|Número de publicación||US3764008 A|
|Tipo de publicación||Concesión|
|Fecha de publicación||9 Oct 1973|
|Fecha de presentación||27 Abr 1972|
|Fecha de prioridad||27 Abr 1972|
|También publicado como||CA999549A, CA999549A1|
|Número de publicación||US 3764008 A, US 3764008A, US-A-3764008, US3764008 A, US3764008A|
|Inventores||Darley H, Place M|
|Cesionario original||Shell Oil Co|
|Exportar cita||BiBTeX, EndNote, RefMan|
|Citada por (76), Clasificaciones (20)|
|Enlaces externos: USPTO, Cesión de USPTO, Espacenet|
United States Patent 1191 Darley et al.
[ Oct. 9, 1973 WELL OPERATION FOR RECOVERING OIL FROM PRODUCED SAND  Inventors: Henry C. H. Darley, Houston, Tex.;
Morris C. Place, Jr., New Orleans,
I73 I Assignee: Shell Oil Company, Houston, Tex.
221 Filed: A r; 27, 1972 [2!] Appl. No.: 248.073
 0.5. CI. 210/73, 2l0/84, 210/512 M  int. Cl B01d 21/26  Field of Search 210/70, 73, 84, 195,
 References Cited UNITED STATES PATENTS 2,381,760 8/1945 Latham, Jr 210/84 X PRODUCED FL U/D CONTAINING WATER, mmgifi fi lv AND HYDROCARQO SAND SEPARATOR WATER AND 0111 SAND 2,154,968 7/1956 Uegteretal. ..2l0/5l2M 3,707,464 12/1972 Bohnset 3,716,480 2/1973 Finley et a1. 210/73 X Primary Examiner- John Adee Attorney-Harold L. Denkler et a1.
 ABSTRACT in a well operating process for treating a mixture of water, unadsorbed gas and/or liquid hydrocarbons, and oily sand, after removing the unadsorbed hydrocarbons, the sand is de-oiled by repeatedly entraining it in streams of relatively high speed jets of water, centrifically separating an overflow of oily water and an underflow of sandy water in which the sand is substantially oil-free, and removing the oil from the overflow to leave a water which is substantially oil-free.
7 Claims, 1 Drawing Figure OILY WATER OIL a FLOTAT/ON CELL -----cLEA/v WATER CLEAN WATER 1 RE C YCLE DE-O/LED SAND WELL OPERATION FOR RECOVERING OIL FROM PRODUCED SAND BACKGROUND OF THE INVENTION This invention relates to a well operating process for treating fluid produced from a sand productive hydro carbon recovery well in order to isolate marketable hydrocarbons, a substantially oil-free water and a substantially oil-free sand. The invention is particularly useful for operating wells in an ecologically sensitive environment such as an offshore, coastal or marshland environment. In numerous conventionalwell operating processes, fluids containing water, unadsorbed hydrocarbons and oily sand (containing adsorbed hydrocarbons) are treated to isolate substantially only the unadsorbed hydrocarbons while leaving a residue that is apt tocontain oily water and/or oily sand which might be damaging to the ecology. Alternatively, relatively expensive treatments have been proposedifor de-oiling such a sand; for example, by removing the unadsorbed hydrocarbons and a portion of the water and then carbonizing the oil on the oily sandby contacting a residual water. slurry of it with a hot gas, in the manner described in US. Pat. No. 3,516,490;
SUMMARY os THE INVENTION The invention relatesto treating a mixture of water, unadsorbed hydrocarbons, and oily sand to isolate the hydrocarbons, a substantially oil-free water and a substantially oil-free sand. This is accomplished by removing the unadsorbed hydrocarbons, partially de-oiling sand by entraining itin a stream of relatively high speed jOtOfjWfitEl', centrifugally separating the resultant sandladenwater stream by. removing an oily water overflow.
DESCRIPTION OF THE DRAWING.
The drawing is a schematic illustration of apparatus suitable for. use in the. present invention.
DESCRIPTION OF THE INVENTION The invention involves a combination of steps which can be conducted by means of techniques andequipment that are individually currently available to those skilled in the art. In using the present invention, one or a plurality of wells can be operated simultaneouslyor sequentially. Thefluids produced from a group. of wells are preferably conveyed to a common apparatus for simultaneously treating a mixture of the fluids.
In using an apparatus of the type shown in the drawing, a produced fluid containingflwater, unadsorbed hydrocarbons and oily sand is treated in hydrocarbon separator l to remove the gaseous and/or oil phase hydrocarbons that are not adsorbed on the oily sand. Such a hydrocarbon removal can utilize currently available equipment and techniques, such as gravity segregation, hydrocarbon volatilization, emulsion breaking, and the like. The removal of the unadsorbed hydrocarbons leaves a water suspension of oily sand grains.
Where desirable, the sand de-oiling steps of the present invention can. be enhanced by contacting the water suspension of oily sand grains with .an effective amount of a surfactant for increasing the surface tension of an oil-phase liquid. A particularly suitable surfactant material of this type comprises a polar-group-containing aliphatic solvent solution of a relatively long chain aliphatic alcohol, ie an Oil Herder" surfactant, described in more detail in patent application Ser. No. 15,952, filed Mar. 2, 1970, the disclosures of which are incorporated herein by reference.
The sand in the suspension of water and oily sand is partially deoiled by entraining the suspension in the stream of a relatively high speed jet of waterin the Venturi arrangement 2. Such a Venturi arrangement can comprise an eductor, or jet pump, type of apparatus. In the illustrated jet-cyclone type of device, water is forced through nozzle 3 to form a relatively high speed jet of water within a relatively large diameter conduit 4. The slurry of oily sand and water inflows through conduit 5 into conduit 4 where it is entrained in the jet stream. The resultant sand-laden stream of water is separated in the cyclone type of centrifugal device 7. The present centrifugal separating means can advantageously be a conventional cyclone type ofdevice inwhich the centrifugal force is generated by the rapidswirling motion of the entering stream of water. The centrifugation removes an underflow stream of sandy water containing at least partially de-oiled sand and an overflow stream of oily water-containing oil released-from the sand. 7
The present inventionis, at least in part, premisedon a discovery that entraining a water suspension of oily sand in the stream of the relatively high speed jet of water and substantially immediately centrifugally removing a.water suspension of at least partiallyde-oiled sand while leaving an oily water is; a uniquely efficient way of removing and isolating the oil that wasadsorbed on the sand. As a slurry of sandgrains is entrained in a stream of water the grain surfaces are subjected to a strong shearing action during the time the waterin the stream moves along the grain surfaces until the grains have been accelerated (by the friction of the shearing action) to substantially the speed of the waterstream; By immediately centrifuging the sand laden stream, the oily water thatis left by the centrifugal removal of the heavier sand grains is substantially immediately removed from :the area of agitation so that the oil tends to remain in relatively large droplets rather than being sheared down to a coloidal size.
The sandy underflow containing partially. de-oiled sand is treated in the same way in at least one additional Venturi jet device 2a and centrifugal separating device 71: to subsequently form'a sandy water underflow that contains a substantially oil-free sand. As will be apparent to those skilled in the art, the Venturi jet arrangements 2 andZaand centrifugal separating devices 7 and 7a can be separated by conduits, chambers, or the like, as long as substantially all of the partially dc-oiled sand in the underflow from the centrifugal device 7 is maintained in suspension or is re-entrained to form a sand slurry that is flowed into contact with the relatively high spaced jet of water in at least one additional jet device 211. For example, a bank of parallel jet cyclones (e.g. combination of the Venturi jet arrange ments 2 and the centrifugal devices 7) can discharge their underflows containing partially de-oiled sand into one or more chambers from which the sand is reentrained in water if necessary and is then transported into the jet streams of a second bank of jet-cyclones.
The oily water overflow from each such sand grain de-oiling stage is flowed into flotation cell 8 in which the oil is removed while leaving a clean water that is substantially oil-free. At least a portion of that clean water is preferably supplied to pump 9 which drives it through the jet nozzles 3 and 3a of the Venturi devices to provide relatively high speed jets of water. I
In general, the flotation cell 8 can be replaced by one or more of a variety of oil-water-separators for removing the oil from an oily water. Such devices can include one or more flotation coalescing, oil-sorbing, gravity seggregating, filtering, or the like, elements in various combinations, as long as such devices are adapted to remove substantially all of the oil from an oily-water.
As known to those skilled in the art, the sand in a produced fluid containing water, hydrocarbons and oily sand is apt to be contaminated with clay. The recovery disperse the clay within the water. As soon as such an agitation ceases, the clay forms flocs comprising chains and complexes with the oil droplets and these grow to become relatively large flocs that tend to sediment or settle out of the suspension.
In research leading to the present invention, it was found that the amount of such flocs that are formed and the time for them to appear is dependent upon: (1) the degree of agitation of a slurry of the sand and water, the more violent the agitation, the quicker the flocs are formed; (2) the length of time agitated, prolonged agitation causing voluminous flocs to form and (3) the concentration of the sand in the slurry. With a 1 percent by weight sand-in-water slurry, a one minute agitation in a Waring Blender causes visible flocs to appear soon after about 1 hour. When the concentration is increased to 10 percent, a similar agitation causes voluminous flocs to form immediately. Although such flocs tend to sediment out, they often form a very fine suspended flocs and sometimes a thin layer of floating flocs. In general, when the agitation of a slurry of the sand and water is sufficient to release a substantial amount of oil from the sand, it tends to disperse enough clay to floc out the so-released oil.
It was found that, in view of the properties and behavior of the sands and clays in a produced fluid containing oily sand, the oil recovery procedure most readily adaptable for offshore marsh, or coastal conditions should feature a short, violent agitation of a mixtureof the oily sand and water followed by an immediate separation of the de-oiled sand to leave an oily water from which the oil could be removed in a flotation cell. And, such an agitation and separation can advantageously be accomplished by means of Venturi jets that can both entrain the sand being agitated and operate a cyclone centrifugal means for separating the sotreated sand. Once the sand has been de-oiled and separated from the water, the so-released oil in the remaining oily water can readily be removed, for example, by means of flotation and/or other types of oil-waterseparators.
Tests were made of three methods for providing a short vigorous agitation of an oily sand and water. The
sand used was a sample of oily sand obtained by treating a produced fluid containing water, hydrocarbons and oily sand, where the treatment was simply removing the hydrocarbons while leaving water and sand, then removing the sand by means of desanders or desilters while leaving the water. The sand used (except where otherwise indicated) came from tank bottoms and had been exposed to air and some evaporation or oxidation of the adsorbed oil had occurred. Analysis (by pyrolysis flame ionization detection) indicated 30,000 parts per million of adsorbed hydrocarbons on the sand with 3,200 parts per million being volatile at temperatures above about 350C. Over percent of the sand was smalher than 40 rn esh and larger than 300 mesh and the sand was composed of mostly q iiartz that contained a considerable number of hard black shale fragments, occasional lumps of soft clay and a few shale fragments. The brine used in most tests contained 7.3 grams per hundred cc sodium chloride 0.5 grams per hundred cc calcium chloride and smaller amounts of magnesium chloride and sodium bicarbonate.
The tested methods of agitating the sand and brine were (1) mechanical mixers such as a Hamilton Beach or Waring Blender, (2) intense ultrasonic radiation provided by a Blackstone Ultrasonic Probe Model BP-Z driven by an ultrasonic generator model SS-2A, which provided agitation enough to cause cavitation, and (3) a jet-cyclone arrangement of a Venturi jet and a cyclone desander of the type shown in the drawing. In the jet-cyclone arrangement, the jet functions to provide both high shear mixing, in the Venturi tube, and an operation of the cyclone. The jet-cyclone operates in a manner such that the abrasive slurry does not pass through the pump or the jet nozzle.
The efficiency of the three types of agitating procedures were compared by measuring the amount of power consumed per pound of sand deoiled to a given level. The measurement data is contained in Table 1.
In the cyclone bowl.
In each stage, the mixture of oily sand and water was agitated for the indicated number of minutes, with the sand then being allowed to settle out, for an oil content determination by pyrolysis flame ionization detection or the sandy water being subjected to the next state of agitation. The results indicated that the jet cyclone is the most efficient, probably because the oil is so quickly removed after being released from the sand grains.
the trade name BUTYL OXlTOL and BUTYL DIOX- ITOL.
What is claimed is:
TABLE 2.-REMOVAL OF OIL IN LABORATORY JET-CYCLONE Surfactant vcnturi Jet Water Conesaud Cqncsand n 1ia. jet output, pressure, in hopper, 111 cone, thruput, Gone. in core No. of carbons tube, in. g.p.m. p.s.1. 2.]100 cc. gJlOO ec. lb./m1n. Brand name stages added stazcs p.p.111l
Sample of Sand from Dump 55 -15 2,2 B 120 1.8 0.4 Herder 6 2 400 1 52 2.21; 120 10 1.8 0.1 do 10 1700 m m 2.5 B 120 10 4.5 1.5 t1o. 5 2'000 32'12-912 2.3 1 120 3 1.11 5 2'000 11-952 3.81" 120 a .75 .31 Nude. 11 1' 500 -9112 4.0 F 120 o 1.45 .63 5 1400 ,5- .5 4.15 120 10 2.2 1.0 s 1'100 M1 152 5.01 200 10 2.5 1.35 5 990 r 3 5,01 200 6 1.5 .7 6 1,000 144 5 5,011 200 6 1-5 6 55-952 5.011 200 6 1.5 .78 s 35-952 5.013 200 s 1.5 .78 s 93 3 5,013 200 6 1.5 .7 6
Sample of Sand from Desauder Discharge Ax-9&2 5.011 200 6 1- 1 4 151-952 5.0 B 200 o 1.5 2 5 lit-e52 5.0 B 200 5 1.5 3 10 P952 5,011 200 5 1.5 4 10 nt-952 5.0 B 200 10 2.4 1 2o B=syntl1ctie produced brine, F=frosl1 water. percent from 3rd to last stage.
The data in Table 2 indicate that the amount of residual sand grain adsorbed hydrocarbons decreased with: (I) an increase in the number of stages, (Experiments l and 2); (2) an increase in jet size (Experiments 4 and 5); (3) an increase in jet pressure (Experiments 7 and 8); and (4) an increase in sand concentration (Experiments 5, 6 and 7).
Note that with the sand from the cyclone desander discharge, which was very much cleaner than the previous sample from the dump (Experiments l4-l8), the residual hydrocarbons on the sand grains (after they had been separated from the associated water and rinsed lightly) were only 340 parts per million and there were 600 parts per million in the associated water. These experiments show that there were only 10 parts per million of oil adsorbed on the sand after three passes through the jet-cyclone arrangement. The total power consumed by the three stages was only 0.05 KWH per pound of sand. There was no sand in the overflow from the cyclone even when the concentration of the sand in input slurry was 10 percent by weight of the water. Very little clay was observed in this sample and only traces of floc developed in' theoily water cyclone overflow. In the treatment of this sand, the addition of an oily liquid surface tension increasing surfactant such as the oil herder made no significant difference.
The preferred composition of an oil-phase liquid, in- 1 terfacial tension increasing surfactant for use in the present invention comprises a non-toxic blend of a primary essentially straight long chain aliphatic alcohol having some branching of less than 5 percent of the formula ROH where R is preferably a straight chain alkyl or alkenyl radical of some 10 to 20, and preferably 12 to 15, carbon atoms, said alcohol being dispersed in a polar aliphatic solvent containing at least one hydroxyl, ether, ester, ketone, keto-alcohol, keto-ether, ketoester or ether-alcohol group in the molecule, said aliphatic alcohol being dispersable in a concentration of from about 10 to percent, or greater, in the solvent. Suitable long chain alcohols are available from Shell Chemical Company under the trade name of NEO- DOL, such as NEODOL 23, 25 or 45. Preferred solvent mono or dibutyl ethers of ethelene glycol, commercially available from Shell Chemical Company under l. A well operating process for treating a mixture of water, unadsorbed hydrocarbons and oily sand to isolate the hydrocarbons, a substantially oil-free water and a substantially oil-free sand, comprising:
removing said unadsorbed hydrocarbons while leaving a water suspension of oily sand; partially de-oiling the sand in said water suspendion by entraining the suspension in the stream of a relatively high speed jet of water; centrifugally removing a water suspension of partially deoiled sand from said water stream while leaving an oily water; further de-oiling said partially de-oiled sand by entraining a water suspension of it in at least I additional stream of a relatively high speed jet of water; centrifugally removing a water suspension of substantially oil-free sand from at least one of said additional water streams while leaving an oily water; and removing oil from said oily water while leaving a substantially oil-free water.
2. The process of claim 1 in which the centrifugal separations of said suspensions of sand in water streams are effectedby flowing the streams in circular paths in which sand-separating centrifugal forces are generated by the rapid swirling motions of the streams substantially immediately after the sand has been entrained in the streams.
3. The process of claim 2 in which said removing of oil from oily water is effected by flotation.
4. The process of claim 1 in which a plurality of wells are operated by treating a mixture of their produced fluids.
5. The process of claim 1 in which at least a portion of the oil-free water left by said separation of oil is used to form at least one of said relatively high speed jets of water.
6. The process of claim 1 in which a surfactant material 'adapted to increase the surface tension of an oilphase liquid is mixed with the water suspension of oily sand left by said removal of hydrocarbons.
7. The process of claim 6 in which said surfactant material is a polar-group-containing aliphatic solvent solution of a relatively long chain aliphatic alcohol.
|Patente citante||Fecha de presentación||Fecha de publicación||Solicitante||Título|
|US3869384 *||21 Ene 1974||4 Mar 1975||Cities Service Canada||Tailings disposal system for tar sands plant|
|US3925204 *||29 Mar 1973||9 Dic 1975||Exxon Research Engineering Co||Liquid separating equipment|
|US3972816 *||23 Ago 1974||3 Ago 1976||Change, Inc.||Oil extractor|
|US4036606 *||29 Ago 1975||19 Jul 1977||Steag Aktiengesellschaft||Method of cleaning gases and apparatus therefor|
|US4161448 *||21 Feb 1978||17 Jul 1979||Kobe, Inc.||Combined separator and pump with dirty phase concentrator|
|US4243528 *||25 Jun 1979||6 Ene 1981||Kobe, Inc.||Treater for mechanically breaking oil and water emulsions of a production fluid from a petroleum well|
|US4366063 *||17 Jun 1981||28 Dic 1982||Romec Environmental Research & Development, Inc.||Process and apparatus for recovering usable water and other materials from oil field mud/waste pits|
|US4399041 *||26 May 1981||16 Ago 1983||International Coal Refining Company||Process for particulate removal from coal liquids|
|US4415368 *||30 Jul 1981||15 Nov 1983||H. A. Kroon B.V.||Method of purifying soil polluted by oil|
|US4501671 *||3 Ene 1984||26 Feb 1985||Alfa-Laval, Inc.||Method and apparatus for treatment of oily waste|
|US4678558 *||3 Jul 1985||7 Jul 1987||Institut Francais Du Petrole||Method usable in particular for washing and desorbing solid products containing hydrocarbons|
|US4698152 *||3 Ago 1984||6 Oct 1987||Noel Carroll||Oil recovery systems|
|US4738783 *||3 Jul 1986||19 Abr 1988||Kazutoyo Sugihara||Flotation cyclone device|
|US4783268 *||28 Dic 1987||8 Nov 1988||Alberta Energy Company, Ltd.||Microbubble flotation process for the separation of bitumen from an oil sands slurry|
|US4851123 *||20 Nov 1986||25 Jul 1989||Tetra Resources, Inc.||Separation process for treatment of oily sludge|
|US4927536 *||21 Mar 1989||22 May 1990||Amoco Corporation||Hydrocyclone separation system|
|US4981579 *||2 Dic 1988||1 Ene 1991||The Standard Oil Company||Process for separating extractable organic material from compositions comprising said extractable organic material intermixed with solids and water|
|US5006239 *||23 Abr 1990||9 Abr 1991||Tetra Technologies, Inc.||apparatus for treatment of oily sludge|
|US5066386 *||14 Jun 1990||19 Nov 1991||The Standard Oil Company||Extraction of oil from stable oil-water emulsions|
|US5092983 *||30 Nov 1989||3 Mar 1992||The Standard Oil Company||Process for separating extractable organic material from compositions comprising said extractable organic material intermixed with solids and water using a solvent mixture|
|US5147534 *||31 Jul 1990||15 Sep 1992||Rymal Jr Theodore R||Waste water treatment system|
|US5186817 *||15 Abr 1991||16 Feb 1993||The Standard Oil Company||Process for separating extractable organic material from compositions comprising oil-in-water emulsions comprising said extractable organic material and solids|
|US5202031 *||30 Jul 1992||13 Abr 1993||Rymal Jr Theodore R||Waste water treatment system|
|US5298167 *||10 Dic 1992||29 Mar 1994||Arnold Kenneth E||Method for separating immiscible liquid|
|US5302294 *||2 May 1991||12 Abr 1994||Conoco Specialty Products, Inc.||Separation system employing degassing separators and hydroglyclones|
|US5350525 *||11 Sep 1992||27 Sep 1994||Conoco Specialty Products Inc.||System and process for hydrocyclone separation of particulate solids and at least one liquid phase from a multiphase liquid mixture|
|US5368747 *||13 Feb 1993||29 Nov 1994||Theodore R. Rymal, Jr.||Fluid separation system and method|
|US5647906 *||11 Mar 1992||15 Jul 1997||A-Z Terminal Corporation||Pipe cleaning machine|
|US5958256 *||4 Jun 1997||28 Sep 1999||Tetra Technologies, Inc.||Method for pretreating an industrial wastewater|
|US6074549 *||11 Sep 1998||13 Jun 2000||Canadian Environmental Equipment & Engineering Technologies, Inc.||Jet pump treatment of heavy oil production sand|
|US6213208 *||17 Sep 1996||10 Abr 2001||Baker Hughes Limited||Three component separation in an oil well|
|US6451743||14 Nov 2000||17 Sep 2002||Chevron Phillips Chemical Company Lp||Stable liquid suspension compositions and method of making and use thereof|
|US6517733 *||11 Jul 2000||11 Feb 2003||Vermeer Manufacturing Company||Continuous flow liquids/solids slurry cleaning, recycling and mixing system|
|US6527960||17 Feb 1999||4 Mar 2003||Canadian Environmental Equipment & Engineering Technologies, Inc.||Jet pump treatment of heavy oil production sand|
|US7147788||17 May 2001||12 Dic 2006||Magnar Tveiten||Separating a hydrocarbon production stream into its oil, water and particle constituents|
|US7225757||8 Mar 2005||5 Jun 2007||Fagan Paul J||Method of cleaning soiled bedding material in barns|
|US7383828||27 May 2005||10 Jun 2008||Emission & Power Solutions, Inc.||Method and apparatus for use in enhancing fuels|
|US7404903||3 Feb 2006||29 Jul 2008||Rj Oil Sands Inc.||Drill cuttings treatment system|
|US7416671 *||21 Jul 2004||26 Ago 2008||Rj Oil Sands Inc.||Separation and recovery of bitumen oil from tar sands|
|US7428896||27 May 2005||30 Sep 2008||Emission & Power Solutions, Inc.||Method and apparatus for use in enhancing fuels|
|US7691259 *||3 Mar 2006||6 Abr 2010||M-I L.L.C.||Separation of tar from sand|
|US8137566||13 Jun 2008||20 Mar 2012||Rj Oil Sands Inc.||Recovery of tailings ponds|
|US8317904||5 Ene 2009||27 Nov 2012||Caltec Limited||Sand separation system and method|
|US8747679 *||5 Ago 2013||10 Jun 2014||Caltec Limited||Separation system and method for separating a fluid mixture with this separating system|
|US8815100 *||25 Oct 2006||26 Ago 2014||Saipem S.A.||Method and a device for separating a multiphasic liquid|
|US9334175||30 Jun 2011||10 May 2016||1501367 Alberta Ltd.||Method and apparatus for treatment of fluids|
|US20030168391 *||17 May 2001||11 Sep 2003||Magnar Tveiten||Separating a stream containing a multi-phase mixture and comprising lighter and heavier density liquids and particles entrained therein|
|US20030203821 *||25 Abr 2002||30 Oct 2003||Fox Kelly B.||Stable liquid suspension compositions and method of making|
|US20050284453 *||27 May 2005||29 Dic 2005||Fuel Fx International, Inc.||Method and apparatus for use in enhancing fuels|
|US20050287025 *||27 May 2005||29 Dic 2005||Fuel Fx International, Inc.||Method and apparatus for use in enhancing fuels|
|US20060016760 *||21 Jul 2004||26 Ene 2006||Bozak Wade R||Separation and recovery of bitumen oil from tar sands|
|US20070131590 *||12 Dic 2005||14 Jun 2007||Rj Oil Sands Inc.||Separation and recovery of bitumen oil from tar sands|
|US20070181158 *||3 Feb 2006||9 Ago 2007||Rj Oil Sands Inc.||Drill cuttings treatment system|
|US20070205141 *||3 Mar 2006||6 Sep 2007||M-I L.L.C.||Separation of tar from sand|
|US20080277318 *||28 Jul 2008||13 Nov 2008||Rj Oil Sands Inc.||Separation and recovery of bitumen oil from tar sands|
|US20090020458 *||13 Jun 2008||22 Ene 2009||Rj Oil Sands Inc.||Recovery of tailings ponds|
|US20090152204 *||25 Oct 2006||18 Jun 2009||Saipem S.A.||Method and a Device for Separating a Multiphasic Liquid|
|US20100230325 *||25 Jun 2007||16 Sep 2010||Oil Pollution Services Limited||Process for removing oil from particulate matter|
|US20110031194 *||5 Ene 2009||10 Feb 2011||Mir Mahmood Sarshar||Separation system and method for separating a fluid mixture with this separating system|
|US20110036239 *||5 Ene 2009||17 Feb 2011||Mir Mahmood Sarshar||Sand separation system and method|
|US20110266198 *||28 Oct 2010||3 Nov 2011||H R D Corporation||Bitumen extraction and asphaltene removal from heavy crude using high shear|
|US20120241390 *||29 Mar 2012||27 Sep 2012||H R D Corporation||Bitumen extraction and asphaltene removal from heavy crude using high shear|
|US20150093259 *||29 Mar 2013||2 Abr 2015||Michael Pepper||Pumping A Multiphase Fluid Using A Pneumatic Pump|
|DE3019234A1 *||20 May 1980||3 Dic 1981||Univ Duke||Spectrophotometric monitoring of oxidative metabolism - detects and measures intensity of radiation emerging at point spaced from entry point of near IR|
|DE3208863A1 *||11 Mar 1982||23 Dic 1982||Int Coal Refining Co||Verfahren zur entfernung von feststoffteilchen aus fluessigkeiten auf kohlebasis|
|WO1982004435A1 *||17 May 1982||23 Dic 1982||Romec Environmental Res & Dev||Process and apparatus for recovering usable water and other materials from oil field mud/waste pits|
|WO1985000851A1 *||3 Ago 1984||28 Feb 1985||Noel Carroll||Oil recovery systems|
|WO1992002461A1 *||30 Jul 1991||20 Feb 1992||Rymal Theodore R Jr||Waste water treatment system|
|WO1992019348A1 *||2 May 1991||12 Nov 1992||Conoco Specialty Products Inc.||Oil/water separation system|
|WO1992019352A1 *||30 Abr 1992||12 Nov 1992||Conoco Specialty Products Inc.||Hydrocyclone separator|
|WO1999042218A1 *||17 Feb 1999||26 Ago 1999||Canadian Environmental Equipment & Engineering Technologies Inc.||Jet pump treatment of heavy oil production sand|
|WO2001087453A2 *||17 May 2001||22 Nov 2001||Rockwater Limited||Separating a stream containing a multi-phase mixture of lighter and heavier density liquids and particles|
|WO2001087453A3 *||17 May 2001||18 Abr 2002||Rockwater Ltd||Separating a stream containing a multi-phase mixture of lighter and heavier density liquids and particles|
|WO2007054651A1 *||25 Oct 2006||18 May 2007||Saipem S.A.||Multiphase liquid separating method and device|
|WO2009050508A3 *||15 Oct 2008||29 Abr 2010||Nathan Benjamin Edwards||Separating liquids or liquid and solids and apparatus therefor|
|WO2009092997A3 *||5 Ene 2009||2 Sep 2010||Caltec Limited||Sand separation system and method|
|Clasificación de EE.UU.||210/704, 208/390, 210/712, 210/512.2, 210/806, 210/709, 210/781|
|Clasificación internacional||C10G1/04, E21B41/00, E21B43/34, C10G1/00, B03D1/00, B03D1/02|
|Clasificación cooperativa||E21B43/34, C10G1/045, B03D1/02, E21B41/005|
|Clasificación europea||C10G1/04E, E21B43/34, E21B41/00M|