well control equipment1 fhfz.ppt

5/21/2018 well control equipment1 FHFZ.ppt

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Well ControlEquipment

Chapter 1 Summarization

1. Conception & function of WCE

2. Compositions of WCE

3. Characteristic of hydraulic BOP

4. Parameters of hydraulic BOP

5. BOP stacks

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What is WCE?

A complete set of equipment, instruments and tools

for operations of oil/gas well control.

1-1 Concept ion & funct ions of WCE

Functions of WCE

Blowout preventionKick detectionControl blowout promptlyTreating complications

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To shaker

To mud pit

1-2 Compos it ions o f WCE

Accumulator

Auxiliary

control panel

Air control

lines

BOP Stack

Kill line

Control

lines

Choke

manifold

Mud pump & tank

Remote control panel

Mud tank & accessories

DegasserVacuum degasser

Drillers control

panel

Upper Kelly cock

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To flare pit

Remote control unit


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1-2 Composit ions o f WCE


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1-3 Characteristic of hydraulic BOP

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1.Fast action

Shutin time:Ram BOP3~8SAnnular BOP: 30S Gate valve: 3 s2. Convenient operation

Easy operated with air hydraulic controlledequipment3. Reliable & safe

Several control points of remote control, drillers control, auxiliary

control and manual control

4. Quick site maintenance

Easy to change parts


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1-4 Parameters of h yd raul ic BOP

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Nominaldiameter

Ratedworking

pressure

Definition: Inner fullhole diameter mm

180mm230mm280mmTypes:346mm426mm476mm

528mm540mm680mmDefinition: Maximum rating pressure MPa

Types:14MPa21MPa35MPa70MPa105MPa

Notes: yellow being available in ZPEB area


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1-5 Model num ber of hydraul ic BOP

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Before 1985

KPY-Maximum workingpressure, kgf/cm2

Nominal inner diameter, cm

Exploration, WC & hydraulic

Note: No mentioned BOP type


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1-4 Parameters of h yd raul ic BOP

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Nominaldiameter

Ratedworking

pressure

Definition: Inner fullhole diameter mm

7 inch,9 inch,11 inch,

Types:13 5/8 inch,16 inch,18 inch,

20 inch,21 inch,26 inch

Definition: Maximum rating pressure MPa

Types:1 M,2 M,3 M, 5 M,10M,

15M

Notes: yellow being available in ZPEB area


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After 1985

-Max. workingpressure, MPaNominal inner diameter, cm

Type code

FZSingle ram BOP

2FZDouble ram BOP3FZThree ram BOP

FHAnnular BOP

API code

R -Ram

Rd -Double RamsRt -Three Rams

A -Annular

S -Spool


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1-6 BOP Stacks

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Take consideration of:

1. Size

Match with wellhead and casing size

2. Rated working pressure

Must be higher than predicted maximum

wellhead pressure

3. Type & numbers

Be suitable for sealing in differentborehole condition


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1-6 BOP Stacks

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14 MPABOP Stacks

1S+A 2S+SR+SR 3SR+S+SR S+SR+A


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1-6 BOP Stacks

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21MPa35MPa BOP Stacks

S+SR+SR+A 4SR+S+SR+A


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1-6 BOP Stacks

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70MPa105MPa BOP Stacks

5CH+SR+S+SR+SR+A

6CH+S+SR+SR+SR+A

CH+SR+S+SR+SR+SR+RBOP


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1-6 BOP Stacks

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4 types of Wellhead of ZPEB

CH+SR+S

+SR+SR+ACH+S+SR

+SR+A

Type 1 Type 2


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1-6 BOP Stacks

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CH+S+SR+A

Type 3

CH+S+SR+SR


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1-6 BOP Stacks

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CH+S+A

Type 4

CH+S+SR


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Conception and composition of WCEWhich pressure grades and sizes of BOP areoften used in China

Point out the parameter of each as followsKPY28-210 FZ23-21 FH28-35

2FZ35-21 KPY35-350 FZ54-14Types of BOP Stacks

Quest ions


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2Annular BOP1. Functions of annular BOP

2. Types of annular BOP

3. Taper rubber4. Ball rubber

5. Compound rubber

6. Comparison of rubbers

7. Technical specification8. Cautions

9. Maintenance & repairs

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2-1 Functions of annular BOP1. Open hole sealing

No any tubular in borehole

2.Annulus sealingTubular

exists in borehole

3Stripping in/outWith 18o

tapered drill pipe, reducing

control pressure


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2-2 Types of annular BOP

Ball rubber

Compound

rubber

Tapered rubber


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2-3 Taper rubber annular BOP

Structure

Scout Rubber

Dustproof

ringOil outlet

Piston

Open cavity

Close cavity

Support

cylinder

Body

Coping

Oil outlet


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2-3 Taper rubber annular BOPScout Rubber

Dustproof

ringOil outlet

Open cavity

Piston

Close cavity

Support

cylinder

Body

Coping

Oil outlet

Close:OilClosecavityPistonupRubber upconfined bycopingcontracting andbeing squeezed tothe center andclose BOP

Principle

Open:OilOpen cavityPiston down Release squeezingforceRubberrecover byelasticity and openBOP


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1. Rubber

Taper rubberLarge rubber storeAuto-recoverEasy to change rubber

Change rubber directly in

open hole

Change rubber by cuttingwith tubular in borehole

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2-3 Taper rubber annular BOPCharacteristic


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2-3 Taper rubber annular BOP2.Piston

Long sealingsectioncentralizingAnti-wearingHigh dimension.Auto-sealingBorehole pressurepush piston up so as tosqueeze rubber tight


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4 Sealingposition


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2-4 Ball rubberannular BOP

Structure

Coping

Dustproof

ring

Rubber

Piston

Body

2 4 B ll bb l BOP


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Principle

Close cavity outlet

Open cavity outlet

Close:OilClose cavity

Piston upRubber

up,confined by

coping, contracting

and being squeezed to

the center and closeBOP

Open:

OilOpen cavityPiston

down Release

squeezing forceRubberrecover by elasticity and

open BOP

2 4 B ll bb l BOP


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Characteristic

1.Rubber

Ball typeLarge rubber storeAuto-recoverFunnel efficiencyEasy to change rubber Less friction, largequantity of oil

for control


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Funnel efficiencyWhen closing, rubbermoved up near coping soas to make rubberscollection looks like areversed funnel.Borehole pressure pushbottom of rubber as aauxiliary power forsealing.This help to let tubularjoints pass throughrubber and reduce rubberwearing.


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2.CharacteristicShort sealingsectionBadcentralizingEasy forwearingLower dimension

2 4 B ll bb l BOP


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3. Sealingpositions4. Auxiliary sealingsourceBoreholepressure pushbottom ofrubber as aauxiliary powerfor sealing.

2 5 C d bb l BOP


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Structure of

compound rubber

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2-5 Compound rubber annu lar BOP

Structure

Full

open

With tubular Full close

Distortion of inner

rubber

2 5 C d bb l BOP


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Principle

CloseOilClose cavityPiston

move-upPusher plate

pushing outer rubber

Outer rubber move to

centerInner rubber

furlingPacker insert turn

and move to centerClose

borehole

2 5 C d bb l BOP


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Principle

Open

OilOpen cavity

Piston move-down

Pusher plate returnback-Squeezing force

removedInner & outer

rubbers turn back by

elasticity Open

borehole

2 5 C d bb l BOP


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Characteristic

Inner outer rubbersComplicated structureImproperly close with new rubberLess dimension weightunavailable with cutting rubber changeLess deformation with inner rubber, lessoil for

controlLess rubber wearing, long rubber life

2 6 Comparison of annu lar BOP


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2-6 Comparison of annu lar BOP

Structure Simple Simple Complex

Totally close OK OKWorse with

new one

Rubber

change at site

Directly or by

cutting

Directly or by

cuttingOnly directly but

no way by cutting

Rubber life Short Long Long

Oil quantity

of operation

2

Medium

3

More

1

less

Dimension Thin, high Thick, short Thin, short

Weight Medium Heavy Light

Annular BOP Type

2 7 Specif icat ion of annular BOP


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2-7 Specif icat ion of annular BOP

Model

Nominal

diameter

mm (in)

Max.

work

pressure

M pa

Shut-in

time

S

Control

pressure

MPa

Dimension mm

Outer

diameter Height

FH23-35 230(9) 35 < 30 10.5 900 1090

FH28-35 280(11) 35 < 30 10.5 1000 1205

FH35-21 346(13) 21 < 30 10.5 1050 1117

Specification of taper rubber annular BOP

2 7 Specif icat ion of annular BOP


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2-7 Specif icat ion of annular BOP

Model

Nominal

diameter

mm (in)

Max.

work

pressureMPa

Shut-in

time

S

Control

pressure

MPa

Dimension mm

Outerdiameter

Height

FH28-35 280(11) 35 < 30 10.5 1138 1056

FH35-35 346(13) 35 < 30 10.5 1270 1165

Specification of ball rubber annular BOP

2 8 Cautions


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2-8 Cautions

No totally close test at siteClose with tubular regular only

Oil pressure range8.5~10.5MPaMax. pressure: 15MPa

No totally close annular BOP for long period

2 8 Cautions


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2-8 Cautions

For snub in/out operation, only use 18o shoulder drill pipe,

meanwhile, adjusting regulate valve to release fluctuation

pressure as to postpone rubber life

2 8 Cautions


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2-8 Cautions

In closing status, tubular could be movedup/down slowly only. No rotating drill string. No

releasing pressure through annular BOP.

Rubber parts must be stored in a lowertemperature of 27 and dry house. Keep awayfrom electric-arc equipment. No using after

expiration date.

2 8 Cautions


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2-8 CautionsDaily maintenance

After rig-up at site, test BOP as per standard.

After entering production zone, test BOP ateach tripping time.

Test annular BOP with

70% of rated working pressure

After each opening, check if BOP is fullyopened to avoid damaging rubber by tubular.

After special operation, wash & clean rubberchamber.

2 9 Troubleshoot ing


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2-9 Troubleshoot ingImproperly sealing of annular BOP

With new rubber,close & open several times. Ifit is a used rubber, and support frame closed

properly, that means rubber consumed too much.

Change rubber core.

Used rubber worn out and some rubber blockdropped off , cause sealing improperly. Change

rubber core.

Keeping open long term without moving,impurity deposited in rubber chamber. Clean &move rubber timely.

2-9 Troubleshoot ing


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2-9 Troubleshoot ing

Fail to open BOPLong term closing caused rubber deformation. Or

cement deposited in rubber chamber after cementingjob. Need to be thoroughly cleaning.

BOP operating slowlyBefore connecting hydraulic control lines,blow lines with compressed air and cleanconnections.Oil leaking in control lines. Or controllines were blocked by impurities.


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2Ram BOP1. Functions of ram BOP

2. Types of ram BOP

3. Structure of ram BOP

4. Job principle of ram BOP5. Structure specialty of ram BOP

6. Side door of ram BOP

7. Lock device of ram BOP

8. Specifications of ram BOP9. Properly using of ram BOP

10. Troubleshooting

Well ontrol Equipment

3-1 Functions of ram BOP


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4Replacing spoolSide flangeof BOP to be used as spool for

connecting choke line and kill line

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3 1 Functions of ram BOP

2Sealing annulus Seal annulus

with available pipe ram

1Totally sealingSeal open hole with

blind ram

3Shearing pipeDrill pipe to be

cut off in case of emergency

3-2 Types of ram BOP


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Single

Do

uble

Thr

ibble

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3 2 Types of ram BOP

As per ram numbers As per ram shape

Type

B

lind

P

ipe

S

hearing

V

ariable

3-3 Structure of ram BOP


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3 3 Structure of ram BOPStructure figure

Side flange

Up hinge

Down hinge

Side cover

Body

Side door

Locking axle

Cylinder

Piston & rod

Rams

Injecting outlet

3-4 Job principle of ram BOP


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3 4 Job principle of ram BOPClose

Oil in close inletOil path in shellHinge

seatOil path in side doorOil path in

cylinderOil path in cylinder cover

Closing port

OpenOil in open inletOil path in shellHinge

seatOil path in side doorOpening port

3-5 Structure specialty of ram BOPBOP


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3 5 Structure specialty of ramBOPBOP

4. Sidedoor cavity & rod

3. Side door & shell

2. Top ram & shell

1. Front ram & tubular4 sealing areas

2nd sealing device


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3-5 Structure specialty of ramBOPBOP

3-5 Structure specialty of ram BOP


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p y

Auxiliary source from borehole

1.Rams to be pushed

by downhole pressure tostrengthen contact versus

shell

2.Even high pressure exist

in closing process, as surface

area of piston is larger than rod,

with lower system pressure easy

to control borehole higherpressure

Note: Area ratio of piston versus rod is called pressure ratio

3-5 Structure specialty of ram BOP


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p y

Auto cleaning

2 ditches on bottom ofram cavity to be cleaned by

ram as soon as moving to

prevent blocking of sand

Auto centering

Front bulge of rams to fit

opposite groove, triangle bulge

help to push unlined tubular tocenter of borehole

3-6 Side door of ram BOP


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2.Hinge move

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Functions1.To seal ram port 2.To transfer oil 3.Toinstall two way seals

1.Straight moveType

Sid d f BOP


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Side door of ram BOP


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Rules of side door operation

1.Two sidedoors cant be opened at same time

2.Only using hydraulic control when side door fully

opened or tightened to shell

3.Releasing pressure when rotating side door

4.After opening side door, tight it when usinghydraulic control to prevent moving



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Sequence of changing ram

1.Release pressureSwitch to be in center in accumulator

2.Open side doorTake off fixing bolts, rotate door open

3.Hydraulic closing ramMake ram extrude out of cavity

4.Take off old & fix a newInstall properly

5.Hydraulic opening ramMake ram shrink to cavity

6.Close side doorRotate sidedoor to close then tighten up bolts

7. Pressure testTest BOP as per rated pressure

3-7 Lock device of ram BOP


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Auto. lock device

Lock device Handle lock device



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Auto. lock deviceHydraulic

controlled lock device, locate in place

where is unavailable for men working

Operation specialtyAfter closing rams,

system complete locking automatically,

before opening rams, system unlock

device automatically

Disadvantage: Unavailable closing by

hand if hydraulic system is out of

control



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Functions of handle lock device

2.Closing BOP by manpowerIn the

case of system failure, ram BOPcould be closed by turning lock

device

1.Ensure long term closingAfter closing

ram BOP, by using lock device, control

pressure could be released to prevent

control lines leaking and misoperation



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Thread bar

Types of manual lock device

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Simplicity


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Simplicity

Spline bar



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Makeup of manual lock device

R o d L o c k s h a f t O i l c y l i n d e r

Gimbal

Handwheel



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Thread bar structure


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Ram

Shell

Rod

Side

door

V seal ring

Piston

Fixing nuts

Spline bar case

Spline axis

Cover

Seal ringRubber

bowlCylinder

Spring clip ring

Plate

BoltsThrust

bearing

Spline bar structure


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weep hole[](, )[]()



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Simplicity structure



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Manual lockTurn

clockwise in

place then

~ round

back

Manual unlockTurn counter

clockwise in

place then~ round

back

Main points of operation



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Closing steps of ram BOP

1.Closing BOP with hydraulic system

Normal practice

2.Using manual lock device

3.Releasing hydraulic pressure



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Closing steps of ram BOP

1.Handle of switch to be in closing position

Special practice(Failure of hydraulic control)

2.Manual closing ram BOP

3.Handle of switch to be in central position



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Opening steps of ram BOP

1.Manually unlock device

2.Open rams with hydraulic control

3.Releasing hydraulic pressure



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Status judgement of lock mechanism

Status figure of Thread bar structure



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Status figure of Spline bar structure



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Status figure of Simplicity structure

3-8 Specifications of ram BOP


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Size

9 11 13 5/8 21

28

Rated pressure

1000 psi

2000 psi

3000 psi

5000 psi10000 psi

15000 psi

3-9 Properly using of ram BOP


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Cautions

Size of rams to be applied to tubularBlind rams to be used in open hole condition onlyManual lock device to be used for long term closing,leave rams control switch in central position



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Before releasing lock device, dont open rams withhydraulic system, dont move tubularDont rotate tubular before opening ramsManual lock device cant open rams, onlyway to open rams is to release lock device firstly

and then open rams with hydraulic system



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Daily maintenance

After entering production zone,function test rams each trip

Use lock device for long term closing, hanging upwarning sign in control panel

Test ram BOP with full rated workpressureCleaning inside BOP thoroughly after cementing jobNever release borehole pressure by opening ramBOP

3-10 Troubleshooting


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1.Change seal ring

2.Tighten all nuts3.Cleaning seal area

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1. Downhole fluid

flows out from

connectionbetween shell and

sidedoor

1. Sealing damagebetween shell and

sidedoor

2. Loose bolts

connection between

shell and sidedoor3. Impurities exist in

seal ring



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Rearrange BOP control lines

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2. Ram

movingdoesnt fit to

switch plate Control linesbeing connectedwrong



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Clean rams and sidedoor

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3. Rams

couldnt be in

place even

control system

seems ok

Sand, muddy silt

or impurities

exist in ram

contacting area



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Change rod O ring,repair damaged rod

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4.Downhole

fluid flows to

cylinder mixing

with hydraulic

oil

Rod O ring

damaged, rod

deformed or rod

surface damaged



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Change O ring or new

parts, repair sealing

surface

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5. Unstable

hydraulic system of

BOP control Damage of

cylinder, rod,

rod O ring or

sealing surface



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Repair sealing surface,Or change O ring

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6. Oil leaking inhinge area

Damage of

sealing surface

or O ring



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Change rubber seal,repair sealing area

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7.Impropersealing after

closing BOPRubber seal

damage, or sealing

area failure of ram

chamber



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Clean silt/sand,raise control pressure

8.Fail to open

BOP even

control system

seems ok

Ram stuck by

silt and sand

well control equipment1 fhfz.ppt

Documents

control equipment1

composit ions o f wce5212018

ions of wcefunctions

kgfcm2nominal inner

mpanominal inner diameter

parameters of hydraulic

sannular bop

bop stackszpe5212018