Anadrill -_2_days_stuck_pipe_1st

Stuck Pipe Prevention Prentice & Hill, LLC First Day

Hydrostatic Pressure ,[object Object],[object Object],[object Object],[object Object],[object Object]

Hole Volumes V = Hole Volume in BBL/FT D = Hole Diameter in INCHES

Pressure - Area Forces F = Force (lbs) P = Pressure (psi) A = Area (sq-in) F f = Force Due to Friction (lbs)  = Coefficient of Friction or Friction Factor F n = “Normal” Force (lbs)

Stuck Pipe ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Solids Induced Pack-off Formation Movement Inadequate Hole Cleaning CAUSES

Solids Induced Pack-off ,[object Object],[object Object],UNCONSOLIDATED FORMATIONS Causes

Pack-off Due to Unconsolidated Formations Prevention ,[object Object],[object Object],[object Object],Plan / Anticipate:

Solids Induced Pack-off ,[object Object],[object Object],[object Object],[object Object],Causes MOBILE / PLASTIC FORMATIONS Formation Extrudes Into Well Bore Due to Overburden Forces. Prevention Proper Well Planning:

Solids Induced Pack-off Causes ,[object Object],[object Object],FRACTURED / FAULTED FORMATIONS Prevention Loose Chunks of Rock Fall into Well Bore Plan / Anticipate

Solids Induced Pack-off Causes ,[object Object],[object Object],OVER-PRESSURED SHALE COLLAPSE Prevention Shale “Pops” Off Wall Due to Pressure Plan / Anticipate

Solids Induced Pack-off Causes ,[object Object],[object Object],[object Object],REACTIVE FORMATIONS Prevention Mud Filtrate Reacts Chemically with Formation Plan / Anticipate

Solids Induced Pack-off Causes ,[object Object],[object Object],[object Object],POOR HOLE CLEANING Prevention Not Removing Cuttings From Well Bore

Differential Sticking Causes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Differential Sticking - Prevention ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Plan / Anticipate

Mechanical / Wellbore Geometry Sticking Causes KEYSEATING ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Prevention

Mechanical / Wellbore Geometry Sticking Causes UNDERGAUGE HOLE ,[object Object],[object Object],[object Object],[object Object],[object Object],Prevention

Mechanical / Wellbore Geometry Sticking Causes LEDGES & DOGLEGS ,[object Object],[object Object],[object Object],[object Object],Prevention

Mechanical / Wellbore Geometry Sticking Causes SHOE JOINT BACKS OFF ,[object Object],[object Object],[object Object],Prevention

Mechanical / Wellbore Geometry Sticking Causes GREEN CEMENT ,[object Object],[object Object],Prevention Run BHA Into Un-set Cement

Mechanical / Wellbore Geometry Sticking Causes JUNK ,[object Object],[object Object],[object Object],Prevention Something Manmade is Loose in the Hole

Mechanical / Wellbore Geometry Sticking Causes CEMENT BLOCKS ,[object Object],[object Object],Hard Cement Falls In From Casing Shoe or From Open Hole Cement Plug Prevention

Mechanical / Wellbore Geometry Sticking Causes LINER & SQUEEZE CEMENTING ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Cementing Yourself in the Hole

MUD ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Mud (continued) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Mud (continued) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Mud (continued) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Influence of Mud Properties on Various Stuck Pipe Mechanisms

Inadequate Hole Cleaning ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Inadequate Hole Cleaning ,[object Object],[object Object],[object Object],[object Object],[object Object],Moderate Angle Wells (30° <Incl < 60°)

Inadequate Hole Cleaning Moderate Angle Wells (30° <Incl < 60°) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Problem Prevention

Inadequate Hole Cleaning Moderate Angle Wells (30° <Incl < 60°) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Problem Prevention

Inadequate Hole Cleaning High Angle Wells (Incl > 60°) ,[object Object],[object Object],[object Object],[object Object],[object Object],Problem Prevention

Inadequate Hole Cleaning ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Anadrill -_2_days_stuck_pipe_1st

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