IADC

基本解釋

In order to grade the used bits, IADC published the Three Point Dull Bit Grading Scheme.
爲(wèi)了對已使用的鑽頭進(jìn)行磨損定級,IADC制定了T-B-G鑽頭磨損三位定級方法。
Because it cannot fully evaluate the dull bit characteristics, IADC published the Eight Point Dull Bit Grading Scheme to replace the old scheme.
由於其不能全麪反映鑽頭的磨損情況,後來又制定了鑽頭磨損八位定級方法。
The examples said the formula is closer to reality than that given by API and IADC,and said also the casing bend testing need do further.
算例表明，該公式比API和IADC推薦的公式更接近實(shí)際，也表明此問題還需做進(jìn)一步的試騐研究。
IADC International association drilling contractor
國際鑽井承包商
IADC; International Association of Dento-Maxillo-Facial Radiology;
國際牙齒、上頜與麪部放射學(xué)協(xié)會(huì);