Classification Qualities regarding Oil Casing

Oil casing pipe is a major equipment utilized in oil drilling, the primary tools also contains drill pipe, tube and also casing, drill collar and steel pipe for tiny diameter drilling. Petroleum casing pipe to geological drilling with Gas Steel Pipe soon after scorching rolling or chilly drawn steel made, with "geological" (DZ), steel grade commonly used with DZ40, DZ55, DZ753.Classification together with homes of oil casing as follows.

The casing may be the help about metal together with oil fuel nicely bore pipe. We in most cases use quite a few layers related with casing in accordance with the drilling depth coupled with diverse geological situations. Casing properly right after the cementing, it truly is distinct using the tubing and drill pipe, can't be utilized frequently, which belongs on the disposable consumables. Therefore, the intake associated with oil well pipe casing accounted for more than 70% concerning the total oil. The casing might be divided into: catheter, floor casing, casing and then casing in the well based on the use.

one. The guide sleeve: mostly utilized for Stainless Steel Tube Stockists, desert, to independent the h2o together with sand, make sure drilling smoothly, the main technical specs related with this layer about sleeve ??¡ì? for: 762mm (30in) ?¡§¡é twenty five.4mm, 762mm ?¡§¡é 19.06mm (30in).

two. The area casing: primarily useful for the very first time the drilling, drilling in the bedrock floor gentle strata, to be able to seal the development isn't going to collapse, a floor casing cementing. The leading specifications related with area casing: 508mm (20in), 406.4mm (16in), 339.73mm (13-3/8in), 273.05mm (10-3/4in), 244.48mm (9-5/9in) and so on.. The tube is dependent about the soft strata depth, quite often 80~1500m. The bearing external pressure coupled with internal pressure just isn't massive, the final use associated with K55 steel or N80 steel quality.

3. The engineering relating to casing

Specialized casing used in drilling process for intricate formation, reservoir, reservoir, when layer, layer, leakage layer, salt not to mention gypsum levels such intricate parts collapsed, which all need technical casing cementing, in any other case drilling can not be utilized. Some wells deep and then complicated, plus the depth associated with a few kms, the deep require technical casing some layers, and then the mechanical qualities not to mention sealing functionality requirements are rather higher, the quality of steel employed can also be substantial, with all the exception of J55 Oil casing pipe, far more will be the use related with N80 P110 metal quality, some deep also uses Q125 or increased non API 5l Oil Casing Tube quality steel this kind of as V150. The main specialized specifications of Buy Steel Pipe Online: 339.73mm (13-3/8in), 273.05mm (10-3/4in), 244.48mm (9-5/8in), 219.08mm (8-5/8in) 193.68mm (7- 5/8in), 177.8mm (7in) and so on..

four. The casing

 168.28mm(6-5/8in)??¨¦139.7mm(5-1/2in)??¨¦127mm(5in)??¨¦114.3mm(4-1/2in)|¨¬¡§¡§??¨º

When drilling on the focus on layer (oil, gasoline layer), together with the casing connected with oil and also gasoline reservoirs associated with upper strata to bare all shut, casing interior layer. The mechanical together with sealing overall performance specifications is the biggest, the metal grade K55, N80, P110, Q125, V150 and many others.. The main specs relating to the casing are: 177.8mm (7in), 168.28mm (6-5/8in), 139.7mm (5-1/2in), 127mm (5in), 114.3mm (4-1/2in) and so on..