Real-Time Monitoring of Piezoresistive Smart Cement To Verify Operations

A field well was designed, built, and used to demonstrate the concept of real-time monitoring of the flow of drilling mud and smart cement and the hardening of the cement in place. A new method has been developed to measure the electrical resistivity of the materials with the two-probe method. Using the new concept, it has been proved that resistivity dominated the behavior of drilling fluid and smart cement.

Introduction

With reported failures and growing interest in environmental and economic concerns in the oil and gas industry, integrity of the cement sheath is of major importance. Oilwell cement serves many purposes in cemented oil and gas wells.