CA2793233C - Improved shaker table with inertial gas/fluid separation means - Google Patents
Improved shaker table with inertial gas/fluid separation means Download PDFInfo
- Publication number
- CA2793233C CA2793233C CA2793233A CA2793233A CA2793233C CA 2793233 C CA2793233 C CA 2793233C CA 2793233 A CA2793233 A CA 2793233A CA 2793233 A CA2793233 A CA 2793233A CA 2793233 C CA2793233 C CA 2793233C
- Authority
- CA
- Canada
- Prior art keywords
- drilling fluid
- shaker
- aperture
- vacuum
- gas
- 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.)
- Expired - Fee Related
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 75
- 238000000926 separation method Methods 0.000 title abstract description 23
- 238000005553 drilling Methods 0.000 claims abstract description 64
- 238000005520 cutting process Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 36
- 238000011084 recovery Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 53
- 239000007787 solid Substances 0.000 abstract description 9
- 239000002245 particle Substances 0.000 abstract description 8
- 238000009826 distribution Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000011044 inertial separation Methods 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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
-
- 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
- E21B21/067—Separating gases from drilling fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2230/00—Specific aspects relating to the whole B07B subclass
- B07B2230/01—Wet separation
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
An apparatus and method for use in a solids control system to separate drilling fluid from drill cuttings. The apparatus comprises at least one shaker screen for supporting drilling fluid contaminated drill cuttings within a shaker; a vacuum system operatively connected to at least a portion of the at least one shaker screen, effective to draw air and/or drilling fluid through the at least one shaker screen; and at least one inertial gas-liquid separation device operatively connected to the vacuum system, effective to remove liquid particles from a gas-liquid stream within the vacuum system. A method for operating the apparatus within a shaker system is also described.
Description
IMPROVED SHAKER TABLE WITH INERTIAL
GAS/FLUID SEPARATION MEANS
FIELD OF INVENTION
[0001] The present invention relates to solids control generally, and more specifically, to shakers used to separate drilling fluid from drill cuttings. In particular, the present invention relates to a shaker apparatus comprising at least one inertial gas-liquid separation device.
BACKGROUND OF THE INVENTION
GAS/FLUID SEPARATION MEANS
FIELD OF INVENTION
[0001] The present invention relates to solids control generally, and more specifically, to shakers used to separate drilling fluid from drill cuttings. In particular, the present invention relates to a shaker apparatus comprising at least one inertial gas-liquid separation device.
BACKGROUND OF THE INVENTION
[0002] Solids control is used in oil and gas drilling operations, as well as in mining and other industries, to separate solids from the drilling fluids, or 'mud' used in the drilling process.
These drilling fluids can have several functions, including lubrication and cooling of the drill bit, as well as to convey drilled cuttings away from a bore hole. The fluids are typically a mixture of various chemicals in a water or oil based solution, and can be very costly. To reduce these costs, and lessen the impact of these potentially toxic chemicals on the environment, it is desirable to recover drilling fluids from the drilled cuttings before they are disposed of.
These drilling fluids can have several functions, including lubrication and cooling of the drill bit, as well as to convey drilled cuttings away from a bore hole. The fluids are typically a mixture of various chemicals in a water or oil based solution, and can be very costly. To reduce these costs, and lessen the impact of these potentially toxic chemicals on the environment, it is desirable to recover drilling fluids from the drilled cuttings before they are disposed of.
[0003] Shale shakers have been used for decades in solids control processes to recover drilling fluid. They typically comprise a number of rectangular screens arranged in a basket, or 'bed', having one open discharge end and a solid walled feed end. The basket is arranged to receive recovered drilling mud at the feed end, and a skip or ditch is provided beneath the open discharge end of the basket to receive solids in which fluid has been mostly removed from the drill cuttings. A specialized motor, or vibrator, applies a vibratory force to the shaker bed and causes the basket and screens fixed thereto to shake. Solids laden mud is introduced at the feed end of the basket on to the screens. The shaking motion imparted by the motor to the basket induces the solids to move along the screens towards the open discharge end, while drilling fluid passes through the screens and is received into a receptor for further processing.
[0004] The present invention is directed to improvements in shale shaker technology which improves the separation process through the provision of an inertial gas/liquid separator, CAL_LAW\ 1861513\1 which functions to remove or reduce the content of certain gases that may be present in the drilling fluid.
SUMMARY OF THE INVENTION
SUMMARY OF THE INVENTION
[0005] It has been found that prior art shaker tables which employ a vacuum pump to assist in separating drilling fluid from drill tailings which are being passed along such shaker table are very difficult to operate effectively for consistent performance.
Problematically, at times the vacuum pump draws air through the tailings with execessive force such that tailings, even though not able to be drawn through the screen, become entrained in the screen, and clog further operation. Alternatively, at the same speed of the vacuum pump, at other times the vacuum pressure has been found to be insufficient to sufficiently separate liquid entrained in the tailings from such drill tailings.
Problematically, at times the vacuum pump draws air through the tailings with execessive force such that tailings, even though not able to be drawn through the screen, become entrained in the screen, and clog further operation. Alternatively, at the same speed of the vacuum pump, at other times the vacuum pressure has been found to be insufficient to sufficiently separate liquid entrained in the tailings from such drill tailings.
[0006] It has been postulated, without being held to such theory, that undesirable "slugs" of fluid pass from time to time to the vacuum pump, undesirably causing pressure fluctuations in the vacuum pressure supplied to the screens, causing a "swing" in vacuum pressure from too much vacuum being supplied, to too little vacuum pressure being supplied when a "slug"
of liquid enters the pump and momentarily causes a drop in vacuum pressure being exerted by the pump.
of liquid enters the pump and momentarily causes a drop in vacuum pressure being exerted by the pump.
[0007] Accordingly, it is an object of the invention to provide an improved shaker table comprising an inertial gas/fluid separation means.
[0008] Alternatively, or in addition, it is a further object of the invention to make a more uniform application of vacuum pressure being supplied to a shaker table, to avoid undesirable pressure swings and thus non-consistent application of vacuum pressure to vacuum screens.
[0009] Accordingly, in a first broad aspect of the present invention there is herein provided an apparatus for separating drilling fluid from drill cuttings on a shaker, the apparatus comprising:
at least one shaker screen for supporting drilling fluid contaminated drill cuttings within the shaker;
CAL_LAW\ 1861513\1 a vacuum system operatively connected to at least a portion of the at least one shaker screen, effective to draw air and/or drilling fluid through the at least one shaker screen; and at least one inertial gas-liquid separation device operatively connected to the vacuum system, effective to remove liquid particles from a gas-liquid stream within said vacuum system.
at least one shaker screen for supporting drilling fluid contaminated drill cuttings within the shaker;
CAL_LAW\ 1861513\1 a vacuum system operatively connected to at least a portion of the at least one shaker screen, effective to draw air and/or drilling fluid through the at least one shaker screen; and at least one inertial gas-liquid separation device operatively connected to the vacuum system, effective to remove liquid particles from a gas-liquid stream within said vacuum system.
[0010] In a further alternative broad aspect of the present invention, such invention comprises a shaker table apparatus for separating drilling fluid from drill cuttings, the apparatus comprising:
at least one shaker screen for supporting drilling fluid contaminated drill cuttings;
vibratory means for vibrating said drill cuttings on said at least one shaker screen;
a vacuum system comprising a vacuum pump, operatively connected to at least a portion of the at least one shaker screen, effective to draw air and drilling fluid through the at least one shaker screen; and at least one inertial gas-liquid separation device , interposed between said shaker screen and said vacuum pump, effective to remove or partially remove liquid particles from a gas-liquid stream prior to said liquid particles entering said vacuum pump.
at least one shaker screen for supporting drilling fluid contaminated drill cuttings;
vibratory means for vibrating said drill cuttings on said at least one shaker screen;
a vacuum system comprising a vacuum pump, operatively connected to at least a portion of the at least one shaker screen, effective to draw air and drilling fluid through the at least one shaker screen; and at least one inertial gas-liquid separation device , interposed between said shaker screen and said vacuum pump, effective to remove or partially remove liquid particles from a gas-liquid stream prior to said liquid particles entering said vacuum pump.
[0011] In certain embodiments, the apparatus may also comprise a drilling fluid collection system for collecting separated drilling fluid from the inertial gas-liquid separation device, the vacuum system and/or from the underside of the at least one screen. The apparatus may additionally comprise a gas collection system for collecting and transporting gas(es) from the gas-liquid stream to a gas containment system.
[0012] In further embodiments, the inertial gas-liquid separation device may comprise an impactor against which said gas-liquid stream is passed. The impactor may also be adapted to cause directional change in a path followed by the gas-liquid stream within the vacuum CAL JAW\ 1861513\1 system, thereby effecting liquid separation. In yet further embodiments, the inertial gas-liquid separation device may comprise a network of fibers and/or impingement barriers which define at least one tortuous path to be followed by gas molecules within the gas-liquid stream.
[0013] Without wishing to be limiting, the vacuum system described above may comprise:
a manifold for operative connection to at least a portion of the at least one shaker screen;
a vacuum hose operatively connected to the manifold; and a vacuum pump operatively connected to the vacuum hose.
a manifold for operative connection to at least a portion of the at least one shaker screen;
a vacuum hose operatively connected to the manifold; and a vacuum pump operatively connected to the vacuum hose.
[0014] In the above embodiment, the inertial gas-liquid separation device may be connected to the vacuum pump via the manifold.
[0015] The apparatus may also comprise at least one tray positioned below the shaker screen(s), adapted to support the shaker screen(s) within the apparatus and to receive fluid which passes through the screen(s). In addition, in further non-limiting embodiments, the tray(s) may be structured so as to define a plenum area below the shaker screen(s), sloping towards a drain which connects to at least one inertial gas-liquid separation device. In such embodiments, the inertial gas-liquid separation device(s) may comprise an inertial gas-liquid separator valve, positioned below the drain(s), and have at least one outlet for removal of fluid droplets from the gas-liquid stream.
[0016] In one preferred embodiment of the gas-liquid inertial separation device of the present invention, such comprises a horizontal 't' shaped junction, with an upper aperture in communication with a tray member and disposed below said at least one shaker screen for drawing a gas-liquid stream in a downward direction from said shaker screen, and having an intermediate aperture disposed at right angles to said downward direction for withdrawing gas horizontally outwardly from said gas-liquid mixture stream flowing downwardly, and further having a lower aperture through which a substantially liquid stream passes having gas withdrawn therefrom.
[0017] Referring to the vacuum system described above, the manifold may in particular embodiments include a plurality of valves for operative connection to the vacuum pump and CAL_LAW\ 1861513\1 the shaker screen(s). In addition, yet without wishing to be limiting, the vacuum pump may in certain embodiments be adjustable to control the vacuum pressure.
[0018] In the described apparatus, the shaker may include a frame which holds the at least one shaker screen in position, and at least one vibrator motor operatively connected to the frame to vibrate the at least one shaker screen during operation.
[0019] In further embodiments, which are non-limiting, the apparatus may be configured with one or more gas sensors (e.g. within the vacuum system) for measuring the quantity and/or composition of gas released from the drilling fluid. In addition, the shaker may be configured with a mass measurement system, such as a sensor (or sensors) connected to the shaker for measuring the relative mass of drill cuttings and fluid on the shaker.
[0020] There is also herein provided herein a method of separating drilling fluid from drill cuttings on a shaker. The method comprises:
introducing drill cuttings contaminated with drilling fluid to an upstream end of a shaker bed having at least one shaker screen;
applying a vacuum force to the at least one shaker screen while operating the shaker bed, the vacuum force being effective to draw gas and/or drilling fluid through the at least one shaker screen; and passing at least a portion of the gas and/or drilling fluid through an inertial gas-liquid separation device to remove liquid particles from a gas-liquid stream.
introducing drill cuttings contaminated with drilling fluid to an upstream end of a shaker bed having at least one shaker screen;
applying a vacuum force to the at least one shaker screen while operating the shaker bed, the vacuum force being effective to draw gas and/or drilling fluid through the at least one shaker screen; and passing at least a portion of the gas and/or drilling fluid through an inertial gas-liquid separation device to remove liquid particles from a gas-liquid stream.
[0021] The above method may, in certain embodiments, further comprise a step of collecting drilling fluid separated from the drill cuttings by the inertial gas-liquid separation device and/or from the underside of the at least one screen.
[0022] In yet further embodiments, the method may also comprise a step of collecting gas from the gas-liquid stream to a gas containment system.
[0023] Further embodiments of the described apparatus and method will be apparent from the detailed description that follows, together with the appended drawings.
CAL_LAW\ 1861513\1 BRIEF DESCRIPTION OF THE DRAWINGS
CAL_LAW\ 1861513\1 BRIEF DESCRIPTION OF THE DRAWINGS
[0024] These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, wherein:
FIGURE 1 shows an example of a shaker table comprising a plurality of tiered shaker screens, in accordance with an embodiment of the invention described herein;
FIGURE 2 shows an example of a shaker screen that may be used with the shaker table shown in Figure 1;
FIGURE 3 shows a portion of the underside of the shaker table shown in Figure 1, illustrating two inertial gas-liquid separator valves, in accordance with an embodiment of the invention described herein;
FIGURE 4 shows an example of a vacuum manifold for use with the apparatus in accordance with an embodiment of the invention described herein;
FIGURE 5 shows an example of a vacuum system for use with the apparatus in accordance with an embodiment of the invention described herein;
FIGURE 6 shows a portion of an example of a shaker and associated vibrator motor, in accordance with an embodiment of the invention described herein;
FIGURE 7 shows an example of a hopper, or base, for use with an apparatus as described herein;
FIGURE 8 shows a portion of an example of a shaker and associated vibrator motor, and illustrates an inertial gas-liquid separator valve, in accordance with an embodiment of the invention described herein; and FIGURE 9 shows an example of a container unit for housing the apparatus of the present invention.
CAL_LAW\ 1861513\1 DETAILED DESCRIPTION
FIGURE 1 shows an example of a shaker table comprising a plurality of tiered shaker screens, in accordance with an embodiment of the invention described herein;
FIGURE 2 shows an example of a shaker screen that may be used with the shaker table shown in Figure 1;
FIGURE 3 shows a portion of the underside of the shaker table shown in Figure 1, illustrating two inertial gas-liquid separator valves, in accordance with an embodiment of the invention described herein;
FIGURE 4 shows an example of a vacuum manifold for use with the apparatus in accordance with an embodiment of the invention described herein;
FIGURE 5 shows an example of a vacuum system for use with the apparatus in accordance with an embodiment of the invention described herein;
FIGURE 6 shows a portion of an example of a shaker and associated vibrator motor, in accordance with an embodiment of the invention described herein;
FIGURE 7 shows an example of a hopper, or base, for use with an apparatus as described herein;
FIGURE 8 shows a portion of an example of a shaker and associated vibrator motor, and illustrates an inertial gas-liquid separator valve, in accordance with an embodiment of the invention described herein; and FIGURE 9 shows an example of a container unit for housing the apparatus of the present invention.
CAL_LAW\ 1861513\1 DETAILED DESCRIPTION
[0025] Described herein with reference to the drawings is an improved shaker table for a shale shaker system used in drilling fluid recovery. The shaker table is equipped with an inertial gas-liquid separation device, which is employed to at least partially remove gas(es) from the drilling fluid, or drilling mud, during the recovery process.
[0026] An embodiment of the shaker table is shown in figure 1, which illustrates a shaker table 10 including three tiered trays 15. The trays 15 are designed to support a series of screens 20, and have a sloped base portion 25 to facilitate draining of drilling fluid recovered in the process towards the drain valve aperture 30. Table designs with more or less than three shaker screens 20 are also envisioned, and are encompassed within the scope of the invention as described herein.
[0027] The screens used in the shaker table illustrated in figure 1 are generally known in the art, and have been described in detail previously (e.g. in U.S. 7,581,647 and WO
2011/113132),, A generalized illustration of an embodiment of the shaker screen 20 is shown in figure 2. Without wishing to be limiting in any way, the shaker screen 20 will generally have a defined particle size limit. In certain embodiments it may be desirable for the screens to be anywhere from about 50 to about 325 mesh.
2011/113132),, A generalized illustration of an embodiment of the shaker screen 20 is shown in figure 2. Without wishing to be limiting in any way, the shaker screen 20 will generally have a defined particle size limit. In certain embodiments it may be desirable for the screens to be anywhere from about 50 to about 325 mesh.
[0028] Figure 3 illustrates a portion of the underside of the shaker table 10 showing a portion of the supporting structure of the trays 15 and two inertial gas-liquid separation valves 35, each connected to the respective drain valve apertures 30 of two of the trays.
Tubing 40(a,b) connects the inertial gas-liquid separation valves to a vacuum system 50 (see Fig. 5) which may, in certain non-limiting embodiments comprise a gas collection system, and a fluid collection system 55.
Tubing 40(a,b) connects the inertial gas-liquid separation valves to a vacuum system 50 (see Fig. 5) which may, in certain non-limiting embodiments comprise a gas collection system, and a fluid collection system 55.
[0029] The inertial gas-liquid separation valves 35 are one example of the inertial gas-liquid separator envisioned by the present invention. In general, an inertial gas-liquid separator may remove liquid particles from a gas-liquid stream by accelerating a stream or aerosol to high velocities through nozzles or orifices, and directing same against an impactor, typically CALLAW\ 1861513\1 causing a sharp directional change, effecting liquid separation. The inertial gas-liquid separator may also pass a gas through a network, such as fibers and impingement barriers, such that the gas stream follows a tortuous path around these obstacles while liquid droplets go in straighter paths, impacting these obstacles. Once this occurs, the droplet or particle loses velocity and/or coalesces, and eventually falls downwards towards the fluid collection system 55.
[0030] In the embodiment of the gas-liquid inertial separation device (valve) 35 shown in Figure 3, such comprises a horizontal 't' shaped junction, with an upper aperture in communication with a drain valve aperture 30 disposed below said at least one shaker screen for drawing a gas-liquid stream in a downward direction from said shaker screen 15, and 15 having an intermediate aperture 38 disposed at right angles to said downward direction for withdrawing gas horizontally outwardly from said gas-liquid mixture stream flowing downwardly, and further having a lower aperture through 35 which a substantially liquid stream passes having gas withdrawn therefrom.
[0031] Figure 4 shows an example of a distribution manifold 60 comprising a plurality of ports for connecting to vacuum hoses 40 (a,b,c) and valves which connect the manifold 60 to the vacuum system 50 and to the valves 35 of the shaker table. The distribution manifold 60 can be designed in various embodiments to suit the particular design and configuration of the shaker and vacuum systems employed. In this particular embodiment the distribution manifold 60 is placed within a shale bin 65, and can be configured to operate with one or more shaker tables with a varying number of shaker screens 20 and trays 15.
[0032] The distribution manifold 60 can be connected, via vacuum tubing 40c, to the vacuum system 50. The vacuum system 50 facilitates the recovery of drilling fluid by drawing air, drilling fluid and any residual gases present in the drilling mud through the screens 20 of the shaker table 10. One example of the vacuum system 50 is shown in figure 5. The vacuum system may comprises a vacuum pump 70 operably configured within the system, one or more storage vessels or accumulators 75 (a,b), gauge(s) 80 and sensors (not shown), as well as an appropriate power source. The vacuum system 50 may also comprise, if desired, a gas CAL_LAW\ 1861513\1 collection system and/or secondary fluid/gas separation means. Vacuum systems as described previously, for example in WO 2011/113132 1( may also be employed in accordance with the improved shaker table described herein.
[0033] The shaker table 10 described herein will be adapted for use within a shaker apparatus, or bed 100, such as that illustrated in part in figure 6. The shaker 100 typically includes one or more motors 105 and a resilient structure adapted to impart mechanical shaking energy to the screens of the shaker table 10. A hopper, or 'base' 80 as shown in figure 7 may also be included within the system, in certain embodiments, and can function both as a platform for the shaker 100 and optionally as a collection pan for the fluid processed by the shaker table 10. The base 80 can be structured according to the needs of the drilling fluid recovery system.
For instance, it can come in different depths to accommodate larger quantities of drilling fluid as well as have ports for returning the recovered drilling fluid to the mud system. It is also expected that the base will have appropriate allowances for the vacuum hoses and fluid recovery conduits of the system described herein, as illustrated for example in figure 8.
For instance, it can come in different depths to accommodate larger quantities of drilling fluid as well as have ports for returning the recovered drilling fluid to the mud system. It is also expected that the base will have appropriate allowances for the vacuum hoses and fluid recovery conduits of the system described herein, as illustrated for example in figure 8.
[0034] In addition, the vacuum system 50 and shaker table 10 may, in certain optional embodiments, be housed within a container 120 as illustrated in figure 9.
Housing these and other components of the shaker system in a contain this way is particularly useful if transportation from site-to-site is envisioned.
Housing these and other components of the shaker system in a contain this way is particularly useful if transportation from site-to-site is envisioned.
[0035] One or more currently preferred embodiments have been described by way of example. It will be apparent to persons skilled in the art that a number of variations and modifications can be made without departing from the scope of the invention as defined in the claims.
CALLAW\ 1861513\1
CALLAW\ 1861513\1
Claims (21)
1. An apparatus for separating drilling fluid from drill cuttings on a shaker, the apparatus comprising:
at least one tray operatively connected to at least one shaker screen on a shaker, the shaker screen for separating drilling fluid from drill cuttings, the tray having a drain aperture for removal of drilling fluid;
a t-shaped connector with an upper aperture in communication with the drain aperture, an intermediate sidewall aperture and a lower aperture allowing downward flow of drilling fluid from the tray; and a vacuum system operatively connected to the t-shaped connector at the intermediate sidewall aperture, the vacuum system effective to draw air and/or drilling fluid through the at least one shaker screen with subsequent exit of the drilling fluid from the system through the lower aperture.
at least one tray operatively connected to at least one shaker screen on a shaker, the shaker screen for separating drilling fluid from drill cuttings, the tray having a drain aperture for removal of drilling fluid;
a t-shaped connector with an upper aperture in communication with the drain aperture, an intermediate sidewall aperture and a lower aperture allowing downward flow of drilling fluid from the tray; and a vacuum system operatively connected to the t-shaped connector at the intermediate sidewall aperture, the vacuum system effective to draw air and/or drilling fluid through the at least one shaker screen with subsequent exit of the drilling fluid from the system through the lower aperture.
2. The apparatus according to claim 1, further comprising:
a drilling fluid collection system for collecting separated drilling fluid from the lower aperture, the vacuum system and/or from the underside of the at least one screen.
a drilling fluid collection system for collecting separated drilling fluid from the lower aperture, the vacuum system and/or from the underside of the at least one screen.
3. The apparatus according to claim 1 or 2, further comprising:
a gas collection system for collecting and transporting contaminating gases separated from the drilling fluid to a gas containment system.
a gas collection system for collecting and transporting contaminating gases separated from the drilling fluid to a gas containment system.
4. The apparatus according to any one of claims 1-3, wherein the lower aperture is provided with a valve for controlling its diameter.
5. The apparatus according to any one of claims 1-4, wherein the tray defines a plenum area below said at least one shaker screen which is sloped towards the drain aperture.
6. The apparatus according to any one of claims 1-5, wherein the vacuum system is adjustable to control the vacuum pressure.
7. The apparatus according to any one of claims 1-6, wherein the shaker includes a frame which holds the at least one shaker screen in position on the tray, and at least one vibrator motor operatively connected to the frame to vibrate the at least one shaker screen during operation.
8. The apparatus according to any one of claims 1-7, further comprising a gas sensor within the vacuum system for measuring the quantity and/or composition of gas released from the drilling fluid.
9. The apparatus according to any one of claims 1-8, further comprising at least one mass measurement sensor connected to the shaker for measuring the relative mass of drill cuttings and fluid on the shaker.
10. A method of separating drilling fluid from drill cuttings on a shaker comprising:
introducing drill cuttings contaminated with drilling fluid to an upstream end of a shaker bed having at least one shaker screen operatively connected to a tray with a drain aperture having a t-shaped connector with an upper aperture in communication with the drain aperture, an intermediate sidewall aperture and a lower aperture allowing downward flow of drilling fluid from the tray to a drilling fluid recovery system; and applying a vacuum force to the at least one shaker screen while operating the shaker, the vacuum force being effective to convey the drilling fluid to the drilling fluid recovery system
introducing drill cuttings contaminated with drilling fluid to an upstream end of a shaker bed having at least one shaker screen operatively connected to a tray with a drain aperture having a t-shaped connector with an upper aperture in communication with the drain aperture, an intermediate sidewall aperture and a lower aperture allowing downward flow of drilling fluid from the tray to a drilling fluid recovery system; and applying a vacuum force to the at least one shaker screen while operating the shaker, the vacuum force being effective to convey the drilling fluid to the drilling fluid recovery system
11. The method of claim 10 wherein at least part of the vacuum force is applied via the sidewall aperture of the t-shaped connector.
12. A shaker table apparatus for separating drilling fluid from drill cuttings, the apparatus comprising:
at least one shaker screen for supporting drilling fluid contaminated drill cuttings;
a tray for supporting the shaker screen, the tray having a drain aperture for removal of drilling fluid;
a t-shaped connector with an upper aperture in communication with the drain aperture, an intermediate sidewall aperture and a lower aperture allowing downward flow of drilling fluid from the tray to a drilling fluid recovery system;
vibratory means for vibrating the drill cuttings on said at least one shaker screen; and a vacuum system comprising a vacuum pump, operatively connected to the t-shaped connector, the vacuum system effective to draw air and drilling fluid through the at least one shaker screen.
at least one shaker screen for supporting drilling fluid contaminated drill cuttings;
a tray for supporting the shaker screen, the tray having a drain aperture for removal of drilling fluid;
a t-shaped connector with an upper aperture in communication with the drain aperture, an intermediate sidewall aperture and a lower aperture allowing downward flow of drilling fluid from the tray to a drilling fluid recovery system;
vibratory means for vibrating the drill cuttings on said at least one shaker screen; and a vacuum system comprising a vacuum pump, operatively connected to the t-shaped connector, the vacuum system effective to draw air and drilling fluid through the at least one shaker screen.
13. The apparatus according to claim 12, wherein the lower aperture is provided with a valve for controlling its diameter.
14. The apparatus according to claim 12 or 13 wherein the vacuum system is configured to draw the air through the shaker screen at least partly via the sidewall aperture of the t-shaped connector.
15. The apparatus according to any one of claims 12-14, further comprising:
a drilling fluid collection system for collecting separated drilling fluid from the lower aperture, the vacuum system and/or from the underside of the at least one screen.
a drilling fluid collection system for collecting separated drilling fluid from the lower aperture, the vacuum system and/or from the underside of the at least one screen.
16. The apparatus according to any one of claims 12-15, further comprising:
a gas collection system for collecting and transporting contaminating gases separated from the drilling fluid to a gas containment system.
a gas collection system for collecting and transporting contaminating gases separated from the drilling fluid to a gas containment system.
17. The apparatus according to any one of claims 12-16, wherein the tray defines a plenum area below said at least one shaker screen which is sloped towards the drain aperture.
18. The apparatus according to any one of claims 12-17, wherein the vacuum pump is adjustable to control the vacuum pressure.
19. The apparatus according to any one of claims 12-18, further comprising a frame which holds the at least one shaker screen in position on the tray, and wherein the vibratory means is a vibrator motor operatively connected to the frame to vibrate the at least one shaker screen during operation.
20. The apparatus according to any one of claims 12-19, further comprising a gas sensor within the vacuum system for measuring the quantity and/or composition of gas released from the drilling fluid.
21. The apparatus according to any one of claims 12-20, further comprising at least one mass measurement sensor connected to the shaker for measuring the relative mass of drill cuttings and fluid on the shaker.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2793233A CA2793233C (en) | 2012-10-23 | 2012-10-23 | Improved shaker table with inertial gas/fluid separation means |
| AU2013334449A AU2013334449A1 (en) | 2012-10-23 | 2013-10-23 | Improved shaker table with inertial gas/fluid separation means |
| GB1508221.7A GB2521801A (en) | 2012-10-23 | 2013-10-23 | Improved shaker table with inertial gas/fluid separation means |
| RU2015116126A RU2015116126A (en) | 2012-10-23 | 2013-10-23 | IMPROVED VIBRATOR WITH INERTIAL GAS AND LIQUID SEPARATION |
| PCT/CA2013/050803 WO2014063251A1 (en) | 2012-10-23 | 2013-10-23 | Improved shaker table with inertial gas/fluid separation means |
| BR112015009076A BR112015009076A2 (en) | 2012-10-23 | 2013-10-23 | Improved vibrating table with medium for inertial gas / fluid separation. |
| CN201380055598.8A CN104837570A (en) | 2012-10-23 | 2013-10-23 | Improved shaker table with inertial gas/fluid separation means |
| IN4174DEN2015 IN2015DN04174A (en) | 2012-10-23 | 2013-10-23 | |
| MX2015005075A MX2015005075A (en) | 2012-10-23 | 2013-10-23 | Improved shaker table with inertial gas/fluid separation means. |
| NO20150598A NO20150598A1 (en) | 2012-10-23 | 2015-05-15 | Improved Shaker Table with Inertial Gas / Fluid Separation Means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2793233A CA2793233C (en) | 2012-10-23 | 2012-10-23 | Improved shaker table with inertial gas/fluid separation means |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2793233A1 CA2793233A1 (en) | 2013-12-11 |
| CA2793233C true CA2793233C (en) | 2015-07-07 |
Family
ID=49753586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2793233A Expired - Fee Related CA2793233C (en) | 2012-10-23 | 2012-10-23 | Improved shaker table with inertial gas/fluid separation means |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2793233C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2014247668A1 (en) * | 2013-03-30 | 2015-10-01 | Daniel Pomerleau | Improvements in vacuum shaker systems |
| US10081994B2 (en) * | 2015-01-30 | 2018-09-25 | Fp Marangoni Inc. | Screened enclosure with vacuum ports for use in a vacuum-based drilling fluid recovery system |
| CA3005062C (en) | 2017-05-16 | 2024-05-14 | Recover Energy Services Inc. | Base oil composition for use in oil-base drilling mud compositions, and methods of producing same |
| CA3070318A1 (en) * | 2017-07-18 | 2019-01-24 | 1910293 Alberta Ltd. | System and method for recovering lost drilling mud over shale slides |
-
2012
- 2012-10-23 CA CA2793233A patent/CA2793233C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2793233A1 (en) | 2013-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10883353B2 (en) | Oil, water, gas and solid particle separation in oil and/or gas production | |
| RU2541958C2 (en) | Optimisation of vacuum systems and methods of drying of drilled solids | |
| CA2741955C (en) | System and method for drying drill cuttings | |
| CA2793233C (en) | Improved shaker table with inertial gas/fluid separation means | |
| EP2946843B1 (en) | Shaker and degasser combination | |
| CA2921581C (en) | Separator and method of separation with a pressure differential device | |
| US10704346B2 (en) | Apparatus, system and method for separating components of a slurry | |
| CN102906367A (en) | Systems and methods for drying drill cuttings | |
| NO20150598A1 (en) | Improved Shaker Table with Inertial Gas / Fluid Separation Means | |
| US20070108104A1 (en) | Vibratory separators and operations | |
| US20140110357A1 (en) | Shaker table with inertial gas/fluid separation means | |
| GB2560119A (en) | Oil, water, gas and solid particle separation in oil and/or gas production | |
| US20160114267A1 (en) | Cross-flow shaker and method for using the same | |
| WO2015192245A1 (en) | Gravity induced separation of gases and fluids in a vacuum-based drilling fluid recovery system | |
| KR101536694B1 (en) | Separator for sorting particulate material | |
| US9150435B1 (en) | Method of stripping volatile organic compounds from water using a gas sparged hydrocyclone | |
| WO2018071614A1 (en) | Screen pulse system pressure differential generating device | |
| MXPA06008230A (en) | Small droplets recovery system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |
Effective date: 20201023 |