API- Ace Petroleum Engineering

Which of the following well test method can be used to know the communication between two wells? A)Falloff test B)DST C)Interference test D)Step rate

If the 2 faults were parallel, what would the log-log and derivative plots do? A) linear flow ; 1/2 slope B)bilinear flow ; 1/4 slope C)spherical flow ; -1/2 slope D) none of these

Transmissibility of a formation is given by __ Where: K = Permeability of formation, h= formation thickness, U: fluid viscosity & p: fluid density. A)Khp B)Kh/p C)Kh/U D)K/U

Which of the following condition signifies that the well is damaged? Where, FE = Flow efficiency A)FE more than one B)FE less than one C)FE equal to one D)None

Pseudo-steady state (PSS) flow occurs during the _ __time region when the outer boundaries of the reservoir are all no flow boundaries. A) early B) late C) middle D) none

Oil rate is 200 STB/day. The producing GOR is 800 SCF/STB and dissolved GOR is 200 SCF/STB_ .Bg=.01ft3/SCF and the formation volume factor of oil is 1.2 reservoir-bbl/STB. The down-hole GOR is. ____ ft3/ reservoir bbI. A)5 B)8.33 C)8 D)10

A reservoir limit test is a __________ a) Drawdown test b) Build up test c) Injectivity test d) None of the above

The generalized solutions to Diffusivity equation is a) The constant-terminal-pressure solution b) The constant-terminal-rate solution c) Both (a) and (b) d) None of the above

Compton scattering takes place if the energy of gamma rays lies in the range of A)10 Kev to 50 Kev B) 50 Kev to 100 Kev c) 100 Kev to 2.0 MeV D) 2.0 MeV to 3.5 MeV

In which of the following distribution of clay particle in porous reservoir formation will have highest porosity and water content? A)Laminated B)Dispersed C)Structural D) None

In resistivity logging using a 'Normal device', the distance between electrodes A and M is 0.40 m. If 20 mA current generates 10 mV potential, the apparent resistivity of the layer between the electrodes is ______ohm m. A)2.152 B)2.512 C)2.521 D)25.2

A gaseous hydrocarbon-bearing zone can be best identified by a combined analysis of A)Natural gamma ray (GR) and Neutron logs B)Sonic and Neutron logs C)Density and Neutron logs D)Density and Self potential(SP) logs

___________ uses a scintillation counter to measure the natural radioactivity of formations. a) Gamma ray log b) Caliper log c) Both (a) and (b) d) None of the above

Laterolog is used in________ a) high-resistivity salty muds b) low-resistivity salty muds c) medium-resistivity salty muds d) None of the above

___________ is the ratio of petroleum actually formed to the genetic potential. a) Transformation ratio b) Formation volume factor c) Productivity index d) None of the above

Which log can be used to identify fractures near the wellbore? a) Microresistivity log b) Induction log c) Sonic log d) None of the above

The density log is a porosity log that measures the ________of a formation a) electron density b) neutron density c) proton density d) None of the above

In gas bearing formation the response of porosity by neutron log and density log will be a) ΦN<ΦD b) ΦN>ΦD c) ΦN>ΦD d) None of the above

If the color of fluorescence is brown, the API Gravity of oil will be a) Less than 15 b) Between 25 – 35 c) Between 35 – 45 d) Over 45