DL Safe-Set Hammerless Liner Retainer

 

The technical essence of the Blak-JAK system lies in its innovative dual safeguard mechanism, which is coordinated by the Hydra-CEL hydraulic tension device and the Lok-CEL mechanical locking device to achieve the perfect separation and combination of "precise force application" and "absolute locking".

Hydra-CEL (Hydraulic Tensioning Device): The system's "power heart". As a high-precision hydraulic tensioning equipment, Hydra-CEL applies precisely calculated and controlled preload to the entire cylinder head assembly during installation. By connecting to standard hydraulic pumps, operators can effortlessly and smoothly secure the Lok-CEL in tension while ensuring uniform compressive force on the cylinder liner within the pump chamber. This quantifiable and repeatable force application method completely replaces the labor-intensive hammering tightening technique that relies on operator experience and physical strength, fundamentally eliminating cylinder liner damage or seal failure caused by excessive or insufficient force.

Lok-CEL (Mechanical Locking Device): This serves as the system's "safety cornerstone". The redesigned Lok-CEL locking nut assembly functions as a pure, robust mechanical locking unit. Once the Hydra-CEL is pre-tightened, Lok-CEL mechanically secures the tension force in place. Throughout the mud pump's operational cycle, the cylinder liner's fixation relies entirely on Lok-CEL's rigid mechanical structure without requiring any hydraulic pressure maintenance. This design eliminates the risk of gradual pressure leakage inherent in hydraulic systems, ensuring consistent and reliable cylinder liner retention during prolonged, high-intensity pumping operations.

The system's most prominent design highlight lies in its ** "single hydraulic unit" concept. Unlike complex systems requiring separate hydraulic components for each pressure cover, Blak-JAK's entire mud pump (whether three-cylinder or five-cylinder) only needs maintenance using a single** Hydra-CEL device** for cylinder liner replacement. This simplified design philosophy delivers unparalleled advantages for field operations: fewer potential hydraulic leakage points, significantly reduced maintenance complexity, lower spare parts inventory requirements, and enhanced overall system reliability. For drilling contractors pursuing the lowest total cost of ownership (TCO) and highest equipment uptime (Uptime), this represents an attractive value proposition. The design embodies a profound understanding-- of harsh field environments and practical operational demands. In remote and challenging conditions, simplicity is the ultimate reliability.

Human factors engineering advantages of lightweight design

Reduce labor intensity: The lighter weight means that the operator needs less physical strength to move, position and install parts, which significantly reduces the difficulty and fatigue of single operation.

Improve operation safety: reduce the risk of muscle strain, sprain and other work-related injuries caused by carrying heavy and clumsy parts.

Enhancing installation efficiency and precision: In confined drilling rig areas with complex environments, lightweight components enable easier handling and precise alignment. This not only accelerates installation speed but also ensures cylinder liners are properly installed in one go, eliminating rework caused by misalignment. This streamlined process directly reduces downtime for equipment replacement.

 

 

In the drilling industry, the adage "time is money" rings especially true. With daily rig costs ranging from tens of thousands to hundreds of thousands of dollars, any unplanned downtime directly impacts revenue. Traditional cylinder liner replacements, which are time-consuming and typically require multiple operators working together, remain a major cause of prolonged downtime in mud pump maintenance.

MISSION Blak-JAK system directly translates downtime into profit through two core advantages:

Significantly reduced replacement time: Replacement time reduced by 90% to less than 15 minutes.

Achieve efficient single person operation: The system can be replaced by only one operator.

Safety production: fundamentally eliminate high-risk operations

Reduce direct costs: By preventing workplace injuries, businesses can significantly reduce related medical costs, work-related compensation and the resulting increase in insurance rates.

Avoid indirect losses: Once a serious accident occurs, it often triggers an investigation by the regulatory authorities, resulting in a prolonged suspension of drilling operations, and the losses far exceed the direct cost of the accident itself. The Blak-JAK system helps companies avoid this catastrophic shutdown risk by eliminating the root cause of the accident.

Extend the life of consumables and optimize the cost of the whole cycle

Consumables (such as cylinder liners, pistons, etc.) on the hydraulic end of mud pumps are a significant expense in drilling operations. The Blak-JAK system can effectively extend the service life of these high-value components through its precise installation technology, thereby optimizing the total life cycle cost.

Modern drilling operations increasingly utilize high-performance ceramic or zirconia (ZrO₂) bushings. While these materials exhibit exceptional wear resistance and service life far exceeding traditional chromium-iron bushings, their brittle nature makes them highly susceptible to installation stresses. The conventional hammer-driven fastening method, which applies uneven impact forces and torque distribution, often induces microcracks during bushing installation. This stress concentration mechanism may ultimately lead to premature failure under high-pressure operating conditions.

The Hydra-CEL hydraulic tensioning system from Blak-JAK delivers precise, consistent, and repeatable clamping forces that ensure uniform pressure across the cylinder liner's entire circumference. This innovative solution effectively resolves critical challenges in manufacturing. The combination of gentle yet robust installation ensures optimal protection for ceramic and zirconia liners, allowing them to fully harness their exceptional long service life advantages.

Extending the life of the cylinder liner also has a knock-on effect. A smoother, slower-wear inner wall of the cylinder liner can significantly reduce wear on the piston.

A case study in the industry demonstrates that under identical operating conditions, a slurry pump using zirconia-lined cylinder liners consumes 12 pistons compared to a conventional chromium-iron liner pump that uses 55. This piston cost savings alone exceeds $8,000, not including maintenance downtime reduced by fewer piston replacements. The Blak-JAK system achieves dual cost efficiencies for contractors by ensuring reliable operation of high-performance cylinder liners, thereby significantly lowering piston consumption rates.

 

 

Technical characteristics comparison of main cylinder liner quick change system

Technical features (Technical Feature)	MISSION Blak-JAK	Forum Energy Tech (FET) P-Quip LRS	Premium Oilfield (Sur-Lock®)	Southwest Oilfield (SWOP) Quick Change
Principle of force (Tensioning principle)	Hydraulic-Mechanical Hybrid (HMH)	Spring-mechanical (Spring-Mechanical)	Pure Mechanical Gear Multiplication (PMGM)	Hydraulic-Mechanical Hybrid (HMH)
Power Source (PS)	Standard Hydraulic Pump	Standard Hydraulic Pump (for release) (Standard Hydraulic Pump for release)	Impact Wrench (I.W.)	Standard Hydraulic Pump (SHP)
Core Components	Single hydraulic cylinder (Hydra-CEL) and mechanical lock (Lok-CEL)	Patented Spring Pack (PSP)	Planetary Gear Torque System (PGT)	Hydraulic Actuators (HA)
Maintenance Complexity (MC)	Minimal-Only one hydraulic unit needs to be maintained	Moderate (medium) -The spring assembly may require periodic calibration or replacement	Higher (Higher) -Internal gear systems require lubrication and maintenance	Moderate (M) -May involve multiple hydraulic assemblies
Design Advantage (DA)	Extreme reliability and simplicity, installation force is precisely controlled	Constant spring force, no need for continuous hydraulic pressure	No external hydraulic pump is required, high integration	Rapid hydraulic drive
Potential trade-offs	External hydraulic source is required	Spring fatigue and preload decay risk may exist after long-term use	Impact wrench torque control accuracy is limited, may cause impact on components	The system complexity is relatively high, and there are many potential failure points

 

 

List of compatible pumps and installation guide

One of the key market advantages of the Blak-JAK system lies in its exceptional openness and broad applicability. Rather than being a closed system specifically designed for NOV's proprietary mud pumps, it serves as a universal solution capable of retrofitting most mainstream pump models across the industry. This extensive compatibility holds immeasurable strategic value for drilling contractors operating "hybrid fleets" composed of equipment from different manufacturers.

According to official information, the Blak-JAK barrel press system is compatible with specific pump types from the following well-known manufacturers:

NOV brands: National, Oilwell, Continental Emsco, Lewco

Other mainstream manufacturers: Gardner Denver, Hong Hua (Honghua), Bomco (Baoji Petroleum Machinery)

And other popular pump types from many manufacturers

This broad compatibility means that drilling contractors can implement standardized cylinder liner replacement procedures across their entire pump fleet, regardless of the pump brand. The benefits are manifold:

Simplified maintenance and training: technicians only need to learn and master a set of operation procedures and maintenance specifications, greatly reducing the cost of training and the chance of error.

Optimize spare parts inventory: Contractors can centrally manage Blak-JAK system spare parts (e.g., Hydra-CEL seals) without having to stock a variety of parts for different brands of quick-change systems, thereby reducing inventory capital occupancy and management complexity.

Increase asset value: The installation of Blak-JAK system for existing old pump types can not only improve the safety and efficiency of operation, but also effectively extend their service life and enhance the overall value of stock assets.

Blak-JAK Ecosystem: Building a Comprehensive Hammer-Free Operation Platform

Other core members of the ecosystem include:

Blak-JAK HydrA-Lign Self-aligning Piston Rod: This innovative piston rod assembly automatically compensates for potential misalignment between the pump's power and hydraulic ends through its unique design. This significantly reduces lateral loads on the piston, thereby substantially extending the service life of both the piston and cylinder liner. When combined with the Blak-JAK cylinder liner gland system, their synergistic effect is amplified-- The cylinder liner gland system ensures precise fixation of the liner, while the piston rod system guarantees optimal motion paths for the piston within the liner. This dual-action configuration maximizes the lifespan of the entire wear-prone component system.

Blak-JAK Torque Pro/ Torque Pro Lite Quick-Change Valve System: This innovative system for mud pump valve replacement features a hammerless design. Using hydraulic wrenches to tighten and loosen valve cover plates, it requires only a quarter turn rotation to remove the plates, significantly enhancing both the speed and safety of valve replacement operations.

Blak-JAK Washpipe Cartridge Quick-Change System: This system combines the water pipe and packing into a single, quick-change unit. This allows replacement work to be done in advance on the surface, then installed as a single unit onto the top drive or faucet. This eliminates hammering operations and significantly improves efficiency.

 

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