Here Xiaobian first gave an introduction to the construction steps of wellbore signal cables:

First, the decentralization of the cable 1. Before construction, the person in charge of the construction inspects the signals, tools and materials again to ensure that the signals are reliable and the tools and materials are qualified.

2. Clean debris around the wellhead to prevent debris from falling and set warnings.

It is forbidden for crowds of people to look around.

3. The construction personnel will open the cable, leave enough headroom for the wellhead and tie it to the derrick at the laying point. The remaining cable will be placed on the top of the bucket.

4. The wellhead signal is dialed to the inspection position. The winch driver toggles the control switch to the inspection position, ready to drive, and drive or stop according to the signal given by the wellhead signaler.

5. When the construction staff is ready, tell the person in charge of the construction. The person in charge of the construction shall relay the signal to the signalling worker and then the signalling worker will send a driving signal.

6. When the cable is lowered into place, the construction crew in the wellbore sends a stop signal notification signal to send a stop signal.

7. The winch driver receives a stop signal and stops immediately.

8. The construction staff in the wellbore handed the cable to the construction staff at the nose of the belt conveyor. The construction personnel here pulled the cable to the designated location and fixed it, leaving a surplus line of 1 to 2 meters.

Second, the cable is fixed. 1. The construction personnel in the wellbore stand up on the bucket and fix the cable to the cable card. After the bandage is tight, the person in charge of the wellhead construction is informed to tighten the cable and fasten it firmly, and then notify the inside of the wellbore. Construction workers.

2. After the construction staff in the wellbore receives the notification and sends a driving signal, the construction manager will send the signal to the signaler.

3. After receiving the notification, the signal maker will send a message to inform the winch driver to drive.

4. The winch driver slowly starts the winch and raises it to the wellhead position.

5. The construction personnel in the wellbore informs the person in charge of the construction to let the signal operator notify the winch driver to drive.

6. When the bucket is lowered to 6 meters, the construction crew in the shaft informs the person in charge of the construction that the signal worker will stop. After the winch has stopped, wind up the windscreen cloth on the cable and tie the cable tightly on the cable card.

7. Repeat steps 5-6 until the lashing is completed.

8. The construction personnel in the wellbore informed the person in charge of construction to raise the position of the winch to the wellhead.

8. The construction staff in the wellbore counts the tools and removes the safety belt from the bucket.

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CASING

Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells or wellbore.


It is inserted into a well bore and cemented in place to protect both subsurface formations and the wellbore from collapsing and to allow

drilling fluid to circulate and extraction to take place

The oil casing is a steel pipe used to support the well wall of oil and gas wells to ensure the normal operation of the whole well during drilling and after well completion. Several layers of casing shall be used for each well according to different drilling depth and geological conditions. Cement shall be used for cementing after casing is put into the well. It is different from TUBING and drill pipe and cannot be reused. It is a disposable consumable material. Therefore, casing consumption accounts for more than 70% of all oil well pipes.

Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or wellbore. It is inserted into a well bore and cemented in place to protect both subsurface formations and the wellbore from collapsing and to allow drilling fluid to circulate and extraction to take place.


Surface casing


- Protects the well from contamination in shallow water and gas layers.


- Supports the wellhead equipment and sustains the weight of the other layers of casing.


Intermediate casing


- Isolates different layers of pressure to facilitate normal circulation of drilling fluid and protect the production casing.


- Intermediate casing facilitates the installation of blow-out preventers, anti-leakage devices and tailpipes in the well.


Production casing (oil string)


- It is the conduit through which oil and gas pass from a below surface reservoir.


- It protects the well and separates fluids into various layers.


First, green pipes are threaded on each end. The threading is then inspected and, if necessary, rethreaded to ensure that the thread accurately connects to the coupling. The threading type includes STC/BTC/LTC. The casing pipes are strengthened by surface treatment and are subject to various inspections, including drifting and hydrostatic tests before they are coated and packaged into casing.


Casing pipes are ordinarily produced with outside diameter sizes of 114.3 mm to 508.0 mm.

Casing,Api 5Ct Casing,Api Spec 5Ct Casing PipeApi 5Ct Pipe Oil Casing

ESASTSUN OILFIELD EQUIPMENT MANUFACTURING (CAMBODIA) CO., LTD , https://www.eastsuncambodia.com