moderately

岩屑描述规范（试行）

RAFTING OF PERCENTAGE SAMPLE DESCRIPTIONS D

sample Each cuttings should be described parately by the mudlogger and

retained in the wellsite file. The description should include percentage

lithologies.

The individual sample description are extremely important since they form the

ultimate point of reference for the lithology en as the well is drilled. Lithologies

should be described clearly and fully, with minimum u of such terms as “ as

above”.

ll the sample description disk should be forwarded to

lation of the final composite well log.

On completion of the we

ompany for u in compic

Page 1

NE DESCRIPTION SEQUENCE (砂岩的描述顺序)：

解释：

1.岩石

arent to translucent（透明‐半透明）, light grey（浅灰色）等等。

)：

DESCRIBING LITHOLOGY

Each geologist tends to describe the various characteristics of a sample or core in

an individual manner. However, to ensure uniformity in reports, core

escriptions, and especially on final composite logs, guidelines for a sample

escription layout are as follows:

d

d

Ⅰ SANDSTO

Sandstone