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INSTITUTE OF PETROLEUM AND NATURAL GAS ENGINEERING

MEHRAN UNIVERSITY OF ENGINEERING AND TECHNOLOGY JAMSHORO.

WELL TESTING

Regular Examination 2010 First term Final Year (7th Term)

Time allowed: 30 minutes Max. Marks. 15

DATE:ROLL NO.

MARK TRUE OF FALSE

01 Both Pressures build up testing and Pressure draw down testing have same objectives.

02 The diffusivity constant is the group of terms determines the rate at which fluid will not

readjust in response to a pressure distribution imposed on the system.

03 In middle time region, pressure moves away from the well bore into the bulk formation.

04 RTTS and Champ Packer are use in DST.

05 The MTR is dominated by well bore unloading exceeds the rate at which fluid enters the

well bore, until equilibrium is established.

FILL IN THE BLANKS

01 The diffusivity equation is the relationship between --------, --------- and time.

02 In a pressure draw down test, rate and pressure are recorded as functions of ---------.

03 ------------------ have the additional advantage of providing model solutions that are

independent of any particular unit system.

04 Formation permeability k can be determined from a build up test by measuring the -------

05 In actual build up test, instead of a straight line, a curve with a complicated shape that

can be divided in to --------------region.

06 Diffusivity equation relationship indicates that the pressure at any radius in the radial

flow system is a function of ---------------------------

07 Interference test is used to evaluate reservoir porosity and -----------------------

08 In the isochronal data the best straight line is drawn called------------- deliverability line.

09 Drill stem testing is gives the information of --------------------------, flow rate and BHP.

10 ----------------- determines whether the well pairs are in pressure communication or not.

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CHOOSE THE CORRECT ANSWER

01 One major purpose of well testing is to determine the ability of a formation to producereservoir ----------.

(a) Compressibility (b) permeability (c) fluid

02 Drill stem testing can also be used to catch the(a) The bit (b) Drill collar (c) Fluid sample

03 Reservoir of low permeability is certainly is the candidate of(a) Drill stem testing (b) Draw down test (c) Isochronal testing

04 In a pressure draw down test, rate and pressure are recorded as functions of(a) Time lag (b) dimensionless time (c) time

05 Pulses are alternating periods of (a) Production (b) Shut in (c) Production and Shut in

IDENTIFY THE FOLLOWING NOTATION AND OBRIVIATION

1 C 2. Pint

3. tpss 4. CA

5. P D

DEFINE THE FOLLOWING TERMS

1. Interference test

2. Well bore storage effects

3. Objectives of well testing

4. Flow after flow test

5. Down hole completion of MDT

The End