CN103788935A - Semi-permeable packing particles for oil-gas well and preparation method of particles - Google Patents
Semi-permeable packing particles for oil-gas well and preparation method of particles Download PDFInfo
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- CN103788935A CN103788935A CN201210434176.9A CN201210434176A CN103788935A CN 103788935 A CN103788935 A CN 103788935A CN 201210434176 A CN201210434176 A CN 201210434176A CN 103788935 A CN103788935 A CN 103788935A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/40—Spacer compositions, e.g. compositions used to separate well-drilling from cementing masses
Abstract
The invention discloses semi-permeable packing particles for an oil-gas well and a preparation method of the particles. The semi-permeable packing particles are closed particles in any shape and a plurality of closed pores independent of each other are formed in the particles. The preparation method comprises the following steps: with a glass material as a raw material, foaming the glass material in a high-temperature environment to form the dispersed closed pores in the particles, adjusting the particle density by adjusting the porosity of the closed pores, and finally forming the closed particles in any shape, wherein the particle density is 0.4-1.6g/cm<3>, preferably 0.8-1.2g/cm<3>, and the particle size is 0.05-0.5mm, preferably 0.1-0.25mm. The semi-permeable packing particles are adjustable in particle size and density, resistant to high temperature, high in mechanical strength and good in chemical stability. The preparation method is simple and low in cost, and can be applied to various oil-gas wells in need of segmented flow control.
Description
Technical field
The present invention relates to a kind of Oil/gas Well and partly ooze packing particle and preparation method thereof, belong to oil and natural gas exploitation field.The Oil/gas Well here refers to the recovery well of broad sense in oil-gas field development, comprises oil well, gas well, gasser, Injection Well, heat extraction by steam injection well, steam-stimulated well, steam injection well, deep-well and ultra deep well etc.
Background technology
One, Oil/gas Well needs sectional flow control:
In same well, because the rate of permeation of ground interlayer is along axial widely different of production sections of oil and gas wells, differences in viscosity between profit is very large, this has just caused water to enter in advance pit shaft along the high stratum of rate of permeation, and be full of rapidly most of space of pit shaft, the water ratio of Oil/gas Well production fluid is significantly raise, and oil yield significantly declines.The production section of for example certain Oil/gas Well is 300 meters, 30 meters of the high production segment lengths of rate of permeation, ground interlayer rate of permeation differs 3 times, the viscosity ratio of the profit in stratum differs 100 times, when local water enters after pit shaft in advance along the high stratum of rate of permeation, the water ratio of the production fluid of this well can rise to rapidly more than 95%, when daily oil production is down to not water outlet 1/3 of daily oil production.The problems referred to above have been brought huge financial loss to field produces.
In order to address the above problem, Oil/gas Well needs sectional flow control technology.Sectional flow control technology is that Oil/gas Well is separated into several independently flow units, and each flow unit has flow control device to carry out controllable current limiting.Sectional flow control technology has slowed down the propelling of local water significantly, has improved oil offtake; Even after Oil/gas Well water outlet, sectional flow control technology also can effectively limit local water and sharply rise, and reduces daily oil production fall.The Oil/gas Well of hole condition as in the previous paragraph, after oil well water breakthrough, sectional flow control technology can be by production fluid moisture control below 60%, daily oil production more than 85% when daily oil production can reach not water outlet.
Equally, for gas-cap reservoir, gas input well and steam flooding well, because the differences in viscosity between oil gas is very large, very easily form gas coning in height infiltration section, produce above-mentioned similar problem.
Two, the sectional flow control mode of applying in current Oil/gas Well:
At present, in Oil/gas Well, the individual flow unit of sectional flow control is to rely on to be lowered to pkr realization, and current limliting is to rely on flow control filter pipe column; Utilize pkr that Oil/gas Well packing is become between multiple relatively independent production areas, in conjunction with the metering function of flow control strainer, realize the sectional flow control of Oil/gas Well.
Sectional flow control technology comprises two key elements: segmentation and flow control, both are indispensable.If be only lowered to flow control strainer in Oil/gas Well, do not use pkr to carry out segmentation, the local water that enters so in advance pit shaft can be along the axial channelling of pit shaft, local water can occupy rapidly the most spaces in pit shaft, still can make the water ratio of Oil/gas Well production fluid significantly increase, cause oil yield significantly to decline, the failure of final steady oil control water.
Three, the problem that sectional flow control utilization pkr segmentation at present exists:
The pkr often using is at present to meet liquid swell packers, meets liquid swell packers and cannot implement effective packing at following several hole conditions:
1, implemented the Oil/gas Well of well-cased perforating, in its cement mantle, existed and alter groove;
2, implemented the Oil/gas Well of sieve tube completion; Between screen casing and the borehole wall, there is similar axial flow channel of altering groove;
3, be lowered to the Oil/gas Well of perforated tube; Between perforated tube and the borehole wall, there is similar axial flow channel of altering groove;
4, down-hole string has distortion, enter well, but meeting liquid swell packers cannot be lowered to but its distortion does not affect flow control strainer.
In addition, use the Oil/gas Well of meeting liquid swell packers, due to frictional force huge between the pkr after expanding and the borehole wall, therefore meeting after liquid swell packers expands and down-hole string cannot extracted.
Four, partly ooze packing flow control technology:
Partly oozing packing flow control technology is to solve to use pkr to carry out a kind of potential technology (or in the technology of grinding) of the existing problem of sectional flow control.Carry out the existing problem of sectional flow control for above use pkr, applicant has carried out the long-term research of partly oozing packing flow control technology, to solve pkr in the problem existing aspect sectional flow control.
Partly oozing packing flow control technology is first in Oil/gas Well, to be lowered to flow control filter pipe column, (above-mentioned annular space is the annular space of broad sense between flow control filter pipe column and the borehole wall, annular space, it not only comprises the annular space between flow control filter pipe column and outer tubing string or the borehole wall, also comprise that cement mantle alters the annular space between annular space, perforated tube and the borehole wall between groove, screen casing and the borehole wall etc.), and then to pack grain medium in above-mentioned annular space, and filling consolidation forms and partly oozes excluder ring.Thisly partly ooze excluder ring to have axial flow resistance very large, and the very little characteristic of radial flow resistance does not affect production.Partly ooze excluder ring axial Oil/gas Well packing has been become between many relatively independent production areas, then in conjunction with the flow control effect of flow control strainer, just realized sectional flow control.Its well inner structure is shown in Fig. 1, Fig. 2.
Fig. 1 is that horizontal well application is partly oozed packing flow control technology and carried out sectional flow control schematic diagram.
Fig. 2 is that straight well application is partly oozed packing flow control technology and carried out sectional flow control schematic diagram.
In Fig. 1 and Fig. 2, comprise the borehole wall 1, outside the borehole wall, comprise high permeability formation district 10 and low permeability formation district 20.Flow control filter pipe column 2 is installed in the borehole wall, between the borehole wall and flow control filter pipe column, partly oozes excluder ring 3 for what formed by pore media; Partly oozing excluder ring top is sealed by hanging packer 4.
Five, partly ooze the problem that packing particle is found in process under study for action:
1, partly ooze excluder ring experiment early stage setting up, use quartz sand and haydite to carry out filling, in filling experimentation, find, because the metering function of flow control filter pipe column causes filling flow very little, and quartz sand and haydite density are too large, can not be taken a liquid and carry smoothly in mineshaft annulus and pile up consolidation, in filling bed, exist many places axially to alter the defect of groove and other form, cannot be formed effective earth's axis to excluder ring; Carried smoothly into well if will can take a liquid at particle under minimum velocity, this just require pellet density with take grain liquid-tight degree identical or close.Take density difference between a liquid and particle less, be just more conducive to filling, in the filling experiment that this point is done applicant, obtained checking.What oil field was used takes a liquid great majority take water as main, and density is at 1-1.1g/cm
3, applicant proposes pellet density and requires at 0.8-1.2 g/cm
3.
2, applicant is through experimental study for many years, and that has selected that two class density ratios approach above-mentioned standard partly oozes packing particle.
First kind particle is a kind of high molecular polymerization composition granule, and its density is adjustable, and granularity is adjustable, but temperature tolerance is poor, 120 ℃ of high-temperature resistants, and exceed the Oil/gas Well of 120 ℃ for well temperature, such as deep-well, ultra deep well, thermal recovery well and steam-stimulated well etc., this particle just cannot have been applied.And the applicant does not also find that density approaches 1g/cm so far
3, can high temperature resistantly exceed 120 ℃ and also acceptable organic polymer particulate material of cost.
Equations of The Second Kind be a kind of be known as float pearl inorganic particulate material, it is high temperature resistant, but also has following shortcoming:
1, floating pearl is coal self-assembling formation in the time of burning, its density range and size range distribute all very extensive, even the best pearl that floats produces source, can therefrom filter out granularity and density and meet that partly to ooze the pearl ratio of floating of packing technical requirements also very little simultaneously, less than 10%, this just causes its cost too high, cannot meet economic benefit requirement.
2, float integument and take a liquid and carry and carry out filling, in the time floating pearl by transferpump and oil gas pit shaft, float pearl and tube wall and the borehole wall and constantly clash into, cause floating pearl broken in a large number.Floating pearl is a kind of cenosphere of single bubble, float after pearl fragmentation, take a liquid and invade in a large number granule interior, floating pearl density increases considerably, becoming large with the density difference of taking a liquid, away from the required numerical value of filling process, therefore also there is not consolidation of filling in its density value, in filling bed, there is the defect of much axially altering groove and other form, cannot form and effectively partly ooze excluder ring.
Summary of the invention
The technical issues that need to address of the present invention are just to overcome the defect of prior art, provide a kind of Oil/gas Well partly to ooze packing particle and preparation method thereof, it is a kind of granularity and density is adjustable, high temperature resistant, physical strength is high, chemical stability is good partly oozes packing particle.
For addressing the above problem, the present invention adopts following technical scheme:
The invention provides a kind of Oil/gas Well and partly ooze packing particle, describedly partly ooze the sealing particle that packing particle is arbitrary shape, there are multiple separate sealed porositys in granule interior.
Described Oil/gas Well partly oozes real density and the equal capable of regulating of particle diameter of packing particle.
The described packing particle that partly oozes is glassiness material.
The described packing particle real density that partly oozes is adjusted by adjusting its wood interior porosity, and real density is 0.4-1.6 g/cm
3.
Preferably, the described packing particle real density that partly oozes is 0.8-1.2 g/cm
3.
The described packing flow control grain diameter that partly oozes can be by adjusting its degree of grinding and sieving and adjust its particle diameter, and the grain diameter after adjustment is 0.05-0.5mm.
Preferably, the grain diameter after adjustment is 0.1-0.25mm.
The present invention provides a kind of Oil/gas Well partly to ooze the preparation method of packing particle simultaneously, described method is take vitreous material as raw material, vitreous material is foamed under hot environment, form the dispersion sealed porosity of granule interior, and adjust pellet density by the porosity of adjusting sealed porosity, the final sealing particle that forms arbitrary shape, its density is 0.4-1.6 g/cm
3, particle diameter is 0.05-0.5mm.
Described vitreous material is the mineral of the natural glass matter that contains water.
Preferably, described vitreous material is perlite, vermiculite, obsidian or fluolite.
The inner contained moisture of the mineral of the natural glass matter that utilization contains water is as whipping agent, make vitreous material melting by increasing temperature, its inner water ebullition, gasification foaming, forms the pore sealing in granule interior, finally make its cooling curing, form suitable pellet density.
Vitreous material of the present invention can also be artificial glass powder, and foaming method is for adding artificial whipping agent.
Described particle exists part holes there is no totally enclosed situation, manually seals by any in following three kinds of modes:
1), applying surface coating;
2), surperficial vitreous, surperficial vitreous is to make the rapidly fusing of its surface by glassiness particle is heated, then sealing after all pores, then make its surface rapidly cooling curing realize;
3), apply hydrophobic coat, hydrophobic coat can make difficult immersion of water electrode partly ooze packing granule interior.
Adjustable, high temperature resistant in order to obtain a kind of granularity and density, physical strength is high, and what chemical stability was good partly oozes packing particle, the present invention proposes a kind of internal structure and manufacture method of the solid particulate materials that seals porous.
Glassiness particulate material is the one of above-mentioned solid particulate materials.
The internal structure of partly oozing packing particle and the performance thereof of the vitreous material of this sealing porous are as described below:
This particle is the particle that a kind of inside exists the vitreous material of multiple sealed porositys, and its profile has various ways, comprises various regular shapes or irregularly shaped.These are present in the sealed porosity of granule interior, can significantly reduce the real density of particle, and therefore the density of this particle can be adjusted by the porosity of adjusting pore, makes its density reach required density requirements.
When this particle is in the time being subject to clashing into, even if there is part holes destroyed, but because most of pore remains sealing, so this particle enters the liquid of granule interior after being clashed into little, its variable density is less.
The physical strength of this vitreous particulate material is high.
The temperature tolerance of this vitreous particulate material is high, and chemical stability is good.
What the present invention sealed porous partly oozes packing particle, and because its density is adjustable, granularity is adjustable, and therefore to obtain rate high for satisfactory particle.Its material is vitreous material, and therefore it is high temperature resistant, and physical strength is high, and chemical stability is good.Its cost is also very low in addition, therefore this particle can be applied to the various Oil/gas Wells that need to carry out sectional flow control, comprise oil well, gas well, gasser, Injection Well, heat extraction by steam injection well, steam-stimulated well, steam injection well, deep-well and ultra deep well, also comprise the Oil/gas Well that has been lowered to screen casing, exist cement mantle to alter the Oil/gas Well of the well-cased perforating of groove, be lowered to the Oil/gas Well of perforated tube and have the Oil/gas Well (the tubing string inside of distortion can be lowered to flow control filter pipe column) of tubing string distortion.
Accompanying drawing explanation
Fig. 1 is that horizontal well application is partly oozed packing flow control technology and carried out sectional flow control schematic diagram.
Fig. 2 is that straight well application is partly oozed packing flow control technology and carried out sectional flow control schematic diagram.
Fig. 3-1, Fig. 3-2 and Fig. 3-3 are difform porous sealing particle.
Fig. 4 is not for there is no totally enclosed porous particle.
Embodiment
embodiment 1
Take perlite as raw material, perlitic water content is 2% ~ 6.2%, and density is 2 ~ 2.4 g/cm
3perlite powder is broken into the particle that particle diameter is 0.05-0.25mm, be heated to 400 ℃-1400 ℃, high-temperature roasting, temperature is that 1200 ℃-1400 ℃, high-temperature roasting time are 0.1 second ~ 7 seconds, be chilled to below perlite softening temperature, make it form difform porous sealing particle, as shown in Fig. 3-1, Fig. 3-2 and Fig. 3-3.In figure, the outer wall of the sealing that 3-1 is particle, 3-2 is the pore of the separate sealing of granule interior.Pellet density is 0.8-1.2 g/cm
3, particle diameter is 0.1-0.25mm.
Add artificial whipping agent as raw material take artificial glass powder, vitreous material is foamed under hot environment, by control whipping agent amount generally 0.2-0.5%, control preheating temperature generally between 200-600 ℃, blowing temperature generally between 700 ℃ ~ 850 ℃ and warm up time general control between 5-30 minute, control foamed time adjusted between 5-40 minute, make it form difform porous sealing particle, as shown in Fig. 3-1, Fig. 3-2 and Fig. 3-3.In figure, the outer wall of the sealing that 3-1 is particle, 3-2 is the pore of the separate sealing of granule interior.Pellet density is 0.4-1.6 g/cm
3, preferred density is 0.8-1.2 g/cm
3, particle diameter is 0.1-0.25mm, preferable particle size is 0.1-0.25mm.。
As shown in Figure 4, in particle prepared by embodiment 1 and embodiment 2, some particle is sealing completely not, in Fig. 4, particle outer wall 4-1 does not form enclosed shape outer wall, mural margin exists broken pore 4-2 outside, is the pore 4-3 of the separate sealing of granule interior between broken pore and outer wall.
Manually seal by any in following three kinds of modes:
1), applying surface coating;
2), surperficial vitreous, surperficial vitreous is to make the rapidly fusing of its surface by vitreous material is heated, then sealing after all pores, then make its surface rapidly cooling curing realize;
3), apply hydrophobic coat, hydrophobic coat can make difficult immersion of water electrode partly ooze packing granule interior.
Finally it should be noted that: obviously, above-described embodiment is only for example of the present invention is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And the apparent variation of being amplified out thus or variation are still among protection scope of the present invention.
Claims (13)
1. Oil/gas Well partly oozes a packing particle, it is characterized in that: describedly partly ooze the sealing particle that packing particle is arbitrary shape, granule interior exists multiple separate sealed porositys.
2. Oil/gas Well as claimed in claim 1 partly oozes packing particle, it is characterized in that: described Oil/gas Well partly oozes real density and the equal capable of regulating of particle diameter of packing particle.
3. Oil/gas Well as claimed in claim 1 or 2 partly oozes packing particle, it is characterized in that: the described packing particle that partly oozes is glassiness material.
4. Oil/gas Well as claimed in claim 3 partly oozes packing particle, it is characterized in that: the described packing particle real density that partly oozes is adjusted by adjusting its wood interior porosity, and real density is 0.4-1.6 g/cm
3.
5. Oil/gas Well as claimed in claim 4 partly oozes packing particle, it is characterized in that: the described packing particle real density that partly oozes is 0.8-1.2 g/cm
3.
6. the Oil/gas Well as described in claim 4 or 5 partly oozes packing particle, it is characterized in that: the described packing flow control grain diameter that partly oozes can be by adjusting its degree of grinding and sieving and adjust its particle diameter, and the grain diameter after adjustment is 0.05-0.5mm.
7. Oil/gas Well as claimed in claim 6 partly oozes packing particle, it is characterized in that: the grain diameter after adjustment is 0.1-0.25mm.
8. the preparation method that Oil/gas Well partly oozes packing particle, it is characterized in that, described method is take vitreous material as raw material, vitreous material is foamed under hot environment, form the dispersion sealed porosity of granule interior, and adjust pellet density by the porosity of adjusting sealed porosity, and finally forming the sealing particle of arbitrary shape, its density is 0.4-1.6 g/cm
3, particle diameter is 0.05-0.5mm.
9. preparation method as claimed in claim 8, is characterized in that, described vitreous material is the mineral of the natural glass matter that contains water.
10. preparation method as claimed in claim 9, is characterized in that, described vitreous material is perlite, vermiculite, obsidian or fluolite.
11. preparation methods as described in claim 9 or 10, it is characterized in that, the inner contained moisture of the mineral of the natural glass matter that utilization contains water is as whipping agent, make vitreous material melting by increasing temperature, its inner water ebullition, gasification foaming, the pore that forms sealing in granule interior, finally makes its cooling curing, forms suitable pellet density.
12. preparation methods as claimed in claim 8, is characterized in that, described vitreous material is artificial glass powder, and foaming method is for adding artificial whipping agent.
13. preparation methods as described in claim 8-12 arbitrary, is characterized in that, described particle exists part holes there is no totally enclosed situation, manually seal by any in following three kinds of modes:
1), applying surface coating;
2), surperficial vitreous, surperficial vitreous is to make the rapidly fusing of its surface by glassiness particle is heated, then sealing after all pores, then make its surface rapidly cooling curing realize;
3), apply hydrophobic coat, hydrophobic coat can make difficult immersion of water electrode partly ooze packing granule interior.
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| CN201210434176.9A CN103788935A (en) | 2012-11-05 | 2012-11-05 | Semi-permeable packing particles for oil-gas well and preparation method of particles |
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| CN201210434176.9A CN103788935A (en) | 2012-11-05 | 2012-11-05 | Semi-permeable packing particles for oil-gas well and preparation method of particles |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109653707A (en) * | 2019-01-29 | 2019-04-19 | 安东柏林石油科技（北京）有限公司 | A kind of fractured reservoirs oil/gas well filling packer particle decreasing water cut and increasing oil method |
| CN115326651A (en) * | 2022-07-20 | 2022-11-11 | 中国地质大学（武汉） | Method for determining fracturing property of closed pore of shale |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653707A (en) * | 2019-01-29 | 2019-04-19 | 安东柏林石油科技（北京）有限公司 | A kind of fractured reservoirs oil/gas well filling packer particle decreasing water cut and increasing oil method |
| CN109653707B (en) * | 2019-01-29 | 2023-11-07 | 安东柏林石油科技（北京）有限公司 | Method for dewatering and increasing oil by filling packing body particles in oil and gas well of fractured oil and gas reservoir |
| US11898414B2 (en) | 2019-01-29 | 2024-02-13 | Anton Bailin Oilfield Technology (Beijing) Co., Ltd | Method for filling oil-gas well of fractured oil-gas reservoir with isolation particles to reduce water and increase oil production |
| CN115326651A (en) * | 2022-07-20 | 2022-11-11 | 中国地质大学（武汉） | Method for determining fracturing property of closed pore of shale |
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Application publication date: 20140514 |