High-Efficiency Shock Absorbers

These shock absorbers are designed to mitigate the negative effects of dynamic impact loads and vibrations experienced during drilling. They utilize two-way disc springs to break the vibration load period and provide several benefits to drilling operations. Here's a summary of the key points you've mentioned:

Function and Principle:

High efficiency shock absorbers are used in drilling operations to counteract the dynamic impact loads transmitted to the drilling tool. These loads can lead to premature failures of equipment, low Rate of Penetration (ROP), and other drilling complications. The shock absorbers consist of various components including a top joint, buffer ring, balance sleeve, balance shaft, vibration sleeve, high efficiency disc spring group, mandrel, spline sleeve, and spline shaft.

The shock absorber's core principle revolves around the use of two-way disc springs. These springs help break the vibration load period, allowing the drill tool to accommodate a wider range of bit weight. When axial loads are generated, the disc spring assembly effectively absorbs the energy from vibrations and mitigates the vibration force through mechanical friction. This reduction in vibration load helps protect the drilling tool and enhances drilling performance.

Advantages:

· Increased ROP: By reducing the negative impact of vibrations and dynamic loads, high efficiency shock absorbers can lead to an increase in the Rate of Penetration, which means faster drilling progress.

· Extended Drill Bit Life: The shock absorbers' ability to absorb energy from vibrations and impacts can lead to a longer lifespan for the drill bits, reducing the need for frequent replacements.

· Protection for BHA and Drill String: The reduction in vibration load helps protect the Bottom Hole Assembly (BHA) and the entire drill string from premature wear and damage, ultimately improving equipment longevity.

· Fatigue Analysis and Durability: The shock absorbers are designed with careful fatigue analysis in mind. High-strength ductile materials are used, and key components are cold-processed to enhance fatigue life. This design ensures the shock absorbers can withstand high-pressure and high-temperature environments.

· Coating for Corrosion and Wear Resistance: The shock absorbers are coated with a super mandrel coating that provides excellent resistance to both corrosion and wear, ensuring the equipment remains durable over time.

· Mud Scraper and Seal: The presence of a mud scraper and seal enhances the shock absorber's resilience against high torque resistance and impacts, which are common in drilling operations.

Scope of Application:

These high efficiency shock absorbers find application in various drilling scenarios, including:

· Vertical well drilling

· Hard formation drilling in directional wells

· Horizontal section drilling

· Milling operations

· Reaming operations

· Coiled tubing drilling

In summary, high efficiency shock absorbers play a crucial role in improving drilling efficiency, extending equipment lifespan, and safeguarding the drilling tool and components from the detrimental effects of vibrations and dynamic loads.