Extensive results from field tests in the Rocky Mountain area show how cement bonding may be improved through the use of a spacer, wash, and thixotropic cement. These results are the culmination of nearly three years field work undertaken to determine what factors affect bonding and what methods or materials could be used to consistently improve the cement-to-pipe and cement-to-formation bond.

This paper discusses the recognized conditions associated with poor cement bonding and the materials that were used alone and in combination to improve cement bonding. Bond logs and other data are presented to show the results obtained through the use of a spacer, wash, and thixotropic cement. Other techniques used to improve cement jobs are briefly discussed.

Keywords:
cement formulation, drilling fluid property, cement property, cement and bond evaluation, drilling fluid chemistry, drilling fluid management & disposal, cement chemistry, casing and cementing, bond log, drilling fluid formulation
Subjects:
Pressure Management, Drilling Fluids and Materials, Casing and Cementing, Well control, Drilling fluid selection and formulation (chemistry, properties), Drilling fluid management & disposal, Cement formulation (chemistry, properties), Cement and bond evaluation
Copyright 1980, American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc.
You can access this article if you purchase or spend a download.