WO2009067021A2 - Method and device for determination of fluid inflow to a well - Google Patents

Method and device for determination of fluid inflow to a well Download PDF

Info

Publication number
WO2009067021A2
WO2009067021A2 PCT/NO2008/000410 NO2008000410W WO2009067021A2 WO 2009067021 A2 WO2009067021 A2 WO 2009067021A2 NO 2008000410 W NO2008000410 W NO 2008000410W WO 2009067021 A2 WO2009067021 A2 WO 2009067021A2
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
well
plug
accordance
device
Prior art date
Application number
PCT/NO2008/000410
Other languages
French (fr)
Other versions
WO2009067021A3 (en
Inventor
Espen Osaland
Lasse Haugland
David Lea Parker
Original Assignee
Aker Well Service As
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to NO20076009 priority Critical
Priority to NO20076009 priority
Priority to NO20081726A priority patent/NO332966B1/en
Priority to NO20081726 priority
Application filed by Aker Well Service As filed Critical Aker Well Service As
Publication of WO2009067021A2 publication Critical patent/WO2009067021A2/en
Publication of WO2009067021A3 publication Critical patent/WO2009067021A3/en

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B49/00Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/08Obtaining fluid samples or testing fluids, in boreholes or wells
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/124Units with longitudinally-spaced plugs for isolating the intermediate space
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/128Packers; Plugs with a member expanded radially by axial pressure

Abstract

A method and device for determining at which well portion (6, 8) of a petroleum well (10) a particular fluid or a particular amount of fluid is entering the well (10), the method including the operations of: - connecting an expandable plug (1) to an actuator (2); - moving the actuator (2) and the plug (1) to a first position (6) in the well (10); - setting the plug (1) in the well (10) by activating the actuator (2); - producing fluid from at least one portion of the well (10) which is open; - determining the identity of at least one of the fluids; and - releasing the plug (1) by deactivating the actuator (2).

Description

METHOD AND DEVICE FOR DETERMINATION OF FLUID INFLOW TO A WELL

This invention relates to a method for determining the inflow of fluid to a well. More particularly, it relates to a method for determining in which well portion of a petroleum well a particular fluid, or a particular amount of fluid, is entering the well. The invention also includes a device for practising the method, the device being well suited, in one embodiment, for shutting off an intermediate portion of the well .

During the production of petroleum, especially in the late phase of a well, considerable amounts of water may enter the well. It is often connected with difficulties to establish in which portion or portions of the well the water is entering.

According to the prior art, different measuring methods may be used, whereby it can be determined relatively accurately where in the well the inflow is occurring and at what rate. However, equipment of this kind is relatively complicated and expensive. The necessary time consumption for rigging equipment, measuring and rigging down, during which the well is unproductive, can be considerable.

The invention has for its object to remedy or reduce at least one of the drawbacks of the prior art .

The object is achieved according to the invention through the features which are specified in the description below and in the claims that follow.

A method is provided for determining at which portion of a petroleum well a particular fluid, or a particular amount of fluid, is entering the well, characterized by the method comprising the operations of:

- connecting an expandable plug to an actuator;

- moving the actuator and plug to a first position in the well ; - setting the plug in the well by activating the actuator;

- producing fluid from at least one portion of the well;

- determining the identity of at least one of the fluids; and

- releasing the plug by deactivating the actuator.

In addition, the composition of the fluids or the amount of the fluid produced can be determined.

If necessary, the actuator and plug are moved to a second position within a second well portion to be examined, after which the plug is set in the well by activating the actuator, and fluid is produced from the part of the well which is open. At least the identity of one of the fluids, the composition of the fluids or the amount of the fluid produced is determined, the plug being released by deactivation of the actuator.

With advantage, the actuator and plug are pulled up to the surface after the examination has been finished.

In this connection an actuator is an axial actuator, in which an actuator rod is moved relative to the actuator housing of the actuator. In the petroleum activity an axial actuator is often called a "stroker" . The stroker may be connected to a downhole tractor and/or to a cable or to coiled tubing which is connected to the surface. Most often, a stroker is pro- vided with an anchor to be able to attach to the borehole wall before the stroker is to be activated. It is normal to be able to control the actuator from the surface by means of electric signals or by means of so-called "mud pulse teleme- try" .

A plug is provided for practising the method, comprising an elastic element, a mounting holder and a holding-up element, movement of the mounting holder and the holding-up element in a direction towards each other causing the intermediate elas- tic element to be expanded radially, the mounting holder and the holding-up element being connected to the housing, respectively actuator rod, of an actuator.

The holding-up element is connected to the housing of the actuator by means of a first intermediate piece.

The mounting holder is connected to the actuator rod of the actuator by means of a mounting element. The mounting element extends through an opening in the elastic element.

The mounting holder is connected to the mounting element by means of a breakable securing element .

In another embodiment the plug includes two or more elastic elements. Two elastic elements are held spaced apart by means of a second intermediate piece.

An aspect of the plug is that the mounting element can be flowed through, for example by means of an internal bore, the mounting element being perforated.

Another aspect of the plug is that the holding-up element or the first intermediate piece can be flowed through, for example by means of a perforation.

Yet another aspect of the plug is that the intermediate piece can be flowed through for example by means of a perforation.

Thus the plug can be flowed through. By providing the plug with a lid near the mounting holder, when the second intermediate piece is also perforated, the plug will let fluid through only from the well portion which is between the elastic elements.

The plug may include more than two elastic elements so as to choose which ones of the portions of the well will be shut off and which ones will be able to produce fluid.

The proposed method and device provide a simple and cost- effective solution to a long-felt problem. After one well portion has been examined, the plug may be moved to a position within a second well portion for a new sample to be taken, and so on until the well has been mapped. Then, when it has been decided where in the well the fluid in question is entering, necessary measures can be taken in the relevant portion or portions in the well.

In what follows is described an example of a preferred method and embodiment which are visualized in the accompanying draw- ings, in which:

Figure 1 shows a well in which a plug has been positioned;

Figure 2 shows in section, on a larger scale, the plug mounted on an actuator;

Figure 3 shows the same as figure 2, but after the actuator has been activated;

Figure 4 shows the well in which a plug of another embodiment has been placed; and Figure 5 shows principally the same as figure 4 but after the actuator has been activated.

In the drawings the reference numeral 1 indicates a plug which is connected to an actuator 2, the actuator 2 being connected to a downhole tractor 4.

The plug 1 is in a first position 6 spaced from a second position 8 in a well 10.

The plug 1 includes a relatively elongated cylindrical, elastic element 12 which is provided with a centric through open- ing 14, see figure 2.

The elastic element 12 is formed with a cylindrical through opening 14 and is provided, at each of its end portions, with an outward-projecting, externally threaded pipe stub 16. Nearest to the actuator 2 the elastic element 12 is connected by means of the corresponding pipe stub 16 to a holding-up element 18. The holding-up element 18 is connected to the actuator housing 20 of the actuator 2 by means of a cylinder- shaped first intermediate piece 22.

At its opposite end portion the elastic element 12 is con- nected by means of the corresponding pipe stub 16 to a mounting holder 24. A breakable securing element 26 in the form of a brass bolt connects the mounting holder 24 to a mounting element 28 extending through the opening 14 of the elastic element 12.

The mounting element 28 is connected to the actuator rod 30 of the actuator 2.

After the plug 1 has been positioned in the well 10, the actuator 2 is activated, whereby the actuator rod 30 is moved in the direction of the actuator 2. The mounting holder 24 is moved by means of the mounting element 28 and securing element 26 towards the holding-up element 18 which is held at rest relative to the actuator 2 by means of the first intermediate piece 22, see figure 3. The elastic element 12 of the plug 1 is thereby brought to expand radially outwards, whereby the well 10 is sealed.

The plug 1 is released by deactivating the actuator 2 in such a manner that the mounting holder 24 takes its initial position relative to the holding-up element 18.

If the actuator 2 should fail after it has been activated, the plug 1 may be released by breaking the securing element 26, for example by means of a stroke.

When the plug 1 is set in a second position 8 further into the well 10 than the first position 6, fluid may be produced from those of the well's 10 portions that are upstream of the plug 1 in the well 10.

If desirable, the procedure may be repeated between more of the well portions 6, 8 and also the well portions not shown.

In another embodiment, see figures 4 and 5, the plug 1 is provided with two elastic elements 12. The two elastic elements 12 are kept spaced apart axially by a second intermediate piece 32.

In this alternative embodiment the mounting element 28 is tubular and perforated by means of openings 34. The holding-up element 18 is also perforated by means of openings 36.

When the plug 1 is set, the portion of the well 10 located between the two elastic elements 12 is sealed off from the other portions of the well 10, fluid from the portions of the well 10 located within the plug 1 being able to flow past the plug 1 via the tubular mounting element 28 and openings 34, 36.

As the plug 1 is shown in figure 5, the mounting element 28 is sealed by means of a lid 40 near the mounting holder 24. The lid 38 may be formed by a valve not shown.

By the second intermediate piece 32 being perforated by means of openings 38, fluid from the portion of the well 10 located between the elastic elements 12 may flow up in the well via the openings 34, 36, 38 and the mounting element 28, while, at the same time, the mounting element 28 is closed to inflow from other well portions. The openings 38 may be closable, for example by means of a movable slide not shown.

Claims

C l a i m s
1. A method for determining at which well portion (6, 8) of a petroleum well (10) a particular fluid or a particular amount of fluid is entering the well (10) , c h a r a c t e r i z e d i n that the method includes the operations of:
- connecting an expandable plug (1) to an actuator (2);
- moving the actuator (2) and the plug (1) to a first position (6) in the well (10) ;
- setting the plug (1) in the well (10) by activating the actuator (2) ;
- producing fluid from at least one portion of the well (10) which is open; - determining the identity of at least one of the fluids ; and
- releasing the plug (1) by deactivating the actuator (2) .
2. The method in accordance with claim 1, c h a r a c - t e r i z e d i n that the composition of the fluids or the amount of the fluid produced is determined.
3. The method in accordance with claim 1, c h a r a c t e r i z e d i n that the actuator (2) and plug (1) are moved to a second position within a second well portion (8) to be examined;
- the plug (1) is set in the well (10) by activating the actuator (2) ;
- fluid is produced from at least one portion of the well (10) which is open; - the identity of at least one of the fluids is determined; and - the plug (1) is released by deactivating the actuator (2) .
4. The method in accordance with claim 1 or claim 3, c h a r a c t e r i z e d i n that the actuator (2) and plug (1) are pulled to the surface.
5. A plug device (1) including an elastic element (12), a mounting holder (24) and a holding-up element (18) , movement of the mounting holder (24) and the holding- up element (18) in the direction towards each other causing the intermediate elastic element (12) to be expanded radially, c h a r a c t e r i z e d i n that the mounting holder (24) and the holding-up element (18) are connected to the actuator housing (20) , respectively the actuator rod (30) , of an actuator (2) .
6. The device in accordance with claim 5, c h a r a c t e r i z e d i n that the holding-up element (18) is connected to the actuator housing (20) of the actuator (2) by means of a first intermediate piece (22) .
7. The device in accordance with claim 5, c h a r a c t e r i z e d i n that the mounting holder (24) is connected to the actuator rod (30) of the actuator (2) by means of a mounting element (28) .
8. The device in accordance with claim 7, c h a r a c t e r i z e d i n that the mounting element (28) extends through an opening (14) in the elastic element (12) .
9. The device in accordance with claim 5, c h a r a c - t e r i z e d i n that the mounting holder (24) is connected to the mounting element (28) by means of a breakable securing element (26) .
10. The device in accordance with claim 5, c h a r a c t e r i z e d i n that the plug 1 includes two or more elastic elements (12) .
11. The device in accordance with claim 6, c h a r a c t e r i z e d i n that two elastic elements (12) are kept spaced apart by means of a second intermediate piece (32) .
12. The device in accordance with claim 5, c h a r a c t e r i z e d i n that the plug (5) can be flowed through .
13. The device in accordance with claim 5, c h a r a c t e r i z e d i n that the mounting element (28) can be flowed through.
14. The device in accordance with claim 13, c h a r a c t e r i z e d i n that the mounting element (28) is perforated.
15. The device in accordance with claim 5, c h a r a c - t e r i z e d i n that the holding-up element (18) can be flowed through.
16. The device in accordance with claim 5, c h a r a c t e r i z e d i n that a second intermediate piece (32) can be flowed through.
PCT/NO2008/000410 2007-11-23 2008-11-19 Method and device for determination of fluid inflow to a well WO2009067021A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NO20076009 2007-11-23
NO20076009 2007-11-23
NO20081726A NO332966B1 (en) 2007-11-23 2008-04-09 Device for oppspennbar elastic bronnplugg
NO20081726 2008-04-09

Publications (2)

Publication Number Publication Date
WO2009067021A2 true WO2009067021A2 (en) 2009-05-28
WO2009067021A3 WO2009067021A3 (en) 2009-09-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2008/000410 WO2009067021A2 (en) 2007-11-23 2008-11-19 Method and device for determination of fluid inflow to a well

Country Status (1)

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WO (1) WO2009067021A2 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7708068B2 (en) 2006-04-20 2010-05-04 Halliburton Energy Services, Inc. Gravel packing screen with inflow control device and bypass
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
US7802621B2 (en) 2006-04-24 2010-09-28 Halliburton Energy Services, Inc. Inflow control devices for sand control screens
US7857061B2 (en) 2008-05-20 2010-12-28 Halliburton Energy Services, Inc. Flow control in a well bore
US8230935B2 (en) 2009-10-09 2012-07-31 Halliburton Energy Services, Inc. Sand control screen assembly with flow control capability
US8256522B2 (en) 2010-04-15 2012-09-04 Halliburton Energy Services, Inc. Sand control screen assembly having remotely disabled reverse flow control capability
US8291976B2 (en) 2009-12-10 2012-10-23 Halliburton Energy Services, Inc. Fluid flow control device
US8403052B2 (en) 2011-03-11 2013-03-26 Halliburton Energy Services, Inc. Flow control screen assembly having remotely disabled reverse flow control capability
US8453746B2 (en) 2006-04-20 2013-06-04 Halliburton Energy Services, Inc. Well tools with actuators utilizing swellable materials
US8474535B2 (en) 2007-12-18 2013-07-02 Halliburton Energy Services, Inc. Well screen inflow control device with check valve flow controls
US8485225B2 (en) 2011-06-29 2013-07-16 Halliburton Energy Services, Inc. Flow control screen assembly having remotely disabled reverse flow control capability
US9127526B2 (en) 2012-12-03 2015-09-08 Halliburton Energy Services, Inc. Fast pressure protection system and method
US9488029B2 (en) 2007-02-06 2016-11-08 Halliburton Energy Services, Inc. Swellable packer with enhanced sealing capability
US9695654B2 (en) 2012-12-03 2017-07-04 Halliburton Energy Services, Inc. Wellhead flowback control system and method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357504A (en) * 1965-06-07 1967-12-12 Gerald G Calhoun Straddle packer wire line tester
US3554280A (en) * 1969-01-21 1971-01-12 Dresser Ind Well packer and sealing elements therefor
EP0497588A1 (en) * 1991-01-30 1992-08-05 Halliburton Company Downhole packer apparatus
FR2701290A1 (en) * 1993-02-09 1994-08-12 Hydraulique Ste Lyonnaise Device making it possible to sample (or inject) a gas or liquid in (or into) a defined region of a tubular element
US5465628A (en) * 1992-09-22 1995-11-14 Timmons; Robert D. Multiple sampling lysimeter
EP1002933A2 (en) * 1998-11-02 2000-05-24 Halliburton Energy Services, Inc. Downhole hydraulic pressure generator
US20020100585A1 (en) * 2001-01-29 2002-08-01 Spiers Christopher W. Slimhole fluid tester

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357504A (en) * 1965-06-07 1967-12-12 Gerald G Calhoun Straddle packer wire line tester
US3554280A (en) * 1969-01-21 1971-01-12 Dresser Ind Well packer and sealing elements therefor
EP0497588A1 (en) * 1991-01-30 1992-08-05 Halliburton Company Downhole packer apparatus
US5465628A (en) * 1992-09-22 1995-11-14 Timmons; Robert D. Multiple sampling lysimeter
FR2701290A1 (en) * 1993-02-09 1994-08-12 Hydraulique Ste Lyonnaise Device making it possible to sample (or inject) a gas or liquid in (or into) a defined region of a tubular element
EP1002933A2 (en) * 1998-11-02 2000-05-24 Halliburton Energy Services, Inc. Downhole hydraulic pressure generator
US20020100585A1 (en) * 2001-01-29 2002-08-01 Spiers Christopher W. Slimhole fluid tester

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8453746B2 (en) 2006-04-20 2013-06-04 Halliburton Energy Services, Inc. Well tools with actuators utilizing swellable materials
US7708068B2 (en) 2006-04-20 2010-05-04 Halliburton Energy Services, Inc. Gravel packing screen with inflow control device and bypass
US7802621B2 (en) 2006-04-24 2010-09-28 Halliburton Energy Services, Inc. Inflow control devices for sand control screens
US9488029B2 (en) 2007-02-06 2016-11-08 Halliburton Energy Services, Inc. Swellable packer with enhanced sealing capability
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
US8474535B2 (en) 2007-12-18 2013-07-02 Halliburton Energy Services, Inc. Well screen inflow control device with check valve flow controls
US7857061B2 (en) 2008-05-20 2010-12-28 Halliburton Energy Services, Inc. Flow control in a well bore
US8074719B2 (en) 2008-05-20 2011-12-13 Halliburton Energy Services, Inc. Flow control in a well bore
US8230935B2 (en) 2009-10-09 2012-07-31 Halliburton Energy Services, Inc. Sand control screen assembly with flow control capability
US8291976B2 (en) 2009-12-10 2012-10-23 Halliburton Energy Services, Inc. Fluid flow control device
US8256522B2 (en) 2010-04-15 2012-09-04 Halliburton Energy Services, Inc. Sand control screen assembly having remotely disabled reverse flow control capability
US8403052B2 (en) 2011-03-11 2013-03-26 Halliburton Energy Services, Inc. Flow control screen assembly having remotely disabled reverse flow control capability
US8485225B2 (en) 2011-06-29 2013-07-16 Halliburton Energy Services, Inc. Flow control screen assembly having remotely disabled reverse flow control capability
US9127526B2 (en) 2012-12-03 2015-09-08 Halliburton Energy Services, Inc. Fast pressure protection system and method
US9695654B2 (en) 2012-12-03 2017-07-04 Halliburton Energy Services, Inc. Wellhead flowback control system and method

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