CN114876394B - Backflushing backflow buffer device for core collection - Google Patents
Backflushing backflow buffer device for core collection Download PDFInfo
- Publication number
- CN114876394B CN114876394B CN202210443393.8A CN202210443393A CN114876394B CN 114876394 B CN114876394 B CN 114876394B CN 202210443393 A CN202210443393 A CN 202210443393A CN 114876394 B CN114876394 B CN 114876394B
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- CN
- China
- Prior art keywords
- backflushing
- buffer device
- backflow
- device shell
- backflow buffer
- Prior art date
- 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.)
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- 239000011435 rock Substances 0.000 claims abstract description 15
- 230000003139 buffering effect Effects 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 14
- 239000002893 slag Substances 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- 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)
- Check Valves (AREA)
Abstract
The invention discloses a core collecting backflushing backflow buffer device which comprises a backflushing backflow buffer device shell, a spring, a rubber pad, a split flow pipe, a flange plate, a ball valve and a pipeline, wherein the backflushing backflow buffer device shell comprises a backflushing backflow buffer device shell upper part, a backflushing backflow buffer device shell middle part and a backflushing backflow buffer device shell lower part, a drainage port is formed in the left side of the backflushing backflow buffer device shell upper part, the spring and the rubber pad are sequentially fixed in the backflushing backflow buffer device shell upper part, the backflushing backflow buffer device shell middle part is connected to the backflushing backflow buffer device shell upper part lower end, a backflushing port I is formed in the backflushing backflow buffer device shell middle part upper left side, a backflushing port I is formed in the lower right side, and the backflushing port I is connected to the ball valve upper end through the flange plate and the pipeline. The rock core buffering and decelerating device is simple in structure, can buffer and decelerate the rock core which returns at a high speed, ensures that the collected rock core is intact, and avoids damage of the rock core in a high-speed state.
Description
Technical Field
The invention relates to the technical field of drilling construction, in particular to a core collection backflushing backflow buffer device.
Background
The gas lift reverse circulation drilling process is characterized in that compressed air is sprayed into an inner pipe from a mixer through an air tap or an air box through annular gaps between the inner pipe and the outer pipe of a double-wall active drill pipe and a double-wall drill pipe to form countless small bubbles, the bubbles rapidly rise along the inner pipe and expand simultaneously, low-specific gravity gas-water mixed liquid is formed at the upper part of the mixer due to the fact that the compressed air continuously enters well liquid, the liquid in the well has high specific gravity, the gas-water mixed liquid of the inner pipe flows upwards under the action of pressure difference according to a communicating vessel principle, rock cores or rock scraps at the bottom of the hole are continuously brought out of the ground surface, and the gas lift reverse circulation drilling process is widely applied to the construction fields of wells, geothermal wells and the like at present. However, the gas lift reverse circulation coring process is a new process method, the related supporting equipment is not perfect at present, the three-phase flow of which the slag inlet pipe returns to high speed in the gas lift reverse circulation coring process comprises air, slurry, rock slag and a core, and for geological research, only the core in the gas lift reverse circulation coring process needs to be separated and removed, and the core is damaged by the traditional separation method due to the fact that the speed of the returned three-phase flow is high, the later geological research is influenced, manual operation is relied on, the working efficiency is low, and therefore a core collection buffer device is needed, and the core which returns at high speed can be buffered and decelerated, so that the collected core is ensured to be intact.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a core collection backflushing backflow buffer device.
The invention provides a core collecting backflushing backflow buffer device which comprises a backflushing backflow buffer device shell, a spring, a rubber pad, a shunt flowtube, a flange plate, a ball valve and a pipeline, wherein the backflushing backflow buffer device shell comprises a backflushing backflow buffer device shell upper part, a backflushing backflow buffer device shell middle part and a backflushing backflow buffer device shell lower part, a drainage port is formed in the left side of the backflushing backflow buffer device shell upper part, the spring and the rubber pad are sequentially fixed in the backflushing backflow buffer device shell upper part, the backflushing backflow buffer device shell middle part is connected to the backflushing backflow buffer device shell upper part lower end, a backflushing port I is formed in the backflushing backflow buffer device shell middle part upper part, a backflushing port I is connected to the ball valve upper end through the flange plate and the pipeline, a backflushing port II is formed in the backflushing backflow buffer device shell lower part left side, the shunt flowtube is connected to the bottom of the backflushing backflow buffer device shell lower part through the flange plate and the pipeline, and the top of the shunt flowtube penetrates through the backflushing backflow buffer device shell lower part to be connected to the backflushing backflow buffer device shell lower part.
Preferably, the middle part of the housing of the backflushing backflow buffer device is connected to the bottom end of the upper part of the housing of the backflushing backflow buffer device in a sealing way.
Preferably, the bottom end of the split flow tube is connected with the bottom end of the lower part of the shell of the backflushing backflow buffer device in a sealing way.
Preferably, the lower part of the housing of the backflushing backflow buffer device is connected with the bottom end of the middle part of the housing of the backflushing backflow buffer device in a sealing way.
Preferably, the spring is connected with the top end of the upper part of the housing of the backflushing backflow buffer device in a sealing way, and the rubber pad is connected with the bottom of the spring by waterproof glue.
Preferably, the sealing connection is specifically welding, and the welding mode is full welding.
Preferably, the two pipelines are respectively fixed at the upper end and the lower end of the ball valve through flange plates.
Preferably, bolts are mounted on the flange plate.
In the invention, the core collection recoil backflow buffer device has the following beneficial technical effects:
The invention is mainly used for solving the problem that cores are damaged to different degrees due to the fact that the three-phase flow speed of the upward return of the slag discharge pipe is high in the gas lift reverse circulation coring process, the core is fed into the middle of the shell of the backflushing backflow buffer device through the split flow pipe, redundant fluid enters the middle of the shell of the backflushing backflow buffer device from the side direction through the ball valve so as to provide right force for the core, the rubber pad provides downward force for the core so as to buffer and slow down the core which is upward returned at high speed, and the backflow port on the right lower side of the middle of the shell of the backflushing backflow buffer device flows out of the device so as to achieve the effect of buffering and slowing down.
Drawings
FIG. 1 is a half cross-sectional view of an overall assembly of a core-collecting recoil backflow buffer device in accordance with the present invention;
fig. 2 is a half cross-sectional view of a housing of a core-collecting recoil backflow buffer device according to the present invention.
In the figure: 1. a spring; 2. a rubber pad; 3. recoil backflow buffer device housing; 3-1, backflushing the upper part of the shell of the backflow buffer device; 3-2, backflushing backflow buffer device shell middle part; 3-3, backflushing backflow buffer device shell lower part; 4. splitting a flower pipe; 5. a ball valve; 6. a pipe; 7. and a flange plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Examples:
Referring to fig. 1-2, a core collecting and backflushing backflow buffer device comprises a backflushing backflow buffer device shell 3, a spring 1, a rubber pad 2, a shunt pipe 4, a flange 7, a ball valve 5 and a pipeline 6, wherein the backflushing backflow buffer device shell 3 comprises a backflushing backflow buffer device shell upper part 3-1, a backflushing backflow buffer device shell middle part 3-2 and a backflushing backflow buffer device shell lower part 3-3, a drainage port is arranged on the left side of the backflushing backflow buffer device shell upper part 3-1, the ball valve 5 and the pipeline 6, the spring 1 is welded at the top end of the backflushing backflow buffer device shell upper part 3-1, the rubber pad 2 is connected to the bottom of the spring 1 through waterproof glue, the backflushing backflow buffer device shell middle part 3-2 is welded at the bottom end of the backflushing backflow buffer device shell upper part 3-1 after being polished and is fully welded, the bottom end of the backflushing backflow buffer device shell lower part 3-3 is welded at the bottom end of the backflushing backflow buffer device shell lower part 3-3, the same, the shunt pipe 4 passes through the backflushing backflow buffer device shell lower part 3-3 and the pipeline 6 and is connected with the flange 7 through the middle part of the flange 7 through the lower part of the flange 7, the backflushing backflow buffer device shell is connected with the top end of the flange 7 through the flange 7, the middle is connected with the bottom end of the ball valve through bolts by using a flange 7 and a pipeline 6.
In the invention, the middle part 3-2 of the housing of the backflushing backflow buffer device is connected with the bottom end of the upper part 3-1 of the housing of the backflushing backflow buffer device in a sealing way.
In the invention, the bottom end of the split flow tube 4 is connected with the bottom end of the lower part 3-3 of the housing of the backflushing backflow buffer device in a sealing way.
In the invention, the lower part 3-3 of the housing of the backflushing backflow buffer device is connected with the bottom end of the middle part 3-2 of the housing of the backflushing backflow buffer device in a sealing way.
In the invention, a spring 1 is connected with the top end of the upper part 3-1 of a housing of a backflushing backflow buffer device in a sealing way, and a rubber pad 2 is connected with the bottom of the spring by waterproof glue.
In the invention, the sealing connection is specifically welding, and the welding mode is full welding.
In the invention, two pipelines 6 are respectively fixed at the upper end and the lower end of a ball valve 5 through a flange 7.
In the present invention, bolts are attached to the flange 7.
The invention comprises the following steps: in the gas lift reverse circulation coring process, a three-phase flow with high upward speed of a slag discharging pipe enters a backflushing backflow buffer device shell 3 from the bottom end of a core collecting backflushing backflow buffer device, the three-phase flow firstly enters a diversion flowtube 4, a part of slurry comprising the core and the rock slag enters the middle 3-2 of the backflushing backflow buffer device shell through the upper end of the diversion flowtube 4, the rest of slurry and water enter the lower 3-3 of the backflushing backflow buffer device shell through the measuring end of the diversion flowtube 4, continuously enter a backflushing port on the left side of the lower 3-3 of the backflushing backflow buffer device shell, finally flows out of the backflushing port on the left upper side of the middle 3-2 of the backflushing backflow buffer device shell through a ball valve 5, a rightward force is provided for the core and the rock slag which are flushed by the top of the diversion flowtube 4, the core and the rock slag are enabled to be close to the tube wall to form backflow, wherein the ball valve 5 is used for adjusting the force, the spring 1 and the rubber pad 2 provide a downward force for the core and the rock slag, the buffering and the speed reduction are enabled to form backflow, and the backflow is enabled not to be damaged, and finally flows out of the backflushing port on the right lower side of the middle 3-2 of the backflushing port of the backflushing buffer device shell through the middle 3-2 of the backflushing buffer device shell
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. The utility model provides a core collection backflushing backflow buffer device, its characterized in that includes backflushing backflow buffer device shell (3), spring (1), rubber pad (2), reposition of redundant personnel pipe (4), ring flange (7), ball valve (5) and pipeline (6), backflushing backflow buffer device shell (3) include backflushing backflow buffer device shell upper portion (3-1), backflushing backflow buffer device shell middle part (3-2), backflushing backflow buffer device shell lower part (3-3), backflushing backflow buffer device shell upper portion (3-1) left side is equipped with the drainage mouth, spring (1) and rubber pad (2) are fixed in backflushing backflow buffer device shell upper portion (3-1) in proper order, backflushing backflow buffer device shell middle part (3-2) connect in backflushing backflow buffer device shell upper portion (3-1) lower extreme, backflushing backflow buffer device shell middle part (3-2) left upper side is equipped with backflushing mouth one, the lower side is equipped with the backflushing mouth one, backflushing mouth one is connected in ball valve (5) upper end through ring flange (7) and pipeline (6), backflushing backflow buffer device shell lower part (3-3) is equipped with backflushing backflow buffer device shell lower part (3-2) in order, the second recoil port is connected with the lower end of the ball valve (5) through a flange plate (7) and a pipeline (6), the split flowtube (4) is connected to the bottom end of the lower part (3-3) of the shell of the recoil backflow buffer device, and the top of the split flowtube (4) penetrates through the lower part (3-3) of the shell of the recoil backflow buffer device and is connected to the middle part (3-2) of the shell of the recoil backflow buffer device;
The three-phase flow firstly enters a shunt flowtube (4), a part of slurry comprising a core and rock slag enters the middle part (3-2) of the backflushing backflow buffer device shell through the upper end of the shunt flowtube (4), the rest of slurry and water enter the lower part (3-3) of the backflushing backflow buffer device shell through the measuring end of the shunt flowtube (4), continuously enter a backflushing port on the left side of the lower part (3-3) of the backflushing backflow buffer device shell, finally flow out from the backflushing port on the left upper side of the middle part (3-2) of the backflushing backflow buffer device shell through a ball valve (5), provide rightward force for the core and rock slag which are punched on the top of the shunt flowtube (4) and enable the core and the rock slag to be close to the tube wall to form backflow, the spring (1) and the rubber pad (2) provide downward force for the core and the rock slag to buffer and slow down to form backflow, and the core can not be damaged at the same time, and finally flow out from the backflushing port on the right lower side of the middle part (3-2) of the backflushing backflow buffer device shell.
2. The core collecting and backflushing backflow buffer device according to claim 1, wherein the middle part (3-2) of the backflushing backflow buffer device shell is connected to the bottom end of the upper part (3-1) of the backflushing backflow buffer device shell in a sealing manner.
3. The core collecting and backflushing and backflow buffering device according to claim 1, wherein the bottom end of the diversion flowtube (4) is connected to the bottom end of the lower part (3-3) of the shell of the backflushing and backflow buffering device in a sealing mode.
4. The core collecting and backflushing backflow buffer device according to claim 1, wherein the lower portion (3-3) of the backflushing backflow buffer device shell is connected to the bottom end of the middle portion (3-2) of the backflushing backflow buffer device shell in a sealing manner.
5. The core collection backflushing backflow buffer device according to claim 1, wherein the spring (1) is connected to the top end of the upper portion (3-1) of the casing of the backflushing backflow buffer device in a sealing mode, and the rubber pad (2) is connected to the bottom of the spring through waterproof glue.
6. The core-gathering recoil and reflux buffer device of claim 2, 3, 4 or 5, wherein said sealed connection is in particular a weld and the welding means is a full weld.
7. The core collecting and backflushing buffering device according to claim 1, wherein the two pipelines (6) are respectively fixed at the upper end and the lower end of the ball valve (5) through flanges (7).
8. The core collecting and backflushing buffering device according to claim 1, characterized in that bolts are mounted on the flange plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210443393.8A CN114876394B (en) | 2022-04-25 | 2022-04-25 | Backflushing backflow buffer device for core collection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210443393.8A CN114876394B (en) | 2022-04-25 | 2022-04-25 | Backflushing backflow buffer device for core collection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114876394A CN114876394A (en) | 2022-08-09 |
| CN114876394B true CN114876394B (en) | 2024-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210443393.8A Active CN114876394B (en) | 2022-04-25 | 2022-04-25 | Backflushing backflow buffer device for core collection |
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| CN1356451A (en) * | 2002-01-11 | 2002-07-03 | 华北石油管理局钻井工艺研究院 | Reverse cycle drilling method and equipment for oil well or gas well |
| CN1587636A (en) * | 2004-08-18 | 2005-03-02 | 中国石油天然气集团公司 | Full well back circulation fishing process and matching device |
| RU2369719C1 (en) * | 2008-05-04 | 2009-10-10 | Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный институт имени Г.В. Плеханова (технический университет)" | Method of recovery of core out of hydrate containing rock and facility for implementation of this method |
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| CN208294471U (en) * | 2018-05-21 | 2018-12-28 | 广州海洋地质调查局 | It is a kind of for deep water without marine riser gas lift reverse circulation drilling well system |
| CN112627755A (en) * | 2020-12-25 | 2021-04-09 | 吉林大学 | Lifting drilling type large-diameter well bottom in-situ pressure maintaining coring drilling tool |
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| SU1602968A1 (en) * | 1988-09-23 | 1990-10-30 | Трест "Дальвостуглеразведка" | Self-sealing core- and gas-taking tool |
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| CN108425651A (en) * | 2018-05-21 | 2018-08-21 | 广州海洋地质调查局 | It is a kind of for deep water without marine riser gas lift reverse circulation drilling well system and method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114876394A (en) | 2022-08-09 |
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