US3658015A - Explosive-proof method and incinerator for burning drill cuttings - Google Patents

Explosive-proof method and incinerator for burning drill cuttings Download PDF

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Publication number
US3658015A
US3658015A US28818A US3658015DA US3658015A US 3658015 A US3658015 A US 3658015A US 28818 A US28818 A US 28818A US 3658015D A US3658015D A US 3658015DA US 3658015 A US3658015 A US 3658015A
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United States
Prior art keywords
cuttings
burning
combustion chamber
incinerator
water
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Expired - Lifetime
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US28818A
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English (en)
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Phil Griffin
Willard C Phillips
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SWACO GEOLOGRAPH Co
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Dresser Industries Inc
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Assigned to SWACO GEOLOGRAPH COMPANY reassignment SWACO GEOLOGRAPH COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: DRESSER INDUSTRIES, INC., A CORP. OF DE
Assigned to SWACO GEOLOGRAPH COMPANY reassignment SWACO GEOLOGRAPH COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: DRESSER INDUSTRIES, INC., A DE CORP.
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    • 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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/005—Waste disposal systems
    • E21B41/0071—Adaptation of flares, e.g. arrangements of flares in offshore installations
    • 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
    • E21B35/00—Methods or apparatus for preventing or extinguishing fires

Definitions

  • the objects of the invention are accomplished, broadly, by the provision of an incinerator which is submerged in a body of water to prevent explosion to the drilling rig or drilling barge. After burning, the cuttings are discharged from the combustion chamber beneath the surface of the water to eliminate sparks in the vicinity of the drilling rig.
  • FIG. 1 is a side elevational view of an incinerator according to the invention mounted on a drilling rig having a water environment;
  • FIG. 2 is an enlarged schematic view, partly in cross section, of the incinerator according to the invention.
  • FIG. 3 is an enlarged schematic view, partly in cross section, of an alternative combustion chamber for the incinerator according to the invention.
  • FIG. 4 is a top plan view, partially in cross section, of one of the inner compartments of the combustion chamber illustrated in F IG. 3.
  • FIG. 1 there is illustrated an offshore drilling barge having a work platform 11 supported off the ocean floor 12 by a plurality of columns 13.
  • the invention contemplates the disposing of pollutants encountered in drilling with floating offshore barges, as well as with drilling barges used in marshy areas or inland lakes.
  • the present invention will also be used in other remote areas, such as the frozen northernmost areas of the world, wherein there is danger of pollution to the ice and snow, and to the water areas associated with such ice and snow.
  • a conventional drilling derrick 14, with its associated draw works, is mounted on the work platform 11 for drilling a well 15 into the earth formations 16 lying beneath the ocean floor 12.
  • a mud pit 20 is connected by way of the mud line .21 and mud pump 22 to a mud hose 23 and swivel 24, such that drilling mud is pumped into the top of the drill pipe 17, down through the length of the drill pipe and is pumped into the bottom of the borehole 15 through the drill bit 18.
  • a portion of the borehole 15 is cased with a cement sheath 19.
  • a mud pipe 25 returns the mud through a shale shaker screen 26 located above the mud pit 20.
  • the mud is pumped down through the drill pipe, shown by the downwardly pointed arrow, and into the bottom of the borehole. Further pumping of the mud causes it to be pumped up, pointing arrow, between the casing 19 and the drill pipe 17, and into the mud return pipe 25. As the drill bit 18 cuts into the earth, the drill cuttings or portions of the rock and earth are carried back to the earths surface via the mud. Upon leaving the mud return line 25, the combined mud and drill cuttings are pumped into the shaker screen 26, the screen being sized to pass the mud back into the mud pit 20 while retaining the drill cuttings of any appreciable size.
  • the process can be repeated over and over again by continuing to pump mud from the mud pit 20 back through the drill pipe as previously explained.
  • the cuttings retained by the shale shaker 26 are then conveyed by a conveyor belt 30 into an accumulation chamber 31, or can be manually transferred, as by a shovel, to the chamber 31, if desired.
  • the chamber 31 is an upper portion of a subsurface furnace 33 which is designed to either be maintained beneath the surface 32 of the water, or alternatively, be filled with the cuttings and then lowered beneath the surface.
  • the furnace 33 is preferably maintained beneath the surface of the water to lessen the change of fire to the drilling rig.
  • a cuttings trap 35 is located immediately beneath the bottom of the fumace'or incinerator 33, being mounted on an endless belt or cable 36 for transport of the trapped cuttings to the work platform 11.
  • samples of the burned cuttings can be tested by personnel working on the platform 11.
  • the testing processes could be automated, if desired, to determine that the cuttings are properly burned.
  • those skilled in the art will recognize that this could be accomplished by causing the belt 36 (and the sampled drill cuttings) to be passed through various automated machines and apparatus located on the platform 11 capable of such analysis.
  • FIG. 2 there is illustrated in greater detail the accumulator 31, the incinerator 33, and various structures intennediate the accumulator and incinerator, as well as the sensors and controls associated therewith.
  • a valve 40 is caused to be opened, thus allowing the cuttings to drop or move into a pressure chamber 41.
  • Pressure chamber 41 is isolated from the combustion chamber 42 of the incinerator 33 by a valve 43.
  • valve 40 is closed and pressurized air is pumped into pressure chamber 41 through the air line 44 connected to the air compresser 45.
  • valve 43 is caused to open, allowing the cuttings to drop or move into the combustion chamber 42.
  • valve 43 is closed and the three-way valve 46 in air line 44 is opened discharging pressure through outlet 47, thus restoring pressure chamber 41 to atmospheric pressure. Valve can then be opened and the pressure chamber 41 again loaded with cuttings, allowing the process to be repeated. It should be appreciated that the valves 40 and 43 can be of the rotary vane type for more continuous operation by a proper maintenance of the pressure within the pressure chamber 41.
  • a basket 50 is attached to the sides of the combustion chamber by the arms 51, the basket 50 being positioned beneath the valve 43 to receive the cuttings from the pressure chamber 41.
  • the mesh size of the basket 50 is selected to be finer than the mesh of the screen of the shale shaker 26 illustrated in FIG. 1, whereby the cuttings will not pass through the basket prematurely.
  • the bottom 52 of the basket is connected to the piston 53 of air cylinder 54 inside the basket control box 57 which in turn is activated by the air pressure line from the air pump 66 connected by the conductor 67 to the control station 65. In operation, the piston 53 is extended to close the bottom of the basket and retracted to release the cuttings from the basket. If it is desired that a basket be used, those in the art will recognize that the bottom may be removed in various other ways, for example, by a pivotal hinging of a single bottom, or by using two or more bottom doors, as with shutters.
  • an alternative embodiment requires no basket. It is contemplated that the apparatus merely makes use of the gravity assisted flow of gases from the top of the combustion chamber 42 to the bottom outlet 56.
  • a fuel pump 60 is mounted on the work platform and is connected through the fuel lines 61 to the plurality of nozzles 62.
  • the fuel used in the combustion chamber could be solid, liquid or gaseous, the preferred embodiment contemplates the use of diesel fuel.
  • a conventional electric starter 63 for each of the nozzles 62 is connected by way of the conductor 64 to the control station 65 located on the work platform 1 1.
  • a heat sensor mounted on the pressure chamber 41 is connected through the conductor 71 to an alarm system 72, for example, a siren or a buzzer. Should the pressure chamber become overheated due to a malfunction of the combustion chamber, the alarm system alerts the drilling personnel to such danger. Additionally, the heat sensor 70 is connected through conductor 73 to the safety valve 74. Upon a sensing of overheating, the valve 74 opens, causing the combustion chamber 42 to flood with water, extinguishing the flame at the nozzles 62 and cooling the interior of the combustion chamber and all of its contents. The sensed overheat condition is also coupled immediately back from the control station by the conductors 75 and 76 to the fuel pump 60 and the air pump 45, respectively, thus stopping all fuel and air mixtures from further entry into the combustion chamber.
  • an alarm system 72 for example, a siren or a buzzer.
  • a heat sensor 77 is mounted on the combustion chamber 42 and is connected by conductor 78 to the fuel pump 60 and air pump 45 to control the air/fuel ratio in order to sustain the combustion chamber at a proper and efficient temperature.
  • a coupling 80 joins two sections of the pressure chamber 41.
  • the entire submerged assembly can easily be retrieved by disconnecting the coupler 80.
  • the two sections of the pressure chamber are again coupled by the coupler 80.
  • Sufficient air pressure is then reestablished in chambers 41 and 42 to remove all water from the combustion chamber 42 and pressure chamber 41.
  • Valve 43 is then closed, electric starter 63 is activated, and fuel oil is pumped into the combustion chamber, thus causing ignition.
  • heat sensor 77 indicates combustion, the process of burning cuttings can again be commenced.
  • Mechanical vibrators or shakers and 86 are mounted on the sides of the pressure chamber 41 and the combustion chamber 42, respectively, each being connected by the conductor 87 to the control station 65. In the event certain types or sizes of drill cuttings show a tendency to stick to the sides of the chambers, the vibrators will cause such cuttings to be released.
  • the cuttings are released from the basket 50, whereupon they fall into the open lower end 56 of the combustion chamber 42.
  • the water part of which forms a hydrostatic head in the outlet 56, quenches the heat of the cuttings. Since the specific gravity of the cuttings is greater than that of water, the pollution free cuttings will settle to the bottom, for example, to the ocean floor.
  • FIG. 3 there is illustrated an alternative embodiment of the submerged combustion chamber 90 for the incinerator 91.
  • a pressure chamber 92 is connected through a valve 93 to the uppermost portion of the combustion chamber 90 in a manner analogous to the manner shown for the chambers 41 and 42 and valve 43 in the embodiment of FIG. 2, except the pressure chamber 92 is off-center, as is described hereinafter.
  • the upper section of the pressure chamber 92 is normally connected to an accumulator such as the accumulator 31 ofFIG. 2.
  • Located within the combustion chamber 90 is a plurality of vertically spaced plates 94, 95, 96, 97, and 98, each of which has a corresponding discharge part 940, 95a, 96a,97a, and 98a, respectively.
  • the discharge parts are staggered such that no two adjacent metal plates have discharge parts lying in the same vertical plane.
  • a rotatable shaft 99 runs down the centerline axis of the incinerator 91, having a gear drive 100 connected to a motor 101 controlled by a motor control 102.
  • the motor is preferably of the variable speed variety to allow flexibility in the retention time for the cuttings at each level within the combustion chamber.
  • the motor can be a rotary torque actuator, such as a reciprocating piston driven rack and pinion device through a cam type overriding clutch.
  • the actuator can be operated by compressed air, wherein a change in air volume causes a change in the rotational speed of the shaft 99.
  • other types of variable speed motors 101 can be used to rotate the shaft 99, and that even a constant speed motor can be used if no flexibility of cutting retention is desired.
  • a leveling and spreading blade 103 and a scraping blade 104 are connected to the shaft 99, the spreading blade being set to pass a given distance above the plate 94, for example, 2 or 3 inches, whereas the scraper blade 104 barely clears the plate 94 as the shaft 99 rotates. Similar sets of spreading blades and scraping blades are vertically spaced along the shaft 99 to provide a similar function at each of the levels of the metal plates 95 98.
  • a fuel nozzle 105 is connected to the inside of the combustion chamber 90 between the steel plates 94 and 95, receiving fuel via fuel line 106 from a station (not shown) above the work platform 11.
  • An air pressure line 107 provides air to the combustion chamber 90 to maintain proper pressure and the desired air for the air/fuel mixture to support combustion, all as explained with respect to the embodiment of FIG. 2.
  • the various sensors, safety and operational features illustrated and described with respect to the embodiment of FIG. 2 are also useful with the embodiment ofFIG. 3.
  • FIG. 4 illustrates in a top plan view, partially in cross section, the arrangement of the lower extention of the pressure chamber 92, the shaft 99, the blades 103 and 104, the metal retention plate 94 and its corresponding discharge part 940. Shown with dotted lines are the scraper blade 108 and the leveling and spreading blade 109 associated with the metal retention plate 95 (not shown) with its discharge part 95a.
  • a position sensor 113 for example, a reed relay is mounted on the work platform 11 responsive to the magnet 112 rotating past the sensor.
  • An electrical conductor 114 connects the sensor 113 to an air compressor 115, which in turn is connected through the air line 116 to the valve 93.
  • a pair of magnets can be used on the shaft 99, one to open the valve 93 and one to close the valve 93.
  • valve 93 is opened and the cuttings dumped onto the plate 94 immediately before the leveling and scraping blade 103 comes into contact with such cuttings as the shaft 99 rotates.
  • the cuttings are released from the pressure chamber 92, through the valve 93, onto the metal plate 94.
  • the blade 103 is caused to move clockwise (in FIG. 4)
  • the cuttings are spread and leveled over the surface of the plate 94.
  • the rotational speed of the shaft 99 is set such that the cuttings remain at each level for approximately 1 minute, or a total retention at the five levels of 5 minutes.
  • the speed of rotation can be varied, as discussed above, to provide different retention times, even different for the different levels if devised.
  • the moisture content of the cuttings is reduced considerably.
  • the scraper blade 104 As the scraper blade 104 comes around, the cuttings are caused to be scraped or dropped through the discharge part 94a onto the metal plate 95 at the next lower vertical level. As the cuttings are being spread and leveled by the blade 109, the nozzle 105 and its associated flame provides the heat for initial start-up, causing ignition of the hydrocarbon content of the cuttings. It has been found that a 1 gallon per hour fuel capacity is adequate for such purposes. After the 1 minute retention, the scraper blade 108 causes the cuttings to be dropped through the discharge part 95a to the next level, metal plate 96. Similar leveling and scraping at the succeeding lower vertical levels causes the burning cuttings to be moved to the plates 97 and 98, thus remaining in the combustion chamber for 5 minutes.
  • the pollutionfree cuttings are discharged through the part 98a and through the open end 110 of the combustion chamber 90. If desired, a spring-load valve (not shown) may be used at the end 110 to prevent water entry if air pressure is lost.
  • combustion chamber 90 is maintained beneath the surface 32 of the water, just as with the embodiment of FIG. 2, to substantially eliminate the danger of explosion. Furthermore, the presence of the infinite supply of water to continually cool the walls of the incinerator eliminates or substantially lessens the need for refractory materials or other linings except as may be used to forestall corrosion or flame abrasion.
  • An explosive-proof apparatus for burning hydrocarbons from drill cuttings on an offshore drilling barge comprising:
  • submerged means for burning said cuttings beneath the surface of the water are submerged means for burning said cuttings beneath the surface of the water.
  • An explosive-proof apparatus for burning hydrocarbons from drill cuttings on an offshore drilling barge comprising:
  • a cuttings incinerator arranged to be submerged beneath the surface of the water
  • An explosive-proof apparatus for burning hydrocarbons from drill cuttings on an offshore barge comprising:
  • the apparatus according to claim 4 including in addition thereto retention means for retaining said cuttings while said cuttings are burning.
  • said retention means comprises a mesh basket with means to empty said basket following the burning completion.
  • said retention means comprises at least one metal plate mounted in said combustion chamber to receive said cuttings from said airpressurized chamber, and includes means for removing said cuttings from said metal plate.
  • said means for removing said cuttings comprises at least one scraper blade mounted on a rotatable shaft in a scraping relationship to said at least one metal plate.
  • said at least one metal plate comprises a plurality of vertically spaced metal plates, each of said plates having a discharge port therein, wherein said ports in adjacent plates lie in different vertical planes, respectively.
  • said means for removing said cuttings comprises a plurality of scrapper blades mounted on a rotatable shaft, at least one of said blades being mounted on said shaft for each of said plurality of metal plates in scraping position thereto.
  • a method for disposing of pollutants in drill cuttings comprising:
  • An incinerator for burning hydrocarbons from drill cuttings on an offshore barge comprising:

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Incineration Of Waste (AREA)
US28818A 1970-04-15 1970-04-15 Explosive-proof method and incinerator for burning drill cuttings Expired - Lifetime US3658015A (en)

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US2881870A 1970-04-15 1970-04-15

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US (1) US3658015A (enExample)
CA (1) CA929035A (enExample)
DE (1) DE2118811A1 (enExample)
FR (1) FR2086078B1 (enExample)
GB (2) GB1353757A (enExample)
NL (1) NL7104875A (enExample)
NO (1) NO132557C (enExample)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3913560A (en) * 1972-08-04 1975-10-21 Aquitaine Petrole Submerged combustion installation
US4313785A (en) * 1979-10-25 1982-02-02 Schellstede Herman J Method and apparatus for treating waste rock cuttings
US4387514A (en) * 1981-04-06 1983-06-14 Dresser Industries, Inc. Method for drying oil well drill cuttings
US4438708A (en) * 1982-08-13 1984-03-27 S-Cubed Complete incineration of waste material
EP0099884A4 (en) * 1982-01-29 1985-07-01 Herman J Schellstede METHOD AND DEVICE FOR TREATING ROCK DEBRIS FROM WELLS.
US4575336A (en) * 1983-07-25 1986-03-11 Eco Industries, Inc. Apparatus for treating oil field wastes containing hydrocarbons
DE3535199A1 (de) * 1984-10-08 1986-04-10 Olav Floroe Ellingsen Verfahren zur wiedergewinnung von oel aus schlamm, der feine inorganische und/oder organische partikel, sowie oel, wasser oder andere verdampfbare fluessigkeiten enthaelt
US4751887A (en) * 1987-09-15 1988-06-21 Environmental Pyrogenics Services, Inc. Treatment of oil field wastes
US5053082A (en) * 1990-02-28 1991-10-01 Conoco Inc. Process and apparatus for cleaning particulate solids
US5080721A (en) * 1990-02-28 1992-01-14 Conoco Inc. Process for cleaning particulate solids
US5107874A (en) * 1990-02-28 1992-04-28 Conoco Inc. Apparatus for cleaning particulate solids
US20150167972A1 (en) * 2013-12-17 2015-06-18 Schlumberger Technology Corporation Real-time burner efficiency control and monitoring
US10920982B2 (en) 2015-09-28 2021-02-16 Schlumberger Technology Corporation Burner monitoring and control systems
US12529310B2 (en) 2016-06-28 2026-01-20 Schlumberger Technology Corporation Well testing systems and methods with mobile monitoring

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513356A1 (fr) * 1981-09-23 1983-03-25 Chaudot Gerard Systeme de securite destine a eliminer tout risque d'entrainement de liquides au nez de torche ou a l'event, lors du torchage ou de la dispersion des gaz associes a la production ou au traitement d'hydrocarbures a terre et en mer
DE3543845A1 (de) * 1985-12-12 1987-06-19 Ruetgerswerke Ag Verfahren zum dekontaminieren von boeden

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US2762364A (en) * 1951-03-23 1956-09-11 Coleman Co Draft starter structure for immersion heaters
US2852418A (en) * 1956-02-20 1958-09-16 Michigan Foundry Supply Compan Method for treating metal borings
US2977255A (en) * 1955-01-24 1961-03-28 Kaiser Aluminium Chem Corp Reclamation method
US3051162A (en) * 1958-12-10 1962-08-28 Harry J Porter Submersible heater
US3125613A (en) * 1964-03-17 Mccartney
US3138150A (en) * 1962-09-11 1964-06-23 Thermal Res & Engineering Corp Submerged hot gas heat exchanger
US3194229A (en) * 1962-06-29 1965-07-13 Donald R Borgeson Portable submersible swimming pool heater
US3295478A (en) * 1963-12-02 1967-01-03 Broadway Res And Dev Corp Incineration of liquid wastes

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125613A (en) * 1964-03-17 Mccartney
US2762364A (en) * 1951-03-23 1956-09-11 Coleman Co Draft starter structure for immersion heaters
US2977255A (en) * 1955-01-24 1961-03-28 Kaiser Aluminium Chem Corp Reclamation method
US2852418A (en) * 1956-02-20 1958-09-16 Michigan Foundry Supply Compan Method for treating metal borings
US3051162A (en) * 1958-12-10 1962-08-28 Harry J Porter Submersible heater
US3194229A (en) * 1962-06-29 1965-07-13 Donald R Borgeson Portable submersible swimming pool heater
US3138150A (en) * 1962-09-11 1964-06-23 Thermal Res & Engineering Corp Submerged hot gas heat exchanger
US3295478A (en) * 1963-12-02 1967-01-03 Broadway Res And Dev Corp Incineration of liquid wastes

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3913560A (en) * 1972-08-04 1975-10-21 Aquitaine Petrole Submerged combustion installation
US4313785A (en) * 1979-10-25 1982-02-02 Schellstede Herman J Method and apparatus for treating waste rock cuttings
US4387514A (en) * 1981-04-06 1983-06-14 Dresser Industries, Inc. Method for drying oil well drill cuttings
EP0099884A4 (en) * 1982-01-29 1985-07-01 Herman J Schellstede METHOD AND DEVICE FOR TREATING ROCK DEBRIS FROM WELLS.
US4438708A (en) * 1982-08-13 1984-03-27 S-Cubed Complete incineration of waste material
US4575336A (en) * 1983-07-25 1986-03-11 Eco Industries, Inc. Apparatus for treating oil field wastes containing hydrocarbons
DE3535199A1 (de) * 1984-10-08 1986-04-10 Olav Floroe Ellingsen Verfahren zur wiedergewinnung von oel aus schlamm, der feine inorganische und/oder organische partikel, sowie oel, wasser oder andere verdampfbare fluessigkeiten enthaelt
US4751887A (en) * 1987-09-15 1988-06-21 Environmental Pyrogenics Services, Inc. Treatment of oil field wastes
US5053082A (en) * 1990-02-28 1991-10-01 Conoco Inc. Process and apparatus for cleaning particulate solids
US5080721A (en) * 1990-02-28 1992-01-14 Conoco Inc. Process for cleaning particulate solids
US5107874A (en) * 1990-02-28 1992-04-28 Conoco Inc. Apparatus for cleaning particulate solids
US20150167972A1 (en) * 2013-12-17 2015-06-18 Schlumberger Technology Corporation Real-time burner efficiency control and monitoring
US10041672B2 (en) * 2013-12-17 2018-08-07 Schlumberger Technology Corporation Real-time burner efficiency control and monitoring
US10920982B2 (en) 2015-09-28 2021-02-16 Schlumberger Technology Corporation Burner monitoring and control systems
US12529310B2 (en) 2016-06-28 2026-01-20 Schlumberger Technology Corporation Well testing systems and methods with mobile monitoring

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Publication number Publication date
GB1353758A (en) 1974-05-22
CA929035A (en) 1973-06-26
NO132557B (enExample) 1975-08-18
FR2086078B1 (enExample) 1974-04-05
NO132557C (enExample) 1975-11-26
GB1353757A (en) 1974-05-22
DE2118811A1 (de) 1971-10-28
FR2086078A1 (enExample) 1971-12-31
NL7104875A (enExample) 1971-10-19

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Effective date: 19871111

Owner name: SWACO GEOLOGRAPH COMPANY, HOUSTON, TEXAS, A TX GEN

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