EP2458144A1 - Flusssteuerungssiebrohr zur verwendung in einem ölwiedergewinnungsverfahren - Google Patents
Flusssteuerungssiebrohr zur verwendung in einem ölwiedergewinnungsverfahren Download PDFInfo
- Publication number
- EP2458144A1 EP2458144A1 EP10801850A EP10801850A EP2458144A1 EP 2458144 A1 EP2458144 A1 EP 2458144A1 EP 10801850 A EP10801850 A EP 10801850A EP 10801850 A EP10801850 A EP 10801850A EP 2458144 A1 EP2458144 A1 EP 2458144A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow control
- slots
- filter pipe
- pipe
- fixed
- 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.)
- Granted
Links
- 238000011084 recovery Methods 0.000 title description 2
- 238000004891 communication Methods 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 33
- 230000015572 biosynthetic process Effects 0.000 claims description 12
- 238000010008 shearing Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 18
- 239000003921 oil Substances 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
-
- 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
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- 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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
Definitions
- the present invention relates to a flow control screen for use in oilfield exploitation.
- flow control screens are generally used for flow control, sand control or filtering of manually filled particles, etc. in an oil well, a gas well, a horizontal well, a vertical well and a directional well.
- a screen comprises a base pipe, a through-bore being formed on the base pipe as the inlet of the base pipe, a filter pipe being sleeved over the base pipe, and an annular gap between the base pipe and the filter pipe acting as a flow guide layer.
- a flow control screen provided with an axial seal for an oil field is an effective solution to the problem of huge water production caused by reasons like high oil water viscosity ratio in oil reservoir.
- an effective flow control screen has been provided, wherein a flow control device is arranged in the screen, the inlet of the flow control device being in communication with the flow guide layer, and the outlet of the flow control device being in communication with the inlet of the base pipe.
- the filter pipe is isolated from the exterior at both ends by the end rings of the screen, such that the fluid can enter the flow guide layer through the filter pipe only.
- the fluid sequentially passes through the filter pipe, the flow guide layer, the inlet of the flow control device, the flow control channel of the flow control device, the outlet of the flow control device, the inlet of the base pipe, and finally the base pipe in the oil production process.
- This is the only path, and except for it, there is no other path for the fluid to flow into the base pipe from outside of the screen.
- This type of flow control screens function to reduce the flow difference per meter to some extent, thereby achieving the purpose of flow control. It can solve the problem of huge water production caused by reasons like high oil water viscosity ratio in oil reservoir, and non-uniformity of the flow per meter along the well bore during the process of water injection, the process of chemical injection, and so on.
- the gap of the flow guide layers in the screen is very small, which is usually about 1 to 10mm, and however, the flowing length of the crude oil in the flow guide layer during oil recovery can be up to 4 to 9 meters and the flowing resistance of the crude oil in the flow guide layer is relatively greater. Whether the flow guide layer is unobstructed or not directly influences the oil production.
- the filter pipe has two forms: one is to evenly distribute the longitudinal ribs on the external surface of the base pipe, and then wrap wires externally around the base pipe to form the filter pipe, which requires a dedicated precise wrapping machine which is costly; the other is to use a metal mesh jacket as the filter pipe, wherein the metal mesh jacket is lined with an inner protection sleeve with a plurality of holes, and the metal mesh jacket and the inner protection sleeve are sleeved over the base pipe with longitudinal ribs.
- this method uses more materials.
- the speed of mounting ribs is slow, and the size of mounting ribs is not standard and has large errors, which results in a large error about the outer diameter of the base pipe with longitudinal ribs and increases difficulty in sleeving the filter pipe.
- An object of the present invention is to overcome at least one defect of a flow control screen in the prior art and to provide a flow control screen with fixed-supports on the inner wall of a filter pipe.
- a further object of the present invention is to make the flow control screen simply structured and cost-effective, greatly simplify the manufacturing process and facilitate control of the quality in machining, and the flow guide layer is not closed due to the increased pressure around the screen in the formation to be kept unobstructed, and the problem of huge water production caused by reasons like high oil water viscosity ratio in oil reservoir during oil exploitation can be solved, thereby meeting actual requirements in oil production.
- the present invention provides a flow control screen used in oilfield exploitation, comprising:
- the at least one fixed-support comprises a plurality of fixed-supports, and the plurality of fixed-supports are substantially uniformly distributed on the inner wall of the filter pipe (or on one side of the metal pipe). It shall be appreciated by those skilled in the art that since the filter pipe is made of the metal plate and the fixed-supports are usually not disposed adjacent to the boundary of the metal plate, there are no fixed-supports in proximity of the joint on the wall of the filter pipe after formation of the filter pipe using such a metal plate.
- each of the fixed-supports is a protruding part fixed to the inner wall of the filter pipe, and the height of each of the protruding parts is set to ensure that the flow guide layer is not closed under the external pressure around the screen in the formation.
- each of the fixed-supports is a protruding part inwardly punched on the wall of the filter pipe, and the punching depth of each of the protruding parts is greater than the thickness of the wall of the filter pipe so that the slots are formed in the form of sidewise-slots between portions of the periphery of the top surface of each of the protruding parts and the shearing planes of the unpunched portions of the wall of the filter pipe.
- the top surface of each of the fixed-supports is substantially in the shape of quadrangle. More preferably, the top surface of each of the fixed-supports is substantially in the shape of square or rectangle.
- the top surface of each of the fixed-supports is substantially in the shape of square or rectangle, and the slots are formed in the form of sidewise-slots between two opposite side edges of the top surface of each of the fixed-supports and the shearing planes of the unpunched portions of the wall of the metal pipe.
- each of the slots is configured to extend parallel to the longitudinal axis of the filter pipe, or each of the slots is configured to extend at an angle with respect to the longitudinal axis of the filter pipe, the angle being greater than 0 degree but not more than 90 degrees.
- the plurality of slots comprise a plurality of groups of slots, the distribution pattern of which is made such that the slots in each group are equidistantly distributed in the circumferential direction of the filter pipe, and the groups of slots are equidistantly distributed in the longitudinal direction of the filter pipe; or the slots in each group are equidistantly distributed in a spiral direction on the wall of the filter pipe, and the groups of the slots are equidistantly distributed in the circumferential direction of the filter pipe.
- the filter pipe is a metal pipe formed by welding a spirally wound elongated metal plate preformed with the fixed-supports.
- the flow control screen of the present invention is simple in manufacturing process and cost-effective, wherein the fixed-supports are disposed on the inner wall of the metal filter pipe which is provided with the slots, the fixed-supports can be formed by means of punching on the metal plate, or directly disposed on the metal plate by means such as welding or adhesion.
- the fixed-supports are arranged on a piece of elongated metal plate, and the filter pipe is formed by wrapping inwardly and spirally the face of the metal plate with the fixed-supports and then welding the resultant face into a cylinder. After the filter pipe is sleeved over the base pipe, the inwardly protruding fixed-supports function as longitudinal ribs in the flow guide layer between the filter pipe and the base pipe.
- the fixed-supports When the filter pipe is pressed under external pressure, the fixed-supports exert a supporting function such that the flow guide layer is not closed with the increased external pressure, thereby keeping the flow guide layer unobstructed.
- the slots are configured to meet the requirements on filtering precision of the screen. Since the filter pipe is made of the metal plate, such a filter pipe has a superb overall strength and anti-deformation capacity.
- the supporting function of the inwardly protruding fixed-supports makes the flow guide layer unobstructed, reduces the flow resistance of the crude oil in the flow guide layer, and is in favor of increase in oil production.
- the present invention is simply structured and cost-effective, greatly simplifies the manufacturing process and facilitates control of the quality in machining, which ensures a high-efficiency and low cost mass production.
- the flow control screen used in oilfield exploitation generally comprises: a base pipe 1 provided with a base pipe inlet 11 thereon; a filter pipe 2 sleeved over the base pipe 1 such that the annular gap between the base pipe 1 and the filter pipe 2 forms a flow guide layer 3 in which fluid is allowed to flow; and a flow control device 4 including an inlet 41 of the flow control device, a flow control channel 42 and an outlet 43 of the flow control device, the inlet 41 of the flow control device being in fluid communication with the flow guide layer 3, and the outlet 43 of the flow control device being in fluid communication with the base pipe inlet 11.
- the filter pipe 1 is configured as a metal pipe provided with a plurality of filter slots 22 on the wall thereof, the metal pipe is made of a metal plate, and at least one inwardly protruding fixed-support 21 is provided on the inner wall of the filter pipe 1 such that the flow guide layer 3 in communication with at least one portion of the plurality of slots 22 is not closed under external pressure around the screen in the formation.
- the flow guide layer is kept unobstructed.
- the at least one fixed-support 21 comprises a plurality of fixed-supports 21 which are substantially uniformly distributed on the inner wall of the filter pipe 2 or are substantially uniformly distributed on the metal plate (as stated above, it does not consider the influence of the boundary or the joint).
- each of the fixed-supports 21 is a protruding part fixed to the inner wall of the filter pipe 2, and the height of each of the protruding parts is set to ensure that the flow guide layer is not closed under the external pressure around the screen in the formation, preferably to keep the flow guide layer unobstructed.
- each of the fixed-supports 21 is a protruding part inwardly punched on the wall of the filter pipe 2, and the punching depth of each of the protruding parts is greater than the thickness of the wall of the filter pipe so that the slots 22 are formed in the form of sidewise-slots between portions of the periphery of the top surface of each of the protruding parts and the shearing planes of the unpunched portions of the wall of the filter pipe.
- each of the fixed-supports 21 is substantially in the shape of quadrangle, and more preferably, in the shape of square or rectangle.
- the fixed-supports with the top surfaces in other shape may be also possible.
- the top surface of each of the fixed-supports 21 is substantially in the shape of square or rectangle.
- the slots 22 are formed in the form of sidewise-slots between two opposite side edges of the top surface of each of the fixed-supports 21 and the shearing planes of the unpunched portions of the wall of the metal pipe.
- Each of the slots 22 is preferably configured to extend parallel to the longitudinal axis of the filter pipe 2, or alternatively, each of the slots 22 may also be configured to extend at an angle with respect to the longitudinal axis of the filter pipe, and the angle is greater than 0 degree but not more than 90 degrees.
- the inwardly protruding fixed-supports function as longitudinal ribs in the flow guide layer between the filter pipe and the base pipe.
- the fixed-supports exert a supporting function such that the flow guide layer is not closed with the increased external pressure, thereby keeping the flow guide layer unobstructed.
- the filter slots in the form of sidewise-slots are punched at uniform slot width, so as to meet the requirements on filtering precision of the screen.
- the filter pipe of the present invention is formed of the metal plate, the resultant filter pipe has a superb overall strength and anti-deformation capacity.
- the supporting function of the inwardly protruding fixed-supports makes the flow guide layer unobstructed, reduces the flow resistance of the crude oil in the flow guide layer, and is in favor of increase in oil production. Meanwhile, the flow control device can effectively solve the problem of huge water production caused by reasons like high oil water viscosity ratio in oil reservoir during the process of oil exploitation.
- the present invention has a simple structure, greatly simplifies the manufacturing process, facilitates control of the quality in machining and is cost-effective, which ensures a high-efficiency, low cost mass production.
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Filtration Of Liquid (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009201669489U CN201486537U (zh) | 2009-07-21 | 2009-07-21 | 一种内侧有固定支撑物的缝过滤套控流筛管 |
PCT/CN2010/001089 WO2011009290A1 (zh) | 2009-07-21 | 2010-07-20 | 一种在油田开采过程中使用的控流筛管 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2458144A1 true EP2458144A1 (de) | 2012-05-30 |
EP2458144A4 EP2458144A4 (de) | 2017-03-08 |
EP2458144B1 EP2458144B1 (de) | 2018-08-29 |
Family
ID=42425419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10801850.8A Active EP2458144B1 (de) | 2009-07-21 | 2010-07-20 | Flusssteuerungssiebrohr zur verwendung in einem ölwiedergewinnungsverfahren |
Country Status (6)
Country | Link |
---|---|
US (1) | US20120175104A1 (de) |
EP (1) | EP2458144B1 (de) |
CN (1) | CN201486537U (de) |
CA (1) | CA2768754A1 (de) |
RU (1) | RU2495997C1 (de) |
WO (1) | WO2011009290A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201486537U (zh) * | 2009-07-21 | 2010-05-26 | 安东石油技术(集团)有限公司 | 一种内侧有固定支撑物的缝过滤套控流筛管 |
CN103132957B (zh) * | 2011-11-25 | 2016-01-20 | 安东石油技术(集团)有限公司 | 可选择控流元件安装孔道入出口距的井下控流过滤器 |
US20140360718A1 (en) * | 2013-06-10 | 2014-12-11 | Anton Energy Services Corporation | Sand filter and method of manufacture |
CN104389562A (zh) * | 2014-11-06 | 2015-03-04 | 淄博东森石油技术发展有限公司 | 地龙滤砂筛管 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6006829A (en) * | 1996-06-12 | 1999-12-28 | Oiltools International B.V. | Filter for subterranean use |
US5823260A (en) * | 1996-09-24 | 1998-10-20 | Houston Well Screen Company | Well screen |
US5918672A (en) * | 1997-05-08 | 1999-07-06 | Mcconnell; Howard T. | Shroud for a well screen |
RU2140528C1 (ru) * | 1997-06-06 | 1999-10-27 | Акционерное общество "Татнефтегеофизика" | Дроссель |
US6942036B2 (en) * | 2002-04-09 | 2005-09-13 | Baker Hughes Incorporated | Treating apparatus and method for expandable screen system |
CN100453770C (zh) * | 2002-12-23 | 2009-01-21 | 北京海能海特石油科技发展有限公司 | 具有流量调控装置的筛管 |
RU59706U1 (ru) * | 2005-05-11 | 2006-12-27 | Закрытое акционерное общество Научно-производственное предприятие "Самарские Горизонты" | Скважинный фильтр |
US7413022B2 (en) * | 2005-06-01 | 2008-08-19 | Baker Hughes Incorporated | Expandable flow control device |
CN201031670Y (zh) * | 2007-04-20 | 2008-03-05 | 易会安 | 一种桥式缝隙筛管 |
US20080283238A1 (en) * | 2007-05-16 | 2008-11-20 | William Mark Richards | Apparatus for autonomously controlling the inflow of production fluids from a subterranean well |
US7775284B2 (en) * | 2007-09-28 | 2010-08-17 | Halliburton Energy Services, Inc. | Apparatus for adjustably controlling the inflow of production fluids from a subterranean well |
CN201318155Y (zh) * | 2008-12-10 | 2009-09-30 | 安东石油技术(集团)有限公司 | 一种高效控流筛管 |
CN101748999B (zh) * | 2008-12-11 | 2012-09-05 | 安东石油技术(集团)有限公司 | 一种控流筛管 |
CN101463719B (zh) * | 2009-01-21 | 2012-12-26 | 安东石油技术(集团)有限公司 | 一种高效控流筛管的控流装置 |
CN201486537U (zh) * | 2009-07-21 | 2010-05-26 | 安东石油技术(集团)有限公司 | 一种内侧有固定支撑物的缝过滤套控流筛管 |
-
2009
- 2009-07-21 CN CN2009201669489U patent/CN201486537U/zh not_active Expired - Lifetime
-
2010
- 2010-07-20 RU RU2012105982/03A patent/RU2495997C1/ru active
- 2010-07-20 EP EP10801850.8A patent/EP2458144B1/de active Active
- 2010-07-20 CA CA2768754A patent/CA2768754A1/en not_active Abandoned
- 2010-07-20 WO PCT/CN2010/001089 patent/WO2011009290A1/zh active Application Filing
- 2010-07-20 US US13/384,674 patent/US20120175104A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2011009290A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2768754A1 (en) | 2011-01-27 |
EP2458144B1 (de) | 2018-08-29 |
US20120175104A1 (en) | 2012-07-12 |
EP2458144A4 (de) | 2017-03-08 |
CN201486537U (zh) | 2010-05-26 |
RU2495997C1 (ru) | 2013-10-20 |
RU2012105982A (ru) | 2013-08-27 |
WO2011009290A1 (zh) | 2011-01-27 |
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