Comparison of several buffers in oilfield equipment-Nantong Strong Petroleum Technology Co., LTD

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Comparison of several buffers in oilfield equipment

Release Time：

2025-08-02 12:10:20

With the sustained and rapid development of the national economy, a broad market has been provided for petroleum and petrochemical products, which has also driven the demand and development of the petroleum drilling and production equipment manufacturing industry. Under the market demand for oilfield equipment, requirements have also been put forward for the noise of the equipment. At this time, buffers are needed. Let's talk about the advantages and disadvantages of two types of buffers in oilfield equipment.

During the descending process of oilfield equipment, a large amount of energy will accumulate, and this energy will be released in a short time when reaching the target position, generating a large impact force. Without the protection of a buffer, this impact force will directly hit the equipment, not only producing loud noise, but even directly damaging the equipment and causing incalculable losses. To reduce the impact force on the equipment, a buffer is usually installed. Currently, the known buffers used in oilfield equipment are spring shock absorbers and hydraulic buffers.

The advantage of the spring shock absorber is its low price. It utilizes the characteristics of the spring to convert the received impact force into the elastic potential energy of the spring, and then uses the reaction force of the spring to decelerate the impact force. However, if the impact force is too large, the rebound force generated by the collision will increase accordingly, and the rebound speed will also be faster. In special cases, the rebound force may cause damage to the equipment. In addition, the spring will experience fatigue after long-term repeated use, and noise during operation is unavoidable.

Heavy-duty hydraulic buffer

The interior of the hydraulic buffer is filled with hydraulic oil and nitrogen, and compressed gas is used as a return spring. When the impact head is hit by an external force, the piston rod is pressed into the cylinder, and the piston squeezes to make the hydraulic oil flow out from throttling holes of different sizes into the oil storage chamber. As the stroke decreases, the throttling holes are gradually closed, thereby achieving linear deceleration of the moving object. This design not only eliminates the fatigue phenomenon of the spring, but also realizes wear-free operation, which can greatly improve the service life of the equipment, reduce maintenance work, and at the same time reduce the noise generated during operation.

Through comparison, it can be seen that the performance of the hydraulic buffer is quite different from that of the traditional spring. The traditional spring shock absorber still has many defects in use. The hydraulic buffer can obtain a large buffer capacity with a small resistance, which provides an effective technical guarantee for improving work efficiency.