8/11/2019 Well Test Exam

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SUEZ CANAL UNIVERSITY Course: Well Testing

Faculty of et! " #in! Engineering Ti$e allo%e&: ' (rs

Final Ter$ E)a$ination *EE+ ,ate: -././0-0

Full #ar1: 20 3oints

Ans%er All T(e Follo%ing 4uestions

1-A: What are the main objectives of well test ..... (2Points)1-B: Write short notice about the various t!es of well tests..... (2Points)

1-":"alculate the a##itional !ressure #ro! #ue s$in for well !ro#ucin% at 2&'''

B*+. ,il formation volume factor is 1.' B*B& viscosit is 1/ c!&

!ermeabilit is 0&'' m#& net !a thic$ness is 10 ft& an# s$in factor is 11. fthe avera%e reservoir !ressure is 1&3'' !si an# the flowin% bottomhole

!ressure is 1&4'' !si. "alculate flow efficienc...(Points)

2-A: +efine each of the followin%: $in factor& 5ffective wellbore ra#ius & 6low

5fficienc an# Wellbore stora%e.(2Points)2-B: What #o ou $now about the most common t!es of reservoir boun#ar7 (2Points)

2-":"alculate the wellbore volume an# WB coefficient for a wellbore fille# with

a sin%le !hase li8ui#. he well is 2&4'' ft #ee! an# has 40*3-in.& 2-lb*ft

casin% (0./21-in. +)& the bottomhole !ressure is 1&4/' !si. f the well is

fille# with water (cw9 1'-4!si-1)& what is the wellbore stora%e coefficient7

..... (Points)

;-A:+ifferentiate between the i#eal an# actual buil#u! test..... (;Points)

;-B: +efine with $etch the #ifferent flow re%imes on the buil#u! for close#

circular reservoir with no flow outer boun#ar.. (2Points)

;-":A well !ro#ucin% from a close# s8uare reservoir. We want to evaluate that

well& so we !ro#uce it at constant rate of 12; B*+ for 1&''' hours an# thenshut-in. s !lot& #etermine the reservoir !ermeabilit& P1hran#

the avera%e reservoir !ressure. .... (Points)

Please see net !a%e

pi9 &11 !siaq9 12; stb*#

Bo9 1.12 b*tb

9 ;.1 c!

9 '.14

ct9 12 1'-4!si-1

h9 130 ftrw9 '.2 ft

Sw9 '.22

hut-in time& hours hut-in !ressure& !sia

; ;01

4 ;4;'

10 ;13

; ;3';

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8/11/2019 Well Test Exam

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