Resultados de la conformación de la Comisión Apis tan cerca

Capítulo III. Diseño del proyecto de intervención

4.2 Resultados de la intervención

4.2.1. Resultados de la conformación de la Comisión Apis tan cerca

• Appendix 4: MP16II and CombiGauge depth calculation on page 92

Proceed as follows to prepare the depth measurement system of the MP16II measuring head for operations.

NOTE: The illustrations in Figure 5.1 show the mechanical parts of the depth measurement system for two different types of MPxx measuring head. These are examples only, and the corresponding components on your measuring head may be assembled differently..

1. Ensure that the MP16II is properly mounted for operations, and released from any transport locks.

2. Disable all mechanical movement of the winch, e.g. by operating the unit’s EM WINCH SHUTDOWN or EMERGENCY STOP button.

3. Note the wireline size to be used for the well servicing job (if necessary, using a micrometer).

If there is no drive splitter installed on the angle drive (see Figure 5.1), continue with step 6 below.

4. If a drive splitter is installed (see Figure 5.1), check that the depth counter drive cable is attached to an output of the drive splitter that matches the wireline size.

Normally the two outputs of the drive splitter will correspond to the two wireline sizes installed on either a split drum or dual drum winch. The depth counter drive cable is

WARNING

MOVING PARTS

Moving parts (drum, chain, levelwind, brake, etc.) can cause serious injury or death.

Make sure the winch cannot be operated during maintenance or rig-up activity.

5Setup & transport

attached to a drive splitter with two outputs, mounted on the angle drive. The angle drive and splitter are calibrated to work together Depending on the result, proceed further:

• If the wireline size matches the existing drive splitter output to the depth counter drive cable, then continue with the next procedure to rig up the MP16II.

• If the wireline size matches the other output of the drive splitter, then continue with step 5.

• If the wireline size does not match either of the two outputs of the drive splitter, first install a new drive splitter (See related topic), then continue with step 6.

NOTE: A detailed description of how to combine drive components for specific wireline sizes is provided in the appendix to this manual. See related topic.

5. Switch drive splitter outputs as follows.

Figure 5.1 Depth measurement mechanical parts

MP16BS/HD

1 measuring wheel Turns the depth counter shaft. On the MP16II (as illustrated) and MP20, this is the lower wheel. On the MP16BS & MP16HD, this is the left side upper wheel. The measuring wheel turns with the drive shaft, to which it is attached.

2 angle drive Connected to the end of the depth measurement drive shaft, this device provides a drive reduction while turning the rotary movement axis through 90 degrees. The reduction ratio is stamped on the body.

3 drive splitter Optional feature to make the depth measurement output correspond to one of two possible wire sizes. The corresponding wire size is stamped on the output. As shown, 0.108” or 7/32”.

4 depth counter drive cable Transmits the depth measurement rotary movement to the CombiGauge at the winch control panel. The cable must be connected to an angle drive or drive splitter output that corresponds to the wire size installed in the measuring head.

5 drive cable ring nut Threaded nut. Used to secure the drive cable to the angle drive or drive splitter output.

6 protective cap Must always be in place to protect the unused drive splitter output.

2

1

3

5

6

2

4

5

^MP16II

5Setup & transport

a) Undo the drive cable ring nut and withdraw the drive cable from the splitter output.

b) Remove the protective cap from the second output.

NOTE: The inputs and outputs of the drive splitter and drive cable are a “tongue in groove”

type. These are sensitive connections. Use only the method described below!

c) Ensure that the input and output tongues and grooves are clean and lightly lubricated with fresh grease.

d) Carefully engage the drive cable input to the correct drive splitter output for the wireline size to be used.

e) Firmly tighten the drive cable ring nut, without applying excessive force to the drive splitter.

f) Fit the protective cap over the unused output.

6. Have an assistant monitor the CombiGauge while you perform the next step. The depth counter must register a “depth change”.

7. Check that the depth measuring system is free of friction by spinning the measuring wheel manually. If it turns smoothly and a depth change is registered on the CombiGauge, then the depth measuring system is working properly. Continue with step 8.

If the measuring wheel does not turn smoothly, or there is no movement at the CombiGauge, try to isolate the problem as follows.

a) Detach the depth counter drive cable, and again spin the measuring wheel.

If the measuring wheel now turns smoothly and the output tongue of the drive splitter turns, then the problem is in the drive cable or CombiGauge. Isolate the problem further as follows, then continue with step 8.

• Detach the drive cable at the CombiGauge.

• Insert the blade of a screwdriver in the drive groove at the measuring head end of the drive cable, and spin the screwdriver between your hands. If the cable does not turn smoothly, or there is no movement at the CombiGauge end of the cable, then you must service or replace the drive cable. See related topic.

• If the drive cable passes the previous test, attach it again to the CombiGauge, then re-peat the “screwdriver” test. If the cable now does not turn smoothly, then the

CombiGauge must be replaced or repaired. Contact NOV ASEP Elmar.

b) Detach the drive splitter, and again spin the measuring wheel.

If the measuring wheel now turns smoothly and the output tongue of the angle drive turns, then the problem is in the drive splitter. Install a new drive splitter, then continue with step 8. See related topic.

c) Detach the angle drive, and again spin the measuring wheel.

If it now turns smoothly, then the problem is in the angle drive. Install a new angle drive, then continue with step 8.

d) If the measuring wheel still does not turn smoothly, then the measuring wheel bearings will need to be serviced or replaced. See related topic.

8. If necessary, restore the broken connections in the depth counter transmission.

5Setup & transport NOTE: If the MP16II is equipped with digital depth and tension output, make certain also to

select the correct wireline size in your control software.

5.1.3 Prepare tension measurement system

WARNING

MOVING PARTS

Moving parts (drum, chain, levelwind, brake, etc.) can cause serious injury or death.

Make sure the winch cannot be operated during maintenance or rig-up activity.

5Setup & transport

8. Inspect the load cell for leakage of hydraulic oil. If there is evidence of leakage from the load cell, then the hydraulic bellows of the load cell must be serviced. See related topic.

5.1.4 Thread wireline through the measuring head

Proceed as follows to thread a wireline through the MP16II measuring head.

1. Ensure that the measuring head is properly mounted for operations, and released from any transport locks.

2. Set the wireline winch in operations mode, i.e. that the system is energized and the controls are tested and operational.

3. Using the winch controls, fully lower the levelwind mechanism, and position the measuring head opposite the centre of the winch drum

4. Referring to Figure 5.2, locate the main parts on the wireline path through the measuring head.

5. With one person operating the winch controls and one person pulling on the free end, spool about 5 meters of wire off the drum (the rope socket and/or tool may still be attached) and clamp the wire at the drum to prevent it from uncoiling.

6. Disable all mechanical movement e.g. by operating the unit’s EM WINCH SHUTDOWN or

EMERGENCY STOP button.

7. Position yourself on the open side of the measuring head, so that the vertical subframe members are behind the wheels.

8. Starting from the drum side of the measuring head, thread the wireline through the measuring head as follows:

a) Lift the wire from nearest the drum between the drum side guide rollers (A) and into the groove in the upper wheel (C) furthest from you.

b) Loosen the wire retainer (D) on the well side from the upper guide wheel, feed the wire down under the retainer, and tighten the retainer. Pull the wire tight.

c) Lifting then releasing each of the wire pressure wheels (F) in turn, feed the wire down on the well side, under the measuring wheel (E) and up again on the drum side. Pull the wire tight.

d) Loosen the wire retainer (D) on the drum side from the upper guide wheel, and feed the wire up into the groove in the upper wheel (C) nearest you. Tighten the retainer.

WARNING

MOVING PARTS

Moving parts (drum, chain, levelwind, brake, etc.) can cause serious injury or death.

Make sure the winch cannot be operated during maintenance or rig-up activity.

WARNING

RISK OF INJURY FROM WIRELINE.

1. Wirelines can have sharp points caused by snags and wear.

2. Small pieces of wire can be ejected from a wireline moving at high speed.

Always wear suitable gloves and eye protection, when handling or working around wireline.

5Setup & transport

e) Feed the wire further over the upper guide wheel, and out between the well side guide rollers (B) in the direction of the well. Pull the wire tight.

9. Unclamp the free wire from the drum.

10. Enable winch movement again e.g. by releasing the unit’s EM WINCH SHUTDOWN or

EMERGENCY STOP button.

11. With one person operating the winch controls and one person pulling on the free end, spool sufficient wire off the drum through the measuring head to be able to clamp the wire to an object beyond the winch, e.g. at the wellhead.

12. At the winch control panel, once the tool string is rigged up and ready for use, but without tension on the wireline:

a) Pull on the CombiGauge depth odometer zero knob, to zero the depth reading.

b) Turn the CombiGauge wireline tension zero knob to set the tension needle to zero.

Figure 5.2 Threading the wireline

to wellhead

drum

wireline

A drum side guide rollers (2x) B well side guide rollers (2x) C upper guide wheels (2x) D guide wheel wire retainers (2x) E measuring wheel

F measuring wheel wire pressure wheels (2x)

A C B

D D

E

F F

5Setup & transport

The measuring head is now correctly threaded with wireline for operations.

NOTE: If the measuring head is equipped with analogue depth output, make certain that the depth counter drive cable is connected to the correct drive splitter output.

NOTE: If the measuring head is equipped with digital depth and tension output, make certain also to select the correct wireline gauge in your control software.

5.2 Measuring head rig-down

To rig-down the MP16II measuring head after operations, there are two procedures:

• Unthread wireline from the measuring head

• Lock measuring head for transport

5.2.1 Unthread wireline from the measuring head

Proceed as follows to unthread a wireline from the MP16II measuring head.

1. Ensure that the winch is in the following safe state:

• The levelwind support arms are in the operating position with the MP16II positioned roughly opposite the centre of the drum.

• The winch is in manual mode, if applicable, i.e. the automatic control program (e.g.

SmartMonitor) has been disabled.

• The tools have been detached, and the wireline is almost fully spooled onto the drum except for the last few metres.

• The winch is fully shut down, and there is no hydraulic pressure and no pneumatic pressure showing on the pressure gauges of the winch control panel.

• All possible mechanical movement is disabled by pressing either the EM WINCH SHUTDOWN

or EMERGENCY STOP button.

2. Clamp the wireline to the drum to keep it from uncoiling.

3. Release the free end of the wireline.

4. Position yourself on the open side of the MP16II, so that the vertical subframe members are behind the wheels.

WARNING

MOVING PARTS

Moving parts (drum, chain, levelwind, brake, etc.) can cause serious injury or death.

Make sure the winch cannot be operated during maintenance or rig-up activity.

WARNING

RISK OF INJURY FROM WIRELINE.

1. Wirelines can have sharp points caused by snags and wear.

2. Small pieces of wire can be ejected from a wireline moving at high speed.

Always wear suitable gloves and eye protection, when handling or working around wireline.

5Setup & transport 5. Starting from the well side of the MP16II, unthread the wireline from the measuring head as

follows:

a) Loosen the wire retainer on the drum side from the upper wheel, and withdraw the wire from the nearest upper wheel out of the top side of the measuring head. Retighten the retainer.

b) Release each of the lower wire pressure wheels in turn, and withdraw the wire from the measurewheel in the lower section of the measuring head.

c) Loosen the wire retainer on the well side from the upper wheel, and withdraw the wire from the furthest upper wheel out of the top section of the measuring head. Retighten the retainer.

d) Withdraw the remaining wire from the top side of the measuring head.

6. With one person maintaining tension on the free end, unclamp the wireline from the drum.

7. Enable winch movement again e.g. by releasing the unit’s EM WINCH SHUTDOWN or

EMERGENCY STOP button.

8. Carefully spool the remaining free wireline onto the drum, then clamp the wire to the drum.

The MP16II is now ready to be locked for transport or threaded with a different wireline size.

5.2.2 Lock measuring head for transport

Refer to your winch manual for instructions.

6Maintenance

6 MAINTENANCE

Introduction to MP16II maintenance

For a general description of the MP16II measuring head, its main components, and the operating principle of this device, please refer to the description section of this manual.

NOTE: Unless otherwise stated, all maintenance procedures described in this manual must only be carried out with the applicable winch shut down. Never perform maintenance on the MP16II while it is mounted in a winch that is running.

WARNING

MOVING PARTS

Moving parts (drum, gearbox, chain) can cause serious injury or death.

Make sure the winch cannot be operated during maintenance or rig-up activity.

6Maintenance

6.1 Periodic maintenance schedule

Maintenance procedure Page

Service interval

daily 300 hrs 600 hrs 900 hrs 1200 hrs 1500hrs 1800hrs

General inspection for damage or contamination;  spin the guide rollers and check for free movement,

wipe down levelwind shaft & support bearing

6.6 Lubricate measuring head 42 

6.7 Service measuring head support bearing 44 

6.9 Remove/install upper wheels and bearings 50 

6.10 Remove/install measuring wheel and bearings 53 

6.18 Service tension measurement hydraulic load cell 70 

6.4 Safe maintenance shutdown 38 As required

6.5 Remove/install measuring head in winch 40 As required

6.8 Check/adjust autospooling 46 As required

6.11 Remove/install drive splitter 55 As required

6.12 Remove/install depth counter drive cable 58 As required

6.13 Remove/install angle drive 59 As required

In document Apis tan cerca. Una intervención para la apropiación del Aprendizaje en Servicio con personas colaboradoras de una institución educativa. (página 51-56)