10 Questions You Should to Know about Derrick Hyperpool PMD Screen
HDD Equipment Spotlight: Shakers and Screen Technology
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Conventional mud systems owned by Directional Service South of Bossier City, Louisiana, were struggling to recycle the drilling mud effectively.
Each horizontal directional drilling (HDD) rig — two 440,000-lb rigs and one 625,000-lb rig, typically circulating 375 gpm and drilling up to 44-in. holes — was paired with a mud recycling system having four conventional shakers running flat mesh screens. DSS also utilized a secondary mud system with two additional conventional shakers for further polishing of the primary mud system overflow and to perform mud mixing.
The drills were required to stop frequently allowing sufficient time for the mud system to process the mud returns from downhole. Additionally, mud pump rebuilds were required every few weeks, with costs as high as $10,000 per month per pump.
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Directional Service South’s objectives included implementing a single high-performance system (replacing the six shaker system presently in use) that could effectively mix and recycle mud at rates up to 375 gpm, assuring the mud system was no longer the bottleneck of the drilling operation and reducing the frequency of rebuilding their mud pumps.
After spending time at Derrick Equipment Co.’s Houston test tank facility observing various Derrick shaker demonstrations, Directional Service South decided to upgrade one of its two shaker mud systems with Derrick Hyperpool shakers.
Drilling or tunneling performance is directly related to the overall cleaning ability of the separation equipment. Drilled solids remaining in the slurry have numerous adverse effects on the overall operation, significantly reducing its profitability. Consequently, selecting the proper separation equipment for your fleet is just as critical as choosing the correct drill or tunnel boring machine.
Derrick has offered premium slurry separation and desanding equipment to the worldwide microtunneling, horizontal directional drilling, large diameter tunneling, slurry wall/foundation drilling, water well drilling, and other civil construction industries for nearly 30 years. Throughout this time, Derrick has remained dedicated to complete in-house manufacturing of every machine, screen panel, and tank system. Each unit is created and assembled at Derrick’s Buffalo, New York headquarters facility.
One Hyperpool shaker would handle primary screening, while the second unit, fitted with a 10-cone inline desilter package, would handle finer particle separation. Both shakers would utilize Derrick Pyramid screens that fully comply with API RP13C standards.
Immediate results were seen after Directional Service South placed its first upgraded mud system into service in December 2016 in the Houston area.
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According to Directional Service South co-owner Jake Gautreaux, the Derrick Hyperpool shakers have exceeded expectations by providing the following benefits:
Reduced Non-Productive Time:
- The two Hyperpool shakers effectively handled the mud returns at 375 gpm, eliminating the frequent drill rig hold-ups due to inefficient mud processing.
- Frequency of mud pump rebuilds has been reduced dramatically. Typical rebuild intervals for high pressure pumps has improved from every few weeks to six months or better. This improved service life is due largely to improved solids removal efficiencies from the Hyperpool shakers and Pyramid screens, and maintaining a lower sand content, which now ranges from trace amounts to 1/4 percent.
- DSS estimates pump repair cost savings can be as much as $50,000 per pump over a six-month period.
Major reduction in screen consumption:
- Derrick’s patented Pyramid Screens improved processing capacity and provided significantly longer screen life
- The initial screen requirement has been reduced from 24 screens to eight screens. For a single crossing, which can exceed 8,000 ft in length, no more than eight screen panel changes have been required.
- Directional Service South estimates a reduction in screen costs in excess of 40 percent.
Increased HSE benefits:
- Greatly reduced shaker noise output increases rig crew safety.
- Unlike the previous conventional system that used wedges to hold down much heavier pre-tensioned panels, the far more user-friendly Derrick unique spring compression system encourages rig crews to change screens when needed. Together with lightweight screen panels, which allow for one-minute screen changes, this system has yielded significant HSE benefits.
In addition to the performance improvement, Gautreaux found that working with Derrick has been a “pleasure.” He has also found that the technical recommendations have been spot on in terms of the various upgrades to their mud systems, screen panel selection, and field troubleshooting.
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The Derrick Hyperpool shakers and innovative PMD screen technology have resulted in a much more cost-effective drilling program by drastically reducing non-productive time and operating costs and allowing for increased downhole production.
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With full confidence in the Derrick Hyperpool shakers, Pyramid screen technology, and first-class technical support, Directional Service South has now paired all three of its big rigs with an upgraded mud system each utilizing two Hyperpool shakers.
Shale shakers difference among drilling mud process shaker
There are many different kinds of shale shakers for drilling mud process. According to different vibration mode, applications, etc. we have below information of shaker types
Different vibration modes or tracking modes of shale shakers
There are linear motion shakers, elliptical motion shakers, balanced elliptical motion shakers, and dual motion shale shakers. At present, linear motion shaker is still popular with most users. Compared to other modes of shakers, it supplies a higher treating capacity
However, operating the linear motion shaker faces the problem of screen block and the horseshoe effect. Since the cuttings or the harmful solids are irregular shapes with a sharp edge, many particles will stick into the screen surface hole. And then, a more and more similar problem occurs. Finally, there will be a large jam area in total.
Furthermore, since the block on the screen cloth and the drilling mud property, there may be drilling fluids jam on the screen surface. This will lead to mud lost, decrease filtration efficiency and lead the cost increase.
What about the elliptical motion shaker? In the early dates, elliptical shakers are not balance. So, we also call it an irregular circular motion shaker. The features of such shakers include lower cost, lower capacity but slightly better filtration results. Since the material move in a circle track avoids blocking on screen. Under gravity force and drilling fluids pressure, solids will move away from screen holes easier than under linear motion.
Regards to balanced elliptical motion shaker, yes, it’s a combination of linear and elliptical motion shaker. Because, balanced elliptical motion shaker can get rid of screen blocking or jam and the horseshoe issue, in the meantime, it can handle larger capacity material than an elliptical motion shaker.
The latest generation of shaker is the dual motion shaker. It’s not only the combination of linear and elliptical vibration mode. But, it’s an integrative solution for various of working condition. It can be switched between linear motion and balanced elliptical motion very easily. So we can operate it properly under different working conditions. Such as large quantity drilling fluids to process or filter extra fine solids out of drilling mud.
To achieve different vibration mode of shakers, we need to adjust the motors configuration. Such as vibration strength same or not, one or two or three sets of vibration motor or just motor.
Screens for different shakers
Besides the vibration mode, there are other difference among shakers. Such as screen panels. Panels difference including the tensioning way or clamping system, the screen surface, and screen frame material. For tensioning way, there are hook strap one, wedge blocked one and compressed by air pressure or pneumatic system.
The different tensioning way defines different features and if it’s convenient or not on installing screens. If by wedge block, it requests hammers knock wedges gently on both side. If we need to uninstall all of the panels, we need to knock all the wedges one by one. After putting screens on shaker bed, we knock wedges into position well one by one
If screens are tensioned by pneumatic system, we just need to release the pressure and take out the panels one by one or just take out of the panel need to be replaced
When we don’t consider screen difference according to shaker design, we can find other difference on screen panels, too. Such as screen surface, flat or corrugated. The frame material is composite frame or metal frame.
Different brands of shale shakers and their advantages
For oil and gas drilling mud process and related applications, we know there are many famous brands. Such as Derrick, M-I SWACO, NOV Brandt, etc. And classical typical shakers from above is FLC series Mongoose series, Cobra series.
FLC series shaker including FLC500 and FLC2000 series, but now, typical one of Derrick is DP600 and Hyperpool series. If we asked users who had used Derrick FLC shakers and NOV, SWACO shaker, they would tell Derrick is always the number one to them. But what is the difference among them? Derrick shakers fit with their own innovated motors-Super G and Super 2G and the filtration efficiency/performance are very good.
NOV Brandt Cobra series shaker hold a bit larger screen area than FLC series. We use wedge blocks press the screens, that is more convenient and easy. Furthermore, there is less spare part cost than Derrick ones
Mongoose series shaker is classic typical equipment of M-I SWACO. The screen panels are composite frame and tensioned by wedge blocks. At the earlier stage, it’s the dual motion shaker with 3 motors and finally, shakers are 2-vibration motor dual motion shaker. And now, there is the vacuum system to help solve mud loss problem when fluids arrives on the panel of discharge end.
Selecting any of above famous brand shakers should be based on your actual working condition and your budget. You also can seek some used equipment or equivalent equipment. Let us know your question or interest if any. You will get the opmital solution under our proposal
If you are looking for more details, kindly visit Derrick Hyperpool PMD Screen.
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