METHOD AND APPARATUS FOR DETERMINING RESERVOIR CHARACTERISTICS

摘要

A downhole tool for collecting data from a subsurface formation is disclose d. The tool is provided with a probe for testing and/or sampling an adjacent formation. The tool is also provided with a protector positioned about the probe for engagi ng and protecting the sidewall of the bore hole surrounding the probe. The protecto r prevents deterioration of the wellbore during the testing and/or sampling by the prob e.