SY/T 5437-2000 Basic technical requirements for sealing fluids for drilling coringSY/T5437-2000 standard download decompression password: www.bzxz.net

ICS 75. 080
Registration number: 8147-2001
Petroleum and natural gas industry standard of the People's Republic of China SY/T 5437-2000
Basic technical requirement of sealing fluid for coringoperation during drilling
Published on December 12, 2000
State Administration of Petroleum and Chemical Industry
Implemented in June 2001~01
SY/T 5437-2000
1 Scope
2 Reference standards
3 Definition
4 Technical requirements
5 Test methods
Scope of application
Inspection rules
Transportation, storage
SY/T5437-2000
This standard is a revision of SY5437-92 (Basic technical requirements for sealing fluids for drilling coring). The main differences between this standard and SY5437.--92 are as follows: 1) This standard will S 1) Delete Chapter 3 and Chapter 4 of Y5437-92 and delete all referenced standards in Chapter 2, add Chapter 3 "Definition" and Chapter 4 "Technical Requirements" and new application standards in Chapter 2; 2) This standard modifies Chapter 5 "Performance Indicators and Applicable Range of Sealing Fluids" and Chapter 6 "Methods for Determining Performance of Sealing Fluids" in SY5437-92 into Chapter 5 "Test Methods", including two contents of instruments and equipment and test procedures, and Chapter 6 "Applicable Range" is a separate chapter; 3) This standard adds Chapter 7 "Inspection Rules". This standard will replace SY5437-92 from the date of entry into force. This standard is proposed by China National Petroleum Corporation. This standard is under the jurisdiction of the Petroleum Drilling Engineering Professional Standardization Committee. Drafting unit of this standard: Drilling Technology Research Institute of Shengli Petroleum Administration Bureau. Main authors of this standard: Ma Zhuqing, Xue Yuzhi, Qiao Jun, Wang Junyi. This standard was first issued in April 1992, and this is the first revision. W
1 Scope
Petroleum and Natural Gas Industry Standard of the People's Republic of China Basic Technical Requirements for Sealing Fluids for Coring Operation during Drilling
SY/T 5437—2000
Replaces SY 5437—92
Basic technical requirement of sealing fluid for coring operation during drilling This standard specifies the technical requirements, test methods, scope of application, inspection rules, transportation, storage, etc. of water-based sealing fluids and oil-based sealing fluids for coring operation during drilling.
This standard applies to sealing fluids for coring operation during oil exploration and development. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard by being referenced in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 6680-1986
GB/I ​​8170—1987
3 Definitions
This standard adopts the following definitions.
General rules for sampling of liquid chemical products
Rules for rounding off values
3.1 Oil-based sealing fluid UIL-BASE ALIGN LUID A sealing fluid using organic matter as a dispersion medium is called an oil-based sealing fluid. 3.2 Water-based sealing fluid WATCR-BASE Scaling Fluid A sealing fluid using water as a dispersion medium is called a water-based sealing fluid: Technical requirements
Oil-based sealing fluids and water-based sealing fluids shall comply with the technical requirements specified in Table 1 and Table 2, respectively. Table 1 Technical requirements for oil-based sealing liquids
Drawing length
Drawing length
Before high temperature (25℃+3℃)
Yellow-brown viscous liquid with uniform solid phase
After high temperature (135℃±5, curing for 12h)
Measured at 25t+3℃
Yellow-brown viscous liquid with uniform solid phase
≥650 (measured at 135±5T)
Table 2 Technical requirements for water-based sealing liquids
Before high temperature (25℃±3℃)
White or yellow-brown viscous liquid with uniform solid phase 10
National Petroleum and Chemical Industry Bureau 2HH-12-25 approved standard
After high temperature (105℃=5C, curing for 12h)
At 25t ±3t measurement
White or yellow-brown viscous liquid with uniform solid phase>0
750 (measured at 105±5T)
200[ -06 -01 Implementation
5 Test method
5.1 Instruments and equipment
SY/T5437-—2000
a) GH-Ⅲ roller heating furnace or equivalent products; b) NDJ-1 rotational viscometer or equivalent products; c) HAAKERV20 rotational viscometer or equivalent products; d) Electric constant temperature water bath, temperature control sensitivity ±1℃C; e) Thermometer: 0~100℃;
f) 100cm ruler, 0.1mm.
5.2 Test procedure
5.2.1 Sampling methodwww.bzxz.net
The sampling method shall be in accordance with the provisions of Chapter 4 of GB/T6680-1986. 5.2.2 Determination of performance of sealing liquid before high temperature
5.2.2.1 Appearance
After the sealing liquid is sampled in accordance with GB/T6680, immediately take two samples, each of 600-800 ml, and place them in a dry, clean, colorless beaker. When the temperature of the sealing liquid is 25℃±3℃ (if the temperature of the sealing liquid is lower than 25℃±3℃, place it in a constant temperature water bath and heat it with a clean glass rod during the heating process to make it evenly heated to 25℃±3℃; if the temperature of the sealing liquid is higher than 25℃±3℃, stir it manually with a clean glass rod to cool it to 25℃±3℃), immediately stir it with a dry, clean glass rod while observing and recording. After the determination, the sample shall be kept intact for the test in 5.2.2.2. 5.2.2.2 Determination of the length of the wire drawing
Use the sample kept in 5.2.2.1, and when the temperature of the sealing liquid is 25℃±3℃ and there is no wind, use a dry, clean glass rod with a diameter of 4~6mm or a metal rod with a smooth and unbent surface to pick up the sealing liquid: one end of the glass rod is inserted into the sealing liquid for 3cm, and the angle with the liquid surface is about 45°, the wire drawing speed is 40~50cm/s, and the wire drawing is done in a vertical direction. The straight-line distance from the liquid surface to the wire breakpoint is the wire drawing length, and the average value of the length measured twice is taken, and the numerical value is rounded off according to the provisions of GB/T8170. After the determination, the sample shall be kept intact for the following test.
5.2.2.3 Determination of viscosity
Take two samples from the samples stored in 5.2.2.2 (the remaining samples are kept intact for use in the experiment in 5.2.3.3, the oil-based sealing liquid is A; the water-based sealing liquid is B), 300~350ml each, and put them into two dry, clean 400ml beakers respectively. If the temperature of the sealing liquid is lower than 25℃±3℃, heat it in a constant temperature water bath, and stir it manually with a clean glass rod during the heating process to heat it evenly to 25℃±3℃; if the temperature of the sealing liquid is higher than 25℃±3℃, stir it manually with a clean glass rod to cool it to 25℃±3℃: immediately measure it with NDJ-1 type rotational viscometer or similar products according to the instrument manual, and take the average value of the viscosity measured twice, and the value is rounded off according to the provisions of GB/T8170. After the measurement, keep the sample intact for the test in 5.2.3.1. 5.2.3 Performance determination of sealing liquid after high temperature
5.2.3.1 Appearance
Take two samples from the samples stored in 5.2.2.3, each with 250-300 ml, and seal them into two dry and clean aging cans respectively, and then put them into a roller heating furnace. The oil-based sealing liquid is rolled and aged at a constant temperature of 135℃±5℃ for 12 hours (the water-based sealing liquid is rolled and aged at a constant temperature of 105℃±5℃ for 12 hours), and then taken out and cooled and placed in a dry and clean 300ml colorless beaker. When the sealing liquid temperature is 25℃±3℃, use a dry and clean glass rod to stir while observing and recording. After the determination, keep the sample intact for the test in 5.2.3.2. 5.2.3.2 Determination of the length of the thread
Use the sample preserved in 5.2.3.1 to determine the length of the thread, the determination method is the same as 5.2.2.2. 5.2.3.3 Determination of viscosity
a) Determination of the viscosity of the oil-based sealing liquid at a constant temperature of 135℃±5℃ for 12h. Take 5.2.2.Sample A stored in 3 is continuously measured with HAAKERV20 rotational viscometer or similar products at a constant temperature of 135℃±5℃ for 12h (the number of measurement points per hour shall not be less than 6 points). The measurement conditions of HAAKERV20 rotational viscometer are: use M5 system, D100/300 rotor, shear rate of 20s-1, and the rest is carried out according to the instrument manual. The numerical rounding is carried out according to the provisions of GB/T8170.
b) Determination of viscosity of water-based sealing liquid at a constant temperature of 105℃±5℃ for 12h Take sample B stored in 5.2.2.3 and continuously measure the viscosity of water-based sealing liquid at a constant temperature of 105℃±5℃ for 12h with HAAKERV20 rotational viscometer or similar products (the number of measurement points per hour shall not be less than 6 points). The measurement conditions of HAAKERV20 rotary viscometer are the same as those in 5.2.3.3 a).
6 Scope of application
6.1 Oil-based sealing fluid is applicable to closed coring well sections with a temperature of less than 135°C. 6.2 Water-based sealing fluid is applicable to closed coring well sections with a temperature of less than 105°C. 7 Inspection rules
7.1 Randomly sample 10% of the total number of products in each batch, and each sample shall not be less than 200g. After mixing the obtained samples evenly, they shall be placed in dry, clean and threaded sample bottles as specimens, and labeled with the manufacturer's name, product name, model, batch number, sampling date and sampler, and inspected by the quality inspection department. 7.2 The user unit has the right to accept products in accordance with this standard. If it is found that the product does not meet the requirements of this standard, it should be reported to the manufacturer within 15 days after arrival. The supply and demand parties shall randomly select 20% of the total number of supplied products for re-inspection, and the re-inspection results shall prevail after re-inspection. 8 Transportation and storage
8.1 Transportation
Sealing fluids should be transported without mixing with sharp objects, and should be handled with care to prevent damage and leakage. 8.2 Storage
The storage period of oil-based sealing fluids is 90 days, and the storage site should be more than 5 meters away from the fire source; water-based sealing fluids should be stored in a cool place, away from direct sunlight, and the storage period is 60 days.
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