Some standard content:
ICS 75.200
Registration No.: 1106—1998
Petroleum and Natural Gas Industry Standard of the People's Republic of ChinaSY/T0515—1997
Specification for oil and gas separators1997-12-28 Issued
China National Petroleum Corporation
1998-06-01 Implementation
SY/T 0515-1997
.1 Scope
2 Reference standards
3 Definition
4 Design
5 Manufacturing, inspection and acceptance
6 Separator model
Appendix A (Standard Appendix)
Appendix B (Standard Appendix)
Appendix C (Suggestive Appendix)
Separator design information
Separator size calculation
Anti-corrosion guide
SY/T0515-1997
This standard is based on the summary of domestic design and use of oil and gas separators, and refers to the relevant contents of APISpcc12I "Oil and Gas Separator Specification" 1989 7th edition, and revise SY7515-89 "Oil and Gas Separator Specification". Appendices A and B of this standard are both standard appendices; Appendix C of this standard is a suggestive appendix. This standard shall replace SY7515-89 from the date of entry into force. This standard was proposed by the Planning and Design Institute of China National Petroleum Corporation. The unit of this standard is Daqing Oilfield Construction Design Institute. The main drafter of this standard is Sun Qingcai Yanming. The first release date of this standard is March 31, 1989. This standard is entrusted to Daqing Oilfield Construction Design Institute for interpretation. V
1 Scope
Petroleum and Natural Gas Industry Standard of the People's Republic of China Specification for Oil and Gas Separators
Specification for oil and gas separators This standard specifies the requirements for the design, manufacture, inspection and acceptance of oil and gas and moist air and water separators. This standard is applicable to gravity oil and gas water separators for oil fields. 2 Referenced Standards
SY/ T 05151997
Replaces SY 7515~89
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest version of the following standards. GB150-1998 Steel pressure vessels
SYI4-84 Oilfield oil and gas gathering and transportation design specification SY/T0599-1997 Natural gas surface facilities sulfide stress cracking resistance metal material requirements SY/T0534-94 Separator gas with liquid test method near-sampling collection method SY/T0448-97 Oilfield oil and gas processing steel pressure vessel construction and acceptance specification pressure vessel safety technical supervision and processing regulations Lao Guozi (8), 19903 Definitions
This standard adopts the following definitions.
3.1 Oil and gas separator
The equipment that separates the gas, liquid or oil, gas and water in the mixture of oil and gas is called an oil and gas separator. Hereinafter referred to as separator.
3.2 Droplet Settling Limit
In the separator process design, the settling separation design is carried out according to a certain diameter droplet, and the lower limit of the droplet diameter is called the droplet settling limit. Usually 100μm is taken.
3.3 Droplet Capture Limit
In the separator process design, the demister is designed according to a certain diameter droplet, and the droplet diameter size is called the droplet capture limit. Usually 10um is taken.
4 Design
4.1 Type, specification and design pressure range
4.1.1 The outer structure of the separator can be horizontal, vertical (see Figure 1) or spherical. Its specifications and design pressure ranges are shown in Table 1: Table 2 and Table 3.
4.1.2 The ratio of the minimum length (or minimum height) of the separator to the nominal straightness is 3.0. When lengthening or heightening, it is advisable to design it in multiples of 800m1m1 based on this number (except for the dimensions given in Table 1 and Table 2). 4.2 Structural composition of separator
4.2.1 The separator is generally composed of the primary separation zone (I), gas phase zone (II), liquid phase zone (III), demisting zone (IV), and oil collection zone (V), as shown in Figure 2.
China National Petroleum Corporation approved 1998-0G-01 implementation on December 28, 1997
Figure 1 Separator
Table 1 Specifications and design pressure of horizontal separator
Length (L)
Nominal volume (V)
Design pressure range
0.1～ 16
Nominal diameter (DN)
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Table 1 (end)
Nominal volume (V)
Length (L)
Design pressure range
0.1 ~ 4.0
0. 1 ~ 2.5
Nominal diameter (DN)
SY/ T 0515-1997
Table 2 Specifications and design pressure of vertical separator Nominal volume (V)
Height (H)
Design pressure range
0.1 ~ 6,4
0.1~~ 4.0
0.1～4.0
Ball diameter
SY/ 0515-1997
Table 3 Specifications and design pressure of spherical separators
a) Vertical two-phase separation group
b) Horizontal two-phase separation high gas
c) Horizontal two-phase separation high gas
Figure 2 Separator composition
Constant surface
Production of Tibetan grass
Design pressure range
0.1～4.0
SY/ T 05151997
4.2.2 The function of the primary separation zone (1) is to separate the gas-liquid mixture and obtain liquid phase flow and gas phase flow: this zone is usually equipped with inlet guide elements and buffer elements to reduce the oil and gas flow rate, disperse the gas flow, store less oil and gas, and create conditions for the next section separation. 4.2.3 The function of the gas phase zone (Ⅱ) is to separate the relatively large droplets carried in the gas phase flow by gravity sedimentation. In order to improve the droplet separation effect, a rectifying element is usually set in the gas phase zone. 4.2.4 The function of the liquid phase zone (Ⅱ) is to mainly separate the free gas carried in the liquid phase flow in the two-phase separator. In order to obtain a better separation effect, the design of the liquid phase zone must ensure that the liquid has sufficient residence time. In the three-phase separator: in addition to separating the free gas, the liquid phase zone also has the function of separating it from the free water. In order to improve the oil-water separation effect, a coalescing element is usually installed in the liquid phase zone. 4.2.5 The function of the demisting zone (IV) is to further separate the droplets carried in the gas phase flow. This zone is equipped with a demisting element and uses the collision separation principle to capture the droplets in the gas flow.
4.2.6 The function of the oil collecting zone (V) is to store a part of the oil: to maintain a stable production liquid level. 4.3 Process design
4.3.1 The separator shall be designed in accordance with the requirements of the design data. The design data is shown in Appendix A (Appendix of the standard). 4.3.2 For the design of the demister, the droplet collection limit is generally 10um. The liquid removal efficiency of the separator designed according to this collection limit shall not be less than 98.5%.
4.3.3 See Appendix B (Appendix of the standard) for the calculation of separator dimensions. 4.3.4 When it is necessary to test the gas-liquid volume of the separator: the test method shall comply with the provisions of SY/T0534. 4.4 Materials and strength
The material selection and strength design of the separator shall comply with the provisions of GB150 and be subject to the supervision of the "Regulations on Safety Technical Supervision of Pressure Vessels".
4.5 Control instruments and safety accessories
4.5.1 The separator shall have a positive force display.
4.5.2 The separator shall have a liquid level display, and a high and low liquid level monitoring and alarm system shall be set up if necessary. 4.5.3 For separators equipped with a liquid discharge pump, the separator oil outlet valve is installed on the outlet side of the liquid discharge pump. When calculating and selecting the separator oil outlet valve pressure difference, the pipe pressure difference must be taken into account. The separator pipeline pressure difference is not allowed. 4.5.4 The separator safety relief device should use a full-opening closed spring safety valve, and its specifications and dimensions are determined in accordance with GB150. In order to facilitate the inspection and replacement of the safety valve, a gate valve is installed between the safety valve and the shell. Its installation and use requirements meet the requirements of the "Regulations on Safety Technical Supervision of Pressure Vessels".
4.6 Technical connection pipes and openings
4.6.1 The distance between the separator discharge port and the lowest liquid level should be greater than 3 times the diameter of the discharge pipe and not less than 200mm4.6.2 The gas outlet of the separator should be set at the top of its shell. 4.6.3 The liquid outlet of the separator should be equipped with an anti-vortex plate. 4.6.4 The process pipe of the separator should be connected by flange. 4.6.5 Cast iron metal materials are not allowed to be used on the separator. 4.6.6 All pipes on the separator are not allowed to be welded steel pipes. 5 Manufacturing, inspection and acceptance
The manufacturing inspection and acceptance of the separator should avoid following the requirements of SY/T0448-97 and GB150, and be supervised by the "Regulations on Safety Technical Supervision of Pressure Vessels". The separator used in the sulfide stress corrosion environment should also meet the requirements of SY/T0599. 5.1 Manufacturing
5.1.1 The separator must be manufactured by a factory with the qualification of pressure vessel manufacturing. 5.1.2 The instruments, pipe fittings and other accessories of the separator itself should be assembled with the separator in the manufacturing room and shipped after being debugged and qualified.
SY/ T 0515--1997
5.1.3 The safety valve is matched with the manufacturer and shall be adjusted and set to pressure according to the design requirements before leaving the factory. 5.1.4 The separator shall have a product nameplate indicating the following: manufacturer's name;
-separator name and model;
Container category:
Design pressure and temperature;
Maximum overall dimensions;
Equipment weight;
Product number and manufacturing year and month;
Other contents that the manufacturer deems necessary to indicate. 5.2 Inspection and acceptance
After welding and assembly on site, weld flaw detection inspection and separator overall water pressure test must be carried out, and acceptance shall be carried out after passing the inspection and test.
Accessories and instruments that are not shipped with the separator as a whole shall be assembled on site by the manufacturer or the unit representing the manufacturer, and acceptance shall be carried out after passing the commissioning inspection.
5.2.3 The user may make any necessary investigation according to this standard to ensure that the manufacturer complies with this standard, and may reject any product that does not comply with this standard. The manufacturer shall provide the user with convenient conditions for supervision. 5.2.4 If the separator product has harmful defects or the instrument fittings are incomplete during the manufacturer's or on-site testing and inspection, the user may reject it. After the user representative has accepted the separator, he shall sign the factory acceptance report. 6 Separator model
[The classification and code of separator type and function are shown in Table 4.6.1
Table 4. Classification and code
Model composition:
Structural design sequence (Arabic numerals)
Design pressure, MPa
Simplified length or height, m
Simplified nominal diameter, m
Phase separation
Note: A model can only represent one separator product. When any of the separator type, function, size, and structure changes, it is considered that the separator product has changed and a new separator model must be compiled. 6.3 Example:
Plastic number: WS3.0× 12.8—0.7／1:
SY/ T 0515-1997
indicates horizontal oil, gas, water three-phase separator, nominal diameter 3m, cylinder length 12.8m, design pressure 0.7MPa first structure design
model LE2.0×7.6—0.8/2:
indicates vertical gas, liquid two-phase separator, nominal diameter 2m, separator cylinder height 7.6m, design pressure 0.8MPa second structure design.
model Qs9.2—1.0/1:
indicates spherical oil, gas, water three-phase separator, nominal diameter 9,2m, design pressure 1.0MPa, first structure design. AI liquid medium data
Crude oil processing capacity
Crude oil density
Crude oil water tray
Water density
Crude oil foaming degree
SY/ T 05151997
Appendix A
(Standard Appendix)
Separation frame design data
m3/ d;
%(mass ratio);
kg/m';
(yes, no);
Dynamic viscosity of crude oil under operating conditions
Dynamic viscosity of water under operating conditions
H,S content in water
CO2 content in water
Oxygen content in water
Is there slug flow
Wax content in crude oil
Sand content in crude oil
Gas medium data
Gas processing capacity
Gas density under standard conditions
mg/ L;
mg / L;bzxZ.net
mg/ L;
Pa·s;
(yes, no);
%(mass ratio):
%(volume ratio).
Dynamic viscosity of gas under operating conditions
CO content in gas:
kg / m;
Pa* s;
% (volume ratio);
H, S content in gas
Design conditions
Operating temperature:
Operating pressure:
% (volume ratio).
Separator type: (vertical, horizontal, spherical)Separator function: (two-phase, three-phase)
Allowable water content of crude oil after separation
\) Oil content in water
Buffer time
mg / L;
Whether the amount of liquid in the gas after separation needs to be detected?
Whether the separator is equipped with a drainage pump
Control instrument type
% (mass ratio);
(mild, no)
(equipped, no);
(electric or pneumatic)
Indicates vertical, gas-liquid two-phase separator, nominal diameter 2m, separator cylinder height 7.6m, design pressure 0.8MPa second structural design.
Model Qs9.2—1.0/1:
Indicates spherical oil, gas, water three-phase separator, nominal diameter 9,2m, design pressure 1.0MPa, first structural design. AI liquid medium data
Crude oil processing capacity
Crude oil density
Crude oil water tray
Water density
Crude oil foaming degree
SY/ T 05151997
Appendix A
(Standard Appendix)
Separator frame design data
m3/ d;
%(mass ratio);
kg/m';
(yes, no);
Dynamic viscosity of crude oil under operating conditions
Dynamic viscosity of water under operating conditions
H,S content in water
CO2 content in water
Oxygen content in water
Is there slug flow
Wax content in crude oil
Sand content in crude oil
Gas medium data
Gas processing capacity
Gas density under standard conditions
mg/ L;
mg / L;
mg/ L;
Pa·s;
(yes, no);
%(mass ratio):
%(volume ratio).
Dynamic viscosity of gas under operating conditions
CO content in gas:
kg / m;
Pa* s;
% (volume ratio);
H, S content in gas
Design conditions
Operating temperature:
Operating pressure:
% (volume ratio).
Separator type: (vertical, horizontal, spherical)Separator function: (two-phase, three-phase)
Allowable water content of crude oil after separation
\) Oil content in water
Buffer time
mg / L;
Whether the amount of liquid in the gas after separation needs to be detected?
Whether the separator is equipped with a drainage pump
Control instrument type
% (mass ratio);
(mild, no)
(equipped, no);
(electric or pneumatic)
Indicates vertical, gas-liquid two-phase separator, nominal diameter 2m, separator cylinder height 7.6m, design pressure 0.8MPa second structural design.
Model Qs9.2—1.0/1:
Indicates spherical oil, gas, water three-phase separator, nominal diameter 9,2m, design pressure 1.0MPa, first structural design. AI liquid medium data
Crude oil processing capacity
Crude oil density
Crude oil water tray
Water density
Crude oil foaming degree
SY/ T 05151997
Appendix A
(Standard Appendix)
Separator frame design data
m3/ d;
%(mass ratio);
kg/m';
(yes, no);
Dynamic viscosity of crude oil under operating conditions
Dynamic viscosity of water under operating conditions
H,S content in water
CO2 content in water
Oxygen content in water
Is there slug flow
Wax content in crude oil
Sand content in crude oil
Gas medium data
Gas processing capacity
Gas density under standard conditions
mg/ L;
mg / L;
mg/ L;
Pa·s;
(yes, no);
%(mass ratio):
%(volume ratio).
Dynamic viscosity of gas under operating conditions
CO content in gas:
kg / m;
Pa* s;
% (volume ratio);
H, S content in gas
Design conditions
Operating temperature:
Operating pressure:
% (volume ratio).
Separator type: (vertical, horizontal, spherical)Separator function: (two-phase, three-phase)
Allowable water content of crude oil after separation
\) Oil content in water
Buffer time
mg / L;
Whether the amount of liquid in the gas after separation needs to be detected?
Whether the separator is equipped with a drainage pump
Control instrument type
% (mass ratio);
(mild, no)
(equipped, no);
(electric or pneumatic)
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