Key technology for drilling and coring in southern Songliao Basin

CAO Huaqing; FENG Yunchun; YANG Yichun; ZHANG Yanchao and WANG Dianxue; ${author.authorNameEn}

doi:10.12143/j.ztgc.2021.11.008

2021 Vol. 48, No. 11

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CAO Huaqing, FENG Yunchun, YANG Yichun, ZHANG Yanchao and WANG Dianxue, . 2021. Key technology for drilling and coring in southern Songliao Basin. DRILLING ENGINEERING, 48(11): 50-56. doi: 10.12143/j.ztgc.2021.11.008

Citation:

CAO Huaqing, FENG Yunchun, YANG Yichun, ZHANG Yanchao and WANG Dianxue, . 2021. Key technology for drilling and coring in southern Songliao Basin. DRILLING ENGINEERING, 48(11): 50-56. doi: 10.12143/j.ztgc.2021.11.008

Key technology for drilling and coring in southern Songliao Basin

1. East China Petroleum Engineering Company, SINOPEC, Nanjing Jiangsu 210019, China;
2. Northeast Oil and Gas Branch of SINOPEC, Changchun Jilin 130062, China

Received Date: 27 January 2021

Revised Date: 15 September 2021

Abstract

Abstract

To effectively solve the southern Songliao Basin oil and gas reservoir core bit selection difficulties， low rate of penetration and unstable core recovery， the core barrel and the core lifter were compared and matched， the core bit type was selected and the case-dependent core bit was investigated through the analysis of the geological characteristics of the coring interval， the XRD element component proportion， and the formation drillability. The coring assembly and coring parameters were optimized， and the coring process for different reservoirs was improved. The selected coring tool and the new coring bit were used in multiple wells with the average core recovery more than 98.98%， and the highest mechanical drilling speed up to 6.03m/h. The application of the optimized series of coring bits and the complete key technologies has solved the technical difficulties in coring in the southern Songliao Basin reservoir， which can provide reliable reference and technical support for subsequent coring.
- Songliao Basin /
- directional well /
- core recovery /
- coring /
- rate of penetration /
- BHA /
- bit selection

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References

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