Basic Casing Design and Casing Point Selection презентация

Basic Casing Design and Casing Point Selection Ashley Fernandes

Objectives On completion of this module the engineer should be able to… Define the different types of casings. Describe the casing point selection process Describe the maximum load casing design method. Demonstrate the bottom up method of casing setting depth initial estimation.

Statement of Standard

Types of Casing Strings

Types of Casing Strings

Types of Casing Strings

Types of Casing Strings

Types of Casing Strings

Types of Casing Strings

Casing Point Selection

Casing Point Selection Criteria

Criteria For Selecting Casing Depths

Other Restrictions On Casing Shoe Depth

Casing Point Selection Criteria

Special Criteria for Conductor

Intermediate Casing - other considerations

Casing Point Selection Criteria

Casing Point Selection Criteria

Casing Point Selection Criteria

Bottom Up Method

Kick Tolerance

Kick Tolerance More assumptions For an Exploration or Appraisal well, we can assume that the kicking formation may have a pore pressure gradient of 10% higher than the mud gradient. In this case a planned mud gradient of 0.5 psi/ft will assume a pore pressure gradient at the kick depth of 0.55 psi/ft. For a development well in a known area, assume that the kicking formation may have a pore pressure which is equal to the mud gradient. In this case any kick taken will be a swabbed kick.

Kick Tolerance

Kick Tolerance

Maximum Load casing Design

Maximum Load casing Design

Steps for Basic Casing Design

Casing Burst Design

Casing Burst Design

Casing Collapse Design

Casing Tension Design