因为PDC刀具的剪切作用更有效率比一按钮或齿钻头的破碎作用，固定切割刀有很高的需求。

1982年，PDC钻头仅占2％，总进尺的钻探。 2010年，65％的总进尺的钻探用的PDCs。

跳转到：PDC刀具常见的尺寸。

相关网页：定向钻
相关网页：固定刀头IADC分类
相关网页：平淡分级一个固定刀位

应用

金刚石钻头被用于几乎所有的应用，包括热能源钻探，开采，水井和天然气钻探和油井钻探。 总的深度为100〜20000'。

PDC钻头被广泛用于theBarnett页岩天然气钻探。

限制

冲击损伤，热损伤和磨损所有抑制钻头的性能和可发生在甚至最柔软的地质构造。 然而，最困难的地层中PDC钻头钻极其磨料的。

随着上升PDC普及，有点制造企业都在寻求新的材料和设计方面做出更强硬一点不影响机械钻速。

如何PDC铣刀MADE

PDC刀具正在使用高温和高压的组合制成。 人造钻石可以生长在5-10分钟。 由于这种金刚石含量的，固定切削刀头也可以被称为一个金刚石钻头。

在冷却过程中，碳化钨收缩以2.5倍，比钻石更快的速率。 控制这种压力，因为与PDC刀具设计的许多方面，被称为知识产权，以及生产厂家很少，如果有的话，分享他们的秘密。

大VS. 小刀具

较小的切刀（8毫米，10mm时，13毫米至16mm）已经显示出在钻ROP比较大的切刀在某些应用中高。 一个这样的应用是石灰石。

此外，位设计采用较小的刀具具有更高的切割机密度; 从而，使他们能够承受更高的冲击载荷。

此外，小刀具生产规模较小的岩屑虽然大刀具产生较大的岩屑。 大岩屑可能导致问题与清孔，如果钻井液不能携带岩屑了环。

普通金刚石钻头PDC钻头尺码

采矿/地热/浅层石油和天然气

油田钻井钻头

Because the shearing action of PDC cutters are more efficient than the crushing action of a button or tooth bit, fixed cutters are in high demand.

In 1982, PDC drill bits accounted for only 2% of total footage drilled. In 2010, 65% of total footage drilled was by PDCs.

Skip to: Common sizes of PDC cutters.

Related page: Directional Drilling
Related page: IADC Classification of Fixed Cutter Bits
Related page: Dull Grading a Fixed Cutter Bit

APPLICATIONS

The diamond drill bit is used in nearly all applications including geothermal energy drilling, mining, water well and natural gas drilling and oil well drilling. Total depths range from 100 to 20000'.

PDC drill bits are used extensively in theBarnett Shale for natural gas drilling.

LIMITATIONS

Impact damage, heat damage and abrasive wear all inhibit a drill bit's performance and can occur in even the softest geological formations. However, the most difficult formation for a PDC bit to drill are extremely abrasive ones.

With PDC popularity on the rise, bit manufacturing companies are seeking new materials and design aspects to make a tougher bit without compromising ROP.

HOW PDC CUTTERS ARE MADE

PDC cutters are made using a combination of high heat and high pressure. Man made diamonds can be grown in 5-10 minutes. Because of this diamond content, a fixed cutter bit may also be known as a diamond drill bit.

During the cooling process, the tungsten carbide shrinks at a rate of 2.5 times faster than the diamond. Controlling this stress, as with most aspects of PDC cutter design, is called Intellectual Property, and manufacturers rarely, if ever, share their secrets.

LARGE VS. SMALL CUTTERS

Smaller cutters (8mm, 10mm, 13mm and 16mm) have been shown to drill at higher ROP than large cutters in certain applications. One such application is limestone.

Also, bit design employing smaller cutters have a higher cutter density; thus, enabling them to withstand higher impact loading.

Additionally, small cutters produce smaller cuttings while large cutters produce larger cuttings. Large cuttings may cause problems with hole cleaning if the drilling fluid cannot carry the cuttings up the annulus.

COMMON DIAMOND DRILL BIT PDC CUTTER SIZES

Mining/ Geothermal/ Shallow Oil and Gas

Oilfield Drilling Bits