CN202866698U - Mechanical foam breaker for oil-gas well foam drilling - Google Patents
Mechanical foam breaker for oil-gas well foam drilling Download PDFInfo
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- CN202866698U CN202866698U CN2012205478088U CN201220547808U CN202866698U CN 202866698 U CN202866698 U CN 202866698U CN 2012205478088 U CN2012205478088 U CN 2012205478088U CN 201220547808 U CN201220547808 U CN 201220547808U CN 202866698 U CN202866698 U CN 202866698U
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Abstract
The utility model relates to a mechanical foam breaker for oil-gas well foam drilling. The mechanical foam breaker for the oil-gas well foam drilling is composed of a foam receiving pipe, an adjusting device, a fixing piece, a spurting bearing body, an air inlet pipe and a diffuser, wherein a throat pipe is arranged on the interior of the adjusting device, the fixing piece is a tubular body, steps are arranged at two ends of the fixing piece in a design mode, the adjusting device and the spurting bearing body are respectively fixed on the steps of the two ends of the fixing piece through bolts, the air inlet pipe is welded on the outer pipe wall of the fixing piece along the radial direction, a circular hole is formed in the throat pipe of the adjusting device, and an annular laval nozzle is formed by the end portion of the adjusting device and the spurting bearing body. Air enters an annular cavity from the air inlet pipe, one part of the air spurts out in a high speed mode through the circular hole in the throat pipe of the adjusting pipe so as to directly crush foam, the other part of the air spurts out in a high speed mode from the laval nozzle so as to generate a wall attachment effect, negative pressure is generated on the interiors of the adjusting device, the spurting bearing body and the diffuser, and foam flowing through the adjusting device, the spurting bearing body and the diffuser is enabled to expand and burst. In addition, high speed airflow can enable the foam to be sheared and burst.
Description
Technical field
The utility model relates to a kind of Oil/gas Well foam drilling mechanical defoaming device, belongs to petroleum gas foam drilling technical field.
Background technology
Foam drilling is a kind of of under-balanced drilling technology, and application is day by day wide.Owing to containing stabilizing agent in the foam drilling fluid, foam returns out from the shaft bottom and does not break for a long time afterwards, and foam base fluid can't in time be recycled, and causes the foam drilling cost to increase considerably.The effective measures that address the above problem adopt the froth breaking technology exactly.
Debubbling method commonly used mainly contains Physical and chemical method at present.Physical mainly is to utilize the variation of temperature, pressure or mechanical external force to make the removal of foam, and chemical rule is to carry out froth breaking by chemical defoamer.Although chemistry froth breaking method can realize quick froth breaking, the affiliation that adds of defoamer sharply descends the foaming capacity of foam base fluid and stability.Therefore for the foam base fluid behind the froth breaking can be recycled, must adopt the physical defoaming method.More domestic oil fields have also proposed some physical defoaming devices or method through behind certain research and practice.Such as patent ZL200920307167.7(defoaming device for foam drilling machine), but these defoaming device defoaming effectivenesss are low, and the foam treating capacity is little, can not satisfy the actual froth breaking demand of foam drilling.
The patent No. is that ZL201020578301.X discloses a kind of annular space type foam drilling mechanical defoamer, this froth breaker is comprised of the two-stage Laval nozzle, can be at the wider vacuum area of the inner formation of froth breaker, but compressed air consumption is large, energy consumption is high, and double-stage nozzle all is to utilize vacuum to carry out froth breaking, and the foam high for viscosity, that diameter is little is difficult to eradicate.On the other hand, the base fluid behind the froth breaking and gas are discharged from the same outlet of anemostat, and base fluid can not in time separate with gas, easily produces secondary foam.
Summary of the invention
The purpose of this utility model is to overcome the defective of above-mentioned prior art, and the Oil/gas Well foam drilling mechanical defoaming device that a kind of defoaming effectiveness is high, the foam treating capacity large, energy consumption is low, simple in structure, be convenient to processing and manufacturing is provided.
The utility model patented technology scheme is as follows: Oil/gas Well foam drilling mechanical defoaming device, by foam adopter, inside be provided with trunnion adjuster, fixture, hold sprinkler body, air inlet pipe, diffuser and form, fixture is tubular body, the fixture two ends are designed with step, adjuster and holding on the step that sprinkler body is bolted on respectively the fixture two ends, be welded with the radial air inlet pipe on the outer tube wall of fixture, the adjuster trunnion is provided with circular hole, the adjuster end with hold sprinkler body and form annular Laval-cavity nozzle.
The port of export of described diffuser is connected with current limiter by flange, and the current limiter bottom is provided with leakage fluid dram, top is welded with stack, in the stack demister is installed.
Have corrugated channel on the body of described demister.
The beneficial effects of the utility model are: simple in structure, easy operating, utilize the high speed impact effect of air-flow, the suction function of wall attachment effect generation and the energy exchange effect associating froth breaking of gas and aerated fluid, base fluid behind the froth breaking in time separates with gas, avoided the generation of secondary foam, therefore the foam treating capacity is large, and defoaming effectiveness is high.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is demister schematic diagram among Fig. 1.
The specific embodiment
By illustrated in figures 1 and 2, a kind of embodiment of the present utility model by foam adopter 1, inside be provided with trunnion adjuster 2, fixture 3, hold sprinkler body 4, air inlet pipe, diffuser 5 and form, fixture 3 is tubular body, fixture 3 two ends are designed with step, adjuster 2 and holding on the step that sprinkler body 4 is bolted on respectively fixture 3 two ends is welded with radial air inlet pipe 9 on its outer tube wall; Adjuster 2 trunnions are provided with circular hole 10, adjuster 2 ends with hold sprinkler body 4 and form annular Laval-cavity nozzle 11.
The port of export of described diffuser 5 is connected with current limiter 6 by flange, and current limiter 6 bottoms are provided with leakage fluid dram, top is welded with stack 7, in the stack 7 demister 8 is installed.
Have corrugated channel 12 on the body of described demister 8.
Foam enters adjuster 2 by foam adopter 1, pressure-air enters the toroidal cavity of adjuster 2 and fixture 3 formation from radial air inlet pipe 9, the circular hole 10 at a high speed ejection of part gas on adjuster 2 trunnions, action of high-speed airflow both can directly smash foam on foam, again aerated fluid is produced disturbance, destroy the stability of foam, be convenient to follow-up froth breaking.Another part gas is by the at a high speed ejection of annular Laval-cavity nozzle 11, the narrow thin air-flow of ejection produces wall attachment effect, air-flow flows along holding sprinkler body 4 cambered surfaces and diffuser 5 walls, and the foam base fluid behind the froth breaking is discharged to mud pit through current limiter 6 bottom leakage fluid drams, and gas is discharged by exhaust opening through demister 8.Pressure-air at adjuster 2, hold sprinkler body 4 and the diffuser 5 inner negative pressure that produce, make the foam swelling fracture of flowing through, in addition, because air-flow has higher kinetic energy, when the aerated fluid process is held sprinkler body 4, aerated fluid and high velocity air generation energy exchange, produce shearing force, with the foam shearing-crushing.The design of current limiter 6 can avoid aerated fluid to be ejected into outside the mud pit on the one hand, can effectively realize gas-liquid separation on the other hand, avoids foam base fluid behind the froth breaking to mix with gas and again produces foam.
Claims (3)
1. Oil/gas Well foam drilling mechanical defoaming device, by foam adopter (1), inside is provided with the adjuster (2) of trunnion, fixture (3), hold sprinkler body (4), air inlet pipe, diffuser (5) forms, fixture (3) is tubular body, fixture (3) two ends are designed with step, adjuster (2) and holding on the step that sprinkler body (4) is bolted on respectively fixture (3) two ends, it is characterized in that: be welded with radial air inlet pipe (9) on the outer tube wall of fixture (3), adjuster (2) trunnion is provided with circular hole (10), adjuster (2) end with hold sprinkler body (4) and form annular Laval-cavity nozzle (11).
2. Oil/gas Well foam drilling mechanical defoaming device according to claim 1, it is characterized in that: the port of export of described diffuser (5) is connected with current limiter (6) by flange, current limiter (6) bottom is provided with leakage fluid dram, top is welded with stack (7), and stack is equipped with demister (8) in (7).
3. Oil/gas Well foam drilling mechanical defoaming device according to claim 2 is characterized in that: have corrugated channel (12) on the body of described demister (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205478088U CN202866698U (en) | 2012-10-24 | 2012-10-24 | Mechanical foam breaker for oil-gas well foam drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205478088U CN202866698U (en) | 2012-10-24 | 2012-10-24 | Mechanical foam breaker for oil-gas well foam drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202866698U true CN202866698U (en) | 2013-04-10 |
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ID=48033424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205478088U Expired - Fee Related CN202866698U (en) | 2012-10-24 | 2012-10-24 | Mechanical foam breaker for oil-gas well foam drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202866698U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105328506A (en) * | 2015-12-10 | 2016-02-17 | 广西玉柴机器股份有限公司 | Floating oil sucking device for cutting fluid |
| CN105545235A (en) * | 2016-03-08 | 2016-05-04 | 吉林大学 | Spiral flow type foam drilling machine foam breaker |
| CN106223882A (en) * | 2016-08-31 | 2016-12-14 | 浙江省工程勘察院 | A kind of foam drilling rotation internal combustion mechanical defoaming device and debubbling method thereof |
| CN106837220A (en) * | 2017-04-21 | 2017-06-13 | 吉林大学 | A kind of multistage strong helical flow mechanical defoaming device |
-
2012
- 2012-10-24 CN CN2012205478088U patent/CN202866698U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105328506A (en) * | 2015-12-10 | 2016-02-17 | 广西玉柴机器股份有限公司 | Floating oil sucking device for cutting fluid |
| CN105545235A (en) * | 2016-03-08 | 2016-05-04 | 吉林大学 | Spiral flow type foam drilling machine foam breaker |
| CN106223882A (en) * | 2016-08-31 | 2016-12-14 | 浙江省工程勘察院 | A kind of foam drilling rotation internal combustion mechanical defoaming device and debubbling method thereof |
| CN106223882B (en) * | 2016-08-31 | 2018-11-02 | 浙江省工程勘察院 | A kind of foam drilling rotation internal combustion mechanical defoaming device and its debubbling method |
| CN106837220A (en) * | 2017-04-21 | 2017-06-13 | 吉林大学 | A kind of multistage strong helical flow mechanical defoaming device |
| CN106837220B (en) * | 2017-04-21 | 2023-04-07 | 吉林大学 | Multistage strong spiral flow type mechanical defoamer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20161024 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |