WO2022203496A1 - Seawater-based direct emulsion fluid with an inverse oil/water ratio for areas with a low pressure gradient and high temperature - Google Patents
Seawater-based direct emulsion fluid with an inverse oil/water ratio for areas with a low pressure gradient and high temperature Download PDFInfo
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- WO2022203496A1 WO2022203496A1 PCT/MX2022/050029 MX2022050029W WO2022203496A1 WO 2022203496 A1 WO2022203496 A1 WO 2022203496A1 MX 2022050029 W MX2022050029 W MX 2022050029W WO 2022203496 A1 WO2022203496 A1 WO 2022203496A1
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- Prior art keywords
- component
- drilling
- fluid
- seawater
- completion
- Prior art date
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- 239000012530 fluid Substances 0.000 title claims abstract description 77
- 239000000839 emulsion Substances 0.000 title claims abstract description 46
- 239000013535 sea water Substances 0.000 title claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 23
- 238000005553 drilling Methods 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000008439 repair process Effects 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims description 15
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 230000000994 depressogenic effect Effects 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Inorganic materials [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 239000011780 sodium chloride Substances 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L magnesium chloride Substances [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 4
- 239000001103 potassium chloride Substances 0.000 claims description 4
- 235000011164 potassium chloride Nutrition 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000001110 calcium chloride Substances 0.000 claims description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 235000010755 mineral Nutrition 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims 1
- 239000003995 emulsifying agent Substances 0.000 abstract description 19
- 239000002283 diesel fuel Substances 0.000 abstract description 6
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000012071 phase Substances 0.000 description 18
- 239000003112 inhibitor Substances 0.000 description 17
- 239000003921 oil Substances 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 11
- 239000000047 product Substances 0.000 description 11
- 239000013505 freshwater Substances 0.000 description 9
- 235000002639 sodium chloride Nutrition 0.000 description 9
- 238000009472 formulation Methods 0.000 description 8
- 239000003638 chemical reducing agent Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 238000005755 formation reaction Methods 0.000 description 6
- 239000003129 oil well Substances 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 239000003352 sequestering agent Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000000440 bentonite Substances 0.000 description 4
- 229910000278 bentonite Inorganic materials 0.000 description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 4
- 239000004927 clay Substances 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000008346 aqueous phase Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 2
- 230000003113 alkalizing effect Effects 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003225 biodiesel Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000007764 o/w emulsion Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229910001414 potassium ion Inorganic materials 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 229920001059 synthetic polymer Polymers 0.000 description 2
- 239000003017 thermal stabilizer Substances 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- IGFHQQFPSIBGKE-UHFFFAOYSA-N 4-nonylphenol Polymers CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004908 Emulsion polymer Substances 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 241000735215 Lepidocybium flavobrunneum Species 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 240000007817 Olea europaea Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 description 1
- 244000166071 Shorea robusta Species 0.000 description 1
- 235000015076 Shorea robusta Nutrition 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 239000004280 Sodium formate Substances 0.000 description 1
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229920001222 biopolymer Polymers 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- ATZQZZAXOPPAAQ-UHFFFAOYSA-M caesium formate Chemical compound [Cs+].[O-]C=O ATZQZZAXOPPAAQ-UHFFFAOYSA-M 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910001622 calcium bromide Inorganic materials 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- WGEFECGEFUFIQW-UHFFFAOYSA-L calcium dibromide Chemical compound [Ca+2].[Br-].[Br-] WGEFECGEFUFIQW-UHFFFAOYSA-L 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000003874 inverse correlation nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 235000011147 magnesium chloride Nutrition 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Polymers CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 description 1
- 239000008601 oleoresin Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 229920005614 potassium polyacrylate Polymers 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 description 1
- 235000019254 sodium formate Nutrition 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 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
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/26—Oil-in-water emulsions
-
- 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
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/26—Oil-in-water emulsions
- C09K8/28—Oil-in-water emulsions containing organic additives
Definitions
- Low density fluids are direct emulsions that were initially prepared using the following formulation:
- Table 1 Formulation initial design of the direct emulsion system of the year 1982.
- 7.- CN102504773A Saturated salt water drilling fluid for deep wells and extra-deep wells. It is a document that emphasizes a system of fluids based on Seawater saturated with Salts with a series of components designed for Deep Water wells, among the components are: Bentonite, Polyanionic Cellulose, Lignosulfonates, Lignosulfonated Resins, Asphalts and Emulsified Paraffins . 8.- CN101148579A High temperature resistant circulating micro-foam drilling fluid or completion fluid. Document that emphasizes a salty fluid, composed of Microbubbles based on bentonite, foaming agent, foam stabilizer, filter reducer, viscosifier, among others.
- a brine-based fluid which can be: Sodium Chloride, Potassium Chloride, Calcium Chloride, Magnesium Chloride, Ammonium Chloride, Zinc Chloride, Calcium Bromide, Sodium Bromide, Bromide of Zinc, Cesium Formate, Sodium Formate, stabilized the system rheologically with Polyvinyl and Polymerized Amide / Carboxylic Acid Copolymer among others.
- MATERIAL Document that emphasizes a composition of Sealant Polymers for an Inverse Emulsion.
- Our invention is a Direct Emulsion whose continuous phase is SEAWATER and the dispersed phase is DIESEL OIL in a proportion of 70% to 50% Seawater and 30% to 50% Oil.
- Diesel effected the stability of the emulsion by an Emulsifying Agent; where the Emulsifying Agent is internally modified; Said modification was carried out both by affinity and in its chemical structure, resulting in an emulsion capable of withstanding extremely harsh environments and background temperatures of up to 170 °C.
- Our formulation is state-of-the-art and is focused on eliminating the disadvantages of conventional direct emulsions, reducing costs and operating times in the various jobs to which it is subjected, capable of technically competing against low-density inverse emulsions, as well as fluids. inhibited polymers.
- Emulsion is state-of-the-art and is focused on eliminating the disadvantages of conventional direct emulsions, reducing costs and operating times in the various jobs to which it is subjected, capable of technically competing against low-density inverse emulsions, as well as fluids. inhibited polymers.
- An emulsion is a liquid made up of two substances that are not mixed. One of them is always hydrophilic (miscible with water) and the other is lipophilic (miscible with oil or fat). An emulsion will always be composed of: Aqueous Phase, Oily Phase and Emulsifier. Emulsifiers Classification:
- Emulsion Stability depends on:
- our formulation has an alkalizing agent for the aqueous phase and which, in turn, favors the inhibition of reactive shale, in addition to being an H2S sequestrant.
- Our invention also has a thermopolymerized material that makes the functions as a filtrate reducer, a high molecular weight biopolymer that functions as a viscosifier, an amphoteric emulsifier and shale inhibitors based on mixtures of polyethylene glycol and potassium salts.
- Each cubic meter is formulated by: 425 liters of seawater, adjusting the pH with 6-10 liters of CHS-BUFFER, Alkalinizer/Sequestrant of Hydrogen Sulfide/Shale Inhibitor (Monoethanolamine C 2 H 7 NO), 15-20 kilograms of CHS-BUFFER, Alkalinizer/Sequestrant of Hydrogen Sulfide/Shale Inhibitor (Monoethanolamine C 2 H 7 NO), 15-20 kilograms of CHS-
- BASIC PROCESS FOR THE MANUFACTURING OF THE FLUID a.Add the calculated amount of seawater in dams or tanks. b. While adding the seawater, add CHS-BUFFER (6-10) lts/M 3 (Alkalizing/Hydric Sulfide Sequestrant/Shale Inhibitor), simultaneously add the CHS-Inhibitor (15-20) kg/M 3 ( Clay inhibitor) in the concentration calculated according to the conditions of the interval to intervene. c.Add the component CHS-SD (8-15) kg/M 3 (Filtration reducer) according to the calculation. d.Add the material CHS-PRF (4-8) kg/M 3 (Viscosifier and thermal stabilizer) according to the calculation.
- This formulation is capable of withstanding contaminants such as: Inverse emulsion, C0 2 and H 2 S gases, crude oil from formation, oily waters, packing fluids, calcium brines, sodium brines, potassium brines, pothole residues, pipe detachers, residues demagnetizing potholes and rainwater.
- Product 1 Seawater. We use its minerals (sodium, magnesium, calcium and potassium chloride) as well as its natural characteristics, so that together they interact in favor of the fluid system, the effective amount of product 1 is between 80% and 20% by volume.
- Product 2 CHS-Inhibitor, Inhibitor of clays, Potassium Chloride, material that performs the chemical inhibition of clays through cation exchange, displacing to the sodium ion of the shales by the potassium ion, K + ions adhere to the clay surfaces and give stability to the shale exposed to the drilling fluids by the bit. The ions also help hold the drill cuttings together, minimizing dispersion into finer particles.
- Product 3 CHS-Buffer, Alkalinizer/Sulfuric Sequestrant/Shale Inhibitor, Monoethanolamine, adjusts the pH of seawater and acts as a sequestrant when gases such as C0 2 and H 2 S are present; Likewise, it provides ammonium salts which contribute to the cationic replacement of sodium in clays, stabilizing the walls of the well.
- Product 4 CHS-SD, Filtration Reducer, mixture of sodium carboxymethyl cellulose polyanionic cellulose plus starches and calcium carbonate, thermally stabilized with a polyglycol, with the secondary function of generating thermal stability to the system.
- CHS-PRF Viscosifier
- Product 5 is a mixture of hydroxyethyl cellulose with oil-soluble resins, designed to share affinity to both the aqueous phase and the lipophilic phase, they intertwine with product No 4 to form a network and generate viscosity
- this component forms a film around the air bubbles, making the bubble rigid, preventing it from degrading through hydrostatic pressure, trapping air and thus achieving densities of less than 1.00 g/cc. broad spectrum where it performs its function is at the oil/water interface, forming a protective barrier around the droplets of the dispersed phase.
- CHS-Emul LD double affinity amphoteric emulsifier
- HLB Hydrophilic Lipophilic Balance
- Product 7 Diesel, is the dispersed phase, provides the system with the necessary lubricity and low density to be able to intervene in depressed areas, it consists of 20% to 30% by volume. By reducing the volume of use of product 7, it reduces the price end of the fluid system comparing it against the conventional system that has been used.
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Colloid Chemistry (AREA)
Abstract
AIM OF THE INVENTION: The aim of the invention is to use natural resources in offshore well drilling, repair and completion operations, eliminating the use of borehole water, reducing the use of diesel oil, and therefore reducing the use of supply vessels, leading to a reduction in costs, and also to continue to operate even under adverse weather conditions. Independently of its use in offshore operations, the invention can also be used in onshore wells. DESCRIPTION OF THE INVENTION: The invention relates to a system comprising low-density direct emulsion fluids, modified in the continuous phase, dispersed phase, an emulsifier and additional heat-polymerised materials to withstand high temperatures, offering excellent well stability at a low cost. USES AND TECHNICAL SOLUTION PROVIDED BY THE INVENTION: The invention is intended for use in drilling, repair and completion works on offshore and onshore wells, in extremely harsh environments and at high temperatures.
Description
FLUIDO DE EMULSION DIRECTA BASE AGUA DE MAR CON RELACION ACEITE/AGUA INVERTIDA PARA ZONAS DE BAJO GRADIENTE DE PRESION Y ALTA TEMPERATURA DIRECT EMULSION FLUID BASED ON SEAWATER WITH INVERTED OIL/WATER RATIO FOR ZONES WITH LOW PRESSURE GRADIENT AND HIGH TEMPERATURE
DESCRIPCION DESCRIPTION
Es un sistema de fluidos de baja densidad de emulsión directa base agua de mar modificado en su fase continua, fase dispersa, emulgente y materiales complementarios termopolimerizados para soportar altas temperaturas, ofreciendo una excelente estabilidad del pozo a un bajo costo, capaz de soportar contaminantes internos y externos. It is a system of low-density seawater-based direct emulsion fluids modified in its continuous phase, dispersed phase, emulsifier and thermopolymerized complementary materials to withstand high temperatures, offering excellent wellbore stability at a low cost, capable of withstanding internal contaminants. and external.
OBJETIVO: OBJECTIVE:
Para trabajos de Petróleo y Gas en Perforación, Reparación y Terminación de Pozos Marinos, nos enfocamos en diseñar un Fluido de Baja Densidad de Emulsión Directa Base Agua de Mar con la finalidad de reducir costos operativos, aprovechando el recurso existente en Costa-Fuera (Agua de Mar), eliminando la utilización del agua de perforación y como consecuencia el apoyo de barcos abastecedores; de igual manera ajustamos la relación aceite/agua disminuyendo la utilización de aceite diesel con valores de 50/50 hasta 30/70, este nuevo diseño será ser capaz de soportar temperaturas de fondo hasta de 170 °C y tener la capacidad de inhibir las arcillas reactivas en el proceso de perforación, también tiene la capacidad de transportar los granos de sal para la colocación de Tapones de Sal sin alterar sus propiedades fisicoquímicas, permite continuar las operaciones de perforación, reparación y terminación de pozos en condiciones climáticas adversas ya que la logística es mínima por la utilización de agua de mar en su preparación.
Independientemente a la utilización del agua de mar y el ajuste de la Relación Aceite Agua, también se ajustaron térmicamente el polímero reductor de filtrado y viscosificante para poder alcanzar temperaturas de trabajo hasta 170°C, Chemiservis de México es la primera empresa en México en probarlo exitosamente a nivel laboratorio y certificarlo ante un laboratorio acreditado por la EMA, (Entidad Mexicana de Acreditación), utilizando la Norma existente para fluidos base agua (NRF-301-PEMEX-2012 "Sistemas de Baja Densidad empleados en Perforación, Terminación y Mantenimiento de Pozos"); para el caso de nuestro diseño no aplica esta norma ya que la base de nuestro fluido es agua de mar y para la norma en mención es con agua dulce, curricularmente sometimos nuestro sistema a esa norma con la finalidad de tener parámetros comparativos. For Oil and Gas works in Drilling, Repair and Completion of Marine Wells, we focus on designing a Low Density Fluid of Direct Emulsion Based on Seawater with the purpose of reducing operating costs, taking advantage of the existing resource in Offshore (Water de Mar), eliminating the use of drilling water and, as a consequence, the support of supply ships; Similarly, we adjusted the oil/water ratio, reducing the use of diesel oil with values from 50/50 to 30/70. This new design will be able to withstand bottom temperatures of up to 170 °C and have the ability to inhibit clay. reactive in the drilling process, it also has the capacity to transport the grains of salt for the placement of Salt Plugs without altering their physicochemical properties, it allows the drilling, repair and completion of wells to continue in adverse weather conditions since the logistics is minimal due to the use of seawater in its preparation. Regardless of the use of seawater and the adjustment of the Oil-Water Ratio, the filtering and viscosifying reducing polymer was also thermally adjusted to be able to reach working temperatures of up to 170°C. Chemiservis de México is the first company in Mexico to test it. successfully at the laboratory level and certify it before a laboratory accredited by the EMA, (Mexican Accreditation Entity), using the existing Standard for water-based fluids (NRF-301-PEMEX-2012 "Low Density Systems used in Drilling, Completion and Maintenance of Wells"); In the case of our design, this norm does not apply since the base of our fluid is seawater and for the norm in question it is with fresh water, curricularly we subject our system to that norm in order to have comparative parameters.
ANTECEDENTES . BACKGROUND .
Desde el año de 1982 en Petróleos Mexicanos se realizaron investigaciones de diferentes fluidos tanto base agua y base aceite con el objetivo de lograr solucionar el problema de la pérdida de circulación en yacimientos depresionados, logrando obtener un fluido de emulsión directa de baja densidad con propiedades reológicas y tixotrópicas superiores a los fluidos con que se contaba en ese momento, solucionando gran parte de la problemática de pérdidas de circulación en los pozos en mantenimiento en yacimientos depresionados. El diseño y aplicación de este fluido fue en septiembre de 1982 señalando que su preparación es con agua de perforación o agua dulce.Since 1982, at Petróleos Mexicanos, research has been carried out on different water-based and oil-based fluids with the aim of solving the problem of lost circulation in depressed reservoirs, obtaining a low-density direct emulsion fluid with rheological properties. and thixotropic fluids that were superior to the fluids available at that time, solving a large part of the problem of lost circulation in wells under maintenance in depressed reservoirs. The design and application of this fluid was in September 1982 indicating that its preparation is with drilling water or fresh water.
(Articulo extraído COLAPER XII, México 2000). Los fluidos de baja densidad son emulsiones directas que inicialmente se prepararon utilizaban la siguiente formulación:
(Article extracted COLAPER XII, Mexico 2000). Low density fluids are direct emulsions that were initially prepared using the following formulation:
Tabla 1: Formulación diseño inicial del sistema de emulsión directa del año 1982. Table 1: Formulation initial design of the direct emulsion system of the year 1982.
Se realizo una búsqueda técnica para encontrar algún proyecto relacionado a esta invención, hallando 23 resultados, los cuales tienen diferentes particularidades. Nuestro desarrollo es innovador ya que utiliza el agua de mar como base en su preparación y reduce el consumo de aceite diesel lo cual trae como consecuencia una reducción económica considerable independientemente a las propiedades fisicoquímicas que se consiguen lo cual permite su utilización en zonas depresionadas o en la brecha. Los resultados encontrados en la búsqueda son: A technical search was carried out to find a project related to this invention, finding 23 results, which have different characteristics. Our development is innovative since it uses seawater as a base in its preparation and reduces the consumption of diesel oil, which results in a considerable economic reduction regardless of the physicochemical properties that are achieved, which allows its use in depressed areas or in the gap. The results found in the search are:
1.- CN104650833A Oil-in-water emulsión drilling fluid and preparation method thereof | An oil-in-water emulsión drilling fluid and preparation method thereof. Documento que hace énfasis en la preparación de un fluido Bentonitico Disperso base agua dulce o industrial con adición de un aceite en proporción de 10 a 40 % en volumen emulsionando este aceite con ayuda del emulgente en proporción de 1 a 4 % por volumen. 1.- CN104650833A Oil-in-water emulsion drilling fluid and preparation method thereof | An oil-in-water emulsion drilling fluid and preparation method thereof. Document that emphasizes the preparation of a Dispersed Bentonite fluid based on fresh or industrial water with the addition of an oil in a proportion of 10 to 40% by volume, emulsifying this oil with the help of the emulsifier in a proportion of 1 to 4% by volume.
2.- MX2017012693A FLUIDOS DE PERFORACION CON CONCENTRACION DE FASE DISPERSA ALTA. 2.- MX2017012693A DRILLING FLUIDS WITH HIGH DISPERSED PHASE CONCENTRATION.
Documento que hace énfasis a un fluido de perforación compuesto de una concentración de 0.05-0.5 de sólidos de gravedad extremadamente baja a base de esferas huecas de piedra de olivo, polietileno, polipropileno, poliestireno, policarbonatos, grafitos, gomas naturales y / o poliacrilonitrilos.
3.- CN105349123A Oil-in-water drilling fluid taking biodiesel as dispersión phase as well as preparation method and application thereof. Document that emphasizes a drilling fluid composed of a concentration of 0.05-0.5 of extremely low gravity solids based on hollow spheres of olive stone, polyethylene, polypropylene, polystyrene, polycarbonates, graphites, natural rubbers and / or polyacrylonitriles. 3.- CN105349123A Oil-in-water drilling fluid taking biodiesel as dispersion phase as well as preparation method and application thereof.
Documento que hace énfasis a una Emulsión Directa donde la Fase Continua es Agua Dulce o Industrial y la Fase Dispersa es BIODIESEL más la adición de Bentonita, Carbonato de Sodio, Hidróxido de Sodio, Emulsificante Primario y Emulsificante Auxiliar, Inhibidor de Lutitas y Reductor de Filtrado. Document that emphasizes a Direct Emulsion where the Continuous Phase is Fresh or Industrial Water and the Dispersed Phase is BIODIESEL plus the addition of Bentonite, Sodium Carbonate, Sodium Hydroxide, Primary Emulsifier and Auxiliary Emulsifier, Shale Inhibitor and Filtration Reducer .
4.- CN101979457A Seawater-based solid phase-free environment-friendly drilling and completion fluid. Documento que enfatiza sobre un fluido base Agua de Mar libre de solidos compuesto por: Agua de Mar, Sal como agente de puenteo, Inhibidor de Lutitas, Lubricante, Inhibidor de Corrosión y Antiespumante, no es una emulsión de ningún tipo. 4.- CN101979457A Seawater-based solid phase-free environment-friendly drilling and completion fluid. Document that emphasizes a solid-free Seawater base fluid composed of: Seawater, Salt as a bridging agent, Shale Inhibitor, Lubricant, Corrosion Inhibitor and Antifoam, it is not an emulsion of any kind.
5.- CN101979457B Seawater-based solid phase-free environment-friendly drilling and completion fluid. Documento que hace énfasis en un fluido base Agua de Mar libre de solidos compuesto por: Agua de Mar, Sal como agente de puenteo, Inhibidor de Lutitas, Lubricante, Inhibidor de Corrosión, Antiespumante y anti-sloughing el cual es un Inhibidor a base de formiato soluble en agua, poliacrilato de potasio o polietanol. 5.- CN101979457B Seawater-based solid phase-free environment-friendly drilling and completion fluid. Document that emphasizes a solid-free Seawater base fluid composed of: Seawater, Salt as a bridging agent, Shale Inhibitor, Lubricant, Corrosion Inhibitor, Antifoam and anti-sloughing which is an Inhibitor based on water-soluble formate, potassium polyacrylate or polyethanol.
6.- CA2908773A1 / US9803127B2 DRILLING FLUID AND PROCESS OF MAKING THE SAME. Documento que hace énfasis en la elaboración de fluidos de perforación y los procesos para uso en áreas ambientalmente sensibles utilizando d efinas Lineales con diferentes valores de Carbonos. 6.- CA2908773A1 / US9803127B2 DRILLING FLUID AND PROCESS OF MAKING THE SAME. Document that emphasizes the elaboration of drilling fluids and the processes for use in environmentally sensitive areas using Linear definitions with different Carbon values.
7.- CN102504773A Saturated salt water drilling fluid for deep wells and extra-deep wells. Es un documento que hace énfasis en un sistema de fluidos de base Agua de Mar saturada con Sales con una serie de componentes diseñados para pozos de Aguas Profundas, entre los componentes están: Bentonita, Celulosas Polianiónicas, Lignosulfonatos, Resinas Lignosulfonadas, Asfaltos y Parafinas Emulsionadas.
8.- CN101148579A High temperature resistant circulating micro-foam drilling fluid or completion fluid. Documento que enfatiza en un fluido salado, compuesto por Microburbujas a base de bentonita, agente espumante, estabilizador de espuma, reductor de filtrado, viscosificante entre otros. 7.- CN102504773A Saturated salt water drilling fluid for deep wells and extra-deep wells. It is a document that emphasizes a system of fluids based on Seawater saturated with Salts with a series of components designed for Deep Water wells, among the components are: Bentonite, Polyanionic Cellulose, Lignosulfonates, Lignosulfonated Resins, Asphalts and Emulsified Paraffins . 8.- CN101148579A High temperature resistant circulating micro-foam drilling fluid or completion fluid. Document that emphasizes a salty fluid, composed of Microbubbles based on bentonite, foaming agent, foam stabilizer, filter reducer, viscosifier, among others.
9.- EP3013875A1 A HIGH-TEMPERATURE HIGH-PRESSURE (HTHP) STABLE SYNTHETIC POLYMER9.- EP3013875A1 A HIGH-TEMPERATURE HIGH-PRESSURE (HTHP) STABLE SYNTHETIC POLYMER
FOR WATER BASED OIL-WELL SERVICING FLUIDS. Documento que hace énfasis en un fluido a base de salmueras las cuales pueden se der: Cloruro de Sodio, Cloruro de Potasio, Cloruro de Calcio, Cloruro de Magnesio, Cloruro de Amonio, Cloruro de Zinc, Bromuro de Calcio, Bromuro de Sodio, Bromuro de Zinc, Formiato de Cesio, Formiato de Sodio, estabilizado el sistema reológicamente con Polivinilo y Copolimero de Amida / Acido Carboxilico Polimerizado entre otros. FOR WATER BASED OIL-WELL SERVICING FLUIDS. Document that emphasizes a brine-based fluid which can be: Sodium Chloride, Potassium Chloride, Calcium Chloride, Magnesium Chloride, Ammonium Chloride, Zinc Chloride, Calcium Bromide, Sodium Bromide, Bromide of Zinc, Cesium Formate, Sodium Formate, stabilized the system rheologically with Polyvinyl and Polymerized Amide / Carboxylic Acid Copolymer among others.
10.- RU2655035C1 WEIGHTED INVERT-EMULSION DRILLING MUD. Documento que hace énfasis en una Emulsión Inversa utilizando Aceite Mineral y Polímeros Sintéticos. 10.- RU2655035C1 WEIGHTED INVERT-EMULSION DRILLING MUD. Document that emphasizes an Inverse Emulsion using Mineral Oil and Synthetic Polymers.
11.- CA2614272A1 / EP1902115B1 WATER SWELLABLE POLYMERS AS LOST CIRCULATION CONTROL AGENTS11.- CA2614272A1 / EP1902115B1 WATER SWELLABLE POLYMERS AS LOST CIRCULATION CONTROL AGENTS
MATERIAL. Documento que enfatiza en una composición de Polímeros Sellante para una Emulsión Inversa. MATERIAL. Document that emphasizes a composition of Sealant Polymers for an Inverse Emulsion.
12.- US20070012447A1 Inverse emulsión polymers as lost circulation material. Documento que trata acerca de polímeros para ser utilizados como materiales de perdida de circulación. 12.- US20070012447A1 Inverse emulsion polymers as lost circulation material. Document dealing with polymers to be used as lost circulation materials.
13.- CN102140334B Oil-in-water drilling fluid suitable for different kinds of furnish preparation water and oils. Documento que hace énfasis en una Emulsión Directa que puede ser base Agua de Mar o base Agua Dulce la cual está compuesta por: Emulsificante Principal, Emulsificante Auxiliar, Reductor de Filtrado, Viscosificante y Densificante. 13.- CN102140334B Oil-in-water drilling fluid suitable for different kinds of furnish preparation water and oils. Document that emphasizes a Direct Emulsion that can be based on Sea Water or based on Fresh Water, which is composed of: Main Emulsifier, Auxiliary Emulsifier, Filtration Reducer, Viscosifier and Densifier.
14.- CN104073226A Solid-free seawater microfoam drilling fluid or completion fluid. Documento que hace énfasis en un
fluido base agua de mar microespumado, no es una emulsión directa. 14.- CN104073226A Solid-free seawater microfoam drilling fluid or completion fluid. Document that emphasizes a microfoamed seawater-based fluid, it is not a direct emulsion.
15.- MX2011010227A FLUIDOS DE PERFORACION Y TERMINACION AMIGABLES CON EL MEDIO AMBIENTE LIBRES DE SOLIDOS A BASE DE AGUA DE MAR. Documento que hace énfasis en fluidos de perforación y terminación amigables con el medio ambiente libres de sólidos a base de agua de mar, no es una emulsión directa. 15.- MX2011010227A ENVIRONMENTALLY FRIENDLY SOLID-FREE DRILLING AND COMPLETION FLUIDS BASED ON SEAWATER. Document that emphasizes environmentally friendly drilling and completion fluids free of solids based on seawater, it is not a direct emulsion.
16.- PA/a/2005/002845 SISTEMA AGUA DE MAR POLIMERICO INHIBIDO ESPUMADO PARA LA PERFORACION DE POZOS MARINOS. Documento que hace énfasis en un fluido base agua de mar polimérico espumado inhibidor de arcillas. 16.- PA/a/2005/002845 FOAMING INHIBITED POLYMERIC SEAWATER SYSTEM FOR DRILLING MARINE WELLS. Document that emphasizes a clay-inhibiting foamed polymeric seawater-based fluid.
17.- PA/a/2005/002843 SISTEMA BASE AGUA DULCE INHIBIDO ESPUMADO PARA LA PERFORACION DE POZOS BAJO BALANCE. Documento que hace énfasis en un fluido inhibido espumado base agua dulce. 17.- PA/a/2005/002843 FOAMING INHIBITED FRESHWATER BASED SYSTEM FOR UNDERBALANCED WELL DRILLING. Document that emphasizes a freshwater-based foamed inhibited fluid.
18.- MX/a/2015/013634 FLUIDO ESPUMADO PARA POZOS PETROLEROS DE BAJA PRESIÓN O FRACTURADOS. Documento que hace énfasis en un fluido espumado para ser utilizado en pozos con baja presión o fracturados. 18.- MX/a/2015/013634 FOAMING FLUID FOR LOW PRESSURE OR FRACTURED OIL WELLS. Document that emphasizes a foamed fluid to be used in low pressure or fractured wells.
19.- MX/a/2010/009639 SISTEMA DE EMULSIÓN SALINA DE BAJA DENSIDAD. Documento que enfatiza en un Sistema de Emulsión Salina Inhibida de Baja Densidad, esta emulsión está constituida por la dispersión de aire/gas, con esto se realiza la formación de microburbujas 19.- MX/a/2010/009639 LOW DENSITY SALINE EMULSION SYSTEM. Document that emphasizes a Low Density Inhibited Saline Emulsion System, this emulsion is constituted by the dispersion of air/gas, with this the formation of microbubbles is carried out
20.- 9810529 FLUIDO DE BAJA DENSIDAD Y ALTA VISCOSIDAD DE EMULSION DIRECTA PARA LA REPARACION Y PERFORACION DE POZOS PETROLEROS. Documento que hace énfasis en un fluido de baja densidad para la reparación y perforación de pozos petroleros caracterizados por que el fluido es una emulsión directa concentrada aireada formada por el 30-10% de agua dulce que es la fase continua de la emulsión, 1-2% de emulsificante nonil fenol polietoxilado no iónico que es el que da el carácter de emulsión directa y 70-90 % de diesel.
21.- 190581 PROCEDIMIENTO MEJORADO PARA LA OBTENCION DE UN FLUIDO DE BAJA DENSIDAD PARA LA PERFORACION, REPARACION Y TERMINACION DE POZOS PETROLEROS. Documento que trata de la preparación de un fluido de emulsión directa base agua dulce. 20.- 9810529 LOW DENSITY AND HIGH VISCOSITY FLUID OF DIRECT EMULSION FOR THE REPAIR AND DRILLING OF OIL WELLS. Document that emphasizes a low-density fluid for the repair and drilling of oil wells characterized in that the fluid is an aerated concentrated direct emulsion formed by 30-10% of fresh water, which is the continuous phase of the emulsion, 1- 2% non-ionic polyethoxylated nonyl phenol emulsifier, which is what gives the direct emulsion character, and 70-90% diesel. 21.- 190581 IMPROVED PROCEDURE FOR OBTAINING A LOW DENSITY FLUID FOR THE DRILLING, REPAIR AND COMPLETION OF OIL WELLS. Document dealing with the preparation of a direct emulsion fluid based on fresh water.
22.- MX/a/2017/005378 SISTEMA DE FLUIDO DE PERFORACION ECOLOGICO, INHIBIDO, LIGERO Y PUENTEANTE. Documento que trata acerca de un fluido polimérico inhibido base agua de mar, no es emulsión directa. 22.- MX/a/2017/005378 ECOLOGICAL, INHIBITED, LIGHT AND BRIDGING DRILLING FLUID SYSTEM. Document that deals with an inhibited polymeric fluid based on sea water, it is not a direct emulsion .
23.- MX/a/2014/000724 FLUIDO DE EMULSIÓN INVERSA QUE CONTIENE UN LÍQUIDO HIGROSCÓPICO, UN AGENTE DISPERSANTE POLIMERICO Y SÓLIDOS DE BAJA DENSIDAD. Documento que trata acerca de un fluido tipo emulsión inversa. 23.- MX/a/2014/000724 INVERSE EMULSION FLUID CONTAINING A HYGROSCOPIC LIQUID, A POLYMERIC DISPERSING AGENT AND LOW DENSITY SOLIDS. Document dealing with an inverse emulsion type fluid.
DESCRIPCION DETALLADA DE LA INVENCION: DETAILED DESCRIPTION OF THE INVENTION:
Para la intervención de pozos petroleros, en especial en zonas complejas de bajo gradiente de presión y fracturas naturales donde existe un gran reto desde el punto de vista de Fluidos de Perforación, Reparación y Terminación de Pozos; desarrollamos un Sistema de Fluidos de Baja Densidad de Emulsión Directa Base Agua de Mar, consiguiendo densidades desde 0.87 g/cc hasta 0.99 g/cc con ajuste en la relación Aceite/Agua, ofreciendo una excelente estabilidad del pozo a un bajo costo. For the intervention of oil wells, especially in complex areas of low pressure gradient and natural fractures where there is a great challenge from the point of view of Drilling Fluids, Repair and Completion of Wells; We developed a Seawater-Based Direct Emulsion Low Density Fluid System, achieving densities from 0.87 g/cc to 0.99 g/cc with adjustment in the Oil/Water ratio, offering excellent well stability at a low cost.
Para los fluidos de perforación, reparación y terminación de pozos se utilizan dos tipos de emulsiones; Emulsiones Inversa y Emulsiones Directas, nuestro diseño es una emulsión directa donde el agua constituye la fase continua y el aceite forma la fase discontinua. Con esta formulación se obtienen fluidos con las siguientes caracteristicas:Two types of emulsions are used for drilling, workover and completion fluids; Inverse Emulsions and Direct Emulsions, our design is a direct emulsion where water is the continuous phase and oil is the discontinuous phase. With this formulation, fluids with the following characteristics are obtained:
• Rápida y fácil preparación. • Quick and easy preparation.
• Estabilidad térmica hasta 150 °C • Thermal stability up to 150 °C
• Buena capacidad de acarreo. • Good carrying capacity.
• Flexibilidad en el manejo de su reologia. • Flexibility in managing your rheology.
• Fácilmente lavables con agua. • Easily washable with water.
• Altas viscosidades con baja velocidad de corte.
• Densidades de 0.88 - 1.00 gr/cc de acuerdo con la relación aceite-agua. • High viscosities with low shear rate. • Densities of 0.88 - 1.00 gr/cc according to the oil-water ratio.
Sin embargo, estos fluidos tienen las siguientes desventajas: However, these fluids have the following disadvantages:
• Baja estabilidad a la temperatura. • Low temperature stability.
• Sensibles a la sosa cáustica. • Sensitive to caustic soda.
• No tienen poder de inhibición de arcillas hidratables • They do not have the power to inhibit hydratable clays.
• Muy sensibles a cualquier contacto con fluidos de emulsión inversa. • Very sensitive to any contact with inverted emulsion fluids.
Nuestra invención es una Emulsión Directa cuya fase continua es AGUA DE MAR y la fase dispersa es ACEITE DIESEL en una proporción de 70% a 50% Agua de Mar y 30 % a 50% AceiteOur invention is a Direct Emulsion whose continuous phase is SEAWATER and the dispersed phase is DIESEL OIL in a proportion of 70% to 50% Seawater and 30% to 50% Oil.
Diesel, efectuada la estabilidad de la emulsión por un Agente Emulgente; donde el Agente Emulgente esta internamente modificado; dicha modificación se realizó tanto por afinidad como en su estructura quimica, dando como resultado una emulsión capaz de soportar ambientes de extrema dureza y temperaturas de fondo hasta de 170 °C. Nuestro formulación es de última generación y está enfocada a eliminar las desventajas que presentan las emulsiones directas convencionales, reducir costos y tiempos operativos en los diversos trabajos a que sea sometida, capaz de competir técnicamente contra las emulsiones inversas de baja densidad, asi como los fluidos poliméricos inhibidos. Emulsión: Diesel, effected the stability of the emulsion by an Emulsifying Agent; where the Emulsifying Agent is internally modified; Said modification was carried out both by affinity and in its chemical structure, resulting in an emulsion capable of withstanding extremely harsh environments and background temperatures of up to 170 °C. Our formulation is state-of-the-art and is focused on eliminating the disadvantages of conventional direct emulsions, reducing costs and operating times in the various jobs to which it is subjected, capable of technically competing against low-density inverse emulsions, as well as fluids. inhibited polymers. Emulsion:
Una emulsión es un liquido compuesto por dos sustancias que no están mezcladas. Una de ellas es siempre hidrofilica (miscible con agua) y la otra es lipofilica (miscible con aceite o grasa). Una emulsión siempre estará compuesta por: Fase Acuosa, Fase Oleosa y Emulgente.
Emulgentes Clasificación: An emulsion is a liquid made up of two substances that are not mixed. One of them is always hydrophilic (miscible with water) and the other is lipophilic (miscible with oil or fat). An emulsion will always be composed of: Aqueous Phase, Oily Phase and Emulsifier. Emulsifiers Classification:
Por Afinidad: Lipofilicos o Hidrofilicos. By Affinity: Lipophilic or Hydrophilic.
Por Estructura Quimica: Aniónicos, Catiónicos, No Iónicos o Anfóteros By Chemical Structure: Anionic, Cationic, Nonionic or Amphoteric
La Estabilidad de la Emulsión depende de: Emulsion Stability depends on:
• Tamaño de las gotas de la fase dispersa. • Size of the disperse phase droplets.
• Diferencia de densidad de ambas fases. • Density difference of both phases.
• Viscosidad de la fase continua y de la emulsión. • Viscosity of the continuous phase and of the emulsion.
• Fuerzas de interfase que actúan en la superficie de las gotas. • Interface forces acting on the surface of the drops.
• Naturaleza y cantidad del emulsificante. • Nature and quantity of the emulsifier.
Tomando en cuenta las restricciones de espacio que existen actualmente en las plataformas que operan en la zona marina y viendo una área de oportunidad a mejorar desarrollamos nuestro sistema con materiales líquidos y sólidos con lo cual obtenemos una fácil y rápida generación de grandes cantidades de volumen de fluido en corto tiempo consiguiendo optimizar los tiempos operativos.Nuestra formulación cuenta con un alcalinizante de la fase acuosa y que a su vez propicia inhibición de las lutitas reactivas además de ser un secuestrante de H2S, también nuestra invención cuenta con un material Termopolimerizado que hace las funciones de reductor de filtrado, un biopolimero de alto peso molecular que funciona como viscosificante, un emulsificante anfótero e inhibidores de lutitas a base de mezclas de polietilenglicol y sales de potasio. Taking into account the space restrictions that currently exist in the platforms that operate in the marine zone and seeing an area of opportunity to improve, we developed our system with liquid and solid materials with which we obtain an easy and rapid generation of large amounts of volume of fluid in a short time, optimizing operating times. Our formulation has an alkalizing agent for the aqueous phase and which, in turn, favors the inhibition of reactive shale, in addition to being an H2S sequestrant. Our invention also has a thermopolymerized material that makes the functions as a filtrate reducer, a high molecular weight biopolymer that functions as a viscosifier, an amphoteric emulsifier and shale inhibitors based on mixtures of polyethylene glycol and potassium salts.
Cada metro cubico esta formulado por: 425 litros de agua de mar, ajustando el pH con 6-10 litros de CHS-BUFFER, Alcalinizante/Secuestrante de Sulfhidrico/Inhibidor de lutitas (Monoetanolamina C2H7NO), 15-20 kilogramos de CHS-Each cubic meter is formulated by: 425 liters of seawater, adjusting the pH with 6-10 liters of CHS-BUFFER, Alkalinizer/Sequestrant of Hydrogen Sulfide/Shale Inhibitor (Monoethanolamine C 2 H 7 NO), 15-20 kilograms of CHS-
Inhibitor 1 (Inhibidor de lutitas KC1), 8-15 kilogramos deInhibitor 1 (KC1 Shale Inhibitor), 8-15 kilograms of
CHS-SD como reductor de filtrado (Celulosa polianiónica carboximetil celulosa de sodio (C6H7O2(OH)2CH2COONa) + Almidón (C6HI0O5) + Carbonato de Calcio (Ca C03) , 4-8
kilogramos de CHS-PRF como agente viscosificante y estabilizador térmico (Hidroxietil Celulosa [(C6Hg05)(C2H0)xH]n + Oleorresina C6HI0OS2), 10-20 litros de CHS-Emul LD como agente emulsificante (Oleato de Sodio Ci8H3402 .Na + Ácido graso R-COOH) y 425 litros de aceite diesel, dicha invención proporciona propiedades fisicoquímicas dentro de los rangos que marca la Norma: NRF- 301-PEMEX-2012 "Sistemas de fluidos de Baja Densidad empleados en Perforación, Terminación y Mantenimiento de Pozos. CHS-SD as filtrate reducer (Sodium carboxymethyl cellulose polyanionic cellulose (C6H7O2(OH)2CH2COONa) + Starch (C 6 H I0O5) + Calcium Carbonate (Ca C0 3) , 4-8 kilograms of CHS-PRF as viscosifying agent and thermal stabilizer (Hydroxyethyl Cellulose [(C 6 Hg05)(C 2 H0)xH]n + Oleoresin C 6 H I0 OS 2 ), 10-20 liters of CHS-Emul LD as emulsifying agent (Sodium Oleate Ci 8 H 34 0 2 .Na + Fatty Acid R-COOH) and 425 liters of diesel oil, this invention provides physicochemical properties within the ranges established by the Standard: NRF-301-PEMEX-2012 "Systems of Low Density fluids used in Drilling, Completion and Maintenance of Wells.
Una de las problemáticas criticas que se presentan al intervenir pozos en zonas depresionadas o fracturadas es la perdida severa o total de fluido a formación, las condicionantes de algunos equipos de perforación sobre la preparación de fluido en sitio requieren de respuestas rápidas y eficaces, eficaces en cuanto a la generación de un fluido con las propiedades fisicoquímicas requeridas donde esta situación no la cumplen los fluidos actuales y esto conlleva tiempos prolongados. Esta área de oportunidad nos llevó a estudiar y razonar sobre un diseño de fluido que cumpliera con lo antes expuesto y nos diera las bondades para intervenir formaciones: rocas carbonatadas depresionadas, rocas carbonatadas fracturadas, arenas arcillosas de alta permeabilidad sin exponer el pozo consiguiendo la fabricación del fluido en tiempos cortos coadyuvando asi a mejorar los tiempos productivos. One of the critical problems that arise when intervening wells in depressed or fractured areas is the severe or total loss of fluid to the formation, the constraints of some drilling equipment on the preparation of fluid on site require rapid and effective responses, effective in Regarding the generation of a fluid with the required physicochemical properties where this situation is not met by current fluids and this entails long times. This area of opportunity led us to study and reason about a fluid design that complies with the above and would give us the benefits to intervene formations: depressed carbonate rocks, fractured carbonate rocks, clayey sands of high permeability without exposing the well, achieving the fabrication of the fluid in short times, thus helping to improve production times.
PROCESO BASICO PARA LA FABRICACION DEL FLUIDO: a.Adicionar en presas o tanques la cantidad calculada de agua de mar. b.Mientras adiciona el agua de mar, agregar CHS-BUFFER (6-10) lts/M3 (Alcalinizante/Secuestrante de Sulfhidrico/Inhibidor de lutitas), simultáneamente adicionar el CHS-Inhibitor (15- 20) kg/M3 (Inhibidor de arcillas) en la concentración
calculada en función a las condiciones del intervalo a intervenir. c.Adicionar el componente CHS-SD (8-15) kg/M3 (Reductor de filtrado) de acuerdo con lo calculado. d.Adicionar el material CHS-PRF (4-8) kg/M3 (Viscosificante y estabilizador térmico) de acuerdo con lo calculado. e.Agregar CHS-EMUL LD (10-20) lts/M3 (Emulgente) de acuerdo con lo calculado. f.Finalmente adicionar el aceite Diesel calculado. g.Recircular en presas o tanques por 30 minutos. h.Una vez analizado y habiendo acreditado las propiedades fisicoquímicas, puede ser bombeado hacia el pozo como fluido de control. BASIC PROCESS FOR THE MANUFACTURING OF THE FLUID: a.Add the calculated amount of seawater in dams or tanks. b.While adding the seawater, add CHS-BUFFER (6-10) lts/M 3 (Alkalizing/Hydric Sulfide Sequestrant/Shale Inhibitor), simultaneously add the CHS-Inhibitor (15-20) kg/M 3 ( Clay inhibitor) in the concentration calculated according to the conditions of the interval to intervene. c.Add the component CHS-SD (8-15) kg/M 3 (Filtration reducer) according to the calculation. d.Add the material CHS-PRF (4-8) kg/M 3 (Viscosifier and thermal stabilizer) according to the calculation. e.Add CHS-EMUL LD (10-20) lts/M 3 (Emulsifier) according to the calculation. f.Finally add the calculated Diesel oil. g. Recirculate in dams or tanks for 30 minutes. h.Once analyzed and having proven the physicochemical properties, it can be pumped into the well as a control fluid.
Esta formulación es capaz de soportar contaminantes tales como: Emulsión inversa, Gases C02 y H2S, aceite crudo de formación, aguas oleosas, fluidos de empaque, salmueras cálcicas, salmueras sódicas, salmueras potásicas, residuos de baches despegadores de tubería, residuos de baches desimantadores y agua de lluvia. This formulation is capable of withstanding contaminants such as: Inverse emulsion, C0 2 and H 2 S gases, crude oil from formation, oily waters, packing fluids, calcium brines, sodium brines, potassium brines, pothole residues, pipe detachers, residues demagnetizing potholes and rainwater.
Análisis Fisicoquímico VS Parámetros de la Norma.
Tabla 2: Resultados VS valores de la norma. Physicochemical Analysis VS Standard Parameters. Table 2: Results VS values of the norm.
Ficha técnica del sistema:
System data sheet:
Tabla 3 ficha técnica Table 3 technical sheet
Formulación para un metro cubico:
Formulation for a cubic meter:
Tabla 5 formulación Table 5 formulation
Producto 1: Agua de Mar. Utilizamos sus minerales (cloruro de sodio, magnesio, calcio y potasio) asi como sus características naturales, para que en conjunto interactúen a favor del sistema de fluidos, la cantidad efectiva del producto 1 esta entre 80% y 20% en volumen. Product 1: Seawater. We use its minerals (sodium, magnesium, calcium and potassium chloride) as well as its natural characteristics, so that together they interact in favor of the fluid system, the effective amount of product 1 is between 80% and 20% by volume.
Producto 2: CHS-Inhibitor, Inhibidor de arcillas, Cloruro de potasio, material que realiza la inhibición quimica de las arcillas mediante el intercambio catiónico, desplazando
al ion sodio de las lutitas por el ion potasio, Los iones K+ se adhieren a las superficies de la arcilla y dan estabilidad a la lutita expuesta a los fluidos de perforación por la barrena. Los iones también ayudan a mantener juntos los recortes de perforación, minimizando la dispersión en partículas más finas. Product 2: CHS-Inhibitor, Inhibitor of clays, Potassium Chloride, material that performs the chemical inhibition of clays through cation exchange, displacing to the sodium ion of the shales by the potassium ion, K + ions adhere to the clay surfaces and give stability to the shale exposed to the drilling fluids by the bit. The ions also help hold the drill cuttings together, minimizing dispersion into finer particles.
Producto 3: CHS-Buffer, Alcalinizante/Secuestrante de Sulfhidrico/Inhibidor de lutitas, Monoetanolamina, proporciona el ajuste al pH del agua de mar y cuando hay presencia de gases tales como C02 y H2S actúa como secuestrante; de igual forma proporciona sales de amonio las cuales coadyuban para el reemplazo catiónico del sodio de las arcillas estabilizando las paredes del pozo. Product 3: CHS-Buffer, Alkalinizer/Sulfuric Sequestrant/Shale Inhibitor, Monoethanolamine, adjusts the pH of seawater and acts as a sequestrant when gases such as C0 2 and H 2 S are present; Likewise, it provides ammonium salts which contribute to the cationic replacement of sodium in clays, stabilizing the walls of the well.
Producto 4: CHS-SD, Reductor de filtrado, mezcla de celulosa polianiónica carboximetil celulosa de sodio más almidones y carbonato de calcio, estabilizados térmicamente con un poliglicol, teniendo como función secundaria generar estabilidad térmica al sistema. Product 4: CHS-SD, Filtration Reducer, mixture of sodium carboxymethyl cellulose polyanionic cellulose plus starches and calcium carbonate, thermally stabilized with a polyglycol, with the secondary function of generating thermal stability to the system.
Producto 5: CHS-PRF, Viscosificante, es una mezcla de hidroxietil celulosa con resinas oleosolubles, diseñadas para compartir afinidad tanto a la fase acuosa como la fase lipofilica, se entrelazan con el producto No 4 para formar una red y realizar le generación de viscosidad en ambientes de extrema dureza, este componente es quien forma una película alrededor de las burbujas de aire haciendo rígida la burbuja evitando que esta se degrade mediante la presión hidrostática, entrampando aire y de esa manera conseguir las densidades menores a 1.00 g/cc, el amplio espectro donde realiza su función es en la interfase aceite / agua formando una barrera protectora alrededor de las gotas de la fase dispersa. Product 5: CHS-PRF, Viscosifier, is a mixture of hydroxyethyl cellulose with oil-soluble resins, designed to share affinity to both the aqueous phase and the lipophilic phase, they intertwine with product No 4 to form a network and generate viscosity In extremely harsh environments, this component forms a film around the air bubbles, making the bubble rigid, preventing it from degrading through hydrostatic pressure, trapping air and thus achieving densities of less than 1.00 g/cc. broad spectrum where it performs its function is at the oil/water interface, forming a protective barrier around the droplets of the dispersed phase.
Producto 6: CHS-Emul LD, Emulsificante anfotero de doble afinidad, es una mezcla homogénea de emulsificantes hidrófilos y lipofilicos en porcentajes de 80 % Hidrófilo y 20 % Lipofilico, Factor importante para la estabilización
del sistema, ajustamos al emulsificante en valores de 10 hasta 16 HLB (Hidrofilic Lipofilic Balance) y mezclamos materiales Anfóteros con No Iónicos, incrementando el poder en la formación de capas multimoleculares alrededor de las gotas del agua de mar, de igual forma aporta cargas eléctricas que promueven la repulsión aumentando el rendimiento del producto 5 Product 6: CHS-Emul LD, double affinity amphoteric emulsifier, is a homogeneous mixture of hydrophilic and lipophilic emulsifiers in percentages of 80% hydrophilic and 20% lipophilic, important factor for stabilization of the system, we adjust the emulsifier in values from 10 to 16 HLB (Hydrophilic Lipophilic Balance) and mix Amphoteric materials with Non-Ionic, increasing the power in the formation of multimolecular layers around the drops of sea water, in the same way it provides electrical charges that promote repulsion increasing product yield 5
Producto 7: Diesel, es la fase dispersa, proporciona al sistema la lubricidad necesaria y la baja densidad para poder intervenir zonas depresionadas, consta de 20% a un 30% en volumen, Al reducir el volumen de utilización del producto 7, reduce el precio final del sistema de fluidos comparándolo contra el sistema convencional que se ha venido utilizando. Product 7: Diesel, is the dispersed phase, provides the system with the necessary lubricity and low density to be able to intervene in depressed areas, it consists of 20% to 30% by volume. By reducing the volume of use of product 7, it reduces the price end of the fluid system comparing it against the conventional system that has been used.
RESULTADOS (Técnicos / Económicos) RESULTS (Technical / Economic)
• Fluido para ser utilizado en trabajos de Perforación, Reparación y Terminación de pozos. • Fluid to be used in drilling, repair and completion of wells.
• Reologias modificables para transportar los recortes de perforación y rebabas a la superficie. • Modifiable rheologies to transport drill cuttings and burrs to the surface.
• Mantiene en suspensión a los recortes en el espacio anular, cuando se detiene la circulación. • Holds cuttings in the annular space in suspension when circulation stops.
• Genera una estructura de Gel y Viscosidad suficiente para evitar la migración del gas. • Generates a Gel structure and sufficient Viscosity to prevent gas migration.
• Controla la presión de formación. • Controls formation pressure.
• Enfria y lubrica la barrena y la sarta. • Cools and lubricates the bit and string.
• Da sostén a las paredes del pozo. • Gives support to the walls of the well.
• Ayuda a suspender el peso de la sarta y Aparejo de Producción. • Helps to suspend the weight of the string and Production Rig.
• Provee un medio adecuado para llevar a cabo los Registros Eléctricos. • Provides an adequate means to carry out the Electrical Records.
• Resiste la contaminación derivada de fuentes externas.
• Se mantiene estable a temperaturas y presiones elevadas. • Resists contamination from external sources. • Remains stable at elevated temperatures and pressures.
• Altamente compatible con bactericidas e inhibidores de corrosión para conversión a Fluido de Empaque.
• Highly compatible with bactericides and corrosion inhibitors for conversion to Packing Fluid.
Tabla 6 resultado económico Table 6 economic result
BIBLIOGRAFIA
BIBLIOGRAPHY
Claims
1.Sistema de Fluidos de Emulsión Directa de Baja Densidad con relación Ac/Ag modificada base de agua de mar para zonas depresionadas de alta temperatura para ser utilizado en los procesos de perforación, reparación y terminación de pozos, su base es una Emulsión Directa modificada internamente para resistir ambientes ácidos, alcalinos y altas temperaturas y consta de: 1. Low Density Direct Emulsion Fluid System with modified Ac/Ag ratio based on seawater for high temperature depressed areas to be used in the processes of drilling, repair and completion of wells, its base is a modified Direct Emulsion internally to resist acidic, alkaline and high temperature environments and consists of:
COMPONENTE 1, COMPONENT 1,
COMPONENTE 2, COMPONENT 2,
COMPONENTE 3, COMPONENT 3,
COMPONENTE 4, y COMPONENTE 5. COMPONENT 4, and COMPONENT 5.
2.COMPONENTE 1: Utilizamos sus minerales (cloruro de sodio, magnesio, calcio y potasio) asi como sus características naturales (Reivindicación 1), para que en conjunto interactúen a favor del sistema de fluidos, la cantidad efectiva del COMPONENTE 1 esta entre 80% y 20% en volumen. 2.COMPONENT 1: We use its minerals (sodium, magnesium, calcium and potassium chloride) as well as its natural characteristics (Claim 1), so that together they interact in favor of the fluid system, the effective amount of COMPONENT 1 is between 80 % and 20% by volume.
3.COMPONENTE 2: Cuando aparecieron estos sistemas en el año de 1982, la utilización del COMPONENTE 2 se ha manejado en valores del 70% al 80% en volumen, nuestra Reivindicación 2 consta de 20% a un 30% en volumen, manteniendo las propiedades fisicoquímicas del sistema "CHS-LDSW" en valores superiores inclusive de lo que establece la Norma NRF-301- PEMEX-2012 "Sistemas de Baja Densidad empleados en Perforación, Terminación y Mantenimiento de Pozos". Al reducir el volumen de utilización del COMPONENTE 2, reduce de un 40 a 60 % el precio final del sistema de fluidos comparándolo contra el sistema convencional que se ha venido utilizando.
3.COMPONENT 2: When these systems appeared in 1982, the use of COMPONENT 2 has been managed in values of 70% to 80% in volume, our Claim 2 consists of 20% to 30% in volume, maintaining the physicochemical properties of the "CHS-LDSW" system in values even higher than what is established by the NRF-301-PEMEX-2012 Standard "Low Density Systems used in Drilling, Completion and Maintenance of Wells". By reducing the volume of use of COMPONENT 2, it reduces the final price of the fluid system by 40 to 60% compared to the conventional system that has been used.
4.COMPONENTE 3: Factor importante para la estabilización del sistema, ajustamos al COMPONENTE 3 en valores de 10 hasta 16 HLB y mezclamos COMPONENTES Anfóteros con No Iónicos en porcentajes de 40/60 % en peso, incrementando el poder en la formación de capas multimoleculares alrededor de las gotas del COMPONENTE 2, de igual forma aporta cargas eléctricas que promueven la repulsión aumentando la viscosidad del COMPONENTE 1. 4.COMPONENT 3: Important factor for the stabilization of the system, we adjust COMPONENT 3 in values from 10 to 16 HLB and mix Amphoteric with Non-Ionic COMPONENTS in percentages of 40/60% by weight, increasing the power in the formation of multimolecular layers around the drops of COMPONENT 2, in the same way it provides electrical charges that promote repulsion, increasing the viscosity of COMPONENT 1.
5.COMPONENTE 4: mezcla de dos productos termopolimerizados (Polihidroxietil almidón y carbonato de calcio) la cantidad efectiva para desempeñar su función es de 4 a 8 gr/lto. 5.COMPONENT 4: mixture of two thermopolymerized products (Polyhydroxyethyl starch and calcium carbonate) the effective amount to perform its function is 4 to 8 gr/lto.
6.COMPONENTE 5: Material de cadena larga policondensado, deshidratado, molido y tamizado, la cantidad efectiva para desempeñar su función es de 6 a 12 gr/lto.
6.COMPONENT 5: Long-chain polycondensed material, dehydrated, ground and sieved, the effective amount to perform its function is from 6 to 12 gr/lto.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MX2021003521A MX2021003521A (en) | 2021-03-25 | 2021-03-25 | Direct emulsion fluid based on seawater with inverted oil/water ratio for zones with low-pressure gradient and high temperature. |
| MXMX/A/2021/003521 | 2021-03-25 |
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| WO2022203496A1 true WO2022203496A1 (en) | 2022-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/MX2022/050029 WO2022203496A1 (en) | 2021-03-25 | 2022-03-24 | Seawater-based direct emulsion fluid with an inverse oil/water ratio for areas with a low pressure gradient and high temperature |
Country Status (2)
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| MX (1) | MX2021003521A (en) |
| WO (1) | WO2022203496A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2032491A (en) * | 1978-08-09 | 1980-05-08 | Elf Aquitaine | Well spacer fluids |
| US20040116304A1 (en) * | 2002-12-02 | 2004-06-17 | An-Ming Wu | Emulsified polymer drilling fluid and methods of preparation and use thereof |
| WO2020023398A1 (en) * | 2018-07-26 | 2020-01-30 | Halliburton Energy Services, Inc. | Emulsifiers for direct emulsion drilling fluids |
-
2021
- 2021-03-25 MX MX2021003521A patent/MX2021003521A/en unknown
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2022
- 2022-03-24 WO PCT/MX2022/050029 patent/WO2022203496A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2032491A (en) * | 1978-08-09 | 1980-05-08 | Elf Aquitaine | Well spacer fluids |
| US20040116304A1 (en) * | 2002-12-02 | 2004-06-17 | An-Ming Wu | Emulsified polymer drilling fluid and methods of preparation and use thereof |
| WO2020023398A1 (en) * | 2018-07-26 | 2020-01-30 | Halliburton Energy Services, Inc. | Emulsifiers for direct emulsion drilling fluids |
Non-Patent Citations (1)
| Title |
|---|
| QUINTERO L. ET AL.: "An Overview of Surfactant Applications in Drilling Fluids for the Petroleum Industry", JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, vol. 23, no. 1-3, 2002, pages 393 - 404, XP008099397, [retrieved on 20220617] * |
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