Improvement of mechanical specific energy theory based on effective WOB and torque and its application in M Oilfield

TIANJIN SCIENCE & TECHNOLOGY ›› 2025, Vol. 52 ›› Issue (02): 61-65+70.

• Applied Technology • Previous Articles Next Articles

Improvement of mechanical specific energy theory based on effective WOB and torque and its application in M Oilfield

FANG Ruxuan¹, WU Yongchuan², CHEN Zhizhong², LIU Junbo²

1. CNOOC EnerTech Equipment Technology Co., Ltd. Research & Design Center, Tianjin 300452, China;
2. China Oilfield Services Limited, Tianjin 300459, China

Received:2025-01-09 Online:2025-02-25 Published:2026-01-06

Abstract

Abstract: Since R. Teale first proposed the original mechanical specific energy model,many improved models have been studied and applied. However,most models do not clarify the physical significance of key parameters such as weight on bit （WOB） and torque. This paper introduces the effective WOB and effective torque,and proposes a calculation method for effective WOB and effective torque,which significantly improves the analysis accuracy. An example is used to compare and verify the results.

Key words: effective WOB and torque, improvement of mechanical specific energy, effective rock compressive strength, bit selection, parameter optimization

CLC Number:

TE21

FANG Ruxuan, WU Yongchuan, CHEN Zhizhong, LIU Junbo. Improvement of mechanical specific energy theory based on effective WOB and torque and its application in M Oilfield[J]. TIANJIN SCIENCE & TECHNOLOGY, 2025, 52(02): 61-65+70.

References

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Improvement of mechanical specific energy theory based on effective WOB and torque and its application in M Oilfield

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