| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Method for sampling specimen of saturated sand | JP4922784 | 1984-03-16 | JPS60194326A | 1985-10-02 | KASHIMURA HIROSHI |
| PURPOSE:To certainly collect only a specimen of saturated sand, by connecting freezing pipes through connection metal fittings having partition walls at every boundary position of a saturated sand layer and the other earth layer. CONSTITUTION:A freezing pipe 11 is constituted by connecting a plurality of freezing pipe constituting pipes 11a through connection metal fittings 12 freely detachable manner at every boundary positions of saturated sand layers b1, b2, b3 and a clay layer (c). The pipe 11 is pierced into the ground formed by stratifying saturated sand layers b1, b2, b3 and a clay layer (c) and a cooling medium is supplied into the pipe 11 from a cooling medium supply apparatus 4 to construct a frozen sand column 13 only to the layer b1. After the frozen column 13 is sampled, a frozen sand column is similarly constructed to the layer b2 to collect a specimen. | ||||||
| 42 | Partial freeze sampling | JP20869983 | 1983-11-07 | JPS60100737A | 1985-06-04 | MAKIHARA YORIO |
| PURPOSE:To facilitate operation without requiring a large quantity of refrigerants by performing sampling at optional depth by a freeze sampling method for obtaining the deformation characteristics of the ground. CONSTITUTION:A large-diameter hole 10 is digged and digging is further carried on with a small-diameter core tube 14 from the bottom of the hole 10. A samll- diameter freeze tube 17 is linked atop a heat insulating tube 16 is a disconnectable state, and the heat insulating tube 16 is covered with glass to constitute a double tube. A thermometer 18 is fitted to a synthetic resin round rod with the same diameter with the freeze tube 17 at the tip of the freeze tube 17 so as to control freeze temperature. An injection tube 19 is inserted into the heat insulating tube 16 and liquid nitrogen is injected to freeze the ground layer at the circumference of the heat insulating tube 16. In this case, water is circulated through a feed water tube 24 so as to prevented the underground water at the circumference of the heat insulating tube 16 from freezing. The heat insulating tube 16 is disconnected from the freeze tube 17. The frozen ground is digged surrounding the freeze tube 16 by using a core tube 22. | ||||||
| 43 | Apparatus for washing core barrel underground | JP13038581 | 1981-08-21 | JPS5771994A | 1982-05-06 | KURAIGU RICHIYAADO HAIRANDO |
| 44 | JPS5326201B2 - | JP10584973 | 1973-09-19 | JPS5326201B2 | 1978-08-01 | |
| 45 | JPS4924707B1 - | JP3787770 | 1970-05-02 | JPS4924707B1 | 1974-06-25 | |
| 46 | DETERMINING GAS CONTENT OF A CORE SAMPLE | PCT/GB2014050096 | 2014-01-14 | WO2014111701A3 | 2015-08-27 | SMITH DAVID; WILSON MICHAEL; BAINES LEE; LING ROB |
| An inner barrel for a core barrel or a core barrel assembly, the inner barrel having one or more side walls bounding at least partially an elongate internal volume for receiving, in use, a collected core sample, wherein the or each side wall is adapted to provide at least one fluid flow path from the elongate internal volume to outside the inner barrel. | ||||||
| 47 | APPARATUS AND METHODS FOR SPONGE CORING | PCT/US0143768 | 2001-11-14 | WO0240824A3 | 2003-02-06 | VAN PUYMBROECK LUC; WILSON BOB T; STIBBE HOLGER; HATLOY HALLVARD S |
| 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 corre 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. One or more sponge liners comprising an annular sponge layer secured within a tubular sleeve may be disposed within the inner barrel assembly. The present invention encompasses a number of embodiments of an improved sponge liner, as well as an inner barrel assembly comprised of one or more integrated sponge barrels. | ||||||
| 48 | CORING TOOLS EXHIBITING REDUCED ROTATIONAL ECCENTRICITY AND RELATED METHODS | EP15819474.6 | 2015-07-10 | EP3167144A1 | 2017-05-17 | FULDA, Christian; UHLENBERG, Thomas; WESEMEIER, Christoph |
| Coring tools configured to procure core samples of earth formations may include a coring bit comprising a cutting structure configured to cut a core sample and an outer barrel connected to the coring bit. The outer barrel may be configured to apply axial and rotational force to the coring bit. An inner barrel may be located within the outer barrel and may be configured to receive a core sample within the inner barrel. A sponge material may line an inner surface of the inner barrel and may be configured to absorb a fluid from the core sample. A stabilizer may be connected to the outer barrel. At least one blade of the stabilizer may be rotatable with respect to the outer barrel and may be configured to remain at least substantially rotationally stationary relative to the earth formation during coring. | ||||||
| 49 | TIGHT GAS FORMATION PRESSURE DETERMINATION METHOD | EP15737517.1 | 2015-01-13 | EP3068972A1 | 2016-09-21 | WESTACOTT, Donald; QUINTERO, Luis, F. |
| A disclosed effective porosity determination method for tight gas formations includes: obtaining a core sample sealed in a pressure-maintaining core vault during transport out of the borehole; coupling the core vault to a collection chamber; based at least in part on measured pressure, temperature, and fluid volumes in the collection chamber, deriving the number of moles of gas retrieved with the core sample; and combining the number of moles with a downhole pressure, a downhole temperature, and a downhole core sample volume to determine an effective porosity of the tight gas formation. A system embodiment includes: a coring tool having a core vault with a seal to provide pressure-preserved transport of a core sample from a tight gas formation; a collection chamber that attaches to the core vault to measure volumes of fluids and gas; and a processing unit that responsively determines an effective porosity of the tight gas formation. | ||||||
| 50 | SMALL CORE GENERATION AND ANALYSIS AT-BIT AS LWD TOOL | EP11810012.2 | 2011-04-29 | EP2596205A1 | 2013-05-29 | KUMAR, Sunil |
| The present disclosure is related to an apparatus for taking a sample in a wellbore during drilling operations. The apparatus may include a drill bit configured to form a core and at least one retractable cutter internal to the drill bit for taking the sample from the core. The apparatus may also include equipment for analyzing the sample, extracting fluid from the sample, testing fluid from the sample, encapsulating the sample, and/or tagging the sample. The present disclosure is also related to a method for taking a core sample without interrupting drilling operations. The method includes taking a core sample using a drill bit configured to take a core sample using internal cutters. The method may also include analyzing the sample, extracting fluid from the sample, analyzing fluid from the sample, encapsulating the sample, and/or tagging the sample. | ||||||
| 51 | Improvements in or relating to core stabilization | EP08251698.0 | 2008-05-14 | EP1992781B1 | 2012-07-11 | Garcia, Jean-Valery Sylvian; Cravatte, Philippe |
| 52 | PROCEDE DE CAROTTAGE ET CAROTTIER POUR SA MISE EN OEUVRE | EP97900512.1 | 1997-01-15 | EP0874947B1 | 2003-08-20 | FANUEL, Philippe; HOLT, Rune; KENTER, Cor; BRIGNOLI, Marco |
| A core sampling method, particularly for the oil industry, wherein actual core sampling is performed by means of a core sampler (1) comprising at least one inner barrel (5), an outer barrel (2) and a bit (3), and a substantially axial compressive force (F) is exerted on the top (7A) of a core sample (7) being formed, at least during a major part of the core sampling process, said force being within a range determined particularly on the basis of the material of the core sample (7), whereafter the force (F) is removed at the latest before the core sample (7) is withdrawn from the inner barrel (5). A core sampler for carrying out the method is also provided. | ||||||
| 53 | Apparatus and method for obtaining core samples | EP02251828.6 | 2002-03-14 | EP1251240A3 | 2003-03-05 | Cravatte, Philippe Louis |
An apparatus and method for obtaining core samples from a wellbore includes bringing a substance (3) into contact with the core sample. The substance (3) is adapted to retain at least a portion of fluids recovered with the core sample. A receptacle (2) such as a core barrel (2) contains the substance and is inserted into the wellbore and receiving the core sample in the receptacle (2). The substance may be sealed in the receptacle by a dissolvable plug mechanism (10). The substance (3) is transformable between a highly viscous state and a substantially solid matrix. |
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| 54 | Apparatus and method for obtaining core samples | EP02251828.6 | 2002-03-14 | EP1251240A2 | 2002-10-23 | Cravatte, Philippe Louis |
An apparatus and method for obtaining core samples from a wellbore includes bringing a substance (3) into contact with the core sample. The substance (3) is adapted to retain at least a portion of fluids recovered with the core sample. A receptacle (2) such as a core barrel (2) contains the substance and is inserted into the wellbore and receiving the core sample in the receptacle (2). The substance may be sealed in the receptacle by a dissolvable plug mechanism (10). The substance (3) is transformable between a highly viscous state and a substantially solid matrix. |
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| 55 | CURABLE GYPSUM-CONTAINING COMPOSITION AND METHOD FOR STABILIZATION OF UNCONSOLIDATED CORE | EP96917743.0 | 1996-05-14 | EP0832049A1 | 1998-04-01 | HJELMELAND, Odd; ARDÖ, Björn, Arild |
| A curable gypsum-based composition for the production of cured gypsum matrix, the composition comprising a two-component composition comprising: (a) a first component comprising 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, sulphonate, phosphate or phosphonate, said acid optionally also containing at least one hydroxy group per molecule; and/or (ii) inorganic anions selected from the group consisting of polyphosphate and polyborate, or mixtures thereof, and (b) a second component comprising a set accelerating substance comprising water-soluble salts of multivalent metal ions. The water soluble salts in component (b) forms stable precipitate or complexes with the acid in component (a). The component (b) 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. | ||||||
| 56 | Method and apparatus for measurement of in-situ horizontal stress of non-coherent soil | EP89306185.3 | 1989-06-19 | EP0403699A1 | 1990-12-27 | Suzuki, Yoshio; Hatanaka, Munenori; Ohara, Junryou; Makihara, Yorio |
A high quality frozen core sample 5 of a non-coherent soil such as sand or gravel is covered in a rubber membrane 6 and mounted on pedestal 14 beneath load-exerting cap 13 (to simulate vertical in-situ load at sampling depth) within a pressure chamber with walls 10. Water is filled in to surround the sample. Expansion of the sample 5 on consequent melting is resisted by increasing the air pressure over the water i.e. so as to maintain thegap between float 27 and sensor 28 constant as a measure of water level. The pressure exerted is a measure of the lateral stress on the non-coherent soil. A variant method for field use involves lowering a membrane-covered test member into a frozen borehole and exerting pressure on the walls thereof to prevent dimension change during thawing, the exerted pressure, possibly with a correction for pore water pressure between the soil particles in-situ, being a measure of the lateral stress. |
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| 57 | Method and apparatus for coring with a core barrel sponge | EP87110321 | 1987-07-17 | EP0254216A3 | 1988-12-07 | Radford, Steven R.; Dàvis, Stanley J. |
Jamming in core barrels or loss of coring information in boreholes in which sponge core coring tools are disposed can be avoided by employing an absorbent member which is formed and placed in contact about the core (28) after it has been cut and disposed within the inner tube (26). A liquid foam is catalytically formed from two constituent parts which are hydraulically forced from longitudinal chambers (50, 52) in the inner tube walls (26) into an area in the throat (70) of the bit where the parts meet and exothermically generate a liquid foam. The liquid foam rises into a plurality of longitudinal open chambers (46) in the inner tube (26). Each of the open chambers (46) has a longitudinal slot (48) defined therethrough which communicates the chamber (46) with the axial bore in which the core (28) is disposed. The liquid foam flows into the longitudinal chambers (46) and into the annular space between the inside surface of the inner tube and the core. Ultimately, the core is totally immersed in the liquid foam. Thereafter, within a predetermined curing time, the liquid foam cures to form a sponge-like solid. |
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| 58 | Method and apparatus for reducing field filter cake on sponge cores | EP84302058.7 | 1984-03-27 | EP0132020B1 | 1987-09-16 | Park, Arthur; Wilson, Bobby Talma |
| 59 | Method for determining the amount of oil in a sponge core | EP86202312.4 | 1986-12-17 | EP0227192A2 | 1987-07-01 | DiFoggio, Rocco; Ellington, William Eugene; Dangayach, Kailash Chandra Banwarilal |
The oil lost by the core sample and captured by the sponge during sponge coring is extracted from the sponge using a solvent selected from the group consisting of cycloalkanes, ethers, and freons. |
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| 60 | ANALYZING FLUIDS IN CORE SAMPLES CONTAINED IN PRESSURIZED NMR CORE HOLDERS WITH 1H AND 19F NMR | US15559825 | 2016-09-20 | US20180292477A1 | 2018-10-11 | Songhua CHEN; Donald Clifford Westacott |
| Pressure coring where the core apparatus drills the core sample and seals the core sample at its native downhole pressure (e.g., several thousand psi) may be expanded to include nuclear magnetic resonance (NMR) imaging components to produce a pressurized NMR core holder that allows for NMR imaging of the core samples having been maintained in a downhole fluid saturation state. NMR imaging performed may include 1H and also 19F imaging depending on the chamber fluid used in the pressurized NMR core holder. | ||||||
