Csg Operations

This article describes the mandrel casing hanger make-up and running proedures. Mandrel Casing Hanger Make-up The “total” hanger will consist of: bottom pupjoint MCH (Mandrel Casing Hanger) top pupjoint. The bottom pupjoint has to be made-up on the MCH by the bucking machine to the optimum torque. The top pupjoint should be made up to Mandrel Casing Hangers

The hole conditioning guidelines described in this article should be adhered to in order to safely and successfully run the casing/ liner into the open hole. Structural Casing Driven or pre-installed: No hole conditioning necessary Conductor Casing Hole section drilled with seawater/high viscosity sweeps/native clay system with returns to sea bed At casing point circulate Hole Conditioning before Running Casing or Liner

Colour Codes for New Casing/Liner All new casing shall be colour coded for yield as per API specifications 5CT. API Casing/Liner Grade Identification Colour Codes API Grade Markings On Pipe Body Markings on Coupling P-110 One white band White coupling L-80 N-80 One red band and one brown band One red band Red coupling with Casing and Liner Colour Codes

Preparation for Running Casing and Liner: 1. ENSURE that all casing/liner and associated equipment is delivered to the well site allowing sufficient time for preparation prior to running. 2 ENSURE that when racking the casing/liner the pin and box ends are oriented correctly for running. Also check casing grade, weight and size. IF… mixed strings Casing and Liner Running Preparation Guidelines.

This article describes the casing and liner handling guidelines. Safety Requirements ALWAYS wear gloves and eye protection when cleaning joints EXERCISE CAUTION when rolling casing/liner across racks to ensure feet and hand do not get trapped NEVER walk under loads suspended in the elevators or high line under crane NEVER get between loads and another Casing and Liner Handling

This article describes the various responsibilities for casing running operations and quality control. Responsibilities for casing/liner preparation, hole conditioning and mud conditioning prior to running are listed in the following table: Action Execution Quality Control Ordering Casing/Liner, accessories and backup Equipment and Logistics Supervisor Operations Engineer Order running equipment Drilling Supervisor Operations Engineer Drilling Supervisor Casing Operations Responsibilities

Centraliser spacing and float equipment for Vertical wells:   Hole Size, in Casing Size, in Number of Centralizers Shoe Track Design Remarks 26 20 2 1 centralizer over a stop collar on the shoe joint Use a B&W self fill shoe Install the DOS B&W lock down collar above the shoe Install one rigid centralizer Example Casing Centralisers Programme

This article describe the basics of external casing packers and the setting procedure. Basics of Operation ECP’s are inflation tools with expansion and sealing capabilities allowing a flexible elastomer element to pack off the annular space between casing or between casing and open hole. When inflated with either mud, cement or viscous fluid, the element External Casing Packers

Preparation, planning and procedure for running 30″ conductor. Job Preparation Note: Well must be drilled to depth.  Plan on top 30” conductor pipe being 1.285m down from top of cellar.  Do not drill extra depth. Weld stab in float shoe to first joint. Ensure both cellar jet and submersible pump are working properly. While tripping Procedure For Running 30” Conductor

1. Hold safety meeting with crews before starting running the liner and report in IADC. 2. Make up plug dropping head on single and lay in v door. Prepare 10m of chicksan lines. 3. Make up and bakerlock shoe track. Test floating equipment Make up torques: 7″ 35# nvam, min 10850 ft.lbs Opt 11950 ft.lbs 7″ Liner Operations (Running and Cementing)