WO2020034357A1 - 岩芯保真舱 - Google Patents
岩芯保真舱 Download PDFInfo
- Publication number
- WO2020034357A1 WO2020034357A1 PCT/CN2018/108978 CN2018108978W WO2020034357A1 WO 2020034357 A1 WO2020034357 A1 WO 2020034357A1 CN 2018108978 W CN2018108978 W CN 2018108978W WO 2020034357 A1 WO2020034357 A1 WO 2020034357A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- inner core
- fidelity
- core
- flap
- Prior art date
Links
- 239000011435 rock Substances 0.000 title claims abstract description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000003860 storage Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 239000002775 capsule Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
Definitions
- the invention relates to the field of oil and gas field exploration, in particular to a rock core fidelity capsule.
- cores are important data for discovering oil and gas layers and studying formations, oil layers, reservoirs, caps, structures, etc. Through the observation and study of cores, you can directly understand the lithology and physical properties of underground rocks. And oily, gas, aquatic characteristics.
- Coring is the use of special coring tools to pull underground rocks into the ground during drilling.
- This type of rock is called a core, which can be used to determine various properties of the rock and intuitively study the underground structure. And rock sedimentary environment, and understand the fluid properties.
- the core tools are drilled into the well, and the core samples are drilled and stored in the core storage compartment. During the ascent, environmental parameters such as the pressure of the core storage compartment will decrease, making the core unable to maintain its state in the in-situ environment.
- the invention aims to provide a core fidelity capsule, which can adjust the pressure in the capsule, and is beneficial to the core to maintain its state in the in-situ environment.
- the core fidelity capsule disclosed by the invention comprises an inner core cylinder and an outer core cylinder, the outer core cylinder is sleeved on the inner core cylinder, the upper end of the inner core cylinder is closed, and the inner core cylinder is provided with a device.
- There is a piston the piston radially cuts off the inner core cylinder, the upper end of the inner core cylinder is connected to one end of a pipeline, and the other end of the pipeline is connected to a liquid nitrogen storage tank, and a valve is arranged on the pipeline, and the liquid nitrogen storage tank is located outside Inside the coring cylinder, the outer coring cylinder is provided with a flap valve.
- a graphene layer is attached to an inner wall of the inner core cylinder.
- the upper part of the inner core tube is filled with a dripping film-forming agent.
- the flap valve includes a valve seat and a valve disc
- the valve disc includes an elastic sealing ring, an elastic connecting bar, a sealing member, and a plurality of locking bars arranged in parallel in sequence.
- the elastic connecting bar connects all the locking bars in series and All the lock bars are hooped together by the elastic sealing ring to form an integrated structure.
- the lock bar has a card slot adapted to the elastic seal ring.
- the elastic seal ring is installed in the card slot, and a seal is provided between two adjacent lock bars.
- One end of the valve flap is movably connected to the upper end of the valve seat through a limit hinge.
- valve flap is curved when it is not turned down, and the valve flap is in conformity with the outer wall of the inner core barrel; when it is turned down, the valve flap is flat and covers the upper end of the valve seat.
- a sealing cavity is provided on an inner wall of the outer coring cylinder, the flap valve is located in the sealing cavity, and the sealing cavity is in communication with the inner coring cylinder.
- a sealing ring is provided on the inner wall of the outer core barrel, and the sealing ring is located below the flap valve.
- the inner core barrel is made of PVC.
- the valve is an electronically controlled valve.
- the present invention can adjust the pressure in the cabin by pushing the piston with liquid nitrogen, which is beneficial for the core to maintain its state in the in-situ environment.
- the flap valve mechanism of the present invention can automatically close the fidelity compartment when the coring is completed, and has a simple structure, safety and reliability.
- the graphene layer of the present invention can reduce the sliding resistance of the rock core on the inside of the PVC pipe, at the same time improve the strength and surface accuracy of the inside, and enhance the thermal conductivity.
- the sealed cavity of the present invention can isolate the drilling fluid passing through the fidelity cavity.
- FIG. 1 is a schematic structural diagram of the present invention
- FIG. 2 is a schematic structural diagram of a flap valve when it is not turned down
- FIG. 3 is a schematic structural diagram of a flap valve when it has been turned down
- valve disc 4 is a schematic structural diagram of a valve disc
- FIG. 5 is a schematic structural diagram of a sealed cavity
- Fig. 6 is a partial cross-sectional view of an inner core barrel.
- the core fidelity capsule disclosed in the present invention includes an inner core cylinder 8 and an outer core cylinder 6.
- the inner core cylinder 8 is used for placing the core 1 and the outer core cylinder 6 is set inside.
- the inner core cylinder 8 is provided with a piston 7.
- the piston 7 radially separates the inner core cylinder 8.
- the upper end of the inner core cylinder 8 is connected to one end of the pipe and the other end of the pipe Connected to the liquid nitrogen storage tank 25, a valve 26 is provided on the pipeline.
- the liquid nitrogen storage tank 25 is located inside the outer core cylinder 6, and the outer core cylinder 6 is provided with a flap valve 3.
- the flap valve 3 includes a valve seat 36 and a valve disc 37
- the valve disc 37 includes an elastic sealing ring 34, an elastic connecting bar 32, a seal, and a plurality of parallel arrays in order.
- the lock strip 35 and the elastic connecting strip 32 connect all the lock strips 35 in series and hoop all the lock strips 35 together by the elastic seal ring 34 to form an integrated structure.
- the lock strip 35 has a slot 31 adapted to the elastic seal ring.
- An elastic seal ring 34 is installed in the slot 31, and a seal is provided between two adjacent lock bars 35.
- One end of the valve flap 3 is movably connected to the upper end of the valve seat 36 through a limit hinge 33.
- the valve flap 37 is In an arc shape, the valve flap 37 fits on the outer wall of the inner core barrel 8; the valve flap 37 is flat and covers the upper end of the valve seat 36 when it is turned down.
- a sealing cavity 37 is provided in the outer coring cylinder 6, and the flap valve 3 is located in the sealing cavity 37, and the sealing cavity is in communication with the inner coring cylinder.
- the inner core cylinder 8 is made of PVC.
- the inner wall of the inner core cylinder 8 is attached with a graphene layer 81.
- the upper part of the inner core cylinder 8 is filled with a drip film-forming agent 82, which is located below the piston 7. .
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
- Manufacturing Of Micro-Capsules (AREA)
Abstract
Description
Claims (9)
- 岩芯保真舱,其特征在于:包括内取芯筒和外取芯筒,所述外取芯筒套在内取芯筒上,所述内取芯筒上端封闭,内取芯筒的设有活塞,所述活塞径向隔断内取芯筒,内取芯筒上端连接管道的一端,所述管道的另一端连接液氮存储罐,管道上设有阀门,所述液氮存储罐位于外取芯筒内,所述外取芯筒设有翻板阀。
- 根据权利要求1所述的岩芯保真舱,其特征在于:所述内取芯筒的内壁附着石墨烯层。
- 根据权利要求2所述的岩芯保真舱,其特征在于:所述内取芯筒上部填充滴水成膜剂。
- 根据权利要求1-3任意一项所述的岩芯保真舱,其特征在于:所述翻板阀包括阀座和阀瓣,所述阀瓣包括弹性密封圈、弹性连接条、密封件和多个依次平行排列的锁条,弹性连接条将所有锁条串连并由弹性密封圈将所有锁条箍在一起形成整体结构,锁条上有与弹性密封圈适配的卡槽,弹性密封圈装在卡槽中,相邻两个锁条间设有密封件,阀瓣一端通过限位铰链活动连接在阀座上端。
- 根据权利要求4所述的岩芯保真舱,其特征在于:所述阀瓣在未翻下时为弧形,阀瓣与内取芯筒的外壁贴合;阀瓣在翻下时为平面并盖住阀座上端。
- 根据权利要求4所述的岩芯保真舱,其特征在于:所述外取芯筒内壁设有密封腔,所述翻板阀位于密封腔,所述密封腔与内取芯筒连通。
- 根据权利要求4所述的岩芯保真舱,其特征在于:所述外取芯筒内壁设有密封圈,所述密封圈位于翻板阀的下方。
- 根据权利要求4所述的岩芯保真舱,其特征在于:所述内取芯筒为PVC材质。
- 根据权利要求1所述的岩芯保真舱,其特征在于:所述阀门为电控阀。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810917805.0 | 2018-08-13 | ||
CN201810917805.0A CN109113610A (zh) | 2018-08-13 | 2018-08-13 | 岩芯保真舱 |
Publications (1)
Publication Number | Publication Date |
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WO2020034357A1 true WO2020034357A1 (zh) | 2020-02-20 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/CN2018/108978 WO2020034357A1 (zh) | 2018-08-13 | 2018-09-30 | 岩芯保真舱 |
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CN (1) | CN109113610A (zh) |
WO (1) | WO2020034357A1 (zh) |
Families Citing this family (10)
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CN111485854A (zh) * | 2020-04-27 | 2020-08-04 | 四川大学 | 一种矿山用内防喷保瓦斯接头 |
CN111502579A (zh) * | 2020-04-27 | 2020-08-07 | 四川大学 | 一种自动报警的坑道保压取芯装备 |
CN111550205A (zh) * | 2020-04-27 | 2020-08-18 | 深圳大学 | 一种用于坑道取芯装备的报警装置 |
CN111894502B (zh) * | 2020-07-28 | 2023-03-10 | 四川大学 | 气体作为流体介质的坑道取芯方法 |
CN111810072A (zh) * | 2020-07-28 | 2020-10-23 | 四川大学 | 一种连续导管式取芯设备 |
CN113216887B (zh) * | 2021-03-31 | 2022-04-01 | 深圳大学 | 一种翻板阀磁力闭合模拟装置 |
CN113236164B (zh) * | 2021-03-31 | 2023-07-25 | 深圳大学 | 一种磁力触发装置的夹紧机构及翻板阀磁力闭合模拟装置 |
CN113803009B (zh) * | 2021-09-30 | 2022-05-10 | 四川大学 | 一种用于大型率定岩样的高温高压环境模拟舱 |
CN113969757B (zh) * | 2021-09-30 | 2022-07-29 | 四川大学 | 一种用于保真取芯器运行的高温高压环境模拟舱体结构 |
CN114838984A (zh) * | 2022-05-31 | 2022-08-02 | 深圳大学 | 一种保真取芯装置及月球探测*** |
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2018
- 2018-08-13 CN CN201810917805.0A patent/CN109113610A/zh active Pending
- 2018-09-30 WO PCT/CN2018/108978 patent/WO2020034357A1/zh active Application Filing
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