SESL Downhole Drilling Motors
Manned by first generation Directional Drillers

Hallmark Oil And Gas Ltd. (SESL) offers a complete line of quality downhole mud motors ranging from 4 ½”, 6 ¾”, 9 5/8” and 11 ¼” outer diameter for drilling various hole sizes. Our mud motors have a proven history of reliable performance and have been used extensively in both Offshore and Onshore applications. SESL mud motor uses different rotor and stator configurations to provide optimum performance for the desired drilling operation.

We have series of mud motors with different number of stages and lobe ratio configuration that delivers different rotational speed and torque for any kind of directional drilling application. Our mud motor is configured to have an adjustable bend on it enabling the driller to kick-off the well in the required direction.The amount of bend is determined by the build-up rate needed to reach the target zone. These adjustable bend housing motors provides continuous bit rotation, while selective rotation of the drillstring controls wellbore trajectory. SESL downhole drilling motors are very effective for kickoffs, course correction, angle control and sidetracking. Our steerable mud motors can be matched with various types of bit such as PDC, roller cone or natural diamond.

With latest technology and tools, a wide range of possible configurations permits the use of Even Rubber Thickness (ERT), National Oil Varco (NOV) and PowerPLUS motors in many drilling applications such as:

• Conventional directional drilling
• Steerable and horizontal drilling
• Short/intermediate radius drilling
• Performance drilling
• Extended reach drilling
• HPHT wells
• Pilot hole drilling
• Slimhole drilling
• Hole opening
• Hole spudding
• Medium radius drilling
• Vertical drilling

Hallmark Oil And Gas Ltd. Energy PowerPLUS and NOV motors works perfectly under a wide of downhole conditions. There sealed bearings and rugged bearing packs provides for reliable use for all drilling mud types. These series of motors are the most powerful and reliable in the industry today. They can consistently achieve over 200 hours operation downhole.

Even Rubber Thickness (ERT) power sections dramatically improve motor rates of penetration by providing up to 100% more power than conventional power sections of the same length. The tremendous power and torque capacity of SESLERTs also allow them to more efficiently transfer power to the bit. This efficiency has produced ROPs in short ERT power sections up to twice those of extended length conventional power sections. The dramatic improvement in power and torque is a result of applying an even thickness of rubber to an internally machined, one-piece stator contour.

Features of the ERT Motors

ERT power is up to twice that of conventional power sections and also permits the use of shorter motors without compromising ROP, providing:

• Improved motor directional performance
• Improved MWD/LWD measurement quality
• Increased Rotary Steerable Tool ROP
• An aggressive power section matched with rotor and stator based on downhole operating temperature.
• Very good RPM and better torque output with increased bit life.

For more information about our downhole drilling motors, please call us or send us an e-mail.