Petroleum Engineering Test 1 Nddc Scholarship

Correct Answer: C. More of Methane

Hydrates are crystalline solids formed from water and gas molecules, primarily methane. These methane hydrates can form under high-pressure and low-temperature conditions, especially in subsea pipelines and deepwater environments.

Correct Answer: D. 60 psi

Gas cut mud reduces the effective density of the drilling fluid, leading to a drop in bottom hole pressure. A typical and significant reduction due to gas cutting is around 60 psi, which can compromise well control if not managed properly.

Correct Answer: D. Shut the well & investigate the problem of pressure loss

A sudden loss in drill pipe pressure during a killing operation is abnormal and could indicate a serious issue such as a leak, formation breakdown, or equipment failure. The safest response is to shut in the well and investigate the cause of the pressure loss before proceeding, to avoid potential blowouts or well control issues.

Correct Answer: B. All of the above

The transformation of dead aquatic organisms into petroleum occurred over millions of years due to a combination of high pressure, high temperature, and absence of air (anaerobic conditions). These conditions promoted the chemical changes needed to form hydrocarbons.

Correct Answer: B) 1968

The Organization of Arab Petroleum Exporting Countries (OAPEC) was formed in 1968 by Kuwait, Libya, and Saudi Arabia to coordinate and promote cooperation among Arab oil-exporting nations.

Correct Answer: B. Class J
According to API (American Petroleum Institute) classification, Class J cement is designed for deep wells typically ranging from 10,000 to 14,000 feet, where high temperatures and pressures are encountered. It offers the strength and durability needed for such challenging conditions.

Correct Answer: A. Partial Completion

Partial completion is a method where only selected intervals of a reservoir are perforated or completed. This is done to avoid unwanted fluids such as water or gas from other zones and to target the most productive parts of the formation.

Correct Answer: (d). Nitrogen Gas Injection (NGI)

Nitrogen Gas Injection (NGI) is a type of gas injection EOR, not chemical injection. It involves injecting nitrogen gas to maintain reservoir pressure and improve oil displacement, unlike polymer flooding, microbial injection, and WAG, which are more closely related to chemical or chemically-assisted methods.

Correct Answer: A) 1971

Nigeria joined the Organization of the Petroleum Exporting Countries (OPEC) in 1971, becoming the 11th member of the organization.

Correct Answer: D. all (a), (b) and (c)

Petroleum deposits are located using a combination of methods including:

• Surface indicators like oil seepage,

• Geophysical methods involving measurements of density, elasticity, magnetic and electric properties,

• Geological studies that consider the age and type of rocks.