CN114086921A - Negative pressure barrel for deepwater natural gas hydrate exploitation - Google Patents
Negative pressure barrel for deepwater natural gas hydrate exploitation Download PDFInfo
- Publication number
- CN114086921A CN114086921A CN202010860020.1A CN202010860020A CN114086921A CN 114086921 A CN114086921 A CN 114086921A CN 202010860020 A CN202010860020 A CN 202010860020A CN 114086921 A CN114086921 A CN 114086921A
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- CN
- China
- Prior art keywords
- natural gas
- gas hydrate
- negative pressure
- pipe
- deepwater
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- 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
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Classifications
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- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
- E21B43/0107—Connecting of flow lines to offshore structures
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- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
- E21B43/168—Injecting a gaseous medium
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- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
Abstract
The invention relates to the field of ocean engineering, in particular to a negative pressure barrel for deepwater natural gas hydrate exploitation, which can be used for natural gas hydrate exploitation and comprises a barrel body and a connector; a communicating pipe and a supporting frame are arranged in the barrel body; a high-pressure water nozzle and a gas injection nozzle are arranged in the negative pressure barrel; a water supply pipe, an air supply pipe and a pulp return pipe are arranged in the communicating pipe; according to the invention, by means of the negative pressure barrel mode, when the deepwater natural gas hydrate is mined, a pipe cable can be connected, the communication with the water production facility is realized through the internal conveying pipe, high-pressure water and gas injection can be injected to the seabed as required, and the natural gas hydrate gas is returned and collected through the slurry return pipe. When the operation is finished, the barrel body can be lifted and recovered for reuse, the whole operation process is simple and convenient to operate, new equipment is provided for deepwater natural gas hydrate exploitation, and the method is safe and efficient and has wide application prospects.
Description
Technical Field
The invention relates to the field of ocean engineering, in particular to a negative pressure barrel for deepwater natural gas hydrate exploitation.
Background
The natural gas hydrate is also called as combustible ice, and is an ice-like crystalline substance formed by natural gas and water under high pressure and low temperature conditions and distributed in deep sea sediments or permafrost in land areas. It is also called "combustible ice" because it looks like ice and burns when exposed to fire. The resource density is high, the global distribution is wide, and the resource value is extremely high, so the method becomes a long-term research hotspot in the oil and gas industry. Since the last 60 s, some countries, such as the united states, japan, germany, china, korea, and india, have developed natural gas hydrate exploration and development programs. Heretofore, hydrate sites have been found to exceed 230 in offshore sea and permafrost regions, emerging as a large body of hot research areas for natural gas hydrates.
In 2013, 6 to 9 months, a high-purity natural gas hydrate sample is drilled for the first time in the eastern sea area of the Zhujiang mouth basin in the Guangdong coastal region, and considerable control reserves are obtained through drilling. In 2014, 2, 1, the south China sea natural gas hydrate enrichment rule and the mining basic research are checked and accepted, and the south China sea combustible ice basic research system theory is established. Petroleum in the Guangzhou ocean regional dispatching office union of Guangzhou 5 Yue in 2017 is successfully trial-mined by adopting a blue whale No. 1 depressurization method. The middle sea oil in 5 months in 2017 was successfully pilot-mined by using a marine oil 708 exploration ship in a solid fluidization manner. And 11, 3 months in 2017, the national institute officially approves that the natural gas hydrate is listed as a new mineral species. Therefore, the natural gas hydrate pilot production technology has strong development potential in China.
In order to seize a new energy development market, innovative research on scientific theories, technical methods and supporting equipment in the field of natural gas hydrate exploration and development needs to be strengthened.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a negative pressure barrel for deepwater natural gas hydrate exploitation. The negative pressure barrel can be used for exploiting natural gas hydrates and can be recycled and reused after construction operation is finished.
The technical scheme is as follows:
the negative pressure barrel is used for deepwater natural gas hydrate exploitation and comprises a barrel body and a connector; a communicating pipe and a supporting frame are arranged in the barrel body; the negative pressure barrel is internally provided with a high-pressure water nozzle and a gas injection nozzle.
Furthermore, a water supply pipe, an air supply pipe and a pulp return pipe are arranged in the communicating pipe;
further, the lower end of the pulp return pipe is connected with a pulp return port;
furthermore, the lower end of the water supply pipe is connected with a transverse water pipe;
furthermore, the other end of the transverse water pipe is connected with a high-pressure water nozzle;
further, the lower end of the gas supply pipe is connected with a gas injection nozzle;
furthermore, the other end of the connector is connected with a pipe cable and a water production facility.
The invention has the beneficial effects that:
according to the invention, by means of the negative pressure barrel mode, when the deepwater natural gas hydrate is mined, a pipe cable can be connected, the communication with the water production facility is realized through the internal conveying pipe, high-pressure water and gas injection can be injected to the seabed as required, and the natural gas hydrate gas is returned and collected through the slurry return pipe. When the operation is finished, the barrel body can be lifted and recovered for reuse, the whole operation process is simple and convenient to operate, new equipment is provided for deepwater natural gas hydrate exploitation, and the method is safe and efficient and has wide application prospects.
Drawings
FIG. 1 is a schematic view of a negative pressure barrel for deepwater natural gas hydrate production according to the present invention;
fig. 2 is a view of the negative pressure barrel for deepwater natural gas hydrate mining in the direction of A-A.
In the figure: 1-barrel body, 2-communicating pipe, 3-support frame, 4-horizontal water pipe, 5-high pressure water nozzle, 6-slurry return port, 7-gas injection nozzle, 8-internal conveying pipe, 9-connector, 10-water supply pipe, 11-gas supply pipe and 12-slurry return pipe.
Detailed Description
The present invention will be further specifically described with reference to the following examples.
As shown in fig. 1-2, the negative pressure barrel for deepwater natural gas hydrate exploitation comprises a barrel body 1 and a connector 9; a communicating pipe 2 and a supporting frame 3 are arranged in the barrel body 1; the negative pressure barrel is internally provided with a high pressure water nozzle 5 and an air injection nozzle 7.
A water supply pipe 10, an air supply pipe 11 and a pulp return pipe 12 are arranged in the communicating pipe 2;
the lower end of the pulp return pipe 12 is connected with the pulp return port 6;
the lower end of the water supply pipe 11 is connected with the horizontal water pipe 4;
the other end of the transverse water pipe 4 is connected with a high-pressure water nozzle 5;
the lower end of the gas supply pipe 11 is connected with a gas injection nozzle 7;
the other end of the connector 9 is connected with a pipe cable and a water production facility.
The embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The above-described embodiments may be omitted, replaced, or modified in various ways without departing from the scope of the appended claims and the gist thereof.
Claims (10)
1. The negative pressure barrel for deepwater natural gas hydrate exploitation comprises a barrel body (1) and a connector (9); the method is characterized in that: the barrel body (1) is internally provided with a communicating pipe (2) from top to bottom and a supporting frame (3) which is supported between the communicating pipe (2) and the inner wall of the barrel body.
2. Negative pressure bucket for deepwater natural gas hydrate exploration according to claim 1, characterized in that the bottom of the bucket body is also provided with high pressure water nozzles (5).
3. The negative pressure bucket for deepwater natural gas hydrate exploitation according to claim 2, wherein a gas injection nozzle (7) is further arranged at the bottom of the bucket body.
4. The negative pressure bucket for deepwater natural gas hydrate production according to claim 2, wherein: a water supply pipe (10) is sleeved in the communicating pipe (2), and the high-pressure water nozzle is communicated with the connector through the water supply pipe.
5. The negative pressure bucket for deepwater natural gas hydrate production according to claim 3, wherein: communicating pipe (2) endotheca be equipped with air supply pipe (11), the gas injection nozzle passes through air supply pipe intercommunication connector.
6. The negative pressure bucket for deepwater natural gas hydrate production according to claim 4 or 5, wherein: the communicating pipe (2) is also internally sleeved with a pulp returning pipe (12).
7. The negative pressure bucket for deepwater natural gas hydrate production according to claim 6, wherein: the lower end of the pulp return pipe (12) is connected with the pulp return port (6).
8. The negative pressure bucket for deepwater natural gas hydrate production according to claim 4, wherein: the lower end of the water supply pipe (11) is connected with the transverse water pipe (4);
9. the negative pressure bucket for deepwater natural gas hydrate production of claim 9, wherein: the other end of the transverse water pipe (4) is connected with a high-pressure water nozzle (5);
10. the negative pressure bucket for deepwater natural gas hydrate production according to claim 5, wherein: the lower end of the gas supply pipe (11) is connected with a gas injection nozzle (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010860020.1A CN114086921A (en) | 2020-08-24 | 2020-08-24 | Negative pressure barrel for deepwater natural gas hydrate exploitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010860020.1A CN114086921A (en) | 2020-08-24 | 2020-08-24 | Negative pressure barrel for deepwater natural gas hydrate exploitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114086921A true CN114086921A (en) | 2022-02-25 |
Family
ID=80295680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010860020.1A Pending CN114086921A (en) | 2020-08-24 | 2020-08-24 | Negative pressure barrel for deepwater natural gas hydrate exploitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114086921A (en) |
-
2020
- 2020-08-24 CN CN202010860020.1A patent/CN114086921A/en active Pending
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