CN107780897A - Horizontal completion heavy crude heat extraction screen casing - Google Patents
Horizontal completion heavy crude heat extraction screen casing Download PDFInfo
- Publication number
- CN107780897A CN107780897A CN201610722523.6A CN201610722523A CN107780897A CN 107780897 A CN107780897 A CN 107780897A CN 201610722523 A CN201610722523 A CN 201610722523A CN 107780897 A CN107780897 A CN 107780897A
- Authority
- CN
- China
- Prior art keywords
- base tube
- wrapping wire
- screen casing
- heat extraction
- horizontal completion
- 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.)
- Withdrawn
Links
- 238000000605 extraction Methods 0.000 title claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229910052742 iron Inorganic materials 0.000 claims abstract description 26
- 239000000446 fuel Substances 0.000 claims abstract description 9
- 230000002787 reinforcement Effects 0.000 claims description 10
- 239000012530 fluid Substances 0.000 abstract description 7
- 238000005086 pumping Methods 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 24
- 235000019198 oils Nutrition 0.000 description 24
- 239000010779 crude oil Substances 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000011084 recovery Methods 0.000 description 11
- 239000007790 solid phase Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 7
- 238000010795 Steam Flooding Methods 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 238000010793 Steam injection (oil industry) Methods 0.000 description 4
- 239000010426 asphalt Substances 0.000 description 4
- 235000000396 iron Nutrition 0.000 description 4
- 230000001788 irregular Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005325 percolation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 235000019476 oil-water mixture Nutrition 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009969 flowable effect Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- -1 gravel in profit Substances 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses horizontal completion heavy crude heat extraction screen casing, base tube including being provided with multiple fuel feed holes on outer wall, multiple ribs are axially provided with its outer circle wall along the base tube, and along base tube circle on multiple ribs interval be wound with wrapping wire, be filled between adjacent two ribs in the block foamed iron of triangle.During present invention work, base tube is placed in the horizontal segment of horizontal completion, and viscous crude is entered by wire spacing in the gap that wrapping wire is formed with sleeve pipe, after the filtration by foamed iron, substrate tube is entered by fuel feed hole, to realize the pumping of fluid.
Description
Technical field
The present invention relates to field of petroleum exploitation, in particular to horizontal completion heavy crude heat extraction screen casing.
Background technology
Petroleum resources are present among the oil reservoir naturally occurred, its production technique is with Oil Reservoir Types, primary characteristic is different and
It is different.Viscous crude, also referred to as heavy oil are high viscosity heavy crude, refer to the weight that viscosity is high, density is big, resin and asphalt content is higher
Matter crude oil, i.e. high viscosity heavy crude, general paraffin content is less, thus viscosity of crude is higher, and flow resistance is larger, exploits difficulty
Greatly.
Viscous crude is the important component in the petroleum hydrocarbon energy, and its feature is as follows：
（1）Colloid in viscous crude is high with bitumen content, and light fraction is seldom.And as resin and asphalt content increases viscous crude
Relative density and viscosity also accordingly increase.
（2）The viscosity of viscous crude is for very temperature sensitive, and with the increase of temperature, viscosity drastically declines.And viscosity of crude is bigger,
This change is more obvious.
（3）The hetero atom such as sulphur, oxygen, nitrogen is more in viscous crude.
（4）Paraffin content is typically relatively low in viscous crude, but it is " double high oil fields ", i.e. asphalt content also to have only a few oil field
Height, paraffin content are also high, are characterized as the high condensation point crude oil of high viscosity.
（5）Same heavy crude reservoir, oil property usually have very in the different well sections and plane of vertical oil reservoir between each well
Big difference.
The heavy oil reserves in China are enriched, and viscous crude annual production accounts for the 10% of crude oil total output, according to Chinese Second National resource
Evaluation data, viscous crude stock number there are about 8198.710t.But under formation temperature conditions, the viscosity of viscous crude is too high, it is difficult to flow,
Oil production method with routine is difficult extraction.Because viscosity is larger, its recovery method is different from the recovery method of ordinary crude oils,
This is determined by the characteristics of viscous crude.The viscosity of viscous crude is too high, and the mobility ratio of water is too high, uses the oil extraction method of routine
It is very little to carry out heavy crude producing effect.
At present, the method that each elephant in China improves thick oil recovery ratio is mainly that steam soak and steam drive, but is entered
Up to 60%, the viscous crude for having nearly 40% does not have its recovery percent of reserves after multi-round is handled up and driven with steam after row steam soak and steam drive
It is plucked out of.Heavy crude reservoir is after steam drive is implemented, and reservoir temperature, pressure are there occurs significant changes, remaining oil saturation between hole
Remaining oil distribution also changes therewith between degree, well.But shallower, reservoir loose cementation so that horizontal well exists is being buried due to oil reservoir
Easily occur set damage, screen damage, packer damage during exploitation or shake out phenomenon, have a strong impact on the development effectiveness of horizontal well.
The content of the invention
It is an object of the invention to provide horizontal completion heavy crude heat extraction screen casing, while facilitating viscous crude Fast Algorithm for Mining, keep away
Exempt from the blocking and damage of screen casing.
The purpose of the present invention is achieved through the following technical solutions：
Horizontal completion heavy crude heat extraction screen casing, including the base tube of multiple fuel feed holes is provided with outer wall, along the base tube axially at it
Be provided with multiple ribs on outer circle wall, and along base tube circle on multiple ribs interval be wound with wrapping wire, it is adjacent
Two ribs between be filled with the block foamed iron of triangle.During present invention work, base tube is placed in the level of horizontal completion
Section, viscous crude is entered by wire spacing in the gap that wrapping wire is formed with sleeve pipe, after the filtration by foamed iron, is passed through
Fuel feed hole enters substrate tube, to realize the pumping of fluid；
In the prior art, steam flooding technology is used when being exploited to viscous crude, i.e., steam injection well and production are set above oil reservoir
Well, constantly pass through steam in steam injection well so that steam constantly heats the stratum around pit shaft, while the crude oil in stratum also by
Heating, the steam zone progressively extended with the continuous injection of steam is formed in the stratum of near wellbore, steam can be by steam zone
In drop to relatively low degree containing saturation degree, and by flowable crude oil（That is the difference of initial oil saturation and residual oil saturation
Value）Displace steam zone；At the same time, in the horizontal segment of horizontal completion, steam consumingly moves to updip direction, and in gravity
Under driving, heated crude oil is driven onto and had a down dip reversely, and the increase of the temperature with crude oil, profit in horizontal completion horizontal segment with
And the mixture such as gravel will seethe with excitement, and cause crude oil to be degraded（Disturbance caused by the boiling of mixture）, profit and solid phase
Mixture start by entering substrate tube in horizontal completion horizontal segment, wrapping wire is a complete metal bar and passes through interval
It is wound on multiple ribs, forms the primary filter unit to the major diameter solid phase such as gravel in profit, and foam iron rule is formed
To the secondary filter unit of minor diameter solid phase, to realize the sand control purpose of base tube；Also, when in horizontal completion horizontal segment by
When fluid pressure and the self-contained heat of profit influence and cause to produce pressure change, between adjacent two ribs
The secondary filter section of formation is compressed, but multiple foamed irons block in triangle are filled with the secondary filter section,
Foamed iron can still form the runner of multiple irregular geometric figures with fuel feeding after stress deforms upon in secondary filter section
Aqueous mixtures are by the way that and foamed iron inner duct stress occurs minor variations and being not easy and is blocked dead, while foamed iron has one
Fixed elasticity, the duct in elasticity recovery deformation in foamed iron resets, and to maintain the percolation ability in secondary filter section, protects
Demonstrate,prove the smooth exploitation of viscous crude.
Also include multiple reinforcements, multiple reinforcements axially and are distributed on wrapping wire in a ring along the base tube.
In the horizontal segment of horizontal completion, wrapping wire is not only by the pressure of oil reservoir, and pressure moment change with the change of reservoir temperature,
I.e. during the abrupt change of pressure, wrapping wire is highly prone to damage, and the present invention by set on wrapping wire it is multiple in a ring
The reinforcement of distribution so that the first filter element that wrapping wire is formed stably is supported, to tackle in horizontal completion in horizontal segment
Continually changing production pressure, while extend the service life of its own.
TiALN-WC/C layers are scribbled on the wrapping wire outer wall.Preferably, TiALN-WC/C is set to apply in wrapping wire outer wall
Layer, and the coefficient of friction of TiALN-WC/C coatings only has 0.1, when the solid phases such as sand grains constantly contact with wrapping wire, can greatly drop
Low frictional dissipation between the two, and self lubricity is carried, greatly ensure service life of the wrapping wire in horizontal completion.
Also include connector, the both ends of the base tube are connected by connector with blind pipe respectively.Preferably, according to reality
The needs of oil recovery, base tube is connected by connector with blind pipe, facilitates the pumping of crude oil, and the abandoning tradition blind pipe in laying
The mode directly welded with base tube, wrapping wire is directly changed when wrapping wire damages and without being carried out integrally to base tube, wrapping wire to facilitate
Change, reduce the production cost of thickened oil recovery.
The present invention compared with prior art, has the following advantages and advantages：
1st, the present invention is led when being influenceed in horizontal completion horizontal segment by fluid pressure and the self-contained heat of profit
When causing production pressure change, the secondary filter section formed between adjacent two ribs is compressed, but in the secondary mistake
Filter filled with multiple foamed irons block in triangle in section, foamed iron is after stress deforms upon, in secondary filter section
Can still be formed the runners of multiple irregular geometric figures for oil water mixture by, and foamed iron inner duct stress occur it is micro-
Small change and be not easy to be blocked dead, while foamed iron has certain elasticity, the duct in elasticity recovery deformation in foamed iron
Reset, to maintain the percolation ability in secondary filter section, ensure the smooth exploitation of viscous crude；
2nd, the present invention is led when being influenceed in horizontal completion horizontal segment by fluid pressure and the self-contained heat of profit
When causing production pressure change, the secondary filter section formed between adjacent two ribs is compressed, but in the secondary mistake
Filter filled with multiple foamed irons block in triangle in section, foamed iron is after stress deforms upon, in secondary filter section
Can still be formed the runners of multiple irregular geometric figures for oil water mixture by, and foamed iron inner duct stress occur it is micro-
Small change and be not easy to be blocked dead, while foamed iron has certain elasticity, the duct in elasticity recovery deformation in foamed iron
Reset, to maintain the percolation ability in secondary filter section, ensure the smooth exploitation of viscous crude；
3rd, the present invention sets TiALN-WC/C coatings in wrapping wire outer wall, and the coefficient of friction of TiALN-WC/C coatings only has 0.1,
When the solid phases such as sand grains constantly contact with wrapping wire, frictional dissipation between the two can be greatly reduced, and carries self lubricity, greatly
Ground ensures service life of the wrapping wire in horizontal completion.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the longitdinal cross-section diagram of the present invention.
Mark and corresponding parts title in accompanying drawing：
1- reinforcements, 2- wrapping wires, 3- ribs, 4- base tubes, 5- fuel feed holes, 6- connectors, 7- blind pipes, 8- foamed irons.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As shown in Figure 1 to Figure 2, the present embodiment includes the base tube 4 that multiple fuel feed holes 5 are provided with outer wall, axially exists along the base tube 4
Be provided with multiple ribs 3 on its outer circle wall, and along base tube 4 justify on multiple ribs 3 interval be wound with wrapping wire
2, it is filled between adjacent two ribs 3 in the block foamed iron 8 of triangle.During present invention work, base tube 4 is placed in horizontal complete
The horizontal segment of well, viscous crude are entered by the gap of wrapping wire 2 in the gap that wrapping wire 2 is formed with sleeve pipe, in the filtering by foamed iron 8
After effect, entered by fuel feed hole 5 inside base tube 4, to realize the pumping of fluid；
In the prior art, steam flooding technology is used when being exploited to viscous crude, i.e., steam injection well and production are set above oil reservoir
Well, constantly pass through steam in steam injection well so that steam constantly heats the stratum around pit shaft, while the crude oil in stratum also by
Heating, the steam zone progressively extended with the continuous injection of steam is formed in the stratum of near wellbore, steam can be by steam zone
In drop to relatively low degree containing saturation degree, and by flowable crude oil（That is the difference of initial oil saturation and residual oil saturation
Value）Displace steam zone；At the same time, in the horizontal segment of horizontal completion, steam consumingly moves to updip direction, and in gravity
Under driving, heated crude oil is driven onto and had a down dip reversely, and the increase of the temperature with crude oil, profit in horizontal completion horizontal segment with
And the mixture such as gravel will seethe with excitement, and cause crude oil to be degraded（Disturbance caused by the boiling of mixture）, profit and solid phase
Mixture start by being entered in horizontal completion horizontal segment inside base tube 4, wrapping wire 2 be a complete metal bar and by
Every being wound on multiple ribs 3, the primary filter unit to the major diameter solid phase such as gravel in profit is formed, and foamed iron 8 is then
The secondary filter unit to minor diameter solid phase is formed, to realize the sand control purpose of base tube 4；Also, when horizontal completion horizontal segment
It is interior by fluid pressure and the self-contained heat of profit influenceed and cause produce pressure change when, adjacent two reinforcement
The secondary filter section formed between rib 3 is compressed, but it is in that triangle is block to be filled with the secondary filter section multiple
Foamed iron 8, foamed iron 8 can still form multiple irregular geometric figures after stress deforms upon in secondary filter section
Runner is so that oil water mixture is by simultaneously and the inner duct stress of foamed iron 8 occurs minor variations and being not easy and is blocked dead, steeps
Foam iron 8 has certain elasticity, and the duct in elasticity recovery deformation in foamed iron 8 resets, to maintain in secondary filter section
Percolation ability, ensure the smooth exploitation of viscous crude.
The present embodiment also includes multiple reinforcements 1, and multiple reinforcements 1 are distributed axially and in a ring along the base tube 4
On wrapping wire 2.In the horizontal segment of horizontal completion, wrapping wire 2 is not only by the pressure of oil reservoir, and the pressure is with the change of reservoir temperature
Change and moment change, i.e., during the abrupt change of pressure, wrapping wire 2 is highly prone to damage, and the present invention is by wrapping wire 2
Multiple reinforcements 1 being distributed in a ring are set so that the first filter element that wrapping wire 2 is formed stably is supported, to tackle water
Continually changing production pressure in horizontal segment in flat completion, while extend the service life of its own.
Preferably, TiALN-WC/C coatings are set in the outer wall of wrapping wire 2, and the coefficient of friction of TiALN-WC/C coatings only has
0.1, when the solid phases such as sand grains constantly contact with wrapping wire 2, frictional dissipation between the two can be greatly reduced, and carry self-lubricating
Property, greatly ensure service life of the wrapping wire 2 in horizontal completion.
Preferably, according to the needs actually to recover the oil, base tube 4 is connected by connector 6 with blind pipe 7, facilitates crude oil
Pumping, and the mode that abandoning tradition blind pipe 7 directly welds with base tube 4 in laying, to facilitate when wrapping wire 2 damages directly more
Wrapping wire 2 is changed without carrying out integral replacing to base tube 4, wrapping wire 2, reduces the production cost of thickened oil recovery.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (4)
1. horizontal completion heavy crude heat extraction screen casing, including multiple fuel feed holes are provided with outer wall（5）Base tube（4）, it is characterised in that：
Along the base tube（4）Multiple ribs are axially provided with its outer circle wall（3）, and along base tube（4）Circle is to multiple described
Ribs（3）Upper interval is wound with wrapping wire（2）, adjacent two ribs（3）Between be filled with the block foamed iron of triangle
（8）.
2. horizontal completion heavy crude heat extraction screen casing according to claim 1, it is characterised in that：Also include multiple reinforcements
（1）, multiple reinforcements（1）Along the base tube（4）It is distributed in axially and in a ring wrapping wire（2）On.
3. horizontal completion heavy crude heat extraction screen casing according to claim 1, it is characterised in that：In the wrapping wire（2）Outer wall
On scribble TiALN-WC/C layers.
4. horizontal completion heavy crude heat extraction screen casing according to claim 1, it is characterised in that：Also include connector（6）, institute
State base tube（4）Both ends pass through connector respectively（6）With blind pipe（7）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610722523.6A CN107780897A (en) | 2016-08-25 | 2016-08-25 | Horizontal completion heavy crude heat extraction screen casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610722523.6A CN107780897A (en) | 2016-08-25 | 2016-08-25 | Horizontal completion heavy crude heat extraction screen casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107780897A true CN107780897A (en) | 2018-03-09 |
Family
ID=61392785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610722523.6A Withdrawn CN107780897A (en) | 2016-08-25 | 2016-08-25 | Horizontal completion heavy crude heat extraction screen casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107780897A (en) |
-
2016
- 2016-08-25 CN CN201610722523.6A patent/CN107780897A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180309 |