Standard Open Loop Hydraulic Circuits Review

8/4/2019 Standard Open Loop Hydraulic Circuits Review

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Module CT05

Standard Open Loop

Hydraulic Circuits Review



Outline

This presentation created to summarizethe standard open loop hydraulic circuits.

It is divided into two main parts:

Power Pack and Control Cab HydraulicCircuits Review

Well Control, CT Reel and Injector HeadCircuits Review



Module CT05

Power Pack and ControlCab Hydraulic Circuit

Review



HR240 Open Loop Power PackInjector Circuit





HR240 Open Loop Power PackReel Circuit



HR240 Open Loop Power PackPriority Circuit



HR240 Open Loop Power PackLevelwind Override Circuit



HR240 Open Loop Power PackBOP Circuit



HR240 Open Loop Power PackAuxiliary Circuit



Control Cabs

Controls and Gauges to monitoring the CTUOperations

Hydraulics Differences

The control panels will differ depending on the type of

power pack to be controlled



Injector Controls and GaugesOpen Loop Power Pack



Chain Traction Controls andGauges

Open Loop Power Pack



Chain Tension Controls andGauges




REEL and LEVELWIND CONTROLS /

GAUGES




REEL and LEVELWIND CONTROLS /

GAUGES


Raise/Lower

Arms



Stripper Packer Controls andGauges




Stripper Packer Controls andGauges




BOP Controls and GaugesOpen Loop Power Pack



Module CT05

Well Control, CT Reel andInjector Head Circuits

Review

BOP



BOPCircuit

BlankSystem found in theCTOM section 310.1page # 15 of 38.



SystemBlank



Reel CircuitBlank



POOH Animation3

1

4

2

7

5

9 8

1011

12 13

15

14

16

18

17

6

LevelwindSupply

CONTROLCABIN

CT REEL

POWERPACK

Prioritysupply

Pump provides pressurizedfluid,

causing Reel Drive motor to spin

Return line carries the fluid back tothe tank



RIH animation

3

1

4

2

7

5

9 8

1011

12 13

15

14

16

18

17

6

LevelwindSupply

CONTROLCABIN

CT REEL

POWERPACK

Prioritysupply

•Normal POOH motor spin•Actual spin while RIH

Pushes fluid backwardtowards the 4-way valve

up to the Relief Valve

•Pump provides fluidup to the relief valve

•BOTH flows get vented

by the relief valve

•The back-pressure (80psi)on the return line feeds the motor



Circuit

•Currently, 60 GPM is On & 30GPM is Off (18), Low Speed (27)

•Monsun Tison (22) get 450 psifrom the priority Circuit viaReducing valve (25)• Moving the Monsun Tison toRIH/POOH position, result inshifting the Husco Valve(9)

•The Husco Valve direct the flow

to the injector head drive motor(38)• the 60 GPM pump excessflow and 30 GMP pump flow isdirected to the reservoir

•175 psi is maintained in thereturn line via the back

pressure valve(10)•The injector brake will befully released by applying 600psi via the reducing valve(35)

•450 to 500 psi pilot pressurefrom the motor inlet is requiredto open the conterbalancevalve(31)

How does the injector HeadWork?

S li



How does the injector Headcircuit run the spooling reel?

• When the spooling reel motorworks as motor, the injectorcircuit works normal (see theinjector circuit animation)• Note that the high low

selector is not active.

Spoolingreel

• Note that valve No. 7( Spooling Relief control valve)should be open which activatethe spooling valve.• During spooling, 30 GPM – onposition, 60 GPM-Off position.

SPOOLING REEL WORKSAS MOTORBack Tension

HighPressureReducedPressureReturn to thetankPilot line

Spoolingusing standard open

loop power pack

S li



• The circuit shows thehydraulic system when thespooling reel works as motor

Spooling

using standard openloop power pack

Spoolingreel

SPOOLING REEL WORKS AS PUMPBack Tension

• When the spooling used toapply back tension, The spooling

motor works as a pump.

• What will happen, when thespooling reel used to apply back tension?

• The spooling motor pushes thefluid backward through thespooling relief valve (6).

• Both 60 GPM and 30 GPM getvented through their relief valve

How does the injector Headcircuit run the spoolingreel?

• The back pressure (175 psi)on the return line feeds themotor

Standard Open Loop Hydraulic Circuits Review

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