Patent application number | Description | Published |
20090278419 | METHODS FOR PRODUCING EVEN WALL DOWN-HOLE POWER SECTIONS - Embodiments of the present invention provide methods for manufacturing an even-wall rotor or stator that do not suffer from drawbacks of the prior art. Even-wall rotors or stators produced according to those methods are also provided. In one embodiment, a method for manufacturing a rotor or stator for use in a mud motor is provided. The method includes providing a vacuum chamber; providing a metal electrode at least partially disposed in the vacuum chamber; providing a mold disposed in the vacuum chamber; and melting a portion of the electrode with a direct current arc, the molten metal flowing into the mold ring. | 11-12-2009 |
20140158295 | Erosion Resistant Wellbore Screen and Associated Methods of Manufacture - A method of manufacturing or surface treating a wire wrapped screen for use in a wellbore improves the erosion resistance of the wire-wrapped screen. The wire-wrapped screen can be disposed on an axle positioned in a chamber containing a source of erosion resistant surface coating. The coating is then deposited on the exterior of the wire-wrapped screen using a deposition process, such as physical vapor deposition or thermal spraying. Alternatively, a spray system proximate the wire-wrapped screen can have a deposition nozzle to coat the exterior surface of the screen with an elastomer coating by spraying an elastomer. In additional embodiments, the wire for the wire-wrapped screen can first be treated for erosion resistance and then wound about a mandrel to form the wire-wrapped screen. | 06-12-2014 |
20140216722 | Hard Surfacing Non-Metallic Slip Components for Downhole Tools - A slip component for a downhole tool has a bearing surface that is hard surface treated. The slip component, which can be a slip or other component of a slip mechanism used on a packer, bridge plug, or other downhole tool, is composed of a non-metallic base material, such as plastic, composite, or ceramic. To hard surface treat the slip component, at least the bearing surface is positioned relative to an ion sputtering apparatus. An intermediate layer is first bonded onto the bearing surface by ion sputtering an intermediate material onto the non-metallic base material of the slip component. Then, the bearing surface of the slip component is positioned relative to an electrosparking apparatus, which has an electrode composed of a selected external material for depositing on the slip component. Using the electrosparking apparatus, an external layer is bonded at least on the bearing surface. | 08-07-2014 |
20140216723 | Hard Surfacing Metallic Slip Components for Downhole Tools - A slip component for a downhole tool has a bearing surface hard surface treated. The slip component, which can be a slip or other component of a slip mechanism used on a packer, bridge plug, or other downhole tool, is composed of a metallic base material such as magnesium, aluminum, an aluminum alloy, or a magnesium alloy. To hard surface treat the slip component, at least the bearing surface is positioned relative to an electro sparking apparatus. Using the electrosparking apparatus, an external layer is bonded at least on the bearing. In a further embodiment, an intermediate layer can be first bonded onto at least the bearing surface by ion sputtering an intermediate material onto the metallic base material of the slip component. Then, an external layer can be bonded at least on the intermediate layer by electrospark deposition. | 08-07-2014 |
20140375167 | METHODS FOR PRODUCING EVEN WALL DOWN-HOLE POWER SECTIONS - Embodiments of the present invention provide methods for manufacturing an even-wall rotor or stator that do not suffer from drawbacks of the prior art. Even-wall rotors or stators produced according to those methods are also provided. In one embodiment, a method for manufacturing a rotor or stator for use in a mud motor is provided. The method includes providing a vacuum chamber; providing a metal electrode at least partially disposed in the vacuum chamber; providing a mold disposed in the vacuum chamber; and melting a portion of the electrode with a direct current arc, the molten metal flowing into the mold ring. | 12-25-2014 |
20150060045 | PIPE HANDLING SYSTEM - A pipe handling system for locating a pipe joint in a joining assembly that includes an internal joining tool and an external joining tool is provided. The system includes a gripper configured to grip a surface of the pipe joint; an elevator configured to pick up the pipe joint and position the pipe joint adjacent a string of pipe disposed in the external joining tool; and a deployment assembly coupled to the gripper, wherein the deployment assembly includes a cable that is used to position the internal joining tool inside the pipe joint. | 03-05-2015 |