CN109653692A - Gas sand flushing valve for natural gas well - Google Patents
Gas sand flushing valve for natural gas well Download PDFInfo
- Publication number
- CN109653692A CN109653692A CN201710943339.9A CN201710943339A CN109653692A CN 109653692 A CN109653692 A CN 109653692A CN 201710943339 A CN201710943339 A CN 201710943339A CN 109653692 A CN109653692 A CN 109653692A
- Authority
- CN
- China
- Prior art keywords
- ontology
- sand washing
- nozzle
- natural gas
- gas
- 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.)
- Granted
Links
- 239000004576 sand Substances 0.000 title claims abstract description 77
- 239000007789 gas Substances 0.000 title claims abstract description 60
- 239000002343 natural gas well Substances 0.000 title claims abstract description 39
- 238000011010 flushing procedure Methods 0.000 title 1
- 238000005406 washing Methods 0.000 claims abstract description 72
- 238000009991 scouring Methods 0.000 claims description 38
- 238000004080 punching Methods 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000012224 working solution Substances 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a gas sand washing valve for a natural gas well, and belongs to the field of blockage removal operation of natural gas wells. The gas sand washing valve for the natural gas well comprises a body, a nozzle and a sand washing head, wherein two ends of the body are respectively connected with the sand washing head through an oil pipe, the inside of the body is hollow, the first end of the nozzle is fixed in the inside of the body, the second end of the nozzle extends out of the second end of the body, the inside of the sand washing head is controlled, the sand washing head is communicated with the inside of the body through the nozzle, meanwhile, a through hole is formed in the side wall of the second end of the body and is communicated with the inside of the body, when the gas sand washing valve and the oil pipe are together put into a target interval in the natural gas well, gas is introduced into the oil pipe, sand washing operation is realized by utilizing a Venturi principle, the operation is simple and convenient, the labor intensity is low, pollution in the well cannot be caused, and further the smooth proceeding of subsequent development.
Description
Technical field
The present invention relates to natural gas well de-plugging field of operation, in particular to a kind of gas scouring sluice for the natural gas well.
Background technique
As in protruding into for oil-gas field development, especially natural gas well exploitation, phenomenon of shaking out is universal and serious, needs often
Property to the natural gas well carry out sand washing operation.
The natural gas well sand washing operation of the prior art generally selects liquid as sand washing medium to carry out sand washing, needs to be equipped with
One working rig, a tread pump truck, two roping sand washing tank trucks and several well head operators.During sand washing, need
It will be under the operation of well head operator, it is ensured that working rig is functional, and ground pump truck can be continual to coiled tubing
In be pumped into working solution and continue multiple hours, to guarantee sand washing quality and efficiency.
In the implementation of the present invention, the inventors discovered that in the prior art the prior art has at least the following problems:
The prior art carries out sand washing as sand washing medium using liquid, comparatively heavy workload, and labor intensity is high, energy
Source consumption is big, easily causes the pollution in well when liquid is injected into the natural gas well with duration, makees to further exploitation
Industry impacts.
Summary of the invention
In consideration of it, the present invention provides a kind of gas scouring sluice for the natural gas well, it is the progress of sand washing medium using gas
Sand washing, to reduce labor intensity.
Specifically, including technical solution below:
A kind of gas scouring sluice for the natural gas well, is arranged in the end of oil pipe, the gas scouring sluice include ontology,
Nozzle and sand washing head, wherein
The first end of the ontology is connected with the oil pipe, and the second end of the ontology is connected with the sand washing head；
The inner hollow of the ontology, the first end of the nozzle are fixed on the inside of the ontology, and the of the nozzle
The second end of the ontology is stretched out at two ends；
The inner hollow of the sand washing head, the sand washing head are connected to by the nozzle with the inside of the ontology；
Offer through-hole on the side wall of the second end of the ontology, the through-hole is connected to the inside of the ontology and described
The outside of body.
Further, the inside of the sand washing head offers the first cavity and the second cavity of connection, first cavity
Internal diameter be inwardly gradually reduced from one end of the sand washing head, the internal diameter of second cavity is from the inside of the sand washing head to institute
The other end for stating sand washing head is gradually increased.
Further, the nozzle is hollow cone nozzle, and the outer diameter of the second end of the nozzle is less than the nozzle
The outer diameter of first end.
Further, the second end of the nozzle is extend into first cavity, and the second end of the nozzle is outer
Diameter is less than the internal diameter of the junction of first cavity and second cavity.
Further, the second end of the sand washing head is serrated.
Further, the gas scouring sluice further includes connector, and the first end of the ontology, and position is arranged in the connector
Between the first end and the oil pipe of the ontology.
Further, the inner hollow of the connector, and be connected to the inside of the ontology.
Further, the quantity of the through-hole is 4~6, and uniformly distributed on the side wall of the ontology.
Technical solution provided in an embodiment of the present invention the utility model has the advantages that
The embodiment of the invention provides a kind of gas scouring sluice for the natural gas well, the both ends of ontology respectively at oil pipe and
Sand washing head is connected, the inner hollow of ontology, and the first end of nozzle is fixed on the inside of ontology, and the second end of nozzle stretches out ontology
Second end is controlled in the inside of sand washing head, sand washing head is connected to by nozzle with the inside of ontology, meanwhile, in the second end of ontology
Through-hole is offered on side wall, through-hole is connected to the inside of ontology and the outside of ontology, when gas scouring sluice is together with oil pipe tripping in together
When interval of interest into the natural gas well, it is passed through gas into oil pipe, realizes sand washing operation using venturi principle, it is easy to operate
Convenient, labor intensity is small, not will cause the pollution in well, and then ensure going on smoothly for subsequent development operation.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of perspective structure schematic diagram of the gas scouring sluice for the natural gas well provided in an embodiment of the present invention；
Fig. 2 is a kind of the schematic diagram of the section structure of the gas scouring sluice for the natural gas well provided in an embodiment of the present invention.
Appended drawing reference in figure respectively indicates are as follows:
1, ontology；
101, through-hole；
2, nozzle；
3, sand washing head；
301, the first cavity；
302, the second cavity；
4, connector.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, below in conjunction with attached drawing to embodiment of the present invention make into
One step it is described in detail.
The embodiment of the invention provides a kind of gas scouring sluice for the natural gas well, structural schematic diagram as shown in Figure 1,
Including ontology 1, nozzle 2 and sand washing head 3.
The first end of ontology 1 is connected with oil pipe, and the second end of ontology 1 is connected with sand washing head 3.
The inner hollow of ontology 1, the first end of nozzle 2 are fixed on the inside of ontology 1, and the second end of nozzle 2 stretches out ontology 1
Second end.
The inner hollow of sand washing head 3, sand washing head 3 are connected to by nozzle 2 with the inside of ontology 1.
Offer through-hole 101 on the side wall of the second end of ontology 1, through-hole 101 be connected to ontology 1 inside and ontology 1 it is outer
Portion.
Therefore, the embodiment of the present invention is by ontology 1, nozzle 2 and sand washing head 3, when gas scouring sluice together with oil pipe together under
When entering the interval of interest into the natural gas well, it is passed through gas into oil pipe, realizes sand washing operation, simple and convenient, labour is strong
It spends small, not will cause the pollution in well, and then ensure going on smoothly for subsequent development operation.
It should be noted that the gas scouring sluice of the embodiment of the present invention is utilized when carrying out sand washing using gas medium
Working principle is venturi principle, in embodiments of the present invention when, specifically: when high pressure draught from oil pipe enter ontology 1,
When flowing through nozzle 2, since 2 bore of nozzle is less than the internal diameter of ontology 1, air flow passage from the coarse to fine, accelerate by gas flow rate, this
When, the region area of an approximation " vacuum " is formed in the rear side of 2 second end of nozzle, definitely suction-operated is generated, due to herein
Ontology 1 offer through-hole 101 so that be adsorbed and passed back into through-hole 101 again from the gas that sand washing head 3 flows out, then with from
By sand washing head 3 after the gas mixing that nozzle 2 flows out, sand washing operation is carried out to purpose of horizon.
In order to be better achieved the embodiment of the present invention the gas scouring sluice for the natural gas well effect, as shown in Fig. 2,
The inside of sand washing head 3 offers the first cavity 301 and the second cavity 302 of connection, and the internal diameter of the first cavity 301 is from sand washing head 3
One end be inwardly gradually reduced, the internal diameter of the second cavity 302 is gradually increased from the inside of sand washing head 3 to the other end of sand washing head 3,
So that the internal diameter of sand washing head 3 is most narrow at the first cavity 301 and the second cavity 302, aditus laryngis is formed, aditus laryngis can be with nozzle 2
Second end cooperation, preferably realizes the ejection of high pressure gas using venturi principle, realizes sand washing operation to purpose of horizon.
Meanwhile in the gas scouring sluice for the natural gas well of the embodiment of the present invention, nozzle 2 is hollow cone nozzle,
The outer diameter of the second end of nozzle 2 is less than the outer diameter of the first end of nozzle 2, and as depicted in figs. 1 and 2, the first end of nozzle 2 is fixed on
In ontology 1, the second end of nozzle 2 is in cone-shaped, so that the outer diameter of the second end of nozzle 2 makes less than the first end outer diameter of nozzle 2
It obtains air-flow and realizes circulation passage from the coarse to fine when by nozzle 2, gas flow rate is accelerated.
Further, the second end of nozzle 2 is extend into the first cavity 301, and the outer diameter of the second end of nozzle 2 is less than
The outer diameter of the junction of one cavity 301 and the second cavity 302, so that washing away purpose of horizon again from the gas that sand washing head 3 sprays
Sand body after, can be flowed back into ontology 1 from through-hole 101, by nozzle 2 second end outside and sand washing head 3 first
Gap between the inside of cavity 301 is realized and after the gas mixing that nozzle 2 flows out again by sand washing head 3, to target zone
Position constantly carries out sand washing operation.
It should be noted that as can be seen from Figure 2, the conical section of nozzle 2 is from 1 internal stretch of ontology to first
In cavity 301, through-hole 101 is provided on the side wall of the second end of ontology 1, and is located at the top of the conical section of nozzle 2, at this
In the gas scouring sluice for the natural gas well of inventive embodiments, the quantity of through-hole 101 is 4~6, preferably 5, and uniformly
It is laid on the side wall of ontology 1, the reflux of gas can be better achieved.
In order to which the sand washing operation to purpose of horizon is better achieved, in the gas for the natural gas well of the embodiment of the present invention
In scouring sluice, the second end of sand washing head 3 is serrated, so that when gas scouring sluice is lowered into naturally in the lower end for being mounted on oil pipe
When in gas well, the sand body of purpose of horizon is hit in the hackly structure that can use the second end of sand washing head 3, is tried its sand face
It visits.
In order to which the fixed installation to gas scouring sluice is better achieved, in the gas for the natural gas well of the embodiment of the present invention
In body scouring sluice, gas scouring sluice further includes connector 4, and the first end of ontology is arranged in connector 4, as depicted in figs. 1 and 2, and position
In the AMMT screw thread for being provided with connection in the geographical between oil pipe of ontology 1, connector 4, AMMT screw thread and oil pipe can be passed through
Realization is stably connected with.
In the gas scouring sluice for the natural gas well of the embodiment of the present invention, in connection relationship, it is preferable that connector 4
Threadedly connect with ontology 1, the first end of nozzle 2 is threadedly connected to the inside of ontology 1, sand washing head 3 with
It is threadedly connected between the second end of ontology 1, guarantees that stablizing between each component is fixed, in other embodiments, connect
Screw thread mode can also be used between first 4 and ontology 1, the first end of nozzle 2 and ontology 1, sand washing head 3 and the second end of ontology 1
Or the types of attachment such as welding manner, it is not specifically limited herein.
In the gas scouring sluice for the natural gas well of the embodiment of the present invention, ontology 1, nozzle 2, sand washing head 3 and connector 4
Metal material is all used, guarantee the secured of gas scouring sluice and is hardly damaged.
In the gas scouring sluice for the natural gas well of the embodiment of the present invention, gas is preferably nitrogen, on the one hand because
Nitrogen is easily obtained, will not be to mined on the other hand since nitrogen is not easy to react with the gas in the natural gas well
Gas generates pollution, can ensure going on smoothly for subsequent development operation.
During reality carries out sand washing operation to the natural gas well, it is divided into the following steps and is operated:
Firstly, connect each component of gas scouring sluice on the ground, guarantee connector 4, ontology 1, nozzle 2 and sand washing head 3 it
Between connection fastening it is firm, the second end of nozzle 2 is at a distance from aditus laryngis in effective spacing；
Secondly, gas scouring sluice to be connected to the end of oil pipe, it is lowered into the sand washing layer of the natural gas well together in company with oil pipe
Section continuously descends drain line when reaching interval of interest, carries out sand interview and visits；
Finally, the nitrogen vehicle processed on ground starts nitrogen processed, so that nitrogen enters gas scouring sluice by oil pipe after approval
In, carry out sand washing operation.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (8)
1. a kind of gas scouring sluice for the natural gas well, is arranged in the end of oil pipe, which is characterized in that the gas scouring sluice
Including ontology (1), nozzle (2) and sand washing head (3), wherein
The first end of the ontology (1) is connected with the oil pipe, and the second end of the ontology (1) is connected with the sand washing head (3)；
The first end of the inner hollow of the ontology (1), the nozzle (2) is fixed on the inside of the ontology (1), the nozzle
(2) second end stretches out the second end of the ontology (1)；
The inner hollow of the sand washing head (3), the sand washing head (3) are connected by the inside of the nozzle (2) and the ontology (1)
It is logical；
It is offered through-hole (101) on the side wall of the second end of the ontology (1), the through-hole (101) is connected to the ontology (1)
The internal outside with the ontology (1).
2. the gas scouring sluice according to claim 1 for the natural gas well, which is characterized in that the sand washing head (3)
Inside offers the first cavity (301) and the second cavity (302) of connection, and the internal diameter of first cavity (301) is from the punching
One end of sand head (3) is inwardly gradually reduced, and the internal diameter of second cavity (302) is from the inside of the sand washing head (3) to described
The other end of sand washing head (3) is gradually increased.
3. the gas scouring sluice according to claim 2 for the natural gas well, which is characterized in that the nozzle (2) is sky
Heart conical nozzle, the outer diameter of the second end of the nozzle (2) are less than the outer diameter of the first end of the nozzle (2).
4. the gas scouring sluice according to claim 3 for the natural gas well, which is characterized in that the of the nozzle (2)
Two ends are extend into first cavity (301), and the outer diameter of the second end of the nozzle (2) is less than first cavity
(301) with the internal diameter of the junction of second cavity (302).
5. the gas scouring sluice according to claim 1 for the natural gas well, which is characterized in that the sand washing head (3)
Second end is serrated.
6. the gas scouring sluice according to claim 1 for the natural gas well, which is characterized in that the gas scouring sluice is also
Including connector (4), the connector (4) setting the ontology (1) first end, and be located at the first end of the ontology (1) with
Between the oil pipe.
7. the gas scouring sluice according to claim 6 for the natural gas well, which is characterized in that the connector (4) it is interior
Portion is hollow, and is connected to the inside of the ontology (1).
8. the gas scouring sluice according to claim 1 for the natural gas well, which is characterized in that the through-hole (101)
Quantity is 4~6, and uniformly distributed on the side wall of the ontology (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710943339.9A CN109653692B (en) | 2017-10-11 | 2017-10-11 | Gas sand flushing valve for natural gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710943339.9A CN109653692B (en) | 2017-10-11 | 2017-10-11 | Gas sand flushing valve for natural gas well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109653692A true CN109653692A (en) | 2019-04-19 |
| CN109653692B CN109653692B (en) | 2021-04-30 |
Family
ID=66109127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710943339.9A Active CN109653692B (en) | 2017-10-11 | 2017-10-11 | Gas sand flushing valve for natural gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109653692B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2724443A (en) * | 1954-04-02 | 1955-11-22 | Baker Oil Tools Inc | Apparatus for automatically filling well casing |
| WO2004009952A1 (en) * | 2002-07-19 | 2004-01-29 | Presssol Ltd. | Reverse circulation clean out system for low pressure gas wells |
| CN203321384U (en) * | 2013-06-05 | 2013-12-04 | 中国石油天然气股份有限公司 | Rotary sand washing, grinding and milling spray head for continuous oil pipe |
| US20160017662A1 (en) * | 2014-05-22 | 2016-01-21 | Sergei Orel | Apparatus and method for inducing longitudinal oscillations in subterranean drilling string |
| CN205206769U (en) * | 2015-11-04 | 2016-05-04 | 中国石油化工股份有限公司 | Sand washing of coiled tubing negative pressure is with spraying drainage device and sand washing system |
| CN205977153U (en) * | 2016-09-09 | 2017-02-22 | 中国石油化工股份有限公司 | Venturi bailer |
| CN206246078U (en) * | 2016-06-08 | 2017-06-13 | 金湖县支点石油科技有限责任公司 | Compressed air circulates sand-flushing device |
-
2017
- 2017-10-11 CN CN201710943339.9A patent/CN109653692B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2724443A (en) * | 1954-04-02 | 1955-11-22 | Baker Oil Tools Inc | Apparatus for automatically filling well casing |
| WO2004009952A1 (en) * | 2002-07-19 | 2004-01-29 | Presssol Ltd. | Reverse circulation clean out system for low pressure gas wells |
| CN203321384U (en) * | 2013-06-05 | 2013-12-04 | 中国石油天然气股份有限公司 | Rotary sand washing, grinding and milling spray head for continuous oil pipe |
| US20160017662A1 (en) * | 2014-05-22 | 2016-01-21 | Sergei Orel | Apparatus and method for inducing longitudinal oscillations in subterranean drilling string |
| CN205206769U (en) * | 2015-11-04 | 2016-05-04 | 中国石油化工股份有限公司 | Sand washing of coiled tubing negative pressure is with spraying drainage device and sand washing system |
| CN206246078U (en) * | 2016-06-08 | 2017-06-13 | 金湖县支点石油科技有限责任公司 | Compressed air circulates sand-flushing device |
| CN205977153U (en) * | 2016-09-09 | 2017-02-22 | 中国石油化工股份有限公司 | Venturi bailer |
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| Publication number | Publication date |
|---|---|
| CN109653692B (en) | 2021-04-30 |
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