CN203948080U - A kind of high angle hole three-dimensional orientation hydraulic jetting fracturing device - Google Patents
A kind of high angle hole three-dimensional orientation hydraulic jetting fracturing device Download PDFInfo
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- CN203948080U CN203948080U CN201420384285.9U CN201420384285U CN203948080U CN 203948080 U CN203948080 U CN 203948080U CN 201420384285 U CN201420384285 U CN 201420384285U CN 203948080 U CN203948080 U CN 203948080U
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- sliding sleeve
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Abstract
The utility model discloses a kind of high angle hole three-dimensional orientation hydraulic jetting fracturing device, comprise orientation joint, housing, top connection, lower contact, nozzle and sliding sleeve switch, orientation joint is connected in top connection, the two ends of shell connect respectively top connection and lower contact, top connection is connected by hollow cavity with lower contact, on the sidewall of the close top connection of housing, offer screwed hole multiple and that housing is in a certain angle, in screwed hole, be installed with nozzle by helicitic texture, hollow cavity inside is provided with the sliding sleeve switch of Control Nozzle opening and closing, sliding sleeve switch is can pitching switch, the utility model can make spout in horizontal plane in high angle hole pressure break, can aim at a certain principal direction of stress and implement pressing crack construction, solve high angle hole pressure break initial cracking pressure high, form nearly well multiple cracking, the drawbacks such as Yi Sha is stifled.In addition, because jet is to contact at a certain angle housing and rock, return spatter phenomenon can be more weak, be conducive to protect nozzle and housing.
Description
Technical field
The utility model relates to the manufacturing technology application, particularly a kind of high angle hole three-dimensional orientation hydraulic jetting fracturing device of oil and gas well drilling equipment.
Background technology
It is to grow up that multi-stage water power sprays fracturing technique the end of the nineties, is also foreign applications technology more widely, is the product that jetting and fracturing technique combine.In hydrodynamic force, Guan Liuke is divided into multiple, wherein mouth stream is exactly a kind of high-velocity tube stream, carry out jet perforating pressure break according to fluid jet principle, belong to submerged non-free jet, when jetting, each nozzle is exactly that an independent pipe stream sprays, and the partially liq of jet expansion speed is in boundary layer, and jet-core region keeps the partially liq of muzzle velocity to be called constant speed core.
Existing hydraulic jetting fracturing device mainly contains following shortcoming:
When high angle hole pressure break initial cracking pressure high, form nearly well multiple cracking, easy sand plug, prior art is not carried out special setting at hydrojet nozzle simultaneously, has therefore been emptied nozzle by backwash injury, causes the situation of nozzle tool failures often to occur.
2. the direction of nozzle current ejection of the prior art is all horizontal direction, can not adjust, and the initial crack initiation direction in eyelet direction, biggest principal stress direction and crack is all inconsistent, and fracturing effect is bad.
Utility model content
For the problems referred to above, the utility model provides a kind of high angle hole three-dimensional orientation hydraulic jetting fracturing device.
For achieving the above object, the utility model comprises orientation joint, housing, top connection, lower contact, nozzle and sliding sleeve switch, orientation joint is connected in top connection, the two ends of shell connect respectively top connection and lower contact, top connection is connected by hollow cavity with lower contact, on the sidewall of the close top connection of housing, offer hole multiple and that housing is in a certain angle, method by helicitic texture or welding in hole is installed nozzle, nozzle is communicated with the hollow cavity in housing, the angle that the spout of nozzle and the angle of housing equal stratum and plumb line deducts hole angle, make nozzle towards the horizontal minimum principal stress of rock and the place plane of horizontal major principal stress.
Further, nozzle orientation is towards horizontal biggest principal stress direction.
Further, the angle angle of nozzle and housing is 15-45 degree, and nozzle is 2 groups and according to 90 degree phase place settings, and the number of every group is 2-3, and the diameter of each nozzle is 2.5-8 millimeter.
Further, hollow cavity inside is provided with the sliding sleeve switch of Control Nozzle opening and closing, sliding sleeve switch is can pitching switch, comprises the sliding sleeve that axially can slide along hollow cavity and is positioned at the pressure break ball of the inner one end of sliding sleeve, and housing mid portion is provided with the pin of fixing sliding sleeve switch position.
The utility model mainly contains following beneficial effect:
1. the advantage of this instrument is to utilize the feature of abradant jet directional, can form at a certain angle the eyelet forming an angle with housing through housing and in stratum.This is that kinetic transformation has become pressure energy during due to the bottom of high-speed jet impingement holes, and the place of pressure maximum is in eyelet bosom, and namely stress is subject to high angle hole to affect minimum place primitively.In this manner, the initial crack initiation direction in eyelet direction, biggest principal stress direction and crack is basically identical, and therefore, the method will have good three-dimensional orientation effect.
2. there is certain angle in the nozzle in this design, and therefore this instrument can effectively prevent the tool damage causing due to working fluid backwash in hydraulic jet perforation process.
Brief description of the drawings
Fig. 1 is the structural representation under the utility model hydraulic jeting device closed condition;
Fig. 2 is the structural representation under the utility model hydraulic jeting device opening.
In figure, 1, nozzle; 2, housing; 3, pin; 4, top connection screw thread; 5, sliding sleeve switch; 6, pressure break ball; 7, lower contact; 8, lower contact screw thread; 9, top connection.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, a kind of high angle hole three-dimensional orientation hydraulic jetting fracturing device, comprise orientation joint, housing 2, top connection 9, lower contact 7, nozzle 1 and sliding sleeve switch 5, orientation joint is connected in top connection, the two ends of shell connect respectively top connection and lower contact, top connection is connected by hollow cavity with lower contact, on the sidewall of the close top connection of housing, offer screwed hole multiple and that housing is in a certain angle, in screwed hole, be installed with nozzle by helicitic texture, nozzle is communicated with the hollow cavity in housing, hollow cavity inside is provided with the sliding sleeve switch of Control Nozzle opening and closing, sliding sleeve switch is can pitching switch, comprise the sliding sleeve that axially can slide along hollow cavity and the pressure break ball 6 that is positioned at the inner one end of sliding sleeve, the spout of nozzle and the angle of housing equal 90 degree and deduct hole angle, make nozzle towards the horizontal minimum principal stress of rock and the place plane of horizontal major principal stress.Housing mid portion is provided with the pin 3 of fixing sliding sleeve switch position.Top connection is the cone shape that inwall has screw thread 4, and lower contact is the cone shape that outer wall has screw thread 8, and lower contact can match with the screw thread of top connection, thereby multiple fracturing devices are connected together.
When work, high-pressure water shot fails to be convened for lack of a quorum and in hole, has suppressed pressure, and can around eyelet, produce microcrack before fracture initiation expansion.Therefore stop adding abrasive material after perforation completes in, also need suitable gaza, husky than between 5%-15%, to fill the secondary crack of microcrack and formation.In high angle hole pressure break, due to hole angle at 55 degree between 85 degree, therefore in high angle hole pressure break the angle of nozzle at 15 degree between 45 degree.For the well of other gradients, ensure that nozzle is on the vertical plane at horizontal minimum principal stress place.In order to ensure this instrument cutting rock smoothly, the jet expansion jet velocity of this instrument need reach 120-170 metre per second (m/s)s per second.In the abrasive perforating stage, working fluid need adopt the abradant jet of every cubic metre to 150 kilograms every cubic metre of double centner to carry out hydraulic jet perforation.Nozzle is connected with housing by screw thread with after nozzle cage welding.
Claims (4)
1. a high angle hole three-dimensional orientation hydraulic jetting fracturing device, comprise orientation joint, housing, top connection, lower contact, nozzle and sliding sleeve switch, described orientation joint is connected in described top connection, the two ends of described shell connect respectively top connection and lower contact, top connection is connected by hollow cavity with lower contact, on the sidewall of the close top connection of described housing, offer hole multiple and that housing is in a certain angle, method by helicitic texture or welding in described hole is installed nozzle, described nozzle is communicated with the hollow cavity in housing, the angle that the spout of described nozzle and the angle of housing equal stratum and plumb line deducts hole angle, make described nozzle towards the horizontal minimum principal stress of rock and the place plane of horizontal major principal stress.
2. a kind of high angle hole three-dimensional orientation hydraulic jetting fracturing device according to claim 1, is characterized in that, nozzle orientation is towards horizontal biggest principal stress direction.
3. a kind of high angle hole three-dimensional orientation hydraulic jetting fracturing device according to claim 1, it is characterized in that, the angle angle of described nozzle and described housing is 15-45 degree, described nozzle is 2 groups and according to 90 degree phase place settings, the number of every group is 2-3, and the diameter of each nozzle is 2.5-8 millimeter.
4. a kind of high angle hole three-dimensional orientation hydraulic jetting fracturing device according to claim 1, it is characterized in that, hollow cavity inside is provided with the sliding sleeve switch of Control Nozzle opening and closing, described sliding sleeve switch is can pitching switch, comprise the sliding sleeve that axially can slide along hollow cavity and the pressure break ball that is positioned at the inner one end of sliding sleeve, described housing mid portion is provided with the pin of fixing sliding sleeve switch position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420384285.9U CN203948080U (en) | 2014-07-09 | 2014-07-09 | A kind of high angle hole three-dimensional orientation hydraulic jetting fracturing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420384285.9U CN203948080U (en) | 2014-07-09 | 2014-07-09 | A kind of high angle hole three-dimensional orientation hydraulic jetting fracturing device |
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| CN203948080U true CN203948080U (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420384285.9U Active CN203948080U (en) | 2014-07-09 | 2014-07-09 | A kind of high angle hole three-dimensional orientation hydraulic jetting fracturing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047586A (en) * | 2014-07-09 | 2014-09-17 | 徐梓辰 | Three-dimensional oriented hydraulic jet fracturing device for highly-deviated well |
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2014
- 2014-07-09 CN CN201420384285.9U patent/CN203948080U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047586A (en) * | 2014-07-09 | 2014-09-17 | 徐梓辰 | Three-dimensional oriented hydraulic jet fracturing device for highly-deviated well |
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| GR01 | Patent grant |