1- A well located in a 100 ft. thick reservoir having a pemeability of l100 mD produces 100 bbl/day of oil from a 10 in. diameter wellbore. The viscosity of the oil is 0.4 cP. The pressure at a distance of 1000 ft. from the wellbore is 3000 psi. What is the pressure at the wellbore?

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