Question

A liquid sample from a black oil reservoir had a volume of 227.0 cc in a laboratory cell at reservoir temperature and bubble-point pressure. The liquid was expelled through laboratory equipment which is the equivalent of the field separator-stock tank system. The oil volume collected in the stock tank was 167.4 cc. The separator produced 0.537 scf of gas, and the stock tank produced 0.059 scf of gas. Calculate the formation volume factor of the oil and the solution gas-oil ratio.

Answer 1

Answer:

Formation volume factor  = 1.36

The solution gas-oil ratio = 0.00356

Explanation:

Given Data;

Volume of oil reservoir = 227.0 cc

Volume of oil in the tank = 167.4 cc

Separator production = 0.537 scf

Stock tank production = 0.059 scf

formation volume factor of the oil =?

The solution gas-oil ratio = ?

1. Formation volume factor is calculated using the formula;

Formation volume factor = volume of oil reservoir/volume of oil stock tank

Substituting, we have

Formation volume factor = 227.0/ 167.4

                                          = 1.36

2. The solution gas-oil ratio can be calculated using the formula;

The solution gas-oil ratio= total gas in scf/volume of stock tank

                                         = (0.537 + 0.059)/167.4

                                         = 0.596/167.4

                                        =0.00356