WO2009096798A1 - An apparatus and method for filling and emptying a drill cuttings receptacle - Google Patents

An apparatus and method for filling and emptying a drill cuttings receptacle Download PDF

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Publication number
WO2009096798A1
WO2009096798A1 PCT/NO2009/000033 NO2009000033W WO2009096798A1 WO 2009096798 A1 WO2009096798 A1 WO 2009096798A1 NO 2009000033 W NO2009000033 W NO 2009000033W WO 2009096798 A1 WO2009096798 A1 WO 2009096798A1
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WO
WIPO (PCT)
Prior art keywords
conduit
end portion
airflow
recess
mass transfer
Prior art date
Application number
PCT/NO2009/000033
Other languages
French (fr)
Inventor
Arne Incoronato
Original Assignee
Onsite Treatment Technologies 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
Application filed by Onsite Treatment Technologies As filed Critical Onsite Treatment Technologies As
Publication of WO2009096798A1 publication Critical patent/WO2009096798A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/40—Feeding or discharging devices
    • B65G53/42—Nozzles
    • 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

Definitions

  • the present invention relates to an apparatus and a method for filling and emptying a drill cuttings receptacle. More particularly it concerns a mass transfer device including an airflow-generating device being connected to a conduit provided with a first end portion and a second end portion, the airflow-generating device being arranged for producing an airflow from one of the conduit end portions to the other of the conduit end portions, the airflow being sufficient to move drill cuttings into and through the conduit.
  • drilling rig In connection with drilling for oil and gas offshore and onshore, large amounts of drill residue are produced, which must be stored intermittently on the drilling rig or installation, hereafter called the drilling rig.
  • a discharging device for use in feeding drill cuttings from a line wherein the drill cuttings are directed by 5 means of an airflow to a receptacle such as a cuttings container or a big bag.
  • the discharging device is connected to an arm movable in the horizontal and vertical planes and at the same time telescopically displaceable. The arm thus provides a much-improved flexibility regarding the positioningo of the cuttings receptacles on the drilling rig.
  • the drill cuttings in the receptacles must generally be brought to authorised processing plants for cleaning and subsequent disposal.
  • Such moving operations are demanding on resources such as lifting equipment and personnel at the same time as the moving operations represent a considerable safety risk particularly to deck personnel being directly involved in the moving operations.
  • Studies have shown that ao container being moved from a storage, on board a vessel, on board a drilling rig and onshore again goes through all of 14 movements .
  • the object of the invention is to remedy or reduce at least one of the prior art drawbacks . o
  • the object is achieved by features given in the below description and in the following Claims .
  • an airflow-generating device connected to a conduit provided with a first end portion and a second end portion, where the airflow-generating device is arranged for producing an airflow from one of the conduit end portions to the other conduit end portion, and where the airflow is sufficient to move drill cuttings into and through the conduit, characterised in that at least one of the conduit end portions is provided with at least one recess .
  • the purpose of the recess is to be able to maintain an airflow through the conduit even if the suction portion of the conduit is led some distance down into the mass of drill cuttings .
  • the at least one recess is formed by a non-plane end surface.
  • non-plane end surface is, in this context meant that if the end portion of the conduit is abutting a plane surface, the contact between the plane surface and the end portion of the conduit will be discontinuous.
  • the at least one recess is a slot.
  • the size of the recess is in one preferred embodiment adjustable.
  • the cross-section of the end portion being provided with at least one recess is formed as a non-circular cross-section.
  • the non-circular cross-section includes an essentially right-angled corner. The purpose of the non-circular cross-section is to be able to move the end portion as far as possible into the corner portion of such as a cuttings receptacle and thereby catch practically all of the material in the container. The need for the operator to loosen material having fastened in the container corner is thereby avoided.
  • At least the discharge portion of the con- duit is provided with a larger dimension then a portion of the conduit between the end portions of the conduit.
  • the conduit is fastened to an arm, which is movable in the horizontal and vertical planes.
  • the conduit is fastened to the movable arm shown in Norwegian Patent NO 317712.
  • a conduit provided with an end portion of the present invention replaces the discharging device shown in said patent publication.
  • the arm is in one embodiment provided with a telescopi- cally displaceable end portion.
  • a method for transfer of drill cuttings to or from a receptacle the transfer being provided by a conduit connected to an airflow-generating device producing an airflow sufficient to suck the drill cuttings into and through the conduit, characterised by the conduit being provided with an end portion including at least one recess in the end portion of the mantle.
  • Fig. 1 shows a portion of a mass transfer device of the invention, where a line extends from an arm and where the line end portion is provided with a recess, which is partly submerged in drill cuttings;
  • Fig. 2 shows in larger scale details of the mass transfer device line, where the line end portion is provided with a sliding sleeve positioned in an upper position wherein the effective size of the line recess is at its maximum;
  • Fig. 3 shows the same as in figure 2, but where the sliding sleeve is in a lower position where the effective size of the line recess is at its minimum.
  • the end portion, which is covered by the sleeve is for illustration reasons shown in dotted line;
  • Fig. 4 shows the same as in figure 2, but where the line end portion is alternatively shaped.
  • the number 1 indicates a portion of a mass transfer device where a line 3 extends from an arm 5, which is movable in both the horizontal and vertical planes.
  • the line 3 is in fluid communication with an airflow- generating device (not shown) which produces an airflow into or out of the end portion 3' of the line 3. Whether air flows in through or out from the end portion 3' of the line 3 is controlled in a way known per se.
  • the line 3 is fastened to a mounting bracket 15 known per se which is provided to be able to be pivoted relative to the arm 5 longitudinal axis by means of a cylinder.
  • a mounting bracket 15 known per se which is provided to be able to be pivoted relative to the arm 5 longitudinal axis by means of a cylinder.
  • the end portion 3' of the line 3 is provided with a recess 4 formed by the production of a non-plane cross-sectional surface of the end portion 3' of the line 3.
  • a non-plane end surface is, in this context meant that if the end portion 3' of the line 3 is abutting a plane surface, the contact between the plane surface and the end portion 3' of the line 3 will be discontinuous.
  • the end portion 3' of the line 3 is led some distance down into the drill cuttings 9, but not further than having a part of the recess 4 extending above the drill cuttings 9. Air is thereby allowed to flow in through the recess 4 and into the line 3. Vacuum forming in the line 3 with reduced airflow speed and drill cuttings movement as a result is thereby avoided.
  • FIG. 2 and 3 is shown a sliding sleeve 11 surrounding a lower portion of the line 3.
  • the sliding sleeve 11 is shown in upper and lower positions respectively. With the sliding sleeve 11 in the upper position, as shown in figure 2, the whole of the recess 4 is exposed. With the sliding sleeve 11 in the lower position, as shown in figure 3 essentially the whole of the recess 4 is blocked as the sliding sleeve 11 covers the recess 4.
  • FIG 4 is shown an alternative embodiment of the end portion 3' of the line 3, where the at least one recess is formed by multiple openings or slits 4' .
  • the end portion 3' will have a plane end surface.
  • the sliding sleeve 11 is arranged to be able to be moved steplessly or stepwise along the line 3.
  • a person skilled in the art will be able to solve this in many ways.
  • a stepless movement of the sleeve 11 may for example be achieved by means of a threaded connection (not shown) between the outside of the line 3 and the inside of the sleeve 11.
  • displacement of the sleeve 11 may for example be achieved by means of a cylinder device (not shown) .
  • the sleeve 11 has turned out to be particularly useful when only a relatively thin layer of drill cuttings 9 remains to be emptied from the container 7. To achieve an as powerful as possible airflow adjacent the end portion 3' of the line 3, and not in an upper portion of the recess 4, 4' it is very advantageous to adjust the effective opening (s) 4, 4' by means of the sleeve 11.
  • a slide valve 13 known per se is placed in the pipe 3 spaced from the end portion 3' .
  • mass such as drill cuttings may also be filled into the container 7 by means of the mass transfer device 1.
  • the present invention therefore provides a mass transfer device 1 which may be able to fill and empty a container 7 with/of such as drill cuttings 9 in an efficient way, where the operation may take place without personnel needing to come into contact with the filling/emptying line 3 and with- out the need for moving for example the container 7 wherein the mass 9 is.
  • This entails great advantages regarding both efficiency and safety.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

A mass transfer device (1) including an airflow-generating device connected to a conduit (3), which is provided with a first end portion (3') and a second end portion, where the airflow-generating device is provided to be able to produce an airflow from one of the conduit (3) end portions (3') to the other of the conduit (3) end portions, where the airflow is sufficient to move drill cuttings into and through the conduit (3), and where at least one of the conduit (3) end portions (3') is provided with at least one recess (4). A method for transfer of drill cuttings by means of the mass transfer device (1) is also disclosed.

Description

AN APPARATUS AND METHOD FOR FILLING AND EMPTYING A DRILL CUTTINGS RECEPTACLE.
The present invention relates to an apparatus and a method for filling and emptying a drill cuttings receptacle. More particularly it concerns a mass transfer device including an airflow-generating device being connected to a conduit provided with a first end portion and a second end portion, the airflow-generating device being arranged for producing an airflow from one of the conduit end portions to the other of the conduit end portions, the airflow being sufficient to move drill cuttings into and through the conduit.
In connection with drilling for oil and gas offshore and onshore, large amounts of drill residue are produced, which must be stored intermittently on the drilling rig or installation, hereafter called the drilling rig.
A person skilled in the art will recognise that as borehole fragments, so-called drill cuttings, come up from the bore, the mass from the bore is screened to be able to separate parts of the liquid and the drill cuttings fines from the coarser solids of the drill cuttings. The separated liquid and the fines are led back to the bore and utilised in the further drilling operation, while the separated coarse solids are led to an intermittent storage in collection receptacles such as so-called cuttings containers or other suitable re- ceptacles such as, but not limited to, so-called "big bags". In Norwegian Patent NO 317712, appurtenant to the present applicant, and which is hereby incorporated fully herein, is disclosed a discharging device for use in feeding drill cuttings from a line wherein the drill cuttings are directed by 5 means of an airflow to a receptacle such as a cuttings container or a big bag. The discharging device is connected to an arm movable in the horizontal and vertical planes and at the same time telescopically displaceable. The arm thus provides a much-improved flexibility regarding the positioningo of the cuttings receptacles on the drilling rig.
The drill cuttings in the receptacles must generally be brought to authorised processing plants for cleaning and subsequent disposal. Currently it is common to hoist the cuttings receptacles on board transport vessels bringing thes drill cuttings onshore. Such moving operations are demanding on resources such as lifting equipment and personnel at the same time as the moving operations represent a considerable safety risk particularly to deck personnel being directly involved in the moving operations. Studies have shown that ao container being moved from a storage, on board a vessel, on board a drilling rig and onshore again goes through all of 14 movements .
Even if the device according to NO 317712 is functioning very satisfactorily in connection with filling of such as drill5 cuttings into containers, it does not solve the problem related to handling of the drill cuttings after they have been placed in said exemplified containers on a drilling rig.
The object of the invention is to remedy or reduce at least one of the prior art drawbacks . o The object is achieved by features given in the below description and in the following Claims . In a first aspect of the present invention an airflow- generating device connected to a conduit provided with a first end portion and a second end portion, where the airflow-generating device is arranged for producing an airflow from one of the conduit end portions to the other conduit end portion, and where the airflow is sufficient to move drill cuttings into and through the conduit, characterised in that at least one of the conduit end portions is provided with at least one recess .
The purpose of the recess is to be able to maintain an airflow through the conduit even if the suction portion of the conduit is led some distance down into the mass of drill cuttings .
In a preferred embodiment the at least one recess is formed by a non-plane end surface.
By a non-plane end surface is, in this context meant that if the end portion of the conduit is abutting a plane surface, the contact between the plane surface and the end portion of the conduit will be discontinuous.
In one embodiment the at least one recess is a slot.
To be able to optimise the size of the at least one recess, the size of the recess is in one preferred embodiment adjustable.
In one embodiment the cross-section of the end portion being provided with at least one recess is formed as a non-circular cross-section. In a preferred embodiment the non-circular cross-section includes an essentially right-angled corner. The purpose of the non-circular cross-section is to be able to move the end portion as far as possible into the corner portion of such as a cuttings receptacle and thereby catch practically all of the material in the container. The need for the operator to loosen material having fastened in the container corner is thereby avoided.
In one embodiment at least the discharge portion of the con- duit is provided with a larger dimension then a portion of the conduit between the end portions of the conduit. This has the advantage that the airflow speed, and thereby the speed of the matter being carried by the airflow, will be somewhat reduced relative to the speed of the airflow in the conduit between the end portions of the conduit.
Advantageously the conduit is fastened to an arm, which is movable in the horizontal and vertical planes. In a preferred embodiment the conduit is fastened to the movable arm shown in Norwegian Patent NO 317712. In an embodiment a conduit provided with an end portion of the present invention replaces the discharging device shown in said patent publication.
To increase the flexibility of the mass transfer device further, the arm is in one embodiment provided with a telescopi- cally displaceable end portion.
In a second aspect of the present invention a method is provided for transfer of drill cuttings to or from a receptacle, the transfer being provided by a conduit connected to an airflow-generating device producing an airflow sufficient to suck the drill cuttings into and through the conduit, characterised by the conduit being provided with an end portion including at least one recess in the end portion of the mantle.
In the following is described an example of a preferred embodiment which is illustrated in the accompanying drawings in which: Fig. 1 shows a portion of a mass transfer device of the invention, where a line extends from an arm and where the line end portion is provided with a recess, which is partly submerged in drill cuttings;
Fig. 2 shows in larger scale details of the mass transfer device line, where the line end portion is provided with a sliding sleeve positioned in an upper position wherein the effective size of the line recess is at its maximum;
Fig. 3 shows the same as in figure 2, but where the sliding sleeve is in a lower position where the effective size of the line recess is at its minimum. The end portion, which is covered by the sleeve is for illustration reasons shown in dotted line; and
Fig. 4 shows the same as in figure 2, but where the line end portion is alternatively shaped.
In the figures the number 1 indicates a portion of a mass transfer device where a line 3 extends from an arm 5, which is movable in both the horizontal and vertical planes.
The line 3 is in fluid communication with an airflow- generating device (not shown) which produces an airflow into or out of the end portion 3' of the line 3. Whether air flows in through or out from the end portion 3' of the line 3 is controlled in a way known per se.
The line 3 is fastened to a mounting bracket 15 known per se which is provided to be able to be pivoted relative to the arm 5 longitudinal axis by means of a cylinder. A person skilled in the art will recognise that the line 3 must be provided to tolerate the angular change produced in the line 3 as a result of rotation of the mounting bracket 15. The end portion 3' of the line 3 is provided with a recess 4 formed by the production of a non-plane cross-sectional surface of the end portion 3' of the line 3. By a non-plane end surface is, in this context meant that if the end portion 3' of the line 3 is abutting a plane surface, the contact between the plane surface and the end portion 3' of the line 3 will be discontinuous.
It is to be understood that the portion of the line 3 extending downwards from the arm will normally be longer than what is, for practical reasons, shown in figures 2, 3 and 4.
In figure 1 a portion of the line 3 extends down into a container 7 containing essentially coarse drill cuttings particles 9.
The end portion 3' of the line 3 is led some distance down into the drill cuttings 9, but not further than having a part of the recess 4 extending above the drill cuttings 9. Air is thereby allowed to flow in through the recess 4 and into the line 3. Vacuum forming in the line 3 with reduced airflow speed and drill cuttings movement as a result is thereby avoided.
In figures 2 and 3 is shown a sliding sleeve 11 surrounding a lower portion of the line 3. In figures 2 and 3 the sliding sleeve 11 is shown in upper and lower positions respectively. With the sliding sleeve 11 in the upper position, as shown in figure 2, the whole of the recess 4 is exposed. With the sliding sleeve 11 in the lower position, as shown in figure 3 essentially the whole of the recess 4 is blocked as the sliding sleeve 11 covers the recess 4.
In figure 4 is shown an alternative embodiment of the end portion 3' of the line 3, where the at least one recess is formed by multiple openings or slits 4' . Thus in this embodiment the end portion 3' will have a plane end surface.
It is to be understood that the sliding sleeve 11 is arranged to be able to be moved steplessly or stepwise along the line 3. A person skilled in the art will be able to solve this in many ways. A stepless movement of the sleeve 11 may for example be achieved by means of a threaded connection (not shown) between the outside of the line 3 and the inside of the sleeve 11. In another embodiment displacement of the sleeve 11 may for example be achieved by means of a cylinder device (not shown) .
The sleeve 11 has turned out to be particularly useful when only a relatively thin layer of drill cuttings 9 remains to be emptied from the container 7. To achieve an as powerful as possible airflow adjacent the end portion 3' of the line 3, and not in an upper portion of the recess 4, 4' it is very advantageous to adjust the effective opening (s) 4, 4' by means of the sleeve 11.
To be able to control the flow of air being led through the end portion 3' of the line 3 a slide valve 13 known per se is placed in the pipe 3 spaced from the end portion 3' .
By reversing the airflow in the line 3 by means known per se, mass such as drill cuttings may also be filled into the container 7 by means of the mass transfer device 1.
The present invention therefore provides a mass transfer device 1 which may be able to fill and empty a container 7 with/of such as drill cuttings 9 in an efficient way, where the operation may take place without personnel needing to come into contact with the filling/emptying line 3 and with- out the need for moving for example the container 7 wherein the mass 9 is. This entails great advantages regarding both efficiency and safety.

Claims

C L A I M S
1. A mass transfer device (1) including an airflow- . generating device which is connected to a conduit (3) being provided with a first end portion (3') and a second end portion, where the airflow-generating device being arranged for producing an airflow from one of the conduit (3) end portions (3') to the other of the conduit (3) end portions, where the airflow is sufficient to move drill cuttings into and through theo conduit (3 ) , c h a r a c t e r i s e d i n that at least one of the conduit (3) end portions (3') is provided with at least one recess (4, 4') and with a control device (11) arranged for being able to control the effective size of the recess (4, 4') - s
2. A mass transfer device according to claim 1, wherein the at least one recess (4) is formed by means of a non-plane end surface .
3. A mass transfer device according to claim 1 or 2, wherein the at least one recess (4') is formed by0 means of a slot.
4. A mass transfer device according to claim 1, wherein the end portion (3') being provided with at least one recess (4, 4') has a non-circular cross-section.
5. A mass transfer device according to claim 4, wherein5 the non-circular cross-section includes an essentially right-angled corner.
6. A mass transfer device according to any preceding claim, wherein the end portion (3') is further provided with a slot valve (13) placed spaced apart fromo the end portion (3')-
7. A mass transfer device according to any preceding claim, wherein at least one of the end portions (3') of the conduit (3) is provided with a larger dimension than a portion of the conduit located between the con- duit (3) end portions (3') .
8. A mass transfer device according to any preceding claim, wherein the conduit is attached to an arm (5) , which is movable in the horizontal and vertical planes .
9. A mass transfer device according to claim 8, wherein the in the horizontal and vertical planes movable arm (5) is provided with a telescopically displaceable end portion.
10. A method for transferring drill cuttings (9) to or from a receptacle (7) , where the transfer is provided by means of a conduit (3) connected to an airflow- generating device producing an airflow which is sufficient to suck the drill cuttings (9) into and through the conduit (3), c h a r a c t e r i s e d i n that the conduit (3) is provided with an end portion (3') including at least on recess (4) in the end portion (3') of the mantle and with a control device (11) arranged to be able to control the effective size of the recess (4 , 4 ' ) .
PCT/NO2009/000033 2008-02-01 2009-01-28 An apparatus and method for filling and emptying a drill cuttings receptacle WO2009096798A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20080601A NO20080601L (en) 2008-02-01 2008-02-01 Apparatus and method for filling or emptying a cuttings container
NO20080601 2008-02-01

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WO2009096798A1 true WO2009096798A1 (en) 2009-08-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018109478A1 (en) * 2016-12-14 2018-06-21 Axiom Process Limited Shale shaker basket system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL4348C (en) * 1917-06-06 1920-01-02
DE1556618A1 (en) * 1968-01-05 1970-02-19 Miag Muehlenbau & Ind Gmbh Suction pipe of a pneumatic debris lifter
US4131319A (en) * 1975-06-26 1978-12-26 Conair, Inc. Transporting device and method of transporting
EP0371464A1 (en) * 1988-11-30 1990-06-06 Eisai Co., Ltd. Pneumatic conveyor for grainy material and suction nozzle for use in such conveyor
GB2369135A (en) * 2000-11-15 2002-05-22 Qed Internat Ltd System for collection, transportation and delivery of drill cuttings
WO2006056849A2 (en) * 2004-11-29 2006-06-01 Francois Maree Vorster A pneumatic materials handling unit
WO2007034215A1 (en) * 2005-09-23 2007-03-29 William Curle Drill cuttings storage and conveying

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL4348C (en) * 1917-06-06 1920-01-02
DE1556618A1 (en) * 1968-01-05 1970-02-19 Miag Muehlenbau & Ind Gmbh Suction pipe of a pneumatic debris lifter
US4131319A (en) * 1975-06-26 1978-12-26 Conair, Inc. Transporting device and method of transporting
EP0371464A1 (en) * 1988-11-30 1990-06-06 Eisai Co., Ltd. Pneumatic conveyor for grainy material and suction nozzle for use in such conveyor
GB2369135A (en) * 2000-11-15 2002-05-22 Qed Internat Ltd System for collection, transportation and delivery of drill cuttings
WO2006056849A2 (en) * 2004-11-29 2006-06-01 Francois Maree Vorster A pneumatic materials handling unit
WO2007034215A1 (en) * 2005-09-23 2007-03-29 William Curle Drill cuttings storage and conveying

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018109478A1 (en) * 2016-12-14 2018-06-21 Axiom Process Limited Shale shaker basket system
US11833544B2 (en) 2016-12-14 2023-12-05 Grant Prideco, Inc. Shale shaker basket system

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