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Nitrogen plants (AGU (АГУ) 2 400.35)

Новинка

Field of application

The nitrogen gasification plant AGU 2400.35 (АГУ 2400.35) (mobile) is designed for safe conversion of liquid nitrogen into a gaseous state and supplying it under specified pressure and temperature to a well, pipeline or other process equipment.

Technology

A mobile gasification plant allows to inject nitrogen gas into the well, to aerate and to eject liquid. Gradually, the density of the well fluid and the bottomhole pressure are lowering which causes the inflow of oil and gas from the formation.

This significantly increases the explosion safety of the works and simplifies the process control over a wide range of pressures and costs.

It is especially effective to combine nitrogen injection with coiled tubing - to clean the shaft and the bottomhole at low formation pressures. For wells with horizontal sections, the use of this technology provides for the efficient cleaning of the shaft and allows to avoid the problems of mechanical impurities setting down during circulation (proppant after hydraulic fracturing). In this case, the use of nitrogen gas decreases the weight of the liquid column during well washing and increases the flow rate.

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Intended use

The use of nitrogen gas helps to increase the production rate of wells and, in general, production of the field.

In addition, experts consider the use of nitrogen gas to be one of the effective methods of conducting service operations:

creation of an inert environment in tanks for the repair and maintenance of wells and natural gas storage facilities;
blowing of technological systems and pipelines, their crimping, conservation and explosion protection.

Thus, the scope of AGU (АГУ) use includes development, maintenance and repair of oil and gas wells, and pipelines. The unit can be used independently and together with the coiled tubing equipment complex.

The first PSKOVTEHGAZ® AGU 2 400.35 (АГУ 2 400.35) was designed, manufactured, tested and shipped in 2017. All these works required only 112 business days.

AGU 2 400.35 (АГУ 2 400.35) specifications and components:

1	Working pressure of nitrogen gas injection (at the outlet of the unit), MPa	35 ±10%
2	Maximum (peak) nitrogen injection pressure, MPa	40 ±10%
3	Productivity by nitrogen injection, NCM/min; NCM/hour:
	maximum (two pumps working)	40 ±10% 2400 ±10%
	minimum * (one pump working)	20 ±10% 1200 ±10%
	* when using frequency converter, the minimum capacity is	6 NCM/min (360 NCM/h)
4	Nitrogen gas temperature at the outlet, °C
	maximum at 2400 NCM/hour	+20±10
	maximum at 1200 NCM/hour	+150±10
5	Unit weight, kg, no more than	15000
6	Overall dimensions, mm, not more than
	length	6060
	width	2440
	height	2740
7	Diesel Generating Set (DGU (ДГУ)
	model	GMGen GMJ165 (150kVA)
	output voltage	AC, 400 / 230V, 50Hz
	output power for main application, kW	120
	output power reserve, for 1 hour every 12 hours, kW	132
8	Thermal module (TMVG (ТМВГ) with control system (heat energy recovery unit),
	label	TMM-TMG.90.01.000 (ТММ-ТМГ.90.01.000)
	rated maximum power, kW	90
	at water consumption, m3/h	8
	temperature of the liquid coolant at the inlet, °С	80
	temperature of the liquid coolant at the outlet, °С	90±2
	inlet gas temperature, °С	500
	outlet gas temperature, °С	120
	exhaust gas consumption, kg/s	0.21
9	Cryogenic pump unit ANK (АНК)
	model	ANK-EE-30.35 (АНК-ЕЕ-30.35)
	working pressure of injection, MPa	35
	maximum capacity of one unit, l/min	30
	minimum capacity of one unit**, l/min	9
	** when using frequency converter
	number of units in the plant, pcs.	2
10	Atmospheric evaporator of cryogenic liquid:
	model	IKZH-Av-900.35.00.000 (ИКЖ-Ав-900.35.00.000)
	Working pressure, MPa	35
	productivity, NCM/min; NCM/hour:	up to 150 ± 10%; 900 ± 10%
	weight, kg	230
	overall dimensions, mm, no more than:
	length	3780
	width	2400
	height	2160
11	Liquid heater for cryogenic liquid:
	model	IKZH-V-2300.35.02.000 (ИКЖ-В-2300.35.02.000)
	Working pressure, MPa	35
	productivity, NCM/min; NCM/hour:	up to 40 ± 10%; 2400 ± 10%
	heat-transfer agent	ethylene glycol, ES Compleat™, Premix 50/50
	heat-transfer agent filling volume (heat exchanger tank/whole system), l	47/195
	minimum temperature of the heat transfer agent (working) with TMVG (ТМВГ) / without TMVG (ТМВГ), °С	+65/+2
	maximum temperature of the heat transfer agent (working) with TMVG (ТМВГ) / without TMVG (ТМВГ), °С	+92/+108
	maximum power consumption, kW	90
	weight, kg	91
	overall dimensions, mm, no more than:
	length	530
	width	400
	height	526
12	Oil heater for cryogenic liquid:
	model	IKZH-V-2300.35.03.000 (ИКЖ-В-2300.35.03.000)
	Working pressure, MPa	35
	productivity, NCM/min; NCM/hour:	up to 40 ± 10%; 2400 ± 10%
	heat transfer agent oil	AMT-300T
	heat-transfer agent filling volume (heat exchanger tank/whole system), l	35/80
	minimum temperature of the heat transfer agent (working), °С	-40
	maximum temperature of the heat transfer agent (working), °С	+200
	maximum power consumption, kW	45
	weight, kg	110
	overall dimensions, mm, no more than:
	length	590
	width	4600
	height	526
13	Cryogenic vessel (not included)

Comparison of models of evaporative nitrogen plants of different manufacturers

№	Parameter	JR70	A100-40	AGU 2 400.35 (АГУ 2 400.35) PSKOVTEHGAZ®
1	Maximum (peak) nitrogen injection pressure, MPa	69	up to 70	40 ±10%
2	Productivity, m³/min	up to 85	up to 85	up to 83
3	Nitrogen temperature at the outlet	+15 ... + 21°С	ambient t° minus 20°С	Up to + 150°C, regardless of the ambient t°
4	Liquid nitrogen pump	ACD Cryogenics ASD 3-GUPD, reciprocating (USA)	Hydra Rig NP200, reciprocating (USA)	ANK-EE-30.35 (АНК-ЕЕ-30.35), 2 pcs. , reciprocating (PSKOVTEHGAZ®, Russia)
5	Charging rotary pump	ACD AC-18 (USA)	HP02966, Rotary (USA)	No
6	Liquid nitrogen evaporator	Cryoquip WWP-145-10 (USA)	HHC02963 (USA)	Atmospheric evaporator of cryogenic liquid (АТ1) made of finned tube with IKZH-Av-900.35 (ИКЖ-Ав-900.35) fans (PSKOVTEHGAZ®, Russia)
7	Purity of nitrogen gas	99.9	99.9	99.9
8	Working temperature mode	from -40 to +45°С	from -40 to +40°С	from -40 to +50°C
9	Unit weight without nitrogen, kg, not more than	34 000	10 000 - without vehicle	Up to 15 000
10	Manufacturer country	China	Assembly - Belarus, production - USA	Russia

Information sourced from web sites:

http://www.cttimes.org/uploads/download/nitrogen-units.pdf and https://moscow.kolteko.com

PSKOVTEHGAZ® can produce AGU (АГУ) with the following parameters:

Purity of nitrogen	not less than 99% (depending on the quality of the initial liquid nitrogen)
Performance	from 350 to 5 000 ± 10% NCM/h
Nitrogen pressure: working	up to 40 MPa
Ambient temperature during operation	-40°С ... +50°С
Nitrogen temperature at the outlet	Up to +150°С
Time to enter operating mode	up to 30 min.

Scope of delivery:

1. Pumping cryogenic unit produced by PSKOVTEHGAZ®; type - ANK (АНК).

2. Heat exchangers: produced by PSKOVTEHGAZ®. Selection by order parameters:

2.1 - atmospheric evaporator;

2.2 - liquid evaporator;

2.3 - solid-state evaporator-preheater.

Selection of the model and quantity - based on the required performance of the unit.

3. Tank for liquid nitrogen - selection upon Customer's request.

4 - Control system - optional: automated; combined; manual.

5 - Autonomous energy supply system (DES (ДЭС) shall be selected based on the results of calculations.

6. Frame or container version.

7. Chassis - upon Customer's request: trailer, semitrailer, tractor.

The overall dimensions and layout of the equipment provide for the location of the units on the site or on the platform of the vehicle, taking into account the safety and accessibility standards for mounting and repair works, as well as ease of operation.

8. Operator's cabin - the composition shall be determined by the Customer.

9. Exhaust gas heat recovery (optional).

Transport version

Frames with equipment are installed on a semi-trailer, semi-drive chassis or any other transport base - at the Customer's choice.

Video about AGU 2400.35 (АГУ 2400.35)

Economic effect and other advantages of PSKOVTEHGAZ® AGU (АГУ):

1. Significant price advantage in comparison with foreign counterparts.

2. Flexible regulation of nitrogen productivity and temperature allows for energy costs reduction and longer operational life of AGU (АГУ).

3. Unit mobility.

4. Complete autonomy (within the limits of nitrogen volume in the tank).

5. Possibility to upgrade the unit to increase productivity and pressure.

Why you should consider working with PSKOVTEHGAZ®: