CN103711468A - Three-phase foam generator used for fracturing and application thereof - Google Patents
Three-phase foam generator used for fracturing and application thereof Download PDFInfo
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- CN103711468A CN103711468A CN201310726927.9A CN201310726927A CN103711468A CN 103711468 A CN103711468 A CN 103711468A CN 201310726927 A CN201310726927 A CN 201310726927A CN 103711468 A CN103711468 A CN 103711468A
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Abstract
The invention relates to a three-phase foam generator used for fracturing. The foam generator comprises a sand-carrying fluid injection pipe, wherein the sand-carrying fluid injection pipe is communicated with a foam fracturing fluid discharge pipe through an inner pipe and oscillating pipes in sequence, the inner pipe is sleeved with a main pipe, the two ends of the main pipe are in sealing connection with the surface of the inner pipe, a gas distributing pipe and a slagging pipe are arranged on the main pipe in a through mode, and a gas injection seam is formed in the surface of the inner pipe; each oscillating pipe comprises a first three-way pipe and a second three-way pipe, the first three-way pipe and the corresponding second three-way pipe are arranged oppositely, each three-way pipe comprises a main pipe and two branch pipes, the two branch pipes of the first three-way pipe are communicated with the two branch pipes of the corresponding second three-way pipe respectively, an inlet of each oscillating pipe serves as the main pipe of the corresponding first three-way pipe, and an outlet of each oscillating pipe serves as the main pipe of the corresponding second three-way pipe. The three-phase foam generator used for fracturing can bear large pressure (0-100MPa) and can bear the impact of solid particles. Meanwhile, the number of the oscillating pipes can be adjusted as needed to achieve multi-stage oscillation, so that gas, propping agent particles and foam base fluid are fully mixed through oscillation, bubbles in foam fracturing fluid are made dense and even, and stability is good.
Description
Technical field
The present invention relates to three-phase froth generator and application thereof for a kind of pressure break, belong to the technical field that petroleum gas foam fracturing produces the mechanical generating means of aerated fluid.
Background technology
Review domestic foam fracturing course, as far back as 20 century 70s, the foam fracturing fluid Jiu U.S. takes the lead in being applied, and system is ripe to develop into now external foam fracturing technique.Domestic the research of foam fracturing and application are started to the later stage eighties in last century.Within 1988, N has successfully been carried out in Liaohe Oil Field
2foam fracturing fluid construction, within 1997, Jilin Oil Field is introduced the CO of American SS company
2foam fracturing fluid equipment has carried out that oil reservoir is handled up and CO
2the application that helps row pressure to split, the prelude that has from then on pulled open domestic foam fracturing fluid research and applied.Foam fracturing fluid is promoted and is come in especially unconventional oil gas pressure break field, oil gas pressure break field just gradually.
The quality that foam fracturing fluid forms directly affects the prop-carrying capacity of foam, anti-filtration capacity, and anti-shear ability and the row's of returning ability, and then affect construction safety and the effect of increasing production of foam fracturing.Existing foam maker is owing to just foaming for gas-liquid two-phase, and internal construction impact resistance is poor, and in foam fracturing construction, the impact that cannot resist solid phase support agent particle, easily causes security incident.
The disclosed foam maker of Chinese patent CN2743529, gas and liquid are managed after interior mixing mother, enter fixing spiral and stir piece stirring formation foam.Spiral stirs piece and alternately consists of 4 right-hand screws stirring pieces and 4 left-hand screws stirring pieces.The spiral of this device stirs piece part and under condition of high voltage, resists the impact of solid phase particles, the ability of wearing and tearing is poor, be not suitable for producing three-phase froth, and this device can only carry out one-level foaming, the particle size of uncontrollable generation foam and the uniformity.
Summary of the invention
For the deficiencies in the prior art, the invention provides the three-phase froth generator of a kind of pressure break for gas, liquid, solid, this generator overcomes the poor deficiency of the anti-solid phase particles impact capacity of existing foam maker, can produce fine and close evenly and carry the three-phase froth generator of solid particle aerated fluid.
The present invention also provides the application of a kind of above-mentioned pressure break with three-phase froth generator.
Technical solution of the present invention is:
A pressure break three-phase froth generator, comprises that load fluid ascending pipe, described load fluid ascending pipe are connected by inner tube, concussion pipe and foam fracturing fluid discharge pipe in turn; Outer cover in described inner tube is provided with female pipe, and the two ends of described female pipe are connected with the face seal of described inner tube; On described female pipe, connect and be provided with gas-distribution pipe and scum pipe; On the surface of described inner tube, be provided with gas and spray seam; The effect of described inner tube is that gas, proppant particles and foam base fluid are mixed for the first time, and the effect of described female pipe is to make gas uniform enter liquid and the fine grained leaking in inner tube while support inner tube; Gas enters after female pipe by gas-distribution pipe, sprays seam injection enter inner tube through gas, fully mixes for the first time with the load fluid that enters inner tube by load fluid ascending pipe;
Described concussion pipe comprises the first tee piece and the second tee piece being oppositely arranged, and described tee piece comprises a house steward and two arms, and two arms of described the first tee piece are communicated with setting with two arms of described the second tee piece respectively; The entrance of described concussion pipe is the house steward of described the first tee piece, and the outlet of described concussion pipe is the house steward of described the second tee piece.The effect of described concussion pipe is to make gas, proppant particles, foam base fluid fully shake mixing, forms and meets quality requirement foam fracturing fluid.
Preferred according to the present invention, the gas arranging on the surface of described inner tube sprays area and the S of seam
gross sectioncross-sectional area S with described gas-distribution pipe
gas-distribution pipewith inner tube cross-sectional area S
inner tuberelation as follows:
S
gross section=1/2S
gas-distribution pipe=1/4S
inner tube.The advantage of design is herein, adopts the gas of certain accounting to spray seam, makes described pressure break can go out with the shortest Timing the foam of appropriate particle size with three-phase froth generator when the pressure break.
Preferred according to the present invention, the described arm in described concussion pipe and the angle β between described house steward are 30 °～45 °.
Preferred according to the present invention, described arm and the angle β between described house steward in described concussion pipe are 35 °; Described house steward's length is 10.00cm, and internal diameter is 7.63cm; The length of described arm is 15.00cm, and internal diameter is 5.20cm.The concussion pipe of angle preferred for this invention and structure makes gas, proppant particles, the foam base fluid three-phase of flowing through produce concussion, mixes fully, greatly reduces the impact of solid, liquid, gas three-phase pressure break raw material to angle inner-walls of duct simultaneously.
Preferred according to the present invention, described inner tube is connected by adpting flange with the adjacent entrance that concussion pipe is set.
Preferred according to the present invention, the quantity of described concussion pipe is one or more, and the outlet of described concussion pipe is connected by adpting flange with the adjacent entrance that concussion pipe is set.The advantage of design is herein: described concussion pipe can select quantity to carry out cascade according to actual needs, between described concussion pipe, by flange, connects, and can form the three-phase froth generator with multistage concussion structure; According to parameters such as the physical parameter of fracturing stratum, fracturing fluid infusion speed, fracturing fluid sand compare, select the optimum bubble diameter of foam fracturing fluid: by adjusting the quantity of described concussion pipe and then turning down the bubble diameter that forms foam fracturing fluid, thereby reach optimal value.
Preferred according to the present invention, one end of described scum pipe adopts flange shutoff setting.
Preferred according to the present invention, described concussion pipe comprises internal layer earthenware and outer stainless steel tube, and described internal layer earthenware is embedded on the inwall of described outer stainless steel tube.The advantage herein relating to is, ceramic embedded stainless steel tube has the following advantages: wear-resisting, withstand voltage, corrosion-resistant.
Preferred according to the present invention, the earthenware thickness 6.00mm in described house steward, the stainless steel tube thickness 6.65mm in described house steward; Earthenware thickness 5.00mm in described arm, the stainless steel tube thickness 5.51mm in described arm.
An application for three-phase froth generator for above-mentioned pressure break, comprises the steps:
(1) pressure testing: described pressure break is connected on the fracture used high-pressure pipeline of assembling valve with the foam fracturing fluid discharge pipe of three-phase froth generator, valve-off, to described pressure break with passing into fracturing fluid base fluid in three-phase froth generator, keep the highest operation pressure 30-40min, build the pressure, do not sting do not leak be qualified;
(2) form foam: by load fluid pass into load fluid ascending pipe, gas passes into gas-distribution pipe, keep the pressure of described gas-distribution pipe to be greater than the pressure of load fluid ascending pipe, and keep pressure pressure reduction between described load fluid ascending pipe and described gas-distribution pipe to be less than 1MP, until foam operation slug finishes, complete pressing crack construction;
(3) deslagging: described pressure break is shed to pressure with three-phase froth generator, open scum pipe flange, discharge fine grained and residual liquid.
Beneficial effect of the present invention:
The present invention bears larger pressure (0-100MPa), can bear the impact of solid phase particles, can adjust as required concussion pipe quantity simultaneously and complete multistage concussion, make gas, proppant particles, foam base fluid fully shake mixing, make in foam fracturing fluid bubble evenly fine and close, stability is good.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described, but be not limited to this.
Fig. 1 is structural representation of the present invention;
Fig. 2 is inner tube structure schematic diagram of the present invention;
Fig. 3 is the I--I sectional view of Fig. 2;
The sectional view of Fig. 4 tee piece.
1. load fluid ascending pipes in figure, 2. female pipe, 3. inner tube, 4. gas sprays seam, 5. gas-distribution pipe, 6. scum pipe, 7. extremely stifled, 8. adpting flange, 9. concussion pipe, 9-1, the first tee piece; 9-2, the second tee piece; 10. tee piece house steward; Two arms of 10-1. tee piece; 11. foam fracturing fluid discharge pipes, 12. internal layer earthenwares, 13. outer stainless steel tubes.
The specific embodiment
Below in conjunction with embodiment and Figure of description, the present invention is described in detail, but is not limited to this.
As Figure 1-4.
A pressure break three-phase froth generator, comprises that load fluid ascending pipe 1, described load fluid ascending pipe 1 are connected by inner tube 3, concussion pipe 9 and foam fracturing fluid discharge pipe 11 in turn; Outer cover in described inner tube 3 is provided with female pipe 2, and the two ends of described female pipe 2 are connected with the face seal of described inner tube 3; On described female pipe 2, connect and be provided with gas-distribution pipe 5 and scum pipe 6; On the surface of described inner tube 3, be provided with gas and spray seam 4;
Described concussion pipe 9 comprises the first tee piece 9-1 and the second tee piece 9-2 being oppositely arranged, described tee piece comprises a house steward 10 and two arm 10-1, and two arms of described the first tee piece 9-1 are communicated with setting with two arms of described the second tee piece 9-2 respectively; The entrance of described concussion pipe 9 is the house steward of described the first tee piece, and the outlet of described concussion pipe is the house steward of described the second tee piece.
Described inner tube 3 is connected by adpting flange with the adjacent entrance that concussion pipe is set.
The quantity of described concussion pipe 9 is one or more, and the outlet of described concussion pipe 9 is connected by adpting flange with the adjacent entrance that concussion pipe 9 is set.
One end of described scum pipe 6 adopts flange shutoff setting.
Embodiment 2,
A pressure break three-phase froth generator as described in Example 1, its difference is, the gas arranging on the surface of described inner tube sprays area and the S of seam
gross sectioncross-sectional area S with described gas-distribution pipe
gas-distribution pipewith inner tube cross-sectional area S
inner tuberelation as follows:
S
gross section=1/2S
gas-distribution pipe=1/4S
inner tube.
A pressure break three-phase froth generator as described in Example 1, its difference is, described arm and the angle β between described house steward in described concussion pipe are 35 °; Described house steward's length is 10.00cm, and internal diameter is 7.63cm; The length of described arm is 15.00cm, and internal diameter is 5.20cm.
A pressure break three-phase froth generator as described in Example 1, its difference is, and described concussion pipe 9 comprises internal layer earthenware 12 and outer stainless steel tube 13, and described internal layer earthenware 12 is embedded on the inwall of described outer stainless steel tube 13.Earthenware thickness 6.00mm in described house steward, the stainless steel tube thickness 6.65mm in described house steward; Earthenware thickness 5.00mm in described arm, the stainless steel tube thickness 5.51mm in described arm.
Embodiment 5,
The application of three-phase froth generator for pressure break as described in embodiment 1-4, comprises the steps:
(1) pressure testing: described pressure break is connected on the fracture used high-pressure pipeline of assembling valve with the foam fracturing fluid discharge pipe of three-phase froth generator, valve-off, to described pressure break with passing into fracturing fluid base fluid in three-phase froth generator, keep the highest operation pressure 30-40min, build the pressure, do not sting do not leak be qualified;
(2) form foam: by load fluid pass into load fluid ascending pipe, gas passes into gas-distribution pipe, keep the pressure of described gas-distribution pipe to be greater than the pressure of load fluid ascending pipe, and keep pressure pressure reduction between described load fluid ascending pipe and described gas-distribution pipe to be less than 1MP, until foam operation slug finishes, complete pressing crack construction;
(3) deslagging: described pressure break is shed to pressure with three-phase froth generator, open scum pipe flange, discharge fine grained and residual liquid.
Claims (10)
1. a pressure break three-phase froth generator, is characterized in that, this generator comprises that load fluid ascending pipe, described load fluid ascending pipe are connected by inner tube, concussion pipe and foam fracturing fluid discharge pipe in turn; Outer cover in described inner tube is provided with female pipe, and the two ends of described female pipe are connected with the face seal of described inner tube; On described female pipe, connect and be provided with gas-distribution pipe and scum pipe; On the surface of described inner tube, be provided with gas and spray seam;
Described concussion pipe comprises the first tee piece and the second tee piece being oppositely arranged, and described tee piece comprises a house steward and two arms, and two arms of described the first tee piece are communicated with setting with two arms of described the second tee piece respectively; The entrance of described concussion pipe is the house steward of described the first tee piece, and the outlet of described concussion pipe is the house steward of described the second tee piece.
2. a kind of pressure break three-phase froth generator according to claim 1, is characterized in that, the gas arranging on the surface of described inner tube sprays area and the S of seam
gross sectioncross-sectional area S with described gas-distribution pipe
gas-distribution pipewith inner tube cross-sectional area S
inner tuberelation as follows:
S
gross section=1/2S
gas-distribution pipe=1/4S
inner tube.
3. a kind of pressure break three-phase froth generator according to claim 1, is characterized in that, the described arm in described concussion pipe and the angle β between described house steward are 30 °～45 °.
4. a kind of pressure break three-phase froth generator according to claim 3, is characterized in that, described arm and the angle β between described house steward in described concussion pipe are 35 °; Described house steward's length is 10.00cm, and internal diameter is 7.63cm; The length of described arm is 15.00cm, and internal diameter is 5.20cm.
5. a kind of pressure break three-phase froth generator according to claim 1, is characterized in that, described inner tube is connected by adpting flange with the adjacent entrance that concussion pipe is set.
6. a kind of pressure break three-phase froth generator according to claim 1, is characterized in that, the quantity of described concussion pipe is one or more, and the outlet of described concussion pipe is connected by adpting flange with the adjacent entrance that concussion pipe is set.
7. a kind of pressure break three-phase froth generator according to claim 1, is characterized in that, one end of described scum pipe adopts flange shutoff setting.
8. a kind of pressure break three-phase froth generator according to claim 1, is characterized in that, described concussion pipe comprises internal layer earthenware and outer stainless steel tube, and described internal layer earthenware is embedded on the inwall of described outer stainless steel tube.
9. a kind of pressure break three-phase froth generator according to claim 8, is characterized in that, the earthenware thickness 6.00mm in described house steward, the stainless steel tube thickness 6.65mm in described house steward; Earthenware thickness 5.00mm in described arm, the stainless steel tube thickness 5.51mm in described arm.
10. an application for three-phase froth generator for pressure break as described in claim 1-9, comprises the steps:
(1) pressure testing: described pressure break is connected on the fracture used high-pressure pipeline of assembling valve with the foam fracturing fluid discharge pipe of three-phase froth generator, valve-off, to described pressure break with passing into fracturing fluid base fluid in three-phase froth generator, keep the highest operation pressure 30-40min, build the pressure, do not sting do not leak be qualified;
(2) form foam: by load fluid pass into load fluid ascending pipe, gas passes into gas-distribution pipe, keep the pressure of described gas-distribution pipe to be greater than the pressure of load fluid ascending pipe, and keep pressure pressure reduction between described load fluid ascending pipe and described gas-distribution pipe to be less than 1MP, until foam operation slug finishes, complete pressing crack construction;
(3) deslagging: described pressure break is shed to pressure with three-phase froth generator, open scum pipe flange, discharge fine grained and residual liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310726927.9A CN103711468B (en) | 2013-12-25 | 2013-12-25 | Three-phase foam generator used for fracturing and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310726927.9A CN103711468B (en) | 2013-12-25 | 2013-12-25 | Three-phase foam generator used for fracturing and application thereof |
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| CN103711468A true CN103711468A (en) | 2014-04-09 |
| CN103711468B CN103711468B (en) | 2017-01-25 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033143A (en) * | 2014-06-23 | 2014-09-10 | 中国石油大学(华东) | Formation method of nitrogen foam ground for oil-gas well fracturing |
| CN110905475A (en) * | 2019-11-20 | 2020-03-24 | 中国石油大学(北京) | Anhydrous foam generator for fracturing shale oil and gas reservoir and application thereof |
| CN110898741A (en) * | 2019-12-12 | 2020-03-24 | 中国石油大学(北京) | Oil field is with fly ash reinforcing foam forming device and application thereof |
| CN111396016A (en) * | 2020-03-25 | 2020-07-10 | 中国石油大学(北京) | Shale oil gas high-characteristic-value foam fracturing fluid forming device and application thereof |
| CN112473418A (en) * | 2020-11-06 | 2021-03-12 | 中国石油大学(北京) | Super-dry carbon dioxide foam generating device for continuous oil pipe and application thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| US10961830B1 (en) | 2019-11-20 | 2021-03-30 | China University of Petroleum—Beijing | Waterless foam generator for fracturing shale oil and gas reservoirs and use thereof |
| CN110898741A (en) * | 2019-12-12 | 2020-03-24 | 中国石油大学(北京) | Oil field is with fly ash reinforcing foam forming device and application thereof |
| CN111396016A (en) * | 2020-03-25 | 2020-07-10 | 中国石油大学(北京) | Shale oil gas high-characteristic-value foam fracturing fluid forming device and application thereof |
| CN111396016B (en) * | 2020-03-25 | 2020-12-29 | 中国石油大学(北京) | Shale oil gas high-characteristic-value foam fracturing fluid forming device and application thereof |
| CN112473418A (en) * | 2020-11-06 | 2021-03-12 | 中国石油大学(北京) | Super-dry carbon dioxide foam generating device for continuous oil pipe and application thereof |
| CN112473418B (en) * | 2020-11-06 | 2021-07-02 | 中国石油大学(北京) | Super-dry carbon dioxide foam generating device for continuous oil pipe and application thereof |
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| CN103711468B (en) | 2017-01-25 |
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Application publication date: 20140409 Assignee: DONGYING HUIJUFENG PETROLEUM TECHNOLOGY CO., LTD. Assignor: China University of Petroleum (East China) Contract record no.: X2020370010002 Denomination of invention: Three-phase foam generator used for fracturing and application thereof Granted publication date: 20170125 License type: Common License Record date: 20200120 |