Power Sections

Dyna-Drill power sections provide superior staying power to sustain long production hours and unrivaled mud motor performance in extreme drilling applications. Dyna-Drill power sections can be teamed with mud motors ranging from 2 7/8- to 11 1/2-in diameter.

Search Spec Sheets
Advanced technology from and advanced lab

Dyna-Drill Technologies’ Advanced Elastomer Lab is a state-of-the-art facility dedicated to improving PDM performance. Through a regimen of continuous research and sophisticated testing protocols, Dyna-Drill provides our customers with the latest in elastomer technology.

The Advanced Elastomer Lab has developed improved stator rubber compounds and continues to study the impact of drilling fluids on power section stators to produce the most technologically advanced and efficient down-hole motor equipment in the industry. The elastomer lab carries out extensive development programs for NBR and HNBR rubber compounds that are produced to serve specific drilling environments. The lab also provides drilling fluid compatibility testing and advanced failure analysis services to customers.

Dyna-Drill has developed numerous proprietary formulations of rubber compounds for its products that serve specific drilling environments and can be compounded for the most aggressive drilling fluids and temperatures:


  • Standard high performance compound
  • Good oil and water resistance
  • Excellent dynamic and fatigue properties


  • High performance
  • Excellent dynamic and fatigue properties
  • Improved oil and temperature resistance
  • 50% more power

Oil-based muds

Oil-based muds and muds that contain oil can reduce stator life. The degree of stator damage depends on the specific chemistry of the oils used. Some oils react very little with elastomers while others are highly reactive. Tests for mud-elastomer compatibility may be conducted with the fluids are anticipated. Contact your Dyna-Drill representative for testing in your specific application. Due to severe degradation of elastomers exposed to drilling fluids above 260 degF, Dyna-Drill strongly recommends that elastomer compound selection be based on fluid compatibility testing.

Mud additives

Certain mud additives, such as emulsifiers, corrosion inhibitors, and scavengers, can (even in very small quantities) cause elastomer failure.

Water-based muds

The adhesives used to bond elastomers can undergo hydrolysis when exposed to water, especially at temperatures in excess of 200 degF. Bond-strength degradation can trigger a multitude of problems from minor to catastrophic.

Emulsified systems

Emulsified systems that contain a mixture of oil and water require laboratory testing for a specific application.