Patents Assigned to Baker Hughes Inc.
  • Patent number: 5592991
    Abstract: A one-trip system for milling a window using a whipstock is disclosed. The whipstock can be set on a packer or anchor which can be an electric line-type packer which, without modifications, can be set with the hydraulic mechanism disclosed so as to avoid the need for running a wireline rig. The assembly of the packer or anchor and whipstock is run into the wellbore in a single trip, with a mill or mills capable of milling a window. At the conclusion of the milling, the mill or mills are retrieved. Thereafter, a retrieving tool is attached to the whipstock and facilitates a release of the setting tool from the packer so that the setting tool and the whipstock are retrieved together.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: January 14, 1997
    Assignee: Baker Hughes Inc.
    Inventors: Jeffrey J. Lembcke, Henry J. Jordan, Jr.
  • Patent number: 5582258
    Abstract: A drill bit for boring an earth formation is designed for rotation in a given direction. The bit body includes an operating face with at least one cutting element formed thereon. A cutting surface formed on the cutting element faces in a forward direction with respect to the direction of rotation. A cutting edge is formed on the cutting surface and is embedded in the earth formation during boring so that the formation is received against a portion of the cutting surface. The cutting element creates successive formation chips during boring which grow in length during bit rotation. A chip breaker formed adjacent the cutting surface imparts a strain to the chip by bending and/or twisting the chip and thereby increases the likelihood that it will break off. In one aspect, fluid flows in a fluid course formed in front of the cutting element during boring. Twisting increases the surface area of the chip presented to fluid in the fluid course which further increases the likelihood that the chip will break.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: December 10, 1996
    Assignee: Baker Hughes Inc.
    Inventors: Gordon A. Tibbitts, Wayne R. Hansen
  • Patent number: 5533582
    Abstract: A full cutting element including a substantially cylindrical backing and cutter mounted thereon is cut generally along the length thereof to produce a pair of semicylindrical partial cutting elements. In the case of an unused cutting element, each partial cutting clement is mounted on a different semicylindrical tungsten carbide base to produce a substantially cylindrical unit which is mounted on a bit using a low temperature braze. In the case of a used full cutting element, the cutting clement is cut to separate the worn portion from the remainder of the bit and only the unused portion is used to form a cylindrical unit with a corresponding semicylindrical tungsten carbide base. In another aspect, a partial cutting element is received in a pocket formed on a bit body. The pocket includes a pair of opposed side surfaces which substantially flushly abut the curved surfaces of the backing on the partial cutter.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: July 9, 1996
    Assignee: Baker Hughes, Inc.
    Inventor: Gordon A. Tibbitts
  • Patent number: 5469062
    Abstract: A wave propagation measurement-while-drilling system is used to determine selected formation and borehole properties. One or more transmitter-receiver pairs are utilized with the transmitter components operating at one or more frequencies to provide a measured data set. A model relating the borehole instrument response to a wide range of formation and borehole conditions is also utilized. Inversion techniques are employed to determine selected formation and borehole parameters of interest and to simultaneously correct the selected formation parametric measurements for the adverse effects of the borehole and formation bed boundaries thereby avoiding serial type corrections which can yield erroneous results in certain frequency ranges.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: November 21, 1995
    Assignee: Baker Hughes, Inc.
    Inventor: Wallace H. Meyer, Jr.
  • Patent number: 5441121
    Abstract: A method for making an earth boring drill bit which includes an outer shell having an external surface adapted to carry cutting elements and a unitary shank and bit core which is fitted into the outer shell. The shell and bit core are threadably engaged with one another or are interferingly engaged. The shell and bit core may be welded, secured with brazing alloys or with high temperature adhesives. In one embodiment, a ridge formed on the shank is received in a groove formed on an interior surface of the shell to prevent relative rotational movement of the shank and shell during drilling. In another embodiment, the shell is formed using matrix infiltration techniques. After the shell is formed,it is heated to braze cutters thereto. While still hot from the brazing process, the shell and shank are fitted together. After cooling the shell contracts to form heat shrink connection between the shell and the shank.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: August 15, 1995
    Assignee: Baker Hughes, Inc.
    Inventor: Gordon A. Tibbitts
  • Patent number: 5431759
    Abstract: An electrical cable and a method for manufacturing the electrical cable are provided in which a plurality of insulated conductors have a protective jacket extruded thereabout, the protective jacket having an exterior ribbed surface which includes a plurality of longitudinally extending ribs between which extend a plurality of thermal expansion voids. The protective jacket is formed from a thermally set elastomeric material which is partially cured, and then a protective exterior armor is helically wrapped around the exteriorly ribbed surface of the elastomeric, protective jacket. Then, the electric cable is heated to an elevated temperature for a period of time which is sufficient for fully curing the elastomeric protective jacket formed therein.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: July 11, 1995
    Assignee: Baker Hughes Inc.
    Inventor: David H. Neuroth
  • Patent number: 5423387
    Abstract: The apparatus and method of the present invention facilitate the initiation of lateral bores from a main wellbore in a completed well having a packer and a tubing string. The preferred method involves setting a plug, which may be removed, through the tubing string, followed by a layer of sand, followed by a layer of cementitious material or other material that becomes hard. The cementitious material is drilled from the end of the production tubing by means of equipment passed through the length of the cementitious material. This allows running in with another packer or anchoring device to be located within the newly created bore in the cementitious material. The sidetracking device is secured to the anchoring device and oriented. The milling then proceeds with a high-efficiency milling tool that creates a window through the cementitious material and outer casing. A milling assembly can then be used to complete the window and begin the lateral bore.
    Type: Grant
    Filed: June 23, 1993
    Date of Patent: June 13, 1995
    Assignee: Baker Hughes, Inc.
    Inventor: Gerald D. Lynde
  • Patent number: 5417288
    Abstract: A liner hanger assembly structurally interconnects a casing within a bore hole and a tubular liner suspended from the casing. The hanger body includes a plurality of circumferentially spaced piston bores. A plurality of slips are provided circumferentially about, the hanger body for gripping engagement with an internal surface of the casing. A plurality of pistons are each housed within a respective piston bore and are movably responsive to internal pressure within the hanger body. A sleeve is axially movable with respect to the hanger body in response to axial movement of the plurality of pistons. The sleeve is interconnected with each of the plurality of slips to cause radially outward movement of the slips in response to movement of the pistons. The liner hanger assembly has a high fluid pressure rating for ensuring reliable gripping engagement with the casing, yet creates a comparatively low fluid restriction in the annulus between the casing and the liner.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: May 23, 1995
    Assignee: Baker Hughes, Inc.
    Inventors: George J. Melenyzer, Janice Norris, George Givens
  • Patent number: 5415237
    Abstract: The invention relates to a control system for a subsurface safety valve (SSV). A pressure-balance feature is introduced such that the control system components are unaffected by the depth of placement of the SSV. Through the use of this feature, the standard hydraulic control system used for surface components can also be used for an SSV regardless of its depth of installation. In another feature of the invention, a shuttle valve is provided so that each time the SSV is stroked, a volume of control fluid is purged into the annulus. One embodiment of the shuttle valve may or may not be sensitive to annulus pressure and employs annulus pressure as an aid to stroking the shuttle valve upon application of surface control pressure to assist in actuation of the SSV, while at the same time providing for a purge of a controlled volume of fluid.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: May 16, 1995
    Assignee: Baker Hughes, Inc.
    Inventor: Scott C. Strattan
  • Patent number: 5404944
    Abstract: A downhole tool for making up threaded connections between lower and upper tubulars within a well bore includes a lower anchoring member, an upper anchoring member, and a drive member including a movable piston assembly. A plurality of straight splines on the piston assembly and mating splines on a housing rotatable with the lower anchoring member allow axial movement while preventing rotational movement of the piston assembly with respect to the lower anchoring member during the tool driving stroke. The helical drive component on the piston assembly and a mating driven component rotatable with the upper anchoring member cooperate to rotate the upper anchoring member and thus the upper tubular to make up the downhole threaded connection. According to the method of the present invention, the upper and lower anchoring members are each secured to a respective tubular, and fluid pressure is increased to drive the piston assembly downward, thereby rotating the upper tubular.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: April 11, 1995
    Assignee: Baker Hughes, Inc.
    Inventors: Gerald Lynde, Ralph D. Wright, Richard A. Sukup, Patrick R. Brand
  • Patent number: 5395536
    Abstract: A process for removing carboxylic acids from aqueous solutions using a composition of a polyaluminum chlorohydrate and a cationic polyelectrolyte is described. After or during the initial contact of the aqueous solution with the composition, an organic liquid may optionally be added after which separation into an aqueous phase and an organic phase occurs whereby the organic acids are removed in the organic phase. The preferred polyaluminum chlorohydrate is aluminum chlorohydrate, and the preferred cationic polyelectrolyte is a high molecular weight poly(dimethyl diallyl) ammonium chloride.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: March 7, 1995
    Assignee: Baker Hughes, Inc.
    Inventors: William M. Brown, Maria Trevino
  • Patent number: 5363921
    Abstract: A wireline pull disconnect is enclosed which operates using a system of trapped collets. The collets are releasable by a pulling force which is resisted by one or more Belleville washers. Upon the exertion of a predetermined force which will flatten the Belleville washers, sufficient movement of the components of the pull disconnect occurs so that the collets become liberated and disconnection is effected.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: November 15, 1994
    Assignee: Baker Hughes, Inc.
    Inventor: Luis E. Mendez
  • Patent number: 5347004
    Abstract: A mixture of amines made by reacting an amine compound with an aldehyde compound has been found to reduce the levels of H.sub.2 S in liquid or gaseous hydrocarbon streams. At least one of the compounds must have an alkoxyalkylene radical. In one embodiment of the invention, the mixture of amines contains at least one hexahydrotriazine compound of the formula: ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are independently selected from the group consisting of hydrogen and an alkyl radical, including substituted alkyl radicals, of 1 to 5 carbon atoms; where at least one of the groups is an alkoxyalkylene group. In another embodiment of the invention, the amine mixture may contain other by products, such as the monomers which make up the hexahydrotriazine, with or without the hexahydrotriazine being present. These materials are selective to the reduction of H.sub.2 S levels in hydrocarbon or aqueous streams in the presence of CO.sub.2 which does not compromise their performance.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: September 13, 1994
    Assignee: Baker Hughes, Inc.
    Inventors: Gordon T. Rivers, Richard L. Rybacki
  • Patent number: 5318122
    Abstract: In accordance with the present invention, a plurality of methods and devices are provided for solving important and serious problems posed by lateral (and especially multilateral) completion in a wellbore including methods and devices for sealing the junction between a vertical and lateral well. Methods are disclosed wherein deformable devices are utilized to selectively seal the juncture between the vertical and lateral wells. Such deformable devices may comprise (1) an inflatable mold which utilizes a hardenable liquid (e.g., epoxy or cementious slurry) to form the seal; (2) expandable memory metal devices; and (3) swaging devices for plastically deforming a sealing material.
    Type: Grant
    Filed: August 7, 1992
    Date of Patent: June 7, 1994
    Assignee: Baker Hughes, Inc.
    Inventors: Douglas J. Murray, Frederick T. Tilton
  • Patent number: 5262130
    Abstract: A catalyst support for use in promoting oxidation reactions composed of metal particles is described. The metal particles are selected from the group of aluminum, tantalum, titanium, tungsten, niobium and mixtures thereof, where aluminum is preferred. The metal particles may have a rough diameter of from 0.02 to 10 mm. The particles may be in the form of spheres, shavings, irregular granules and the like. When the catalyst support is to be used in a tubular reactor, the ratio of the diameter of the reactor to the diameter of the catalyst may range from 1.1 to 200:1. The metal catalyst supports are inert in the reaction and give excellent uniformity in heat distribution throughout the catalyst bed. In oxidation reactions, the catalyst support may bear a metal oxide catalyst to give good results. The particulate catalyst support bearing the active catalyst may also be compressed to inhibit channelling and to help provide higher yield to the desired product.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: November 16, 1993
    Assignee: Baker Hughes Inc.
    Inventors: Charles L. Kissel, Charles M. Finley
  • Patent number: 5255074
    Abstract: A concentration measuring apparatus is provided having a fluid sensing means, an optic transmission means, a signal processing means, and an interface means. The fluid sensing means comprises a reflective sensing media in a self-contained cassette. The cassette is operationally associated with a sample chamber. The cassette advances the reflective sensing media by a motor which is driven by the signal processing means. The optic means comprises a fiber optic line which is partially associated with a lamp and partially associated with a photocell. Light having a wave length in a specified range originates from the lamp, passes through a portion of the fiber optic cable and is cast upon the reflective sensing media. The altnerate portion of the fiber optic cable receives the reflected light from the reflective sensing media for transfer to the photocell. A signal is generated by the photocell representative of the change of reflectivity of the light from the reflective sensing media.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: October 19, 1993
    Assignee: Baker Hughes, Inc.
    Inventors: Chris L. Kimbell, Robert M. Hayman, W. Jay Szinyei
  • Patent number: 5172778
    Abstract: A drag-type drill bit for boring an earth formation having a plurality of cutting elements formed thereon. Each cutting element includes a cutting surface having a cutting edge formed thereon. During boring, the cutting edge is embedded into an earth formation so that the formation is received against a portion of the cutting surface. As the cutting surface advances against the formation, a chip forms. The chip has a first surface directed generally toward the cutting surface and a second surface directed generally in the direction of cutting element travel. A number of different embodiments are disclosed which include means formed on and in the cutting surface for communicating drilling fluid pressure via slots or discontinuities to a location on the cutting surface relatively close to the cutting edge.
    Type: Grant
    Filed: November 14, 1991
    Date of Patent: December 22, 1992
    Assignee: Baker-Hughes, Inc.
    Inventors: Gordon A. Tibbitts, Paul Pastusek
  • Patent number: 5115218
    Abstract: A microwave process seal and method is provided for use, for example, in the detection of ullage level and flow in a vessel or conduit by detecting the presence of a solid or liquid material in proximity to a microwave detector. Particularly, a horn design is provided in conjunction with, the microwave process seal of the present invention which fits in the mouth of the horn. The microwave process seal is kept as thin as possible to meet pressure requirements. The surface of the seal is oriented at or near the Brewster angle. The Brewster angle is that angle for which there is total transmission across a dielectric boundary for energy that strikes the boundary with a linear polarization.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: May 19, 1992
    Assignee: Baker Hughes Inc.
    Inventor: Buford R. Jean
  • Patent number: 4995058
    Abstract: In a wireline data transmission system for passing data between downhole and surface locations in a wellbore, a system for transmitting data at a frequency above the relatively low roll of frequency of a wireline permits higher data rates to be transmitted over the wireline than would be possible using standard digital data formats. The present system utilizes short duration pulses which are placed on the wireline in conformity to the transition edge between voltage levels in a typical digital data format, and thus transmits the digital data over the wireline in a manner which is not adversely affected by the phase shifting which normally occurs when bi-level voltage data formats are used for data transmission over a wireline.
    Type: Grant
    Filed: February 7, 1989
    Date of Patent: February 19, 1991
    Assignee: Baker Hughes Inc.
    Inventors: Terry B. Byers, Vladimir Vaynshteyn
  • Patent number: 4971214
    Abstract: A double-walled thickener tank has an outer shell bottom and an inner shell bottom spaced to form interconnected or a discrete void space therebetwee. An incompressible load-carrying permeable material such as oil-impregnated sand is compacted in the void space(s) to provide a support for the inner shell bottom and confined fluid in the tank. Any leakage of fluid from the tank through the inner shell bottom is initially confined in the void space and conveyed down a slight slope on the top surface of the outer shell bottom so the leaking fluid drains into an interior space of a double-wall or single-wall discharge cone at the center of the tank where the leak and void spaces are accessed to detect any leaking of fluid from the tank.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: November 20, 1990
    Assignee: Baker-Hughes, Inc.
    Inventors: M. James Lillywhite, Michael E. Horn