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Fatigue test sample of alloy coating pumping rod / polish rod and preparation thereof

A technology for alloy coating and fatigue testing, which is applied in the preparation of test samples, measuring devices, instruments, etc., to save materials, save costs, and shorten production cycles.

Active Publication Date: 2010-09-22
ANTON OILFIELD SERVICES (GRP) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved in the present invention is to overcome the defect in the prior art that there is no specific fatigue test sample for alloy coated sucker rods / polished rods, and provide a fatigue test sample for alloy coated sucker rods / polished rods and Its preparation method, the fatigue test sample of the alloy coated sucker rod / polished rod of the present invention can better reflect the real fatigue performance of the sucker rod / polished rod

Method used

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  • Fatigue test sample of alloy coating pumping rod / polish rod and preparation thereof
  • Fatigue test sample of alloy coating pumping rod / polish rod and preparation thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The preparation of embodiment 1 sample

[0027] 1. Take a long original base material, which is 20CrMo sucker rod / polished rod base material with a diameter of 28.6mm, determine the number and length of fatigue samples according to the fatigue test requirements, and mark and divide the original base material , define the uncoated substrate area and the alloy coated substrate area, and ensure that the lengths of the two uncoated substrates at both ends are 100mm to 200mm, and the length of the alloy coated substrate in the center is 200mm to 400mm;

[0028] 2. Spray welding the nickel-based self-fluxing alloy coating on the alloy coating substrate area determined in the previous step by spray welding process to prepare the corresponding alloy coating;

[0029] 3. Cut according to the label before preparing the alloy coating, and then obtain multiple required fatigue test samples.

Embodiment 2

[0031] According to the steps described in Example 1, the alloy coated sucker rod / polished rod fatigue test sample of the present invention has been prepared by adopting 20CrMo sucker rod / polished rod base material and nickel-based self-fluxing alloy of 28.6mm diameter specification, such as figure 1 As shown, the test sample is a short rod 1 with a total length of 400mm. The short rod is composed of two sections of uncoated substrates 2, 3 and one section of alloy coated substrate 4. The two sections without The coating substrate is evenly distributed on both ends of the short rod, each with a length of 100mm; the alloy coating substrate is located in the center of the short rod, and the length is 200mm.

Embodiment 3

[0033] According to the steps described in Example 1, the alloy coated sucker rod / polished rod fatigue test sample of the present invention has been prepared by adopting 20CrMo sucker rod / polished rod base material and nickel-based self-fluxing alloy of 28.6mm diameter specification, such as figure 1 As shown, the test sample is a section of short rod 1 with a total length of 500 mm. The short rod is composed of two sections of uncoated substrates 2, 3 and one section of alloy coated substrate 4. The two sections without The coating base material is evenly distributed on both ends of the short rod, each with a length of 100 mm; the alloy coating base material is located in the center of the short rod, and the length is 300 mm.

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Abstract

The utility model relates to a fatigue test sample of the sucker rod / feed rod with an alloy coat and a preparation method of the fatigue test sample. The test sample is a section of the short rod which comprises two sections of the parent metal with no coat and one section of the parent metal with the alloy coat. The two sections of the parent metal with no coat are evenly distributed over two ends of the short rod and the section of the parent metal with the alloy coat is distributed over the center of the short rod. The preparation method comprises demarcation marking, alloy coat preparing and incising steps. The utility model avoids an abnormal break better due to directly holding the alloy coat and truly reflects the real fatigue performance of the sucker rod / feed rod with the alloy coat. The utility model can save materials and costs. The preparation method of the sample is also simple and can be easily controlled and operated.

Description

technical field [0001] The invention relates to a fatigue test sample of a sucker rod / polish rod and a preparation method thereof, in particular to a fatigue test sample of an alloy-coated sucker rod / polish rod and a preparation method thereof. Background technique [0002] Fatigue performance is an important performance of sucker rod and sucker polished rod. In the actual application of the oil field, the fracture of the sucker rod or the polished sucker rod is mostly caused by fatigue fracture. Therefore, it is very important to detect the fatigue performance of sucker rods and polished sucker rods. [0003] The existing fatigue test standards for sucker rods / polished rods mainly include the national standard GB / T3075-82 "Metal Axial Fatigue Test Method" and the industry standard SY / T5029-2006 "Sucker Rod" of the petroleum industry. Among them, the requirements for fatigue test specimens are clearly specified. GB / T3075-82 requires the sample to be prepared as a "dumbbel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28G01N3/00
Inventor 黄锦滨田斌吴振宁张庚娟
Owner ANTON OILFIELD SERVICES (GRP) LTD
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