This standard applies to the types and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of milling shoes and grinding shoes. This standard applies to milling shoes and grinding shoes for oil and gas field well repair SY 5285-1991 Milling shoes and grinding shoes for well repair SY5285-1991 Standard download decompression password: www.bzxz.net

Petroleum and Natural Gas Industry Standard of the People's Republic of China SY5285-91
Milling Shoes and Milling Shoes for Well Repair
Published on July 19, 1991
Ministry of Energy of the People's Republic of China
Implemented on December 1, 1991
Untitled Content and Scope of Application
Petroleum and Natural Gas Industry Standard of the People's Republic of China Milling Shoes and Milling Shoes for Well Repair
SY 5285--9t
This standard specifies the types and basic parameters, technical requirements, test methods, inspection rules, marking, packaging and storage of milling shoes and milling shoes.
This standard is applicable to milling and milling shoes used for well repair in oil and gas fields. Reference standards
SY5290
GB 9253. 1
GB5616
SY5309
3 Types and basic parameters
Petroleum drill cup joint
Petroleum drill pipe joint thread
Metal tensile test method
Metal Charpy impact test
Application guide for normal temperature non-destructive testing
General technical conditions for packaging of petroleum drilling machinery products Type
Milling shoes are divided into cone type and concave type according to the shape of their teeth (the structure of milling shoes is shown in Figures 1 and 2). 3.1.1
Grinding shoes are divided into flat bottom type and concave bottom type according to the shape of their teeth (the structure of grinding shoes is shown in Figures 3 and 4). 3.1.2
The type codes of milling shoes and grinding shoes shall comply with the provisions of Table 1. Table 1
Product name
Approval number of the Ministry of Energy of the People's Republic of China on 1991-07-19
Type code
Implementation on 1991-12-01
SY5285-91
Figure 1 Conical milling shoe
1-Carbonized hook material: 2-Main body, 3-Rightening block Figure 2 Form milling shoe
1-Disc tungsten material: 2-Main body; 3-Rightening block 32 Model
3.2.1 The model of the milling shoe is as follows
The model of the grinding shoe is as follows:
SY 5285--91
Figure 3 Flat-bottomed milling shoe
1-Tungsten carbide material, 2-body
Figure 4 Concave-bottomed milling shoe
1-Carbide quail material: 2-body
Maximum diameter, mm
\cone\ Chinese phonetic first letter (the first Chinese phonetic first letter of the word "\") "milling" Chinese phonetic first letter
SY 5285--91
Maximum diameter, mm
*Ping Chinese phonetic first letter (the first Chinese phonetic first letter of "concave") "milling" Chinese phonetic first letter
Model representation example, the maximum diameter of the conical milling shoe is 92mm, its model is Xz92, the maximum diameter of the flat-bottomed milling shoe is 92mm, its model is MP92.
3.3 Basic parameters
The basic parameters of the milling shoe shall comply with the provisions of Table 2. The basic parameters of the grinding shoe shall comply with the provisions of Table 3. 3.3.2
Note: the number of water holes is 1.
Maximum diameter
Basic parameters of shoes
Joint thread code
NC26(2IF)
NC31(2—IF)
NC38(3.1 IF)
NC38(81IF)
Thickness of cladding alloy
Water hole diameter
Note: the number of water holes is 2.
4 Technical requirements
$y 5285-91
Maximum diameter
Basic parameters of grinding shoes
Thread code of joint
NC26(281F)
NC31(271F)
NC38(3IF）
NC38(3IF)
Thickness of cladding alloy
4.1 The product shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 4.2 The mechanical properties of the body material shall comply with the provisions of Table 4. mm
Water hole diameter
Maximum body diameter
90~100
102156
Tensile strength
SY 5285--91
Yield point
Elongation
Sectional reduction
4.3The dimensions and tolerances of the drill pipe joint thread shall comply with the provisions of SY5290 and GB9253.1. 4.4The body shall be subjected to non-destructive testing and shall not have cracks or other defects that affect strength. Punch value
4.5The working parts of the product shall be clad with tungsten carbide wear-resistant materials with a hardness of HRA89~91. The tungsten carbide particle size for milling shoes is 2~3mm and 3~5mm. The tungsten carbide particle size for grinding shoes is 3~5mm and 6.5~~8mm. 4.6The cladding wear-resistant material must be firm and the particles must be evenly distributed. 4.7According to the specified conditions, the life of the milling shoe shall not be less than 4h, and the total footage of the grinding shoe shall not be less than 6m. 4.8The thread of the joint shall be coated with thread grease and protected with thread guard. 5 Test methods and inspection rules
5.1 Test methods
5.1.1 The mechanical properties of the base material shall be tested in accordance with the provisions of GB228 and GB229. 5.1.2 The threads of the drill pipe joints shall be inspected in accordance with the provisions of SY5290 and GB9253.1. 5.1.3 The methods and requirements for flaw detection shall be in accordance with the provisions of GR5616. 5.1.4 The particle size and particle distribution uniformity of the cladding wear-resistant material shall be inspected by visual method. The life test of milling shoes and grinding shoes shall be carried out in the following steps: 5.1.54
a. The life test shall be carried out on a simulation test bench, b. The test parameters shall comply with the provisions of Table 5.
Product name
Drilling pressure, KN
10～20
Rate, r/min
Feeding length, m/h
c, Φ73mm, steel grade J55 Shantou pipe is selected as the milling and grinding object. Fix the selected oil pipe on the simulation test bench, then connect the milling machine or grinder to the drill pipe of the test bench, and then mill and grind according to the drilling pressure and speed specified in Table 5. After the test, check that its life and total footage should comply with the provisions of Article 4.7. 5.2 Inspection rules
The product must be inspected and qualified by the inspection department of the manufacturer and issued with a certificate of conformity before it can leave the factory. 5.2.1 Factory inspection
Before the product leaves the factory, 5 pieces shall be selected for every 100 pieces, and 1 piece shall be selected for less than 20 pieces. The cladding quality inspection shall be carried out according to Article 5 and 1.4. If one piece fails, the sampling shall be doubled. If there is still one piece that fails, it shall be inspected piece by piece. 5.2.2 Type inspection
SY 5285-91
In any of the following situations, one piece of product shall be selected for type inspection: a: New product or major change in structure:
b. Major change in product material and process! c. The cumulative production batch reaches 200 pieces.
5.2.3 Type test items The sharp shoe is the life test, and the grinding shoe is the total footage test. The test method shall be carried out according to Article 61.5. 6 Marking, packaging, storage
6.1 The product shall be marked in the marking bottle as follows: a: Product model and joint thread code,
b. Manufacturer's name or trademark
c. Product number and year and month of manufacture.
6.2 Products shall be packaged in accordance with the provisions of SY5309. 6.3 Product factory technical documents include:
a. Product certificate:
b. Instruction manual
c. Packing list.
6.4 Products shall be packed in boxes and marked as follows on the outside of the boxes: a. Name and address of the consignee:
b. Name and address of the manufacturer,
c. Product model, name and quantity,
d. Box size (length × width × height), mme. Gross weight or net weight, kg
f. Year and month of manufacture.
6.5 Products shall be stored in a clean, dry and ventilated warehouse. It is strictly forbidden to drop, bump, squeeze, press or contact with corrosive substances such as acid, alkali and salt.
Quality guarantee period
If the user complies with the provisions of the product manual, within 12 months from the date of product delivery, if the normal use of the grinding shoes and grinding shoes is affected by manufacturing quality problems, the manufacturer shall repair or replace them free of charge. Additional remarks:wwW.bzxz.Net
This standard is proposed and managed by the National Technical Committee for Standardization of Petroleum Drilling Equipment and Tools. This standard was jointly drafted by Tonghua Petroleum Tools Research Institute and the Mechanical Institute of Petroleum Exploration and Development Research Institute. The main drafters of this standard are Yu Limei, Xia Yunzhi and Zhang Boyi. 7
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