SU1268715A1 - Method of preventing deposition of inorganic salts in oilfield equipment - Google Patents
Method of preventing deposition of inorganic salts in oilfield equipment Download PDFInfo
- Publication number
- SU1268715A1 SU1268715A1 SU833615648A SU3615648A SU1268715A1 SU 1268715 A1 SU1268715 A1 SU 1268715A1 SU 833615648 A SU833615648 A SU 833615648A SU 3615648 A SU3615648 A SU 3615648A SU 1268715 A1 SU1268715 A1 SU 1268715A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- solution
- inhibitor
- alkali
- soda
- deposition
- Prior art date
Links
- 150000003839 salts Chemical class 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title claims abstract description 6
- 230000008021 deposition Effects 0.000 title claims abstract description 5
- 239000000243 solution Substances 0.000 claims abstract description 17
- 239000003112 inhibitor Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 6
- 239000003513 alkali Substances 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910001424 calcium ion Inorganic materials 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims 1
- 239000010452 phosphate Substances 0.000 claims 1
- 239000012266 salt solution Substances 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 8
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 5
- 239000003960 organic solvent Substances 0.000 abstract description 2
- 239000002585 base Substances 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 230000002950 deficient Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000008398 formation water Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010944 pre-mature reactiony Methods 0.000 description 1
- 239000011780 sodium chloride 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Изобретение относитс к нефт ной промышленности и предназначено дл предотвращени отложений неорганических солей в скважинном оборудовании и в системах сбора нефти. Цель изобретени - улучшение осаждени ингибитора (И) в призабойной зоне в любых типах коллекторов. В обрабатываемый пласт закачивают 0,5-5,0 мас.% раствора И, приготовленного на пластовой воде, подкисленной до рН менее 2,0 сол ной кислотой и содержащей не менее 2,0 г/л ионов кальци . До и после закачки закачивают 0,5-2,0 мас.% раствора соды или щелочи. Дл предотвращени смешивани И с раствором соды или щелочи используетс инертна жидкость (ИЖ). В качестве ИЖ примен ют органические растворители, в частности газовый конденсат. Указанные компоненты продавливают вглубь пласта с помощью закачиваемой жидкости. Раствор И готов т в металлической емкости (Л путем смешивани И солеотложений на фосфорорганической основе, сол ной кислоты и пластовой воды с ионами кальци . Дл осуществлени данного способа используютс недефицитные материалы. 2 з.п. ф-лы.The invention relates to the petroleum industry and is intended to prevent the deposition of inorganic salts in downhole equipment and oil recovery systems. The purpose of the invention is to improve the deposition of the inhibitor (I) in the bottomhole zone in all types of reservoirs. A 0.5–5.0 wt.% Solution of A prepared in produced water acidified to a pH of less than 2.0 with hydrochloric acid and containing at least 2.0 g / l calcium ions is pumped into the treated formation. Before and after the injection is injected 0.5-2.0 wt.% Solution of soda or alkali. Inert liquid (IL) is used to prevent mixing with soda or alkali solution. Organic solvents, in particular gas condensate, are used as IL. These components are forced into the reservoir by means of the injected fluid. Solution I is prepared in a metal container (L by mixing And scaling on an organophosphorus base, hydrochloric acid and produced water with calcium ions. Non-deficient materials are used to implement this method. 2 Cp f-crystals.
Description
Изобретение относится к нефтяной промышленности и может быть использовано для предотвращения отложений неорганических солей в призабойной зоне пласта, в' скважинном оборудова- 5 нии и в системах сбора, подготовки и транспорта нефти.The invention relates to the oil industry and can be used to prevent inorganic salt deposits in the bottomhole formation zone, in downhole equipment and in oil collection, treatment and transportation systems.
Цель изобретения - улучшение осаждения ингибитора в призабойной зоне в любых типах коллекторов. ЮThe purpose of the invention is to improve the deposition of the inhibitor in the bottomhole zone in any type of reservoir. YU
Способ осуществляют следующим образом.The method is as follows.
В обрабатываемый пласт закачивают 0,5-5,0 мас.% предварительно подготовленного раствора ингибитора на 15 пластовой воде, подкисленной до pH менее 2,0 соляной кислотой и содержащей не менее 2,0 г/л ионов кальция.0.5-5.0 wt.% Of a pre-prepared inhibitor solution in 15 formation water, acidified to a pH of less than 2.0 hydrochloric acid and containing at least 2.0 g / l calcium ions, is pumped into the treated formation.
До или после закачки раствора ингибитора в пласт закачивают 0,5- 20Before or after injection of the inhibitor solution, 0.5-20 are injected into the reservoir
2,0 мас.% растора соды или щелочи. В качестве буферной прослойки, для избежания преждевременного реагирования между раствором ингибитора и раствором соды или щелочи закачивается инертная 25 жидкость, В качестве инертной жидкости используются органические растворители, в частности газовый конденсат.2.0 wt.% Raster of soda or alkali. An inert liquid 25 is pumped as a buffer layer to avoid premature reaction between an inhibitor solution and a solution of soda or alkali. Organic solvents, in particular gas condensate, are used as an inert liquid.
Затем закачивают жидкость для про- 30 давки смеси вглубь пласта и скважину закрывают на реагирование не менее чем на 2 ч.Then, fluid is pumped to push the mixture deep into the reservoir and the well is closed for a response of at least 2 hours.
Объем продавочной жидкости определяется заданной глубиной продавки в пласт.The volume of displacement fluid is determined by the specified depth of displacement into the reservoir.
Для приготовления смеси ингибитора с раствором соли многовалентного металла используют металлическую ем-To prepare a mixture of an inhibitor with a solution of a salt of a multivalent metal, a metal capacitor is used.
Раствор перемешивают по схеме емкость - насос - емкость.The solution is mixed according to the scheme capacity - pump - capacity.
В другой емкости готовят 1,0мас.% раствора каустической сода с объеме 5000 л.In another container, a 1.0 wt.% Caustic soda solution with a volume of 5000 liters is prepared.
В качестве проволочной жидкости используется газовый конденсат.Gas wire condensate is used as wire fluid.
В промытую горячей водой скважину агрегатом ЦА--320 закачивают приготовленную смесь ингибитора с пластовой жидкостью, вслед за ней закачивают 1000 л газового конденсата, потом раствор каустической сода и все это продавливают в пласт 40000 л газового конденсата. Скважина останавливается на 12 ч, а затем пускается в работу.The prepared mixture of an inhibitor with formation fluid is pumped into a well washed with hot water by a TsA-320 unit, then 1000 liters of gas condensate are pumped after it, then a solution of caustic soda and all this is forced into a formation of 40,000 liters of gas condensate. The well stops for 12 hours and then is put into operation.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU833615648A SU1268715A1 (en) | 1983-07-06 | 1983-07-06 | Method of preventing deposition of inorganic salts in oilfield equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU833615648A SU1268715A1 (en) | 1983-07-06 | 1983-07-06 | Method of preventing deposition of inorganic salts in oilfield equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1268715A1 true SU1268715A1 (en) | 1986-11-07 |
Family
ID=21072196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU833615648A SU1268715A1 (en) | 1983-07-06 | 1983-07-06 | Method of preventing deposition of inorganic salts in oilfield equipment |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1268715A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2169752C2 (en) * | 1995-10-03 | 2001-06-27 | Нор Индастриз, Инк. | Cleaning composition, method for cleaning oil and gas wells, pipelines, casing tubes, and productive formations, method for removing excessive water, sediments, or both from produced crude oil, and method for hydraulic breakdown of formation |
| RU2209936C2 (en) * | 2001-09-20 | 2003-08-10 | Хавкин Александр Яковлевич | Method of thermochemical treatment of oil formation |
| RU2484238C1 (en) * | 2012-02-16 | 2013-06-10 | ООО "РН-УфаНИПИнефть" | Method for preventing deposits of non-organic salts |
-
1983
- 1983-07-06 SU SU833615648A patent/SU1268715A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Патент US № 3704750, кл. 166-279, опублик. 1972. Патент US .3633672, кл. 166-279, опублик. 1970. * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2169752C2 (en) * | 1995-10-03 | 2001-06-27 | Нор Индастриз, Инк. | Cleaning composition, method for cleaning oil and gas wells, pipelines, casing tubes, and productive formations, method for removing excessive water, sediments, or both from produced crude oil, and method for hydraulic breakdown of formation |
| RU2209936C2 (en) * | 2001-09-20 | 2003-08-10 | Хавкин Александр Яковлевич | Method of thermochemical treatment of oil formation |
| RU2484238C1 (en) * | 2012-02-16 | 2013-06-10 | ООО "РН-УфаНИПИнефть" | Method for preventing deposits of non-organic salts |
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