Cement is pumped around casing and liner strings to anchor the pipe in the wellbore ensuring it has good mechanical bonding with both the formation and previous strings of pipe. In addition, the cement provides hydraulic isolation from high pressure zones and plays a critical part in the well construction process and the well control procedures used to construct the well. When cementing the final string across the reservoir the quality of the cement is critical since it provides zonal isolation across the reservoir and helps seal the production casing annulus from the reservoir ensuring no hydrocarbons are allowed to percolate or flow up to the wellhead.
Challenges associated with cementing:
- High torque
- Poor centralization
- Inability to rotate or reciprocate the liner/casing
- Poor cement bond
Rubicon offers a wide range of technologies and expertise to help minimize problems related to cementing performance. Our Applications Engineering team work with the drilling engineer using our in-house centralizer placement program to ensure the optimum placement of our centralizers on the string. Best practice associated with achieving a good quality cement job is to reciprocate and/or rotate the string during cementing operations. Our technology portfolio combined with our team of experienced professionals help reduce risk, mitigate unplanned costs and improve overall performance.