Drilling & Cementing Products
DiverterPlus’ CemVert+ LCM products are temporary diverting materials used to mitigate cement fallbacks, precondition sweeps, and aid in cement squeezes. During placement, CemVert+ is a solid degradable polymer material capable of bridging across the near-wellbore region. After successfully preventing losses, the diverter is designed to hydrolyze to a clear, non-hazardous liquid. This process is driven initially by temperature and pressure, however once contacted by cement the product hydrolyzes rapidly, resulting in no-to-minimum effects on cement bonding.
- Regain Circulation in sever loss conditions
- Reduced risk of uncemented void spaces leads to better bonding
- Minimal formation damage due to degradability of product
- No additional deployment equipment
- No remediation/cleanup operations
- No hazardous or toxic ingredients
- No fluid incompatibility
Standard Treatment Parameters
- Concentrations: 0.125-1.0 lb. per gallon
- Blends for various fluid loss conditions
- Low density allows for placement at low circulation rates
- Compatible with various BHA’s
- Versatile Delivery Packaging
- Customers need not maintain inventory
- Pressure not required to maintain sealing
This image portrays how one of DiverterPlus’s specialized products effectively packs and plugs a clay formation.
A key component in improving drilling efficiency and controlling costs is stopping or preventing lost circulation. This is accomplished by the many available options of lost circulation material (LCM), however most LCM types available in the market today do not address the amount of formation damage or the negative impact on cement bonding they can cause. Through lab testing and field applications, degradable LCM has shown to be a cost-effective solution for not only stopping losses but also in addressing these two issues.
A Well in Midcontinent with similar lost circulation problems benefited from the deployment of CemVert+ which proved to be effective for plugging various fracture widths at different temperatures while maintaining stability to cure losses then degraded over time to mitigate reservoir damage and improve cement bonding as shown.