DRILPLEX HDD Viscosifier Stabilizes Collapsing Formation | Schlumberger
Tech Report
Location
United States, North America, Onshore
Details

Nevada
US


DRILPLEX HDD Viscosifier Rheology
 600 rpm   110 cP 
 300 rpm    81 cP
 Plastic viscosity    29 cP
 Yield point    52 lbf/ft2
10 s    50 lbf/ft2
10 min    52 lbf/ft2
Background

When Schlumberger learned an operator was concerned about hole cleaning and packing off in a key drill hole being cored from surface, DRILPLEX HDD viscosifier was recommended by M-I SWACO, a Schlumberger company, for its properties of highly shear-thinning ability and ceasing to flow as it enters fractures of spaces between the rock.

DRILPLEX HDD Viscosifier Stabilizes Collapsing Formation

Problematic well drilled to TD with 80% core recovery

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Following approximately 800 galUS [3,032 L] of the viscosifier being pumped, drilling resumed and torque decreased from 3,000 psi to 1,500 psi [20.7 MPa to 10.3 MPa] and the well was drilled to planned TD successfully. The DRILPLEX HDD viscosifier achieved hole cleaning and target viscosity, holding the gravel in place.

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