CN103711468B - 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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- CN103711468B CN103711468B CN201310726927.9A CN201310726927A CN103711468B CN 103711468 B CN103711468 B CN 103711468B CN 201310726927 A CN201310726927 A CN 201310726927A CN 103711468 B CN103711468 B CN 103711468B
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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 a kind of pressure break three-phase froth generator and its application, belong to petroleum gas foam fracturing and produce
The technical field of the mechanical generating meanss of aerated fluid.
Background technology
Review domestic foam fracturing course, early in 20 century 70s, foam fracturing fluid just takes the lead in being answered in the U.S.
With development external foam fracturing technique system maturation till now.The domestic research to foam fracturing and application start from previous generation
Record the later stage eighties.Liaohe Oil Field is successfully made n within 19882Foam fracturing fluid is constructed, and Jilin Oil Field introduces the U.S. within 1997
Ss company co2Foam fracturing fluid equipment has carried out oil reservoir and has handled up and co2Help the application that row pressure is split, pull open domestic foam pressure from this
Split the prelude of liquid research and application.Foam fracturing fluid just gradually pushes away in oil gas pressure break field especially unconventionaloil pool pressure break field
Set up in a wide range.
The quality that foam fracturing fluid is formed directly affects the prop-carrying capacity of foam, anti-filtration capacity, 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 due to just for gas-liquid
Biphase foamed, internal structure impact resistance is poor, it is impossible to opposing the rushing of solid phase support agent granule in foam fracturing construction
Hit, easily cause security incident.
After foam maker disclosed in Chinese patent cn2743529, gas and liquid mix in main pipe, enter fixation
The stirring of auger block forms foam.Auger block is alternately made up of 4 right-hand screw stirring blocks and 4 left-hand screw stirring blocks.
The auger block portion of this device divides the ability of the impact of opposing solid phase particles under elevated pressure conditions, abrasion poor, is not suitable for producing
Raw three-phase froth, and this device can only carry out one-level foaming it is impossible to control the size producing foam and the uniformity.
Content of the invention
For the deficiencies in the prior art, the present invention provides a kind of three-phase froth generator for gas, liquid, solid for pressure break,
This generator overcomes the shortcomings of that existing foam maker anti-solid phase particles impact capacity is poor, can produce dense uniform and carry solid
The three-phase froth generator of body particle foam fluid.
The present invention also provides a kind of application of above-mentioned pressure break three-phase froth generator.
Technical solution of the present invention is:
A kind of pressure break three-phase froth generator, sequentially pass through including load fluid ascending pipe, described load fluid ascending pipe in
Pipe, concussion pipe are connected with foam fracturing fluid discharge pipe；Be arranged with main pipe in the outside of said inner tube, the two ends of described main pipe with
The face seal of said inner tube connects；In described main pipe, insertion is provided with gas-distribution pipe and scum pipe；Surface in said inner tube
It is provided with gas injection seam；The effect of said inner tube is so that gas, proppant particles and foam base fluid is mixed for the first time, described mother
The effect of pipe is to make gas even into the liquid of leakage and fine grained in inner tube simultaneously support inner tube；Gas is entered by gas-distribution pipe
After entering main pipe, it is injected into inner tube through gas injection seam, fill with the load fluid first time entering inner tube by load fluid ascending pipe
Divide mixing；
Described concussion pipe includes the first tee T and the second tee T being oppositely arranged, and described tee T always includes one
Pipe and two arms, two arms of described first tee T are connected with two arms of described second tee T respectively and set
Put；The entrance of described concussion pipe is the house steward of described first tee T, and the outlet of described concussion pipe is described second tee T
House steward.The effect of described concussion pipe is to make gas, proppant particles, the mixing of foam base fluid fully shaking, and formation meets quality will
Seek foam fracturing fluid.
According to currently preferred, in area and the s of the gas injection seam of the surface of said inner tube settingTotal cross sectionJoin with described
The cross-sectional area s of tracheaGas-distribution pipeWith inner tube cross-sectional area sInner tubeRelation as follows:
sTotal cross section=1/2sGas-distribution pipe=1/4sInner tube.The advantage herein designing is, using the gas injection seam of certain accounting, makes institute
State the foam that pressure break three-phase froth generator can go out appropriate particle size in pressure break with time adjustment the shortest.
According to currently preferred, the angle β between described arm in described concussion pipe and described house steward is 30 °～
45°.
According to currently preferred, the angle β between described arm in described concussion pipe and described house steward is 35 °；Institute
The length stating house steward is 10.00cm, and internal diameter is 7.63cm；The length of described arm is 15.00cm, and internal diameter is 5.20cm.This
Gas that the concussion pipe of bright institute's optimized angle and structure flows through, proppant particles, foam base fluid three-phase produce concussion, and mixing is filled
Point, substantially reduce the impact to angle inner-walls of duct for the solid, liquid, gas three-phase pressure break raw material simultaneously.
According to currently preferred, said inner tube is passed through adpting flange with the entrance being disposed adjacent concussion pipe and is connected.
According to currently preferred, the quantity of described concussion pipe is one or more, the outlet of described concussion pipe with adjacent
The entrance of setting concussion pipe passes through adpting flange and is connected.The advantage herein designing is: described concussion pipe can need according to actual
Quantity to be selected is cascaded, and is connected by flange between described concussion pipe, you can form the three-phase bubble with multistage concussion structure
Foam generator；According to the physical parameter of fracturing stratum, fracturing fluid infusion speed, fracturing fluid sand than etc. parameter select foam fracturing fluid
Optimum bubble diameter: by adjusting the described concussion quantity of pipe and then turning down the bubble diameter forming foam fracturing fluid, from
And reach optimal value.
According to currently preferred, one end of described scum pipe adopts flange closure setting.
According to currently preferred, described concussion pipe includes internal layer earthenware and outer layer stainless steel tube, described internal layer pottery
Pipe is embedded on the inwall of described outer layer stainless steel tube.The advantage herein being related to is, the embedded stainless steel tube of pottery has following
Advantage: wear-resisting, pressure, corrosion-resistant.
According to currently preferred, in described house steward ceramic tube thickness 6.00mm, the rustless steel thickness of pipe in described house steward
Degree 6.65mm；Ceramic tube thickness 5.00mm in described arm, the stainless steel tube thickness 5.51mm in described arm.
A kind of above-mentioned pressure break application of three-phase froth generator, comprises the steps:
(1) pressure testing: the foam fracturing fluid discharge pipe of described pressure break three-phase froth generator is connected to assembling valve
On fracture used high-pressure pipeline, close valve, be passed through fracturing fluid base fluid in described pressure break three-phase froth generator, keep highest
Operation pressure 30-40min, is built the pressure, and does not pierce and does not leak as qualified；
(2) form foam: load fluid is passed through load fluid ascending pipe, gas is passed through gas-distribution pipe, keeps described gas-distribution pipe
Pressure is more than the pressure of load fluid ascending pipe, and keeps pressure pressure reduction between described load fluid ascending pipe and described gas-distribution pipe to be less than
1mp, until foam operation slug terminates, completes pressing crack construction；
(3) deslagging: described pressure break three-phase froth generator is shed pressure, opens deslagging pipe flange, discharge fine grained
And residual liquid.
Beneficial effects of the present invention:
The present invention bears larger pressure (0-100mpa), can bear the impact of solid phase particles, simultaneously can be as needed
Adjustment concussion pipe quantity completes multistage concussion, makes gas, proppant particles, the mixing of foam base fluid fully shaking, makes foam fracturing
Bubble dense uniform in liquid, stability is good.
Brief description
The present invention is further described with reference to the accompanying drawings and examples, but not limited to this.
Fig. 1 is present configuration schematic diagram；
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 T.
In figure 1. load fluid ascending pipe, 2. main pipe, 3. inner tube, 4. gas injection seam, 5. gas-distribution pipe, 6. scum pipe, 7. dead
Stifled, 8. adpting flange, 9. concussion pipe, 9-1, the first tee T；9-2, the second tee T；10. a house steward of tee T；10-
1. two arms of tee T；11. foam fracturing fluid discharge pipes, 12. internal layer earthenwares, 13. outer layer stainless steel tubes.
Specific embodiment
With reference to embodiment and Figure of description, the present invention is described in detail, but not limited to this.
As Figure 1-4.
Embodiment 1,
A kind of pressure break three-phase froth generator, sequentially passes through including load fluid ascending pipe 1, described load fluid ascending pipe 1
Inner tube 3, concussion pipe 9 are connected with foam fracturing fluid discharge pipe 11；It is arranged with main pipe 2, described main pipe in the outside of said inner tube 3
2 two ends are connected with the face seal of said inner tube 3；In described main pipe 2, insertion is provided with gas-distribution pipe 5 and scum pipe 6；Institute
The surface stating inner tube 3 is provided with gas injection seam 4；
Described concussion pipe 9 includes the first tee T 9-1 and the second tee T 9-2 being oppositely arranged, described tee T bag
Include a house steward 10 and two arm 10-1, two arms of described first tee T 9-1 respectively with described second tee T
Two arm connection settings of 9-2；The entrance of described concussion pipe 9 is the house steward of described first tee T, the going out of described concussion pipe
Mouth is the house steward of described second tee T.
Said inner tube 3 is passed through adpting flange with the entrance being disposed adjacent concussion pipe and is connected.
The quantity of described concussion pipe 9 is one or more, and entering of pipe 9 is shaken in exporting and being disposed adjacent of described concussion pipe 9
Mouth is connected by adpting flange.
One end of described scum pipe 6 adopts flange closure setting.
Embodiment 2,
A kind of pressure break three-phase froth generator as described in Example 1, its difference is, sets on the surface of said inner tube
The area of gas injection seam put and sTotal cross sectionCross-sectional area s with described gas-distribution pipeGas-distribution pipeWith inner tube cross-sectional area sInner tubeRelation such as
Under:
sTotal cross section=1/2sGas-distribution pipe=1/4sInner tube.
Embodiment 3,
A kind of pressure break three-phase froth generator as described in Example 1, its difference is, described in described concussion pipe
Angle β between arm and described house steward is 35 °；The length of described house steward is 10.00cm, and internal diameter is 7.63cm；Described arm
Length be 15.00cm, internal diameter be 5.20cm.
Embodiment 4,
A kind of pressure break three-phase froth generator as described in Example 1, its difference is, described concussion pipe 9 includes interior
Layer earthenware 12 and outer layer stainless steel tube 13, described internal layer earthenware 12 is embedded on the inwall of described outer layer stainless steel tube 13.
Ceramic tube thickness 6.00mm in described house steward, the stainless steel tube thickness 6.65mm in described house steward；Pottery in described arm
Tube thickness 5.00mm, the stainless steel tube thickness 5.51mm in described arm.
Embodiment 5,
The application of three-phase froth generator of pressure break as described in embodiment 1-4, comprises the steps:
(1) pressure testing: the foam fracturing fluid discharge pipe of described pressure break three-phase froth generator is connected to assembling valve
On fracture used high-pressure pipeline, close valve, be passed through fracturing fluid base fluid in described pressure break three-phase froth generator, keep highest
Operation pressure 30-40min, is built the pressure, and does not pierce and does not leak as qualified；
(2) form foam: load fluid is passed through load fluid ascending pipe, gas is passed through gas-distribution pipe, keeps described gas-distribution pipe
Pressure is more than the pressure of load fluid ascending pipe, and keeps pressure pressure reduction between described load fluid ascending pipe and described gas-distribution pipe to be less than
1mp, until foam operation slug terminates, completes pressing crack construction；
(3) deslagging: described pressure break three-phase froth generator is shed pressure, opens deslagging pipe flange, discharge fine grained
And residual liquid.
Claims (10)
1. a kind of pressure break three-phase froth generator is it is characterised in that this generator includes load fluid ascending pipe, described load fluid
Ascending pipe sequentially passes through inner tube, concussion pipe is connected with foam fracturing fluid discharge pipe；It is arranged with main pipe in the outside of said inner tube,
The two ends of described main pipe are connected with the face seal of said inner tube；In described main pipe, insertion is provided with gas-distribution pipe and scum pipe；
The surface of said inner tube is provided with gas injection seam；
Described concussion pipe includes the first tee T and the second tee T being oppositely arranged, described tee T include a house steward and
Two arms, two arms of described first tee T connect setting with two arms of described second tee T respectively；Described
The entrance of concussion pipe is the house steward of described first tee T, and the outlet of described concussion pipe is the house steward of described second tee T.
2. a kind of pressure break according to claim 1 with three-phase froth generator it is characterised in that surface in said inner tube
The area of gas injection seam of setting and sTotal cross sectionCross-sectional area s with described gas-distribution pipeGas-distribution pipeWith inner tube cross-sectional area sInner tubeRelation
As follows:
sTotal cross section=1/2sGas-distribution pipe=1/4sInner tube.
3. a kind of pressure break according to claim 1 with three-phase froth generator it is characterised in that institute in described concussion pipe
The angle β stating between arm and described house steward is 30 °～45 °.
4. a kind of pressure break according to claim 3 with three-phase froth generator it is characterised in that institute in described concussion pipe
The angle β stating between arm and described house steward is 35 °；The length of described house steward is 10.00cm, and internal diameter is 7.63cm；Described
The length of pipe is 15.00cm, and internal diameter is 5.20cm.
5. a kind of pressure break three-phase froth generator according to claim 1 is it is characterised in that said inner tube is set with adjacent
The entrance putting concussion pipe is connected by adpting flange.
6. a kind of pressure break according to claim 1 with three-phase froth generator it is characterised in that the quantity of described concussion pipe
For multiple, the outlet of described concussion pipe and be disposed adjacent the entrance of concussion pipe and pass through adpting flange and be connected.
7. a kind of pressure break according to claim 1 with three-phase froth generator it is characterised in that one end of described scum pipe
Setting is blocked using flange.
8. a kind of pressure break three-phase froth generator according to claim 1 is it is characterised in that in described concussion pipe includes
Layer earthenware and outer layer stainless steel tube, described internal layer earthenware is embedded on the inwall of described outer layer stainless steel tube.
9. a kind of pressure break according to claim 8 with three-phase froth generator it is characterised in that pottery in described house steward
Tube thickness 6.00mm, the stainless steel tube thickness 6.65mm in described house steward；Ceramic tube thickness 5.00mm in described arm, described
Stainless steel tube thickness 5.51mm in arm.
10. the pressure break application of three-phase froth generator as described in a kind of any one as claim 1-9, comprises the steps:
(1) pressure testing: the foam fracturing fluid discharge pipe of described pressure break three-phase froth generator is connected to the pressure break of assembling valve
With, on high pressure line, closing valve, it is passed through fracturing fluid base fluid in described pressure break three-phase froth generator, keep highest construction
Pressure 30-40min, is built the pressure, and does not pierce and does not leak as qualified；
(2) form foam: load fluid is passed through load fluid ascending pipe, gas is passed through gas-distribution pipe, keeps the pressure of described gas-distribution pipe
More than the pressure of load fluid ascending pipe, and pressure pressure reduction between described load fluid ascending pipe and described gas-distribution pipe is kept to be less than 1mp,
Until foam operation slug terminates, complete pressing crack construction；
(3) deslagging: described pressure break three-phase froth generator is shed pressure, opens deslagging pipe flange, discharge fine grained and residual
Extraction raffinate body.
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 |
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| CN201310726927.9A CN103711468B (en) | 2013-12-25 | 2013-12-25 | Three-phase foam generator used for fracturing and application thereof |
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| CN103711468B true CN103711468B (en) | 2017-01-25 |
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| CN104033143B (en) * | 2014-06-23 | 2017-02-15 | 中国石油大学(华东) | Formation method of nitrogen foam ground for oil-gas well fracturing |
| CN110905475B (en) | 2019-11-20 | 2020-08-14 | 中国石油大学(北京) | Anhydrous foam generator for fracturing shale oil and gas reservoir and application thereof |
| CN110898741B (en) * | 2019-12-12 | 2020-09-25 | 中国石油大学(北京) | Oil field is with fly ash reinforcing foam 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 |
| 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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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 |
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