Successful Well Design and Remedial Cementing By Top Squeeze Method at Steamboat, NV, USA

摘要

Properly cementing geothermal well casing strings is critical to protecting casing material and maintaining mechanical integrity for the duration of the well's life. Operators and regulators are collaborating on strict well design to ensure mechanical integrity prior to permitting the well's construction and operation. Well, casing, and cement engineering of geothermal wells must consider geologic conditions in order to drill and operate the well. These criteria include expected reservoir geochemical conditions, pressure, temperature, and zones of lost circulation. This paper serves as a successful case study of well design, construction and implementation of the top squeeze remedial cementing method in the Steamboat geothermal field, in fractured and potentially corrosive reservoir. We cite several previous case studies in the literature which serve as continuing examples of how to manage and succeed in challenging geothermal environments.