Schlumberger

Technical Paper: An Alternative Method of Dealing With Pressure: Friction Reducer for Water Packing of Long Horizontal Open Holes in Low-Fracturing-Gradient Environments

Society: SPE
Paper Number: 123155
Presentation Date: 2009
 Download: An Alternative Method of Dealing With Pressure: Friction Reducer for Water Packing of Long Horizontal Open Holes in Low-Fracturing-Gradient Environments (0.51 MB PDF) Login | Register

 

Abstract

Water packing is one of two common techniques to gravel pack openhole completions. This technique relies on high local velocities for gravel transport because it uses a low-viscosity fluid for suspension. The alternative to water packing is the use of a viscous fluid for gravel suspension, typically in conjunction with Alternate Path screens. Both techniques have their justification based on the individual well and reservoir characteristics and have been successful in various completions.

This paper focuses on one of the major risk factors involved in water packing: exceeding fracturing pressure. It also introduces a simplified technique to widen the operational window and minimize the risk of exceeding fracturing pressure.

An alternative method of dealing with the pressure rise during the β-wave uses a friction reducer added to the brine carrier fluid. Results are given from full-scale friction tests conducted in pipe and annular geometries, using the best-candidate friction reducer selected based on laboratory tests. 

Alternate Path is a mark of ExxonMobil; technology licensed exclusively to Schlumberger.

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