONS)

•Lecture Contents;

–Lecture Objectives,

–Definitions,

–Casing Design Criteria,

•Collapse,

•Burst,

•Tension.

•Lecture Objectives

–At the end of this lecture YOU will be able to:

•Be familiar with the design criteria that is taken into consideration when a casing string is to be designed with respect to:

–Collapse,

–Burst,

–Tension.

•List the design safety factors.

•Definition;

–Casing design involves the determination of factors which influence the failure and the selection of the most suitable casing grades and weights for specific operations,

– The casing program should also reflect the completion and production requirements,

–A good knowledge of the stress analysis and the ability to apply it are necessary for the design of casing strings.

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CASING POINT SELECTION (Training Solutions)

CASING POINT SELECTION (Training Solutions)

Lecture Contents;

–Lecture Objectives,

–Why Do we Set Casing?

–Exploration Well Casing Setting Depths,

–Development Well Casing Setting Depths,

–Exploration versus Development (Same Target),

–Restrictions on Casing Shoe Depth,

–Special Criteria,

–Example.

Lecture Objectives;

–At the end of this lecture YOU will be able to:

•State the two Drilling related reasons for running casing,

•State the difference in selecting casing points for exploration and development wells,

•Describe functions of different type of casings

•State restrictions that govern shoe depth selection,

Calculate the minimum conductor setting depth offshore to enable returns to be taken to the flowline.

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KICK TOLERANCE (Network Of Excellence in Training)

KICK TOLERANCE (Network Of Excellence in Training)

Lecture Contents;

• Lecture Objectives,
• Definition,
• Gas Behaviour,
• Before Circulation,
• Gas at Half Way up the Hole,
• Gas at Surface,
• Gas Volume at Casing,
• Gas Volume at TD,
• Example,
• Drilling Kick Tolerance.

Lecture Objectives

• At the end of this lecture YOU will be able to:
• Define kick tolerance,
• Describe gas behaviour in various scenarios,
• Be familiar with kick tolerance calculation as the main concept of the casing design process,
• List kick tolerance volumes versus hole sizes.
• Calculate the optimum casing setting depths when lithological column, predicted pore pressures and fracture gradients, are given.

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FORMATION PRESSURES (Network Of Excellence in Training)

FORMATION PRESSURES (Network Of Excellence in Training)

 

Lecture Contents;

• Lecture Objectives,
• Introduction,
• Hydrostatic pressure,
• Pore pressure,
• Overburden pressure,
• Formation fracture gradient,
• Causes of abnormal pressure,
• Geopressure predication

Lecture Objectives;

• At the end of this course YOU will be able to:
• Define various formation pressures including:

                – Hydrostatic pressure,
                – Overburden pressure,
                – Pore pressure,
                – Formation fracture gradient.

• Use various techniques and methods to compute them,
• Plan well pressure profile applying safety margin,
• Understand how these pressures were generated,
• Describe some of the prediction techniques.

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WELL PLANNING OVERVIEW (TRANINING SOLUTIONS)

WELL PLANNING OVERVIEW (TRANINING SOLUTIONS)

Contents;

• Session Objectives,
• Introduction,
• Well Planning Requirements,
• Classification of Well Types,
• Data Gathering,
• Well Plan Format.

Session Objectives;

• By the end of this session, you should be able to:
• State the basic requirements for well planning,
• List main well types,
• List information included in a well plan and identify sources,
• Describe format of a well plan generally available prior to drilling.

Introduction;

• Well Planning is one of the most demanding areas of Drilling Engineering,
• It requires the integration of various engineering disciplines, corporate polices and personal experience,
• The  process may vary within drilling industry, but the final aim is to drill a well safely that satisfies the objectives set out in the well proposal,
• Well Proposal is usually issued by Petroleum Engineers and describes well objectives.

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