Geoservices

Societe Nationale Elf Aquitaine (production)

Geoservices S.a.

Compagnie Geofinanciere

Geoservices, Societe Anonyme

Olivier Issenmann

Jean Patillet

A joint for end-to-end coupling of two tubular elements includes tapered coupling surfaces on the tubular elements which are bonded together by adhesive. The coupling surfaces comprise a plurality of cylindrical sections of gradually increasing and decreasing diameters, respectively. A plurality of axially spaced-apart centering rings are interposed between the tubular elements to provide proper positioning thereof and to facilitate injection of bonding material between the coupling surfaces. A series of axially spaced-apart conducting rings forming part of an antenna surround one of the tubular elements and are insulated therefrom by a layer of bonding material. The conducting rings are separated from each other by toric joints and shims. Openings are provided in one of the tubular elements for injecting the bonding material under pressurized conditions, and an insulating sheath is bonded to inner peripheries of the tubular elements.

Electronically-nonconducting system for the connection of metal tubular

A method and apparatus for sampling the gaseous content of a liquid laden with solids initially involves sampling the liquid as close as possible to the source of the liquid. A strainer housing having a strainer plate for filtering out debris in the liquid is connected to a suction pump for sucking the liquid into the housing and to the pump. The pump delivers the sampled liquid to a degassing device mounted on a frame with the pump. The degassing device agitates the liquid to liberate gases suspended therein. The gases are then collected from the degassing device so that the gases may be analyzed. A motor mechanism on the frame drives the pump, a rotating agitator in the degassing device and a rotating scraper on the exterior of the strainer plate simultaneously. This method and apparatus are particularly applicable to the sampling of drilling mud from an oil well exploration site for purposes of analyzing the hydrocarbon content of the drilling mud.

Method and apparatus for sampling the gaseous content of a liquid

An apparatus for analysis of samples containing organic matter, especially of rock from oil drilling mud, including a loading arm hinged at its base to be movable from a tilted position when it receives a sample-bearing cartridge, which fits on the top of the arm, to a vertical position in which the arm can be raised to fit the upper end of the cartridge within a selectively electrically heated and air cooled chamber. A channel for carrier gas, e.g. hydrogen, passes up the arm so that gas passes through the cartridge when it is held in the heating and cooling chamber, and through the heating and cooling chamber and then through a conduit to a burner within an ignition an analysis chamber. In use, the container is heated to pyrolyze the sample and the resultant vapors are entrained in the gas, burnt and analyzed by flame ionization. After which the sample-bearing cartridge is cooled in the heating and cooling chamber.

Apparatus and process for pyrolysis and analysis of samples containing

An antenna structure for transmitting signals from a transmitter at the bottom of a drill well to the earth's surface which includes a drill collar extending in an axial direction and which is adapted to support a transmitter therein, a cylindrical metal sleeve for forming part of an antenna for electromagnetic wave transmission, the cylindrical metal sleeve being disposed around the drill collar and adapted to be connected electrically to the transmitter, an insulating sheath between the cylindrical metal sleeve and the drill collar and a plurality of metal rings disposed between each opposite axial end of the cylindrical metal sleeve and confronting opposite axial end of the insulating sheath. The cylindrical metal sleeve has a diameter greater than the diameter of the drill collar and the insulating sheath has an axial length longer than the axial length of the cylindrical metal sleeve. The plurality of metal rings are electrically insulated from each other, from the cylindrical metal sleeve and from the drill collar. The cylindrical metal sleeve includes a plurality of circumferentially extending slots to provide elasticity to the cylindrical metal sleeve so that it will not become separated from the insulating sheath due to bending of the drill collar during drilling.

Antenna structure for use with a transmitter located at a great depth

A device for transmitting signals from a transmitter at the bottom of a drill well to the earth's surface including a drill collar which extends in an axial direction, a transmitter disposed in the drill collar, a cylindrical metal sleeve from forming part of an antenna for electromagnetic wave transmission, the cylindrical metal sleeve being disposed around the drill collar and connected electrically to the transmitter, the cylindrical metal sleeve having a diameter greater than the diameter of the drill collar and having an axial length shorter than the axial length of the drill collar, and an insulating sheath disposed between the cylindrical metal sleeve and the drill collar, the insulating sheath having an axial length shorter than the axial length of the drill collar.

Device for transmitting to the surface the signal from a transmitter

An apparatus and process for measuring the uncoiled length or coiled length of a cable of a winding gear such as a winch marks the cable along a generatrix of winding passing from one point of one turn of a layer of turns of the cable wound on a drum or on a subsequent layer carrying the cable for each would layer and on the total length of the cable corresponding to this layer at least one pair of equi-distant bench marks. A comparison is then made between the overall length, reeled off for each layer, and corresponding to the algebraic sum of the series of equal sections between them for each layer, to that calculated for a standard layer traversed by the cable. A processor receives successive periodic signals emitted by a measuring sensor which furnishes with each turn of the winch, as a function of the diameter of the turns and their number in each successive layer, a series of measurement signals which, once processed, furnish to a display device, the true length of a cable that has been reeled off or reeled on the drum.

Process and apparatus for measuring the coiled/uncoiled length of

A method and apparatus for processing the signal produced by the detector of a chromatographic analysis apparatus, wherein the detector signal is monitored over a fixed period of time, so spaced from a 'start' time origin as to include the approach to and fall from maximum concentration of one gaseous constituent flowing through the detector, and wherein the signal strength indicative of the maximum concentration of the constituent within the time period is detected and stored in an afferent index memory and the stored value of the signal is utilized to generate a value directly representative of the proportion of the constituent attaining maximum value within the time period.

Chromatographic analysis of gaseous matter

A device for simultaneously measuring various parameters such as the flow rate, the density and the temperature of the drilling mud issuing from a well during the drilling operation, and for recording said parameters, comprising a V-shaped measuring conduit the upstream portion of which is connected to the upper portion of a chute through which said mud flows and which opens into the atmosphere, while the downstream end of said measuring conduit is connected to a down spout directing said mud to oscillating screens.

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Lamorlaye, France

Olivier Issenmann