pipelinestudio gas simulator module quality_tracking_english_all

8/14/2019 PipelineStudio Gas Simulator Module Quality_Tracking_English_All

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GAS NETWORK TRAINING

MODULE : QUALITY TRACKING


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Gas Network Training

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PipelineStudio Training: Module Quality Tracking ..................................................................... IThe Module ................................................................................................................................... IThe User ....................................................................................................................................... IThe Training.................................................................................................................................. I

Case Study 1 (Qual ity Tracking) .................................................................................................. 1Case Study 1A (Quali ty Tracking)................................................................................................ 6


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PipelineStudio Training: Module Quality Tracking

The Module

The module contains a series of cases; starting with a case that will beused as starting point to generate additional cases.

The cases will illustrate the mixing or blending between different fluidsproperties in the network.

The User

This pipelinestudioTraining Class is intended to the users of the product orsomeone who wants to become more productive using pipelinestudio.

The goal of the pipelinestudiotraining class is to provide a pipeline engineer,

technician or professional with all of the skills and familiarity with the productneeded to allow them to begin making productive and efficient use of the product.

The Training

pipelinestudioTraining is being provided in a laboratory-type environment withthe intent to provide the trainee with an interactive and high-ratio of hands onexperience. The purpose of this is to keep things interesting and provide betteroverall retention by the student.

pipelinestudiotraining is divided into ordered and methodical labs or modules to

allow the user to build on skills obtained from the previous module or lab andmaximize the retention of knowledge associated with this training. Lecture anddiscussion will be incorporated into the labs themselves.


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Case Study 1 (Quality Tracking)

PurposeTo determine the composition of the gas that reaches the deliveries

Important Elements

Supply

Sets of 3 supplies are configured and the fluid at each of these supplies has a uniquecomposition for the gas.

Delivery

The deliveries are configured at minimum pressures and maximum flow; one delivery(D2) has a restriction on the percentage CO2 that it can accept

Tracking Options

Quality tracking has to be enabled for this case to determine the composition of the gasthat the deliveries receive

The Scenario

The system consists of 3 supplies. The fluid at each source has a unique composition. There are

contract limitations because of which the CO2 quantity that is delivered at the delivery D2 and

has to be regulated. Each supply will have constraints with regard to the maximum pressure /

flow. Steady state scenarios have to be run in order to determine the capacity in the network

without violating the contract norms


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Case 1 (Continued)

Case 1

Supply details

Supply Max Flow (mmscfd) Max Pressure (psig)

S1 100

S2 20 (Can vary between 20 and100). To start with it is 20

S3 500

Fluid Properties

Supply Fluid Specific Gravity Heating Value BTU/cf CO2 %

S1 Fluid-1 0.6 980 8

S2 Fluid-2 0.6 1000 5

S3 Fluid-3 0.6 990 8.5

Delivery details

Delivery Max Flow (mmscfd)

Min Pressure (psig)

D1 95 100

D2 80 100

D3 80 100


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Pipeline data (For all pipelines)

Length(miles)

Insidediameter (in)

Roughness(in)

Wallthickness(in)

AmbientTemperature(F)

Heat TransferCoefficient(BTU/h.ft2.F)

10 16 0.001 0.5 50 0.2

Instructions

1) Configure the model (Pipes, supplies, deliveries)2) Turn on Temperature and Quality tracking from Simulations->Options->Generaltab3) Run the model for steady state4) Note the composition of the gas at the deliveries


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Case Study 1(continued)

OBSERVATIONS AND QUESTIONS

1) What are the Steady State pressures at D1, D2 and D3?

Pressure at D1 =

Pressure at D2 =

Pressure at D3 =

2) What is the % of CO2 at the deliveries D1, D2 and D3

% CO2 at D1 =

% CO2 at D2 =

% CO2 at D3 =

3) There is a contractual condition to deliver gas to D2 with a % CO2 content is equal or lessthan 6%. Make the adjustments in the supply S2 to achieve this.

4) What are the flow in supplies S1, S2, S3 and the % of CO2 at the deliveries D1, D2 and D3

S1 = mmscfd % CO2 at D1 =




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Case Study 1(continued)

INSTRUCTORS SOLUTION


1) What are the Steady State pressures at D1, D2 and D3?

Pressure at D1 = 353.11 psig



2) What is the % of CO2 at the deliveries D1, D2 and D3

% CO2 at D1 = 8

% CO2 at D2 = 7.59

% CO2 at D3 = 8.5

3) There is a contractual condition to deliver gas to D2 with a % CO2 content is equal or lessthan 6%. Make the adjustments in the supply S2 to achieve this.

Flow in S2 = 57 mmscfd will be enough to have less than 6 %

4) What are the flow in supplies S1, S2, S3 and the % of CO2 at the deliveries D1, D2 and D3

S1 = 100 mmscfd % CO2 at D1 = 8

S2 = 57 mmscfd % CO2 at D2 = 5.975

S3 = 98 mmscfd % CO2 at D3 = 8.5


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Case Study 1A (Quality Tracking)

PurposeTo determine the gas composition (H2S) that reaches at the delivery point

Important Elements

Supply

Sets of 3 supplies are configured and the fluid of these supplies has two different fluidgas composition.

Delivery

The delivery is configured using maximum flow; this delivery (D1) has a restriction on thepercentage H2S that it can accept. There is a contractual condition to deliver gas to D1with a % H2S content equal or less than 1%. The other three deliveries are configured

just to verify the gas quality.

Tracking Options

Temperature and quality tracking have to be enabled for this case to determine thecomposition of the gas that the deliveries receive

The Scenario

The system consists of 3 supplies and 4 deliveries three of those will be use as a check point to

verify the fluid quality. The fluid at each source has two different compositions one fluid will

contain the H2S value after processing plant and one fluid will have higher value that represent

the H2S when the process plant is out of service. The scenario is about a failure in the processplant and the H2S value has to be carefully monitor to determine the new quality and how long

does it takes the new quality arrive to the delivery or terminal point.


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Use the configuration layout as a reference to configure the network and use the configurationname: Case1A.

Use the following data to configure the network:

Fluid-1properties:

Component Percent

Methane (C1) 90.1

Ethane (C2) 3.3

Propane (C3) 1.3

Isobutane (IC4) 0.5

Isopentane (IC5) 0.5

Hexane (C6) 0.7

Heptane+ (C7+) 0.6

Carbon Dioxide (CO2) 2.5

Hydrogen Sulfide (H2S) 0.5

Fluid-2properties:

Component Percent

Methane (C1) 79.1

Ethane (C2) 7.3

Propane (C3) 3.3

Isobutane (IC4) 0.5

Isopentane (IC5) 0.5Hexane (C6) 0.7

Heptane+ (C7+) 4.6

Carbon Dioxide (CO2) 1

Hydrogen Sulfide (H2S) 3


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Supply-1details:

Fluid Fluid-1

Maximum Flow 1530 MMSCFD

Maximum Pressure 1160 psig

Fluid Temperature 122 Deg FMode Max Pressure

Supply-2details:

Fluid Fluid-2


Maximum Pressure psig

Fluid Temperature 122 Deg F

Mode Max Flow

Supply-3details:

Fluid Fluid-1


Maximum Pressure psig

Fluid Temperature 122 Deg F

Mode Max Flow

Delivery Dummy-1details:






Delivery D1details:



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Valves details:

Pipes details:

Pipe Name Lengthin Miles

Diameter(inside)in inch

WallThicknessin inch

Roughnessin inch

KnotSpacingin Miles

Efficiency

Pipe-1 1.5 39.37 0.314 0.001 1 1

Pipe-2 8 39.37 0.314 0.001 1 1Pipe-3 60 39.37 0.314 0.001 1 1Pipe-4 60 39.37 0.314 0.001 1 1

Pipes details:

Pipe Name AmbientTemperature

Heat TransferCoefficient

Pipe-1 104 0.2

Pipe-2 104 0.2Pipe-3 104 0.2Pipe-4 104 0.2

Color the Pipes by Heating Value according to the following table and colors:

Valve Name CV Size ininches

Valve Name CV Size ininches

Blkv-1 50000 40 Blkv-4 50000 40Blkv-2 50000 40 Blkv-5 50000 40Blkv-3 50000 40 Blkv-6 50000 40


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Instructions

1) Configure the model (Pipes, supplies, fluids deliveries)2) Turn on Temperature and Quality tracking from Simulations->Options->Generaltab3) Select the Equation of State BWRS from Simulations->Options->Fluidtab

4) Color the pipes by Heating Value from View->Network View Properties->Coloring tab5) Hide the coloring pipe Legend from View->Legend6) Select Show Thick Pipes from View->Show Thick Pipes7) Select the trends in delivery D1 (Heating Value and H2S)8) Run the model for steady state9) Select the pipes Pipe-3 and Pipe-4 and open the Heating Value profile10) Tile the windows horizontally from Window->Tile Horizontally11) Start the Interactive Transient from Simulations->Interactive Transient12) Select the supply Supply-3 and ramp the flow value from 40 to 013) Select the supply Supply-2 and ramp the flow value from 0 to 300 (the equivalent of the

process plant failure)14) Press the Start button from the transient toolbar15) Verify the new composition moving using the heating value pipes color and the profile

16) If it is necessary adjust the Time Multiplier to properly view the simulation17) Press Pause after the new product passes the delivery Dummy-3 and mouse over to verifythe new H2S composition.

18) Answer the questions from the next page


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Case Study 1A(continued)


1) What is the % of H2S at the delivery D1 in steady state ?

2) How long does it take the new product arrive to the delivery point D1 ?

3) What is the % of H2S at the delivery D1 in transient scenario

4) Using the Interactive Transient repeat the following steps: 1) Select the supply Supply-3 andramp the flow value from 40 to 0 2) Select the supply Supply-2 and ramp the flow valuefrom 0 to 560 (the equivalent of more process plant failure).




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Case Study 1A(continued)


INSTRUCTORS SOLUTION

1) What is the % of H2S at the delivery D1 in steady state ?


7.06 Hours


4) Using the Interactive Transient repeat the following steps: 1) Select the supply Supply-3 andramp the flow value from 40 to 0 2) Select the supply Supply-2 and ramp the flow valuefrom 0 to 560 (the equivalent of more process plant failure).


6 Hours


0.5 %

0.98 %

1.4 %

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