CN104047586A - Three-dimensional oriented hydraulic jet fracturing device for highly-deviated well - Google Patents
Three-dimensional oriented hydraulic jet fracturing device for highly-deviated well Download PDFInfo
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- CN104047586A CN104047586A CN201410330981.6A CN201410330981A CN104047586A CN 104047586 A CN104047586 A CN 104047586A CN 201410330981 A CN201410330981 A CN 201410330981A CN 104047586 A CN104047586 A CN 104047586A
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Abstract
The invention discloses a three-dimensional oriented hydraulic jet fracturing device for a highly-deviated well, and an arrangement method of the three-dimensional oriented hydraulic jet fracturing device. The three-dimensional oriented hydraulic jet fracturing device comprises an oriented connector, a shell, an upper connector, a lower connector, spray nozzles and a slide sleeve switch. The oriented connector is connected to the upper connector. The two ends of the shell are connected with the upper connector and the lower connector respectively. The upper connector and the lower connector are connected through a hollow cavity. A plurality of threaded holes are formed in the portion, close to the upper connector, of the side wall of the shell, wherein certain included angles exit between the shell and the threaded holes. The spray nozzles are fixedly arranged in the threaded holes through threaded structures respectively. The slide sleeve switch for controlling opening and closing of the spray nozzles is arranged inside the hollow cavity. The slide sleeve switch can be a ball pitching switch. By means of the three-dimensional oriented hydraulic jet fracturing device, the spray nozzles are located on the horizontal plane in the fracturing process of the highly-deviated well and can be aligned with a certain principal stress direction for fracture construction implementation, the defects that the crack initiation pressure of highly-deviated well fracturing is high, multiple cracks exist in a formed near well and blockage caused by sand easily occurs are overcome, and due to the fact that jet flow makes contact with the shell and rock at a certain angle, the backward splashing phenomenon is weaker, and the spray nozzles and the shell are easily protected.
Description
Technical field
The present invention 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.
Summary of the invention
For the problems referred to above, the invention provides a kind of high angle hole three-dimensional orientation hydraulic jetting fracturing device.
For achieving the above object, the present invention includes 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 method to set up that simultaneously discloses a kind of high angle hole three-dimensional orientation hydraulic jetting fracturing device, comprises the steps:
The first, surveying work region hole angle, the direction of the minimum principal stress of surveying work regional stratum place plane and the horizontal major principal stress of place, stratum plane;
The second, before housing upper and lower side is all settled centralizer, gone into the well, nozzle orientation is aimed to orientation of principal stress, proofread and correct by rotary shell after in lower going-into-well, to ensure comprising orientation of principal stress in the place plane of nozzle and instrument;
The 3rd, unlatching work, 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.
The present invention 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 hydraulic jeting device closed condition of the present invention;
Fig. 2 is the structural representation under hydraulic jeting device opening of the present invention.
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 present invention will be further described.
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 (5)
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 orientation of principal stress.
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.
5. a method to set up for high angle hole three-dimensional orientation hydraulic jetting fracturing device as claimed in claim 1, comprises the steps:
The first, surveying work region hole angle, the direction of the minimum principal stress of surveying work regional stratum place plane and the horizontal major principal stress of place, stratum plane;
The second, before housing upper and lower side is all settled centralizer, gone into the well, nozzle orientation is aimed to orientation of principal stress, proofread and correct by rotary shell after in lower going-into-well, to ensure comprising orientation of principal stress in the place plane of nozzle and instrument;
The 3rd, unlatching work, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330981.6A CN104047586A (en) | 2014-07-09 | 2014-07-09 | Three-dimensional oriented hydraulic jet fracturing device for highly-deviated well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330981.6A CN104047586A (en) | 2014-07-09 | 2014-07-09 | Three-dimensional oriented hydraulic jet fracturing device for highly-deviated well |
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| CN104047586A true CN104047586A (en) | 2014-09-17 |
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| CN201410330981.6A Pending CN104047586A (en) | 2014-07-09 | 2014-07-09 | Three-dimensional oriented hydraulic jet fracturing device for highly-deviated well |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257270A (en) * | 2015-10-23 | 2016-01-20 | 西安石油大学 | Angle-adjustable oriented perforation and fracturing integrated tubular column for horizontal well |
| CN110344805A (en) * | 2019-07-16 | 2019-10-18 | 中国矿业大学 | A kind of down-hole drilling directional fracturing device and method |
| CN111088992A (en) * | 2020-01-13 | 2020-05-01 | 煤科集团沈阳研究院有限公司 | Ball throwing type high-pressure hydraulic drilling and cutting integrated penetration increasing device and penetration increasing method |
| CN111305787A (en) * | 2018-12-11 | 2020-06-19 | 中国石油化工股份有限公司 | Well completion method for carbonate reservoir ultra-deep horizontal well |
| CN111088992B (en) * | 2020-01-13 | 2024-04-30 | 中煤科工集团沈阳研究院有限公司 | Ball throwing type high-pressure hydraulic drilling and cutting integrated permeability increasing device and permeability increasing method |
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| US5499678A (en) * | 1994-08-02 | 1996-03-19 | Halliburton Company | Coplanar angular jetting head for well perforating |
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2014
- 2014-07-09 CN CN201410330981.6A patent/CN104047586A/en active Pending
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| US5499678A (en) * | 1994-08-02 | 1996-03-19 | Halliburton Company | Coplanar angular jetting head for well perforating |
| CN202249987U (en) * | 2011-09-15 | 2012-05-30 | 中国石油天然气股份有限公司 | Vulcanization resisting ejector |
| CN102619494A (en) * | 2012-04-16 | 2012-08-01 | 江苏如通石油机械股份有限公司 | Multi-section sliding sleeve type sand jet perforating and fracturing tool |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257270A (en) * | 2015-10-23 | 2016-01-20 | 西安石油大学 | Angle-adjustable oriented perforation and fracturing integrated tubular column for horizontal well |
| CN111305787A (en) * | 2018-12-11 | 2020-06-19 | 中国石油化工股份有限公司 | Well completion method for carbonate reservoir ultra-deep horizontal well |
| CN110344805A (en) * | 2019-07-16 | 2019-10-18 | 中国矿业大学 | A kind of down-hole drilling directional fracturing device and method |
| CN110344805B (en) * | 2019-07-16 | 2020-12-22 | 中国矿业大学 | Directional fracturing device and method for underground drilling |
| CN111088992A (en) * | 2020-01-13 | 2020-05-01 | 煤科集团沈阳研究院有限公司 | Ball throwing type high-pressure hydraulic drilling and cutting integrated penetration increasing device and penetration increasing method |
| CN111088992B (en) * | 2020-01-13 | 2024-04-30 | 中煤科工集团沈阳研究院有限公司 | Ball throwing type high-pressure hydraulic drilling and cutting integrated permeability increasing device and permeability increasing method |
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Application publication date: 20140917 |