CPG Quality Control & Process Improvement 2

Question 1

Which statistical tool is used to identify the most significant causes of defects by ranking them in descending order of frequency?

Accepted Answer

Pareto chart

Answer

A Pareto chart ranks defect causes by frequency so teams can focus on the vital few issues that cause most problems.

Question 2

In petroleum seismic data processing, what QC step helps detect systematic errors introduced by a faulty geophone group?

Accepted Answer

Shot gather QC

Answer

Shot gather QC allows identification of dead, noisy, or consistently anomalous traces linked to malfunctioning receiver groups.

Question 3

What is the purpose of a repeatability test in a quality control program for geochemical sampling?

Accepted Answer

To verify that duplicate samples collected at the same location give consistent results

Answer

Repeatability tests check that field duplicates from the same location produce consistent analytical results, confirming sampling precision.

Question 4

Six Sigma process improvement defines a defect opportunity as:

Accepted Answer

Any measurable characteristic of a product that can fail to meet customer specifications

Answer

A defect opportunity is any measurable characteristic that could fail to meet the defined specification or customer requirement.

Question 5

A drilling team notices ROP dropping progressively over multiple bit runs at the same depth interval. Which QC/process improvement step best addresses this trend?

Accepted Answer

Conduct root cause analysis on bit selection and drilling parameters

Answer

Root cause analysis examines bit selection, WOB, RPM, and formation hardness to identify and eliminate the underlying cause of ROP decline.

(CPG) Certified Petroleum Geologist Practice Test

(CPG) Certified Petroleum Geologist Practice Test

CPG Quality Control & Process Improvement 2