| PDTI Holdings, LLC Patent applications |
| Patent application number | Title | Published |
|---|
| 20120024601 | METHODS OF USING A PARTICLE IMPACT DRILLING SYSTEM FOR REMOVING NEAR-BOREHOLE DAMAGE, MILLING OBJECTS IN A WELLBORE, UNDER REAMING, CORING, PERFORATING, ASSISTING ANNULAR FLOW, AND ASSOCIATE METHODS - A particle impact drilling system and method are described. In several exemplary embodiments, the system and method may be a part of, and/or used with, an apparatus or system, methods, to excavate a subterranean formation. The system can including, for example, removing near-borehole damage, casing, window milling, fishing, drilling with casing, under reaming, coring, perforating, effective circulatory density management, assisted annular flow, and directional control. Embodiments of associated systems and methods are also included. | 02-02-2012 |
| 20100294567 | Impactor Excavation System Having A Drill Bit Discharging In A Cross-Over Pattern - A system for use in excavating a wellbore that includes a drill string and attached drill bit that has nozzles that are in fluid communication with the drill string. The system receives pressurized slurry of fluid and impactor particles and directs the slurry at a subterranean formation from the nozzles to form the wellbore. Discharge streams are formed from the slurry exiting the nozzles, the discharge streams impact and fracture the formation to remove material. The nozzles are oriented so that the streams excavate in the middle and periphery of the borehole bottom. The nozzles can be oriented to form frusto-conical spray patterns when the bit is rotated, wherein the spray patterns can intersect or overlap. | 11-25-2010 |
| 20100243330 | Impact Excavation System and Method With Injection System - A system and method according to which at least one vessel injects a suspension of liquid and a plurality of impactors into a formation to remove at least a portion of the formation. | 09-30-2010 |
| 20100155063 | Particle Drilling System Having Equivalent Circulating Density - An injection system and method is described. In several exemplary embodiments, the injection system and method may be a part of, and/or used with, a system and method for excavating a subterranean formation. The system and method include a low density material injection to lower the circulating fluid equivalent circulating density. | 06-24-2010 |
