The newly re-designed DCMS Downhole Corrosion Monitoring System provides continuous corrosion history of downhole tubing. The DCMS™ tool is another Cosasco innovation, and the only tool available which provides recorded corrosion and temperature data for the hostile conditions of downhole operation. The sensitivity of the system enables the film persistence of inhibitors to be evaluated in actual operating conditions, something that was not possible prior to the development of the DCMS™.
DCMS™ tool may be attached to a variety of wireline approved running tools for insertion into the production well at the start of testing and retrieval from the well at the end of the testing period. The DCMS™ tool can be set at any required depth — wherever the most critical corrosion regions are located. Several DCMS™ tools may be run simultaneously in a well, in order to obtain corrosion data for the different depths, while under the same operating conditions.
An optional coupon holder assembly consisting of up to nine metal loss strip, pre-stressed or tensile coupons for subsequent analysis of material degradation due to pitting and stress corrosion cracking, can be attached to the sucker rod connection of the Downhole Tool. It also acts a secondary corrosion rate measurement to compare with the ER probe measurement. See DCHA data sheet for more details.