Oil Extraction Wellhead Operation, function and maintenance

First, open wells (from the injection well):
  • Make sure that the production system is completed and that the flow is smooth enough to accept fluids after well opening.

  • All the valves on the Christmas tree oil oilfield are in the correct switch state and can control the nozzle (adjustable nozzle).

  • Check the wellhead hydraulic and safety equipment status.
Second, shut the well (since the injection well)
Third, in some downhole operations, the operating procedure of the Christmas tree valve is as follows:
  1. Close the well (nozzle, wing valve, purge valve, ground relief valve and main valve) before entering the downhole tool.
  2. Open the oil tree cap, install the high riser, the blowout preventer, and then test the pressure by the riser.
  3. Open the safety valve on the ground, with a fused screw cap on the safety valve to lock the ground safety valve. In the open position, test the reliability of the locking screw cap.
  4.  Lock down the hydraulic control circuit of tubing safety valve and test its reliability.
  5.  Open the main valve and then open the purge valve.
  6.  In the main valve, the label is hanged on the clear and safety valve in order to prevent that other people casually move the valve.
  7.  Down into the downhole tools.
  8.  After the downhole tools rose standpipe, close the main valve and the purge valve.
  9.  BOP riser drainage and unloading, install the tree cap,
  10.  Remove the locking screw cap of the ground safety valve, open the hydraulic locking valve of the tubing safety valve down to remove the tag attached,
  11.  Open well and exploit as instructed.

 Oil Extraction Wellhead Functions 

  1.  Connect all layers of underground casing, seal the annular space of each layer of casing, bearing casing part of the weight.
  2.  Hanging tubing and downhole tools, the weight of all tubing strings in the support well, the annular space between the tubing and the casing.
  3.  Control and regulation of well production.
  4.  Ensure that all underground operations, easy to kill operations, take off operations and other measures for construction and pressure measurement, waxing and other daily production management.
  5.  Acquire the data of hydraulic pressure and casing pressure. 

 Wellhead Tree Maintenance  

The maintenance content of the Christmas tree is: keep the equipment clean and leak-free, no oil, no rust, no loose, no missing parts, the switch of each component is flexible and good.

 As one of the most professional oil extraction wellhead manufacturers in China, RT GROUP offers worldwide customers with quality oilfield supplies and strong back up service together. Welcome to discuss details!


Comments

Post a Comment

Popular posts from this blog

The wellhead installation standardization process

Image
13-3/8 "casing head installation 1. 17-1/2 "drill bit drilling into the design well, pulling out the drilling tool, and then entering 13-3/8" surface casing to predetermined position, cementing. 2. Cut the 20 "catheter, then lift the upper portion of the catheter, with a height difference of 510mm from the 20" catheter, and the line with a rough cut of 13-3/8 ". 3. Remove the broken casing. 4. After measuring the height of the catheter, it should be cut with the height difference of 505mm from the catheter, and then cut 13-3/8 ". 5. Check the original horizontal condition of 13-3/8 with the horizontal ruler, if not, cut the higher part to the level. 6. Use gas cutting method to cut out the - end of the 3/8 "casing preliminary groove, groove in the wheel again into a 10 * 30 °, and asking for groove edges and a smooth feel. 7. The sealing parts of the surface outside casing string and with emery cloth "BT" seal ring wil...
Read more

Casing hangers details

Image
R&T group introduce you the details of casing hanger, which you should know as an oilfield worker. 1. Thread casing hanger. Thread type (i.e., screw-type) casing hanger, the equivalent of a casing collar, without cutting casing (W and WE both need to) save trouble, don't even open the bop can suspension bushing, solve the problem of wellhead suspension seal. But you need to calculate the depth of the casing to avoid the bottom. Generally used in relatively stable production well. The general mandrel (thread type) hanger is used with the threaded casing head, and the corresponding slip hanger can also be replaced. The seal principle of the sleeve head metal and rubber seal is the same as that of the tubing head metal and rubber seal. CASING HANGER BY R&T Group 2. Slip casing hanger. A. The structure of the slip casing hanger: The kava hanger is mainly made up of kava (quartile), kava (two equal parts), rubber seal (two equal parts), supporting seat (two equal pa...
Read more

R&T Tubing head series products

Image
The tubing head is a device or nipple with flanges at both ends. Before perforating, install it on top of the top casing head. To support the tubing, and seal the annulus space between the tubing and the production casing. It also provides an entrance to the casing and tubing ring space through the side outlet. all types of tubing head Function of tubing head. Suspension well tubing string. The annular space between the sealing tubing and the casing. Provide a transition connection for the casing head and the tree. The two sides of the tubing head can be used for water injection and well washing. The structure of the tubing head. The tubing head consists of tubing head, tubing hanger, sealing device, top wire, gate valve, pressure gauge and flange. The top of the tubing is connected to the tree by a flanged flanged flange. The form of the connection is flanged and clamped. 1). Tubing hanger The tubing hanger is a device that sits in the cone...
Read more