WO2017000049A1 - Composição removedora de depósitos orgânicos em poços de petróleo e gás e outros sistemas de subsuperfície e processo para remoção de depósitos orgânicos utilizando a referida composição removedora - Google Patents
Composição removedora de depósitos orgânicos em poços de petróleo e gás e outros sistemas de subsuperfície e processo para remoção de depósitos orgânicos utilizando a referida composição removedora Download PDFInfo
- Publication number
- WO2017000049A1 WO2017000049A1 PCT/BR2015/000085 BR2015000085W WO2017000049A1 WO 2017000049 A1 WO2017000049 A1 WO 2017000049A1 BR 2015000085 W BR2015000085 W BR 2015000085W WO 2017000049 A1 WO2017000049 A1 WO 2017000049A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- composition
- cumene
- oil
- organic deposits
- biodiesel
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 13
- RWGFKTVRMDUZSP-UHFFFAOYSA-N cumene Chemical compound CC(C)C1=CC=CC=C1 RWGFKTVRMDUZSP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000003225 biodiesel Substances 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000005086 pumping Methods 0.000 claims abstract 2
- 239000003921 oil Substances 0.000 claims description 20
- 235000019198 oils Nutrition 0.000 claims description 15
- 150000004702 methyl esters Chemical class 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 230000002000 scavenging effect Effects 0.000 claims description 7
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 6
- 239000008158 vegetable oil Substances 0.000 claims description 6
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 4
- OKIRBHVFJGXOIS-UHFFFAOYSA-N 1,2-di(propan-2-yl)benzene Chemical class CC(C)C1=CC=CC=C1C(C)C OKIRBHVFJGXOIS-UHFFFAOYSA-N 0.000 claims description 3
- BGNXCDMCOKJUMV-UHFFFAOYSA-N Tert-Butylhydroquinone Chemical compound CC(C)(C)C1=CC(O)=CC=C1O BGNXCDMCOKJUMV-UHFFFAOYSA-N 0.000 claims description 3
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- MRBKEAMVRSLQPH-UHFFFAOYSA-N 3-tert-butyl-4-hydroxyanisole Chemical compound COC1=CC=C(O)C(C(C)(C)C)=C1 MRBKEAMVRSLQPH-UHFFFAOYSA-N 0.000 claims description 2
- 229920000742 Cotton Polymers 0.000 claims description 2
- 244000068988 Glycine max Species 0.000 claims description 2
- 235000010469 Glycine max Nutrition 0.000 claims description 2
- 241000241602 Gossypianthus Species 0.000 claims description 2
- 235000019486 Sunflower oil Nutrition 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 238000010790 dilution Methods 0.000 claims description 2
- 239000012895 dilution Substances 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 239000002600 sunflower oil Substances 0.000 claims description 2
- 239000004250 tert-Butylhydroquinone Substances 0.000 claims description 2
- 235000019281 tert-butylhydroquinone Nutrition 0.000 claims description 2
- YIIBBSKPDHFGFG-UHFFFAOYSA-N CC(C)(C)C1C=C(CC=C1O)O Chemical compound CC(C)(C)C1C=C(CC=C1O)O YIIBBSKPDHFGFG-UHFFFAOYSA-N 0.000 claims 1
- 239000000654 additive Substances 0.000 claims 1
- 230000000996 additive effect Effects 0.000 claims 1
- 239000010779 crude oil Substances 0.000 claims 1
- 239000003129 oil well Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 15
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 14
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 12
- 239000000047 product Substances 0.000 description 11
- 239000002904 solvent Substances 0.000 description 7
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 6
- 150000002148 esters Chemical class 0.000 description 5
- 230000036541 health Effects 0.000 description 5
- 241000191291 Abies alba Species 0.000 description 4
- 235000004507 Abies alba Nutrition 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 231100001261 hazardous Toxicity 0.000 description 3
- 239000003350 kerosene Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000008096 xylene Substances 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 2
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- -1 alkyl aromatic hydrocarbon Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- AUHZEENZYGFFBQ-UHFFFAOYSA-N mesitylene Substances CC1=CC(C)=CC(C)=C1 AUHZEENZYGFFBQ-UHFFFAOYSA-N 0.000 description 2
- 125000001827 mesitylenyl group Chemical group [H]C1=C(C(*)=C(C([H])=C1C([H])([H])[H])C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000003533 narcotic effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- ODLMAHJVESYWTB-UHFFFAOYSA-N propylbenzene Chemical compound CCCC1=CC=CC=C1 ODLMAHJVESYWTB-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- FYGHSUNMUKGBRK-UHFFFAOYSA-N 1,2,3-trimethylbenzene Chemical compound CC1=CC=CC(C)=C1C FYGHSUNMUKGBRK-UHFFFAOYSA-N 0.000 description 1
- VUMCUSHVMYIRMB-UHFFFAOYSA-N 1,3,5-tri(propan-2-yl)benzene Chemical compound CC(C)C1=CC(C(C)C)=CC(C(C)C)=C1 VUMCUSHVMYIRMB-UHFFFAOYSA-N 0.000 description 1
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- 241001253177 Anisotes Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- 229940123973 Oxygen scavenger Drugs 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000007922 dissolution test Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 235000019387 fatty acid methyl ester Nutrition 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 150000002194 fatty esters Chemical class 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 150000008442 polyphenolic compounds Chemical class 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 235000020777 polyunsaturated fatty acids Nutrition 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
- C07C15/02—Monocyclic hydrocarbons
- C07C15/085—Isopropylbenzene
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2200/00—Components of fuel compositions
- C10L2200/04—Organic compounds
- C10L2200/0461—Fractions defined by their origin
- C10L2200/0469—Renewables or materials of biological origin
- C10L2200/0476—Biodiesel, i.e. defined lower alkyl esters of fatty acids first generation biodiesel
Definitions
- the present invention relates to an organic deposit removal composition in oil and gas wells and other subsurface systems. More particularly, the present invention relates to a scavenging composition comprising mixtures of isopropylbenzene and methyl esters of unsaturated vegetable oils (biodiesel). The invention also relates to an organic deposit removal process utilizing said removing composition.
- Oil production occurs in Brazil primarily in offshore fields, derived from post-salt and pre-salt reservoir rocks that have as a common feature to be found at great depths below the sea floor. This soil, in turn, lies under water columns that can exceed 3,000 meters in length.
- a restoration of the flow is made.
- the restoration of the flow is accomplished by injecting from the UEP a fluid to dissolve the deposit or even by mechanical intervention.
- This restorative fluid which is primarily intended to be a paraffinic phase solvent and an asphaltic phase suspensor / stabilizer, is injected at high pressure from the UEP to at least Christmas tree level. It is not uncommon for the full length of the riser to be filled, as well as from the production pipe to the deepest section of the well.
- the cleaning fluid acts in situ for a period of time, cleaning the inside of the pipes and descaling accessory equipment such as instruments and valves. After the action time, the fluid returns to the surface, where it will desirably arrive together with most of the deposits responsible for the loss of productivity. However, after being used one or more times, this fluid loses its potential solvent and surface restorer so that its destination is the disposal by incorporation into the oil produced.
- benzene molecules are known to be carcinogenic and cold flammable.
- Methylbenzene also known as toluene, has great action against organic deposits, but this compound has a strong narcotic effect and is also too volatile and flammable in cold weather.
- Increasing the number of carbons of these alkylbenzenes to n 8 gives the products known as AB-8 for xylene isomers and ethylbenzene.
- the performance of these products is excellent and their health risks are lower than those of benzene. However, they are volatile and gasoline in appearance and absolutely flammable under deck conditions.
- Kerosene in turn, is a product that is safe from its cold flammability. Its flash point is set by the ASTM D-56 method at 46 ° C. It is safer for users' health and the environment when compared to aromatics. However, kerosene is generally not effective in cleaning up problematic scale. On the positive side, one notices only its almost unlimited availability, low cost and ease.
- US 4,925,497 discloses a paraffin and paraffin-like removal process from oilfield equipment which comprises washing said equipment with a solvent mixture comprising an aromatic hydrocarbon selected from the group consisting of toluene, xylene, mesitylene and mixtures thereof and petroleum naphtha, the weight ratio of said aromatic hydrocarbon to naphtha being about 10/90 to about 90/10.
- SU1326600A1 proposes the use of a composition for removing asphalt, resin and wax deposits which comprises 5 to 50 wt.% Anisot, 0.1 to 1.0 wt.% Monoalkyl esters. of polyethylene glycol and 49.0 to 94.9% by weight of alkyl aromatic hydrocarbon mixtures consisting of polyalkibenzenes from the production of ethylbenzene or polypropylbenzenes from the production of isopropylbenzene.
- SU1685967A1 discloses a composition for the removal of asphaltene, resin and paraffin deposits containing 40 to 75% by weight of condensed hydrocarbon and the remainder of a polyalkylbenzene fraction obtained as a byproduct of isopropylbenzene production.
- US4090562A describes a method and composition for stimulating oil production in a producing well by removing organic deposits.
- the solvent composition contains 45 to 85% by volume of an aliphatic hydrocarbon, 5 to 45% by volume of benzene, toluene, ethylbenzene, cumene, mesitylene or propylbenzene, 0.56% by volume of ethylene glycol monobutyl ether or diethylene glycol monomethyl ether and 1 to 15 vol% methanol, propane, isopropanol or butanol.
- the state of the art utilizes complex mixtures containing aromatic hydrocarbons for removal of organic deposits and scale.
- None of the prior art documents teaches a simple, easy-to-obtainable, high-performance scavenging and organic scavenging composition, resulting in a faster, economical and safer removal operation.
- the present invention aims at solving the prior art problems described above in a practical and efficient manner.
- the present invention provides a scavenging composition
- a scavenging composition comprising an aromatic ingredient (A) consisting of pure cumene (isopropylbenzene of greater than 99.9% purity) or contaminated with up to 10 mass% diisopropylbenzenes (DIPB) and up to 3% mass of triisopropylbenzenes (TIPB) based on the mass of cumene and a biodiesel ingredient (B) consisting of oil methyl esters vegetables rich in polyunsaturated.
- A aromatic ingredient
- DIPB diisopropylbenzene of greater than 99.9% purity
- TIPB triisopropylbenzenes
- the present invention further provides a process for removing organic deposits and scale using said removal composition.
- the present invention provides an innovative removing composition, presented as a single product, useful in removing organic deposits and scale commonly found in oil and gas wells.
- the scavenging composition of the present invention comprises (A) from 75 to 97.5 mass% of pure cumene (isopropylbenzene of purity above 99.9%) or contaminated with up to 10 mass% of diisopropylbenzene and up to 3%. 1, 3,5-triisopropylbenzene, based on the total mass of benzene and (B) from 2.5 to 25% by weight of biodiesel, which consists of methyl esters derived from polyunsaturated rich vegetable oils.
- Biodiesel is produced by transesterification of vegetable oils resulting in glycerol and fatty acid methyl esters.
- antioxidant additives such as 2,6-di-tert-butyl-4-methyl-phenol (BHT), 2,5-di-tert. butyl hydroquinone (TBHQ), 3-tert-butyl-4-hydroxyanisole (BHA) whose concentrations range from 100 to 1000 ppm so that long chains of polyunsaturated fatty acid esters do not react with oxygen to form oxygenated compounds .
- Pure cumene has a melting point of - 96 ° C, a boiling point of 152 ° C, a flashpoint of 43 ° C and a viscosity of 0.777 cP at 21 ° C. Therefore, one of the purposes of biodiesel in the removing composition is to increase the flash point of the composition above 46 ° C, since before its degradation biodiesel has a flash point above 115 ° C and even after its degradation, its point of glow is not less than 100 ° C, substantially higher than the flash point of pure cumene.
- Biodiesel from polyunsaturated oils has double bonds at specific positions, so that they easily oxidize with air oxygen, generating fatty peroxides, so biodiesel also has the function of oxygen scavenger.
- One of the functions of adding biodiesel to cumene is to function as a sacrificial oxidant to preserve cumene from eventual oxidation.
- biodiesel promotes polarity and electrical conductivity. Because paraffins are closely interspersed with polar macromolecules such as resin and asphaltenes molecules, biodiesel ester group polarization creates forces of interaction with complexed metals in asphaltenes without impairing the potent solvency of the aromatic ring over hydrocarbons in general. In addition, since its price is lower than the cumene price, it is used as a cargo to reduce solvent cost.
- Blending with biodiesel should initially be restricted to the objective of raising the flash point of the isopropylbenzene methyl ester removal mixture to the point considered safe and desirable.
- the flash point of the methyl ester which varies according to the type of vegetable oil used, the mixing ratio of the methyl ester varies.
- Compositions containing above 25 wt.% Biodiesel mass and less than 75 wt.% Cumene have generally been found to have poor removal performance.
- feedstock for the formulation of biodiesel are methyl esters of soybean, cotton and sunflower oil.
- the cold flow properties of the ester vary greatly according to the nature of the vegetable oil, so that more unsaturated fatty esters are advantageously employed.
- a preferably used ester is the soybean oil ester, so that commercial methyl soiate is a suitable stream for the proposed composition.
- the flash point of an already degraded methyl soak remains above 100 ° C, which makes it useful in providing the cumene with lower cold flammability.
- the present invention also provides a process for removing organic deposits and scale in oil production.
- the removing composition of the present invention is carried to the oil rigs and is pumped through the riser and / or umbilical peripheral tubes and can be introduced into the internal well structures and formation through the production tube.
- composition is pumped through the well production ridge to fill the entire area of interest, which can range from the lowest region of the production column adjacent to the producing rock zone to the wet Christmas tree to the bottom. connection point between the rigid or flexible production pipe making up the riser and the UEP.
- the required contact time of the composition depends on the characteristics of the deposits, and a time of about 24 hours is generally applied, when more than 50% of the deposits will have been solubilized and surface driven by producing the removing composition column. Following the expulsion of fluids, along with solubilized deposits, well production takes place without interruption and the removal composition can be reused or mixed with the crude produced and then proceeded to the oil refinery where it will be redistilled along with the diesel streams. vacuum, undergoing infinite dilution without prejudice to refining and processing activity.
- the following are examples which correspond to the scope of the present invention, as well as comparative examples illustrating the state of the art. It is emphasized that the following description will depart from preferred embodiments of the invention. As will be apparent to any person skilled in the art, however, the invention is not limited to such particular embodiments.
- the organic deposit was homogenized, which consists of the steps of: i) adding petroleum to the organic deposit in question, if it is not of adequate consistency for extrusion; and (ii) promote the homogenization of the organic deposit manually or with the aid of a TURRAX mixer until it is suitable for extrusion.
- the extruder cylinder was filled until the output of a sample fillet was observed, indicating that the cylinder is perfectly compacted.
- the perforated cap was replaced by the extruder nozzle and specimen-sized specimens fixed on the extruder nozzle were made. After this, each specimen was cut with the aid of an electric device and the specimens were placed in a petri dish.
- the specimens were weighed, transferred to Schott flasks and 50 mL of solvent was added.
- the vials were then placed in a shake bath at 15 ° C, shaking at about 20 rpm for the time required for the assay (6h, 24h and 64h).
- the mixture was then filtered through Millipore with previously weighed mesh and the residue was washed with brief spray of methyl isobutyl ketone (MIBK) cooled to -15 ° C.
- MIBK methyl isobutyl ketone
- the waste mesh was transferred to a stainless steel tray and vacuum oven for 24 hours at 50 ° C.
- the material was removed from the greenhouse and allowed to cool to room temperature to weigh the residue. The result was expressed as a percentage of dissolution.
- composition of the present invention has satisfactory performance for removal of organic deposits compared to the most hazardous and scarce solvents AB-9s.
- the removing composition has a low health risk and, due to its higher flash point, is safer from cold flammability, and has satisfactory performance in the removal of organic deposits and scale.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Detergent Compositions (AREA)
- Cleaning In General (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2015401031A AU2015401031B2 (en) | 2015-06-12 | 2015-06-12 | Composition for removing organic deposits from oil and gas wells and other subsurface systems, and method for removing organic deposits using the removal composition |
US15/538,916 US10351757B2 (en) | 2015-06-12 | 2015-06-12 | Composition for removing organic deposits from oil and gas wells and other subsurface systems and method for removing organic deposits using the remover composition |
PCT/BR2015/000085 WO2017000049A1 (pt) | 2015-06-12 | 2015-06-12 | Composição removedora de depósitos orgânicos em poços de petróleo e gás e outros sistemas de subsuperfície e processo para remoção de depósitos orgânicos utilizando a referida composição removedora |
BR112017012041-0A BR112017012041B1 (pt) | 2015-06-12 | 2015-06-12 | Composição removedora de depósitos orgânicos em poços de petróleo e gás e outros sistemas de subsuperfície e processo para remoção de depósitos orgânicos utilizando a referida composição removedora |
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PCT/BR2015/000085 WO2017000049A1 (pt) | 2015-06-12 | 2015-06-12 | Composição removedora de depósitos orgânicos em poços de petróleo e gás e outros sistemas de subsuperfície e processo para remoção de depósitos orgânicos utilizando a referida composição removedora |
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WO2017000049A1 true WO2017000049A1 (pt) | 2017-01-05 |
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PCT/BR2015/000085 WO2017000049A1 (pt) | 2015-06-12 | 2015-06-12 | Composição removedora de depósitos orgânicos em poços de petróleo e gás e outros sistemas de subsuperfície e processo para remoção de depósitos orgânicos utilizando a referida composição removedora |
Country Status (4)
Country | Link |
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US (1) | US10351757B2 (pt) |
AU (1) | AU2015401031B2 (pt) |
BR (1) | BR112017012041B1 (pt) |
WO (1) | WO2017000049A1 (pt) |
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RU2770957C1 (ru) * | 2021-07-22 | 2022-04-25 | Ольга Владимировна Ружанская | Состав для очистки нефтепромыслового оборудования и нефтеналивных судов от отложений |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2753939A (en) * | 1954-03-15 | 1956-07-10 | Union Oil Co | Removal of waxy sludges from pipelines and oil wells |
US4090562A (en) * | 1973-12-07 | 1978-05-23 | Union Oil Company Of California | Method and solvent composition for stimulating the production of oil from a producing well |
US20030045605A1 (en) * | 2001-04-30 | 2003-03-06 | Thompson Joseph E. | Ester/monoester copolymer compositions and methods of preparing and using same |
US20060142172A1 (en) * | 2002-10-21 | 2006-06-29 | Cioletti Kenneth R | Cleaning compositions for oil-gas wells, well lines, casings, equipment, storage tanks, etc., and method of use |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1326600A1 (ru) | 1983-10-06 | 1987-07-30 | Башкирский государственный научно-исследовательский и проектный институт нефтяной промышленности | Состав дл удалени асфальтеносмолопарафиновых отложений |
US4925497A (en) | 1987-10-13 | 1990-05-15 | Petrolite Corporation | Solvent for paraffin removal from oilfield equipment |
SU1685967A1 (ru) | 1988-12-29 | 1991-10-23 | Конструкторское бюро производственного объединения "Саратовнефтегаз" | Состав дл удалени асфальтеносмолопарафиновых отложений |
IT1399512B1 (it) * | 2010-04-23 | 2013-04-19 | Eni Spa | Procedimento per la rimozione di depositi da un pozzo a olio o a gas, e/o dalle strutture di superficie, e/o dalle apparecchiature ad esso correlate, e/o da formazioni contenenti idrocarburi |
-
2015
- 2015-06-12 US US15/538,916 patent/US10351757B2/en not_active Expired - Fee Related
- 2015-06-12 WO PCT/BR2015/000085 patent/WO2017000049A1/pt active Application Filing
- 2015-06-12 BR BR112017012041-0A patent/BR112017012041B1/pt active IP Right Grant
- 2015-06-12 AU AU2015401031A patent/AU2015401031B2/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2753939A (en) * | 1954-03-15 | 1956-07-10 | Union Oil Co | Removal of waxy sludges from pipelines and oil wells |
US4090562A (en) * | 1973-12-07 | 1978-05-23 | Union Oil Company Of California | Method and solvent composition for stimulating the production of oil from a producing well |
US20030045605A1 (en) * | 2001-04-30 | 2003-03-06 | Thompson Joseph E. | Ester/monoester copolymer compositions and methods of preparing and using same |
US20060142172A1 (en) * | 2002-10-21 | 2006-06-29 | Cioletti Kenneth R | Cleaning compositions for oil-gas wells, well lines, casings, equipment, storage tanks, etc., and method of use |
Also Published As
Publication number | Publication date |
---|---|
BR112017012041A2 (pt) | 2018-07-03 |
AU2015401031B2 (en) | 2020-01-23 |
US20180086967A1 (en) | 2018-03-29 |
AU2015401031A1 (en) | 2018-02-08 |
BR112017012041B1 (pt) | 2022-01-25 |
US10351757B2 (en) | 2019-07-16 |
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