Sidetracking petroleum case pipe for petroleum natural gas mining industry and production process thereof
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A technology of oil and natural gas and oil casing, which is applied in the field of oil and gas exploration industry side diamond oil casing and its production, which can solve problems such as economic loss, oil layer casing damage, and failure of normal production of oil and gas wells, so as to reduce drilling costs Effect
Active Publication Date: 2008-05-21
TIANJIN PIPE GROUP CORP
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[0002] Every year, there are a large number of oil and gas wells at home and abroad where the oil layer casing is damaged, resulting in the oil and gas wells not being able to produce normally, and new wells must be drilled, resulting in greater economic losses
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[0051] Take TP110V (φ95.25×5.512mm) as an example of the petroleum casing produced according to the above composition and method, its chemical composition and processing parameters are as follows:
[0052] The chemical composition and weight percent of the casing are: C 0.26%, Si 0.18%, Mn 1.05%, Cr 0.98%, Mo 0.18%, Ni 0.07%, Cu 0.11%, P 0.014%, S0.010%, and The amount is Fe.
[0053] Use molten iron and scrap steel as raw materials for steelmaking, melt it into molten steel in an electric arc furnace, and obtain the above chemical composition after refining outside the furnace and vacuum degassing, and continuously cast it into a round billet, and cast the cooled continuous casting billet in a ring heating furnace Internal heating, furnace temperature is 1285°C, heat centering temperature is 1210°C, hot piercing temperature is 1230°C, continuous rolling, sizing, cooling, sawing, straightening, flaw detection; heat treatment: water quenching at a temperature of 910°C Quenchin...
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Abstract
The present invention provides a side diamond oil casing for oil and gas exploitation industry, the chemical composition of the oil casing is: C=0.23~0.40, Si=0.15~0.50, Mn=0.60~1.60, P≤0.25, S≤ 0.15, Cr=0.40~1.60, Mo=0.10~0.40, Cu≤0.30, and the balance is Fe; a method for producing the side diamond oil casing for the oil and gas exploitation industry is also provided, the method includes the steps of: refining Steel raw material; steelmaking; heating the cooled continuous casting slab in an annular heating furnace, the furnace temperature is 1250-1290°C, the heat centering temperature is 1200-1220°C, the hot piercing temperature is 1220-1250°C, continuous rolling, Sizing, cooling, sawing, straightening, flaw detection; heat treatment, final flaw detection; joint thread processing. The effect of the present invention is that the sidetracking casing produced by the method can ensure the smooth insertion of the casing, leave enough space for the installation of sucker rods and pumps in subsequent oil production operations, and quickly restore normal oil and gas production, thereby greatly Reduce drilling costs.
Description
technical field [0001] The invention relates to a production method of an oil casing, in particular to a side diamond oil casing used in the oil and gas exploitation industry and a production method thereof. Background technique [0002] Every year, there are a large number of oil and gas wells at home and abroad where the oil layer casing is damaged, resulting in the oil and gas wells not being able to produce normally, and new wells must be drilled, resulting in greater economic losses. Some old wells cannot continue oil production operations due to long oil production time, regenerated casing corrosion and other damages. The sidetracking of the oil layer by the pipe will reduce the drilling cost exponentially, and the drilling cost will be easily recovered through oil recovery, which not only increases the recovery rate of crude oil but also increases the economic benefits of the oil field. Contents of the invention [0003] In order to solve the problems in the above-...
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