| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Apparatus and methods for sponge coring | US11351004 | 2006-02-09 | US07234547B2 | 2007-06-26 | Luc Van Puymbroeck; Bob T. Wilson; Holger Stibbe; Hallvard S. Hatloy |
| A sponge core barrel for use in performing sponge coring and methods of assembling the sponge core barrel, as well as methods of performing sponge coring. The sponge core barrel includes an outer barrel assembly, a core bit secured to a lower end thereof, and an inner barrel assembly disposed therein. The inner barrel assembly may comprise multiple, sponge-lined inner tube sections and may also include a near-bit swivel assembly. The sponge core barrel may include a piston assembly configured to be released by contact with a core sample without imparting high compressive forces to the core. The sponge core barrel may also include a pressure compensation mechanism and, optionally, a thermal compensation mechanism cooperatively configured to maintain the pressure of presaturation fluid. The sponge core barrel may also include a valve assembly enabling the make-up and presaturation of multiple, sections of inner tube to form a single, continuous chamber. | ||||||
| 82 | Method of coring crustal core sample, and antimicrobial polymeric gel and gel material used in the method | US10354789 | 2003-01-30 | US07013993B2 | 2006-03-21 | Noriaki Masui; Shigeru Deguchi; Kaoru Tsujii; Koki Horikoshi |
| A method of taking a crustal core sample, wherein the crustal core sample is obtained in a state coated with an antimicrobial polymeric gel formed of a polymer and an inorganic antimicrobial agent dispersed in the polymer. The inorganic antimicrobial agent is a compound containing at least one of silver, zinc or ions thereof. The inorganic antimicrobial agent is carried on a carrier material. The polymer forming the antimicrobial polymeric gel contains a hydrophilic group, and the antimicrobial polymeric gel contains the inorganic antimicrobial agent in a proportion of 0.0001 to 10.0 mass %. | ||||||
| 83 | Method of coring a crustal core sample and flow-able coating material for coring a crustal core sample | US11063926 | 2005-02-22 | US20050183886A1 | 2005-08-25 | Noriaki Masui; Shigeru Deguchi; Kaoru Tsujii |
| Disclosed herein is a method of coring a crustal core sample, which comprises using a crustal core sampler equipped with a flow-able coating material-ejecting mechanism for ejecting a flow-able coating material, and ejecting the flow-able coating material composed of a polymer substance having a colloidal particles capturing ability by aggregating function and a water-absorbing polymer substance, from the flow-able coating material-ejecting mechanism of the crustal core sampler thereby coring a crustal core sample in a state coated with the flow-able coating material. | ||||||
| 84 | Core stabilization apparatus and method therefor | US10176593 | 2002-06-21 | US20020162688A1 | 2002-11-07 | Theodore Joseph Griffin JR. |
| A core stabilization apparatus and method are implemented. An inner barrel having a plurality of ports disposed circumferentially and axially in a wall thereof is provided. A gas manifold is attached to a first subsets of the ports. Gas is delivered to an interior of the inner barrel via the gas manifold and the corresponding ports. Drilling mud remaining in the interior of the inner barrel is expelled through a second subset of ports. After expulsion of the drilling mud, a stabilizing compound is injected into the interior via an injection manifold attached to the second subset of ports. Upon curing of the stabilizing compound, the inner barrel and core sample contained therein may be sectioned or otherwise manipulated. | ||||||
| 85 | System for recovering core samples under pressure | US09779896 | 2001-02-08 | US20020033281A1 | 2002-03-21 | James T. Aumann; Craig R. Hyland |
| A pressure and temperature core sampler comprises a tool for recovering cores specifically enabling the evaluation of methane hydrate resources. Because methane hydrate tends to decompose under conditions of pressure decrease and/or temperature increase as the samples are retrieved to the surface, a coring tool in accordance with the present invention provides a self-contained system for retrieving core samples at or near in situ pressure while cooling the core sample. The coring tool is preferably a wire line retrievable device that provides for nearly continuous coring during the drilling operation. | ||||||
| 86 | Method for preserving core sample integrity | US73787700 | 2000-12-15 | US6283228B2 | 2001-09-04 | COLLEE PIERRE EMMANUEL; RADFORD STEVEN R; MALLOW WILLIAM A; ENRIGHT DOROTHY P |
| A method for protecting integrity of a core sample during transport from a subterranean formation to the surface comprising: cutting a core sample from the subterranean formation using a drilling fluid; encapsulating the core sample with an encapsulating material that is separate from the drilling fluid and comprises a property which renders the encapsulating material capable of protecting the chemical integrity of the core sample during transport from the subterranean formation to the surface, wherein the property is other than a property selected from the group consisting of a viscosity which increases in response to a decrease in temperature and an ability to solidify in response to a decrease in temperature; and, transporting the encapsulated core sample from the subterranean formation to the surface. | ||||||
| 87 | Method for the evaluation of shale reactivity | US09084602 | 1998-05-27 | US06247358B1 | 2001-06-19 | Hélio Maurício Ribeiro dos Santos |
| Shale reactivity is evaluated by testing a preserved test plug of shale sample in a triaxial test machine, the test plug being prepared by collecting a downhole shale sample and keeping it all times immersed in a preserving mineral oil so as to avoid dehydration, then applying radial and axial pressure on the test plug surrounded by mineral oil up to equilibration to overburden pressure, the test fluid being then contacted with the sample and the interaction of fluid and sample being evaluated by axial and radial deformations as measured by a triaxial detector apparatus sensitive to vertical and radial strains occurring across the shale sample, while the shale sample is subjected to any of a set of different conditions including a temperature or thermal potential, a hydraulic potential and/or a chemical potential. Only one fluid is tested on each sample. A sister test at ambient temperature and atmospheric pressure is run in order to constitute a visual counterpart of what is occurring in the triaxial test machine. | ||||||
| 88 | Curable gypsum-containing composition and method for stabilization of unconsolidated core samples | US973317 | 1998-03-06 | US5980628A | 1999-11-09 | Odd Hjelmeland; Bjorn Arild Ardo |
| A curable gypsum-based composition for the production cured gypsum matrix. The composition comprises two-components, the first component includes calcined gypsum suspended in water, and a set retarding substance comprising (i) an organic acid containing at least two acid groups selected from the group consisting of carboxyl, sulphate, sulfonate, phosphate and phosphonate, the acid optionally also containing at least one hydroxy group per molecule; and/or (ii) inorganic anions selected from the group consisting of polyphosphate, polyborate and mixtures thereof. The second component comprises a set accelerating substance including water-soluble salts of multivalent metal ions. The water soluble salts in the second component form stable precipitates or complexes with the organic acid in the first component. The second component may also comprise easily soluble salts of ammonium and/or cations from the first group of the periodic table of the elements, which will accelerate the hardening process. Also a method for stabilizing core sample material from a drilling hole. The method at least partially encapsulates the core sample material in a cured gypsum matrix. | ||||||
| 89 | Method and composition for preserving core sample integrity using an encapsulating material | US214392 | 1994-03-16 | US5560438A | 1996-10-01 | Pierre E. Collee; Dorothy P. Enright |
| The present invention provides a method for maximizing the chemical integrity and, if desired, maintaining the mechanical integrity of a core sample during transport from a subterranean formation to the surface. The method involves cutting and encapsulating the core sample as it enters the core barrel with an encapsulating material that either (a) inherently is capable of protecting the chemical integrity of the core sample, or (b) is capable of increasing in viscosity and/or solidifying in response to natural decreases in temperature to maintain the mechanical integrity and maximize the chemical integrity of the core sample during transport. | ||||||
| 90 | Method and apparatus for pressure coring with non-invading gel | US328872 | 1994-10-25 | US5482123A | 1996-01-09 | Pierre E. Collee |
| A pressure core barrel including an inner tube containing a non-invasive gel for encapsulating a core sample. An anti-whirl core bit is employed, and the core bit and inner tube pilot shoe are configured and arranged to prevent damage to the core from drilling fluid. A special high viscosity, low spurt loss coring fluid is employed in the coring operation. When the encapsulated, pressurized care sample is brought to the surface, pressure is bled off and the core sample's chemical and mechanical integrity are substantially preserved by the gel. | ||||||
| 91 | Method for minimizing mud solids invasion of core samples obtained during subsurface coring | US213810 | 1988-06-30 | US4848487A | 1989-07-18 | Maynard L. Anderson; Eve S. Sprunt; Peggy M. Wilson; Susan O. Wooten |
| A core sample of an earth formation is obtained by drilling with a coring bit and circulating a coring fluid through the coring bit. The coring fluid contains no mud solids for contaminating the core sample or, in the alternative, contains drilling mud mixed with a bulk material which invades the core sample and occupies the core sample pore spaces preferentially over mud solids. This bulk material is more readily removed from the core sample by cleaning than mud solids. | ||||||
| 92 | High-pressure waterjet/abrasive particle-jet coring method and apparatus | US221643 | 1988-07-11 | US4825963A | 1989-05-02 | James L. Ruhle |
| A simple low-cost and highly passive bitless nonrotational nondeviating jam-proof thin-kerf Newtonian hydraulics retrievable core-sampling method and apparatus that advances its circular core kerf through the rock by a combination of high-pressure droplet-impact and abrasive particle-jet effects, and which is independent of the weight of any drillpipe, drill collars, or any other heavy cylindrical conduit or tubular conduit associated with the coring operation. The Newtonian hydraulics features high-pressure solids-free fresh water or solution-weighted brine as the drilling fluid, which excavates rock along the inner periphery of the circular core kerf by droplet-impact effects of the high-pressure and high-velocity circular sheet of drilling fluid and by the abrasive particle-jet effects of the deflected drilling fluid and excavated rock particles along the outer periphery of the circular core kerf. The hydraulic horsepower delivered to the downhole coring apparatus and the hydraulic hoisting capacity of the excavated rock particles to the surface can both be increased considerably by employing high-density solution-weighted brine as the drilling fluid. The use of solution-weighted brine, if chilled at the surface to below the freezing point of the penetrated porefluid, and if circulated in the borehole by means of insulated drillpipe, would also provide the additional advantage of freeze-stabilizing the borehole wall, freeze-stabilizing the excavated core samples, and freeze-entrapment of uncontaminated porefluids in the core samples. | ||||||
| 93 | Method and apparatus for preventing contamination of a coring sponge | US661893 | 1984-10-17 | US4598777A | 1986-07-08 | Arthur Park; Bob T. Wilson |
| A well coring apparatus (10) includes an outer barrel (12) and an inner barrel (18). The inner barrel (18) is sealed at one end with a sealing member (80) and has a reciprocating piston (70) disposed in the other end thereof. An O-ring (68) is disposed at the receiving end of the inner barrel (18) to provide a seal therefor. Spring members (76) provide a restrictive force to the piston (70). A sponge (50) is disposed around the inner walls of the inner barrel (18) for contacting the core (82). A fluid is disposed in the inner space (78) of the inner barrel (18) and pressurized. Reciprocation upward of the piston (70) causes the fluid to flow therefrom out the receiving end of the inner barrel (18). This flow of fluid washes the sides of the core (82) to prevent drilling mud from caking about the surfaces thereof and preventing proper transfer of fluids contained within the core (82) to the sponge (50). The fluid in the inner space (70) has a density that is lower than that for fluids external to the inner barrel (18) such that contamination of the sponge (50) is prevented. | ||||||
| 94 | Pressure core barrel for the sidewall coring tool | US481091 | 1983-03-31 | US4466495A | 1984-08-21 | Alfred H. Jageler |
| This relates to a pressure coring tool to obtain pressurized samples of the formation through which the wellbore is drilled. It includes a housing which supports a guide means along which the drill bit, core barrel and motor can be moved to extend or retract the cutting bit and core barrel along a selected path which preferably is horizontal. The core barrel is retracted inwardly on a horizontal path and tilted in an upward position such as the outer end of the core barrel is higher than the end near the barrel. Means are provided to pressure seal the cut core within the core barrel. | ||||||
| 95 | Apparatus and method for obtaining a core at in situ pressure | US128104 | 1980-03-07 | US4317490A | 1982-03-02 | Lionel J. Milberger; Eddie W. Denk; Kai R. Hostrup |
| A method and apparatus are disclosed for obtaining a core at in situ pressure of sedimentary deposits at the bottom of a well bore or body of water. The core barrel has a pressure chamber that is closed and opened by a ball valve actuated from the surface. When in position above the sedimentary deposits to be cored, a sample tube is extended from the pressure chamber into the sedimentary deposits to obtain a core. The sample tube is retracted into the pressure chamber and the valve closed to trap ambient pressure in the chamber. The sample tube and valve are operated from the surface. | ||||||
| 96 | Method and apparatus for obtaining saturation data from subterranean formations | US152849 | 1980-05-23 | US4312414A | 1982-01-26 | Arthur Park |
| An apparatus (10) and method for obtaining oil and water saturation data from subterranean formations includes a drill bit (12) for boring a well core (26) containing the fluids. A core-catcher bowl (18) guides the well core (26) in the apparatus (10). An outer barrel (14) is attached to the drill bit (12) and contains the core-catcher (18). An inner liner (20) positioned in the outer barrel (14) receives the well core (26). An oil absorbent sponge-like member (22) is contained in the inner liner (20) with a diameter (24) for receiving the well core (26). The oil absorbent sponge-like member (22) absorbs the fluids contained in the well core (26). | ||||||
| 97 | Method and apparatus for stabilizing borehole cores | US706649 | 1976-07-19 | US4071099A | 1978-01-31 | Wilber M. Hensel, Jr. |
| A method of and apparatus for stabilizing oil well cores taken within rubber sleeve core barrels is provided wherein an unconsolidated and friable columnar mass of earth may be handled without altering the characteristics of its physical structure. A housing is therein provided for receiving a conventional rubber sleeved core sample from a vertically suspended core barrel inside a drilling rig. The housing is adapted for the positioning of the ensleeved core therein and the circulation therearound of a subfreezing mass for the freezing and solidification of the core fluids contained therethrough. Freezing of the core fluids immobilizes rock grains and the like, stabilizing the core sample for handling and second stage stabilization through rigid encasement in a casting medium. The casted core may then be handled in a conventional manner during transportation for subsequent analysis in its original condition. | ||||||
| 98 | Grout injecting apparatus | US587109 | 1975-06-16 | US3986536A | 1976-10-19 | Leroy W. Janson |
| Apparatus is described for injecting grout or cementitious material into a small diameter hole which has been bored in the soil at a depth below a larger diameter hole for the purpose of obtaining an intact sample of soil and/or rock formation. The smaller diameter or second hole has a hollow rod from the apparatus inserted into it and grout injected through it and therearound into contact with the soil. The rod is detached from the apparatus which is removed and the mass of soil, rod and grout is recovered by overboring in a conventional manner. | ||||||
| 99 | Obtaining unaltered core samples of subsurface earth formations | US3454117D | 1968-01-16 | US3454117A | 1969-07-08 | ECKEL JOHN E; LOCK EVERETT H |
| 100 | Method and apparatus for obtaining soil samples | US43404865 | 1965-02-19 | US3318394A | 1967-05-09 | GLEASON JR GALE R; OHLMACHER FREDERICK J |
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