Near Real-Time Monitoring of PDC Bit Condition and Associated NPT Mitigation Using Online Alkene Detection
- M. Regan (GEOLOG International) | E. Carcione (GEOLOG International) | A. Martocchia (GEOLOG International)
- Document ID
- Society of Petroleum Engineers
- IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, 27-29 August, Bangkok, Thailand
- Publication Date
- Document Type
- Conference Paper
- 2018. IADC/SPE Asia Pacific Drilling Technology Conference
- 1.10 Drilling Equipment, 1.5 drill Bits, 1.6 Drilling Operations, 7.2.1 Risk, Uncertainty and Risk Assessment, 7 Management and Information, 1.6 Drilling Operations, 1.5 drill Bits, 7.2 Risk Management and Decision-Making
- life, MSE, NPT, bit, alkene
- 2 in the last 30 days
- 152 since 2007
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This paper will present an innovative new methodology for realtime monitoring of bit condition – and hence drilling efficiency - using surface measurement of alkene gases artificially created at-bit by the bit as its condition deteriorates.
A drop in ROP can be an effect of a variety of causes, often disparate in nature. Can performance be improved by a change in drilling parameters and, if so, for how much further will these parameters remain effective? Is there some form of drilling dysfunction that is resulting in inefficient transfer of energy into drilling action? Is there a change in lithology and, if so, is the bit still appropriate and viable in this new formation? Or is the bit simply approaching the end of its useful life through wear earlier than anticipated, in which case at what point does it become less economic to continue drilling at low ROP and POOH instead?
The decision to POOH to change a bit that is perceived to be under-performing can be costly if the bit is found to be in workable condition and the trip is therefore premature. Unnecessary trips are a major source of non-productive time (NPT) so any trusted source of indicative information on bit condition adds valuable context and confidence to operational decision-making.
Realtime monitoring of contaminant alkenes provides timely indications to drillers of the degree of bit wear, mitigating invisible lost time (ILT) through excessive prolongation of an ineffectual dulled bit run, and reducing the risk of its potentially catastrophic failure. Field-based case histories are presented supporting the complementary relationship of alkene generation to other indicators of inefficient drilling, how alkene presence can assist in drilling dysfunction diagnosis, and a prototype of a software application based on alkene levels that informs decision-makers of the ‘tipping point’ at which objective commercial factors support pulling a dull bit.
|File Size||1 MB||Number of Pages||11|
Reitsma, M.J. and Harlow, C.J. 2016 Real-time detection of drill bit metamorphism for accurate interpretation of hydrocarbon shows. AAPG/SEG International Conference and Exhibition, Barcelona, Spain, 3-6 April 2016 pp.96-98 doi.org/10.1190/ice2016-6461625.1
Strapoc D., Inan D. and Villegas, E. 2017 Artificial Alkenes and Alkanes Generated During Drilling: Evidence and Impact on Petroleum Exploration 28th International Meeting on Organic Geochemistry Florence, Italy, 17-22 September 2017 http://imog2017.org/wp-content/uploads/2017/04/115.pdf
Carcione, E., Easow, I., and Chiniwala, B. 2017. Alkenes Detection from Drill Bit Metamorphism and Real-Time Geochemical Elemental Analysis on Drill Cuttings Aids Drilling Optimization and Geo-Steering in Tight Unconventional Laterals. Unconventional Resources Technology Conference, Austin, Texas, USA, 24-26 July 2017 URTeC: 2697162
Timonin, V.V., Smolentsev, A.S., Shakhtorin, I.O., Polushin, N.I., Laptev, A.I. and Kushkhabiev, A.S. 2017 Causes of wear of PDC bits and ways of improving their wear resistance IOP Conference Series: Earth and Environmental Science, Vol 53, Conf. 1 doi:10.1088/1755-1315/53/1/012027
Kuru, E. 1990 Effects of Rock/Cutter Friction on PDC Bit Drilling Performance: An Experimental and Theoretical Study. LSU Historical Dissertations and Theses, 4927 http://digitalcommons.lsu.edu/gradschool_disstheses/4927