Design of Continuous Gauge Near-Bit Stabilizer, Using Optimized Hydraulics and Gauge Geometry in Mishan andAghajari Formation

Document Type : Original Paper

Authors

1 Departmentof Petroleum Engineering, ShahidBahonar University of Kerman, Iran Young Researchers Society

2 Shahid Bahonar University of Kerman, Iran

3 Department of Petroleum Engineering, Sharif University of Technology, Tehran, Iran

Abstract

The main task of drilling the formation by the bit is done via scraping, crushing and grinding. Discharging the fluid from the bit nozzles is done with high pressure which assists to break the rocks. Different parameters affect the bit selection and design for each drilling formation, but the most important one is drillability that depends on hardness of the formation. In this paper, the design of continuous gauge near-bit stabilizer and a novel drill bit design was evaluated by optimizing the hydraulics and gauge geometry. It was found that the design is appropriate for the Aghajari and Mishan formations as the drilling efficiency could be increased. Moreover, some problems of drilling in this formation such as bit balling and high wearing were largely reduced by the presented model.
 

Keywords

References

[1] Barton, S. and Card,K. (2008). “Delivering Steering Success in Problematic Soft Formation Directional Wells.”IADC/SPE Drilling Technology Conference and Exhibition held in Jakarta, Indonesia.
[2] Taylor, M., Murdock, A. and Evans, S. (1996): “High Penetration Rates and Extended Bit Life through Revolutionary Hydraulic and Mechanical Design in PDC Drill Bit Development.” SPE 36435, ATCE, Denver, Colorado.
[3] Ortiz, B. and Mollinedo, H. (1996). “Novel Matrix Drill Bit Design Extends the Envelope for Soft Formation Drilling Applications.” IADC/SPE 36410, IADC/SPE Drilling Technology Conference, Kuala Lumpur.
[4] Doiron, H. and Deane, J. (1982). “Effects of Hydraulic Parameter Cleaning Variations on Rate of Penetration of Soft Formation Insert Bits.”SPE 11058, 57th Annual Fall Technical Conference, New Orleans.
[5] Garcia-Gavito, D. and Azar, J. (1990). “Proper Nozzle Location, Bit Profile, and Cutter Arrangement Affect PDC Bit Performance Significantly.” SPE 20415 SPE Annual Technical Conference and Exhibition, New Orleans.
[6] Slaughter, R. (1985). “Development, Laboratory, and Field Test Results of a New Hydraulic Design for Roller Cone Rock Bits.”SPE 14220, 60th Annual Technical Conference and Exhibition, Las Vegas.
[7] Warren, T. (1982). “The Effect of Nozzle Diameter on Jet Impact for a Tricare Bit.”SPE 11059, 57th Annual Fall Technical Conference and Exhibition, New Orleans.
[8] King, I. (1990). “Hydraulic Optimization of PDC Bits.” paper SPE 20928, SPE/IADC Drilling Conference, Amsterdam,
[9] McKown, G. and Williamson, J.(1986). “An Engineering Approach to Stabilization Selection.” paper IADC/SPE 14766.
[10] Clegg, J. (2006). “Faster, longer, and more reliable bit runs with New-generation PDC cutter” paper SPE 102067. Technical Conference and Exhibition, San Antonio, 24-27 September.
[11] Johnson, S. (2006). “A New Method of Producing Laterally Stable PDC Drill Bits.” paper IADC/SPE 98986 presented at IADC/SPE Drilling Conference, Miami 21-23 February.

Files

History

  • Receive Date: 16 January 2012
  • Accept Date: 12 June 2012

Share

How to cite

Statistics