CN111894511A - Drilling downhole blowout prevention simulation device - Google Patents
Drilling downhole blowout prevention simulation device Download PDFInfo
- Publication number
- CN111894511A CN111894511A CN202010960261.3A CN202010960261A CN111894511A CN 111894511 A CN111894511 A CN 111894511A CN 202010960261 A CN202010960261 A CN 202010960261A CN 111894511 A CN111894511 A CN 111894511A
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- CN
- China
- Prior art keywords
- hydraulic
- drilling
- air
- central shaft
- hydraulic bag
- 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.)
- Pending
Links
- 238000004088 simulation Methods 0.000 title claims abstract description 36
- 238000005553 drilling Methods 0.000 title claims abstract description 22
- 230000002265 prevention Effects 0.000 title claims abstract description 19
- 239000002775 capsule Substances 0.000 claims abstract description 30
- 238000002347 injection Methods 0.000 claims abstract description 21
- 239000007924 injection Substances 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000002474 experimental method Methods 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 6
- 230000006835 compression Effects 0.000 abstract description 12
- 238000007906 compression Methods 0.000 abstract description 12
- 238000009826 distribution Methods 0.000 abstract description 6
- 238000011160 research Methods 0.000 abstract description 4
- 230000008602 contraction Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 210000002425 internal capsule Anatomy 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
Abstract
The invention relates to a drilling downhole blowout prevention simulation device, which comprises a central shaft 5, a gas source 1, a gas inlet valve 2, a gas outlet valve 3, a sealing plug 4, a hydraulic bag 14, retractable capsule baffle discs (10 and 11), compression nuts (6 and 7), compression blocks (8 and 9) and folding metal frameworks (12 and 13), wherein the hydraulic bag 14 is fixed on the central shaft 5, the sealing plug 4 is arranged between the central shaft and a gas injection pipeline, the gas injection pipeline is connected with the gas source 1, the gas inlet valve 2 and the gas outlet valve 3 are arranged on the gas injection pipeline, a middle pipeline of the central shaft is communicated with the hydraulic bag as a gas injection inlet, the retractable capsule baffle discs 10 and 11 are arranged at the top and the bottom of the hydraulic bag, the compression nuts 6 and 7 are arranged outside the capsule baffle discs, and the compression blocks 8 and 9 are arranged at corresponding positions inside the hydraulic bag to clamp and fix the hydraulic; the retractable capsule baffle disc is connected with the folding metal frameworks 12 and 13. The invention is convenient to research the change relation of pipe flow pressure distribution along with time when the pipe flow is unidirectionally closed by simulating the setting of a real underground blowout preventer.
Description
Technical Field
The invention belongs to the field of petroleum drilling, and particularly relates to a novel drilling-while-drilling underground blowout prevention simulation device which is used for simulating the setting of a real underground blowout preventer so as to research the change relation of pipe flow pressure distribution along with time when a pipe flow is unidirectionally closed in the setting state of the underground blowout preventer.
Background
With the deep development of oil and gas development, the oil and gas development gradually turns to deep stratum, the characteristics of high temperature, high pressure and ultra-deep are presented, the oil and gas reservoirs are easy to overflow, kick and even possibly induce blowout accidents, the conventional blowout preventer at a wellhead and the downhole blowout preventer can be used for controlling the pressure in the well to prevent the blowout accidents, but the initial condition is underbalance at the well bottom, so fluid still enters the interior of the pipe flow, and the pressure of the closed part of the pipe flow is increased. And when the blowout preventer is serious, the downhole blowout preventer fails, and the function of the downhole protective barrier is lost. Thus, it is necessary to study the change in pipe flow pressure distribution over time when the pipe flow is unidirectionally closed in the setting of a blowout preventer with drilling fluid stopped from circulating.
However, in a circulation stopping state, the flow law of the downhole multiphase flow cannot be predicted, and particularly, the downhole multiphase flow cannot be known under the condition that a well head is not ejected out of drilling fluid, so that a novel downhole blowout prevention simulation device while drilling based on a laboratory environment needs to be developed so as to facilitate research on the change relation of pipe flow pressure distribution with time when pipe flow is unidirectionally closed.
Disclosure of Invention
The invention aims to provide a drilling downhole blowout prevention simulation device which is reliable in principle and simple and convenient to operate, and researches the change relation of pipe flow pressure distribution along with time when pipe flow is unidirectionally closed by simulating real downhole blowout preventer setting, so that the problems that the flow rule of downhole multiphase flow cannot be predicted in a circulation stopping state and the like are solved.
In order to achieve the technical purpose, the invention adopts the following technical scheme.
A drilling downhole blowout prevention simulation device comprises a starting unit, a plugging unit and a fixing unit.
The starting unit comprises an air source, an air inlet valve and an air outlet valve, the air source and the air inlet valve are opened when an experiment is started, the air outlet valve is closed, air enters and props up the hydraulic bag through a pipeline, the underground blowout prevention simulation device while drilling is seated on the inner wall of the simulation sleeve, the air source and the air inlet valve are closed after the seating is completed, the underground blowout prevention simulation device while drilling can be kept in a seated state all the time, the air outlet valve is opened after the experiment is completed, and the hydraulic bag contracts to a natural state after the air is discharged, so that the device can be lifted and taken out.
The device can be placed at any position of a simulation sleeve, gas is injected into the hydraulic bag through a middle pipeline in the central shaft, the hydraulic bag is expanded under pressure and clings to the inner wall of the simulation sleeve to play a role in sealing the pipe, the foldable metal frameworks at the upper end and the lower end of the hydraulic bag are opened in the expansion process of the hydraulic bag, gaps between the hydraulic bag and the wall of the simulation sleeve are reduced, the hydraulic bag is prevented from being damaged, and the sealing plug is positioned at a contact part between the central shaft and the gas injection pipeline and can play a role in sealing so as to prevent gas leakage.
The fixed unit comprises a central shaft, a hexagonal gland nut, an internal capsule pressing block and a retractable capsule baffle disc, the central shaft is used for fixing the hydraulic capsule and bearing axial stress, meanwhile, an intermediate pipeline of the central shaft serves as a gas injection input port, the hexagonal gland nut and the internal capsule pressing block are used for clamping and fixing the hydraulic capsule and preventing gas leakage, the retractable capsule baffle disc can bear pressure generated after the hydraulic capsule is injected, the hydraulic capsule is restrained to deform along the axial direction of the simulation sleeve, and meanwhile, the retractable capsule baffle disc can be used for installing a folding metal framework.
Compared with the prior art, the invention has the following beneficial effects:
1) the folding metal framework is utilized to bear the force and simultaneously protect the hydraulic bag;
2) the device can be placed at any position in the simulation sleeve, and the hydraulic bag is pressurized or decompressed through a middle pipeline in the central shaft to complete the expansion or contraction of the hydraulic bag;
3) low cost, convenient production and convenient replacement.
Drawings
FIG. 1 is a schematic structural diagram of a drilling-while-drilling downhole blowout prevention simulation device.
In the figure: the device comprises a gas source 1, a gas inlet valve 2, a gas outlet valve 3, a sealing plug 4, a central shaft 5, a hexagonal compression nut 6, a hexagonal compression nut 7, a compression block inside a capsule 8, a compression block inside a capsule 9, a contraction type capsule baffle disc 10, a contraction type capsule baffle disc 12, a contraction type metal framework 13, a hydraulic capsule 14, a simulation sleeve 15.
Detailed Description
The present invention is further described below with reference to the accompanying drawings so as to facilitate understanding of the present invention by those skilled in the art. It is to be understood that the invention is not limited in scope to the specific embodiments, but is intended to cover various modifications within the spirit and scope of the invention as defined and defined by the appended claims, as would be apparent to one of ordinary skill in the art.
See fig. 1.
A simulation device for underground blowout prevention while drilling comprises a central shaft 5, a gas source 1, a gas inlet valve 2, a gas outlet valve 3, a sealing plug 4, a hydraulic bag 14, a retractable capsule baffle disc (10, 11), a compression nut (6, 7), a compression block (8, 9) and a folding metal framework (12, 13), wherein the hydraulic bag 14 is fixed on the central shaft 5, the sealing plug 4 is arranged between the central shaft and a gas injection pipeline, the gas injection pipeline is connected with the gas source 1, the gas inlet valve 2 and the gas outlet valve 3 are arranged on the gas injection pipeline, a middle pipeline of the central shaft is used as a gas injection input port and is communicated with the hydraulic bag 14, the retractable capsule baffle disc 10, 11 is arranged at the top and the bottom of the hydraulic bag, the compression nut 6, 7 is arranged outside the capsule baffle disc, and the compression block 8, 9 is arranged at the corresponding position inside the hydraulic bag; the retractable capsule baffle disc is connected with the folding metal frameworks 12 and 13.
The gas injection pipeline is provided with an air inlet valve, gas enters and props up the hydraulic bag through the air inlet valve, so that the underground blowout prevention simulation device while drilling is sealed on the inner wall of the simulation sleeve 15, and the change relation of pipe flow pressure distribution along with time when pipe flow is sealed in a single direction can be conveniently researched.
And the gas injection pipeline is provided with a gas outlet valve which is opened to release gas after the experiment is finished, so that the hydraulic bag is contracted to a natural state, and the device is convenient to lift and take out.
The retractable capsule baffle disc bears the pressure generated after the gas injection of the hydraulic capsule and restrains the axial deformation of the hydraulic capsule along the simulation sleeve.
The folding metal framework is unfolded in the expansion process of the hydraulic bag, occupies a gap between the hydraulic bag and the wall of the simulation sleeve and prevents the hydraulic bag from being damaged.
The device is used for simulating the setting of a real underground blowout preventer, and the process is as follows:
(1) before the experiment begins, the hydraulic bag is in a natural contraction state, the folding metal framework is not opened, and the device is put down to any position in the simulation casing;
(2) opening an air source and an air inlet valve, injecting air into the hydraulic bag through a middle pipeline in the central shaft, and positioning a sealing plug at a contact part between the central shaft and an air injection pipeline to prevent air leakage;
(3) gas enters and props up the hydraulic bag through a pipeline, the hydraulic bag is expanded under pressure and is tightly attached to the inner wall of the simulation casing pipe, so that the underground blowout prevention simulation device while drilling is seated on the inner wall of the simulation casing pipe;
(4) in the expansion process of the hydraulic bag, the folding metal frameworks at the upper end and the lower end are opened, so that the gap between the hydraulic bag and the wall of the simulation sleeve is reduced, and the hydraulic bag is prevented from being damaged by extrusion;
(5) and after the experiment is finished, opening the gas outlet valve, after the gas is released, contracting the hydraulic bag to a natural state, and lifting up and taking out the device.
Claims (5)
1. A simulation device for underground blowout prevention while drilling comprises a central shaft (5), an air source (1), an air inlet valve (2), an air outlet valve (3), a sealing plug (4), a hydraulic bag (14), a retractable capsule baffle disc (10, 11), a gland nut (6, 7), a gland block (8, 9) and a folding metal framework (12, 13), and is characterized in that the central shaft (5) is used for fixing the hydraulic bag (14), the sealing plug (4) is arranged between the central shaft and an air injection pipeline, the air injection pipeline is connected with the air source (1), the air inlet valve (2) and the air outlet valve (3) are arranged on the air injection pipeline, a middle pipeline of the central shaft is used as an air injection input port and communicated with the hydraulic bag, the retractable capsule baffle discs (10, 11) are arranged at the top and the bottom of the hydraulic bag, the gland nut (6, 7) is arranged outside the capsule baffle disc, the gland block (8, clamping and securing the hydraulic bladder; the retractable capsule baffle disc is connected with folding metal frameworks (12, 13).
2. The drilling-while-drilling downhole blowout prevention simulation device as recited in claim 1, wherein an air inlet valve is arranged on the air injection pipeline, and air enters through the air inlet valve and props open a hydraulic bag, so that the drilling-while-drilling downhole blowout prevention simulation device is sealed on the inner wall of the simulation sleeve.
3. The downhole blowout prevention while drilling simulation device as recited in claim 1, wherein an air outlet valve is arranged on the air injection pipeline, and the air outlet valve is opened to release air after the experiment is finished, so that the hydraulic bag is contracted to a natural state, and the device is conveniently lifted and taken out.
4. The downhole blowout prevention while drilling simulation device of claim 1, wherein the collapsible capsule baffle disc bears pressure generated by the hydraulic capsule after gas injection to restrain the hydraulic capsule from deforming along the axial direction of the simulation sleeve.
5. The downhole blowout prevention while drilling simulation device of claim 1, wherein the collapsible metal framework is expanded during expansion of the hydraulic bladder to occupy a gap between the hydraulic bladder and the wall of the simulation casing to prevent damage to the hydraulic bladder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010960261.3A CN111894511A (en) | 2020-09-14 | 2020-09-14 | Drilling downhole blowout prevention simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010960261.3A CN111894511A (en) | 2020-09-14 | 2020-09-14 | Drilling downhole blowout prevention simulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111894511A true CN111894511A (en) | 2020-11-06 |
Family
ID=73226013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010960261.3A Pending CN111894511A (en) | 2020-09-14 | 2020-09-14 | Drilling downhole blowout prevention simulation device |
Country Status (1)
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| CN (1) | CN111894511A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228041A (en) * | 2020-11-23 | 2021-01-15 | 西南石油大学 | Oil well small section flow measuring tool |
| CN114607311A (en) * | 2020-12-04 | 2022-06-10 | 中国石油化工股份有限公司 | Simulation apparatus and method for wellbore pressure control of downhole blowout preventers |
| CN114607311B (en) * | 2020-12-04 | 2024-05-03 | 中国石油化工股份有限公司 | Simulation apparatus and method for wellbore pressure control of a downhole blowout preventer |
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| US4609042A (en) * | 1984-11-07 | 1986-09-02 | Ronnie J. Broadus | Inflatable safety bladder |
| US5196024A (en) * | 1990-07-03 | 1993-03-23 | Cedars-Sinai Medical Center | Balloon catheter with cutting edge |
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| CN110159257A (en) * | 2019-06-23 | 2019-08-23 | 中煤科工集团重庆研究院有限公司 | Determination of coal seam gas pressure device and its measuring method |
| CN209990483U (en) * | 2019-04-02 | 2020-01-24 | 重庆城市管理职业学院 | Coal seam fracturing anti-reflection device |
| CN110792409A (en) * | 2019-11-13 | 2020-02-14 | 中国地质调查局武汉地质调查中心(中南地质科技创新中心) | Time-sharing self-expansion bag type packer |
| CN211448595U (en) * | 2019-11-21 | 2020-09-08 | 中国石油化工股份有限公司 | Interpolation method well cementation annular space top sealing device |
| CN212296298U (en) * | 2020-09-14 | 2021-01-05 | 西南石油大学 | Drilling downhole blowout prevention simulation device |
-
2020
- 2020-09-14 CN CN202010960261.3A patent/CN111894511A/en active Pending
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| US3883046A (en) * | 1974-02-11 | 1975-05-13 | Textron Inc | Elastomeric bladder for positive expulsion tank |
| US4206929A (en) * | 1978-03-07 | 1980-06-10 | Bruce Albert I | Blow out preventer |
| US4609042A (en) * | 1984-11-07 | 1986-09-02 | Ronnie J. Broadus | Inflatable safety bladder |
| US5196024A (en) * | 1990-07-03 | 1993-03-23 | Cedars-Sinai Medical Center | Balloon catheter with cutting edge |
| US5417289A (en) * | 1993-12-30 | 1995-05-23 | Carisella; James V. | Inflatable packer device including limited initial travel means and method |
| JPH08258651A (en) * | 1995-03-24 | 1996-10-08 | Toyoda Gosei Co Ltd | Air bag device |
| US20090183875A1 (en) * | 2005-08-25 | 2009-07-23 | Christophe Rayssiguier | Method and Apparatus to Set a Plug |
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| CN209990483U (en) * | 2019-04-02 | 2020-01-24 | 重庆城市管理职业学院 | Coal seam fracturing anti-reflection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228041A (en) * | 2020-11-23 | 2021-01-15 | 西南石油大学 | Oil well small section flow measuring tool |
| CN114607311A (en) * | 2020-12-04 | 2022-06-10 | 中国石油化工股份有限公司 | Simulation apparatus and method for wellbore pressure control of downhole blowout preventers |
| CN114607311B (en) * | 2020-12-04 | 2024-05-03 | 中国石油化工股份有限公司 | Simulation apparatus and method for wellbore pressure control of a downhole blowout preventer |
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