Method for producing casing pipe for thickened oil thermal production well
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology for thermal recovery of heavy oil and thermal recovery wells, which is applied in the direction of casing, drill pipe, earthwork drilling and production, etc., which can solve the problems of high price, increased oil field production cost, low plastic strain and allowable strain, etc.
Active Publication Date: 2014-03-19
PANGANG GROUP CHENGDU STEEL & VANADIUM +1
View PDF3 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, it is expected that the design concept of the casing for thermal recovery wells is based on strain design, which allows a certain plastic strain after the casing is in service, but the plastic strain generated after the casing is in service is not higher than the specified allowable strain, In addition, the fatigue life prediction of thermal cycle temperature load may cause fatigue
[0004] Due to different design concepts, the composition of steel pipes for thermal recovery wells is different. At present, oil casings for heavy oil thermal recovery wells in China mainly use Cr-Mo steel, such as TP110H (30CrMo) designed and developed by Tianjin Seamless Steel Tube Company, but its High prices add to production costs across fields
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0008] The method for manufacturing casings for heavy oil thermal recovery wells provided by the present invention comprises the following steps: steelmaking and continuous casting, steelmaking includes primary molten steel, deoxidation alloying and refining, in primary molten steel, controlling the Carbon is not less than 0.06% by weight and phosphorus is not more than 0.003% by weight, and the tapping temperature range is controlled to be 1620°C to 1660°C. During refining, BaSiAlCa deoxidizer or Ca-based deoxidizer is added at 2.5 to 3.5kg / t, and Add Al block at 1.0kg / t for deoxidation alloying. After refining, feed Ca-Si wire at 0.6~0.8kg / t outside the furnace, and control the intensity of argon blowing to keep the molten steel peristaltic and the molten steel must not be exposed. Control the net blowing time ≥ 12 minutes to obtain Cr-Mn steel. The chemical composition of the steel is: carbon: 0.24% to 0.30%, silicon: 0.15% to 0.40%, manganese: 0.8% to 1.2%, Chromium: 0.9% ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Property
Measurement
Unit
thickness
aaaaa
aaaaa
elongation
aaaaa
aaaaa
yield ratio
aaaaa
aaaaa
Login to view more
Abstract
The invention provides a method for producing a casing pipe for a thickened oil thermal production well. The method includes the steps of steelmaking and continuous casting, pipe rolling and thermal treatment, wherein the steelmaking includes initial smelting of molten steel, deoxidization alloying and refining, and during initial smelting of the molten steel, carbon in the molten steel is not less than 0.06 wt%, phosphorus in the molten steel is not more than 0.003 wt%, and the tapping temperature is controlled within the range from 1620 DEG C to 1660 DEG C, therefore, Cr-Mn steel is obtained after continuous casting and comprises, by weight, 0.24%-0.30% of carbon, 0.15%-0.40% of silicon, 0.8%-1.2% of manganese, 0.9%-1.30% of chromium, not more than 0.30% of nickel, not more than 0.005% of phosphorus, not more than 0.005% of sulfur and the balance iron and inevitable impurities; the pipe rolling includes that the obtained steel is subjected to pipe rolling so as to obtain an expected pipe billet; and the thermal treatment includes quenching and tempering, the quenching heating temperature is controlled within the range from 870 DEG C to 890 DEG C, and the tempering heating temperature is controlled within the range from 530 DEG C to 540 DEG C, so that the casing pipe for the thickened oil thermal production well is obtained. The casing pipe produced by the method is excellent in yield strength, yield ratio, elongation coefficient, area reduction and the like.
Description
technical field [0001] The present invention generally relates to the technical field of casings for heavy oil thermal recovery wells, and more specifically, the present invention relates to a method for manufacturing casings for heavy oil thermal recovery wells. Background technique [0002] Heavy oil resources are extremely rich in the world, and its reserves far exceed the geological reserves of ordinary crude oil. According to the estimates of the US Department of Energy, the potential reserves of heavy oil in the world may be 6 times that of the proven ordinary crude oil reserves. There are also abundant heavy oil resources underground in my country. In recent years, the thermal recovery technology of heavy oil has developed rapidly, and heavy oil occupies a considerable proportion in the production composition. At present, with the deepening of the development of the petroleum industry, the exploitation of heavy oil has become one of the main measures for the stable a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.