SPE Well Completions and Stimulation 2

Question 1

What is the primary purpose of a packer in a well completion?

Accepted Answer

To isolate zones and seal the annulus between tubing and casing

Answer

Packers isolate production zones and seal the annulus to direct fluids through the tubing string.

Question 2

In a gravel pack completion, what is the primary function of the gravel?

Accepted Answer

To filter formation sand while maintaining fluid flow

Answer

Gravel packs filter formation sand particles, preventing them from migrating into the wellbore while allowing hydrocarbons to flow.

Question 3

Which type of perforation gun system is conveyed on electric wireline?

Accepted Answer

Wireline-conveyed perforating

Answer

Wireline-conveyed perforating guns are run on electric wireline and fired electrically from surface.

Question 4

What does the term 'skin factor' represent in well completions?

Accepted Answer

A dimensionless measure of near-wellbore flow restriction or enhancement

Answer

Skin factor is a dimensionless number quantifying additional pressure drop (positive skin = damage, negative skin = stimulation).

Question 5

What is the main advantage of an openhole completion over a cased-hole completion?

Accepted Answer

Lower cost and no perforation damage

Answer

Openhole completions avoid the cost of cementing and perforating, and eliminate perforation-induced damage near the wellbore.

(SPE) Society of Petroleum Engineers Certification Practice Test