A 100% carbonate reservoir at a depth of 10,900 ft is discovered on UTRGV campus. The log indicates an oil-bearing zone

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A 100 Carbonate Reservoir At A Depth Of 10 900 Ft Is Discovered On Utrgv Campus The Log Indicates An Oil Bearing Zone 1 (295.6 KiB) Viewed 47 times

A 100 Carbonate Reservoir At A Depth Of 10 900 Ft Is Discovered On Utrgv Campus The Log Indicates An Oil Bearing Zone 2 (146.71 KiB) Viewed 47 times

A 100 Carbonate Reservoir At A Depth Of 10 900 Ft Is Discovered On Utrgv Campus The Log Indicates An Oil Bearing Zone 3 (198.91 KiB) Viewed 47 times

A 100% carbonate reservoir at a depth of 10,900 ft is discovered on UTRGV campus. The log indicates an oil-bearing zone as shown below in the logs (it is oil and water with no gas). The logs assume 100% water in a carbonate reservoir formation. The reservoir height is 50 ft with reservoir drainage radius of 460 ft and reservoir pressure of 4000 psia. The water saturation is 0.25. The wellbore has a radius of 0.328 ft with wellbore flowing pressure of 1200 psia. A core sample (2 inch length by 1.5 inch diameter) was taken from the formation and tests performed on it to determine properties of the formation. The dry core was placed in a sample chamber of 150 cm³, which was connected to the reference chamber of 50 cm³ volume. Initially, when the valve connecting the two chambers was closed, the pressure reading on the reference chamber was 60 psig. When the valve was opened, the pressure reading dropped to 10 psig. The dry sample was flown through with oil with the data shown in the table below with all the experiments conducted at standard condition of 65 °F. The oil in the reservoir which was used also in the experiments has a density of 46 lb/ft³ and viscosity of 0.80 cp. Finally, the sample was dried and crushed. The crushed sample was placed in a beaker of the oil, resulting in 40 cm³ of oil being displaced from the beaker.
10700 10800 10900 0 Inlet Pressure. (psia) 200 300 400 6 GRC 150 0.2 SPC -160 MV 40 0.2 ACAL 16 0.2 + Outlet Pressure (psia) 150 225 300 ILDC SNC MLLCF 200 200 200 Flow rate (cm3/min) 10 15 20 RHOC 1.95 2.95 CNLLC 0.45 -0.15 DT 150 us/f 50 45 SPHI SS -15 mary
Determine: a. Effective porosity of the formation (5 points). b. Total porosity of the formation (5 points). c. Oil production rate from the reservoir in bbl/d (8 points) d. Oil production rate from the reservoir in bbl/d given that there is a zone near the wellbore (from wellbore to 20 ft into the reservoir) that has a permeability of 1 md, in addition to two channels that run parallel to the flow from wellbore to 100 ft into the reservoir with the diameter of each channel being 0.2 ft [you can view the reservoir has a box with length being two times the drainage radius and the width being also two times the drainage radius] (8 points). e. Reservoir total pore volume after the reservoir pressure is reduced to 1,500 psia with pore volume compressibility of the reservoir rock being 3.8 x 10-6 psi-1 (4 points).