CA2571665A1 - Apparatus and method for moving drill cuttings - Google Patents

Apparatus and method for moving drill cuttings Download PDF

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Publication number
CA2571665A1
CA2571665A1 CA002571665A CA2571665A CA2571665A1 CA 2571665 A1 CA2571665 A1 CA 2571665A1 CA 002571665 A CA002571665 A CA 002571665A CA 2571665 A CA2571665 A CA 2571665A CA 2571665 A1 CA2571665 A1 CA 2571665A1
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CA
Canada
Prior art keywords
drill cuttings
vessel
cuttings
accordance
pressure
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
Application number
CA002571665A
Other languages
French (fr)
Other versions
CA2571665C (en
Inventor
George Alexander Burnett
David Wood
Kenneth Wayne Seyffert
William Christian Herben
James Michael Mcintosh
Colin Crabb
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Varco IP Inc
Original Assignee
Individual
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 claimed from US10/875,083 external-priority patent/US7195084B2/en
Application filed by Individual filed Critical Individual
Priority to CA2637231A priority Critical patent/CA2637231C/en
Publication of CA2571665A1 publication Critical patent/CA2571665A1/en
Application granted granted Critical
Publication of CA2571665C publication Critical patent/CA2571665C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/06—Arrangements for treating drilling fluids outside the borehole
    • E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
    • E21B21/065—Separating solids from drilling fluids
    • E21B21/066—Separating solids from drilling fluids with further treatment of the solids, e.g. for disposal
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/06—Arrangements for treating drilling fluids outside the borehole
    • 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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/001—Handling, e.g. loading or unloading arrangements
    • F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects

Abstract

A method and apparatus for processing drill cuttings, the method comprising obtaining drill cuttings from at least one of a shale shaker, hydrocyclone, centrifuge or drill cuttings dryer (801), measuring the moisture content of the drill cuttings preferably with a moisture sensor (821) to obtain a moisture value, comparing the moisture value to a predetermined threshold and conveying the drill cuttings in a dry cuttings route (825) if the moisture value is below the predetermined threshold or conveying the drill cuttings in a wet cuttings route (810) if the moisture value is above the threshold.

Claims (94)

1. An apparatus for selectively holding drill cuttings material, the apparatus comprising a vessel (2) having a first opening (7) through which drill cuttings material is introducible into the vessel (2) and a second opening (9) through which the drill cuttings material is passable out from the vessel (2), characterised in that the apparatus further comprises movement apparatus (21,26), the movement apparatus comprising a movement member (21) within the vessel (2) and movable adjacent the second opening (9) to facilitate passage of the drill cuttings material into the second opening.
2. An apparatus as claimed in Claim 1, further comprising a box (18) for receiving the drill cuttings material passing through the second opening (9), the box having a cuttings outlet (20) for connection to a conveying conduit.
3. An apparatus as claimed in Claim 2, further comprising a compressed gas inlet (19) for applying compressed gas to the drill cuttings to facilitate movement of the drill cuttings through said cuttings outlet (20).
4. An apparatus as claimed in Claim 2, wherein a balancing compressed air inlet (5) is located in the vessel (2) to inhibit drill cuttings from being blown back from the box (18) into the vessel (2) during discharge.
5. An apparatus as claimed in any preceding claim, wherein the vessel (2) is a pressure vessel.
6. An apparatus as claimed in Claim 5, wherein the pressure vessel (2) has been tested to withstand a working pressure of at least 2 Bar.
7. An apparatus as claimed in Claim 5, wherein the pressure vessel (2) has been tested to withstand a working pressure of at least 4 Bar.
8. An apparatus as claimed in Claim 5, wherein the pressure vessel (2) has been tested to withstand a working pressure of at least 7 Bar.
9. An apparatus as claimed in any preceding claim, wherein the movement apparatus (21,26) further comprises power apparatus (26) connected to the movement member (21) for moving the movement member (21).
10. An apparatus as claimed in any preceding claim, wherein the second opening (9) has a length and the movement member (21) comprises an elongated member (22) preferably, having a length substantially equal to or greater than the length of the second opening (9).
11. An apparatus as claimed in any preceding claim, wherein said elongate member (22) has an edge shaped for facilitating movement of the drill cuttings material to the second opening.
12. An apparatus as claimed in any preceding claim, wherein the second opening (9) has a width and the movement member (21) is movable back and forth across said width.
13. An apparatus as claimed in any preceding claim, wherein the movement member (21) comprises a frame (21) having a control shaft (25) connected to at least one curved outer perimeter portion (22).
14. An apparatus as claimed in any preceding claim, wherein the movement member (21) comprises a frame (22) having an outer perimeter portion generally eye-shaped.
15. An apparatus as claimed in any preceding claim, wherein the movement apparatus (11) comprises an auger (13).
16. An apparatus as claimed in Claim 15, wherein said auger (11) is arranged beneath said second opening (9).
17. An apparatus as claimed in Claim 15, wherein said auger (11) is arranged in a ditch (10).
18. An apparatus as claimed in any of Claims 15 to 17, further comprising a motor for rotating said auger.
19. An apparatus as claimed in Claim 18, further comprising fingers (17) located at the end of the auger for facilitating release of said drill cuttings from said auger (13).
20. An apparatus as claimed in any of Claims 15 to 19, wherein said auger (11) comprises at least one blade (14) of constant pitch.
21. An apparatus as claimed in any of Claims 15 to 19, wherein said auger (11) comprises at least one blade (14) having a variable pitch.
22. An apparatus as claimed in any preceding claim, further comprising a vent valve (8a) to prevent the vessel from being over pressurized.
23. An apparatus as claimed in any preceding claim, further comprising a cover (532) to selectively cover the second opening (9).
24. An apparatus as claimed in any preceding claim, further comprising a central stem (77) and a plurality of fingers or bristles (74) extending therefrom.
25. An apparatus as claimed in any preceding claim, wherein the vessel (2) has a substantially planar internal base (3).
26. An apparatus as claimed in any preceding claim, wherein said vessel (2) has at least one substantially vertical wall.
27. An apparatus as claimed in any preceding claim, wherein said vessel (2) has a domed top (4).
28. An apparatus as claimed in any preceding claim, wherein the vessel (2) is generally cylindrical with a generally circular base (3), the second opening (9) extending through the generally circular base (3).
29. An apparatus as claimed in any preceding claim, wherein said first opening (7) has a valve (478) therein for controlling ingress of drill cuttings.
30. An apparatus as claimed in any preceding claim, wherein said first opening (7) has a non return valve (8) for inhibiting drill cuttings from exiting through the first opening (7).
31. An apparatus as claimed in any preceding claim, wherein the vessel (472) has two sides (475) which slope toward each other.
32. An apparatus as claimed in any preceding claim, wherein said the vessel has a conical hopper portion (455).
33. An apparatus as claimed in Claim 32, wherein the conical hopper portion (455) has a cone angle and forms a lower section of the vessel and the cone angle is below a critical value required to achieve mass flow of the drill cuttings material.
34. An apparatus as claimed in any preceding claim, wherein said vessel (2) has a capacity of between 0.15 cubic metres and 1 cubic meter.
35. An apparatus as claimed in any preceding claim, wherein said vessel (2) has a capacity of at least three cubic metres.
36. An apparatus as claimed in any preceding claim, further comprising a moisture-content sensor (821,831,955) for sensing moisture content of drill cuttings.
37. An apparatus as claimed in Claim 36, further comprising a hopper (835) wherein said moisture-content sensor (821,831,955) is located in said hopper (835).
38. An apparatus as claimed in Claim 36, wherein said moisture-content sensor is located within the vessel.
39. An apparatus as claimed in any of Claims 36 to 38, further comprising a controller (701) for gathering data from said moisture-content sensor (821,831,955) and means (802,805,956,957) to divert the drill cuttings in response to the data.
40. An apparatus as claimed in Claim 39, wherein said means (956,957) comprises a diverter valve (956,957) for diverting said drill cuttings.
41. An apparatus as claimed in Claim 39 or 40, wherein said means (802) comprises a screw conveyor (802).
42. An apparatus as claimed in any of Claims 39 to 41, further comprising a storage vessel for storing dry drill cuttings.
43. An apparatus as claimed in any of Claims 39 to 42, further comprising a storage vessel for storing wet drill cuttings.
44. An apparatus as claimed in claim 42, wherein said storage vessel for storing dry cuttings is the internal bulk storage vessel of a drilling rig.
45. An apparatus as claimed in claim 42, wherein said storage vessel for storing dry cuttings is the internal hold of a boat or barge.
46. An apparatus as claimed in claim 42, wherein said storage vessel for storing wet or dry cuttings is a further apparatus as claimed in Claim 35.

* * *
47. A method for conveying drill cuttings, the method comprising the steps of loading a conveying line with drill cuttings and applying a positive pressure to move the cuttings therealong, characterised in that the step of loading the conveying line is carried out by a mechanical movement apparatus.
48. A method in accordance with claim 47, wherein the conveying line is provided with a compressed gas inlet, the method comprising the step of supply compressed gas through the compressed gas inlet to facilitate movement of the drill cuttings along the conveying line.
49. A method in accordance with claim 47 or 48, wherein the mechanical movement apparatus comprises an auger, the auger rotated to load the conveying line with drill cuttings.
50. A method in accordance with claim 49, wherein the auger is located in a pressure vessel, the method further comprising the step of loading the pressure vessel with drill cuttings whereupon the auger is rotated to load the conveying line with drill cuttings from the pressure vessel.
51. A method in accordance with Claim 50, further comprising the step of pressurizing the pressure vessel to inhibit drill cuttings from passing from the auger or conveying line back into the pressure vessel.
52. A method in accordance with Claim 50 or 51, wherein the pressure vessel has an inlet opening and a valve located in the inlet, the method further comprising the step of activating the valve to selectively allow drill cuttings into the pressure vessel.
53. A method in accordance with Claim 50, 51 or 52, wherein the pressure vessel has an inlet opening and a non return valve located in the inlet, the method further comprising the step of allowing the drill cuttings into the pressure vessel, the gas under pressure and drill cuttings therein prevented from escaping through the non return valve.

* * *
54. A method for storing drill cuttings in a storage vessel and discharging the drill cuttings therefrom into a pressurized conveying line, the method comprising the steps of loading the drill cuttings into a storage vessel, the method further comprising the steps of activating mechanical movement apparatus to move the drill cuttings toward an opening in the substantially in the storage vessel to facilitate discharge of the drill cuttings.
55. A method in accordance with Claim 55, wherein the storage vessel is pressurized.
56. A method in accordance with Claim 55 or 56, wherein the storage vessel has a substantially planar base, the opening located in the substantially planar base.
57. A method as claimed in Claim 55 or 56, wherein the mechanical movement apparatus comprises a wiper, the method further comprising the step of moving the wiper to move at least some of the drill cuttings toward said opening.
58. A method as claimed in Claim 57, wherein said wiper forms part of a frame, the method comprising the step of moving the frame to move at least some of the drill cuttings toward said opening.
59. A method as claimed in Claim 57, wherein said wiper comprises finger or bristles to move at least some of the drill cuttings toward said opening.
60. A method as claimed in any of Claims 55 to 59, wherein said mechanical movement apparatus further comprises a piston and cylinder, the method further comprising the step of activating the piston and cylinder to move the wiper.

* * *
61. A method for processing drill cuttings, the method comprising obtaining drill cuttings from at least one of a shale shaker, hydrocyclone, centrifuge or drill cuttings dryer, measuring the moisture content of the drill cuttings to obtain a moisture value, comparing the moisture value to a predetermined threshold and conveying the drill cuttings in a dry cuttings route if the moisture value is below the predetermined threshold or conveying the drill cuttings in a wet cuttings route if the moisture value is above the threshold.
62. A method in accordance with Claim 61, wherein the dry cuttings route comprises a feeder apparatus and a pneumatic conveying line, the method further comprising the steps of loading the drill cuttings into the feeder apparatus, which feeder apparatus feeds the pneumatic conveying line with the drill cuttings.
63. A method in accordance with Claim 62, wherein the pneumatic conveying line is a positive pressure pneumatic conveying line.
64. A method in accordance with Claim 62 or 63, wherein the pneumatic conveying line leads to a storage vessel, the method further comprising the step of conveying the drill cuttings through the pneumatic conveying line to the storage vessel.
65. A method in accordance with Claim 62 or 63, wherein the pneumatic conveying line leads to a bulk storage tanks of an oil or gas rig, the method further comprising the step of conveying the drill cuttings through the pneumatic conveying line to the bulk storage tanks.
66. A method in accordance with Claim 62 or 63, wherein the pneumatic conveying line leads to a hold of an oil or gas rig, the method further comprising the step of conveying the drill cuttings through the pneumatic conveying line to the hold.
67. A method in accordance with any of Claims 62 to 66 wherein the step of measuring the moisture content of the drill cuttings is carried out with a moisture sensor located in the feeder apparatus.
68. A method in accordance with any of Claims 62 to 67 wherein the feeder apparatus comprises a hopper and a pressure vessel, the step of measuring the moisture content of the drill cuttings is carried out with a moisture sensor located in the hopper.
69. A method in accordance with any of Claims 61 to 68, wherein the wet cuttings route comprises a feeder apparatus and a pneumatic conveying line, the method further comprising the steps of loading the drill cuttings into the feeder apparatus, which feeder apparatus feeds the pneumatic conveying line with the drill cuttings.
70. A method in accordance with Claim 69, wherein the pneumatic conveying line is a positive pressure pneumatic conveying line.
71. A method in accordance with Claim 69 or 70, wherein the pneumatic conveying line leads to a storage vessel, the method further comprising the step of conveying the drill cuttings through the pneumatic conveying line to the storage vessel.
72. A method in accordance with Claim 69 or 70, wherein the pneumatic conveying line leads to a cuttings dryer for further drying.
73. A method in accordance with any of Claims 62 to 66 wherein the step of measuring the moisture content of the drill cuttings is carried out with a moisture sensor located in the feeder apparatus.
74. A method in accordance with any of Claims 62 to 66 wherein the feeder apparatus comprises a hopper and a pressure vessel, the step of measuring the moisture content of the drill cuttings is carried out with a moisture sensor located in the hopper.
75. A method in accordance with Claim 61, wherein the drill cuttings from the at least one of a shale shaker, hydrocyclone, centrifuge or drill cuttings dryer, are feed into a feeder apparatus whereupon moisture content of the drill cuttings is measured to obtain a moisture value with a moisture sensor located therein, the feeder apparatus feeding the drill cuttings into a pneumatic conveying line, the conveying line having a diverter valve therein, the method further comprising the steps of diverting the drill cuttings using the diverter valve into a dry cuttings route if the moisture value is below the predetermined threshold or conveying the drill cuttings in a wet cuttings route if the moisture value is above the threshold.
76. A method in accordance with any of Claims 61 to 75, wherein a screw conveyor is located beneath the at least one of a shale shaker, hydrocyclone, centrifuge or drill cuttings dryer to receive the drill cuttings, the screw conveyor comprising a drive such that the screw conveyor is reversible to convey the drill cuttings in one direction for a dry cuttings route and in a second direction for a wet cuttings route.
77. A method in accordance with any of Claims 61 to 76, wherein the predetermined threshold is 5% moisture content.
78. A method in accordance with any of Claims 61 to 76, wherein the predetermined threshold is 3% moisture content.
79. A method in accordance with any of Claims 61 to 76, wherein the predetermined threshold is 1% moisture content.
80. An apparatus for carrying out the method as claimed in any of Claims 61 to 79.
81. An apparatus for carrying out the method as claimed in any of Claims 61 to 79, the apparatus comprising a moisture sensor (821,955) and means (802,956) for directing the drill cuttings in a wet cuttings route or a dry cuttings route.
82. An apparatus as claimed in Claims 81, the apparatus further comprising a controller (829,960) for obtaining data from the moisture sensor (821,955) and comparing the data to a predetermined value and activating said means according to the data.
83. A method for moving drill cuttings, the method comprising the steps of loading a conduit with drill cuttings, applying positive pneumatic pressure to the drill cuttings to push the drill cuttings through the conduit characterised in that the positive pressure is applied through inlets at spaced apart intervals along the conduit for facilitating movement of drill cuttings therethrough.
84. A method in accordance with Claim 83, wherein pneumatic pressure in the conduit is measured at spaced intervals therealong, the pressure measurements reported to a controller, the controller controlling the application of pneumatic pressure through said inlets at spaced apart intervals along the conduit.
85. A method in accordance with Claim 83, wherein controller switches the air inlet on or off in response to the pressure measurements.
86. A method in accordance with Claim 83 or 84, wherein the pressure applied at each subsequent inlet is less than the pressure of the previous inlet.
87. A method in accordance with any of Claims 83 to 86, wherein said tubes to the inlets at spaced apart intervals along the conduit, wherein the tubes comprise non-return valves to inhibit ingress of drill cuttings into the inlets.
88. A method in accordance with Claims 84 or any claim dependent thereon, wherein the pressure to each inlet at spaced apart intervals is variable, the pressure applied thereto varied in accordance with the pneumatic pressure in the conduit is measured at spaced intervals.
89. A method in accordance with any of Claims 83 to 87, wherein the pressure to each inlet at spaced apart intervals is fixed.
90. A feeding apparatus for loading drill cuttings into a positive pressure conduit, the apparatus comprising a pressure vessel, an inlet, a valve for selectively allowing drill cuttings into the pressure vessel and an outlet leading into a conduit, the outlet comprising a bend therein beneath the pressure vessel characterised in that the bend has a compressed air inlet in the bend for supplying a positive pressure to push the drill cuttings therethrough.
91. A feeding apparatus as claimed in Claim 90, wherein the inlet is directed horizontally, advantageously in line with the conduit.
92. A feeding apparatus as claimed in Claim 90 or 91, further comprising a further valve located between the pressure vessel and the outlet.
93. A feeding apparatus as claimed in Claim 90, 91 or 92, wherein the outlet converges through the bend.
94. A method for loading drill cuttings into a positive pressure conduit, the method comprising the steps of filling a pressure vessel through a valve in an inlet, for selectively allowing drill cuttings into the pressure vessel, applying a pneumatic pressure in the pressure vessel, discharging the pressure vessel through an outlet into a conduit, the outlet comprising a bend beneath the pressure vessel characterised in that the bend has a compressed air inlet in the bend for supplying a positive pressure pushing the drill cuttings through the conduit.
CA2571665A 2004-06-22 2005-06-17 Apparatus and method for moving drill cuttings Active CA2571665C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2637231A CA2637231C (en) 2004-06-22 2005-06-17 Apparatus and method for processing drill cuttings

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/875,083 2004-06-22
US10/875,083 US7195084B2 (en) 2003-03-19 2004-06-22 Systems and methods for storing and handling drill cuttings
PCT/GB2005/050091 WO2005124096A1 (en) 2003-03-19 2005-06-17 Apparatus and method for moving drill cuttings

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2637231A Division CA2637231C (en) 2004-06-22 2005-06-17 Apparatus and method for processing drill cuttings

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CA2571665A1 true CA2571665A1 (en) 2005-12-29
CA2571665C CA2571665C (en) 2010-08-31

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CA2571665A Active CA2571665C (en) 2004-06-22 2005-06-17 Apparatus and method for moving drill cuttings
CA2637231A Active CA2637231C (en) 2004-06-22 2005-06-17 Apparatus and method for processing drill cuttings

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EP (2) EP1766181B1 (en)
AT (1) ATE527432T1 (en)
AU (1) AU2005254794B2 (en)
BR (2) BRPI0511406B1 (en)
CA (2) CA2571665C (en)
EA (2) EA013299B1 (en)
GB (2) GB2428720B (en)
NO (2) NO338221B1 (en)
PL (1) PL2037079T3 (en)

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ATE527432T1 (en) 2011-10-15
EA200801599A1 (en) 2008-10-30
EP2037079B1 (en) 2013-07-03
AU2005254794A1 (en) 2005-12-29
CA2571665C (en) 2010-08-31
EA013456B1 (en) 2010-04-30
GB2428720B (en) 2008-12-03
NO338234B1 (en) 2016-08-08
NO338221B1 (en) 2016-08-08
EP1766181A1 (en) 2007-03-28
NO20160476L (en) 2007-03-07
GB0801728D0 (en) 2008-03-05
EA013299B1 (en) 2010-04-30
CA2637231A1 (en) 2005-12-29
EP1766181B1 (en) 2011-10-05
BRPI0511406B1 (en) 2018-09-25
NO20065950L (en) 2007-03-07
BR122017014864B1 (en) 2018-06-05
PL2037079T3 (en) 2013-12-31
GB2428720A8 (en) 2007-02-20
GB2443363A (en) 2008-04-30
GB0619084D0 (en) 2006-11-08
GB2428720A (en) 2007-02-07
CA2637231C (en) 2011-08-09
AU2005254794B2 (en) 2011-10-20
GB2443363B (en) 2008-12-03
EP2037079A1 (en) 2009-03-18
BRPI0511406A (en) 2007-12-04
GB2428720A9 (en) 2007-02-20
EA200700090A1 (en) 2007-10-26

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