Company Filing History:
2 out of 10,181 
1 out of 4 
Years Active: 2000-2001
Title: Demosthenis Georgeou Pafitis: Innovator in Thixotropic Materials and Drilling Technologies
Introduction
Demosthenis Georgeou Pafitis is a notable inventor based in Houston, TX (US). He holds a total of 3 patents that showcase his contributions to the fields of thixotropic materials and drilling technologies. His innovative work has significant implications for oilwell applications and drilling efficiency.
Latest Patents
One of Pafitis's latest patents involves thixotropic materials. This settable thixotropic material comprises a thixotrope and a settable substance, capable of gelling reversibly in less than 60 seconds. The thixotrope typically includes fine-grained clay, particularly smectite clays like hectorites. Synthetic smectite type clay colloids, such as Laponite RDS, have shown promising results. The settable material often consists of cement, especially Portland cement. This thixotropic material is particularly useful in oilwell applications, including plugging lost circulation zones, repairing damaged casing, and limiting annular gas migration. It also finds application in the completion of horizontal wells with slotted or pre-drilled liners.
Another significant patent by Pafitis is for non-elastomeric stator and downhole drilling motors. This invention features a drilling motor that includes a non-elastomeric stator and rotor designed for negative or zero interference. The negative interference is determined by the largest solid particle expected to pass through the motor, ensuring efficient operation. Stators are crafted from stainless steel and fabricated in sections, which are aligned and welded to form a conventional motor stator.
Career Highlights
Throughout his career, Pafitis has worked with prominent companies in the industry, including Schlumberger Technology Corporation and Schlumberger Technology Company. His experience in these organizations has contributed to his expertise in drilling technologies and materials science.
Collaborations
Pafitis has collaborated with notable professionals in his field, including Vernon E Koval and Stephen N Davies. These collaborations have likely enriched his work and expanded the impact of his inventions.
Conclusion
Demosthenis Georgeou Pafitis is a distinguished inventor whose work in thixotropic materials and drilling technologies has made a significant impact on the industry. His innovative patents and career achievements reflect his dedication to advancing technology