Paul Nmi Nelson

US Patent:

40995615, Jul 11, 1978

Filed:

May 11, 1977

Appl. No.:

5/795949

Inventors:

Paul M. Nelson - Houston TX

Assignee:

Wilson Industries, Inc. - Houston TX

International Classification:

E21B 3303

US Classification:

166 551

Abstract:

An overshot cutter includes concentric inner and outer members, the latter having a radially flexible portion thereon. A gripper for gripping a portion of a drill string is mounted on the flexible portion. The members have inclined surfaces which, when engaged, prevent radial flexing of the inner member as the overshot cutter is lowered over the drill string. When the gripper encounters an obstacle the outer member moves relative to the inner member to axially space apart the surfaces. The inner member and the gripper thereon thereby move radially outwardly to clear the obstruction. In a first embodiment, a spring imposes a biasing force on the inner member to maintain engagement between the surfaces. When an obstruction is encountered, continued downstring advancement of the outer with respect to the inner member disengages the surfaces to define the radial clearance and for shorten the spring to store energy to re-establish contact of the surfaces after the obstruction is passed. In a second embodiment a dowel on the outer member engages a groove on the inner member so that rotation of the outer relative to the inner member disposes the dowel in the groove to space the surfaces apart and define the radial clearance.

US Patent:

41411536, Feb 27, 1979

Filed:

Aug 3, 1977

Appl. No.:

5/821461

Inventors:

Paul M. Nelson - Houston TX

Assignee:

Wilson Industries, Inc. - Houston TX

International Classification:

G01B 524
E21B 47022

US Classification:

33286

Abstract:

A bottom hole survey apparatus is characterized by a survey instrument having a reference line therein, the instrument being receivable by the engagement of flanges provided along the instrument into keyways provided on the interior of a non-magnetic instrument barrel. When engaged, the reference line of the survey instrument is disposed in a predetermined angular relation with respect to the barrel. The barrel has means provided on the exterior thereof for receiving a visual sighting element thereon, the sighting element being in a predetermined angular relationship with respect to the reference line. At least one non-magnetic spacer element is connectable to the barrel, the spacer element being provided with an adapter having a T-shaped head thereon which is received within a corresponding T-shaped groove provided at the lower end of the instrument. A mule shoe element having a slot therein is adjustably connectable to the lower end of the spacer, the mule shoe slot being adapted to receive a second visual sighting element such that when the sighting elements are aligned the reference line within the instrument is within a predetermined axial alignment with the mule shoe slot. A torque transmitting sub element including a plurality of axially spaced arrays of circumferentially disposed ridges engageable with an array of circumferentially disposed grooves may be connected between the spacer and the mule shoe.

US Patent:

41301625, Dec 19, 1978

Filed:

Jul 1, 1977

Appl. No.:

5/812063

Inventors:

Paul M. Nelson - Houston TX

Assignee:

Wilson Industries, Inc. - Houston TX

International Classification:

E21B 1700
E21B 4700

US Classification:

166243

Abstract:

A sleeve for supporting a radially inwardly extending key disposed within the interior of a drilling sub is characterized by a substantially cylindrical body member having a plurality of ribs extending either radially inwardly or radially outwardly therefrom to define a plurality of fluid conducting channels. A plurality of threads is provided on the radially outer surface of the sleeve adjacent the first axial end thereof. A radially extending notch divides the threads into a first and second set of threads. With the first and second set of threads engaged with a plurality of threads disposed on the interior of the sub, a threaded bolt is disposed in an axially extending bore provided within the sleeve, to thereby lock the sleeve in position within the sub.

US Patent:

41355776, Jan 23, 1979

Filed:

May 11, 1977

Appl. No.:

5/795950

Inventors:

Paul M. Nelson - Houston TX
Carl P. Hutchinson - Houston TX

Assignee:

Wilson Industries, Inc. - Houston TX

International Classification:

E21B 2300

US Classification:

166241

Abstract:

A centralizer apparatus for guiding, within a well bore, a tool having a radially outwardly extending member thereon includes a sleeve concentrically disposed about the tool. The sleeve has a downwardly opening, substantially J-shaped groove therein sized to receive the radially outwardly extending member on the tool about which the sleeve is disposed. The J-groove has a first, closed, axially-extending slot portion and a second, axially-extending slot portion opening at the downstring end of the sleeve. The first and second axially extending slot portions of the J-groove are spaced circumferentially apart and communicate through a substantially transverse slot portion. An outer protective jacket is provided about the sleeve. A centralizer guide depends from the lower end of the jacket to contact the walls of the bore and maintain the tool centrally with respect thereto.

US Patent:

42079250, Jun 17, 1980

Filed:

Nov 7, 1977

Appl. No.:

5/849250

Inventors:

Paul M. Nelson - Houston TX

Assignee:

Wilson Industries, Inc. - Houston TX

International Classification:

F15D 102

US Classification:

138 44

Abstract:

A reversible baffle plate for receiving and supporting a bottom hole survey apparatus on the interior of a directional drilling string is characterized by concentrically disposed inner and outer members supported one from the other by a plurality of webs. The webs cooperate with the inner and outer members to define a plurality of flow passages through the baffle plate. The first and second axial ends of the inner tubular member are each adapted to receive and support the lowermost axial end of a bottom hole survey apparatus.

US Patent:

42890217, Sep 15, 1981

Filed:

Aug 16, 1979

Appl. No.:

6/067181

Inventors:

Paul M. Nelson - Houston TX

Assignee:

Wilson Industries, Inc. - Houston TX

International Classification:

G01L 524

US Classification:

7386225

Abstract:

A tongs having gripping jaws and a handle for applying an actuating force thereto is characterized by a sensing unit mounted in a force-receiving relationship with the handle. The sensing unit is responsive to a compression or tension force imposed thereon when an actuating force is applied to the handle to generate a signal functionally related to the magnitude of the actuating force. A readout device may be connected to the sensing unit and responsive to the signal generated therefrom to provide a visual indication in any predetermined units of the magnitude of the force imposed on the handle or the torque imposed by the jaws resulting therefrom.

US Patent:

62437135, Jun 5, 2001

Filed:

Aug 24, 1998

Appl. No.:

9/139290

Inventors:

Paul E. Nelson - Woodstock MD
Christopher H. Anderson - Baltimore MD
Ronald M. Whitman - Washington DC
Paul C. Gardner - Escondido CA
Mark R. David - Sunnyvale CA

Assignee:

Excalibur Technologies Corp. - Vienna VA

International Classification:

G06F 1730

US Classification:

707104

Abstract:

A system, method and software product provides for true multimedia document retrieval by receiving multimedia queries containing various types of data, such as text keywords, images, audio or other data types, and processing such queries against a multimedia index that commonly indexes multimedia documents, including any of their multimedia components. The unified index allows query retrieval by evaluation of a query structure which can contain any of the multimedia data types, and operators which can be evaluated on any of these data types. The system indexes multimedia documents by separating them into their multimedia components, and processing each component into a number of tokens. The tokens are stored in the index along with information identifying the documents that contain the token, and reference data describing the position of the token within the documents, and any other data extracted from the multimedia component of the document, such as color, texture, luminance, recognized speech, or the like. During retrieval, a query is decomposed into multimedia components, which are then converted to a set of tokens and query structure including mathematical and proximity operators.