Foreword
Introduction
1 Scope
2 Functions of cementing float equipment
3 Float equipment performance criteria
3.1 General
3.2 Durability under downhole conditions
3.3 Differential pressure capability from below
3.4 Ability to withstand force exerted through cementing
plugs from above
3.5 Drillability of the equipment
3.6 Ability to pass lost circulation materials
3.7 Flow coefficient of the valve
3.8 Reverse-flow resistance of casing fill-up valves
4 Apparatus and materials
4.1 Flow loop
4.2 Circulating test fluid
4.3 High-temperature/high-pressure test cell
5 Durability test
5.1 Test set-up
5.2 Test categories
5.3 Procedure
6 Static high-temperature/high-pressure test
6.1 Test categories
6.2 Procedure
7 Test results
Annex A (informative) Results of performance tests on
cementing float equipment
Bibliography