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Application of an innovative ridge-ladder-shaped polycrystalline diamond compact cutter to reduce vibration and improve drilling speed.
Science Progress ( IF 2.1 ) Pub Date : 2020-06-26 , DOI: 10.1177/0036850420930971
Dou Xie 1 , Zhiqiang Huang 1 , Yuqi Yan 1 , Yachao Ma 1 , Yuan Yuan 2
Affiliation  

Polycrystalline diamond compact bits have been widely used in the Oil and Gas drilling industry, despite the fact that they may introduce undesired vibration into the drilling process, for example, stick-slip and bit bounce, which accelerate the failure rate and lead to higher drilling costs. First, we develop an innovative ridge-ladder-shaped polycrystalline diamond compact cutter, which has ridge-shaped cutting faces and multiple cutting edges with stepped distribution, in the hope of reducing vibration and improving drilling speed. Then, the scrape tests of ridge-ladder-shaped and general polycrystalline diamond compact cutters are carried out in a laboratory, indicating that the cutting, lateral, and longitudinal forces on ridge-ladder-shaped polycrystalline diamond compact cutters are smaller and with minor fluctuations. Due to different rock-breaking mechanisms, ridge-ladder-shaped polycrystalline diamond compact cutters have higher cutting efficiency compared to general polycrystalline diamond compact cutters, which is also verified experimentally. Finally, the drilling characteristics of a new polycrystalline diamond compact bit fitted with some ridge-ladder-shaped polycrystalline diamond compact cutters are compared to those of a general polycrystalline diamond compact bit by means of finite element simulation. The results show that introducing ridge-ladder-shaped polycrystalline diamond compact cutters can not only reduce the stick-slip vibration, bit bounce, and backward rotation of drill bits effectively, but also improve their rate of penetration.



中文翻译:

采用创新的脊梯形聚晶金刚石复合片刀具,减少振动,提高钻进速度。

多晶金刚石复合片钻头已广泛应用于石油和天然气钻井行业,尽管它们可能会在钻井过程中引入不良振动,例如粘滑和钻头跳动,从而加速故障率并导致更高的钻进量成本。首先,我们开发了一种创新的脊梯形聚晶金刚石复合片刀具,该刀具具有脊形切削面和阶梯分布的多个切削刃,以期减少振动并提高钻削速度。然后在实验室对脊梯形聚晶金刚石复合体刀具和普通聚晶金刚石复合体刀具进行了刮擦试验,结果表明,脊梯形聚晶金刚石复合体刀具的切削力、横向力和纵向力较小,且波动较小。 。由于破岩机理不同,脊梯形聚晶金刚石复合体刀具相比一般聚晶金刚石复合体刀具具有更高的切削效率,这也得到了实验的验证。最后,通过有限元模拟,对装配脊梯形聚晶金刚石复合片刀具的新型聚晶金刚石复合片钻头与普通聚晶金刚石复合片钻头的钻孔特性进行了比较。结果表明,引入脊梯形聚晶金刚石复合片刀具不仅可以有效减少钻头的粘滑振动、钻头跳动和后转现象,而且可以提高钻速。

更新日期:2020-06-26
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