Abstract: The present invention comprises a hydra-pneumatic load sensor and signal system including two stacked bellows, one filled with liquid, the other with a pressurized gas. Load on the sensor is initially supported by the gas filled bellows to a predetermined limit, above which the liquid filled bellows generates a liquid pressure signal which is used with a readout or control device.
Abstract: The present invention relates to a thermally stable crosslinked gel fracturing fluid for use in the treatment of subterranean formations penetrated by a well bore. The fracturing fluid comprises an aqueous liquid, a gelling agent comprising a selected modified cellulose ether, a crosslinking agent and any additional additives that may be present. The fracturing fluid is thermally stable under shear at temperatures in excess of about 200.degree. F.
Abstract: High density well drilling, completion and workover brines having low fluid loss to subterranean formations when in contact therewith are provided comprised of water, one or more inorganic salts, and an additive for reducing fluid loss. The additive is comprised of water soluble binary or ternary copolymers formed from vinyl monomers. Methods of use are also provided.
Abstract: An improved grouting method and arrangement using aqueous solutions of alkali silicate materials confined between a pair of pile seal assemblies in sealing the annular space formed between either a jacket leg or pile sleeve and a pile driven therethrough or similar annular space of an offshore platform to support a column of grout thereon so that the annular space may ultimately be filled with grouting material.
Abstract: The present invention relates to a method of acidizing a subterranean formation or well bore employing an acidic solution containing a stabilized corrosion inhibitor composition comprising an inhibiting effective amount of an acetylenic alcohol, a quaternary ammonium compound, an aromatic hydrocarbon, an antimony compound, and a stabilizer which substantially prevents precipitation of solubilized antimony-containing compounds from aqueous solutions.
Abstract: The present invention relates to a thermally stable crosslinked gel gravel packing fluid for use in the treatment of highly deviated well bores penetrating a subterranean formation. The gravel packing fluid comprises an aqueous liquid, a gelling agent comprising a selected modified cellulose ether, a crosslinking agent, a breaker, a particulate agent and any additional additives that may be present.
Abstract: An optical reader contained in a portable case includes elements for rotating a chart containing indicia and for moving a lens and photo-responsive member substantially parallel to the axis of rotation of the chart. These elements are controlled so that the photo-responsive element detects every one of an array of discrete informational units defined by the optical reader on the chart and for generating for each discrete informational unit a respective binary bit having one of two logic values depending upon whether the respective discrete unit is relatively light or relatively dark. The reader also includes circuit elements for detecting every eighth one of the respective binary bits to define a byte of information representing eight of the discrete informational units of the chart. The reader is controlled to commence a read of the chart from the right-hand end and to incrementally read strips of the chart progressing to the left-hand end of the chart.
Type:
Grant
Filed:
March 8, 1982
Date of Patent:
November 5, 1985
Assignee:
Halliburton Company
Inventors:
John E. Mosier, Jim B. Surjaatmadja, Jack C. Penn
Abstract: An improved reusable plug for sealing hollow cylindrical members, in particular, the jacket legs, pile sleeves, pilings, conductor pipes, or other similar members of offshore structures, the improved reusable plug comprising a packer mandrel assembly, packer member, packer setting assembly, dog locking sleeve assembly, pressure equalization plug assembly, and overshot retrieving assembly.
Abstract: The present invention provides a method for reducing the corrosive effects of a heavy brine upon a metal by admixing a quantity of a selected corrosion inhibitor with the brine solution. The corrosion inhibitor can comprise at least one member selected from the group consisting of a monovalent or divalent salt of erythorbic acid, a molybdate salt, ferrous gluconate and sodium gluconate. The brine solution can contain potassium, sodium, calcium or zinc halide salts. The corrosion inhibitor can be used in drilling, completion, packer and workover fluids.
Abstract: Methods and cleaning compositions are provided for more effectively removing oil, grease, paint, varnish and other organic coatings from metallic surfaces in industrial equipment, oil well tubular goods and the like. The metallic surfaces are contacted with a cleaning composition comprised of an aqueous solution of an alkaline material, a nonionic surface active agent and a wetting agent for a period of time sufficient to remove the organic materials therefrom. The nonionic surface active agent is an alkylarylpolyether alcohol having an ethylene oxide content in the range of from about 10 to about 13 units of ethylene oxide per molecule, and the wetting agent is selected from the group consisting of aromatic phosphate esters of the formulae: ##STR1## and mixtures of such phosphate esters wherein x has a value in the range of from about 4 to about 6.
Abstract: A self-contained portable unit for producing a mixture of substances in response to two separate flows includes a portable trailer upon which a holding tank is mounted. Various additive channels are maintained on the trailer for introducing additives, at selectable concentrations or rates, into a first flow which occurs through an inlet conduit connected to an input of the holding tank. Connected to an output of the holding tank is an outlet conduit to which an external blender device can be connected. The trailer has additional additive channels contained thereon for introducing further additives, at selectable concentrations or rates, into a second flow between the holding tank and the external device. Control of the additives is maintained by a microcomputer-based controller or a manual, back-up controller, whichever is switchably selected for each additive channel.
Type:
Grant
Filed:
April 6, 1983
Date of Patent:
August 27, 1985
Assignee:
Halliburton Company
Inventors:
Stephen F. Crain, Steven H. Gray, Michael L. Green, Ronald A. Gibson
Abstract: A portable apparatus for controlling the production of a mixture of a fluid and a plurality of additives utilizes a unified control panel having all of the necessary controls compactly contained in a single housing for providing both automatic and manual control of each of the additive channels through which the additives are mixed with the primary fluid. The control of each additive channel is achieved through a software controlled algorithm by which errors are only incrementally, rather than totally, applied to prior drive signals at any one time.
Type:
Grant
Filed:
April 6, 1983
Date of Patent:
August 27, 1985
Assignee:
Halliburton Company
Inventors:
Stephen F. Crain, Steven H. Gray, Edward P. Arnold, Timothy J. Dodd
Abstract: A back-off tool comprising an explosive contained in a tubular housing which will disintegrate into fine particles upon detonation of the explosive. The explosive may be in the form of pellets so as to have the capability to vary the amount of explosive force by employing different diameter pellets and different numbers of pellets in the housing. A pressure compensation arrangement may be employed.
Abstract: An annulus pressure responsive downhole tool includes a housing having a power piston slidably disposed therein. First and second pressure conducting passages communicate a well annulus with first and second sides of the power piston. A retarding device is disposed in the second pressure conducting passage for delaying communication of a sufficient portion of an increase in well annulus pressure to the second side of the power piston for a sufficient time to allow a pressure differential across the power piston to move the power piston from a first position to a second position relative to the housing. A pressure relief valve is communicated with the second pressure conducting passage between the power piston and the retarding device for relieving from the second pressure conducting passage a volume of fluid sufficient to permit the power piston to travel to its second position.
Abstract: A method of treating a permeable structure for the purpose of stabilizing fines in the structure. The method is carried out by contacting the fines with an effective amount of nitrogen-containing cationic perfluorinated compounds.
Abstract: A method of treating a permeable structure for the purpose of stabilizing fines in the structure using organic copolymers containing N-vinylpyrrolidone in the copolymer repeat unit.
Abstract: An improved well drilling and completion fluid composition which has excellent stability over a broad temperature range, has a low tubular goods corrosion rate, prevents the sloughing of clay-containing materials and is environmentally acceptable. The composition is comprised of water, a viscosity increasing agent, a fluid loss reducer and rheology stabilizer and one or more water-soluble clay-stabilizing organic salts.
Abstract: A method of treating an earthen formation containing swelling clays or migrating fines or combinations thereof to reduce the loss of permeability in said formation. The method is carried out by contacting the swelling clays or fines with an effective amount of an organic polycationic polymer which contains three quaternary ammonium moieties in the monomer repeat unit.
Abstract: A perforating gun carrier comprising an inner substantially tubular housing within an outer substantially tubular sleeve. The inner housing includes gun ports extending through the wall thereof in a pattern corresponding to the pattern of shaped charges to be carried within. The sleeve may be secured to the housing by welding, soldering, brazing, adhesive bonding or other known method, may be shrink-fit onto the housing, or may be mechanically secured thereon.