KOT Three-Position Check Valve (rated to 21 MPa and 50 Mpa)




It is used for a two-way fluid bypass through its cavity and as a check valve in the tubing string.

APPLICATION

  • flowing well operation;
  • well operation with rodless pumps;
  • mixed well operation (start-up with a pump and flowing operation after the pump is shut down).

ADVANTAGES

  • enables to perform a direct flushing of the space below the valve or chemical agents injection in the course of flowing well operation;
  • enables to flush the pump cavity or inject chemical agents in the course of well pumping;
  • increases operation time between failures of the pumping unit.

DESIGN FEATURES

  • it has a check valve to maintain the column of fluid in the tubing string;
  • it has a movable bushing to provide communication between the space above and below the valve when preset pressure differential is generated in the tubing.

TESTIMONIALS

  • Testimonial/recommendation from TPP “RITEKBeloyarskneft”


ARTICLES ABOUT PRODUCT

  • Oil. Gas. Novation 12.2012 “Technologies and equipment to reduce expenses in squeeze cementing
  • Oilfield Engineering, No. 1 2012 “Underground equipment for the efficient operation of wells with abnormal operating conditions

SPECIFICATIONS

Parameter, unit of measurement КОТ-93-40(29)-210-Т1001-К3
AHA 2.505.012-07
Minimum inner diameter of the production string, mm. 112
Maximum temperature, °С 100(1501)
Maximum pressure differential, MPa 21
Pressure differential required to open the valve, MPa:
- normal upwards 0.01
- for direct crossflow, downwards2 14±2.0
Dimensions, mm:
- outside diameter (not more than) 93
- passage bore diameter 40
- equivalent diameter of the flushing port 29
- length (not more than) 727
Weight, kg (not more than) 24
Plain-end tubing connection thread as per GOST 633-80: 73
1) in top part (coupling)
2) in bottom part (nipple)

1When placing an equipment order for Т=150°С, please indicate Т150.

2When an ESP unit is used during the operation it is installed instead of the check valve above the ESP.


The valve is available in the following configurations:

No.

SPTA kit

Valves for Т=100°С

Valves for Т=150°С

Type

Design Documentation code

Type

Design Documentation code

1

Zero

КОТ-93-40(29)-210-Т100-К3-00

AHA 2.505.012-07/00

KOT-93-40(29)-210-Т150-К3-00

AHA 2.505.012-27/00

2

Minimum SPTA 01

КОТ-93-40(29)-210-Т100-К3-01

AHA 2.505.012-07/01

KOT-93-40(29)-210-Т150-К3-01

AHA 2.505.012-27/01

3

Standard SPTA 02

КОТ-93-40(29)-210-Т100-К3-02

AHA 2.505.012-07/02

КОТ-93-40(29)-210-Т150-К3-02

AHA 2.505.012-27/02

4

Standard Plus SPTA 03

КОТ-93-40(29)-210-Т100-К3-03

AHA 2.505.012-07/03

КОТ-93-40(29)-210-Т150-К3-03

AHA 2.505.012-27/03

5

Maximum SPTA 04

КОТ-93-40(29)-210-Т100-К3-04

AHA 2.505.012-07/04

КОТ-93-40(29)-210-Т150-К3-04

AHA 2.505.012-27/04

Sample order code of the valve for 21 MPa in “Zero” configuration:

  • for Т=100ºС — KOT-93-40(29)-210-Т100-К3-00 AHA 2.505.012-07/00;
  • for Т=150ºС — KOT-93-40(29)-210-Т150-К3-00 AHA 2.505.012-27/00.

Sample order code of the valve for 35 MPa in “Standard SPTA 02” configuration:

  • for Т=100ºС — KOT-93-45(42)-350-Т100-К3-02 AHA 2.505.150/02;
  • for Т=150ºС — KOT-93-45(42)-350-Т150-К3-02 AHA 2.505.150-20/02.

1. THE VALVE IS OPEN

The valve is open upwards for oil production.

2. THE VLAVE IS CLOSED

The valve is closed. Check valve function.

3. THE VALVE IS OPEN 

The valve is open downwards for direct flushing of the pump cavity.

Regarding equipment purchase, contact

Dinar Sufiyanov
Dinar Sufiyanov
Post:  Head of sales and service development in foreign markets
Phone:  +7 (34767) 5-21-01
Cell:  +7-937-318-87-56
E-mail:  razvitie@npf-paker.ru
Skype:  ved-paker