CN1147054A - Perforation and acidification processing device for oil well - Google Patents
Perforation and acidification processing device for oil well Download PDFInfo
- Publication number
- CN1147054A CN1147054A CN 95116524 CN95116524A CN1147054A CN 1147054 A CN1147054 A CN 1147054A CN 95116524 CN95116524 CN 95116524 CN 95116524 A CN95116524 A CN 95116524A CN 1147054 A CN1147054 A CN 1147054A
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- CN
- China
- Prior art keywords
- side direction
- dividing plate
- preceding storehouse
- acid material
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000020477 pH reduction Effects 0.000 title abstract description 16
- 239000003129 oil well Substances 0.000 title description 4
- 239000000463 material Substances 0.000 claims abstract description 64
- 239000002253 acid Substances 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002360 explosive Substances 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000003380 propellant Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004663 powder metallurgy Methods 0.000 claims description 2
- 239000003721 gunpowder Substances 0.000 claims 1
- 239000007769 metal material Substances 0.000 claims 1
- 238000005474 detonation Methods 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000002378 acidificating effect Effects 0.000 abstract 3
- 239000011148 porous material Substances 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 239000000843 powder Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
A well completion equipment for perforating and acidifying includes ordinary perforator and post-effect part filled with acidic material, and features that the acidic material capable of forming (or generating) liquid acid under the action of underground environment and well liquid is put in front of perforator and is pushed into the hole channel punched by jet by high pressure generated by detonation of perforator charge. The acidic material reacts with well fluid in the pore channel to form liquid acid, and the liquid acid and the polluted layer of the pore channel carry out chemical reaction to complete the acidification treatment operation. The invention can save the fund, improve the operation efficiency and ensure that the acidification operation is simple and easy to implement.
Description
The present invention relates to a kind of completion system that perforation and two operations of acidification are combined, specifically driving metal jet by explosive charge penetrates oil pipe, cement layer, also penetrates enough dark duct in the petroliferous bed around, and then the high pressure that utilizes explosive detonation to produce pushes this duct with acid material, acid material forms liquid acid under the effect of subsurface environment and well liquid, and react with cell walls on every side, to finish the completion system of acidification, belong to class.
When oil exploration and oil recovery, to carry out drilling well and setting of casing earlier to the oil field as shown in Figure 1, using cement stabilization between sleeve pipe and the stratum, then the perforating gun that perforator is housed is lowered to appropriate depth in the sleeve pipe again, the perforator that detonates makes it get a passage between sleeve pipe and oil reservoir.Yet because the compaction of perforation, perforation pollutes and oil reservoir penetrating power different, and produce oil immediately usually after the perforation perhaps can not obtain the output of being satisfied with.Therefore also will carry out acidification shown in Figure 2, be about in the liquid acid sprue bushing such as hydrochloric acid, the sealing well head adds certain pressure with the acidifying car to the liquid acid that is enclosed in the sleeve pipe.After liquid acid enters the duct that perforator penetrates, react with on every side rock stratum, compacted lift and pollution layer that perforation is caused erode, and make the duct become thicker darker, are beneficial to the smooth outflow of unvenile water.Oil well after handling like this, output can obviously increase.Present problem is that acidification operation consumption is too big, and technology is loaded down with trivial details, and sleeve pipe and down-hole facility are had certain corrosiveness.
The present invention's purpose is exactly at the problems referred to above, a kind of completion system that possesses perforation and two kinds of functions of acidification is provided, two operations of perforation and acidification are once finished, so not only can save great amount of manpower and material resources and fund, and simple to operate, sleeve pipe and down-hole facility there are not corrosiveness.
The object of the present invention is achieved like this: a kind of completion system with perforation and two kinds of functions of acidification, it comprises common petroleum perforator and can finish the after effect part of acidification, its architectural feature is to fill in conventional gun the place ahead to add the acid material that can generate liquid acid under subsurface environment and the effect of well liquid, and the preceding storehouse of this acid material of splendid attire.
The circular hole that passes through for jet, detonation products and acid material is arranged at bottom, preceding storehouse, and inner surface is streamline or the broken line type that is easy to the acid material ejection.Preceding storehouse can be metal, powder metallurgy and other temperature-resistant material and makes.
Acid material is the material that can generate (or formation) liquid acid under subsurface environment and the effect of well liquid, and for low-density is rotated symmetrical block structure, inner surface stays a circular hole that can allow jet and detonation products pass through, and external surface is streamline or broken line type rotary body.
Perhaps add one deck side direction and drive dividing plate in the acid material outside, side direction drives between the dividing plate outside and the preceding storehouse inwall the skim the air gap, its effect is that the HTHP product that allows perforator powder charge detonation produce is introduced into this sheaf space, this narrow space internal pressure is sharply raise, and then promotion side direction driving dividing plate inwardly moves, and side direction drives dividing plate this effect is passed to the acid material of the inside, makes it to accelerate to axe movement.
Can also add skim heatproof energetic material in the acid material outside in addition, and settle the thin side direction of one deck to drive the body dividing plate between acid material and energetic material.The effect of energetic material is to produce a lateral thrust, accelerates acid material to axe movement, sprays in last the past storehouse bottom circular aperture.
Energetic material can be heat resistant propellant, explosive, propellant and their mixture, and low-density is filled and added between Yu Qiancang and the inert divider.Dividing plate can be light metal plate such as aluminium sheet or other temperature-resistant material and makes.
Owing to adopted such scheme, the present invention has the completion system of perforation and two functions of acidification, can add acid material and realize by filling: after perforator detonates in conventional gun the place ahead, drive metal jet perforation in oil reservoir, because effluxvelocity is very high, (particularly near the acid material centre bore) just formed a low-pressure area around the approach that it is passed by; The detonation of explosive in the perforator in addition, detonation product expands rapidly, causes the completion system internal pressure sharply to raise, and the two acting in conjunction is extruded acid material in the past in the hole, storehouse, fill and add in the duct that jet is got.After acid material enters in the duct, under the effect of subsurface environment (HTHP) and well liquid, form (or generation) liquid acid, these acid and duct wall effect, the pollution layer and the compacted lift of perforation are progressively corroded, make the duct become thicker darker, permeability improves greatly, has made things convenient for the outflow of unvenile water in the oil reservoir.This greatly simplifies acidification technique, and cost saving can be avoided the infringement of useless acid to sleeve pipe and down-hole facility again, can realize like a cork in any rugged environment.
The present invention is described in detail below in conjunction with drawings and Examples.
Oil well perforation operation schematic diagram when Fig. 1 is oil exploration and oil recovery.
Fig. 2 is traditional acidification operation schematic diagram.
Fig. 3 is a common petroleum perforator perforation schematic diagram.
Fig. 4 is the completion system schematic diagram that the present invention has perforation and two kinds of functions of acidification.
Fig. 5 is the completion system schematic diagram that band side direction of the present invention drives.
Fig. 6 is the completion system schematic diagram that band side direction energetic material of the present invention drives.
Fig. 7 is the assembling schematic diagram that the present invention is used for completion practice.
Shown in Figure 1, when petroleum recovering, be to setting of casing behind the oil drilling 1, again reinforcing with cement layer 2 between sleeve pipe 1 and the stratum 3, then perforator 5 is packed in the perforating gun 4 into appropriate depth in the following insertion sleeve pipe 1.As shown in Figure 2, the perforator 5 that explosive 502 is housed is ignited in perforating gun 4, and between tube wall and oil reservoir perforation, the perforation process is as shown in Figure 3.Cavity liner 503 collapses under pressure, and forms metal jet, passes perforating gun 4 sleeve pipes 1 and cement layer 2 and is deep in the oil reservoir 3 always, gets duct 10.
Fig. 2 is traditional acidizing treatment schematic diagram.Will be during operation with packer 8 with sleeve closure, low-concentration liquid acid 11 will be full of in the well, suppress in well by acidifying car 9 then, liquid acid 11 enters in the duct of penetrating 10, direct and rock stratum 3 acts on, the compacted lift and the pollution layer of perforation are corroded, original duct 10 is constantly enlarged, the permeability in duct is greatly improved.
Fig. 4 is the embodiment of the invention one, it comprises perforator 5 and after effect part 6, be characterized in being equipped with the preceding storehouse 601 of acid material 602 and this material of splendid attire in perforator 5 the place aheads, both are the axial symmetry rotary body, and it is coaxial, circular hole is left at the center, supplies the detonation product of perforator 5 jets and powder charge 502 to pass through.Preceding storehouse 601 is axial symmetry rotary bodies, and inner surface is streamline or broken line type.Acid material 602 external forms also are the axial symmetry rotary bodies, and are coaxial with preceding storehouse 601.
Fig. 5 is the embodiment of the invention two, and its design feature is the middle part, the place ahead that acid material 602 places perforator 5, puts the thin side direction of a circle around the skin of acid material 602 and drives dividing plate 6031.It also is axisymmetric placement that side direction drives dividing plate 6031, and coaxial with preceding storehouse 601, acid material 602.It is the air-gap of one deck 0--5 millimeters thick that side direction drives dividing plate 6031 outsides, and air-gap is covered with preceding storehouse 601.After perforator 5 is ignited, shock wave is with inswept perforator 5 outer edges of the speed of 8000 meter per seconds, enter the air-gap between preceding storehouse 601 and the side direction driving dividing plate 6031, and have the fragment of part cavity liner 503 and a detonation product of powder charge 502, this space pressure that preceding storehouse 601 and side direction are driven between the dividing plate 6031 sharply raises, this pressure promotes side direction and drives dividing plate 6031 to axe movement, side direction drives dividing plate 6031 and again this motion is passed to acid material 602 simultaneously, acid material 602 is accelerated to axe movement, sprayed in the circular hole of last 601 bottoms, storehouse in the past.
Fig. 6 is the embodiment of the invention three, its design feature is that acid material 602 is placed middle part, perforator 5 the place aheads, add the thin side direction of one deck in the outside of acid material 602 and drive dividing plate 6032, the outside that drives dividing plate 6032 in side direction adds skim side direction driving energetic material 604, side direction drives dividing plate 6032 and side direction, and to drive energetic material 604 all be axisymmetric placement, and coaxial with preceding storehouse 601, acid material 602.Its effect is after perforator powder charge 502 is detonated, shock wave is propagated in powder charge 502 high speeds, very fast arrival perforator 5 and side direction drive the border of energetic material 604, and with the speed approaching side of 8000 meter per seconds to driving energetic material 604, carry the detonation product of part cavity liner 503 fragments and powder charge 502 simultaneously, make side direction drive energetic material 604 at this percussion down-firing.After the energetic material 604 igniting reactions, expand rapidly, produce immense pressure, promote acid material 602 to axe movement, the circular hole ejection of last 601 bottoms, storehouse in the past.
Fig. 7 is the assembling schematic diagram that the present invention is used for completion practice.Completion system 7 of the present invention is inserted in the perforating gun 4, perforating gun 4 is put into sleeve pipe 1 appropriate depth., and in well, suppress bobbin seal with packer 8, to guarantee that pressure in the pit shaft is greater than the pressure in the rock stratum 3 (if be exactly malleation originally, or can realize malleation with other method, then sealing and suppress operation can omit) with acidifying car 9.All are ready, ignite the perforator in the completion system 7, the beginning operation.
Claims (7)
1. completion system, comprise conventional gun 5 and after effect part 6, after effect part 6 is by preceding storehouse 601 and fill the acid material 602 that adds wherein and form, and it is characterized in that acid material 602 places the place ahead of perforator 5, and acid material 602 outsides are covered with preceding storehouse 601.
2. completion system according to claim 1 is characterized in that: a circular hole is stayed in 601 bottoms, preceding storehouse, and inner surface is streamline or broken line type, and make for metal material, powder metallurgy or other temperature-resistant material in preceding storehouse 601.
3. completion system according to claim 1 is characterized in that: acid material 602 is for generating the material of (or formation) liquid acid under the effect of subsurface environment and well liquid, for low-density is rotated symmetrical block structure, a circular hole is stayed at its center.External surface is streamline or broken line type rotary body.
4. a completion system comprises conventional gun 5 and after effect part 6, and after effect part 6 is by preceding storehouse 601 and fill the acid material 602 that adds wherein and forms, it is characterized in that in 601 inboards, preceding storehouse, puts side direction driving dividing plate 6031 between acid material 602 outsides.
5. completion system according to claim 4 is characterized in that: acid material 602 places middle part, perforator 5 the place aheads, and side direction drives dividing plate 6031 inner surfaces and pastes mutually with acid material 602 external surfaces, is streamline or broken line type; Side direction drives between dividing plate 6031 external surfaces and preceding storehouse 601 inner surfaces and leaves one deck air-gap; It is light metal plate such as aluminium sheet or other temperature-resistant material plate that side direction drives dividing plate 6031.
6. completion system, comprise perforator 5 and after effect part 6, after effect part 6 is by preceding storehouse 601 and fill the acid material 602 that adds wherein and forms, it is characterized in that adding one deck side direction and drive energetic material 604 and side direction driving dividing plate 6032 between 601 inboards, preceding storehouse and acid material 602 outsides; Side direction drives energetic material 604 outsides and is close to preceding storehouse 601 inwalls, and the inboard drives dividing plate 6032 outsides with side direction and pastes mutually, and it is acid materials 602 that side direction drives dividing plate 6032 inboards.
7. completion system according to claim 6, it is characterized in that: it can be heatproof gunpowder, explosive, propellant and their mixture that side direction drives energetic material 604, it is light metal plate such as aluminium sheet or other temperature-resistant material plate that side direction drives dividing plate 6032, and its inner surface is streamline or broken line type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95116524 CN1147054A (en) | 1995-10-04 | 1995-10-04 | Perforation and acidification processing device for oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95116524 CN1147054A (en) | 1995-10-04 | 1995-10-04 | Perforation and acidification processing device for oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1147054A true CN1147054A (en) | 1997-04-09 |
Family
ID=5080930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95116524 Pending CN1147054A (en) | 1995-10-04 | 1995-10-04 | Perforation and acidification processing device for oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1147054A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104066924A (en) * | 2012-01-18 | 2014-09-24 | 欧文石油工具有限合伙公司 | System and method for enhanced wellbore perforations |
| CN106567693A (en) * | 2016-10-20 | 2017-04-19 | 大庆红祥寓科技有限公司 | Inner and outer blind hole blockage relieving composite perforator |
| CN113302258A (en) * | 2019-01-16 | 2021-08-24 | 狩猎巨人公司 | Integrated coaxial perforation acidizing operation |
-
1995
- 1995-10-04 CN CN 95116524 patent/CN1147054A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104066924A (en) * | 2012-01-18 | 2014-09-24 | 欧文石油工具有限合伙公司 | System and method for enhanced wellbore perforations |
| CN106567693A (en) * | 2016-10-20 | 2017-04-19 | 大庆红祥寓科技有限公司 | Inner and outer blind hole blockage relieving composite perforator |
| CN113302258A (en) * | 2019-01-16 | 2021-08-24 | 狩猎巨人公司 | Integrated coaxial perforation acidizing operation |
| EP3911713A4 (en) * | 2019-01-16 | 2022-10-05 | Hunting Titan, Inc. | Integrated coaxial perforating acidizing operation |
| US11629585B2 (en) * | 2019-01-16 | 2023-04-18 | Hunting Titan, Inc. | Integrated coaxial perforating acidizing operation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |