This paper aims to evaluate the applicability of Resonance Enhanced Drilling (RED) technology to coring operations. A series of coring experiments on sandstone and granite using diamond impregnated and polycrystalline diamond compact (PDC) bits are carried out on a specially designed vertical laboratory drilling rig. We present a comparison between the efficiency and quality of cores obtained using RED technology against conventional coring. Based on this analysis, improvements in penetration rates of up to 180% compared to conventional coring for the same drilling conditions were achieved. All cores retrieved are in good condition showing consistent diameters, generally smooth core surfaces and no evidence of fracturing or other visible core damage. Our preliminary assessment suggests that the RED coring technology provides significant improvements in Rate Of Penetration (ROP), while maintaining consistent core quality compared to conventional coring.
Bibliographical noteThe authors would like to acknowledge the support of Oil & Gas Innovation Centre (OGIC), the project manager Ms Mhairi Begg, and Volcanic Basin Petroleum Research AS (VBPR). Siqi Li would like to acknowledge the support of National Natural Science Foundation of China (No. 51704074) and Youth Science Foundation of Heilongjiang Province (No. QC2018049) and Talent Cultivation Foundation (No. SCXHB201703; No. ts26180119; No. td26180141) and Youth Science Foundation (No. 2019QNL-07) of Northeast Petroleum University. The authors also would like to acknowledge the generous donation of coring drill-bits from Halliburton and Jan-Erik Rosberg for use in the project, and the preliminary work by graduate student Diana Xiuhnelli Herrera Solis.
- core quality assessment
- experimental studies
- Core quality assessment
- Experimental studies