General Electric Company

Sperry-sun, Inc.

Nl Sperry Sun, Inc.

Joshua M Jackson

Roy H Cullen

Jim Witovek, Jr

Terry V Jones

Vernon E Koval

A system for providing a fluid communication path between the surface and a downhole location in a borehole includes a capillary tubing which is secured to the outside of a production pipe string and which is run into the borehole on the pipe string. The tubing is sized to accommodate the downhole injection of treating chemicals into the producing fluid stream, primarily for corrosion control. In many instances it is desirable to make downhole pressure measurements in a producing well. A small solid slickline with an attached plunger is pumped down the chemical injection tubing into a chamber at the bottom of the tubing. The slickline substantially restricts the cross-sectional area of the injection tubing to accommodate accurate direct pressure measurements at the remote downhole location.

Borehole pressure measuring system

A device for protecting and securing small diameter tubular members along a pipe string in a wellbore is disclosed. The protector is designed to fit about the joints of connecting pipe sections and comprises a sleeve assembly capable of being arranged and locked about a pipe joint. The sleeve assembly preferably comprises a plurality of symmetrical, most preferably semi-cylindrical, sleeve members having interfitting longitudinal end portions, preferably held by hinge pins in circular arrangement about a pipe joint. At least one longitudinal channel is formed, preferably with a pair of parallel, longitudinal ridges on the interior surface of the sleeve assembly to receive and hold therein a small diameter tubular member. The sleeve assembly is further characterized by shoulder members spaced sufficiently far apart to bracket the greater diameter pipe joint to prevent longitudinal displacement of the sleeve assembly with relation to the pipe string and joint. Preferably, the channel includes a biasing device, most preferably a resilient or elastomeric material, to bias the tubular member against the pipe joint to prevent longitudinal and transverse movement relative thereto. Preferably, the ends of the sleeve members are formed to project inwardly, most preferably at 45 degrees, to provide both annular shoulder members and a smoother transition between the end of the sleeve assembly and the adjacent pipe section to prevent hanging in the borehole.

Tubing protector

In situations where it is necessary to directionally drill boreholes from the surface in a substantially horizontal attitude, such as for pipeline river crossings, the precise directional parameters of drilling become critical. A system of tools for efficiently accommodating the precise directional steering of the drilling includes a continuous electrical communications path within a drill string, which path provides steering data at the surface for controlling the drilling operation. A side entry sub is positioned in the tool string at its upper end. A cable system is employed in each pipe section placed in the string and includes provisions for breaking and making connections with the cable without withdrawing the cable from the pipe string. A steering tool is fixedly positioned in the drill pipe near the drill bit and is not normally withdrawn from the hole except with the drill bit.

Continuous borehole telemetry system and method

An apparatus for feeding and withdrawing sections of electrical cable having substantially rigid terminal connectors at the ends of each section, wherein means are provided for preventing excessive bending of the cable terminal connectors and the cable conductor at an interface between the conductor and connectors to prevent damage thereto during feeding and removal.

Electrical cable feeding and removing apparatus

A reeling apparatus for supplying, receiving and storing a section of electrical cable having substantially rigid terminal connectors at the ends of the section, wherein apparatus are provided for releasably securing at least one of the electrical cable terminal connectors with a rotatable reel of the apparatus for rotation therewith as the electrical cable is wound on and unwound from the reel, and for releasing the releasably secured terminal connector from the reel upon the unwinding of the cable therefrom to thereby release the entire section of the cable from the reel.

Electrical cable reeling apparatus

A method and apparatus for handling electrical cable sections having substantially rigid connectors at the end of each section, wherein the entire fixed length of one or more sections of cable are positioned in and removed from a well bore by rapidly inserting and withdrawing a section of cable employing a rig floor assembly in combination with a cable supply and storage apparatus which are respectively provided with means for preventing excessive bending of the cable terminal connectors and the cable conductor at an interface between the conductor and connectors to prevent damage thereto during insertion and removal.

Growing community of inventors

Houston, TX, United States of America

Joshua M Jackson