WO2011063463A1 - Appareil et procede de lavage de deblais de forage - Google Patents

Appareil et procede de lavage de deblais de forage Download PDF

Info

Publication number
WO2011063463A1
WO2011063463A1 PCT/AU2010/001589 AU2010001589W WO2011063463A1 WO 2011063463 A1 WO2011063463 A1 WO 2011063463A1 AU 2010001589 W AU2010001589 W AU 2010001589W WO 2011063463 A1 WO2011063463 A1 WO 2011063463A1
Authority
WO
WIPO (PCT)
Prior art keywords
wash
cutting
tank
mud
cyclone separator
Prior art date
Application number
PCT/AU2010/001589
Other languages
English (en)
Inventor
Mark Krohn
Original Assignee
Supavac Pty Ltd
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 AU2009905831A external-priority patent/AU2009905831A0/en
Application filed by Supavac Pty Ltd filed Critical Supavac Pty Ltd
Priority to AU2010324537A priority Critical patent/AU2010324537B2/en
Priority to EP10832425.2A priority patent/EP2506977A4/fr
Priority to US13/512,853 priority patent/US20120318583A1/en
Priority to CN2010800541286A priority patent/CN102791379A/zh
Publication of WO2011063463A1 publication Critical patent/WO2011063463A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2433—Discharge mechanisms for floating particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments
    • B01D21/2461—Positive-displacement pumps; Screw feeders; Trough conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • B01D21/267—Separation of sediment aided by centrifugal force or centripetal force by using a cyclone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • B04C2009/004—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with internal filters, in the cyclone chamber or in the vortex finder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks

Definitions

  • This invention relates to a cuttings wash apparatus and method.
  • a wash tank having side walls at least the lower portions of which converge to an inclined lower floor and containing an air agitated wash solution including a surfactant;
  • a skimmer operable to remove a raft formed at the surface of the wash solution including emulsified oil based mud and slurry fines floated by said agitating; an auger casing below said inclined floor and opening into said tank at a lower portion of the floor, the auger casing extending upward of a top of the wash tank and having an discharge outlet toward its upper end; and
  • the wash tank may be of a hopper or hod-like configuration.
  • the wash tank may have a generally rectangular upper portion having a pair of side walls that converge downward and are closed together by the inclined floor forming both front and lower closure for the tank.
  • the rear of the tank may have an end wall which is substantially vertical or which converges with the opening into the inclined floor at its lower end to guide washed cuttings into the opening.
  • the wash solution will be selected according to the nature of the continuous phase entraining the drill cuttings.
  • OBM oil based muds
  • the mud residue requires the use of a water wash containing surfactants to clean the bulk of the mud residue from the cuttings.
  • the water wash may be made up with a surfactant composition selected from cationic surfactants selected to wet oily clay particles.
  • the water wash may be selected to work in salt water.
  • injection/surfactant combination may be selected in order to promote froth flotation of especially clay minerals cleaned from the drill cuttings.
  • the auger may be a shaftless auger.
  • the auger is preferably driven from its upper end.
  • the cyclone separator may be mounted directly to the wash tank or its supporting structure in order that it may discharge separated cuttings directly into the wash tank.
  • the cyclone separator may be internally screened to separate residual particulates from the mud overflow. This mud is directed directly back to mud tanks for re-blending and re use.
  • the inlet to the cyclone separator may be a tangentially directed inlet directing flow in the direction of rotation of the cyclone action. The tangential flow may impinge on a curved screen whereby the entrained cuttings are screened to the cyclone underflow and the spent mud directed to the cyclone overflow.
  • the cyclone separator may be selected to match the particular charge characteristics of the slurry delivery system.
  • the slurry delivery system may involve the use of a slurry pump such as that described in WO 2006/037186.
  • the pump may consist of a pressure vessel, an inlet nozzle, and an ejector nozzle by which vacuum and pressure are applied, and an outlet nozzle, in this case connected via a discharge line connected to the inlet of the cyclone separator line.
  • the inlet and outlet nozzles are selectively closed by interconnected knife gate valves, operated in tandem by a pneumatic cylinder whereby when one valve is closed, the other is open, and vice-versa.
  • An ejector valve located in the ejector nozzle alternately creates vacuum and generate air flow through the vessel. The air from the ejector may be introduced into the discharge line after closure of the outlet valve, if the discharge line requires the boost.
  • Drilling mud entraining cuttings may be captured by the pump via either a gravity feed from a hopper or alternatively under vacuum.
  • the pump may deliver the slurry in a pump-and-fill cycle.
  • the cyclone separator is preferably selected as to static capacity and throughput to match the discharge rate of the pump.
  • the throughput of the cyclone be in the region of 24 tonnes per hour.
  • Cuttings in the wash tank pass under gravity along the inclined floor and into the path of the auger through the lower opening.
  • the cuttings are exposed to agitation which enhances the wash effect.
  • the air agitation may be provided by air injection a bottom portion of the wash tank from a compressed air supply.
  • the wash solution may be recycled and the recycled wash solution and air combined and injected along the inclined floor to provide the agitation.
  • Air bubbles from the agitation entrains emulsified oil based mud and other pollutants to form a raft at the surface of the wash solution to be removed by a skimmer.
  • the skimmer may comprise an overflow system whereby floating sludge and wash liquid is delivered to separator means whereby the sludge may be stripped and the polished wash liquid returned by pump to the wash tank.
  • the overflow may pass into a tank across a stripper belt trapping sludge on top of the belt and allowing the polished wash liquid to pass through the belt.
  • the belt may be a one-pass disposable web or a strippable recirculating web.
  • the recycled wash solution may again be entrained with air and injected along the inclined floor to provide the agitation.
  • Drag through losses of the wash liquid to either the sludge removal or auger delivery of washed cuttings may be made up by any suitable means. For example, making up may be done in the sludge separator or the wash tank
  • Washed cuttings may be slowly transported up the auger. This dewaters the cuttings allowing solution to drain back into the main body of the tank.
  • the cuttings may be delivered from the auger outlet either directly or indirectly to a dryer assembly.
  • the dryer may receive cuttings as a uniform continuous feed at a controlled rate because the cyclone and wash actions smooth out the pulsed delivery from the preferred pump.
  • the dryer's operational performance band is preferably honed allowing optimum performance to be achieved and maintained throughout the entire operation.
  • Cuttings may now be discharged from the dryer and depending on
  • FIG. 1 is a side view of apparatus in accordance with the present invention.
  • FIG. 2 is a front view of the general arrangement of a pump for use with the apparatus of FIG. 1 ;
  • FIG. 3 is a side view of the pump of FIG. 2.
  • a cuttings wash apparatus including a supporting, crane hoistable frame 10 supporting a wash tank 1 1 and auger 12 assembly.
  • the top of the tank 1 1 is provided with an overflow skimmer assembly 13.
  • a pump assembly 14 Remote from the supporting frame 10 there is provided a pump assembly 14 as illustrated in Figs. 3 and 4.
  • the wash tank 1 1 has a pair of opposed side walls 15 that converge to meet an inclined floor portion 16 which forms both front and bottom wall of the tank 1 1 .
  • An inclined rear wall 17 closes the back of the tank. The cuttings settle passing across the inclined floor portion 16 to a lower opening 20.
  • the lower opening 20 admits the cuttings to an auger housing 21 mounted beneath the floor portion 16 and extending to an upper portion 22 above the level of the tank 1 1 top.
  • the auger housing 21 contains an auger 23 which is driven from its upper end by a motor and gearbox assembly 24.
  • the wash liquor 25 includes a cationic surfactant/flotation agent which causes the oil component of OBM to float as a raft 26 with other contaminants to be skimmed off by the overflow skimmer assembly 13.
  • the surfactant composition of this example is capable of use in salt water and comprises 220 ppm Wildcat Concentrate (Wildcat Chemicals Australia Pty Ltd) of notional composition:
  • a wash recycle tank 18 takes wash liquid and sludge from the overflow skimmer 13 and separates the sludge to waste, entrains air and pumps the polished wash liquid via pump 19 to the tank 1 1 .
  • Part of the recycled liquid is returned via upper port 28 to cuttings passing into the tank and part is directed through lower port 29 to a pair of spaced, longitudinal agitator bars 44 each having a plurality of approximately 1 .0mm agitator holes. Wash liquid and entrained air projected from the agitator holes agitates the cuttings passing down the tank floor 6 to provide agitation, wash enhancement and flotation raft formation. Further agitation and froth flotation action is provided by air injection through port 39 to a pair of spaced, longitudinal injection bars 45 each having a plurality of approximately 0.2mm air injection holes.
  • a cyclone separator 27 comprises a cylindrical turret having a tangential slurry inlet 30 through which slurry passes from the slurry pump 14 to impinge on a curved screen, allowing cuttings to drop into the tank 1 1 while the mud passes centrifugally about the turret to a mud exit 31 to reclamation and blending.
  • the pump assembly has a pallet frame assembly 43 and may be moved by forklift.
  • Washed cuttings are slowly transported up the auger 23 which dewaters the cuttings allowing solution to drain back into the main body of the tank 1 1 .
  • the cuttings are then delivered directly into a dryer assembly (not shown) via gravity outlet 38 which now receives a uniform continuous feed at a controlled rate.
  • the dryer's operational performance band has been honed allowing optimum
  • Cuttings are now discharged from the dryer assembly 13 and depending on environmental constraints can be returned to the ocean floor or alternatively transported back to shore for further processing.
  • the main objectives of this system are:

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Cyclones (AREA)
  • Treatment Of Sludge (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Abstract

L'invention concerne un appareil de lavage de déblais de forage comprenant un réservoir de lavage (11) doté de parois latérales (15) qui convergent vers un plancher inférieur incliné (16), et contenant une solution de lavage agitée par de l'air qui comprend un tensioactif. Un séparateur cyclone (27) reçoit de la boue à base d'huile et de la boue contenant des déblais via une entrée (30), et fait avancer la boue vers une sortie (31) et un composant riche en déblais vers le réservoir de lavage (11). Un écrémeur (13) élimine le trop-plein de lavage et la boue, et un radeau de boue et de fines de bouillie est amené à flotter par agitation, et les fait passer vers un séparateur (18). Le liquide de lavage séparé est aéré et renvoyé par une pompe (19) vers des points d'injection (28, 29) pour recycler l'eau de lavage et produire une agitation. Une tarière (23) fonctionne dans un tubage (21) ouvrant dans le réservoir (11) et s'étendant vers le haut de ce dernier, et comprenant une ouverture de décharge d'extrémité supérieure (38). De l'air supplémentaire d'aération et d'agitation est injecté via des barres d'injection d'air (45).
PCT/AU2010/001589 2009-11-30 2010-11-27 Appareil et procede de lavage de deblais de forage WO2011063463A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2010324537A AU2010324537B2 (en) 2009-11-30 2010-11-27 Cuttings wash apparatus and method
EP10832425.2A EP2506977A4 (fr) 2009-11-30 2010-11-27 Appareil et procede de lavage de deblais de forage
US13/512,853 US20120318583A1 (en) 2009-11-30 2010-11-27 Cutting wash apparatus and method
CN2010800541286A CN102791379A (zh) 2009-11-30 2010-11-27 切割体清洗设备和方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2009905831A AU2009905831A0 (en) 2009-11-30 Cuttings wash apparatus and method
AU2009905831 2009-11-30

Publications (1)

Publication Number Publication Date
WO2011063463A1 true WO2011063463A1 (fr) 2011-06-03

Family

ID=44065742

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2010/001589 WO2011063463A1 (fr) 2009-11-30 2010-11-27 Appareil et procede de lavage de deblais de forage

Country Status (5)

Country Link
US (1) US20120318583A1 (fr)
EP (1) EP2506977A4 (fr)
CN (1) CN102791379A (fr)
AU (1) AU2010324537B2 (fr)
WO (1) WO2011063463A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9587410B2 (en) 2006-06-19 2017-03-07 Pentair Water Pool And Spa, Inc. Pool cleaner debris bag
US9714518B2 (en) 2015-01-14 2017-07-25 Pentair Water Pool And Spa, Inc. Debris bag with detachable collar
US9745766B2 (en) 2010-05-14 2017-08-29 Pentair Water Pool And Spa, Inc. Biodegradable disposable debris bag
CN113718885A (zh) * 2021-09-30 2021-11-30 江苏航运职业技术学院 一种大型耙吸船艏吹输泥分叉管头装驳系统及施工方法
WO2022238693A1 (fr) 2021-05-11 2022-11-17 Total Waste Management Alliance Limited Appareil et procédé pour le traitement de déblais de forage

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CN104712273B (zh) * 2015-03-31 2017-03-29 中石化胜利石油工程有限公司渤海钻井总公司 钻井废弃泥浆一体化处理系统
CN105457353B (zh) * 2016-01-05 2018-05-22 中国恩菲工程技术有限公司 固液分离装置
US10751654B1 (en) * 2017-12-21 2020-08-25 Del Corporation Flow back separation system and method
US10773188B1 (en) * 2017-12-21 2020-09-15 Del Corporation Air drilling solids control system and method
CN110508405B (zh) * 2019-09-29 2021-08-06 临沂正祥建材有限公司 一种黄铜矿选矿用多级沉淀池

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9587410B2 (en) 2006-06-19 2017-03-07 Pentair Water Pool And Spa, Inc. Pool cleaner debris bag
US9745766B2 (en) 2010-05-14 2017-08-29 Pentair Water Pool And Spa, Inc. Biodegradable disposable debris bag
US9714518B2 (en) 2015-01-14 2017-07-25 Pentair Water Pool And Spa, Inc. Debris bag with detachable collar
WO2022238693A1 (fr) 2021-05-11 2022-11-17 Total Waste Management Alliance Limited Appareil et procédé pour le traitement de déblais de forage
CN113718885A (zh) * 2021-09-30 2021-11-30 江苏航运职业技术学院 一种大型耙吸船艏吹输泥分叉管头装驳系统及施工方法

Also Published As

Publication number Publication date
EP2506977A4 (fr) 2014-12-10
AU2010324537B2 (en) 2015-08-27
CN102791379A (zh) 2012-11-21
EP2506977A1 (fr) 2012-10-10
AU2010324537A1 (en) 2012-06-07
US20120318583A1 (en) 2012-12-20

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