CA2317858C - Method for the removal and recovery of the oil component from drill cuttings - Google Patents
Method for the removal and recovery of the oil component from drill cuttings Download PDFInfo
- Publication number
- CA2317858C CA2317858C CA002317858A CA2317858A CA2317858C CA 2317858 C CA2317858 C CA 2317858C CA 002317858 A CA002317858 A CA 002317858A CA 2317858 A CA2317858 A CA 2317858A CA 2317858 C CA2317858 C CA 2317858C
- Authority
- CA
- Canada
- Prior art keywords
- oil
- cuttings
- organic solvent
- recovery
- solvent
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B21/066—Separating solids from drilling fluids with further treatment of the solids, e.g. for disposal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B21/068—Arrangements for treating drilling fluids outside the borehole using chemical treatment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S507/00—Earth boring, well treating, and oil field chemistry
- Y10S507/904—Process of making fluids or additives therefor
Abstract
The oil base and other mud components are recycled, depending on the treatment procedure, for subsequent drillings.
Description
METHOD FOR THE REMOVAL AND RECOVERY OF THE OIL COMPONENT
FROM DRILL CUTTINGS.
The present invention relates to a method for the treatment of oil drill cuttings.
As is known, the function of drill mud is to strengthen the walls of the oil well hole, protect metal parts from corrosion, cool and lubricate the bit during drilling. Mud, which can be aqueous-based or oil-based, also provides pressure for keeping the geological formation intact and helps to carry the cuttings produced by the ac-tion of the bit in digging, to the surface. Oil-based mud consists of mineral oil, barite, bentonite and other addi-tives such as emulsifying agents and polymers.
In the past, drill cuttings, especially if coming from off-shore platforms, were discharged into the sea creating an unacceptable environmental impact level. There are also great problems for dispersion on land. Various methods are used for removing oil mud from cuttings: among these are washing systems with detergents, thermal and distillation systems. The main disadvantages of these methods are re-spectively linked to poor efficiency, limited safety, mainly in offshore platforms, high costs .) and plant con-struction complexity.
It has now been found that the oil part of cuttings can be removed with a method which uses a simple solvent obtaining a mud which, with the optional addition of addi-tives if necessary, can be re-used in other drillings whereas the soil can be returned to the environment.
In accordance with this, an objective of the present invention is a.method for the removal of the oil component which contaminates drill cuttings and the recovery of oil-based drilling mud, comprising the following steps:
(a) mixing said cuttings with an organic solvent in a ratio ranging from 0.5 to 2 based on the weight of the cuttings, thereby forming a mixture of a solid phase and a liquid phase comprising the organic solvent and the oil, said organic solvent being ethyl acetate or hexane;
(b) separation of the liquid phase from the solid phase;
(c) recovery of the organic solvent and oil from the-liquid phase as per step (b);
(d) further washing of the solid phase according to step (b) with the organic solvent coming from step (c);
(e) evaporation of the residual solvent coming from step (d), and the oil, and joining said oil with that of step (c) ;
(f) drying and returning of the solid phase cuttings of step (d) to the environment;
(g) use of the oil or oil-clay mixture according to step (e) as base for the formulation of drilling. ) mud.
A typical embodiment of the invention is described with reference to the block scheme illustrated in figure 1.
The cuttings coming from well drilling carried out with oil-based mud, are mixed using a tilting mixer or other systems useful for the purpose, with an organic sol-vent. Under the preferred conditions, the organic solvent is hexane or ethyl acetate.
In this respect, it should be noted that ethyl acetate is not toxic, is easily degradable and therefore environ-mentally extremely acceptable.
The optimum ratio solvent weight/cuttings weight ranges is from 0.5 to 2 and under the preferred conditions ranges from 0.5 to 1.
After appropriate mixing, the solid phase is separated from the liquid phase by centrifugation or decanting.
If the separation is carried out by centrifugation, a liquid phase is obtained from which the recovery of the solvent (steps c and e) can be effected with a fine film, scored wall evaporator, operating at atmospheric pressure or in slight depression, obtaining a boiler bottom product containing the oil fraction extracted from the ground and a head fraction consisting of the ethyl acetate extraction solvent. If the separation is carried out by simple decant-ing, a supernatant consisting of oil and clay is obtained.
The solvent can be recovered from this phase using the pro-cedure described above. In this case the tail fraction con-sists of oil and clay which can be recycled to the drilling system for the formulation of fresh mud.
The cuttings which form the solid part of step (d) can be dried, before being returned to the environment, using commercial type equipment at a temperature of about 80 C
in order to remove the extraction solvent residues.
The method according to the present invention has con-siderable economic and environmental advantages. The drill cuttings, in fact, have such characteristics as to make them environmentally compatible after treatment, whereas the oil part removed, with suitable additives, can be re-used, if necessary, as drilling mud.
The following examples provide a better understanding of the invention and should not be considered as limiting its scope in any way.
A sample of drill cuttings deriving from the use of oil-based mud, was taken from a drilling well, downstream of the coarse material separation by means of shale shak-ing.
The sample, thus consisting of drilling mud and cut-tings of a clay nature, was characterized by an oil content equal to 10 . 5% and a degree of humidity of 2.8%. 500 g of this sample were charged into a two liter glass flask equipped with a blade stirrer and treated with 500 g of ethyl acetate and stirred for 15 minutes. The suspension was centrifuged at 2,500 revs for two minutes, separating 445 g of solid to be subjected to subsequent washings.
The liquid phase, consisting of ethyl acetate and the oil extracted from the cutting, was distilled in a rotating laboratory evaporator at 90 C, 10,000 Pa, recovering ethyl acetate without hydrocarbons (gas chromatography) in the head fraction, which was used in the subsequent extraction treatment.
The tail fraction, collected in the distiller boiler, consisted of the oil-base used for the preparation of the drilling mud.
The solid residue obtained from the centrifugation was subjected to a further two washing cycles with the ethyl acetate recovered as described above, obtaining at the end of the extraction operations, the following streams:
- 435 g of dry cuttings, classifiable as non-dangerous waste, according to D.M. 5-2-98, as they contain 600 ppm of residual hydrocarbons and less than 5 ppm of aromatic polycyclic hydrocarbons, or, on the basis of the same characteristics, as reclaimed earth according to the acceptability limits for soil destined for residential/industrial use according to Tuscan Region regulation Nr. 36 of 16-3-93.
- 51 g of oil without solvent, re-usable for the prepa-ration of fresh drilling mud.= {
700 g of a sample analogous to that used in example 1, characterized by an oil content of 15% and the same water content, were treated with 700 g of ethyl acetate in a 2 liter flask equipped with a blade stirrer. After 15 minutes of stirring, the suspension was decanted for 30 minutes, the coarse fraction being deposited in the flask and the supernatant, consisting of the extraction solvent, ex-tracted oil and fine clay fraction of the cutting, being sucked up.
The supernatant was subjected to centrifugation at 2,500 revs for 2 minutes, recovering a fine solid fraction and a supernatant which was distilled under the same condi-tions described in example 1.
The solvent recovered from the distillation was added to the decanted solid in the flask, which was then ex-tracted as in the first cycle.
The separation of the solid and liquid fractions was then repeated as in the first washing cycle, recovering at the end of the operations:
FROM DRILL CUTTINGS.
The present invention relates to a method for the treatment of oil drill cuttings.
As is known, the function of drill mud is to strengthen the walls of the oil well hole, protect metal parts from corrosion, cool and lubricate the bit during drilling. Mud, which can be aqueous-based or oil-based, also provides pressure for keeping the geological formation intact and helps to carry the cuttings produced by the ac-tion of the bit in digging, to the surface. Oil-based mud consists of mineral oil, barite, bentonite and other addi-tives such as emulsifying agents and polymers.
In the past, drill cuttings, especially if coming from off-shore platforms, were discharged into the sea creating an unacceptable environmental impact level. There are also great problems for dispersion on land. Various methods are used for removing oil mud from cuttings: among these are washing systems with detergents, thermal and distillation systems. The main disadvantages of these methods are re-spectively linked to poor efficiency, limited safety, mainly in offshore platforms, high costs .) and plant con-struction complexity.
It has now been found that the oil part of cuttings can be removed with a method which uses a simple solvent obtaining a mud which, with the optional addition of addi-tives if necessary, can be re-used in other drillings whereas the soil can be returned to the environment.
In accordance with this, an objective of the present invention is a.method for the removal of the oil component which contaminates drill cuttings and the recovery of oil-based drilling mud, comprising the following steps:
(a) mixing said cuttings with an organic solvent in a ratio ranging from 0.5 to 2 based on the weight of the cuttings, thereby forming a mixture of a solid phase and a liquid phase comprising the organic solvent and the oil, said organic solvent being ethyl acetate or hexane;
(b) separation of the liquid phase from the solid phase;
(c) recovery of the organic solvent and oil from the-liquid phase as per step (b);
(d) further washing of the solid phase according to step (b) with the organic solvent coming from step (c);
(e) evaporation of the residual solvent coming from step (d), and the oil, and joining said oil with that of step (c) ;
(f) drying and returning of the solid phase cuttings of step (d) to the environment;
(g) use of the oil or oil-clay mixture according to step (e) as base for the formulation of drilling. ) mud.
A typical embodiment of the invention is described with reference to the block scheme illustrated in figure 1.
The cuttings coming from well drilling carried out with oil-based mud, are mixed using a tilting mixer or other systems useful for the purpose, with an organic sol-vent. Under the preferred conditions, the organic solvent is hexane or ethyl acetate.
In this respect, it should be noted that ethyl acetate is not toxic, is easily degradable and therefore environ-mentally extremely acceptable.
The optimum ratio solvent weight/cuttings weight ranges is from 0.5 to 2 and under the preferred conditions ranges from 0.5 to 1.
After appropriate mixing, the solid phase is separated from the liquid phase by centrifugation or decanting.
If the separation is carried out by centrifugation, a liquid phase is obtained from which the recovery of the solvent (steps c and e) can be effected with a fine film, scored wall evaporator, operating at atmospheric pressure or in slight depression, obtaining a boiler bottom product containing the oil fraction extracted from the ground and a head fraction consisting of the ethyl acetate extraction solvent. If the separation is carried out by simple decant-ing, a supernatant consisting of oil and clay is obtained.
The solvent can be recovered from this phase using the pro-cedure described above. In this case the tail fraction con-sists of oil and clay which can be recycled to the drilling system for the formulation of fresh mud.
The cuttings which form the solid part of step (d) can be dried, before being returned to the environment, using commercial type equipment at a temperature of about 80 C
in order to remove the extraction solvent residues.
The method according to the present invention has con-siderable economic and environmental advantages. The drill cuttings, in fact, have such characteristics as to make them environmentally compatible after treatment, whereas the oil part removed, with suitable additives, can be re-used, if necessary, as drilling mud.
The following examples provide a better understanding of the invention and should not be considered as limiting its scope in any way.
A sample of drill cuttings deriving from the use of oil-based mud, was taken from a drilling well, downstream of the coarse material separation by means of shale shak-ing.
The sample, thus consisting of drilling mud and cut-tings of a clay nature, was characterized by an oil content equal to 10 . 5% and a degree of humidity of 2.8%. 500 g of this sample were charged into a two liter glass flask equipped with a blade stirrer and treated with 500 g of ethyl acetate and stirred for 15 minutes. The suspension was centrifuged at 2,500 revs for two minutes, separating 445 g of solid to be subjected to subsequent washings.
The liquid phase, consisting of ethyl acetate and the oil extracted from the cutting, was distilled in a rotating laboratory evaporator at 90 C, 10,000 Pa, recovering ethyl acetate without hydrocarbons (gas chromatography) in the head fraction, which was used in the subsequent extraction treatment.
The tail fraction, collected in the distiller boiler, consisted of the oil-base used for the preparation of the drilling mud.
The solid residue obtained from the centrifugation was subjected to a further two washing cycles with the ethyl acetate recovered as described above, obtaining at the end of the extraction operations, the following streams:
- 435 g of dry cuttings, classifiable as non-dangerous waste, according to D.M. 5-2-98, as they contain 600 ppm of residual hydrocarbons and less than 5 ppm of aromatic polycyclic hydrocarbons, or, on the basis of the same characteristics, as reclaimed earth according to the acceptability limits for soil destined for residential/industrial use according to Tuscan Region regulation Nr. 36 of 16-3-93.
- 51 g of oil without solvent, re-usable for the prepa-ration of fresh drilling mud.= {
700 g of a sample analogous to that used in example 1, characterized by an oil content of 15% and the same water content, were treated with 700 g of ethyl acetate in a 2 liter flask equipped with a blade stirrer. After 15 minutes of stirring, the suspension was decanted for 30 minutes, the coarse fraction being deposited in the flask and the supernatant, consisting of the extraction solvent, ex-tracted oil and fine clay fraction of the cutting, being sucked up.
The supernatant was subjected to centrifugation at 2,500 revs for 2 minutes, recovering a fine solid fraction and a supernatant which was distilled under the same condi-tions described in example 1.
The solvent recovered from the distillation was added to the decanted solid in the flask, which was then ex-tracted as in the first cycle.
The separation of the solid and liquid fractions was then repeated as in the first washing cycle, recovering at the end of the operations:
- 402 g of cuttings containing 680 ppm of total hydro-carbons and less than 5 ppm of aromatic polycyclic hy-drocarbons, re-usable according to the'Law provisions cited above.
- 173 g of fine dry clay material, containing 500 ppm of total hydrocarbons and less than 5 ppm of aromatic polycyclic hydrocarbons, classifiable as non-dangerous waste according to the same criteria or usable for the preparation of fresh mud.
- 105 g of oil without solvent re-usable for the prepa-ration of fresh mud.
700 g of the same sample used in example 2 were treated with 700 g of ethyl acetate under the same condi-tions. After 30 minutes of sedimentation, the supernatant was sucked up and distilled directly, without effecting the separation of the fine clay material.
The solvent thus recovered was recycled to a second washing of the solid material remaining in the flask; the separation of the fractions was carried out using the same procedure adopted for the first cycle.
At the end of the operations the following products were obtained:
- 400 g of cuttings, containing 720 ppm of total hydro-carbons and less than 5 ppm of aromatic polycyclic hy-drocarbons, re-usable according to the previous crite-ria.
- 280 g of oil/clay mixture, re-usable for the formula-tion of fresh drilling mud.
EXAMPLE 4 {
Considering the fact that in many cases the mud leaves the drilling well at a temperature higher than the environ-mental value (generally between 40 and 80 C), an extraction test was carried out operating at 80 C.
For this purpose, the extraction flask was equipped with a water-cooled reflux cooler, in order to condense the solvent vapors.
The operating procedure is identical to that described in example 3, obtaining at the end of the operations:
- 394 g of cuttings, containing 500 ppm of total hydro-carbons and less than 5 ppm of aromatic polycyclic hy-drocarbons, re-usable according to the previous crite-ria.
- 283 g of oil/clay mixture, re-usable for the formula-tion of fresh drilling mud.
The same procedure is adopted as described in example 3, using n-hexane as extraction solvent.
700 grams of the same sample used in example 2 were treated with 700 g of n-hexane at 80 C in the reflux flask used in example 4.. After 30 minutes of sedimentation at room temperature, the supernatant was sucked up and dis-tilled directly, without effecting the se~aration of the fine clay material.
The solvent thus recovered was recycled to a second washing of the solid material remaining in the flask; the separation of the fractions was carried out using the same procedure adopted for the first cycle.
At the end of the operations the following products were obtained:
- 402 g of cuttings, containing 742 ppm of total hydro-carbons and less than 5 ppm of aromatic polycyclic hy-drocarbons, re-usable according to the previous crite-ria.
- 281 g of oil/clay mixture, re-usable for the formula-tion of fresh drilling mud.
- 173 g of fine dry clay material, containing 500 ppm of total hydrocarbons and less than 5 ppm of aromatic polycyclic hydrocarbons, classifiable as non-dangerous waste according to the same criteria or usable for the preparation of fresh mud.
- 105 g of oil without solvent re-usable for the prepa-ration of fresh mud.
700 g of the same sample used in example 2 were treated with 700 g of ethyl acetate under the same condi-tions. After 30 minutes of sedimentation, the supernatant was sucked up and distilled directly, without effecting the separation of the fine clay material.
The solvent thus recovered was recycled to a second washing of the solid material remaining in the flask; the separation of the fractions was carried out using the same procedure adopted for the first cycle.
At the end of the operations the following products were obtained:
- 400 g of cuttings, containing 720 ppm of total hydro-carbons and less than 5 ppm of aromatic polycyclic hy-drocarbons, re-usable according to the previous crite-ria.
- 280 g of oil/clay mixture, re-usable for the formula-tion of fresh drilling mud.
EXAMPLE 4 {
Considering the fact that in many cases the mud leaves the drilling well at a temperature higher than the environ-mental value (generally between 40 and 80 C), an extraction test was carried out operating at 80 C.
For this purpose, the extraction flask was equipped with a water-cooled reflux cooler, in order to condense the solvent vapors.
The operating procedure is identical to that described in example 3, obtaining at the end of the operations:
- 394 g of cuttings, containing 500 ppm of total hydro-carbons and less than 5 ppm of aromatic polycyclic hy-drocarbons, re-usable according to the previous crite-ria.
- 283 g of oil/clay mixture, re-usable for the formula-tion of fresh drilling mud.
The same procedure is adopted as described in example 3, using n-hexane as extraction solvent.
700 grams of the same sample used in example 2 were treated with 700 g of n-hexane at 80 C in the reflux flask used in example 4.. After 30 minutes of sedimentation at room temperature, the supernatant was sucked up and dis-tilled directly, without effecting the se~aration of the fine clay material.
The solvent thus recovered was recycled to a second washing of the solid material remaining in the flask; the separation of the fractions was carried out using the same procedure adopted for the first cycle.
At the end of the operations the following products were obtained:
- 402 g of cuttings, containing 742 ppm of total hydro-carbons and less than 5 ppm of aromatic polycyclic hy-drocarbons, re-usable according to the previous crite-ria.
- 281 g of oil/clay mixture, re-usable for the formula-tion of fresh drilling mud.
Claims (2)
1. A method for the removal of the oil component which con-taminates drill cuttings and the recovery of oil-based drilling mud, comprising the following steps:
(a) mixing said cuttings with an organic solvent in a ratio ranging from 0.5 to 2 based on the weight of the cuttings, thereby forming a mixture of a solid phase and a liquid phase comprising the organic solvent and the oil, said organic solvent being ethyl acetate or hexane;
(b) separation of the liquid phase from the solid phase;
(c) recovery of the organic solvent and oil from the liquid phase, as per step (b);
(d) washing of the solid phase according to step (b) with organic solvent coming from step (c);
(e) recovery of the organic solvent coming from step (d) and the oil, and joining said oil with that of step (c);
(f) evaporation of the residual solvent and returning of the solid phase cuttings of step (d) to the environment;
(g) use of the oil or oil-clay mixture according to step (e) as base for the formulation of drilling mud.
(a) mixing said cuttings with an organic solvent in a ratio ranging from 0.5 to 2 based on the weight of the cuttings, thereby forming a mixture of a solid phase and a liquid phase comprising the organic solvent and the oil, said organic solvent being ethyl acetate or hexane;
(b) separation of the liquid phase from the solid phase;
(c) recovery of the organic solvent and oil from the liquid phase, as per step (b);
(d) washing of the solid phase according to step (b) with organic solvent coming from step (c);
(e) recovery of the organic solvent coming from step (d) and the oil, and joining said oil with that of step (c);
(f) evaporation of the residual solvent and returning of the solid phase cuttings of step (d) to the environment;
(g) use of the oil or oil-clay mixture according to step (e) as base for the formulation of drilling mud.
2. The method according to claim 1, characterized in that in step (a) the weight ratio of the solvent- cuttings range from 0.5 to 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT1999MI001888A IT1313622B1 (en) | 1999-09-09 | 1999-09-09 | METHOD FOR REMOVAL AND RECOVERY OF THE OILY COMPONENT PERFORATION DEADRITES |
| ITMI99/A001888 | 1999-09-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2317858A1 CA2317858A1 (en) | 2001-03-09 |
| CA2317858C true CA2317858C (en) | 2008-04-29 |
Family
ID=11383585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002317858A Expired - Fee Related CA2317858C (en) | 1999-09-09 | 2000-09-08 | Method for the removal and recovery of the oil component from drill cuttings |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6550552B1 (en) |
| EP (1) | EP1083296B1 (en) |
| AT (1) | ATE280313T1 (en) |
| CA (1) | CA2317858C (en) |
| DE (1) | DE60015040D1 (en) |
| IT (1) | IT1313622B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9669340B2 (en) | 2010-07-20 | 2017-06-06 | David Robinson | Hydrocarbons environmental processing system method and apparatus |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20010956A1 (en) * | 2001-05-10 | 2002-11-10 | Enitecnologie Spa | PROCEDURE FOR THE REMOVAL OF ORGANIC POLLUTANTS FROM SEDIMENTS |
| US7306057B2 (en) * | 2002-01-18 | 2007-12-11 | Varco I/P, Inc. | Thermal drill cuttings treatment with weir system |
| US7338608B2 (en) * | 2003-09-30 | 2008-03-04 | Kemira Oyj | Solid-liquid separation of oil-based muds |
| US7520342B2 (en) * | 2006-03-23 | 2009-04-21 | M-I L.L.C. | Recovery system |
| ITMI20080581A1 (en) * | 2008-04-03 | 2009-10-04 | Eni Spa | PROCESS FOR THE TREATMENT OF OIL RESIDUES FROM THE OIL INDUSTRY |
| US8132632B2 (en) * | 2008-04-18 | 2012-03-13 | Conocophillips Company | Method for recovering valuable drilling mud materials using a binary fluid |
| US7867399B2 (en) | 2008-11-24 | 2011-01-11 | Arkansas Reclamation Company, Llc | Method for treating waste drilling mud |
| US7935261B2 (en) | 2008-11-24 | 2011-05-03 | Arkansas Reclamation Company, Llc | Process for treating waste drilling mud |
| EA024769B1 (en) * | 2009-10-06 | 2016-10-31 | Эм-Ай Эл.Эл.Си. | Method for hydrocarbon removal and recovery from drill cuttings |
| US8820438B2 (en) | 2010-10-15 | 2014-09-02 | Cutting Edge Systems Inc. | Method for cleaning oil from drill cuttings |
| WO2016044485A1 (en) * | 2014-09-17 | 2016-03-24 | Oxr, Llc | Oil extraction from drilling mud and cuttings |
| WO2017037569A1 (en) * | 2015-09-01 | 2017-03-09 | Recover Energy Services Inc. | Gas-tight centrifuge for voc separation |
| CA3016380C (en) | 2016-03-03 | 2023-03-21 | Recover Energy Services Inc. | Gas tight horizontal decanter for drilling waste solids washing |
| US10138427B2 (en) | 2016-06-22 | 2018-11-27 | Extrakt Process Solutions, Llc | Separation of hydrocarbons from particulate matter using salt and polymer |
| CA3005100C (en) | 2017-05-16 | 2024-02-06 | Recover Energy Services Inc. | Solvent blend processes and products |
| US10619434B2 (en) | 2017-06-01 | 2020-04-14 | Recover Energy Services Inc. | Wet dryer for diluent recovery |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4040866A (en) * | 1973-10-05 | 1977-08-09 | N L Industries, Inc. | Laundering of oil base mud cuttings |
| US4434028A (en) * | 1981-04-17 | 1984-02-28 | Critical Fluid Systems, Inc. | Apparatus for removing organic contaminants from inorganic-rich mineral solids |
| US4595422A (en) * | 1984-05-11 | 1986-06-17 | Cds Development, Inc. | Drill cutting disposal system |
| US4645608A (en) * | 1984-10-10 | 1987-02-24 | Sun Drilling Products, Corp. | Method of treating oil contaminated cuttings |
| US5092983A (en) * | 1986-09-12 | 1992-03-03 | 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 |
| US4836302A (en) * | 1986-12-03 | 1989-06-06 | Heilhecker Joe K | Apparatus and method for removing and recovering oil and/or other oil-based drilling mud additives from drill cuttings |
| US5005655A (en) * | 1986-12-03 | 1991-04-09 | Conoco Inc. | Partially halogenated ethane solvent removal of oleophylic materials from mineral particles |
| US5090498A (en) * | 1989-11-10 | 1992-02-25 | M-I Drilling Fluids Company | Water wash/oil wash cyclonic column tank separation system |
| US5053082A (en) * | 1990-02-28 | 1991-10-01 | Conoco Inc. | Process and apparatus for cleaning particulate solids |
| US5080721A (en) * | 1990-02-28 | 1992-01-14 | Conoco Inc. | Process for cleaning particulate solids |
| US5570749A (en) * | 1995-10-05 | 1996-11-05 | Onsite Technology, L.L.C. | Drilling fluid remediation system |
| US6177014B1 (en) * | 1998-11-06 | 2001-01-23 | J. Leon Potter | Cesium formate drilling fluid recovery process |
-
1999
- 1999-09-09 IT IT1999MI001888A patent/IT1313622B1/en active
-
2000
- 2000-09-06 DE DE60015040T patent/DE60015040D1/en not_active Expired - Lifetime
- 2000-09-06 EP EP00119106A patent/EP1083296B1/en not_active Expired - Lifetime
- 2000-09-06 AT AT00119106T patent/ATE280313T1/en not_active IP Right Cessation
- 2000-09-07 US US09/657,313 patent/US6550552B1/en not_active Expired - Fee Related
- 2000-09-08 CA CA002317858A patent/CA2317858C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9669340B2 (en) | 2010-07-20 | 2017-06-06 | David Robinson | Hydrocarbons environmental processing system method and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| ITMI991888A0 (en) | 1999-09-09 |
| ATE280313T1 (en) | 2004-11-15 |
| CA2317858A1 (en) | 2001-03-09 |
| IT1313622B1 (en) | 2002-09-09 |
| ITMI991888A1 (en) | 2001-03-09 |
| EP1083296B1 (en) | 2004-10-20 |
| EP1083296A1 (en) | 2001-03-14 |
| US6550552B1 (en) | 2003-04-22 |
| DE60015040D1 (en) | 2004-11-25 |
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