Above Ground
HRP Hydraulic Cylinder
Features & Benefits
Long & slow is the way to go
The long stroking cylinder allows rods to travel at lower speeds, reduced rod string fatigue while its near-fixed traveling speeds resulting in lower rod string compression.
The reduced SPM also reduces traveling/standing valve wear and enables longer tubing life due to longer coupling-to-tubing wear patterns.
The long stroke also provide higher compression ratios, which helps reduce gas locking as well as better mechanical efficiency (stroke vs. stretch ratio).
Ability to lift larger pump plungers = higher volume rate capacities.
No more stuffing box leaks
The HRP cylinder negates the need for a stuffing box and thus eliminate stuffing box leaks typically associated with wear & tear of stuffing box rubbers, or damaged polished rods.
The cylinder has an tried and proven integrated sealing system "stuffing box" that attaches to the bottom of the cylinder, which seats above the flow tee/composite rod lock.
A secondary stuffinx box can be optioned for very dirty fluids and heavy crude. The secondary stuffing box isolate contanimation away from the cylinder and "wipe" the polished rod clean before it enters the cylinder's integral seals.
No Pedestal, Support or Wiring needed
Installs in less time than a walking beam horsehead, bridle and carrier bar.
Unlike most hydraulic cylinders in the market, the HRP hydraulic cylinder requires no pedestal or guide wire supports.
There are also no sensors or electrical devide needed on the cylinder for position and load calculations, which is done through the sensors on the power unit.
This ensures the cylinder is safe on gas wells and hazardous environment.
Lower cost for the higer production
The HRP long stroke hydraulic cylinders means you don't have to spend big on comparable stroke units such as a Rotaflex or a large conventional unit.
The cylinder itself cost less than comparable cylinders in the market and is cheaper to maintainn and service.
The cylinder also allows the installation of tubing rotators as the rods spin freely in the tubing, reducing tubing & rod wear.
Specifications
Stroke Length
Cylinder Sizes
Peak Polished Rod Load (PPRL)
Design Pressure & Temperature
Cylinder Sizes & PPRL Ratings
| Cylinder Size (Bore x Stroke) | Max PPRL (@ 3000 psig) | Extended Length | Collapsed Length |
|---|---|---|---|
| 2.5" x 240" | 12,363 | 527" (44') | 287" (24') |
| 3.0" x 240" | 18,840 | 527" (44') | 287" (24') |
| 3.5" x 240" | 25,169 | 527" (44') | 287" (24') |
| 3.5" x 288" | 25,169 | 623" (52') | 335" (28') |
| 3.5" x 366" | 25,169 | 719" (60') | 383" (32') |
| 4.0" x 240" | 34,000 | 527" (44') | 287" (24') |
| 4.0" x 288" | 34,000 | 623" (52') | 335" (28') |
| 4.0" x 336" | 34,000 | 719" (60') | 383" (32') |
| 4.5" x 240" | 42,390 | 527" (44') | 287" (24') |
| 4.5" x 228" | 42,390 | 623" (52') | 335" (28') |
| 4.5" x 336" | 42,390 | 719" (60') | 383" (32') |
| 5.0" x 336" | 53,376 | 719" (60') | 383" (32') |
