COMPOSITE DIAPHRAGM FOR ROLLER CONE PRESSURE COMPENSATION SYSTEM

摘要

To address issues of durability of pressure compensation systems in roller cone rock bits, a composite diaphragm of a pressure compensation system for a roller cone drill bit includes an inner surface that defines an inner cavity and is formed of a first elastomeric material. The inner cavity is configured to serve as a lubricant reservoir. An external surface is disposed opposite the inner surface and is formed of a second elastomeric material that is different than the first elastomeric material.

主权项

1. A composite diaphragm of a pressure compensation system for a roller cone drill bit, comprising:
an inner surface formed of a first elastomeric material and defining an inner cavity configured to serve as a lubricant reservoir; and an external surface disposed opposite the inner surface and formed of a second elastomeric material, the second elastomeric material being different than the first elastomeric material.