CN201318155Y - High-effective current control sieve tube - Google Patents
High-effective current control sieve tube Download PDFInfo
- Publication number
- CN201318155Y CN201318155Y CNU2008201809333U CN200820180933U CN201318155Y CN 201318155 Y CN201318155 Y CN 201318155Y CN U2008201809333 U CNU2008201809333 U CN U2008201809333U CN 200820180933 U CN200820180933 U CN 200820180933U CN 201318155 Y CN201318155 Y CN 201318155Y
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- flow control
- parent tube
- screen pipe
- water
- duct
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- Expired - Lifetime
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000003082 abrasive agent Substances 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000001914 filtration Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 29
- 239000010779 crude oil Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 239000003129 oil well Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000010795 Steam Flooding Methods 0.000 description 3
- 230000001934 delay Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
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Abstract
The utility model discloses a high-effective current control sieve tube which comprises a base tube. A base tube inlet is arranged on the base tube, a filtering jacket is covered outside the base tube, and the circular gap between the base tube and the filtering jacket is a current diversion layer; a current control device is arranged on the sieve tube, the inlet of the current control device is communicated with the current diversion layer, and the outlet thereof is communicated with the inlet of the base tube. Under the condition of high oil-water viscosity ratio, by adopting the sieve tube, the water output is greatly reduced, but the oil output is slightly reduced. Before the oil-water interface reaches the sieve tube, the flow velocity of the fluid all over the production section is basically the same, therefore the sieve tube has the functions of controlling the uniform propelling of oil-water leading edge and postponing the time of water breakthrough.
Description
Technical field
The utility model relates to a kind of oilfield exploitation field screen casing, particularly a kind of high-efficiency flow control screen pipe.
Background technology
In the oil exploitation operation, the sand control that screen casing (claiming anti-sandpipe again) is used for oil well, gas well, horizontal well straight well and directional well filters.During mining operations, in the screen insertion oil well, an annular space is arranged between the screen casing and the borehole wall.Screen casing includes a parent tube, is evenly distributed with the inlet of through hole as parent tube on parent tube, and parent tube is set with outward and filters cover, and parent tube and the circumferential weld of crossing between the filter ruffle are the water conservancy diversion layer.
Most of reservoir development is by water oil to be driven toward oil well, crude oil is flowed to the well from oil deposit deep part, thereby adopt ground.
The viscosity major part of actual crude oil in oil reservoir is at the 5-300 centipoise, and the viscosity of water in oil reservoir is approximately less than 1 centipoise.Because the viscosity of water is far smaller than crude oil, there is very serious well water problem in the crude oil production.
As horizontal well 300 meters horizontal segments are arranged, think that horizontal segment is to produce section, the underground viscosity of crude oil is 100 centipoises, and water viscosity is 1 centipoise, and viscosity ratio of oil and water is 100.Suppose to have in 300 meters horizontal segments 30 rice huller screen pipes to contact with water, these 30 meters is water exit end just, because the existence of 30 meters water exit ends, the moisture content of oil well fluid just reaches 90%, is 300 as ratio of viscosities, and moisture content just reaches 95%.This shows because a large amount of water outlets that the high viscosity ratio of oil and water of oil reservoir causes have had a strong impact on the economic benefit in oil field.It is high moisture that control profit differences in viscosity causes is a most important aspect controlling water, particularly will control the inlet that water touches water behind the screen casing.
Equally, because the viscosity of gas and steam is far smaller than the viscosity of crude oil, gas drive oil and steam flooding crude oil extraction also exist gas and a large amount of outputs of steam and then seriously reduce oil production, the problem of reduction recovery ratio.
A kind of method of using flow control screen pipe to solve above problem is arranged at present, and flow control screen pipe is to increase flow control device on screen casing, and this method is to be lowered to flow control screen pipe and packer in well.Packer is independently several sections with the packing of the section of production, i.e. unit independently, and wherein the water of one section output can not scurried other unit by the annular space of the screen casing and the borehole wall.After the water exit end water outlet, because the viscosity of water is low, understand the flow of a lot of times of ground by the flow of stratum filtration greater than oil, when discharge increases, the flow control device flow resistance of flow control screen pipe can increase, and then limited the ascensional range of discharge to a certain extent, reduce the purpose of moisture content with acquiring a certain degree.
But existing flow control screen pipe or bad to the flow control effect of water, or reduced oily output widely, or the problem that fluidity can descend in time fast appears stopping up and controlling.Not satisfactory to the control water effect behind the water contact screen casing.
Also having a kind of water control method is at the parent tube inlet one or several nozzle parallel with one another to be installed, and fluid enters in the parent tube by nozzle.This method will improve flow resistance, has only by reducing the aperture of nozzle.But nozzle problem easy to wear can be brought in the aperture of reducing nozzle, and behind the nozzle wear, changes in flow rate is very big.Another problem that bring in the aperture of minimizing nozzle is the problem of spray nozzle clogging.In case after stopping up, screen casing is just not fuel-displaced, such problem is very serious.The production time of oil well requires to reach 2-20, so the wear-resisting anti-blocking requirement of screen casing nozzle is very high.
The utility model content
The utility model technical issues that need to address just are to overcome the defective of prior art, and a kind of high-efficiency flow control screen pipe is provided, and it can determine well that the high viscosity ratio of oil and water of the oil reservoir that exists in the prior art causes goes out water problems in a large number, satisfies the requirement of actual oil field.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of high-efficiency flow control screen pipe of the utility model, described screen casing includes a parent tube, and described parent tube is provided with the parent tube inlet, and parent tube is set with outward and filters cover, and parent tube and the circumferential weld of crossing between the filter ruffle are the water conservancy diversion layer; Described screen casing is provided with flow control device, and the inlet of described flow control device communicates with the water conservancy diversion layer, and the outlet of flow control device communicates with the parent tube inlet.
Described flow control device comprises control stream runner, and described control stream runner is in series by a plurality of flow units, and each flow unit is connected mutually by a little duct and a macropore and constituted, and the quantity of flow unit is more than 2-500 or 500.
The upstream and downstream of described control stream runner is provided with filter.Filter can prevent to control the obstruction of stream runner better.
The duct cross sectional shape in described macropore and little duct is irregular shape.
The duct cross sectional shape in described macropore and little duct is the shape of rule.
Described macropore and little duct all are the duct of column type.
The sectional area ratio in macropore and little duct is greater than 1.5 in the described flow unit; The aperture in little duct is 0.6-9mm; The ratio in the Kong Changyu aperture in little duct is less than 10; The ratio in the Kong Changyu aperture of macropore is greater than 0.3.
The pass in described little duct is straight hole, inclined hole or dislocation hole; Described inclined hole is that one 5-60 ° angle is arranged between aperture road axis and the macropore axis; Described dislocation hole is that two adjacent little ducts all are straight hole, and both duct axis are parallel to each other but not on same straight line.
Described control stream runner inner surface adopts diamond, carbide alloy, pottery or high-abrasive material.
Between described parent tube and the mistake filter ruffle supporter is arranged.
The described filter ruffle overcoat of crossing is equipped with outer jointing jacket.
During use, will cross filter ruffle two ends and external isolation by the screen casing end ring, fluid can only just can enter the water conservancy diversion layer by crossing filter ruffle.Because the water conservancy diversion layer communicates with the inlet of flow control device, the outlet of flow control device communicates with the parent tube inlet, thereby in the oil recovery manufacturing process, the route that fluid flows through was that filter ruffle, water conservancy diversion layer, flow control device inlet, flow control device, flow control device outlet, parent tube inlet enter parent tube successively.This is unique path, and in addition fluid does not have other paths to flow in the parent tube outside screen casing.
Control stream runner described in the utility model is for to be in series by a plurality of flow units, and each flow unit is connected mutually by a little duct and a macropore and constituted, and the quantity of flow unit is more than 2-500 or 500.Make fluid existence in the control stream runner of flow control device inside repeatedly quicken and slow down like this, accelerator transfers the pressure energy of fluid to kinetic energy, moderating process becomes heat energy with kinetic energy, consumed the energy of fluid, because kinetic energy has the characteristic that significantly increases when existing speed that by a small margin increase is arranged, and makes that like this its flow control effect is very good.And, because the viscosity of kinetic energy and fluid is irrelevant, so the crude oil that viscosity is higher than water far away is during by the utility model control stream runner, the flow resistance of crude oil is not higher than or only a little more than the flow resistance of water when the runner, so, the utility model flow control device is very little to the amplitude of the minimizing of the output of oil, can play the effect of the bigger variation of control flow so to a certain extent, reaches the purpose of control stream.
The control stream runner that a plurality of flow units of the utility model are in series is having very big advantage than one or more nozzles parallel with one another aspect the control flow.Under identical control stream ability, the minimum-value aperture of the flow unit of a plurality of series connection of the utility model is than big many in the minimum-value aperture of one or more nozzles parallel with one another, so just solved control stream runner problem easy to wear, avoid the decline of the ability that flows because of the control that the runner wearing and tearing cause, also solved the susceptible to plugging problem of runner simultaneously.
By the test shows on the combined test apparatus, under the bigger situation of viscosity ratio of oil and water, be lowered to the utility model screen casing, the aquifer yield fall is big, and oil production decline degree is very little.Flow velocity is basic identical everywhere along producing section for fluid before oil-water interfaces reach screen casing, and the even propelling of controlling the profit forward position, the effect that delays the water breakthrough time are arranged; Integrate the raising oil recovery rate, bring good economic benefits to the oil field.
High-efficiency flow control screen pipe described in the utility model also is applicable to the oil recovery condition of production that steam flooding, gas drive wet goods low viscosity medium drive heavy oil simultaneously.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is an erose control stream flow passage structure schematic diagram described in the utility model.
Fig. 3 is that macropore described in the utility model and little duct all are the control stream flow passage structure schematic diagram in the duct of column type.
Fig. 4 inclined hole control stream described in the utility model flow passage structure schematic diagram.
Fig. 5 is a dislocation described in the utility model hole control stream flow passage structure schematic diagram.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model embodiment is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of high-efficiency flow control screen pipe of the utility model, described screen casing include a parent tube 1, and described parent tube is provided with parent tube inlet 11, and parent tube is set with outward and filters cover 2, and parent tube and the circumferential weld of crossing between the filter ruffle are water conservancy diversion layer 3; Described screen casing is provided with flow control device 4, and the inlet 41 of described flow control device communicates with the water conservancy diversion layer, and the outlet 42 of flow control device communicates with the parent tube inlet.
As Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, described flow control device comprises control stream runner, described control stream runner is in series by a plurality of flow units, and each flow unit is made of an aperture road 44 and macropore 43 series connection, and the quantity of flow unit is more than 2-500 or 500.
The upstream and downstream of described control stream runner is provided with filter.Filter can prevent to control the obstruction of stream runner better.
As shown in Figure 2, the duct cross sectional shape in described macropore and little duct can be irregular shape.Perhaps as Fig. 3, Fig. 4 and shown in Figure 5, the duct cross sectional shape in described macropore and little duct is the shape of rule.As shown in Figure 3, described macropore and little duct all are the duct of column type.
The sectional area ratio in macropore and little duct is greater than 1.5 in the described flow unit; The aperture in little duct is 0.6-9mm; The ratio in the Kong Changyu aperture in little duct is less than 10; The ratio in the Kong Changyu aperture of macropore is greater than 0.3.
The pass in described little duct is straight hole, inclined hole or dislocation hole; As shown in Figure 3, described inclined hole is that one 5-60 ° angle is arranged between aperture road axis and the macropore axis; As shown in Figure 4, described dislocation hole is that two adjacent little ducts all are straight hole, and both duct axis are parallel to each other but not on same straight line.
Described control stream runner inner surface adopts diamond, carbide alloy, pottery or high-abrasive material.
As shown in Figure 1, between described parent tube and the mistake filter ruffle supporter 6 is arranged.In order to prevent that the water conservancy diversion layer between filter ruffle and the parent tube was narrowed down by external force, between parent tube and mistake filter ruffle, supporter is arranged.Supporter is a kind of to be alternate substantially parallel ribbon, makes the water conservancy diversion layer have the axial diversion effect, a kind of can be for point-like.
As shown in Figure 1, the described filter ruffle overcoat of crossing is equipped with outer jointing jacket 5.
During use, will cross filter ruffle two ends and external isolation by the screen casing end ring, fluid can only just can enter the water conservancy diversion layer by crossing filter ruffle.Because the water conservancy diversion layer communicates with the inlet of flow control device, the outlet of flow control device communicates with the parent tube inlet, thereby in the oil recovery manufacturing process, the route that fluid flows through was that filter ruffle, water conservancy diversion layer, flow control device inlet, flow control device, flow control device outlet, parent tube inlet enter parent tube successively.This is unique path, and in addition fluid does not have other paths to flow in the parent tube outside screen casing.
Control stream runner described in the utility model is for to be in series by a plurality of flow units, and each flow unit is connected mutually by a little duct and a macropore and constituted, and the quantity of flow unit is more than 2-500 or 500.Make fluid existence in the control stream runner of flow control device inside repeatedly quicken and slow down like this, accelerator transfers the pressure energy of fluid to kinetic energy, moderating process becomes heat energy with kinetic energy, consumed the energy of fluid, because kinetic energy has the characteristic that significantly increases when existing speed that by a small margin increase is arranged, and makes that like this its flow control effect is very good.And, because the viscosity of kinetic energy and fluid is irrelevant, so the crude oil that viscosity is higher than water far away is during by the utility model control stream runner, the flow resistance of crude oil is not higher than or only a little more than the flow resistance of water when the runner, so, the utility model flow control device is very little to the amplitude of the minimizing of the output of oil, can play the effect of the bigger variation of control flow so to a certain extent, reaches the purpose of control stream.
The control stream runner that a plurality of flow units of the utility model are in series is having very big advantage than one or more nozzles parallel with one another aspect the control flow.Under identical control stream ability, the minimum-value aperture of the flow unit of a plurality of series connection of the utility model is than big many in the minimum-value aperture of one or more nozzles parallel with one another, so just solved control stream runner problem easy to wear, avoid the decline of the ability that flows because of the control that the runner wearing and tearing cause, also solved the susceptible to plugging problem of runner simultaneously.
By the test shows on the combined test apparatus, under the bigger situation of viscosity ratio of oil and water, be lowered to the utility model screen casing, the aquifer yield fall is big, and oil production decline degree is very little.Flow velocity is basic identical everywhere along producing section for fluid before oil-water interfaces reach screen casing, and the even propelling of controlling the profit forward position, the effect that delays the water breakthrough time are arranged; Integrate the raising oil recovery rate, bring good economic benefits to the oil field.
High-efficiency flow control screen pipe described in the utility model also is applicable to the oil recovery condition of production that steam flooding, gas drive wet goods low viscosity medium drive heavy oil simultaneously.
Use of the present utility model is, set number, small aperture, macropore diameter and the pass of flow unit in the flow control device earlier according to the output of reservoir geology situation and initial stage operation, press the requirement of well casing post then, the utility model screen casing is placed well, and be furnished with packing devices such as packer, just can reach the effect of better control water.Can screen casing outer screen casing and the obstruction to a certain degree of the annular space between the borehole wall be about to the outer fluid-channeling channel of screen casing and stop up to a certain extent as a large amount of outputs of reservoir sand, just do not need artificial packing measure.Another kind of method with the annular space packing between the horizontal segment screen casing and the borehole wall is to be filled with solid particle in annular space.The flow resistance of solid particle can reach the purpose of the well anti-axial channelling of sealing, and at this moment the blind pipe of some is arranged on the screen casing tubing string.
The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1, a kind of high-efficiency flow control screen pipe, described screen casing includes a parent tube, and described parent tube is provided with the parent tube inlet, and parent tube is set with outward and filters cover, and parent tube and the circumferential weld of crossing between the filter ruffle are the water conservancy diversion layer; It is characterized in that: described screen casing is provided with flow control device, and the inlet of described flow control device communicates with the water conservancy diversion layer, and the outlet of flow control device communicates with the parent tube inlet.
2, high-efficiency flow control screen pipe as claimed in claim 1, it is characterized in that: described flow control device comprises control stream runner, described control stream runner is in series by a plurality of flow units, each flow unit is connected mutually by a little duct and a macropore and is constituted, and the quantity of flow unit is more than 2-500 or 500.
3, high-efficiency flow control screen pipe as claimed in claim 2 is characterized in that: the upstream and downstream of described control stream runner is provided with filter.
4, high-efficiency flow control screen pipe as claimed in claim 3 is characterized in that: described macropore and little duct all are the duct of column type.
5, as the arbitrary described high-efficiency flow control screen pipe of claim 2-4, it is characterized in that: the sectional area ratio in macropore and little duct is greater than 1.5 in the described flow unit; The aperture in little duct is 0.6-9mm; The ratio in the Kong Changyu aperture in little duct is less than 10; The ratio in the Kong Changyu aperture of macropore is greater than 0.3.
6, high-efficiency flow control screen pipe as claimed in claim 5 is characterized in that: the pass in described little duct is straight hole, inclined hole or dislocation hole; Described inclined hole is that one 5-60 ° angle is arranged between aperture road axis and the macropore axis; Described dislocation hole is that two adjacent little ducts all are straight hole, and both duct axis are parallel to each other but not on same straight line.
7, high-efficiency flow control screen pipe as claimed in claim 6 is characterized in that: described control stream runner inner surface adopts diamond, carbide alloy, pottery or high-abrasive material.
8, high-efficiency flow control screen pipe as claimed in claim 7 is characterized in that: between described parent tube and the mistake filter ruffle supporter is arranged.
9, high-efficiency flow control screen pipe as claimed in claim 8 is characterized in that: the described filter ruffle overcoat of crossing is equipped with outer jointing jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201809333U CN201318155Y (en) | 2008-12-10 | 2008-12-10 | High-effective current control sieve tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201809333U CN201318155Y (en) | 2008-12-10 | 2008-12-10 | High-effective current control sieve tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201318155Y true CN201318155Y (en) | 2009-09-30 |
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ID=41196921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201809333U Expired - Lifetime CN201318155Y (en) | 2008-12-10 | 2008-12-10 | High-effective current control sieve tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201318155Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011009290A1 (en) * | 2009-07-21 | 2011-01-27 | 安东石油技术（集团）有限公司 | Flow control screen tube for use in oil recovery process |
| CN101748999B (en) * | 2008-12-11 | 2012-09-05 | 安东石油技术（集团）有限公司 | Flow control sieve tube |
| CN104295272A (en) * | 2014-10-28 | 2015-01-21 | 中国石油集团西部钻探工程有限公司 | Oil Production Water Control Device |
-
2008
- 2008-12-10 CN CNU2008201809333U patent/CN201318155Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748999B (en) * | 2008-12-11 | 2012-09-05 | 安东石油技术（集团）有限公司 | Flow control sieve tube |
| WO2011009290A1 (en) * | 2009-07-21 | 2011-01-27 | 安东石油技术（集团）有限公司 | Flow control screen tube for use in oil recovery process |
| CN104295272A (en) * | 2014-10-28 | 2015-01-21 | 中国石油集团西部钻探工程有限公司 | Oil Production Water Control Device |
| CN104295272B (en) * | 2014-10-28 | 2016-11-02 | 中国石油集团西部钻探工程有限公司 | Oil Production Water Control Device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Haineng Haite Petroleum Science and Technology Development Co., Ltd., Beijing Assignor: Anton Oilfield Services (Group) Ltd. Contract record no.: 2011990000587 Denomination of utility model: Highly-efficient flow control sieve tube Granted publication date: 20090930 License type: Exclusive License Record date: 20110711 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20090930 Effective date of abandoning: 20081210 |