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Ervin, TX
David L. Ervin, Houston, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20100319934 | DOWNHOLE TOOLS AND METHODS OF SETTING IN A WELLBORE - A downhole tool disposed in a drillstring includes a bypass valve unit including at least one bypass port, wherein the bypass port is configured to control fluid flow from a central bore of the drillstring to a wellbore annulus, and an activation sub having a frangible obstruction disposed in a central bore thereof and configured to prevent fluid flow to an anchor downhole during a circulation mode, wherein the frangible obstruction is configured to break at a specified fluid pressure in the central bore to allow fluid communication to below. | 12-23-2010 |
Howard Ervin, Spring, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20080238095 | Clamp apparatus for threadedly connected tubulars - A clamp for clamping to two threadedly-connected items, and, in one aspect, two threadedly-connected components of a top drive system. | 10-02-2008 |
| 20100283241 | Clamp Apparatus for Threadedly Connected Tubulars - A clamp for clamping to two tubulars, each of the two tubulars including a component of a top drive system, the two tubulars threadedly connected together, the clamp for inhibiting relative rotation of the two tubulars, each of the two tubulars having at least one tubular projection projecting therefrom, the clamp including a clamp body having an interior surface, a plurality of clamp projections projecting inwardly from the interior surface of the clamp body for holding the at least one tubular projection projecting from each of the two tubulars. | 11-11-2010 |
Howard L. Ervin, Spring, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20090044982 | Top drives with shaft multi-seal - A top drive system for wellbore operations, the top drive system including motor apparatus, a main shaft driven by the motor apparatus, the main shaft having a top end and a bottom end, a quill connected to the main shaft, a gear system interconnected with the quill and the motor apparatus, and a multi-seal system for sealing against the quill. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b). | 02-19-2009 |
Scott Tucker Ervin, Dallas, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20080211263 | Quick Release Cargo Net for Convertible Vehicle - An apparatus for attaching a cargo restraint system to the incorporated rollbar of a motor vehicle with convertible or removable top. By utilizing this existing portion of the vehicle, added cargo retention can be provided for, by attaching an apparatus around said rollbar extending around the rear perimiter of the passenger area. In order to retain maximum driver visibility, said apparatus will consist of netting material similar to that used in fishing, bordered by a heavier material to enable attachment to the vehicle. By utilizing an existing feature of the vehicle, the user is not required to modify any portion of the vehicle in order to attach the invention. Additionally, by not sharing any points of attachment with the existing top, the user is able to utilize the invention with or without the existing convertible top. | 09-04-2008 |
Steve Ervin, Brookshire, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20080314587 | Downhole Tool Having an Extendable Component with a Pivoting Element - An extendable component for use in a downhole tool for traversing subsurface formations includes a drive element that defines an axis and has a distal end, and an abutment that is spaced radially from a distal end of the drive element. A driven element defines a driven element axis, is flexibly coupled to the drive element, and includes a proximal end disposed adjacent to the drive element and a distal end. A tilt arm is coupled to the driven element, is disposed at an angle with respect to the driven element axis, and is configured to engage the abutment. The driven element is moveable between a normal position and a tilted position. A contact head is coupled to the driven element distal end and is adapted to engage the wellbore wall. | 12-25-2008 |
| 20090283266 | APPARATUS AND METHOD FOR FORMATION EVALUATION - A method for acquiring a sample of a virgin fluid from a subsurface formation penetrated by a wellbore surrounded by a layer of contaminated fluid is disclosed. The method includes abutting a first packer against a wall of the wellbore, and extending at least a portion of a second packer beyond the first packer, wherein the second packer is at least partially disposed in the first packer. An inlet to a first flowline is at least partially defined by the first packer, and an inlet to a second flowline is defined by the second packer. The method further includes drawing one of virgin fluid, contaminated fluid and combinations thereof into the first flowline; and drawing virgin fluid into the second flowline. | 11-19-2009 |
| 20100155053 | DOWNHOLE FLUID COMMUNICATION APPARATUS AND METHOD - A probe for establishing fluid communication between a downhole tool and a subterranean formation is provided. The downhole tool is positioned in a wellbore penetrating the subterranean formation. The probe includes a platform operatively connected to the downhole tool, at least one packer operatively connected to the platform, the packer having at least one hole extending therethrough and at least one embedded member disposed in the packer for enhancing the operation of the packer as it is pressed against the wellbore wall. | 06-24-2010 |
| 20100218943 | APPARATUS AND METHOD FOR FORMATION EVALUATION - A method for acquiring a sample of a virgin fluid from a subsurface formation penetrated by a wellbore surrounded by a layer of contaminated fluid is disclosed. The method includes abutting a first packer against a wall of the wellbore, and extending at least a portion of a second packer beyond the first packer, wherein the second packer is at least partially disposed in the first packer. An inlet to a first flowline is at least partially defined by the first packer, and an inlet to a second flowline is defined by the second packer. The method further includes drawing one of virgin fluid, contaminated fluid and combinations thereof into the first flowline; and drawing virgin fluid into the second flowline. | 09-02-2010 |
Steve Ervin, Sugar Land, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20090025926 | Field Joint for a Downhole Tool - A field joint for connecting a plurality of downhole tool modules is disclosed. The modules include a housing and an electrical line. A bulkhead is coupled to a first module that includes a first conduit aperture for receiving an electrical connector assembly. The first electrical connector assembly is releasably coupled to the exterior portion of the first module and includes a first connector having a first end adapted for electrical coupling to an electrical line. A connector block is coupled to the second module that includes a second conduit aperture positioned to substantially face the first conduit aperture when the first and second modules are joined. A second electrical connector is disposed in the second conduit aperture and is electrically coupled to an electrical line such that an electrical contact is established with a second end of the first connector when the first and second modules are joined. | 01-29-2009 |
| 20100200212 | FIELD JOINT FOR A DOWNHOLE TOOL - A field joint for connecting a plurality of downhole tool modules is disclosed. The modules include a housing and an electrical line. A bulkhead is coupled to a first module that includes a first conduit aperture for receiving an electrical connector assembly. The first electrical connector assembly is releasably coupled to the exterior portion of the first module and includes a first connector having a first end adapted for electrical coupling to an electrical line. A connector block is coupled to the second module that includes a second conduit aperture positioned to substantially face the first conduit aperture when the first and second modules are joined. A second electrical connector is disposed in the second conduit aperture and is electrically coupled to an electrical line such that an electrical contact is established with a second end of the first connector when the first and second modules are joined. | 08-12-2010 |