Cement Top Up Systems
Our cement top-up system (CTU) provides the capability to place cement in the annulus between the conductor pipe and the open-hole section at the point of installation.
Successfully cementing the conductor to the right depth can be essential to the long term integrity of the well system.
The Claxton cement top-up (CTU) system offers the capability of injecting cement into the annulus between the conductor pipe and the open-hole section at predefined locations as a back up to the primary cement job. CTU is used to overcome the issues associated with poor formation conditions, such as soft soils and the inherent loss of cement.
Our cement top-up system consists of a cementing line attached to the conductor which is then run together to the required depth. The line is terminated with a spreader which introduces the cement at the base of the problem area when pumping commences.
A series of pressure sensitive burst discs are fitted within the cement line and are arranged to blow as the cement level rises ensuring uniform cementing. Monitoring of the pumping pressure provides evidence of successful cementing.
The CTU can also be run with a Claxton camera system to provide high quality visual verification of cementing to the mudline.