SY/T 5324-2013Pre-Stress Insulated Tubing (English PDF)

5.9 of Edition 1994);

--- Modified the test program for apparent thermal conductivity (see 6.2.2 of this

Edition; 6.2.2 of Edition 1994);

--- Modified the size requirements for drift diameter gauge (see 6.5 of this Edition;

6.3 of Edition 1994);

--- Modified the requirements for product mark (see 8.1 of this Edition; 8.1 of Edition

1994);

--- Added the health, safety, environmental control requirements (see Clause 9).

Please note that some contents of this document may involve patents. The issuing

authority of this document doesn't assume the responsibility to identify these patents.

This Standard was proposed by and under the jurisdiction of Technical Committee for

Standardization of Oil Tube Profession.

Drafting organizations of this Standard. Oil Production Research Institute of SINOPEC

Shengli Oilfield Company, Shengli Oilfield Fleet Petroleum Equipment Co., Ltd., and

China University of Petroleum (East China).

Chief drafting staffs of this Standard. Di Yong, Luan Zhiyong, Shen Jing, Zhao Yanru,

Xie Jiawei, Li Shulan, and Wang Jianmin.

Pre-Stress Insulated Tubing

3.1 Apparent thermal conductivity

The heat in the insulating layer of the pre-stress insulated tubing transferred in the

three modes of heat conduction, convection and radiation is regarded as the heat of

the "imaginary solid" with the same insulating thickness transferred in the purely heat

conduction mode;

4.1 Product level

The pre-stress insulated tubing can be divided into 5 levels according to the apparent

thermal coefficient for inner wall of the inner tube at 350°C; see Table 1.

4.3 Product code

Example. YG114×62D, which indicates the Level-D pre-stress insulated tubing with outer

diameter of outer tube 114.3mm, and inner diameter of inner tube 62.0mm.

5.1 Requirements for working conditions

The anti-repulsion, anti-extrusion and tensile load, etc. of the pre-stress insulated

tubing shall meet the working conditions with the temperature of heat injection carrier

5.5 Processing requirements

5.5.1 After treatment, the outer surface of inner tube and inner surface of outer tube

shall be exempt from the rust and dirt; all can see is metal color; weld after drying and

assembling.

5.6 Tensile load

For the tubular columns with different specifications, their tensile load at normal

temperature shall be determined by the well-descending depth; see Table 3.

Table 3 -- Requirements for Tensile Load with Different Well-Descending Depths

5.7 Insulating layer

Perform the vacuum treatment or backfill inert gas after vacuum pumping in between

the insulating layers of pre-stress insulated tubing; and use the hydrogen-absorbing

agent.

5.9 Product flatness

The product flatness shall meet the requirements of GB/T 19830.

6.1 Mechanical property inspection

6.2 Insulating property inspection

6.2.1 Inspection device

The measurement of insulating property of insulated tubing shall adopt steady-state

and heating method. The electric heating method is recommended. The inspection

device shall have the self-control function against the temperature and heating power;

in order to guarantee the measurement accuracy, it can be equipped with automatic

acquiring and processing microcomputer.

6.2.2 Inspection procedures

6.3 Weld seam inspection

The two ends and the weld seam of suction hole shall be performed non-destructive

inspection; meet the requirements of GB/T 3323; no less than Class-II is qualified.

6.4 Thread inspection

The product connecting thread shall use the corresponding thread gauge to inspect.

6.5 Drift diameter inspection

The product shall use the corresponding drift diameter gauge to drift diameter. The

size of drift diameter gauge can refer to Table 4.

7.1 Acceptance inspection

7.1.1 The product insulating property, and weld seam shall be carried out 100%

inspection.

7.2 Type inspection

7.2.1 In case one of the following conditions, do the type inspection.

7.2.3 If there are disqualified items in the type inspection, then double the number of

sampling to perform re-inspection; if there are still disqualified items, then such batch

of products are judged disqualified.

8.1 Mark

8.1.1 The manufacturer code, product specification, material and production date

shall be marked by steel seal in the range about 800mm from the coupling to the

product.

8.2 Package

8.2.1 The outer surface of the product shall be de-rusted and decontaminated; coat

the anticorrosive paint; the connecting thread shall be equipped with thread protector.

8.2.2 The product shall adopt 4-point uniform support; place thick partitions between

layers; use steel strip to band firmly; indicate the lifting positions.

8.3 Transportation

8.4 Storage

8.4.1 The product shall be stored on the pipe bridge that is 4-point evenly supported

and at a distance of 0.5m from the ground.

9.1 The production and inspection of pre-stress insulated tubing shall be performed

as per the safety operation procedures.

9.2 During the using process, the pre-stress insulating tubing shall have health,

safety, environmental control requirements, and emergency plan.

9.4 The indoor inspection shall be operated by the professionals; during the indoor

inspection period; take the personal protection, and wear the labor protection

appliances.

Appendix A

(Informative)

Calculation of Apparent Thermal Conductivity

A.1 Principle formula can refer to Formula (A.1).

A.2 Test formula can refer to Formula (A.2).

A.3 Approximate formula can refer to Formula (A.3).

A.4 Regression formula can refer to Formula (A.4).

SY/T 5324-2013

SY

NATIONAL OIL-GAS INDUSTRY STANDARD

ICS 75.180.10

E 92

Record No.. 43183-2014

Replacing SY/T 5324-1994

Pre-Stress Insulated Tubing

Issued on. NOVEMBER 28, 2013

Implemented on. APRIL 01, 2014

Issued by. National Energy Administration

Table of Contents

Foreword... 4

4.1 Product level... 6

4.2 Product structural dimension... 6

4.3 Product code... 7

5.1 Requirements for working conditions... 7

5.2 Product insulating performance level... 8

5.3 Material requirements... 8

5.4 Prestressed process requirements... 8

5.5 Processing requirements... 8

5.6 Tensile load... 9

5.7 Insulating layer... 9

5.8 Service life of pre-stress insulated tubing... 9

5.9 Product flatness... 9

6.1 Mechanical property inspection... 9

6.2 Insulating property inspection... 10

6.3 Weld seam inspection... 10

6.4 Thread inspection... 10

6.5 Drift diameter inspection... 10

7.1 Acceptance inspection... 11

7.2 Type inspection... 11

8.1 Mark... 12

8.2 Package... 12

8.3 Transportation... 12

8.4 Storage... 12

5.9 of Edition 1994);

--- Modified the test program for apparent thermal conductivity (see 6.2.2 of this

Edition; 6.2.2 of Edition 1994);

--- Modified the size requirements for drift diameter gauge (see 6.5 of this Edition;

6.3 of Edition 1994);

--- Modified the requirements for product mark (see 8.1 of this Edition; 8.1 of Edition

1994);

--- Added the health, safety, environmental control requirements (see Clause 9).

Please note that some contents of this document may involve patents. The issuing

authority of this document doesn't assume the responsibility to identify these patents.

This Standard was proposed by and under the jurisdiction of Technical Committee for

Standardization of Oil Tube Profession.

Drafting organizations of this Standard. Oil Production Research Institute of SINOPEC

Shengli Oilfield Company, Shengli Oilfield Fleet Petroleum Equipment Co., Ltd., and

China University of Petroleum (East China).

Chief drafting staffs of this Standard. Di Yong, Luan Zhiyong, Shen Jing, Zhao Yanru,

Xie Jiawei, Li Shulan, and Wang Jianmin.

Pre-Stress Insulated Tubing

3.1 Apparent thermal conductivity

The heat in the insulating layer of the pre-stress insulated tubing transferred in the

three modes of heat conduction, convection and radiation is regarded as the heat of

the "imaginary solid" with the same insulating thickness transferred in the purely heat

conduction mode;

4.1 Product level

The pre-stress insulated tubing can be divided into 5 levels according to the apparent

thermal coefficient for inner wall of the inner tube at 350°C; see Table 1.

4.3 Product code

Example. YG114×62D, which indicates the Level-D pre-stress insulated tubing with outer

diameter of outer tube 114.3mm, and inner diameter of inner tube 62.0mm.

5.1 Requirements for working conditions

The anti-repulsion, anti-extrusion and tensile load, etc. of the pre-stress insulated

tubing shall meet the working conditions with the temperature of heat injection carrier

5.5 Processing requirements

5.5.1 After treatment, the outer surface of inner tube and inner surface of outer tube

shall be exempt from the rust and dirt; all can see is metal color; weld after drying and

assembling.

5.6 Tensile load

For the tubular columns with different specifications, their tensile load at normal

temperature shall be determined by the well-descending depth; see Table 3.

Table 3 -- Requirements for Tensile Load with Different Well-Descending Depths

5.7 Insulating layer

Perform the vacuum treatment or backfill inert gas after vacuum pumping in between

the insulating layers of pre-stress insulated tubing; and use the hydrogen-absorbing

agent.

5.9 Product flatness

The product flatness shall meet the requirements of GB/T 19830.

6.1 Mechanical property inspection

6.2 Insulating property inspection

6.2.1 Inspection device

The measurement of insulating property of insulated tubing shall adopt steady-state

and heating method. The electric heating method is recommended. The inspection

device shall have the self-control function against the temperature and heating power;

in order to guarantee the measurement accuracy, it can be equipped with automatic

acquiring and processing microcomputer.

6.2.2 Inspection procedures

6.3 Weld seam inspection

The two ends and the weld seam of suction hole shall be performed non-destructive

inspection; meet the requirements of GB/T 3323; no less than Class-II is qualified.

6.4 Thread inspection

The product connecting thread shall use the corresponding thread gauge to inspect.

6.5 Drift diameter inspection

The product shall use the corresponding drift diameter gauge to drift diameter. The

size of drift diameter gauge can refer to Table 4.

7.1 Acceptance inspection

7.1.1 The product insulating property, and weld seam shall be carried out 100%

inspection.

7.2 Type inspection

7.2.1 In case one of the following conditions, do the type inspection.

7.2.3 If there are disqualified items in the type inspection, then double the number of

sampling to perform re-inspection; if there are still disqualified items, then such batch

of products are judged disqualified.

8.1 Mark

8.1.1 The manufacturer code, product specification, material and production date

shall be marked by steel seal in the range about 800mm from the coupling to the

product.

8.2 Package

8.2.1 The outer surface of the product shall be de-rusted and decontaminated; coat

the anticorrosive paint; the connecting thread shall be equipped with thread protector.

8.2.2 The product shall adopt 4-point uniform support; place thick partitions between

layers; use steel strip to band firmly; indicate the lifting positions.

8.3 Transportation

8.4 Storage

8.4.1 The product shall be stored on the pipe bridge that is 4-point evenly supported

and at a distance of 0.5m from the ground.

9.1 The production and inspection of pre-stress insulated tubing shall be performed

as per the safety operation procedures.

9.2 During the using process, the pre-stress insulating tubing shall have health,

safety, environmental control requirements, and emergency plan.

9.4 The indoor inspection shall be operated by the professionals; during the indoor

inspection period; take the personal protection, and wear the labor protection

appliances.

Appendix A

(Informative)

Calculation of Apparent Thermal Conductivity

A.1 Principle formula can refer to Formula (A.1).

A.2 Test formula can refer to Formula (A.2).

A.3 Approximate formula can refer to Formula (A.3).

A.4 Regression formula can refer to Formula (A.4).

......