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Title: Tests find hammering, fluid cutting, erosion cause float shoe failures

The results of a systematic test program to evaluate float equipment performance are presented. The testing has destroyed, over an eightmonth period, 160 float valves, float shoes and float collars. A new float valve design with greater resistance to failure has been developed as a result of the testing. New float collars and float shoes are expected to provide the operator with a failure rate of less than 1 1/2% when used within design limits and under normal cementing conditions. Further testing objectives include: extension of operating temperature limits to include deep well and geothermal conditions, and evaluation of the effects of more abrasive mud and cement systems.
Authors:
Publication Date:
OSTI Identifier:
6504436
Resource Type:
Journal Article
Resource Relation:
Journal Name: Oil Gas J.; (United States); Journal Volume: 83:3
Research Org:
Weatherford Int., Houston, TX
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; FIELD PRODUCTION EQUIPMENT; WEAR; ADDITIVES; CEMENTS; DRILLING FLUIDS; EROSION; EXPERIMENT PLANNING; FAILURE MODE ANALYSIS; FLOTATION; FLOW REGULATORS; HIGH TEMPERATURE; PERFORMANCE TESTING; BUILDING MATERIALS; CONTROL EQUIPMENT; EQUIPMENT; FLUIDS; MATERIALS; PLANNING; SEPARATION PROCESSES; SYSTEM FAILURE ANALYSIS; SYSTEMS ANALYSIS; TESTING 020300* -- Petroleum-- Drilling & Production; 030300 -- Natural Gas-- Drilling, Production, & Processing