Use of the jet-type fluid hammer for increasing ROP at Well ZK01-2

GUO Qiang; WENG Wei; YUAN Wenzhen; ZHANG Delong; YANG Peng; ZHANG Jiefeng and CHEN Xiaohua; ${author.authorNameEn}

doi:10.12143/j.ztgc.2021.10.007

2021 Vol. 48, No. 10

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Article navigation > DRILLING ENGINEERING > 2021 > 48(10): 56-61

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GUO Qiang, WENG Wei, YUAN Wenzhen, ZHANG Delong, YANG Peng, ZHANG Jiefeng and CHEN Xiaohua, . 2021. Use of the jet-type fluid hammer for increasing ROP at Well ZK01-2. DRILLING ENGINEERING, 48(10): 56-61. doi: 10.12143/j.ztgc.2021.10.007

Citation:

GUO Qiang, WENG Wei, YUAN Wenzhen, ZHANG Delong, YANG Peng, ZHANG Jiefeng and CHEN Xiaohua, . 2021. Use of the jet-type fluid hammer for increasing ROP at Well ZK01-2. DRILLING ENGINEERING, 48(10): 56-61. doi: 10.12143/j.ztgc.2021.10.007

Use of the jet-type fluid hammer for increasing ROP at Well ZK01-2

1. Beijing Institute of Exploration Engineering, Beijing 100083, China;
2. Chinese Academy of Geological Sciences, Beijing 100037, China;
3. No.4 Geological Team of Hebei Coalfield Geological Bureau, Zhangjiakou Hebei 075100, China

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Corresponding author: ZHANG Delong, tgszdl@126.com

Received Date: 01 February 2021

Revised Date: 08 April 2021

Abstract

Abstract

In deep geothermal mining， granite formation encountered in the drilling process will lead to low ROP， high bit consumption， and long drilling time due to its poor drillability， high density and hardness， and strong abrasiveness. In order to improve drilling efficiency， and reduce drilling time and cost， jet-type fluid hammer drilling was used with roller cone bits to efficiently break hard rock formations in geothermal resources survey. At the same time， various drilling process parameters such as displacement， weight on bit， rotation speed， were optimized and field tested for multiple times. Application results showed that for the same footage drilled in hard rock formations， jet-type fluid hammer drilling increased drilling efficiency by 30% over conventional drilling， which greatly increases the mechanical drilling speed in hard rock formations， and effectively increases drilling efficiency， achieving high-efficiency rock breaking. It can provide important technical support for drilling speeding up and increasing drilling efficiency in granite and other hard rock formations.
- hard rock formation /
- jet-type fluid hammer /
- parameter optimization /
- speed up drilling /
- cone bit /
- geothermal resources survey

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References

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