What is P110 Oil Casing
P110 oil casing is a crucial oil drilling gear, the main tools additionally includes a drill, core and casing pipe, drill collar and small-diameter steel pipe and other drilling. Home steel ca…
P110 oil casing is a vital oil drilling equipment, the principle tools additionally includes a drill, core and casing pipe, drill collar and small-diameter steel pipe and other drilling. Home steel casing are all hot rolled or chilly drawn with geological drilling steel, steel grade with (DZ), widespread casing steel grade are DZ40, DZ55, DZ753 species.
Used as oil effectively drilling pipe.
In accordance with SY / T6194-96 “oil casing”, divided into short thread casing and couplings and lengthy thread casing and coupling two varieties.
3. specs and appearance quality
(1) domestic casing in accordance with SY / T6194-96 regulations, casing length no cut to size, its vary 8-13m. But the casing of no less than 6m could also be offered, which shall not exceed 20%.
(2) the inside and outer surface of the casing shall have no folded, hair sample, separation, crack, rolled off and scarring. These defects needs to be utterly eliminated, and the clear depth shouldn’t exceed 12.5% of the nominal wall thickness.
(3) coupling the outer surface may not have folded, hair pattern, separation, crack, rolled off, scarring and different defects.
(Four) casing and threaded coupling floor must be easy, doesn’t allow burr, tear and impression strength enough to interrupt threads and other defects in close connection.
Four. chemical composition inspection
(1) in response to SY / T6194-96 regulations. Casing and couplings utilizing the same grade. Sulfur content <0.045%, phosphorus content <0.045%.
(2) according to the provisions of GB222-84 chemical analysis of samples taken. Chemical analysis in accordance with the provisions of the relevant parts of GB223.
(3) American Petroleum Institute ARISPEC5CT1988 1st edition rules: Chemical analysis of sample preparation by ASTME59 latest version, chemical analysis according to the latest version ASTME350.
5. bodily performance check
(1) based on SY / T6194-96 rules. For flattening check (GB246-97) tensile testing (GB228-87) and hydrostatic testing.
(2) according to the American Petroleum Institute APISPEC5CT1988 1st edition supplies for the hydrostatic check, flattening test, sulfide stress corrosion cracking take a look crude oil refining process diagram at, hardness test (ASTME18 or the latest version of the provisions E10), tensile test, the lateral impression check (ASTMA370, ASTME23 and the related provisions of the most recent model of the usual), grain dimension determination (ASTME112 latest model or other strategies).
In keeping with SY / T6194-96 rules, domestic casing should be strapped with wire or steel. Each casing pipe and the uncovered portion of the threaded couplings needs to be screwed on the guard ring to protect the threads.
In accordance with the American Petroleum Institute Commonplace APISPEC5CT 1988 1st edition, oil casing steel fraction H-forty, J-55, Ok-55, N-80, C-seventy five, L-eighty, C-ninety, C-ninety five, P- one hundred ten, Q-125 a total of crude oil refining process diagram 10 kinds.
Casing needs to be obtainable with threaded and couplings, or by any of the next delivery:
Flat end, round thread with out coupling or with coupling, buttress thread couplings with or without coupling, direct kind thread, special end processing, ring construction.