AU717503B2 - Expandable well screen - Google Patents
Expandable well screen Download PDFInfo
- Publication number
- AU717503B2 AU717503B2 AU76517/98A AU7651798A AU717503B2 AU 717503 B2 AU717503 B2 AU 717503B2 AU 76517/98 A AU76517/98 A AU 76517/98A AU 7651798 A AU7651798 A AU 7651798A AU 717503 B2 AU717503 B2 AU 717503B2
- Authority
- AU
- Australia
- Prior art keywords
- carrier tube
- slots
- well screen
- strip
- filter sheets
- 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.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
- E21B43/108—Expandable screens or perforated liners
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
Description
WO 98/49423 PCT/EP98/02577 EXPANDABLE WELL SCREEN The invention relates to an expandable well screen for preventing migration of solid particles into a hydrocarbon fluid production well.
More particularly, the invention relates to an expandable well screen which comprises a number of filter sheets which are secured in an iris-shaped configuration and co-axial to an expandable slotted carrier tube such that as a result of expansion of the tube the amount of overlap between adjacent filter sheets is reduced.
Such an expandable well screen is disclosed in applicant's co-pending international patent application PCT/EP96/04887.
Figure 3 of this prior art reference discloses that the filter sheets consist of plates in which a series of circular perforations are present. The size of these perforations is chosen such that solid particles larger than the size of the hole are prevented from flowing into the well.
A suitable expandable slotted carrier tube for use with the screen is disclosed in international patent application PCT/EP93/01460.
It has been found that filter sheets which are secured to an expandable slotted carrier tube are deformed considerably during the process of expanding the carrier tube by moving an expansion mandrel therethrough.
The carrier tube normally shortens during the expansion process as a result of opening of the axial slots towards a diamond shape.
This may cause the filter sheets to buckle to accommodate the carrier tube shortening and friction WO 98/49423 PCTIEP98/02577 2 between the overlapping filter sheets and the carrier tube or tubes may cause the filter sheets to tear.
An object of the present invention is to provide a well screen comprising an iris-shaped configuration of filter sheets which do not buckle and which slide easily relative to each other and relative to the carrier tube during the process of expanding the carrier tube.
The well screen according to the invention thereto comprises filter sheets having slots which are oriented in a substantially circumferential orientation with respect to the carrier tube.
When used in this specification the reference to a circumferential arrangement of slots means that the slots each are directed in a substantially tangential orientation with respect to the carrier tube and such the slots are oriented substantially transversal to the central axis and any axial slots of the carrier tube.
Preferably the filter sheets consist of elongate strips with staggered rows of slots in a transversal direction with respect to a longitudinal axis of each strip.
The pattern of slots is preferably such that alternate rows are displaced up to half a slot pitch in the transverse direction, the length of the slots is greater than half the transverse slot pitch, and the pattern of slots is continued through the longitudinal edges of the strips.
It is also preferred that each strip is secured at regularly spaced points along its length to the expandable slotted carrier tube and that each strip is secured to the expandable slotted carrier tube at said points by either spot welding, brazing, soldering, gluing, riveting or screwing the strip to the tube at each of said points.
WO 98/49423 PCT/EP98/02577 3 These and further aspects, features and advantages ofthe well screen according to the present invention will become apparent from the accompanying claims, abstract and the following detail-ed description with reference to the drawings.
In the drawings: Fig. 1 is a cross-sectional view of a well-screen comprising an iris-shaped configuration of filter sheets according to the invention; Fig. 2 is a longitudinal sectional view of the well screen of Fig. 1; Fig. 3 is a side view of the well screen of Fig. 1 and 2 in which the protective surrounding tube has been omitted; and Fig. 4 and Fig. 4A, B, C and D show the original shape and deformation of the circumferential slots near a longitudinal edge of the filter sheets before, during and after the expansion process.
Referring now to Fig. 1 there is shown an expandable slotted carrier tube 1 which is surrounded by a well screen 2 which comprises a series of filter sheets 3 which are arranged in an iris-shaped configuration around the carrier tube 1. As shown in Fig. 2 and 3 the filter sheets 3 consist of elongate rectangular strips which are each, as shown in Fig. 1 secured to the carrier tube 1 at attachment points 4 located on or close to the longitudinal centreline of the filter sheet 3 by for example spot welding, brazing, soldering, gluing, riveting or screwing at regularly spaced points along the length of the carrier tube i. The attachment points are located on the nodes between the ends of the slots of the carrier tube i.
The filter sheets 3 overlap each other in both axial and circumferential direction such that during and after the expansion process which is illustrated in Fig. 4 at WO 98/49423 PCT/EP98/02577 4 least some overlap remains between adjacent filter sheets 3.
In Fig. 3 the protective surrounding tube 5 which is shown in Figs. 1 and 2 has been omitted to show that the filter sheets 3 each comprise a series of staggered rows of circumferential slots 6 which are oriented in a substantially tangential direction with respect to the carrier tube 1 and substantially transversal to the axial slots 7 of the carrier tube 1 and to the central axis 8 of the carrier tube i.
As shown in Fig. 4 the carrier tube 1 is expanded by an expansion cone 9 during the expansion process such that the axial slots 7 deform into a diamond shape.
The expansion causes the carrier tube 1 to shorten and as illustrated in Figs. 4A-D the circumferential slots 6 at and near the longitudinal edges of the filter sheets 3 will initially open up to the diamond shape shown in Fig. 4B, then close to the X-shape shown in Fig. 4C and then partly re-open again to the key-hole shape shown in Fig. 4D.
The illustrated sequential opening and closing of the circumferential slots 6 provides axial flexibility to the filter sheets 3 which prevents buckling or tearing of the fragile sheets 3 during expansion of the carrier tube i.
The circumferential slots 6 also allow the overlapping sheets 3 to slide easily relative to each other during the expansion process.
It is observed that instead of arranging the filter sheets 3 in a longitudinal direction around the carrier tube 1 as illustrated in Fig. 3, the filter sheets 3 may also be arranged in a shallow helix around the carrier tube 1. In such case the helix angle should be selected small enough so that the deviation of the slots 6 from the tangential direction of the carrier tube 1 is less than 20 degrees.
Claims (8)
1. An expandable well screen for preventing migration of solid particles into a hydrocarbon fluid production well, which screen comprises a number of filter sheets which are secured in an iris-shaped configuration and co-axial to an expandable slotted carrier tube such that as a result of expansion of the tube the amount of overlap between adjacent filter sheets is reduced, wherein the filter sheets comprise slots which are oriented in a substantially circumferential orientation with respect to the carrier tube.
2. The well screen of claim 1, wherein the filter sheets consist of elongate strips with staggered rows of slots in a transversal direction with respect to a longitudinal axis of each strip.
3. The well screen of claim 2, wherein the pattern of slots is such that alternate rows are displaced up to half a slot pitch in the transverse direction, the length of the slots is greater than half the transverse slot pitch, and the pattern of slots is continued through the longitudinal edges of the strips.
4. The well screen of claim 3, wherein each strip is secured at regularly spaced attachment points along its length to the expandable slotted carrier tube.
5. The well screen of claim 4, wherein each strip is secured to the expandable slotted carrier tube at said attachment points by either spot welding, brazing, soldering, gluing, riveting or screwing the strip to the tube at each of said points.
6. The well screen of claim 5, wherein the regularly spaced attachment points are located on the nodes between 6 the ends of the slots of the expandable slotted carrier tube.
7. The well screen of claim 6, wherein the longitudinal axis of each strip is substantially parallel to a central axis of the carrier tube both before and after expansion of the carrier tube.
8. An expandable well screen for preventing migration of solid particles into a hydrocarbon fluid production well, said screen being substantially as hereinbefore described with reference to the accompanying drawings. Dated 25 November, 1999 Shell Internationale Research Maatschappij B.V. Patent Attorneys for the Applicant/Nominated Person SPRUSON FERGUSON i e **9 f oo* ft ft f [R:LIBC]07904.doc:bav
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97201267 | 1997-04-28 | ||
EP97201267 | 1997-04-28 | ||
PCT/EP1998/002577 WO1998049423A1 (en) | 1997-04-28 | 1998-04-27 | Expandable well screen |
Publications (2)
Publication Number | Publication Date |
---|---|
AU7651798A AU7651798A (en) | 1998-11-24 |
AU717503B2 true AU717503B2 (en) | 2000-03-30 |
Family
ID=8228269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU76517/98A Expired AU717503B2 (en) | 1997-04-28 | 1998-04-27 | Expandable well screen |
Country Status (14)
Country | Link |
---|---|
EP (1) | EP0980462B1 (en) |
AU (1) | AU717503B2 (en) |
BR (1) | BR9809005A (en) |
CA (1) | CA2284865C (en) |
DE (1) | DE69810610T2 (en) |
DK (1) | DK0980462T3 (en) |
ID (1) | ID22839A (en) |
MY (1) | MY119637A (en) |
NO (1) | NO317766B1 (en) |
NZ (1) | NZ337859A (en) |
OA (1) | OA11211A (en) |
RU (1) | RU2197600C2 (en) |
UA (1) | UA57785C2 (en) |
WO (1) | WO1998049423A1 (en) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6263972B1 (en) | 1998-04-14 | 2001-07-24 | Baker Hughes Incorporated | Coiled tubing screen and method of well completion |
MY121129A (en) * | 1999-02-01 | 2005-12-30 | Shell Int Research | Method for creating secondary sidetracks in a well system |
GB9921557D0 (en) * | 1999-09-14 | 1999-11-17 | Petroline Wellsystems Ltd | Downhole apparatus |
US6457518B1 (en) * | 2000-05-05 | 2002-10-01 | Halliburton Energy Services, Inc. | Expandable well screen |
US6530431B1 (en) | 2000-06-22 | 2003-03-11 | Halliburton Energy Services, Inc. | Screen jacket assembly connection and methods of using same |
US6412565B1 (en) | 2000-07-27 | 2002-07-02 | Halliburton Energy Services, Inc. | Expandable screen jacket and methods of using same |
NO20013594L (en) * | 2000-07-27 | 2002-01-28 | Halliburton Energy Serv Inc | Procedures for open-hole sand packing with expandable screens |
US6789621B2 (en) | 2000-08-03 | 2004-09-14 | Schlumberger Technology Corporation | Intelligent well system and method |
US6799637B2 (en) | 2000-10-20 | 2004-10-05 | Schlumberger Technology Corporation | Expandable tubing and method |
US6695054B2 (en) | 2001-01-16 | 2004-02-24 | Schlumberger Technology Corporation | Expandable sand screen and methods for use |
US6494261B1 (en) | 2000-08-16 | 2002-12-17 | Halliburton Energy Services, Inc. | Apparatus and methods for perforating a subterranean formation |
AU2001279214A1 (en) * | 2000-08-18 | 2002-03-04 | Ana M. Castano-Mears | Expandable coupling |
GB2395214B (en) * | 2000-10-20 | 2004-12-29 | Schlumberger Holdings | Expandable wellbore tubing |
BRPI0107164B1 (en) * | 2000-10-20 | 2016-04-26 | Schlumberger Surenco Sa | equipment for use in a wellbore, method for establishing an uncoated section of a wellbore in an underground formation, method for facilitating the use of a wellbore, method for sealing a portion of a tubular wellbore, system to facilitate communication along a wellbore and well line routing method |
GB2379690B8 (en) * | 2000-10-20 | 2012-12-19 | Halliburton Energy Serv Inc | Method of routing a communication line adjacent anexpandable wellbore tubing |
US6543545B1 (en) | 2000-10-27 | 2003-04-08 | Halliburton Energy Services, Inc. | Expandable sand control device and specialized completion system and method |
US20040011534A1 (en) | 2002-07-16 | 2004-01-22 | Simonds Floyd Randolph | Apparatus and method for completing an interval of a wellbore while drilling |
US6568472B1 (en) | 2000-12-22 | 2003-05-27 | Halliburton Energy Services, Inc. | Method and apparatus for washing a borehole ahead of screen expansion |
EP1223305B1 (en) * | 2001-01-16 | 2008-04-23 | Services Petroliers Schlumberger | Bi-stable expandable device and method for expanding such a device |
NO335594B1 (en) | 2001-01-16 | 2015-01-12 | Halliburton Energy Serv Inc | Expandable devices and methods thereof |
US7168485B2 (en) | 2001-01-16 | 2007-01-30 | Schlumberger Technology Corporation | Expandable systems that facilitate desired fluid flow |
US6695067B2 (en) | 2001-01-16 | 2004-02-24 | Schlumberger Technology Corporation | Wellbore isolation technique |
US20030070811A1 (en) | 2001-10-12 | 2003-04-17 | Robison Clark E. | Apparatus and method for perforating a subterranean formation |
US7886831B2 (en) | 2003-01-22 | 2011-02-15 | Enventure Global Technology, L.L.C. | Apparatus for radially expanding and plastically deforming a tubular member |
US7712522B2 (en) | 2003-09-05 | 2010-05-11 | Enventure Global Technology, Llc | Expansion cone and system |
WO2006020960A2 (en) | 2004-08-13 | 2006-02-23 | Enventure Global Technology, Llc | Expandable tubular |
RU2479711C1 (en) * | 2011-11-28 | 2013-04-20 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Reinforcement method of productive formations at thermal methods of oil extraction, and extendable filter for its implementation |
GB201323121D0 (en) | 2013-12-30 | 2014-02-12 | Darcy Technologies Ltd | Downhole Apparatus |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2812025A (en) * | 1955-01-24 | 1957-11-05 | James U Teague | Expansible liner |
US3353599A (en) * | 1964-08-04 | 1967-11-21 | Gulf Oil Corp | Method and apparatus for stabilizing formations |
AU7568096A (en) * | 1995-11-08 | 1997-05-29 | Shell Internationale Research Maatschappij B.V. | Deformable well screen and method for its installation |
-
1998
- 1998-04-24 MY MYPI9801852 patent/MY119637A/en unknown
- 1998-04-27 WO PCT/EP1998/002577 patent/WO1998049423A1/en active IP Right Grant
- 1998-04-27 DE DE69810610T patent/DE69810610T2/en not_active Expired - Lifetime
- 1998-04-27 DK DK98924261T patent/DK0980462T3/en active
- 1998-04-27 UA UA99116448A patent/UA57785C2/en unknown
- 1998-04-27 ID IDW991281A patent/ID22839A/en unknown
- 1998-04-27 EP EP98924261A patent/EP0980462B1/en not_active Expired - Lifetime
- 1998-04-27 AU AU76517/98A patent/AU717503B2/en not_active Expired
- 1998-04-27 CA CA002284865A patent/CA2284865C/en not_active Expired - Lifetime
- 1998-04-27 RU RU99125079A patent/RU2197600C2/en active
- 1998-04-27 BR BR9809005-4A patent/BR9809005A/en not_active IP Right Cessation
- 1998-04-27 NZ NZ337859A patent/NZ337859A/en not_active IP Right Cessation
-
1999
- 1999-10-27 NO NO19995248A patent/NO317766B1/en not_active IP Right Cessation
- 1999-10-28 OA OA9900238A patent/OA11211A/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2812025A (en) * | 1955-01-24 | 1957-11-05 | James U Teague | Expansible liner |
US3353599A (en) * | 1964-08-04 | 1967-11-21 | Gulf Oil Corp | Method and apparatus for stabilizing formations |
AU7568096A (en) * | 1995-11-08 | 1997-05-29 | Shell Internationale Research Maatschappij B.V. | Deformable well screen and method for its installation |
Also Published As
Publication number | Publication date |
---|---|
CA2284865A1 (en) | 1998-11-05 |
NO317766B1 (en) | 2004-12-13 |
OA11211A (en) | 2003-07-18 |
AU7651798A (en) | 1998-11-24 |
BR9809005A (en) | 2000-08-08 |
NO995248D0 (en) | 1999-10-27 |
DE69810610D1 (en) | 2003-02-13 |
DK0980462T3 (en) | 2003-04-07 |
DE69810610T2 (en) | 2003-07-03 |
WO1998049423A1 (en) | 1998-11-05 |
ID22839A (en) | 1999-12-09 |
EP0980462A1 (en) | 2000-02-23 |
EP0980462B1 (en) | 2003-01-08 |
NO995248L (en) | 1999-10-27 |
UA57785C2 (en) | 2003-07-15 |
NZ337859A (en) | 2000-03-27 |
MY119637A (en) | 2005-06-30 |
CA2284865C (en) | 2005-10-25 |
RU2197600C2 (en) | 2003-01-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FGA | Letters patent sealed or granted (standard patent) |