Muestra de Un Homework Sobre PTA en TAMU

7/27/2019 Muestra de Un Homework Sobre PTA en TAMU

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DO NOT Submit this Orientation Sheet with your assignment

Petroleum Engineering 663 Summer 2012

Formation Evaluation and Analysis of Reservoir Performance

Analysis of Reservoir Performance [Blasingame]Orientation to Assignment Set

Commands:

You must submit a SINGLE .pdf file on 07 August 2012 to:

[email protected] (the course instructor)

[email protected] (the Distance Learning staff)

The name of the file MUST be: P663_12B_Assgn_YOURLASTNAME.pdf

You must only work on the given assignment sheets.

You must only write on the front of any page (obvious, but has to be mentioned).

The assignment must be submitted EXACTLY AS RECEIVED (same number of pages). Write your name in the "Name: ______________" space (EVERYpage!).

Suggestions:

Print the assignment on a color printer (immediately).

Read the assignment in its entirety:

Print and sign your name as required on the coversheet.

Write your name in the "Name: ______________" space.

Read the assignment again, carefully reviewing what is asked and what is given.

Read the references provided BEFORE starting work on the assignment.

Last Words:

Follow instructions (please!).

ALL work must be performed by HAND (this is stated repeatedly).

ALL work must be performed on the assignment sheets (this is stated repeatedly).

No computer-aided/assisted work/solutions/etc. of any kind are permitted.

No collaborations of any kind are permitted.


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Notes:

You MUST submit ALL assignments in a SINGLE .pdf file P663_12B_Assgn_YOURLASTNAME.pdfYou MUST perform all work BY HAND, on the sheets provided in this handout. (no computer analyses allowed)You MUST ensure that all pages are correctly ordered and scanned legibly. (poorly constructed/assembled work will not be graded)

Treat this assignment as an EXAMINATION, no collaboration is allowed, submit only your best work!

(Page 1 of29)

Name: ______________________________Assigned: Saturday 28 July 2012

Due: Tuesday 07 August 2012 by Midnight (23:59:59 US CDT)

Send a SINGLE.pdf file (no .doc, .xls, .??? no exceptions) to: [email protected], [email protected]

Petroleum Engineering 663 Formation Evaluation and Analysis of Reservoir PerformanceAssignment Set Analysis of Reservoir Performance [Blasingame]

Assigned: Saturday 28 July 2012 Due: Tuesday 07 August 2012 [by Midnight (23:59:59 US CDT)]

Assignment Coversheet(This sheet must be included with your work submission)

Required Academic Integrity Statement: (Texas A&M University Policy Statement)

Academic Integrity Statement

All syllabi shall contain a section that states the Aggie Honor Code and refers the student to the Honor Council Rules andProcedures on the web.

Aggie Honor Code"An Aggie does not lie, cheat, or steal or tolerate those who do."

Upon accepting admission to Texas A&M University, a student immediately assumes a commitment to uphold the HonorCode, to accept responsibility for learning and to follow the philosophy and rules of the Honor System. Students will berequired to state their commitment on examinations, research papers, and other academic work. Ignorance of the rules doesnot exclude any member of the Texas A&M University community from the requirements or the processes of the Honor

System. For additional information please visit: www.tamu.edu/aggiehonor/On all course work, assignments, and examinations at Texas A&M University, the following Honor Pledge shall bepreprinted and signed by the student:

"On my honor, as an Aggie,I have neither given nor received unauthorized aid on this academic work."

Aggie Code of Honor:

An Aggie does not lie, cheat, or steal or tolerate those who do.

Required Academic Integrity Statement:

"On my honor, as an Aggie, I have neither given nor receivedunauthorized aid on this academic work."

_______________________________ (Print your name)

_______________________________ (Your signature)

Coursework Copyright Statement: (Texas A&M University Policy Statement)

The handouts used in this course are copyrighted. By "handouts," this means all materials generated for this class,which include but are not limited to syllabi, quizzes, exams, lab problems, in-class materials, review sheets, andadditional problem sets. Because these materials are copyrighted, you do not have the right to copy them, unless youare expressly granted permission.

As commonly defined, plagiarism consists of passing off as ones own the ideas, words, writings, etc., that belong to

another. In accordance with this definition, you are committing plagiarism if you copy the work of another personand turn it in as your own, even if you should have the permission of that person. Plagiarism is one of the worstacademic sins, for the plagiarist destroys the trust among colleagues without which research cannot be safelycommunicated.

If you have any questions about plagiarism and/or copying, please consult the latest issue of the Texas A&MUniversity Student Rules, under the section "Scholastic Dishonesty."


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Instructions:

You must follow the following instructions for the submission of your assignments for this portion of the course:

You must submit a SINGLE .pdf file: BOTH assignments must be in the same .pdf file. The name of the file MUST be:P663_12B_Assgn_YOURLASTNAME.pdf (name in ALL CAPS).

You must include all assignment sheets, including the SIGNED coversheet (i.e., the honor statement).

You must submit to "[email protected]" (this address accepts attachments up to (approximately) 50 MB): All submissions will be confirmed with a personal receipt reply (instructor acknowledgement). Please submit the smallest practical-sized file to avoid issues with receiving and downloading.

Your scanned submission MUST BE LEGIBLE: You should check a sample of your submission, if it cannot be read, it will not be graded.

If your submission is received late (i.e., after 23:59:59 US CDT on Tuesday 07 August 2012), then your submissionwill likely be graded after the grade submission deadline , you will receive an "I" or "incomplete" grade in this case.Your grade will be resolved once your submission is received and graded.

Work Requirements: (layout/format/etc.)You must prepare your work as instructed below, or you will be assessed SEVERE grading penalties.

You must only work on the assignment sheets:NO insert or extra pages allowed, the assignment must be submitted EXACTLY AS RECEIVED. You must write on the assignment by hand, no computer-based work will be permitted. You must properly reassemble your assignment. You must only write on the FRONT of any page.

You must showALL work in particular, YOU MUST: Write your name in the "Name: ______________" space given on the upper right corner ofEVERYpage. Show all details in your calculations (no skipped steps). Show all units in each calculation.

Work layout:

NEATNESS: You will be graded on the neatness of your work. LABELS: All plots, trends, features MUST be appropriately labeled no exceptions. LINES: Use appropriate drafting care in construction of lines, trends, arrows, etc. SKETCHING: Take great care in any sketches you create/use in your work.

Scholastic Dishonesty:

THE STUDENT IS HEREBY WARNED THAT ANY/ALL ACTS OF SCHOLASTIC DISHONESTY WILL RESULT IN AN

"F" GRADE FOR ALL ASSIGNMENTS IN THIS PORTION OF THE COURSE. As a definition, "scholastic dishonesty"will include any or all of the following acts:

Unauthorized collaborations you are explicitly forbidden from working together.

Using work of others you are explicitly forbidden from using the work of others "others" is defined as studentsin this course, as well as any other person. You are required to perform your own work.

Using software you are explicitly forbidden from using commercial and/or non-commercial software packages forwell test and production data analysis.No computer-based solutions are permitted, only "hand work."

This is a zero-tolerance policy, there will be no exceptions.

Work Standard:

Simply put, the expectation of the instructor(Blasingame) is that "perfection is the standard" in other words, your workwill be judged against a perfect standard. If your submission is not your very best work, then don't submit it. You have an

OBLIGATION to submit only your very best work.


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Problem 1: Analysis of Water Well Test Data (2003) (Texas A&M University)

Orientation: This problem consists of a pressure drawdown/buildup test sequence performed on a pumping WATER well

(our campus water well). There are no "tricks" involved this should be a straightforward analysis/interpretation sequence.Be sure to perform all analyses and cross-check/double-check your work whenever possible.

Given: These attached data were taken from a pressure drawdown/buildup test sequence performed on our campus waterwell. The reservoir interval is a water sand at about 450 ft the well is not stimulated and should not be damaged however, the well is completed "open hole," so some evidence of stimulation is possible. The reservoir should be assumed to

be homogeneous and infinite-acting.

Reservoir properties:

I=0.25 rw=0.36 ft ct=6.5x10-6 psia-1 h=23 ft

Water properties:

Bw=1.0 RB/STB Pw=1.0 cp

Production parameters:

Event

Durationof Event

(hr)

Pressure at startof Event

(psia)

WaterFlowrate(STB/D)

1. Drawdown Test 2.054 pi=147.29 60

2. Buildup Test 2.25 pwf('t=0)=139.3 0

Summary Plot: (Drawdown/Buildup Test Sequences)


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(Page 4 of29)







Governing Equations: Drawdown

Early-Time Cartesian Analysis: Wellbore Storage Domination RegimeThe governing relation for the wellbore storage domination regime is:

swbswbsiwf C

qBmtmpp

24where, Cs, is given by: .

24 wbss

m

qBC

Semilog Analysis: Infinite-Acting Radial Flow Regime (IARF)

The governing relation for the infinite-acting radial flow regime (IARF) is:

.8686.02275.32

logand6.162where,)log( 11

prs

wrtc

kmpp

kh

qBmtmpp slihrslslhrwf

IP

P

The formation permeability, k, is given as:

hm

qB

ksl

P

6.162

The pseudoradial skin factor, spr, is given by:

hr)]1([2275.32

loghr)]1([

1513.1 1

tpp

wrtc

k

slm

twfpip

prs wfhrIP

"Preliminary" Log-log Analysis:

The governing relation for the wellbore storage domination regime (unit slope line):

swbswbs

C

qBmtm

dt

pdtp'

24where,

''


slmkh

qB

dt

pdtp' 303.216.70 '' P

Type Curve Analysis Relations: "Advanced" Log-Log Analysis

"Bourdet -Gringarten" Type Curves: (Unfractured Vertical Well with Wellbore Storage and Skin Effects)

Family Parameter:

CDe2s

Formation Permeability:

]or[

]or[2.141

MP'

MP'wDwD

pp

pp

h

qBk

''

P

Dimensionless Wellbore Storage Coefficient:

]/[

][0002637.0

2MPDD

MP

wt

DCt

t

rc

kC

IP

Pseudoradial Flow Skin Factor:

][ln

2

1

2

D

MPs

Dpr

C

eCs


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________________________________________________________________________________________________________________________________________________________________________

Notes:

You MUST submit ALL assignments in a SINGLE .pdf file P663_12B_Assgn_YOURLASTNAME.pdfYou MUST perform all work BY HAND, on the sheets provided in this handout. (no computer analyses allowed)You MUST ensure that all pages are correctly ordered and scanned legibly. (poorly constructed/assembled work will not be graded)Treat this assignment as an EXAMINATION, no collaboration is allowed, submit only your best work!

(Page 5 of29)







Governing Equations: Buildup

Early-Time Cartesian Analysis: Wellbore Storage Domination RegimeThe governing relation for the wellbore storage domination regime (unit slope line):

swbswbswfws

C

qBmtmtpp

24where,0)( '' Cs, is given by: .

24 wbss

m

qBC

Semilog Analysis: Infinite-Acting Radial Flow Regime (IARF)

Horner Time: (includes the rate history)


kh

qBm

t

ttmpp sl

psliws

P6.162where,log

'

' k, is given as:

hm

qBk

sl

P6.162


'' 2275.3

2log

1log

0)](hr)1([1513.1

wrtc

k

t

t

slm

twfptwsp

prsp

p

IP

MDH: (does NOT include the rate history)

The (approximate) governing relation for the infinite-acting radial flow regime (IARF) is:

.6.162where,8686.02275.32

log)log(0)(kh

qBmprs

wrticgi

kmtmtpp slslslwfws

P

IP

''


hm

qBk

sl

P6.162


'' 2275.3

2log

0)](hr)1([1513.1

wrtc

k

slm

twfptwsp

prsIP

Agarwal Effective Time: (includes the rate history)


'

''

''

tt

tttprs

wrtc

kmtpp

kh

qBmtmpp

p

peslwfhrsleslhrws

8686.02275.3

2log0)(and6.162;)log( 11

IP

P


hmqBk

sl

P6.162


hr)]1([2275.32

log1

log0)](hr)1([

1513.1 1 '

'' tpp

wrtc

k

t

t

slm

twfptwsp

prs wshrp

p

IP


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(Page 6 of29)







Governing Equations: Buildup (Continued)

"Preliminary" Log-log Analysis:The governing relation for the wellbore storage domination regime (unit slope line):

swbswbs

C

qBmtm

td

pdtp'

24where,

'

'''


slmkh

qB

td

pdtp'

303.2

16.70

'

'''

P

Type Curve Analysis Relations: "Advanced" Log-Log Analysis

"Bourdet -Gringarten" Type Curves: (Unfractured Vertical Well with Wellbore Storage and Skin Effects)

Family Parameter:

CD

e2s

Formation Permeability:

]or[

]or[2.141

MP'

MP'wDwD

pp

pp

h

qBk

''

P

Dimensionless Wellbore Storage Coefficient:

]/[

]or[0002637.0

2MPDD

MPe

wt

DCt

tt

rc

kC

''

IP

Pseudoradial Flow Skin Factor:

][ln

2

1

2

D

MPs

Dpr

C

eCs

Modified Muskat/Muskat-Arps Plot: (ONLYvalid for late-time boundary-dominated flow)

The governing relation for the late-time "Muskat" flow regime is given as:

> @tbatrc

k

kh

qBp-p

et

ws '

' exp00388.0exp6.118

2IP

P

Solving for the "Muskat-Arps" plotting function, we have:

.is0atinterceptted)(extrapolathewhere,1

ptd

dp

td

dp

b-pp wswsws

''


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(Page 7 of29)







Required: Pressure Drawdown Analysis of Water Well Test Data (Texas A&M University 2003)

You are to estimate the following:

Preliminary log-log analysis:a. The wellbore storage coefficient, Cs.b. The formation permeability, k.

Cartesian analysis of "early" time (wellbore storage distorted) data:a. The pressure at the start of the test,pi.b. The wellbore storage coefficient, Cs.

Semilog analysis of "middle" time (radial flow) data:a. The formation permeability, k.b. The near well skin factor, s.

Log-log type curve analysis:

a. The formation permeability, k.b. The dimensionless (pseudoradial flow) skin factor, spr.c. The wellbore storage coefficient, Cs.d. The dimensionless wellbore storage coefficient, CD.

Results: Pressure Drawdown Analysis of Water Well Test Data (Texas A&M University 2003)

Preliminary Log-Log Analysis:

Wellbore storage coefficient, Cs = RB/psi

Formation permeability, k = md

Cartesian Analysis: Early Time Data

Pressure at start of test,pi = psia


Dimensionless wellbore storage coefficient, CD =

Semilog Analysis:


Dimensionless (pseudoradial flow) skin factor, spr =

Log-Log Type Curve Analysis:


Dimensionless (pseudoradial flow) skin factor, spr =




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(Page 8 of29)







Required: Pressure Buildup Analysis of Water Well Test Data (Texas A&M University 2003)

You are to estimate the following:

Preliminary log-log analysis:a. The wellbore storage coefficient, Cs.b. The formation permeability, k.

Cartesian analysis of "early" time (wellbore storage distorted) data:

a. The pressure at the start of the test,pwf('t=0).b. The wellbore storage coefficient, Cs.

Semilog analysis of "middle" time (radial flow) data:a. The formation permeability, k.b. The near well skin factor, s.

Log-log type curve analysis: (use both 'tand'te methods)

a. The formation permeability, k.b. The dimensionless (pseudoradial flow) skin factor, spr.c. The wellbore storage coefficient, Cs.d. The dimensionless wellbore storage coefficient, CD.

Cartesian analysis of "late" time (boundary-dominated) data: "Muskat Plot"a. Average pressure, p .

Results: Pressure Buildup Analysis of Water Well Test Data (Texas A&M University 2003)

Preliminary Log-Log Analysis: ('te and't(MDH) analysis) 'te 't(MDH)

Wellbore storage coefficient, Cs = RB/psi = RB/psi

Formation permeability, k = md = md


Pressure at start of test,pwf('t=0) = psia



Semilog Analysis: (Horner and MDH analysis) Horner 'te 't(MDH)

Formation permeability, k = md = md = md

Dim-less (psd. rad, flow) skin factor, spr= = =

Log-Log Type Curve Analysis: 'te 't

Formation permeability, k = md = md

Dimensionless (pseudoradial flow) skin factor, spr = =

Wellbore storage coefficient, Cs = RB/psi = RB/psi

Dimensionless wellbore storage coefficient, CD = =

Cartesian Analysis: Late Time Data ("Muskat Plot")

Average pressure, p (if applicable) = psia


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(Page 9 of29)







Data Functions: Pressure Drawdown Case [Analysis of Water Well Test Data (2003) (Texas A&M University)]

Pointt

(hr)pwf

(psia)'p

(psi)'p'(psi)

1 0.0042 146.98 0.307 0.31172 0.0083 146.68 0.613 0.46853 0.0125 146.50 0.794 0.76774 0.0167 146.24 1.046 0.85605 0.0208 145.92 1.371 0.86096 0.0250 145.74 1.552 1.26447 0.0292 145.63 1.660 1.36698 0.0333 145.45 1.840 1.44449 0.0375 145.31 1.985 1.3695

10 0.0417 145.16 2.129 1.422811 0.0458 144.95 2.345 1.4908

12 0.0542 144.58 2.706 1.737413 0.0625 144.33 2.959 1.818914 0.0708 144.08 3.211 1.899215 0.0792 143.95 3.338 1.862216 0.0875 143.86 3.428 1.713217 0.0958 143.77 3.518 1.696818 0.1042 143.57 3.717 1.578519 0.1125 143.36 3.933 1.536020 0.1208 143.16 4.132 1.562621 0.1375 143.05 4.240 1.403322 0.1542 142.91 4.384 1.395423 0.1708 142.78 4.510 1.494424 0.1875 142.67 4.619 1.3573

25 0.2042 142.60 4.691 1.216226 0.2208 142.46 4.835 1.108027 0.2375 142.40 4.889 1.143128 0.2542 142.35 4.943 1.182629 0.2708 142.26 5.034 1.206030 0.2875 142.22 5.070 1.198931 0.3042 142.13 5.160 1.217232 0.3208 142.09 5.196 1.241533 0.3375 142.04 5.250 1.247334 0.3542 142.00 5.286 1.288435 0.3708 141.93 5.358 1.222536 0.3875 141.90 5.394 1.235837 0.4042 141.84 5.449 1.1947

38 0.4208 141.81 5.485 1.180839 0.4375 141.70 5.593 1.225640 0.4542 141.64 5.647 1.2847


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Data Functions: Pressure Drawdown Case [Analysis of Water Well Test Data (2003) (Texas A&M University)]

Pointt

(hr)pwf

(psia)'p

(psi)'p'(psi)

41 0.4708 141.61 5.683 1.291142 0.4875 141.54 5.755 1.289343 0.5042 141.50 5.791 1.350844 0.5208 141.45 5.845 1.398845 0.5375 141.39 5.900 1.411046 0.5542 141.34 5.954 1.388847 0.5708 141.28 6.008 1.431848 0.5875 141.25 6.044 1.432449 0.6042 141.19 6.098 1.453750 0.6208 141.16 6.134 1.451651 0.6375 141.08 6.206 1.490952 0.7208 141.03 6.260 1.501753 0.8042 140.90 6.387 1.460454 0.8875 140.72 6.567 1.439255 0.9708 140.51 6.784 1.474556 1.0542 140.40 6.892 1.460257 1.1375 140.29 7.000 1.455558 1.2208 140.15 7.144 1.547759 1.3042 140.07 7.217 1.731460 1.3875 139.98 7.307 1.725561 1.4708 139.91 7.379 1.764662 1.5542 139.86 7.433 1.711063 1.6375 139.79 7.505 1.635964 1.7208 139.71 7.577 1.6371

65 1.8042 139.62 7.668 1.515566 1.8875 139.55 7.740 1.542067 1.9708 139.51 7.776 1.499968 2.0542 139.46 7.830 1.4844


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Data Functions: Pressure Buildup Case [Analysis of Water Well Test Data (2003) (Texas A&M University)]

Point't

(hr)'te(hr)

HornerTime

pws(psia)

'p(psi)

'p'('t)(psi)

'p'('te)(psi)

1 0.00417 0.00416 494.00 139.55 0.2500 0.4465 0.44822 0.00833 0.00830 247.50 139.78 0.4847 0.4761 0.58633 0.01250 0.01242 165.33 140.04 0.7372 0.6496 0.75244 0.01667 0.01653 124.25 140.25 0.9537 0.8573 0.92805 0.02083 0.02062 99.60 140.47 1.1702 1.0077 1.11016 0.02500 0.02470 83.17 140.65 1.3507 1.1831 1.27737 0.02917 0.02876 71.43 140.87 1.5672 1.3363 1.38828 0.03333 0.03280 62.63 141.07 1.7656 1.4840 1.44669 0.03750 0.03683 55.78 141.23 1.9280 1.5453 1.5409

10 0.04167 0.04084 50.30 141.34 2.0363 1.5922 1.648811 0.04583 0.04483 45.82 141.57 2.2708 1.7493 1.6789

12 0.05000 0.04881 42.08 141.68 2.3790 1.8102 1.700613 0.05417 0.05278 38.92 141.88 2.5775 1.8593 1.837514 0.05833 0.05672 36.21 142.00 2.7038 1.8630 1.863615 0.06250 0.06065 33.87 142.17 2.8662 1.9784 1.895116 0.06667 0.06457 31.81 142.26 2.9564 1.9843 1.912117 0.07083 0.06847 30.00 142.35 3.0466 2.0171 1.946018 0.07500 0.07236 28.39 142.45 3.1548 2.0352 1.983219 0.07917 0.07623 26.95 142.56 3.2631 2.1403 2.022420 0.08333 0.08008 25.65 142.65 3.3533 2.0667 2.022021 0.09167 0.08775 23.41 142.89 3.5878 2.1739 2.077722 0.10000 0.09536 21.54 143.03 3.7322 2.1005 2.084923 0.10833 0.10291 19.96 143.14 3.8404 2.1185 2.099424 0.11667 0.11040 18.61 143.39 4.0930 2.1298 2.0805

25 0.12500 0.11783 17.43 143.52 4.2193 2.1778 2.074626 0.13333 0.12521 16.41 143.65 4.3456 2.2077 2.036027 0.14167 0.13253 15.50 143.75 4.4538 2.1873 2.058628 0.15000 0.13979 14.69 143.88 4.5801 2.2009 2.077629 0.15833 0.14700 13.97 144.01 4.7064 2.1845 2.055430 0.16667 0.15416 13.33 144.11 4.8147 2.1729 2.049631 0.17500 0.16126 12.74 144.19 4.8868 2.1184 2.045432 0.18333 0.16831 12.20 144.31 5.0131 2.1219 2.026333 0.20000 0.18226 11.27 144.44 5.1394 2.1012 1.958034 0.21667 0.19599 10.48 144.64 5.3379 2.1551 1.955335 0.23333 0.20953 9.80 144.73 5.4281 1.9794 1.945036 0.25000 0.22288 9.22 144.87 5.5724 1.9673 1.840637 0.26667 0.23603 8.70 144.96 5.6626 1.9282 1.8017

38 0.28333 0.24899 8.25 145.09 5.7889 1.8812 1.756739 0.30000 0.26177 7.85 145.14 5.8430 1.7986 1.733640 0.31667 0.27437 7.49 145.23 5.9332 1.7516 1.7112


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(Page 12 of29)







Data Functions: Pressure Buildup Case [Analysis of Water Well Test Data (2003) (Texas A&M University)]

Point't

(hr)'te(hr)

HornerTime

pws(psia)

'p(psi)

'p'('t)(psi)

'p'('te)(psi)

41 0.33333 0.28679 7.16 145.32 6.0235 1.7562 1.677242 0.41667 0.34640 5.93 145.63 6.3302 1.5923 1.489943 0.50000 0.40212 5.11 145.85 6.5467 1.4051 1.365944 0.58333 0.45432 4.52 145.99 6.6910 1.2938 1.270345 0.66667 0.50332 4.08 146.10 6.7992 1.2218 1.194046 0.75000 0.54941 3.74 146.21 6.9075 1.1551 1.188547 0.83333 0.59283 3.47 146.30 6.9977 1.1114 1.151948 0.91667 0.63382 3.24 146.37 7.0699 1.2932 1.132349 1.00000 0.67258 3.05 146.39 7.0879 1.2078 1.092450 1.08333 0.70927 2.90 146.46 7.1601 1.2309 1.058551 1.16667 0.74407 2.76 146.50 7.1962 1.1061 1.0424

52 1.25000 0.77711 2.64 146.53 7.2322 1.0933 1.032053 1.33333 0.80853 2.54 146.59 7.2864 1.0775 1.007654 1.41667 0.83844 2.45 146.60 7.3044 1.0457 0.992155 1.50000 0.86694 2.37 146.62 7.3225 1.0220 0.980756 1.58333 0.89414 2.30 146.66 7.3585 1.0336 0.983757 1.66667 0.92012 2.23 146.68 7.3766 0.9965 0.962858 1.75000 0.94496 2.17 146.69 7.3946 0.9854 0.957159 1.83333 0.96874 2.12 146.73 7.4307 1.0079 0.965160 1.91667 0.99152 2.07 146.75 7.4487 0.9518 0.961961 2.00000 1.01336 2.03 146.77 7.4668 0.9496 0.953862 2.08333 1.03432 1.99 146.78 7.4848 0.9497 0.952763 2.16667 1.05446 1.95 146.80 7.5029 0.9082 0.952464 2.25000 1.07381 1.91 146.82 7.5209 0.9129 0.9529


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Pressure at start of test,pi = psiaWellbore storage coefficient, Cs = RB/psiDimensionless wellbore storage coefficient, CD =

Show ALL work below: (no insert work/pages permitted)


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Semilog Analysis: "MDH" Plot Pressure Data versus Shut-In Time

Formation permeability, k = mdDimensionless (pseudoradial flow) skin factor, spr =



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Log-log Plot: Pressure Drop and Pressure Drop Derivative Data versus Shut-In Time ('t) (1 inch x 1 inch)

Formation permeability, k = md (kfrom 'prf': = _________ md)Dimensionless (pseudoradial flow) skin factor, spr =Wellbore storage coefficient, Cs = RB/psi (Cs Unit Slope Line: = _________ RB/psi)Dim. wellbore storage coefficient, CD =



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Pressure at start of test,pwf('t=0) = psiaWellbore storage coefficient, Cs = RB/psiDimensionless wellbore storage coefficient, CD =



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Semilog Analysis: "MDH" Plot Pressure Data versus Shut-In Time




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Semilog Plot: "Horner" Plot Pressure Data versus Horner Time




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Semilog Plot: "Agarwal" Plot Pressure Data versus Effective Shut-In Time




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Log-log Plot: Pressure Drop and Pressure Drop Derivative Data versus Shut-In Time ('t) (1 inch x 1 inch)




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Log-log Plot: Pressure Drop and Pressure Drop Derivative Data vs. Effective Shut-In Time ('te) (1 inch x 1 inch)




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Late-Time Cartesian Plot ("Muskat Plot"): Pressure Buildup Case

Average pressure, p (if applicable) = psia



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Muestra de Un Homework Sobre PTA en TAMU

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