GAS RESERVOIR EVALUATION FOR UNDERBALANCED HORIZONTAL DRILLING

Abstract

A set of surface equipment for monitoring the parameters of fluid and pressure while drilling was developed, and mathematical models for gas reservoir seepage and wellbore two-phase flow were established. Based on drilling operation parameters, well structure and monitored parameters, the wellbore pressure and the gas reservoir permeability could be predicted theoretically for underbalanced horizontal drilling. Based on the monitored gas production along the well depth, the gas reservoir type could be identified.

Keywords

Dates

  • Submission Date2013-10-15
  • Revision Date2014-04-10
  • Acceptance Date2014-07-23
  • Online Date2015-01-04

DOI Reference

10.2298/TSCI1405691L

References

  1. Meng, Y., et al., Research on Real Time Monitoring and Reservoir Evaluation Technology while Underbalanced Drilling, Drilling & Production Technology, 34 (2011), 4, pp. 1-4
  2. Hu, Y. et al., Studies on Mathematical Model and Practical Method of Well Testing while Underbalance Drilling (UBD), Journal of Xi`an Petroleum Institute, 17 (2002), 1, pp. 39-41
  3. Tang, S. H., et al., The Method and Application of Reservoir Evaluation Technology while Underbalanced Drilling, Xinjiang Geology, 29 (2011), 1, pp. 103-105
  4. Lage, A. C., et al., Underbalanced Drilling Dynamics: Two-Phase Flow Modeling and Experiments, SPE Journal, 8 (2003), 1, pp. 61-70
Volume 18, Issue 5, Pages1691 -1694