CN207080216U - Multilateral well productivity test device - Google Patents
Multilateral well productivity test device Download PDFInfo
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- CN207080216U CN207080216U CN201720837213.9U CN201720837213U CN207080216U CN 207080216 U CN207080216 U CN 207080216U CN 201720837213 U CN201720837213 U CN 201720837213U CN 207080216 U CN207080216 U CN 207080216U
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- simulation
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- main hole
- cylinder barrel
- well
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Abstract
The utility model discloses a kind of multilateral well productivity test device, including closed cylinder barrel（1）, the closed cylinder barrel（1）Interior filling coal dust, simulation coal seam is formed after compacting（2）, the simulation coal seam（2）Inside it is embedded into simulation main hole（3）, the simulation main hole（3）It is connected with multiple simulation branch well cylinders（5）, each simulate branch well cylinder（5）With simulating main hole（3）Branch node junction installation Node Switch valve（51）And some branch switch valves are installed in its different branch length（52）；The simulation main hole（3）Upper end passes closed cylinder barrel（1）And flowmeter is installed as exhaust outlet, its upper end exhaust ports（4）；The closed cylinder barrel（1）Bottom is provided with inflation inlet（6）, the inflation inlet（6）It is filled with natural gas.The utility model can study the influence of numbers of branches and branch length to the gas production of multilateral well, obtain preliminary test data, make basis for practical application.
Description
Technical field
The utility model belongs to coal-bed gas exploitation field, specially a kind of multilateral well productivity test device.
Background technology
At present, coal-bed gas exploitation explores horizontal well, and the well type of multilateral well, multilateral well is as a kind of new coal
Layer gas exploitation well type, traditional straight well that compares have an important advantage, and anaerogenic coal seam is at more points in the case of many straight wells
Production capacity significantly improves after the transformation of branch well, but influences the enough experiments of shortage to production capacity to the well section of multilateral well different length
Research, this experimental rig attempt solve this problem.
The content of the invention
The purpose of this utility model is to provide a kind of multilateral well productivity test device, completes multilateral well in different points
In the case of number and different branch lengths, the experimental study device of the influence to overall production capacity.
The utility model adopts the following technical scheme that realization：
A kind of multilateral well productivity test device, including closed cylinder barrel, the interior filling coal dust of the closed cylinder barrel, shape after compacting
Into simulation coal seam, simulation main hole is embedded into the simulation coal seam, the simulation main hole is connected with multiple simulation Multilateral Wells
Cylinder, each branch node junction installation Node Switch valve and its different branch simulated branch well cylinder and simulate main hole
Some branch switch valves are installed in length；The simulation main hole upper end passes closed cylinder barrel and arranged as exhaust outlet, its upper end
Flowmeter is installed at gas port；The closed cylinder barrel bottom is provided with inflation inlet, and the inflation inlet is filled with natural gas.
Coal dust is filled in closed cylinder of steel, as simulation coal seam after compacting, in cylinder of steel center, a piece steel pipe of embedment is as mould
Intend main hole, using high-pressure pump, natural gas is injected in simulation coal seam, gas is produced from the simulation main hole in center, it is main
Pit shaft has multiple branch well cylinders, and main hole installs Node Switch valve, each branch well cylinder with branch well cylinder at each branch node
On some branch switch valves are installed in different branch lengths.Under constant natural gas injection pressure, different points is opened
Zhi Jiedian switch valves, the gas production of main hole is monitored, study the influence of gas production under different numbers of branches.Then, in branch's number
Measure it is identical or certain in the case of, open multiple branch switch valves of each branch well cylinder, research branch length is to gas production
Influence.
The beneficial effects of the utility model are the gas production that can study numbers of branches and branch length to multilateral well
Influence, obtain preliminary test data, make basis for practical application.
Brief description of the drawings
Fig. 1 represents structural representation of the present utility model.
In figure, the closed cylinder barrels of 1-, 2- simulations coal seam, 3- simulation main holes, 4- flowmeters, 5- branch well cylinders, 51- nodes open
Close valve, 52- branch switch valves, 6- inflation inlets.
Embodiment
Specific embodiment of the utility model is described in detail below in conjunction with the accompanying drawings.
A kind of multilateral well productivity test device, as shown in figure 1, including closed cylinder barrel 1, the closed cylinder barrel 1 is interior to be filled
Coal dust, simulation coal seam 2 is formed after compacting, simulation main hole 3 is embedded into the simulation coal seam 2, the simulation main hole 3 connects
There are multiple simulation branch well cylinders 5, each branch node junction installation node for simulating branch well cylinder 5 and simulation main hole 3 is opened
Close and some branch switch valves 52 are installed in valve 51 and its different branch length；Simulation main hole 3 upper end passes closed cylinder
Cylinder 1 is simultaneously provided with flowmeter 4 as exhaust outlet, its upper end exhaust ports；The bottom of closed cylinder barrel 1 is provided with inflation inlet 6, institute
State inflation inlet 6 and be filled with natural gas.The exhaust outlet of the simulation main hole 1 connects with exhaust collection processing unit.
In use, using high-pressure pump, natural gas is injected in simulation coal seam by inflation inlet（Natural gas is in saturation shape
State）, gas then is produced from the simulation main hole in center, because main hole is connected with multiple branch well cylinders, each Multilateral Wells
Ventilation sieve aperture is equipped with cylinder.Main hole installs Node Switch valve, each branch well cylinder with branch well cylinder at each branch node
On some branch switch valves are installed in different branch lengths.Under constant natural gas injection pressure, different points is opened
Zhi Jiedian switch valves, the gas production of main hole is monitored, study the influence to gas production under different numbers of branches.Then, in branch
In the case that quantity is identical or certain, multiple branch switch valves of each branch well cylinder are opened, research branch length is to gas production
Influence.Finally, the methane gas of output enters exhaust collection processing unit in experiment, is focused on.The experimental rig
The influence of numbers of branches and branch length to the gas production of multilateral well can be studied, there is directive significance.
It should be noted last that above example is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent
Pipe is described in detail with reference to the utility model embodiment, it will be understood by those within the art that, it is new to this practicality
The technical scheme of type is modified or equivalent substitution, without departure from the spirit and scope of the technical solution of the utility model, its
It all should cover in claims.
Claims (2)
- A kind of 1. multilateral well productivity test device, it is characterised in that：Including closed cylinder barrel（1）, the closed cylinder barrel（1）Inside fill Coal dust is filled out, simulation coal seam is formed after compacting（2）, the simulation coal seam（2）Inside it is embedded into simulation main hole（3）, the simulation master Pit shaft（3）It is connected with multiple simulation branch well cylinders（5）, each simulate branch well cylinder（5）With simulating main hole（3）Branch node Junction is installed by Node Switch valve（51）And some branch switch valves are installed in its different branch length（52）；The simulation Main hole（3）Upper end passes closed cylinder barrel（1）And flowmeter is installed as exhaust outlet, its upper end exhaust ports（4）；It is described close Close cylinder barrel（1）Bottom is provided with inflation inlet（6）, the inflation inlet（6）It is filled with natural gas.
- 2. multilateral well productivity test device according to claim 1, it is characterised in that：The simulation main hole（3）'s Exhaust outlet connects with exhaust collection processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720837213.9U CN207080216U (en) | 2017-07-12 | 2017-07-12 | Multilateral well productivity test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720837213.9U CN207080216U (en) | 2017-07-12 | 2017-07-12 | Multilateral well productivity test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207080216U true CN207080216U (en) | 2018-03-09 |
Family
ID=61427321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720837213.9U Expired - Fee Related CN207080216U (en) | 2017-07-12 | 2017-07-12 | Multilateral well productivity test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207080216U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025985A (en) * | 2018-09-19 | 2018-12-18 | 青岛海洋地质研究所 | Experimental simulation device based on multiple-limb hole technology exploitation hydrate |
| CN110700794A (en) * | 2019-09-06 | 2020-01-17 | 太原理工大学 | Multi-branch horizontal well coal seam gas extraction physical simulation experiment system |
| CN115405263A (en) * | 2021-05-28 | 2022-11-29 | 中国石油化工股份有限公司 | Multi-branch natural gas hydrate reservoir depressurization exploitation experimental device and method |
-
2017
- 2017-07-12 CN CN201720837213.9U patent/CN207080216U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025985A (en) * | 2018-09-19 | 2018-12-18 | 青岛海洋地质研究所 | Experimental simulation device based on multiple-limb hole technology exploitation hydrate |
| CN109025985B (en) * | 2018-09-19 | 2019-11-05 | 青岛海洋地质研究所 | Experimental simulation device based on multiple-limb hole technology exploitation hydrate |
| CN110700794A (en) * | 2019-09-06 | 2020-01-17 | 太原理工大学 | Multi-branch horizontal well coal seam gas extraction physical simulation experiment system |
| CN110700794B (en) * | 2019-09-06 | 2021-10-22 | 太原理工大学 | Multi-branch horizontal well coal seam gas extraction physical simulation experiment system |
| CN115405263A (en) * | 2021-05-28 | 2022-11-29 | 中国石油化工股份有限公司 | Multi-branch natural gas hydrate reservoir depressurization exploitation experimental device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180309 Termination date: 20190712 |