Spacer Fluid for Shale Gas Well Cementing ( CleanSpacer )
-
Challenges in Shale Gas Drilling- After drilling accomplished, the wellbore annular is full with drilling mud. Cementingshall commence at the middle of annular and displace to the direction of both sides (wellbore and casing wall). If displacing force and friction come to a stabilized balance, the drilling mud shall partially residue.
- For shall gas drilling, to avoid wellbore collapse, the OBM shall be applied to enhance and secure its general engineering quality. If the debris or oil are not thoroughly cleared off, the cementing quality shall be consequently influenced.
-
CleanSpacer Description- CleanSpacer is composed of high-efficient Oil based flushing fluid and reverse wetting spacer agent.
- CleanSpacer features in good demulsification on OBM and good flushing effect on mud cake.
- CleanSpacer is compatible with water-in-oil drilling fluid and cementing, causing no any viscous, flocculentand deposit.
Characteristic:
- Effective isolation between OBM and cement;
- Thoroughly cleaned oily contents adheringto wellbore and casing wall.
- To enhance displacing efficiency at a lower rate.
- To avoid pollution to drilling and cementing fluid, and to avid from viscous and flocculent effect.
CleanSpacer - Configuration
| CleanSpacer | Flushing Fluid | Water+30%WH-8 |
| Spacer | Water+15%WH-8+2%WH-2+30%Quartz Sand |
CleanSpacer Lab Test
