Presentation is loading. Please wait.

Presentation is loading. Please wait.

VSH2 Nitrogen Over Hydraulic Unit

Similar presentations

Presentation on theme: "VSH2 Nitrogen Over Hydraulic Unit"— Presentation transcript:


2 VSH2 Nitrogen Over Hydraulic Unit
What is the VSH2 ? Reciprocating rod pumping unit Operates with conventional sucker rod system Uses nitrogen-over-hydraulic technology Direct drive pump Variable SPM in seconds Greater well flexibility Electric or gas operated

3 VSH2 Nitrogen-over-Hydraulic System
Two-stage cylinder Nitrogen over Hydraulic Accumulator Nitrogen pressure pushes the accumulator piston down forcing the hydraulic oil from the accumulator into the upper stage of the cylinder lifting 2/3 of the rod and fluid weight. Polish rod direction is reversed via proximity switches sending a signal to the Electric Displacement Valve that changes the chamber in the lower stage to which the hydraulic oil flows.

4 VSH2 Pumping Unit Operating Principle
Nitrogen pushes down on the accumulator piston. Hydraulic fluid under piston is forced into upper chamber thus pushing the cylinder piston up. Servo Valve routes pressurized fluid to lower stages to cycle the cylinder up or down. Proximity switches activate the EDC valve Change SPM by turning switches

5 VSH2 Direct Drive Pump Variable speed Rated 3100 rpm Rated at 6000 lb
Closed loop Less leak points Less parts Long service life

6 VSH2 Electric Motor Drive
Direct drive No belts No sheaves

7 VSH2 Benefits Specifically developed for the fields with heavy crude oil, wells with rod fall problems and better well control. Lifts greater loads using less energy Handles PPRL’s up to 40,000 lbs. Pumps depths to 10,000 ft. Changes strokes per minute with a turn of the switch in either direction Srokes per Minute can be as slow as 0 and as fast as 9 (depending on model)

8 VSH2 Benefits Three sizes - 60”,120” & 150”
SPM - 0 to 9 (depending on unit size) PPRL - 35, ,000 lbs. Three moving parts - cylinder, accumulator and direct drive pump (excluding prime mover) Safety shutdowns - rod separation, high pressure, low fluid level, high oil temp. SPM changes with the turn of a switch Adjustable stroke lengths Skid size - 5ft x 8ft x 74”

9 VSH2 Why is this System Different ?
Nitrogen-over-Hydraulic technology Three moving parts Greater rod loads than conventional units Change SPM quicker Wider range of applications Lower maintenance Can reduce energy consumption

10 VSH2 Three Moving Parts Accumulator nitrogen / hydraulic
Cylinder two stage double acting Pump direct drive variable speeds up & down

11 VSH2 Control Box Panel off/on Bridal separation High pressure
Jog up/jog dwn Re-set button Manual / auto Power On light Speed up Speed down Auto start button

12 VSH2 Maintenance One filter after the first 30 days and then every 5 months thereafter. Normal equipment visual inspections.

13 VSH2 Safety Controls Low hydraulic oil level High oil temperature
Manual thermometer Rod separation Over torque relief valve High pressure alarm light

14 VSH2 Rod Separation Plate
When the pump sticks, separation between plate and switch occurs This de-strokes the unit and stops the unit from stroking until the polish rod falls or the pumper is aware of the problem If the polish rods falls later, the unit continues to stroke until separation occurs again A red alarm light indicates separation has occurred sometime during the day or night.

15 VSH2 Base Plate Installation

16 VSH2 Pedestal Mount Unit

17 VHS2 Portable Unit

18 VSH2 Portable 120” Natural Gas Unit

19 VSH2 Gas Manifold Isolates individual bottles Greater fill capacities
Less nitrogen loss

20 VSH2 Overview When to use - temporary or permanent
Well evaluating and testing During downtime for repairs of conventional Lengthily delivery times Production decline to reduce energy consumption Looking for a unit that can reduce freight,setup charges,site preparation, maintenance and energy consumption Greater well control Greater well flexibility

Download ppt "VSH2 Nitrogen Over Hydraulic Unit"

Similar presentations

Ads by Google