US3878904A - Core sampling device - Google Patents

Core sampling device Download PDF

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Publication number
US3878904A
US3878904A US367290A US36729073A US3878904A US 3878904 A US3878904 A US 3878904A US 367290 A US367290 A US 367290A US 36729073 A US36729073 A US 36729073A US 3878904 A US3878904 A US 3878904A
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United States
Prior art keywords
casing
sample tube
sample
tube
closure means
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US367290A
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English (en)
Inventor
Philip Richard Dobson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GILBERT GRAY AND CO Pty Ltd
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GILBERT GRAY AND CO Pty Ltd
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors

Definitions

  • PATENTEDAPR 22 I975 sum u gr 4 FIG.
  • This invention relates to apparatus for extracting core samples and more particularly to a device for extracting core samples from wet or dry loosely consolidated material.
  • Apparatus for extracting core samples from consolidated material have reached a highly advanced state. yet in the practice of obtaining substantially undisturbed cores from loosely packed or unconsolidated material. only limited success has been achieved.
  • An innovation employed when obtaining samples from loosely com pacted material has been to introduce a bubble of compressed air below the sample in the tube which assists in retaining the sample during withdrawal ofthe sample tube from the material.
  • core samples are to be taken of moist. loosely compacted material. for example wet sand or clay. the introduction of an air bubble has achieved only limited success.
  • the difficulty encountered in moist materials of this type is due to moisture being forced out of the sample. as the core is being taken. and forming a lubricant between the core and the inside walls of the core sampling tube. This lubricant allows the core to slide out of the tube as the tube is withdrawn from the material and hence the sam ple is lost.
  • apparatus for obtaining a core sample in a material.
  • a sample tube casing comprising a sample tube casing. a sample tube which is sized and shaped to locate within a bore of the casing with a clearance fit.
  • closure means connected to the casing and positioned within the casing bore. and means permitting limited movement of the sample tube with respect to the casing to actuate said closure means to substantially seal a core receiving end of the sample tube and prevent loss of the sample.
  • a hollow auger has an openable closure on the head of the auger such that the operation of passing the casing tube and sample tube through the hollow auger. when the sample taking depth is attained. opens said closure to allow insertion of the casing and sample tubes into the material below said depth. Once movement is effected to withdraw the sample tube from the material the closure means adjacent the innermost end of the sample tube actuates to close and thereby retain the sample in the sample tube. whereupon the core sample tube containing the sample and the core tube may be removed from the hollow auger together or the sample tube may be removed from within the core tube and the hollow auger.
  • the core tube When the core sample has been removed from the sample tube. the core tube may be reloaded with an empty sample tube having its closure means held in the open position such that the sample tube is readied to accept a further core sample when drilling has progressed to a further sample taking depth.
  • FIG. 1 is a cross-sectional view of a core sampling tube within a sample tube casing in the sampling configuration as employed in conjunction with a selfclosing auger head;
  • FIG. .2 is a cross-sectional view. similar to that of FIG. 1. showing the openable closure of the sample tube in position to retain a sample within the sample tube;
  • FIG. 3 is a perspective view of a suitable auger head adapted for use with the sample tube and sample tube casing of the present invention.
  • FIG. 4 is a perspective view of the sample tube openable closure of FIGS. I and 2.
  • FIG. I there is shown an auger head 5 adapted to be coupled with a hollow auger (not shown) by thread means 6.
  • sample tube casing I2 containing sample tube 20.
  • the sample tube casing 12 and the sample tube 20 are shown in the sampling configuration wherein a core of material is forced into the tube 20 through opening 21 as the sampling tube arrangement comprising tubes 12 and 20 is forced into the material to be sampled through the open jaws 7.
  • sample tube 20 there is located a disc valve 22 shown in an open position to allow gases and/or liquids. such as air and water. which may be ingested with the core sample. to escape from the sample via passage 23 and one or more orifices 24 located around the perimeter of the sample tube retaining adaptor 30.
  • the sample tube 20 is retained on the adaptor by means of pin 25 located through the adaptor 30 and the walls of the tube 20. As shown. pin 25 is retained in position by ring 26.
  • the coupled adaptor 30 and tube 20 are located with respect to tube casing 12 by spring-loaded retaining pins 27 and 28 through slots 13 in the sample tube casing I2.
  • Jaws 15 comprise a separable unit 16 which is retained in fixed relation to tube [2 by screw on nose piece 17 of tube 12.
  • the entire sampling tube arrangement may then be withdrawn into the auger FIG. 2) such that the initial withdrawal movement acts only upon adaptor 30 and its affixed sample tube 20.
  • Adaptor 30 is coupled to a withdrawal means by spigot 3
  • FIG. 2 When this position is attained the spring-loaded jaws close to seal off the end of sample tube 20, thereby retaining the sample.
  • the tube casing 12 and sample tube may then be completely withdrawn from the hollow auger where upon the sample tube 20 is withdrawn from within the tube casing 12 by compressing pin 28 and sliding adaptor 30 and tube 20 out of the casing.
  • the sample tube [2 containing the sample is then separated from the adaptor by removing ring 26 from about the pin and sliding the pin out of its location.
  • An empty sample tube may then be coupled with adaptor and relocated within the tube casing 12 in readiness for taking a further sample.
  • FIG. 3 shows an auger head 5 of the type shown in FIGS. 1 and 2 which comprises threaded portion 6 for connecting the head to a hollow auger.
  • the jaws 7 are biased toward a closed position by return springs 4 and cutting prongs 8 of any suitable configuration are mounted as shown.
  • FIG. 4 shows the separable unit 16 comprising jaws I5 and springs 18 which functions as a closure for the sample tube during withdrawal from the auger and retains the sample within the tube 20.
  • the unit 16 is retained within casing tube [2 by the screw-on nose piece 17.
  • valve arrangement may be deleted from the apparatus or modified. for example. to a ball valve.
  • the method and apparatus of this invention have enabled extremely accurate core samples to be taken of very moist unconsolidated materials. such as wet sands. as well as gravel type materials, virtually without disturbing the material profile and loss of any portion of the core sample.
  • Apparatus for obtaining a core sample in a material comprising a sample tube casing. a sample tube which is sized and shaped to locate within a bore of the casing with a clearance fit. closure means connected to the casing and positioned within the casing bore. and means permitting limited movement of the sample tube with respect to the casing to actuate said closure means to substantially seal a core receiving end ofthe sample tube and prevent loss of the sample.
  • closure means comprises spring-loaded self-closing jaws.
  • closure means to seal the end of said sample tube comprises a separable unit retained within said sample tube casing and fixedly retained with respect to said casing by a removable nose piece of said casing.
  • Apparatus according to claim 1. including a hollow auger head having an openable closure on the head. said openable closure being sized and shaped and adapted to allow said sample tube casing containing said sample tube to pass thcrethrough.
  • said adaptor comprises at least one valve adjacent the other end of said sample tube, said valve being operative to permit egress of gases and/or liquids from said sample tube during sampling.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
US367290A 1972-06-09 1973-06-05 Core sampling device Expired - Lifetime US3878904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPA929072 1972-06-09

Publications (1)

Publication Number Publication Date
US3878904A true US3878904A (en) 1975-04-22

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ID=3765115

Family Applications (1)

Application Number Title Priority Date Filing Date
US367290A Expired - Lifetime US3878904A (en) 1972-06-09 1973-06-05 Core sampling device

Country Status (7)

Country Link
US (1) US3878904A (enrdf_load_stackoverflow)
JP (1) JPS4964487A (enrdf_load_stackoverflow)
DE (1) DE2329332A1 (enrdf_load_stackoverflow)
FR (1) FR2188043B3 (enrdf_load_stackoverflow)
GB (1) GB1394417A (enrdf_load_stackoverflow)
NL (1) NL7308074A (enrdf_load_stackoverflow)
ZA (1) ZA733751B (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4177624A (en) * 1977-10-06 1979-12-11 Kelpin Thomas G Aquatic plant sampler
US4605075A (en) * 1984-08-31 1986-08-12 Norton Christensen, Inc. Shrouded core catcher
US4606416A (en) * 1984-08-31 1986-08-19 Norton Christensen, Inc. Self activating, positively driven concealed core catcher
US4607710A (en) * 1984-08-31 1986-08-26 Norton Christensen, Inc. Cammed and shrouded core catcher
US4667754A (en) * 1985-11-12 1987-05-26 Diedrich Drilling Equipment, Inc. Flexible plug for obtaining soil samples during drilling operations
ES2162581A1 (es) * 1999-09-22 2001-12-16 Univ Valencia Politecnica Tomamuestras para materiales sedimentarios.
WO2015035147A1 (en) * 2013-09-06 2015-03-12 Baker Hughes Incorporated Coring tools including core sample flap catcher and related methods
US10415337B2 (en) 2018-01-11 2019-09-17 Saudi Arabian Oil Company Core catcher for unconsolidated sediment samples
US10428611B2 (en) 2017-12-27 2019-10-01 Saudi Arabian Oil Company Apparatus and method for in-situ stabilization of unconsolidated sediment in core samples
CN115613986A (zh) * 2022-10-29 2023-01-17 中国科学院武汉岩土力学研究所 一种碎裂岩体取样装置与方法
US20250059841A1 (en) * 2021-12-30 2025-02-20 China Petroleum & Chemical Corporation Coring tool, coring method, and application thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5431911B2 (enrdf_load_stackoverflow) * 1974-09-19 1979-10-11
DE2914977C2 (de) * 1979-04-12 1983-12-08 Kling-Bohrtechnik Gmbh, 8908 Krumbach Rammkernrohr
JPS5676030A (en) * 1979-11-27 1981-06-23 Shimizu Constr Co Ltd Collecting device of muddy water and sludge

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1655644A (en) * 1926-11-22 1928-01-10 Baker Casing Shoe Company Core retainer for core barrels
US2330157A (en) * 1942-08-01 1943-09-21 Reed Roller Bit Co Wire line core barrel
US2544993A (en) * 1947-05-19 1951-03-13 Eastman Oil Well Survey Co Drill bit
US3095051A (en) * 1961-11-24 1963-06-25 Raymond Concrete Pile Co Earth boring auger and sampler
US3136376A (en) * 1961-05-12 1964-06-09 Eli I Robinsky Cutter head for hollow stem auger
US3409094A (en) * 1967-05-31 1968-11-05 Navy Usa Spring actuated core retainer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1655644A (en) * 1926-11-22 1928-01-10 Baker Casing Shoe Company Core retainer for core barrels
US2330157A (en) * 1942-08-01 1943-09-21 Reed Roller Bit Co Wire line core barrel
US2544993A (en) * 1947-05-19 1951-03-13 Eastman Oil Well Survey Co Drill bit
US3136376A (en) * 1961-05-12 1964-06-09 Eli I Robinsky Cutter head for hollow stem auger
US3095051A (en) * 1961-11-24 1963-06-25 Raymond Concrete Pile Co Earth boring auger and sampler
US3409094A (en) * 1967-05-31 1968-11-05 Navy Usa Spring actuated core retainer

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4177624A (en) * 1977-10-06 1979-12-11 Kelpin Thomas G Aquatic plant sampler
US4605075A (en) * 1984-08-31 1986-08-12 Norton Christensen, Inc. Shrouded core catcher
US4606416A (en) * 1984-08-31 1986-08-19 Norton Christensen, Inc. Self activating, positively driven concealed core catcher
US4607710A (en) * 1984-08-31 1986-08-26 Norton Christensen, Inc. Cammed and shrouded core catcher
US4667754A (en) * 1985-11-12 1987-05-26 Diedrich Drilling Equipment, Inc. Flexible plug for obtaining soil samples during drilling operations
ES2162581A1 (es) * 1999-09-22 2001-12-16 Univ Valencia Politecnica Tomamuestras para materiales sedimentarios.
WO2015035147A1 (en) * 2013-09-06 2015-03-12 Baker Hughes Incorporated Coring tools including core sample flap catcher and related methods
US9856709B2 (en) 2013-09-06 2018-01-02 Baker Hughes Incorporated Coring tools including core sample flap catcher and related methods
US10202813B2 (en) 2013-09-06 2019-02-12 Baker Hughes Incorporated Coring tools including core sample flap catcher and related methods
US10428611B2 (en) 2017-12-27 2019-10-01 Saudi Arabian Oil Company Apparatus and method for in-situ stabilization of unconsolidated sediment in core samples
US10641055B2 (en) 2017-12-27 2020-05-05 Saudi Arabian Oil Company Apparatus and method for in-situ stabilization of unconsolidated sediment in core samples
US10774605B2 (en) 2017-12-27 2020-09-15 Saudi Arabian Oil Company Apparatus and method for in-situ stabilization of unconsolidated sediment in core samples
US10415337B2 (en) 2018-01-11 2019-09-17 Saudi Arabian Oil Company Core catcher for unconsolidated sediment samples
US20250059841A1 (en) * 2021-12-30 2025-02-20 China Petroleum & Chemical Corporation Coring tool, coring method, and application thereof
CN115613986A (zh) * 2022-10-29 2023-01-17 中国科学院武汉岩土力学研究所 一种碎裂岩体取样装置与方法

Also Published As

Publication number Publication date
FR2188043A1 (enrdf_load_stackoverflow) 1974-01-18
ZA733751B (en) 1974-04-24
JPS4964487A (enrdf_load_stackoverflow) 1974-06-21
DE2329332A1 (de) 1973-12-13
FR2188043B3 (enrdf_load_stackoverflow) 1976-06-11
GB1394417A (en) 1975-05-14
NL7308074A (enrdf_load_stackoverflow) 1973-12-11

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