US3621924A - Soft formation core barrel - Google Patents

Soft formation core barrel Download PDF

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Publication number
US3621924A
US3621924A US22251A US3621924DA US3621924A US 3621924 A US3621924 A US 3621924A US 22251 A US22251 A US 22251A US 3621924D A US3621924D A US 3621924DA US 3621924 A US3621924 A US 3621924A
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core
fluid
sleeve
pressure
volume
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US22251A
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Maurice P Lebourg
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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
    • E21B25/18—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being specially adapted for operation under water
    • 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
    • E21B25/06—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver having a flexible liner or inflatable retaining means

Definitions

  • Pirkey, Frank Vaden, and Robert 27 Claims 6 Drawing Figs. [52] [1.5. CI 175/58, ABSTRACT: A core barrel device for producing and retrievl75/243, 175/245, l75/20 ing subterranean cores, particularly from soft or uncon- [51] int. Cl E2lb 9/20, solidated formations, utilizes a fluid-pressure collapsible 13211) /00 sleeve above the corer to receive and hold the core material Field of Search 175/58, 20, and permit its retrieval in its original subterranean condition.
  • the instant invention relates to a method and apparatus for producing and retrieving subterranean cores. More particularly, the instant invention relates to the method and apparatus for obtaining subterranean cores from soft or unconsolidated formations in a condition which is properly representative of the strata in the formation.
  • Soft formation core barrels have been developed in the prior art for the purpose of maintaining the integrity of an unconsolidated formation core.
  • these core barrels have involved apparatus wherein an elastic sleeve is adapted to move upwardly into a tubular member and encase the core as the core enters the tubular member.
  • Such apparatuses impress a columnar load on the core inasmuch as the upward force of the core is required to move the sleeve.
  • these devices suffer disadvantages since there is no effective way to close the elastic sleeve and prevent the core material from disintegrating and falling from the core barrel during retrieval of the core and since the moving parts of a core barrel of this nature can become jammed and inoperative during use.
  • the method of the instant invention which comprises cutting a subterranean core formation to produce a core, accepting the core axially into a collapsible sleeve, supplying a fluid pressure on the outer surface of the sleeve to collapse the sleeve above the core, and controlling the fluid pressure behind the sleeve to permit yieldable expansion of the sleeve from the collapsed position to an expanded position to accept the core.
  • This method is accomplished by a novel and unique apparatus for producing and retrieving subterranean cores, particularly cores of unconsolidated formations
  • apparatus comprises a means for cutting the formation to produce a core, a collapsible sleeve means disposed above the cutting means for internally receiving the core produced, and means for producing the fluid pressure on the outer surface of the sleeve, which fluid pressure is greater than the fluid pressure within the sleeve to maintain the sleeve in a collapsed position until the core is received within the sleeve.
  • Pressure valves are provided to maintain the sleeve in collapsed position above the core but to exhaust fluid behind the sleeve as the core enters the sleeve and expands it.
  • the novel apparatus of this invention utilizes a coring device wherein fluid flow in the vicinity of the cutting means is utilized to assist in eroding the formation and forming the core and wherein the pressure drop resulting from the restriction flow of such fluid to the cutting region across the tool itself is utilized to provide the pressure differential for collapsing a sleeve and moving an intact column of core material into the tube so that it might be later extracted for examination.
  • the fluid pressure on the sleeve of the coring apparatus of this invention may be maintained throughout the coring operation, in most circumstances without providing an independent pressure line with a source of pressure to the tool.
  • Control of fluid pressure behind the collapsible sleeve accomplished by appropriate valves assures that the fluid pressure behind the sleeve is greater than the fluid pressure within the sleeve by a preselected amount so that the sleeve serves to yieldably accept the coring operation to capture the core without crumbling or disintegration.
  • fluid pressure as used herein with reference to a pressure on the collapsible sleeve of the coring apparatus of this invention includes pressure which may be supplied by a liquid or a gaseous fluid.
  • a usually liquid drilling fluid is used to exert the fluid pressure to collapse the sleeve.
  • gas drilling e.g., air drilling
  • novel apparatus and method of the instant invention may be adapted to producing and retrieval of cores during rotary drilling, as well as the production and retrieval of subterranean cores using coring techniques which do not involve rotary drilling.
  • FIG. 1A is a partial, sectional view of the upper portion of a specific embodiment of a core barrel apparatus in accordance with this invention which may be used in rotary coring techniques.
  • FIG. 1B is a partially sectional view of the bottom portion of the same embodiment of coring apparatus shown in F 16. 1A.
  • FIG. 2 is a sectional view of the coring apparatus of the instant invention showing the position of the collapsible sleeve during the core retrieval of the operation.
  • FIG. 3 is a sectional view along line 3-3 of FIG. 2 showing the configuration of the collapsible sleeve in its collapsed state.
  • FIG. 4 is a cross-sectional view of an alternate embodiment of a sleeve which may be used in accordance with the coring apparatus of the instant invention.
  • FIG. 5 is an illustration of another embodiment of a coring apparatus for use in nonrotary coring techniques and suitable for use in obtaining cores from the subsurface under a body of water.
  • the coring apparatus 100 is adapted to be lowered to the bottom A of a well bore B by means of a string of pipe, the lowermost section of which is illustrated as 11.
  • the lower end of pipe section is threadedly attached to the upper end of outer mandrel 13 of the coring apparatus.
  • Lower pipe section 11 and upper mandrel member 13 together define central channel 15 through which drilling fluid, such as drilling mud, may be circulated down the drill string to the coring bit.
  • Fluid passage 17 in the lower portion of mandrel 13 directs the fluid through the coring apparatus as will be explained below.
  • outer mandrel 13 is threaded with an inner tubular sleeve 29 which together with bore 38 in the lower end of mandrel 13, forms a cylindrical recess which accommodates the upper end 40 ofinner mandrel 39.
  • the inner surface of tubular sleeve 29 is provided with bearing surfaces 31 which define a race for bearings such as 33 and 34. These bearings serve to suspend inner mandrel 39 from outer mandrel 13. Additional bearing surfaces 41 on the outer surface of inner mandrel 39 complete the race for the bearings and together with the bearings support inner mandrel 39 to freely rotate with respect to outer mandrel 13 and the drill string 11.
  • Other bearing arrangements can be used as will be obvious to those skilled in the art.
  • Valve 43 is typically of the type involving a ball adapted to move downwardly into a companion seat 42 to block the passage in tubular extension 36 and prevent downward flow of fluid into the inner core barrel.
  • the ball is adapted to move upwardly from its seat to permit fluid within the inner core barrel to exhaust as the core advances in the inner core barrel.
  • valve 49 in response to a positive pressure gradient of sufiicient magnitude between fluid channel 20 and chamber 71, valve 49 will open and permit flow ofdrilling fluid through passageway 50 and through valve 49 to chamber 71 until a pressure gradient less than the setting of valve 49 is achieved.
  • valve 79 in response to a negative pressure gradient of sufficient magnitude between chamber 71 and channel 20, valve 79 will open and exhaust fluid from chamber 71 to fluid channel 20.
  • Valve 49 is preset to open to fill annular volume 67 in response to a pressure gradient which is lower than the pressure gradient at which valve 79 is set to open.
  • the function and operation of these valves as well as the function of the pressure settings therefor will be understood with reference to the following explanation of the operation of the apparatus illustrated.
  • drilling string 11 is rotated to effect rotation of coring bit 30.
  • drilling fluid such as an appropriate water or oil base drilling mud is circulated downwardly through channel 15 and through passageway 17 to annular fluid channel 20.
  • the dynamic fluid pressure i.e., fluid pressure not including increases due to increase of hydrostatic head
  • This drop is dynamic pressure results from frictional loss in annular channel 20 between these two points.
  • a small series of channels illustrated at 61 communicate between annular channel 68 and the interior of the core, however, and a serve to equalize the fluid pressure between the interior of the core barrel and the fluid exiting from channel 59 and circulating upwardly around the drill bit as illustrated by arrow F.
  • the dynamic fluid pressure within the' core 60 will be equal to essentially P
  • a circulation of fluid is commenced and immediately there is pressure buildup at point p, opposite passageway 50 of sufficient magnitude to open valve 49 and permit the flow of fluid into volume 71 and through channel 67 to the volume 67 between core barrel 47 and sleeve 53.
  • Sleeve 53 is so constructed that the unsupported portion between crimping ring 58 and sleeve support 55 collapses in response to the fluid pressure behind the sleeve in volume 67.
  • FIG. 3 An illustration of a typical embodiment of sleeve 53 in collapsed condition is illustrated in FIG. 3 which will be more fully discussed hereinafter.
  • exhaust valve 79 which communicates with chamber 71 and ultimately with volume 67 is set to open at a higher pressure gradient than the setting of valve 49.
  • valve 49 might be said to open at a positive pressure gradient of 2pounds per square inch between annular channel 20 and chamber 71 whereas valve 79 would be said to exhaust chamber 71 only if a -pound per square inch negative pressure gradient between channel and chamber 71 is achieved. Therefore, the combination of inlet check valve 49 and outlet check valve 79 enables the storage of fluid under pressure at a predetermined level within volume 67 behind sleeve 53.
  • exhaust check valve 79 although it must be slightly greater than the setting of inlet check valve 49 should not be so great as to result in a pressure on core 60 which crushes or deforms the core as the core enters the core barrel and attempts to open the collapsed sleeve.
  • FIG. 2 of the appended drawings there is illustrated the unique operation of the novel apparatus of this invention during the retrieval of an unconsolidated core.
  • sealing off the core circulation can be discontinued and the fluid pressure within volume 67 is suflicient to support the core during retrieval operation.
  • circulation of fluid is preferably increased to assure that the full pressure gradient across the sleeve permitted by the settings of inlet valve 49 and exhaust valve 79. This will in turn assure a pinching at the bottom of the sleeve in response to any of the lower portions of the core which falls from the core barrel.
  • valve combination functions to c0ntinually maintain a fluid pressure within volume 67 greater than the fluid pressure within the core, maintaining the sleeve in its pinched position as shown at 75 in FIG. 2.
  • sleeve 53 in accordance with one embodiment of this invention in collapsed condition.
  • sleeve 53 is collapsed from two points on the periphery thereof at points 83 and 85.
  • Sleeve 53 is constructed so that it is dimensionally stable in a longitudinal direction and so that entry of the core into the sleeve does not cause a longitudinally stretching of the sleeve.
  • sleeve 53 is not elastic in nature. It is not necessary or preferred in the instant novel apparatus to utilize an elastic member since the support of the core can be accomplished with a nonstickin g, nonelastic member which demonstrates the desirable qualities of collapsibility.
  • the sleeve is shown to have two longitudinally extending stabilizing cables 87 and 89 which extend through the sleeves and tend to make the sleeve preferentially collapse in the fashion shown. If in mounting the sleeve between support member 37 and crimping ring 58, the sleeve is pulled taut rendering cables 87 and 89 taut, the sleeve will preferentially collapse as shown in FIG. 3.
  • the sleeve may be arranged so that to assume other configurations such as three-point or four-point configurations with cables running longitudinally at the apex of each extension of the sleeve in its collapsed condition.
  • FIG. 4 there is shown an alternate embodiment of a collapsible sleeve in collapsed condition.
  • the sleeve shown in FIG. 4 is constructed as a cylindrical tube out of two elongated panels 91 and 93 of a suitable flexible and collapsible material.
  • the sleeve material is preferably stable in the longitudinal direction.
  • the sleeve in FIG. 4 is constructed by overlapping each of the two panels at the ends thereof and fusing the panels together at that point, for example, by thermal bonding a suitable fiber reinforced plastic.
  • the resultant sleeve has an effective double thickness of material at points 95 and 97, and consequently, if stretched taut as pointed out above, will preferably collapse with the double thicknesses at the apices of the sleeve in its collapsed configuration.
  • FIGS. 1 and 2 has been disclosed for operation utilizing fluid pressure of the drilling fluid to collapse the sleeve, the concepts of this invention can be equally applied using fluid pressure in the form of a gaseous medium to collapse the sleeve member 53.
  • fluid pressure in the form of a gaseous medium to collapse the sleeve member 53.
  • air or a similar gas can be conducted to the coring bit as is the drilling fluid.
  • an independent source of compressed fluid could be provided in the tool or a line carrying a compressed fluid, gas or liquid, could be separately run to the tool from the surface. The operation of the tool in the latter fashion in a deep borehole would not be practical.
  • FIG. 5 there is illustrated a coring apparatus in accordance with this invention for the recovery of a nonconsolidated core from beneath a body of water.
  • a coring apparatus in accordance with this invention for the recovery of a nonconsolidated core from beneath a body of water.
  • formations of an unconsolidated nature are often encountered, thus making it difficult to recover the core in an intact condition for examination.
  • the method of coring a submarine surface varies as to equipment.
  • Some coring apparatuses utilize a simple weight operated core, such as illustrated in FIG. 5.
  • Other more elaborate hydraulic units may be used whereby a core barrel is hydraulically pushed into the submarine surface.
  • a propellant may be used to force the core barrel to penetrate the submarine surface.
  • a weight 101 has pushed the coring to 103 into the submarine surface formation 108.
  • the coring tube is provided with a collapsible sleeve 107, typically of the configuration as illustrated in FIG. 3, which is anchored at each end to provide a fluidtight seal at 106 and 109.
  • a differential piston 104 is maintained in the weight member 101 and communicates with the annulus 111 between sleeve I07 and the coring tube 103. Differential piston exerts a pressure above the hydrostatic pressure and check valve 102 traps this differential pressure in the annulus.
  • An exhaust check valve is provided to exhaust fluid when the core expands the sleeve and is rated at a pressure above the pressure rating of inlet check valve 102.
  • the coring and capture of the core are effected substantially as above with the pressure hehind sleeve 107 serving to pinch in the bottom portion of the sleeve after the apparatus is first lifted.
  • valve 105 When bringing the tool to the surface, valve 105 maintains, without excess, the pressure required to hold the core in the sleeve inasmuch as it will slowly exhaust as the hydrostatic head above the tool is reduced.
  • differential pressure provided by differential piston 4 could also be provided directly from the surface by a pressure line.
  • a coring device satisfactory for taking sand cores from beaches or the like could be readily constructed for manipulation by hand wherein the coring tube could be pressed into the beach sand by hand.
  • fluid jets at the point of cutting means can be used to assist the penetration of the coring tube as is well known in the art.
  • a number of apparatuses may accordingly be constructed to perform the method of this invention for producing and retrieving a formation core which method involves cutting the formation to produce the core and accepting the core axially into a collapsible sleeve, supplying a fluid pressure on the outer surface of the sleeve to collapse the sleeve above the core and controlling that fluid pressure behind the sleeve to permit a yieldable expansion of the sleeve from the collapsed position to an expanded position to accept the core.
  • the novel method of this invention further involves in particular reference to carrying out this invention in rotary drilling methods, establishing a loss of dynamic fluid pressure from a point above the bottom of the hole (upstream in the fluid path) to a point proximate the bottom of the hole, equalizing the dynamic fluid pressure at the bottom of the borehole with the dynamic fluid pressure around the core, and utilizing the higher pressure to support and trap the core during retrieval operation.
  • This method is accomplished by establishing a fluid flow path which produces a dynamic fluid pressure loss in the fluid flowing to the coring bit, directing a circulating drilling fluid through this channel, and collapsing the sleeve by means of the pressure differential in the circulating fluid produced by flow through such fluid flow path.
  • the apparatuses of this invention may be varied in constructional detail as will be apparent to those skilled in the art.
  • FIG. 18 wherein one inlet and one exhaust check valve are illustrated, it might be desirable to place a total of four check valves to function as two inlet valves and two exhaust valves.
  • the lower portion of the sleeve in the area anticipated collapse upon retrieval of the core could be advantageously provided with a thinner wall section or with other means which would cause the sleeve preferentially to collapse in that region and support the core during retrieval.
  • Apparatus for producing and retrieving a formation core which comprises:
  • a collapsible sleeve means disposed above said cutting means for internally receiving the core produced; means for introducing a fluid under pressure on the outer surface of said sleeve greater than the fluid pressure within said sleeve for maintaining said sleeve in a collapsed position until the core is received therein;
  • the apparatus ofclaim 1 including:
  • the apparatus of claim 2 including means for introducing a fluid to said volume at a pressure greater than the fluid pressure within said sleeve means.
  • the apparatus ofclaim 2 including fluid channel means in said core barrel structure for directing a drilling fluid to the region of said cutting means.
  • first valve means disposed between said channel means and said volume to admit fluid to said volume at a first fluid pressure level
  • second valve means disposed between said channel means and said volume to exhaust fluid from said volume at a second fluid pressure level wherein said second fluid pressure level is greater than said first fluid pressure level.
  • the apparatus of claim including fluid jet means in said cutting means communicating with said fluid channel means, said jet means being disposed to direct fluid toward the formation around the core to assist in cutting and forming the core.
  • said sleeve means includes at least two longitudinally disposed reinforcing means arranged at spaced positions at the periphery of said sleeve means to permit said sleeve means to collapse from at least said position on its periphery.
  • An apparatus for producing and retrieving subterranean formation cores which comprises:
  • cutting means disposed at the lower portion of said core barrel means for cutting said core
  • collapsible sleeve means disposed within said core barrel means above said cutting means and defining a volume between the outer surface of said sleeve means and said core barrel, wherein fluid may be maintained under pressure;
  • first valve means to maintain a fluid within said volume at a preselected pressure greater than the fluid pressure within said sleeve to maintain said sleeve in collapsed position until said core is received therein;
  • second valve means to exhaust fluid from said volume in response to decrease of said volume resulting from said core entering said sleeve.
  • tubular core barrel means comprises an outer barrel and an inner barrel defining a fluid channel therebetween, and wherein said first and second valve means communicate between said channel and said volume.
  • the apparatus of claim 11 including means for exhausting fluid from said volume to said fluid channel means when said core enters said sleeve.
  • said means for admitting fluid and said means for exhausting fluid comprise first and second one-way check valves which open at predetermined pressure gradients, and wherein the pressure gradient required to open said second valve is greater than that required to open said first valve.
  • the apparatus of claim 11 including fluid jet means in said cutting means communicating with said fluid channel means, said fluid jet means being disposed to direct fluid against the formation around the core to assist in the cutting and formation of said core.
  • said means for admitting fluid is located at first position in said fluid channel means and including pressure equalizing means located at a second position in said fluid channel means downstream from said first position, said pressure equalizing means communicating between said fluid channel means and the interior of said sleeve to equalize fluid channel means and the interior of said sleeves to equalize fluid pressure therebetween.
  • the apparatus of claim 10 including at least two longitudinal reinforcing means disposed around the periphery of said sleeve at regularly spaced positions and adapted to maintain the outer surface of said sleeve proximate to the inner surface of said inner barrel at said positions and permitting said sleeve means to collapse from said positions on its periphery in response to fluid pressure within said volume.
  • Apparatus for producing and retrieving a formation core by rotary drilling which comprises:
  • a core barrel structure comprising an outer barrel and an inner barrel defining a fluid channel therebetween, said outer barrel being freely rotatable relative to said inner barrel;
  • a cutting means mounted on the lower portion of said outer barrel and rotatable with said outer barrel for cutting the fonnation to produce a core, said cutting means providing the termination of said fluid channel means;
  • a tubular, collapsible sleeve disposed within said inner barrel above said cutting means for internally receiving the core produced, said sleeve means defining a volume between the outer surface thereof and said inner barrel;
  • first check valve means for admitting fluid from a first position in said channel to said volume at a first pressure greater than the fluid pressure within said sleeve to collapse said sleeve prior to receipt or the core therein;
  • second check valve means for exhausting fluid from said volume to said channel at a second pressure greater than said first pressure, said second pressure being insufficient to deform said core
  • pressure equalization means disposed to equalize the fluid pressure between a second position in said channel downstream of said first position and the volume within said sleeve.
  • Apparatus for producing and retrieving formation cores from beneath the surface of a body of water which comprises:
  • a collapsible sleeve disposed within said tube, said sleeve defining a sealable volume capable of retaining a fluid under pressure
  • differential pressure means to supply a fluid to said volume at a fluid pressure greater than hydrostatic pressure
  • exhaust check valve means disposed to exhaust fluid within said volume to said body of water, said check valve being openable in response to a preselected gradient between said pressure within said volume and hydrostatic pressure.
  • a method for producing and retrieving a formation core which comprises:
  • the method of claim 20 including the step of circulating a fluid to the formation in the cutting region to assist in cutting said core.
  • a method for producing and retrieving a formation core from a borehole which comprises:

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  • 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)
  • Earth Drilling (AREA)
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US22251A 1970-03-24 1970-03-24 Soft formation core barrel Expired - Lifetime US3621924A (en)

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US (1) US3621924A (enrdf_load_stackoverflow)
CA (1) CA951713A (enrdf_load_stackoverflow)
DE (1) DE2113817A1 (enrdf_load_stackoverflow)
FR (1) FR2088255B1 (enrdf_load_stackoverflow)
GB (1) GB1343808A (enrdf_load_stackoverflow)

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US3768580A (en) * 1971-10-26 1973-10-30 Stichting Waterbouwkundig Lab Apparatus for taking an undisturbed soil sample
US3872935A (en) * 1974-04-30 1975-03-25 Us Agriculture Apparatus and method for obtaining undisturbed soil core samples
US3949819A (en) * 1974-07-10 1976-04-13 Evgeny Ivanovich Tanov Soil sampling device
US3986555A (en) * 1975-04-10 1976-10-19 Dresser Industries, Inc. Apparatus for providing a packaged core
US4659257A (en) * 1984-10-29 1987-04-21 Funderingstechnieken Verstraeten B.V. Method for making a hole in the ground, and hollow body open at the lower and upper sides and adapted for use in this method
US4705118A (en) * 1984-03-16 1987-11-10 Ennis Melvyn S J Hammer for use in a bore hole and apparatus for use therewith
US4852668A (en) * 1986-04-18 1989-08-01 Ben Wade Oakes Dickinson, III Hydraulic drilling apparatus and method
US6116358A (en) * 1996-01-15 2000-09-12 Baroid Technology, Inc. Core sampler
EP1076154A3 (en) * 1999-06-17 2001-05-09 Corpro Systems Limited Apparatus for handling geological samples
US6390206B1 (en) * 1997-08-22 2002-05-21 Aardal Kaare Core sampler
US7055626B2 (en) * 2002-03-15 2006-06-06 Baker Hughes Incorporated Core bit having features for controlling flow split
EP1715137A1 (en) * 2005-04-22 2006-10-25 Corpro Systems Limited Sealed core barrel
US20120325559A1 (en) * 2011-06-22 2012-12-27 Conocophillips Company Core capture and recovery from unconsolidated or friable formations and methods of use
US20130081878A1 (en) * 2011-10-03 2013-04-04 National Oilwell Varco., L.P. Methods and Apparatus for Coring
US20140027182A1 (en) * 2012-07-26 2014-01-30 National Oilwell Varco, L.P. Telescoping core barrel
US20190040701A1 (en) * 2016-03-03 2019-02-07 Halliburton Energy Services, Inc. Inner barrel crimping connection for a coring tool
CN113175307A (zh) * 2021-04-29 2021-07-27 四川大学 一种旋转密封提芯机构
CN113622849A (zh) * 2021-10-14 2021-11-09 陕西太合智能钻探有限公司 一种密闭取心钻具
CN114233227A (zh) * 2022-02-24 2022-03-25 陕西太合智能钻探有限公司 一种取芯钻具密封装置
CN115788341A (zh) * 2022-09-09 2023-03-14 四川大学 一种月基极端环境随钻成膜保真取芯装置

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GB2000824B (en) * 1977-07-06 1982-05-19 American Coldset Corp Method and core barrel apparatus for obtaining and retrieving subterranean formation samples
CH639459A5 (de) * 1979-07-11 1983-11-15 Max Hug Erdbohreinrichtung zur entnahme von bodenproben.
BE1008473A5 (fr) * 1994-07-06 1996-05-07 Baroid Technology Inc Procede de fermeture d'un troncon de tube interne de carottier et carottier mettant en oeuvre le procede.
CN111411912A (zh) * 2019-04-19 2020-07-14 中国石油天然气股份有限公司 火驱地层钻井取心方法及其钻井取心装置
CN115126433B (zh) * 2022-07-22 2023-06-20 平顶山天安煤业股份有限公司 适用于松软地层的插入式保压取芯器及其使用方法

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US2927776A (en) * 1958-03-07 1960-03-08 Jersey Prod Res Co Coring apparatus
US3511324A (en) * 1965-04-14 1970-05-12 Stichting Waterbouwkundig Lab Method and sampler for taking an undisturbed soil sample
US3349857A (en) * 1965-07-16 1967-10-31 Exxon Production Research Co Coring apparatus
US3383131A (en) * 1966-07-27 1968-05-14 Navy Usa Core sampler
US3480093A (en) * 1968-01-04 1969-11-25 Continental Oil Co Total recovery core catcher
US3525409A (en) * 1968-12-12 1970-08-25 Shell Oil Co Core barrel closure for sonic drill

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768580A (en) * 1971-10-26 1973-10-30 Stichting Waterbouwkundig Lab Apparatus for taking an undisturbed soil sample
US3872935A (en) * 1974-04-30 1975-03-25 Us Agriculture Apparatus and method for obtaining undisturbed soil core samples
US3949819A (en) * 1974-07-10 1976-04-13 Evgeny Ivanovich Tanov Soil sampling device
US3986555A (en) * 1975-04-10 1976-10-19 Dresser Industries, Inc. Apparatus for providing a packaged core
US4705118A (en) * 1984-03-16 1987-11-10 Ennis Melvyn S J Hammer for use in a bore hole and apparatus for use therewith
US4659257A (en) * 1984-10-29 1987-04-21 Funderingstechnieken Verstraeten B.V. Method for making a hole in the ground, and hollow body open at the lower and upper sides and adapted for use in this method
US4852668A (en) * 1986-04-18 1989-08-01 Ben Wade Oakes Dickinson, III Hydraulic drilling apparatus and method
US6116358A (en) * 1996-01-15 2000-09-12 Baroid Technology, Inc. Core sampler
US6390206B1 (en) * 1997-08-22 2002-05-21 Aardal Kaare Core sampler
EP1076154A3 (en) * 1999-06-17 2001-05-09 Corpro Systems Limited Apparatus for handling geological samples
US6425447B1 (en) 1999-06-17 2002-07-30 Corpo Systems Limited Apparatus for handling geological samples
US7055626B2 (en) * 2002-03-15 2006-06-06 Baker Hughes Incorporated Core bit having features for controlling flow split
US7600580B2 (en) 2005-04-22 2009-10-13 Corpro Systems Limited Sealed core sample barrel
EP1715137A1 (en) * 2005-04-22 2006-10-25 Corpro Systems Limited Sealed core barrel
US20060237232A1 (en) * 2005-04-22 2006-10-26 Corpro Systems Limited Sealed barrel
US9518463B2 (en) * 2011-06-22 2016-12-13 Conocophillips Company Core capture and recovery from unconsolidated or friable formations and methods of use
US20120325559A1 (en) * 2011-06-22 2012-12-27 Conocophillips Company Core capture and recovery from unconsolidated or friable formations and methods of use
US20130081878A1 (en) * 2011-10-03 2013-04-04 National Oilwell Varco., L.P. Methods and Apparatus for Coring
US9217306B2 (en) * 2011-10-03 2015-12-22 National Oilwell Varco L.P. Methods and apparatus for coring
US20140027182A1 (en) * 2012-07-26 2014-01-30 National Oilwell Varco, L.P. Telescoping core barrel
US20190040701A1 (en) * 2016-03-03 2019-02-07 Halliburton Energy Services, Inc. Inner barrel crimping connection for a coring tool
US10767431B2 (en) * 2016-03-03 2020-09-08 Halliburton Energy Services, Inc. Inner barrel crimping connection for a coring tool
CN113175307A (zh) * 2021-04-29 2021-07-27 四川大学 一种旋转密封提芯机构
CN113175307B (zh) * 2021-04-29 2022-04-15 四川大学 一种旋转密封提芯机构
CN113622849A (zh) * 2021-10-14 2021-11-09 陕西太合智能钻探有限公司 一种密闭取心钻具
CN114233227A (zh) * 2022-02-24 2022-03-25 陕西太合智能钻探有限公司 一种取芯钻具密封装置
CN115788341A (zh) * 2022-09-09 2023-03-14 四川大学 一种月基极端环境随钻成膜保真取芯装置
CN115788341B (zh) * 2022-09-09 2024-05-10 四川大学 一种月基极端环境随钻成膜保真取芯装置

Also Published As

Publication number Publication date
FR2088255B1 (enrdf_load_stackoverflow) 1975-02-21
GB1343808A (en) 1974-01-16
DE2113817A1 (de) 1971-10-21
CA951713A (en) 1974-07-23
FR2088255A1 (enrdf_load_stackoverflow) 1972-01-07

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