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Title: Drilling jar for use in a downhole network

Abstract

Apparatus and methods for integrating transmission cable into the body of selected downhole tools, such as drilling jars, having variable or changing lengths. A wired downhole-drilling tool is disclosed in one embodiment of the invention as including a housing and a mandrel insertable into the housing. A coiled cable is enclosed within the housing and has a first end connected to the housing and a second end connected to the mandrel. The coiled cable is configured to stretch and shorten in accordance with axial movement between the housing and the mandrel. A clamp is used to fix the coiled cable with respect to the housing, the mandrel, or both, to accommodate a change of tension in the coiled cable.

Inventors:
; ; ; ;
Publication Date:
Research Org.:
IntelliServ, Inc., Provo, UT (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175635
Patent Number(s):
6,991,035
Application Number:
10/653,604
Assignee:
IntelliServ, Inc. (Provo, UT) OSTI
DOE Contract Number:
FC26-01NT41229
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Hall, David R., Fox, Joe, McPherson, James, Pixton, David S., and Briscoe, Michael. Drilling jar for use in a downhole network. United States: N. p., 2006. Web.
Hall, David R., Fox, Joe, McPherson, James, Pixton, David S., & Briscoe, Michael. Drilling jar for use in a downhole network. United States.
Hall, David R., Fox, Joe, McPherson, James, Pixton, David S., and Briscoe, Michael. Tue . "Drilling jar for use in a downhole network". United States. doi:. https://www.osti.gov/servlets/purl/1175635.
@article{osti_1175635,
title = {Drilling jar for use in a downhole network},
author = {Hall, David R. and Fox, Joe and McPherson, James and Pixton, David S. and Briscoe, Michael},
abstractNote = {Apparatus and methods for integrating transmission cable into the body of selected downhole tools, such as drilling jars, having variable or changing lengths. A wired downhole-drilling tool is disclosed in one embodiment of the invention as including a housing and a mandrel insertable into the housing. A coiled cable is enclosed within the housing and has a first end connected to the housing and a second end connected to the mandrel. The coiled cable is configured to stretch and shorten in accordance with axial movement between the housing and the mandrel. A clamp is used to fix the coiled cable with respect to the housing, the mandrel, or both, to accommodate a change of tension in the coiled cable.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 31 00:00:00 EST 2006},
month = {Tue Jan 31 00:00:00 EST 2006}
}

Patent:

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  • A downhole drilling system is disclosed in one aspect of the present invention as including a drill string and a transmission line integrated into the drill string. Multiple network nodes are installed at selected intervals along the drill string and are adapted to communicate with one another through the transmission line. In order to efficiently allocate the available bandwidth, the network nodes are configured to use any of numerous burst modulation techniques to transmit data.
  • A high-speed downhole network providing real-time data from downhole components of a drilling strings includes a bottom-hole node interfacing to a bottom-hole assembly located proximate the bottom end of a drill string. A top-hole node is connected proximate the top end of the drill string. One or several intermediate nodes are located along the drill string between the bottom-hole node and the top-hole node. The intermediate nodes are configured to receive and transmit data packets transmitted between the bottom-hole node and the top-hole node. A communications link, integrated into the drill string, is used to operably connect the bottom-hole node,more » the intermediate nodes, and the top-hole node. In selected embodiments, a personal or other computer may be connected to the top-hole node, to analyze data received from the intermediate and bottom-hole nodes.« less
  • A repeater is disclosed in one embodiment of the present invention as including a cylindrical housing, characterized by a proximal end and a distal end, and having a substantially cylindrical wall, the cylindrical wall defining a central bore passing therethrough. The cylindrical housing is formed to define at least one recess in the cylindrical wall, into which a repeater is inserted. The cylindrical housing also includes an annular recess formed into at least one of the proximal end and the distal end. An annular transmission element, operably connected to the repeater, is located in the annular recess. In selected embodiments,more » the annular transmission element inductively converts electrical energy to magnetic energy. In other embodiments, the annular transmission element includes an electrical contact to transmit electrical energy directly to another contact.« less
  • The present invention includes an element for use in an inductive coupler in a downhole component. The element includes a plurality of ductile, generally U-shaped leaves that are electrically conductive. The leaves are less than about 0.0625" thick and are separated by an electrically insulating material. These leaves are aligned so as to form a generally circular trough. The invention also includes an inductive coupler for use in downhole components, the inductive coupler including an annular housing having a recess with a magnetically conductive, electrically insulating (MCEI) element disposed in the recess. The MCEI element includes a plurality of segmentsmore » where each segment further includes a plurality of ductile, generally U-shaped electrically conductive leaves. Each leaf is less than about 0.0625" thick and separated from the otherwise adjacent leaves by electrically insulating material. The segments and leaves are aligned so as to form a generally circular trough. The inductive coupler further includes an insulated conductor disposed within the generally circular trough. A polymer fills spaces between otherwise adjacent segments, the annular housing, insulated conductor, and further fills the circular trough.« less
  • A cable connector is described for connecting ends of first and second cables each having an inner flexible conductor and an outer covering which provides tensile strength to the cables. The cable connector consists of: (a) a first housing having a male portion and a first through passageway forming a first aperture for receiving the first cable; (b) a second housing having a female portion for receiving the male portion and having a second through passageway forming a second aperture for receiving the second cable; (c) attachment means for interconnecting the first and second housings; (d) biasing means for preventingmore » inadvertent disengagement of the first and the second housings; (e) the first and second passageways defining an elongate conductor connection chamber having a central longitudinal chamber axis; (f) contact means positioned within the connection chamber for connecting the inner flexible conductors of the first and second cables; (g) an elastomeric boot encompassing the contact means for sealing the conductor connection from the environment within the connection chamber; and (h) first and second securing means each connected to the first and the second cables, respectively, for engaging the first and second housings, respectively, and preventing tensile forces imposed on the cables from being transmitted to the inner flexible conductors positioned within the connection chamber, whereby the first and second securing means are both radially movable within the connection chamber.« less