Tri-Axial Casing Design is a completely new version of casing design covering both Bi-Axial and Tri-Axial calculations for bending, collapse and tension stress changes based in the maximum dog leg severity between Well Head and Casing Shoe. Including the option to look up the maximum DLS between any selected depths MD 1 to MD 2. The program picks the maximum DLS between the user inputs.

Tri-Axial Casing Design is linked to Well Trajectory and Azimuth Closure

The program includes a database of over 4138 different joints of casing to choose from (plus the option to add custom Csg Specs)
Unlimited custom casing sizes can be added to the database with user defined casing design specifications

When you set up your design the Tri-Axial design program allows up to 4 different weights grades per section or in the case of Liner installation allows cemented in place casing and a Liner section with 3 different casing specs or 3 tapered Liners.
The program links to a full Directional and Azimuth Closure function which can be imported or input manually.

Triaxial casing design Criteria includes, Land, Shallow Offshore, Deep Water Offshore casing design

• New Cementing Safety Factors and Linear Temperatures at Lead and Tail cement tops plus Design Loads
• 100% mud evacuation for producing condition
• 0% – 100% evacuation selectable for all design conditions
• Drilling Condition
• Producing Condition
• Completely flexible with Feet or Meters for TVD and MTD
• Option of using °F or °C for both Linear and Custom Temperature inputs
• Safety Factor at Mud Gas interface at evacuation point
• Mud Gas Interface indicated on all charts and reports
• Quick view chart viewer for De-Rated Tensile results
• Quick view chart viewer for directional trajectory
• The finalized casing design reports can be emailed directly to the client
• The casing design program includes the option to export your design to a local well file
•  Casing design Calculations.
• For De-rated Collapse Load Collapse curve due to axial loading
• Temperature De-rated Burst and Collapse safety factors calculated
• All safety factors calculated taking old mud or salt water behind casing into consideration.
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Production Condition – 100% mud evacuation with full column of shut in pressured gas/oil to surface and salt water gradient behind casing

Drilling collapse loads are calculated assuming the casing has been partially or fully evacuated of mud (resulting from lost circulation, or a blowout), while drilling below the shoe, with a non-pressured column of gas/oil to the surface (i.e. atmospheric pressure at the surface) and a full column of old MW behind the casing. The user inputs the gas/oil gradient that most closely fits their design for internal pressure gradient. . Production collapse loads are calculated assuming 100% mud evacuation with an un-pressured column of gas/oil to the surface. The old MW that was behind the casing when it was cemented is used for annulus hydrostatic collapse calculations. The user inputs the gas/oil gradient that most closely fits their design for internal pressure gradient.

Cementing Collapse loads are calculated with applicable hydrostatic columns of mud and cement slurries outside the casing and displacement fluid column inside the casing. The small hydrostatic difference of the cement in the shoe joints is ignored and displacement fluid is assumed to the shoe TVD. Cementing collapse is typically a concern with big OD conductors and surface casings.

 

How to import a saved survey

Well Plan trajectory can be imported into triaxial casing design

Download a free trial of Tri-Axial Casing Design

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