WO2002036709A1 - Pressure control fluid for high pressure oil and gas well applications - Google Patents
Pressure control fluid for high pressure oil and gas well applications Download PDFInfo
- Publication number
- WO2002036709A1 WO2002036709A1 PCT/ID2001/000004 ID0100004W WO0236709A1 WO 2002036709 A1 WO2002036709 A1 WO 2002036709A1 ID 0100004 W ID0100004 W ID 0100004W WO 0236709 A1 WO0236709 A1 WO 0236709A1
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- WO
- WIPO (PCT)
- Prior art keywords
- water
- natrium
- solution
- bromide
- based solvents
- Prior art date
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- 239000012530 fluid Substances 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
- VNDYJBBGRKZCSX-UHFFFAOYSA-L zinc bromide Chemical compound Br[Zn]Br VNDYJBBGRKZCSX-UHFFFAOYSA-L 0.000 claims abstract description 45
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims abstract description 42
- 150000003839 salts Chemical class 0.000 claims abstract description 32
- 239000002904 solvent Substances 0.000 claims abstract description 30
- 238000002156 mixing Methods 0.000 claims abstract description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims abstract description 15
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 claims abstract description 8
- 239000011592 zinc chloride Substances 0.000 claims abstract description 8
- 229940102001 zinc bromide Drugs 0.000 claims abstract description 7
- 239000003021 water soluble solvent Substances 0.000 claims abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 57
- 239000000126 substance Substances 0.000 claims description 32
- 238000004519 manufacturing process Methods 0.000 claims description 20
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 17
- 238000005553 drilling Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 10
- 239000006193 liquid solution Substances 0.000 claims description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 claims description 3
- 229940007718 zinc hydroxide Drugs 0.000 claims description 3
- 229910021511 zinc hydroxide Inorganic materials 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 2
- 235000011121 sodium hydroxide Nutrition 0.000 claims 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 7
- 229910000069 nitrogen hydride Inorganic materials 0.000 claims 6
- 238000003828 vacuum filtration Methods 0.000 claims 6
- 229910021529 ammonia Inorganic materials 0.000 claims 3
- 150000002500 ions Chemical class 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 235000005074 zinc chloride Nutrition 0.000 abstract description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 4
- 239000011780 sodium chloride Substances 0.000 abstract 2
- 239000000243 solution Substances 0.000 description 22
- 230000015572 biosynthetic process Effects 0.000 description 15
- 238000005755 formation reaction Methods 0.000 description 15
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 239000011148 porous material Substances 0.000 description 6
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000012267 brine Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000012266 salt solution Substances 0.000 description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- ATZQZZAXOPPAAQ-UHFFFAOYSA-M caesium formate Chemical compound [Cs+].[O-]C=O ATZQZZAXOPPAAQ-UHFFFAOYSA-M 0.000 description 1
- NCMHKCKGHRPLCM-UHFFFAOYSA-N caesium(1+) Chemical compound [Cs+] NCMHKCKGHRPLCM-UHFFFAOYSA-N 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 filter media Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002689 soil Substances 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
- C01D1/04—Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/04—Halides
-
- 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
- C09K8/05—Aqueous well-drilling compositions containing inorganic compounds only, e.g. mixtures of clay and salt
Definitions
- This invention is referring to one type of pressure suppressing fluid for application at high pressure oil and gas drilling/production wells.
- brine solution offer simplicity of usage, clean formation and the possibility of recycling, the liquid solution form is preferable compare to drilling mud.
- liquid form especially water
- Density here is defined as weight per volume unit.
- Other form of salts such as Natrium Chloride (NaCl) and Calcium Chloride (CaCl 2 ) as general salts in the solution form, carried also low density that are not high enough for high pressure well application. Furthermore since that brine solutions only have low density, those solutions could not be used as pressure suppressing fluid for oil and gas wells requiring high density.
- Calcium Chloride offers a higher density compare to water and Natrium Chloride (NaCl) solutions, on the other hand Calcium Chloride will create plugging at oil pores and the aquifer of formation due to chemical reactions between Calcium ions (Ca 2+ ) and Carbon dioxide (CO 2 ) in the well downhole.
- the objective of this invention is to provide a homogen liquid solution with high density in order to suppress the upcoming pressure of oil and gas in the production wells, that in its liquid form, it is possible to be pumped out from the treated well, ensuring no residual fluid. It is requested that the chemical and physical properties of this fluid should be compatible to conditions and environment of oil and gas well aquifer (formation).
- this fluid can be injected into the oil and gas wells in order to suppress oil or gas pressure temporarily before operation of new wells or production wells.
- the fluid must be able to suppress oil or gas pressure during maintenance temporarily or permanently.
- the density of fluid according to this inventions is high density for liquid or homogen liquid. It is preferable at 2.2 gr/cc and most preferable at 1.94 gr/cc.
- solution or liquid according to this invention does not contain any hardness so that does not risk of reaction with Carbon dioxide that furthermore will create plugging at oil or gas pores at the well aquifer and the well formation.
- the fluid according to this invention should be homogeneous without precipitation or suspension that would risk for plugging of oil & gas pores at the production well downhole. This fluid must be able to be pumped out from or to oil or gas production wells.
- the fluid according to this invention have an acidity level (pH) slightly below a normal pH level so that it would be easier to diluted precipitated materials of hardness salts.
- the preferable pH level is between 2-8 in the oil or gas production well formations.
- the fluid according to this invention could be used together with other chemicals such as viscosifier or bridging agent to prevent loss, filter media, dispersant, biocide and corrosion inhibitors. It is requested that the fluid according to this invention does not create deformation or damages of the whole formation of oil and gas wells during applications It is requested that the cost of producing the fluid is cheaper than producing other high density salts.
- Zinc Bromide (Zn Br ) salts and Natrium Chloride (NaCl) or mixing between Zinc Bromide (ZnBr ) and Sodium Bromide (NaBr) or mixing between Zinc Oxide / Zinc Hydroxide or all type of Zinc ions with Sodium Bromide in water or water based solvents.
- fluid or solution according to this invention is based on a mixture between Solution of Zinc Bromide (ZnBr ) and Natrium Chloride (NaCl) with molar ratio from 1 :2 to 2: 1 in water or other water based solvents.
- Molar ratio 1 : 2 to 2: 1 would be achieved with the following methods :
- Non suspended homogen solutions without any risks of plugging due to accumulated particles at the oil pores at the well formations.
- the product is designed to be easily pump out from the drilling or production wells.
- Other chemicals used at drilling/production of oil and gas such as : viscosifier, loss circulation materials, filter media, dispersant, anti bacteria/microorganism, and corrosion inhibitors
- Characteristics of fluid resulted from mixing between Zinc Bromide (ZnBr 2 ) with Natrium Chloride (NaCl), or resulted form mixing between Natrium Bromide (NaBr) with Zinc Chloride (ZnCl 2 ), that both of the mixing is performed with Molar ratio
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Lubricants (AREA)
Abstract
Regarding one type of solution between slats containing Zinc Bromide and Natrium Chloride in water or other water base solvents, that can be used as pressure suppressing fluid or high pressure oil and gas wells. The mixing process for those salts can be performed by direct mixing between ZnBr2 and NaCl in molar ratiofrom 1:2 to 2:1 in water or other water soluble solvents in atmospheric pressure, with or without heating, or indirect mixing between NaBr and ZnCl2 so that the final reaction of product will contain ZnBr2 and NaCl, with molar ration from 1:2 to 2:1, with water or other water based solvents, in the atmospheric pressure, with or without heating process where the final solid contain of solution can achieve maximum level of 92 % to weight, and have a density of up to 1.94-2.2 gr/cm3.
Description
Description
PRESSURE CONTROL FLUID FOR HIGH PRESSURE OIL AND GAS WELL APPLICATIONS
Technical Invention :
This invention is referring to one type of pressure suppressing fluid for application at high pressure oil and gas drilling/production wells.
Background of Invention :
In general, people use water or brine solutions or drilling mud to suppress upcoming pressure from drilling/production well. Since brine solution offer simplicity of usage, clean formation and the possibility of recycling, the liquid solution form is preferable compare to drilling mud.
Application of the above liquid form, especially water, experience a disadvantage for its low density. "Density" here is defined as weight per volume unit. Other form of salts such as Natrium Chloride (NaCl) and Calcium Chloride (CaCl2) as general salts in the solution form, carried also low density that are not high enough for high pressure well application. Furthermore since that brine solutions only have low density, those solutions could not be used as pressure suppressing fluid for oil and gas wells requiring high density.
Among those salt solutions, Calcium Chloride (CaCl2) offers a higher density compare to water and Natrium Chloride (NaCl) solutions, on the other hand Calcium Chloride will create plugging at oil pores and the aquifer of formation due to chemical reactions between Calcium ions (Ca2+) and Carbon dioxide (CO2) in the well downhole.
In addition, the maximum density of Calcium Chloride solution or other typical salts as a monovalent salt or salt solutions at only 1.5 to 1.6gr/cm3 would not sufficient for high pressure well applications, Cesium Formate with density of 2 gr/cm3 would be sufficient in term of density, but this chemical is very expensive and the Cesium ion is a radioactive element that would emit a radioactive energy that resulting a negative effect to soil and environment.
Those salt solutions mentioned above are generally used as suppressant fluid for medium pressure production wells. For high pressure wells, people tend to' use drilling mud. The problems of using drilling mud is the difficulty to remove the whole mud after the job is finished, ensuring no residual fluid in the formation that would reduce the productivity of oil well due to plugging problems and formation damage. This problems usually are overcome by using high pressure air injected to well in order to clean off formation but this would risk on damage or deformation of the oil well aquifer.
This invention is used to overcome problems described above. In term of providing one type of liquid solutions or fluid that are designed to suppress pressure of high pressured oil and gas production wells. Brief Description of the Invention
In order to overcome problems described above, It is invented one type of fluid to suppress upcoming pressure from high pressure oil and gas drilling and production wells. This fluid would be injected into the oil or gas production wells.
Furthermore, the objective of this invention is to provide a homogen liquid solution with high density in order to suppress the upcoming pressure of oil and gas in the production wells, that in its liquid form, it is possible to be pumped out from the treated well, ensuring no residual fluid. It is requested that the chemical and physical properties of this fluid should be compatible to conditions and environment of oil and gas well aquifer (formation).
It is requested that this fluid can be injected into the oil and gas wells in order to suppress oil or gas pressure temporarily before operation of new wells or production wells. The fluid must be able to suppress oil or gas pressure during maintenance temporarily or permanently.
Furthermore, it is requested that the density of fluid according to this inventions is high density for liquid or homogen liquid. It is preferable at 2.2 gr/cc and most preferable at 1.94 gr/cc.
It is requested that solution or liquid according to this invention does not contain any hardness so that does not risk of reaction with Carbon dioxide that furthermore will create plugging at oil or gas pores at the well aquifer and the well formation.
It is requested that the fluid according to this invention should be homogeneous without precipitation or suspension that would risk for plugging of oil & gas pores at the production well downhole. This fluid must be able to be pumped out from or to oil or gas production wells.
It is requested that the fluid according to this invention have an acidity level (pH) slightly below a normal pH level so that it would be easier to diluted precipitated materials of hardness salts. The preferable pH level is between 2-8 in the oil or gas production well formations.
It is requested that the fluid according to this invention could be used together with other chemicals such as viscosifier or bridging agent to prevent loss, filter media, dispersant, biocide and corrosion inhibitors. It is requested that the fluid according to this invention does not create deformation or damages of the whole formation of oil and gas wells during applications
It is requested that the cost of producing the fluid is cheaper than producing other high density salts.
In order to realize the benefits, and specific characteristic of the fluid according to this invention, it is provided one kind of solution resulted as the mixing between Zinc Bromide (Zn Br ) salts and Natrium Chloride (NaCl), or mixing between Zinc Bromide (ZnBr ) and Sodium Bromide (NaBr) or mixing between Zinc Oxide / Zinc Hydroxide or all type of Zinc ions with Sodium Bromide in water or water based solvents.
Furthermore, the invention would be described in more details.
Detailed Descriptions of the Invention : One kind of solution used to suppress upcoming pressure from the high pressure oil or gas production wells, where in general this fluid is consist of a mixture of minimum one kind of element containing bromide with at least one element containing Zinc with molar ratio of Bromide and Zinc from 1 :2 to 2:1 in water of water based solvents. As described above that the solutions of fluid according to this invention is used to suppress upcoming pressure from high pressure oil or gas production wells.
In more details, fluid or solution according to this invention, is based on a mixture between Solution of Zinc Bromide (ZnBr ) and Natrium Chloride (NaCl) with molar ratio from 1 :2 to 2: 1 in water or other water based solvents. Molar ratio 1 : 2 to 2: 1 would be achieved with the following methods :
1. Direct mixture ZnBr2 with NaCl with molar ratio from 1 :2 to 2: 1 in water or other water based solventss. 2. Mixture of Natrium Bromide (NaBr) with Zinc Chloride (ZnCl2) with Molar ratio from 1 :2 to 2:1. this mixture is performed in such a way so that the final product will contain ZnBr and NaCl in Molar ratio from 1 :2 to 2: 1 in water or other water based solvents.
3. or a mixture of Zinc Bromide (ZnBr2) with Natrium Bromide (NaBr) in molar ratio 1 :2 to 2: 1 in water or other water based solvents.
4. or a mixture of Zinc Oxide/Zinc Hydroxide/all type of Zinc ions with Natrium Bromide (NaBr) with molar ration froml :2 to 2: 1 in water or other water based solvents. Furthermore, the mixing process could be done with heating or not heating process, in atmosphere pressure. Mixing process could be followed up with filtration process in order to screen out the suspended solid or precipitation due to impurity of raw material. This usually happened at high solid content that filtration process is required to screen out the solid particles. The maximum final solid content from solution of fluid according to this invention is up to 92% with range of density of 1.9-2.2 gr/cc. The final solid content could be adjusted to a lower degree corresponding to request. The concentration of this
invention is to achieve a higher density due to high density requirement of oil or gas drilling and production.
Furthermore, in order to adjust the final acidity level (pH) of solution or fluid according to invention, that is 2-8, the application of Ammoma (NH3) as an alkaline element is preferable or Natrium Hidroxide (NaOH) or other alkaline. These can be added by any methods, with still maint-ύning hardness factor of the final solutions.
Furthermore in order to understand the characteristic and benefits of invented fluid, below, it will be explained the positive advantages of the invented fluid compare to existing pressure suppressing fluid for oil and gas wells. The detail characteristic are as follows :
1. Have high density (weight by unit of volume) up to 2.2 gr/cc; relatively heavier for homogen solution fluid, so that will be able to suppress high oil and gas upcoming pressure.
2. Contain no hardness; meaning it will not risk to perform any reactions with carbon dioxide (CO ) in the well formation that furthermore will plug at the oil pores or acquifier of oil.
3. Non suspended homogen solutions, without any risks of plugging due to accumulated particles at the oil pores at the well formations. Besides, the product is designed to be easily pump out from the drilling or production wells.
4. pH range of 2-8 at the geological structure of oil pores and oil and gas well; at some conditions, pH of product may be slightly lower than normal pH (7), that will help dissolving precipitation of acid soluble particles at the well formation. 5. Compatible to other chemicals used at drilling/production of oil and gas such as : viscosifier, loss circulation materials, filter media, dispersant, anti bacteria/microorganism, and corrosion inhibitors
6. Will not react to the geological structure and formation of drilling and production oil and gas wells' so that the product will not create formation damages to the well formation for long term applications.
7. Relatively low production cost compare to other salts, especially for high density salts.
Furthermore to support explanation of invention, below it will be explained the production procedures of fluids according to invention :
Mixing of 48 gr Natrium Bromide (NaBr) and 32 gr Zinc Chloride (ZnCl2) in 12 ml of aquades. Suspension resulted from solution is mixed with magnetic stirrer in 500 ml beaker glass for 15-20 minutes with medium stirring speed. After stirring process, solution and its suspension is aging in room temperature until all particles are completely precipitated. Furthermore, the solution is moved from beaker glass to separating firnnel. Vacuum filtering is performed to separate solution and precipitated materials. Then density and pH will be controlled to meet the targeted average density of 1.94 gr/cc that are ideal to suppress pressure from oil and gas well. In the following table, it will be explained that the physical and chemical characteristic of product invented are very match to expected requirements.
Table 1. Characteristics of fluid resulted from mixing between Zinc Bromide (ZnBr2) with Natrium Chloride (NaCl), or resulted form mixing between Natrium Bromide (NaBr) with Zinc Chloride (ZnCl2), that both of the mixing is performed with Molar ratio
Therefore, this invention has been explained with the above actual procedures. Furthermore, any substances used to form the solutions or fluid can be also substituted with other chemicals or substances with same chemical and physical characteristics. The definition of substances used for this invention do not mean to limit the boundaries of invention. The boundaries of invention are defined in the following claims :
Claims
1. Substances in a liquid form can be used to suppress high pressure from oil ane gas/* drilling and production wells, where this substance involving mixing between at least one substance or salt containing bromide with at least one substance or salt containing natrium . The combination between substance containing bromide with substance containing natrium has characterized with molar ratio of 1 : 2 to 2:1 in water or other water soluble solvents
2. Substance in liquid form used as pressure suppressing fluid for high pressure oil and gas well application as mentioned in claim 1, where substance containing bromide is Zinc Bromide (ZnBr )
3. Substance in liquid form used as pressure suppressing fluid for high pressure oil and gas well applications mentioned in claim 1, where substance containing natrium is Natrium Chloride (NaCl)
4. Substance in liquid form used as pressure suppressing fluid for high pressure oil and gas well applications mentioned in claim 1, where substance containing natrium is Natrium Bromide (NaBr)
5. Substance in liquid form used as pressure suppressing fluid for high pressure oil ". and gas well applications mentioned in claim 1, where substance containing natrium is Natrium Hydroxide (NaOH)
6. Solution between salts containing Zinc Bromide (ZnBr ) and Natrium Chloride (NaCl) in water or other water based solvents can be used as pressure suppressing fluid for high pressure oil and gas wells, where mixing procedures between that salts are as follows : a. Direct mixing between Zinc Bromide (ZnBr2 ) with Natrium Chloride (NaCl) with molar ratio from 1 :2 to 2:1 in water or other water based solvents, performed in atmospheric pressure, with or without heating process. b. To have solution direct or indirectly from NaBr substance with ZnCl2 so that the final product resulted is consist of ZnBr2 and NaCl, performed with :
- Molar ratio from 1 :2 to 2: 1 ;
With water or other water based solvents;
- In atmospheric pressure;
- With or without heating process; For a. and b. :
Total solid contain from the final solution have a maximum of 92% related to weight; have solution density of 1.94-2.2 gr/cc
7. Solution between salt containing Zinc Bromide salts and Natrium Chloride in water or other water based solvents as claimed at claim 6, where in order to adjust the final pH, it will be used alkaline, preferably Ammoma (NH3)
8. Solution between salts containing Zinc Bromide (ZnBr2) and Natrium Chloride (NaCl) in water or other water based solvents as claimed in claim 6 and 7, where the alkaline is Caustic Soda (NaOH)
9. Solution between salts containing Zinc Bromide (ZnBr2) and Natrium Chloride (NaCl) in water or other water based solvents as claimed at claim 6, 7 and 8, with
characterized as the suspended solid particles can be separated from its liquid by using vacuum filtration
10. A substance in a liquid solution form between salts containing Zinc Bromide (ZnBr2) and Natrium Chloride (NaCl) in water or other water based solvents
5 according claim 1 , 2, and 3, that in order to adjust the final pH will be used alkaline, which is ammonia (NH3) or caustic soda (NaOH)
11. A substance in a liquid solution between salts containing Zinc Bromide (ZnBr2) and Natrium Chloride (NaCl) in water or other water based solvents according to claim 1,2, and 3, characterized that the suspended solid particles can be separated 0 from its liquid by using vacuum filtration
12. A substance or solutions between salts containing bromide and natrium, especially Zinc Bromide (ZnBr2) and Natrium Chloride (NaCl) in water or other water based solvents as mentioned in above claims that the pH of final solution is between 2-8. 5 13. A solution between salts containing Zinc Bromide (ZnBr2) and Natrium Bromide
(NaBr) with molar ratio of 1:2 to 2:1 in water or other water based solvents that can be used as pressure suppressing fluid for high pressure oil and gas wells. The mixing of Zinc Bromide and Natrium Bromide could be performed with or without heating process, in atmospheric pressure, which the final solid contain of 0 solution can achieve a maximum level of 92% weight, and have a density of 1.9-
2.2 gr/cc. 14. Solution between salt containing Zinc Bromide salts and Natrium Bromide in water or other water based solvents as claimed at claim 13, where in order to adjust the final pH, it will be used alkaline, preferably Ammonia (NH3) 5 15. Solution between salts containing Zinc Bromide (ZnBr2) and Natrium Bromide
(NaBr) in water or other water based solvents as claimed in claim 13 and 14, where the alkaline is Caustic Soda (NaOH)
16. Solution between salts containing Zinc Bromide (ZnBr2) and Natrium Bromide (NaBr) in water or other water based solvents as claimed at claim 13, 14 and 15,
-iO with characterized as the suspended solid particles can be separated from its liquid by using vacuum filtration
17. A substance in a liquid solution form between salts containing Zinc Bromide (ZnBr2) and Natrium Bromide (NaBr) in water or other water based solvents according claim 1, 2, and 4, that in order to adjust the final pH will be used
-.5 alkaline, which is ammoma (NH3) or caustic soda (NaOH)
18. A substance in a liquid solution between salts containing Zinc Bromide (ZnBr2) and Natrium Bromide (NaBr) in water or other water based solvents according to claim 1,2, and 4, characterized that the suspended solid particles can be separated from its liquid by using vacuum filtration
10 19. A solution between salts containing Zinc Bromide (ZnBr2) and Natrium
Hydroxide (NaOH) in water or other water based solvents that can be used as pressure suppressing liquid for high pressure oil and gas wells. This solution is made by direct mixing between Zinc Oxide or Zinc Hydroxide or other ion Zinc with Sodium Bromide (NaBr) with molar ratio from 1 :2 to 2: 1 in water or other
15 water based solvents, in atmospheric pressure, with or without heating process,
which the final solid contain of solution can achieve a maximum level of 92% weight and have a density of 1.9-2.2 gr/cc
20. Solution between salt containing Zinc Bromide salts and Natrium Hydroxide in water or other water based solvents as claimed at claim 19, where in order to adjust the final pH, it will be used alkaline, preferably Ammoma (NH3)
21. Solution between salts containing Zinc Bromide (ZnBr2) and Natrium Hydroxide (NaOH) in water or other water based solvents as claimed in claim 19 and 20, where the alkaline is Caustic Soda (NaOH)
22. Solution between salts containing Zinc Bromide (ZnBr2) and Natrium Hydroxide (NaOH) in water or other water based solvents as claimed at claim 19, 20 and 21, with characterized as the suspended solid particles can be separated from its liquid by using vacuum filtration
23. A substance in a liquid solution form between salts containing Zinc Bromide (ZnBr2) and Natrium Hydroxide (NaOH) in water or other water based solvents according claim 1 , 2, and 5, that in order to adjust the final pH will be used alkaline, which is ammonia (NH3) or caustic soda (NaOH)
24. A substance in a liquid solution between salts containing Zinc Bromide (ZnBr2) and Natrium Hydroxide (NaOH) in water or other water based solvents according to claim 1,2, and 5, characterized that the suspended solid particles can be separated from its liquid by using vacuum filtration
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2001280029A AU2001280029A1 (en) | 2000-11-06 | 2001-08-13 | Pressure control fluid for high pressure oil and gas well applications |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ID20000951 | 2000-11-06 | ||
| IDP20000951 | 2000-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002036709A1 true WO2002036709A1 (en) | 2002-05-10 |
Family
ID=11005005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ID2001/000004 WO2002036709A1 (en) | 2000-11-06 | 2001-08-13 | Pressure control fluid for high pressure oil and gas well applications |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2001280029A1 (en) |
| WO (1) | WO2002036709A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4046197A (en) * | 1976-05-03 | 1977-09-06 | Exxon Production Research Company | Well completion and workover method |
| WO1988001010A1 (en) * | 1986-07-30 | 1988-02-11 | Great Lakes Chemical Corporation | Calcium-free clear high density fluids |
| US4941982A (en) * | 1986-07-30 | 1990-07-17 | Great Lakes Chemical Corporation | Calcium-free clear high density fluids |
| GB2256448A (en) * | 1991-06-07 | 1992-12-09 | Bromine Compounds Ltd | Process and fluids for the treatment of oil wells |
-
2001
- 2001-08-13 WO PCT/ID2001/000004 patent/WO2002036709A1/en active Application Filing
- 2001-08-13 AU AU2001280029A patent/AU2001280029A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4046197A (en) * | 1976-05-03 | 1977-09-06 | Exxon Production Research Company | Well completion and workover method |
| WO1988001010A1 (en) * | 1986-07-30 | 1988-02-11 | Great Lakes Chemical Corporation | Calcium-free clear high density fluids |
| US4941982A (en) * | 1986-07-30 | 1990-07-17 | Great Lakes Chemical Corporation | Calcium-free clear high density fluids |
| GB2256448A (en) * | 1991-06-07 | 1992-12-09 | Bromine Compounds Ltd | Process and fluids for the treatment of oil wells |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2001280029A1 (en) | 2002-05-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| 122 | Ep: pct application non-entry in european phase |