WO2016179289A1 - Rotating control line cutting sub - Google Patents
Rotating control line cutting sub Download PDFInfo
- Publication number
- WO2016179289A1 WO2016179289A1 PCT/US2016/030790 US2016030790W WO2016179289A1 WO 2016179289 A1 WO2016179289 A1 WO 2016179289A1 US 2016030790 W US2016030790 W US 2016030790W WO 2016179289 A1 WO2016179289 A1 WO 2016179289A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mandrel
- cutting
- cutting apparatus
- cut
- line
- Prior art date
Links
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000003801 milling Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/04—Cutting of wire lines or the like
Definitions
- the field of the invention is devices that cut one or more control lines when the tubular string that supports those lines is cut and removed from a subterranean location.
- control lines have splice subs where the connection is essentially a push into a receptacle held with a ferrule (see FIG. 7) there was a significant risk that the control line on one side or the other of a connector could release an end of the control line. If that happens there would then be a loose segment between the cut location for the control line and the pullout location from the connector. This loose segment or segments could then jam the cut portion of the string that is being removed and cause a very expensive milling job to get the components freed up for removal from the borehole.
- FIGS. 1-7 This problem is illustrated with an existing tool whose typical use is illustrated in FIGS. 1-7.
- body 10 is connected on opposed ends as part of a tubular string to be cut.
- a milled sleeve 12 has slots 14 for control lines 16.
- a splice sub assembly 18 is essentially a connector for opposed ends 15 and 17 of a given control line 16 as shown in FIG. 7.
- the cut sub 20 has a cutting edge 22 that is moved up to a location of enlarged outer dimension 24 where each of the control lines 16 come out of a respective channel 26 so that edge 22 shears off each line 16 upon relative movement with respect to the portion of the body 10 that remains in the hole, usually supported by a packer that is not shown.
- FIG. 2 shows the axial distance the body 10 above the cut has to be lifted to get the edge 22 to the enlarged outer dimension 24 to make the cut.
- FIG. 3 shows the onset of movement to make the cut with such movement putting a tensile force on the control lines, which can have the effect of pulling one or more control lines 16 out of a respective assembly 18.
- Arrow 30 indicates the direction of movement of the cut sub 20 with respect to segment 32 that remains stationary supported by a packer that is not shown.
- FIG. 4 shows further movement to the location of the actual cut.
- FIG. 5 shows the separation from segment 32 of the cut sub 20 as movement continues in the direction of arrow 30. It also shows the control lines 16 pulled out of the splice sub 18 so that multiple segments 36 are formed with their top end 34 and their lower end at the cut location 38. As shown in FIG. 6 these segments 36 are loose and can fall down the hole making subsequent operations such as latching onto segment 32 impossible. If this occurs a very expensive milling operation would be in order.
- the present invention addresses this issue by limiting the tensile stress on the control lines from a cutting mechanism that operates with rotary motion induced from axial movement so that a very limited axial stretching occurs as the lines are cut with a rotatably mounted cutter that is induced to turn as the cut segment of the tubular is axially raised.
- the axial tensile force is severely limited compared to the all axial design with the result that the applied axial force to the control lines to sever them does not pull out ends of a control line from a connector.
- a control line cutting tool is mounted for rotation in response to lifting the cut segment.
- the blade is oriented to cut as the cutter is forced to rotate to follow a spiral groove in the portion of the body below the cut.
- the follower pin in the cutter reaches the end of the spiral slot all the control lines have been cut with minimal stress on the control lines to accomplish the cut.
- the pin then enters a longitudinal slot to allow separation of the body above the cut from the remaining portion in the borehole supported by a packer.
- FIGS, la and lb are perspective views of a prior art design for a control line cutter showing the run in position
- FIG. 2 is a detailed view of FIGS, la and lb showing the amount of axial stroke required to cut the control lines;
- FIG. 3 is the view of FIG. 2 after the tubular is cut and at the onset of movement of the portion of the tubular above the cut;
- FIG. 4 is the view of FIG. 3 showing sufficient movement to cut the control lines
- FIG. 5 is the view of FIG. 4 showing some control lines pulled out of connector to form loose segments
- FIG. 6 is the view of FIG. 5 upon further axial movement showing the loose segments before they fall downhole to the remaining part of the cut tubular;
- FIG. 7 is a detailed view of a single connector such as those shown in FIG. lb with the control lines secured in it;
- FIGS. 8a and 8b show rotated views of the body of the present invention showing the cut location and the spiral slot;
- FIGS. 9a and 9b show a section view in perspective illustrating the bearing assembly under the cutting sub that allows relative rotation with respect to the body;
- FIGS. 10a and 10b are a section view of the body showing the cut zone and the actual cut, respectively;
- FIG. 11 is a detailed view of the cutting sub
- FIGS. 12a and 12b illustrate the pin in the cutting sub and the spiral track that causes it to rotate
- FIG. 13 shows the onset of rotation of the cutting sub
- FIGS. 14a and 14b are perspective views showing the cut and the onset of rotation of the cutting sub
- FIG. 15 is a detailed view of the control lines being cut;
- FIG. 16 shows an axial portion of the slot after the spiral portion to allow the portion of the body above the cut to separate from the portion below the cut;
- FIGS. 17a and 17b show component separation with the cut control lines remaining in the connectors and in the body portion below the cut to avoid loose control line segments;
- FIG. 18 shows the body components fully separated after the control lines have been cut.
- the body 40 has a cut zone indicated by arrow 42 and a series of axial grooves 44 into which control lines 46 will extend while coming out of grooves 44 at upper ends 48 as shown in FIG. 9b.
- a spirally oriented slot 50 ends in an axially oriented slot 52 for inducing rotation of the cutting sub 54 on bearing 56 as will be explained in more detail below.
- the body 40 has a milled sleeve 58 with grooves 60 in which connectors 62 connect opposed loose ends to make a continuous control line such as 46 as best shown in FIG. 12a.
- Milled sleeve 58 supports cutting sub 54 as best shown in FIG. 9b.
- Spacer sleeve 64 helps to retain the bearing 56 in position under cutting sub 54.
- FIGS. 10a and 10b graphically show the making of the cut 66 in the cutting zone indicated by arrow 42.
- the body segment 68 that is above the cut can be picked up. This raises the cutting sub 54 and induces its rotation and with it the rotation of cutting edge 70.
- the cutting edge 70 in the present invention is more axially oriented than transversely oriented with a slight angle of incline as best seen in FIG. 11.
- a port 72 accepts a guide pin 74 as best shown in FIG. 12b. The pin 74 initially sits at a starting end 76 of spiral slot 50.
- FIG. 13 shows the position of pin 74 from near the end 76 of spiral slot 50 at the onset of picking up segment 68.
- the cut sub 54 will rise slightly as it rotates on its bearing 56 with pin 74 moving toward axially oriented slot 52.
- FIGS 14a and 14b show segment 68 moving in the direction of arrow 79 as pin 74 moves in the spiral direction of arrow 80.
- FIG. 15 shows cut sub 54 raised and rotated in the direction of arrow 80 to bring the cutting edge 70 across the control lines 46 that extend beyond ends 48 of grooves 44.
- FIG. 16 shows the position of the pin 74 at axial slot 52 so that segments 68 and 78 can come fully apart.
- FIGS. 17a and 17b show the separated segments 68 and 78 with ends 82 of control lines 46 in grooves 44 and coming just short of the ends 48 of grooves 44. In that position the ends 82 are out of the way of later operations. On the other hand, ends 84 move in the direction of arrow 79 and come out of the hole with segment 68 and down to attached cut sub 54.
- FIG. 18 is a part section perspective of the movement shown ion FIGS. 17a and 17b.
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)
- Excavating Of Shafts Or Tunnels (AREA)
- Knives (AREA)
- Earth Drilling (AREA)
- Harvester Elements (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112017023430A BR112017023430A2 (en) | 2015-05-05 | 2016-05-04 | rotary control line cutting sub |
GB1719764.1A GB2555038A (en) | 2015-05-05 | 2016-05-04 | Rotating control line cutting sub |
NO20171810A NO20171810A1 (en) | 2015-05-05 | 2017-11-15 | Rotating Control Line Cutting sub |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201562157255P | 2015-05-05 | 2015-05-05 | |
US62/157,255 | 2015-05-05 | ||
US14/937,350 | 2015-11-10 | ||
US14/937,350 US20160326822A1 (en) | 2015-05-05 | 2015-11-10 | Rotating Control Line Cutting Sub |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016179289A1 true WO2016179289A1 (en) | 2016-11-10 |
Family
ID=57218312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2016/030790 WO2016179289A1 (en) | 2015-05-05 | 2016-05-04 | Rotating control line cutting sub |
Country Status (5)
Country | Link |
---|---|
US (1) | US20160326822A1 (en) |
BR (1) | BR112017023430A2 (en) |
GB (1) | GB2555038A (en) |
NO (1) | NO20171810A1 (en) |
WO (1) | WO2016179289A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020009695A1 (en) * | 2018-07-03 | 2020-01-09 | Halliburton Energy Services, Inc. | Method and apparatus for pinching control lines |
WO2020145939A1 (en) * | 2019-01-07 | 2020-07-16 | Halliburton Energy Services, Inc. | Separable housing assembly for tubular control conduits |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5720348A (en) * | 1996-04-23 | 1998-02-24 | Specialty Machine & Supply, Inc. | Apparatus and method for cutting wire |
WO2001088330A1 (en) * | 2000-05-15 | 2001-11-22 | Schlumberger Technology Corporation | Control line cutting tool and method |
US20050006102A1 (en) * | 2003-07-11 | 2005-01-13 | Schlumberger Technology Corporation | Cutting Tool |
US20140000895A1 (en) * | 2012-06-29 | 2014-01-02 | Baker Hughes Incorporated | Devices and Methods for Severing a Tube-Wire |
US20140033885A1 (en) * | 2012-08-03 | 2014-02-06 | Baker Hughes Incorporated | Method of cutting a control line outside of a tubular |
-
2015
- 2015-11-10 US US14/937,350 patent/US20160326822A1/en not_active Abandoned
-
2016
- 2016-05-04 GB GB1719764.1A patent/GB2555038A/en not_active Withdrawn
- 2016-05-04 BR BR112017023430A patent/BR112017023430A2/en not_active Application Discontinuation
- 2016-05-04 WO PCT/US2016/030790 patent/WO2016179289A1/en active Application Filing
-
2017
- 2017-11-15 NO NO20171810A patent/NO20171810A1/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5720348A (en) * | 1996-04-23 | 1998-02-24 | Specialty Machine & Supply, Inc. | Apparatus and method for cutting wire |
WO2001088330A1 (en) * | 2000-05-15 | 2001-11-22 | Schlumberger Technology Corporation | Control line cutting tool and method |
US20050006102A1 (en) * | 2003-07-11 | 2005-01-13 | Schlumberger Technology Corporation | Cutting Tool |
US20140000895A1 (en) * | 2012-06-29 | 2014-01-02 | Baker Hughes Incorporated | Devices and Methods for Severing a Tube-Wire |
US20140033885A1 (en) * | 2012-08-03 | 2014-02-06 | Baker Hughes Incorporated | Method of cutting a control line outside of a tubular |
Also Published As
Publication number | Publication date |
---|---|
GB201719764D0 (en) | 2018-01-10 |
US20160326822A1 (en) | 2016-11-10 |
NO20171810A1 (en) | 2017-11-15 |
BR112017023430A2 (en) | 2018-07-24 |
GB2555038A (en) | 2018-04-18 |
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