GB/T 16750.1-1997Electrical submersible pump units (English PDF)

4.1 Submersible electric pump unit

4.1.1 Type

Drive mode. motor drive.

Working style. continuous working system.

The schematic diagram of the conventional installation of the submersible electric pump unit is shown in Figure 1.

Description.

1---centralizer;

2---sleeve;

3---motor;

4---protector;

5---Inhalation and treatment device;

6--- cable shield;

7---pump;

8---pump outlet connector;

9---lead cable;

10---oil pipe;

11---single flow valve;

12---Drain valve;

13---Power cable;

14---ground cable;

15---wellhead device;

16--- junction box;

17---control cabinet;

18---Transformer.

Figure 1 Schematic diagram of the installation of submersible pump unit

4.1.2 Model representation method

QYDB ---/- -

Applicable well temperature code Rated head, m Rated displacement, m3/d Maximum axial projection size of the unit, mm Submersible electric pump code

Note 1. Refer to Appendix A for the calculation method of the maximum axial projection size of the submersible pump unit.

Note 2. The applicable well temperature of the submersible pump unit is divided into four grades.

The well temperature grade code is.

---90 ° C, denoted by A;

---120 ° C, denoted by B;

---150 ° C, denoted by C;

---180 ° C, denoted by D.

Example. rated displacement.200m3/d, rated head 1500m, suitable for well temperature 120 ° C, the maximum axial projection size of 152mm submersible pump is expressed as.

QYDB152-200/1500B.

4.1.3 Submersible electric pump series

The series of conventional submersible electric pumps should meet the requirements of Table 1.

Table 1 Common Submersible Electric Pump Series

Conventional submersible pump series Motor pump protector suction and treatment device Suitable for minimum casing Mm/(in-lb/ft) 95/98 86/88 86/88 86/88 phi127.00/(5-18) 107 95/98 95/98 95/98 phi139.70/(51/2-23) 114 98/101/102 98/101/102 98/101/102 phi139.70/(51/2-20) 116 98/101/102 98/101/102 98/101/102 phi139.70/(51/2-20) 138 130 130 130 phi168.28/(65/8-24) 143 130 130 130 phi177.80/(7-32) 185/188 172 172 172 phi244.48/(95/8-75)

Note 1. The numbers in the left, second, third, and fourth columns in the table are nominal outer diameters in millimeters.

Note 2. The series of unconventional submersible electric pumps are matched according to the agreement.

4.2 Motor

4.2.1 Type

Three-phase squirrel cage asynchronous motor.

4.2.2 Model representation method

YQY --- ---

Feature code. GX-high efficiency type; FF-anti-corrosion type; GZ-high load Location code. D-single section; S-upper section; T-universal section; X-lower section Power, kW Motor series Motor code Feature code. It is represented by letters. When there are multiple features coexisting, the corresponding multiple feature codes can be used, and the feature code is left oblique.

Separated by bars.

Example. The 114 series upper section and the anti-corrosion type high load bearing motor with a power of 45kW are shown as YQY114-45S-FF/GZ.

4.3 Protector

4.3.1 Type

Divided by structure.

a) precipitation type;

b) Capsule type.

4.3.2 Model representation method

QYH - -/---

Feature code. FF-anti-corrosion type; FS-sand-proof type; GZ-high load bearing; GW-high temperature Location code. S-upper section; X-lower section Structure. C-precipitation; J-capsule Protector series Protector code Feature code. It is represented by letters. When there are multiple features coexisting, the corresponding multiple feature codes can be used, and the feature code is left oblique.

Separated by bars.

Example. The 130 series capsule type anti-corrosion type high load upper protection device for submersible electric pump unit is expressed as. QYH130J/S-FF/GZ.

4.4 Inhalation and treatment device

4.4.1 Type

Divided by structure.

a) a separator;

b) the suction inlet;

c) Gas processor.

4.4.2 Model representation method

QYX - ---

Feature code.

HZ-with guard type; SJ-two-stage series; FS-sand type;

FF-anti-corrosion type; GX-high efficiency type; C-sedimentation type; X-rotary type Structure. F-separator; K-suction port; Q-gas processor Inhalation and treatment device series Inhalation and treatment device code Feature code. It is represented by letters. When there are multiple features coexisting, the corresponding multiple feature codes can be used, and the feature code is left oblique.

Separated by bars.

Example. The 98 series rotary sand control type separator for submersible electric pump unit is expressed as. QYX98F-X/FS.

4.5 Pump

4.5.1 Model representation method

QYB ---/- ---

Feature code.

FS-anti-corrosion type; FF-anti-corrosion type; XJ-inclined well;

FG-anti-scaling type; CY- heavy oil Location code. S-upper section; T-universal section; X-lower section Rated head, m Rated displacement, m3/d Pump series Pump code Feature code. It is represented by letters. When there are multiple features coexisting, the corresponding multiple feature codes can be used, and the feature code is left oblique.

Separated by bars.

Example. The 98 series sand-proof and anti-corrosion type upper pump with rated displacement of 250m3/d and rated head of 500m is expressed as. QYB98-250/500S-FS/FF.

4.5.2 Pump outlet connector selection

Pump outlet joints are available with different tubing sizes and internal threads according to user requirements.

4.6 Cable

4.6.1 Shape feature code

Shape feature code representation method.

a) round, indicated by Y;

b) Flat, omitted.

4.6.2 Insulation material code

Insulation material code representation method.

a) polypropylene (including modified polypropylene), denoted by P;

b) Ethylene-propylene rubber, denoted by E;

c) cross-linked polyethylene, denoted by YJ;

d) Polyimide-F46 composite film/ethylene propylene rubber combined insulation, denoted by YE;

e) Polyimide-F46 composite film/polyfluoroethylene propylene combination insulation, expressed in YF.

4.6.3 Sheath (including inner sheath) material code

The sheath material code representation method.

a) lead (lead alloy), denoted by Q;

b) Ethylene-propylene rubber, denoted by E;

c) chlorosulfonated polyethylene, denoted by H;

d) a nitrile-polyvinyl chloride complex, denoted by F;

e) Nitrile rubber, indicated by N.

4.6.4 Armored cover code

Armored sheath code representation.

a) Monel steel belt armor, using M (different specifications of Monel steel belt can be used M1, M2, Mn respectively);

b) galvanized steel tape armor, omitted;

c) Stainless steel tape armor, indicated by X (stainless steel strips of different specifications can be X1, X2, Xn respectively).

4.6.5 Model representation method

Temperature class

Core wire × section, mm2 Rated voltage, kV Shape feature code Armored cover code Inner sheath code Insulation code Cable code (lead cable is indicated by QYJ) Temperature class. The maximum operating temperature of the conductor is divided into 90 ° C (90), 120 ° C (120), 150 ° C (150), 180 ° C (180), 204 ° C (204).

Example 1. Rated voltage 3kV, polypropylene insulation, nitrile rubber inner sheath, Monel steel belt armored 3×16mm2 conductor maximum working temperature 90°C flat diving Oil cable, expressed as. QYPNM3-3×16/90.

Example 2. Rated voltage 6kV, ethylene-propylene rubber insulation, ethylene-propylene rubber sheath, galvanized steel tape armored 3×20mm2 conductor maximum working temperature 120°C circular diving the oil cable is expressed as. QYEEY 6-3×20/120.

Example 3. Rated voltage 6kV, polyimide-F46 composite film/ethylene-propylene rubber combined insulation, lead inner sheath, Monel steel tape armored 3 × 10mm2 conductor most the cable with a high operating temperature of 120 °C is indicated as QYJYEQM6-3×10/120.

4.7 Transformer

4.7.1 Type

Three-phase transformer.

4.7.2 Model representation

QYSS - - ---/-

Secondary voltage, kV Primary voltage, kV Capacity, kVA Oil immersion (omitted); C-dry Transformer design serial number, the number is 9, 10, 11, the greater the number represents the transformer itself Lower loss Transformer code Example. Design a serial number of 9, a capacity of 100kVA, a primary voltage of 6kV, a secondary voltage of 1.5kV, a three-phase oil-immersed three-coil transformer for a submersible electric pump is expressed as.

QYSS9100-6/1.5

4.7.3 Voltage

The primary voltage of the transformer should be suitable for the local power grid conditions, and the secondary voltage should be multi-speed to compensate for the voltage drop of the submersible cable under different pumps.

4.7.4 Additional winding

Additional windings can be added to the transformer when required by the user.

4.8 Control cabinet

4.8.1 Type

High pressure or low pressure.

4.8.2 Model representation

QYK - ---

Rated current, A

Rated voltage, kV

Feature code. SN-indoor; SW-outdoor; HP-offshore platform; BP-inverter Control cabinet code Example. Rated current 60A, rated voltage 3kV Indoor submersible electric pump dedicated control cabinet is expressed as. QYKSN3-60.

4.9 Junction box

4.9.1 Type

Outdoor high pressure type.

4.9.2 Model representation

JXH - ---

Rated current, A

Rated voltage, kV

Feature code. ordinary (omitted); H-off platform; S-desert Junction box code Example. The junction box for offshore submersible electric pump with rated current 60A and rated voltage of 3kV is expressed as. JXHH3-60.

5.1 Submersible pump unit requirements

5.1.1 Downhole working conditions

The working conditions in the underground are shown in Table 2.

Table 2 Downhole working conditions

Environmental factors technical indicators remarks Downhole ambient temperature/°C 90,120,150,180 greater than 180 °C according to the agreement Pump suction port fluid viscosity/(mm2/s) <= 7 When the well fluid viscosity is greater than 7mm2/s need to be corrected, according to the agreement Pump suction gas-liquid ratio GLR <= 0.3 is greater than 0.3 when executed according to the agreement when the submersible electric pump is working, the motor casing well fluid flow velocity v/(m/s) >=0.3 is less than 0.3 when executed according to the agreement.

When the sand content in the well fluid/(g/m3) <= 500 is greater than 500g/m3, according to the agreement Full-angle rate of change/(°/30m) <= 3 When more than 3 °/30 m, according to the agreement Corrosive gases are not available, executed according to the agreement Nothing to do, according to the agreement

5.1.2 Ground environmental conditions

The ground environment should meet the following conditions.

a) Ambient temperature. -40 ° C ~ 40 ° C;

b) Relative humidity. the annual average is not more than 85%;

c) the altitude does not exceed 1000m;

d) When the ground environment conditions are special, follow the agreement between the manufacturer and the user.

5.2 Component Requirements

5.2.1 Motor

5.2.1.1 It should have good sealing performance. Under the pressure of 0.35MPa, keep the test ...