WO2010104410A1 - Procédé de régulation de la perméabilité d'une couche pétrolifère hétérogène - Google Patents
Procédé de régulation de la perméabilité d'une couche pétrolifère hétérogène Download PDFInfo
- Publication number
- WO2010104410A1 WO2010104410A1 PCT/RU2009/000106 RU2009000106W WO2010104410A1 WO 2010104410 A1 WO2010104410 A1 WO 2010104410A1 RU 2009000106 W RU2009000106 W RU 2009000106W WO 2010104410 A1 WO2010104410 A1 WO 2010104410A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sludge
- permeability
- water
- oil
- production
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000035699 permeability Effects 0.000 title claims abstract description 20
- 239000010802 sludge Substances 0.000 claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000013505 freshwater Substances 0.000 claims abstract description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 9
- 239000002351 wastewater Substances 0.000 claims abstract description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 6
- 239000002699 waste material Substances 0.000 claims abstract description 6
- 238000005086 pumping Methods 0.000 claims abstract description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 3
- 239000012535 impurity Substances 0.000 claims abstract description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims abstract description 3
- 239000000347 magnesium hydroxide Substances 0.000 claims abstract description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims abstract description 3
- 239000011780 sodium chloride Substances 0.000 claims abstract description 3
- 239000000725 suspension Substances 0.000 claims abstract 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract 2
- 239000000920 calcium hydroxide Substances 0.000 claims abstract 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract 2
- 239000012267 brine Substances 0.000 claims description 11
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract description 7
- 229920006395 saturated elastomer Polymers 0.000 abstract description 5
- 239000001175 calcium sulphate Substances 0.000 abstract description 2
- 235000011132 calcium sulphate Nutrition 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000007900 aqueous suspension Substances 0.000 abstract 2
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 2
- 238000000605 extraction Methods 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 10
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 238000001914 filtration Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- LRKMVRPMFJFKIN-UHFFFAOYSA-N oxocalcium hydrate Chemical compound [O].O.[Ca] LRKMVRPMFJFKIN-UHFFFAOYSA-N 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
Definitions
- a known method of developing an oil reservoir including injecting into the formation through an injection well an aqueous solution of a multivalent metal salt, an aqueous alkali solution, followed by injection of a displacing agent (patent N.2P7143, MGZH E 21 B 43/22, 33 / 138,1996).
- the disadvantage of this method is the low insulation efficiency of the washed highly permeable formation channels, the high cost of the reagents.
- the closest method of the same purpose to the claimed invention in terms of essential features is a method of developing an irrigated oil reservoir that is heterogeneous in geological structure, including injecting an aqueous solution of ammonium chloride into the formation through injection wells and producing oil through production wells (RF patent JU22115801, IPC 6 E 21 B 43/22, 1997).
- the disadvantage of this method is the insufficient reduction in the permeability of a heterogeneous oil reservoir, as well as the complexity of preparing the used aqueous solutions of salts, as well as the high cost of the reagents.
- the task of the invention is to create an effective a method for controlling the permeability of a heterogeneous oil reservoir by reducing the permeability of highly permeable zones of a water-saturated reservoir.
- the problem is solved in that in a method for controlling the permeability of an inhomogeneous oil formation, including injecting an aqueous solution of sludge into the formation through injection wells, followed by pumping an aqueous solution of metal salts and oil production through production wells, according to the invention, the sludge of a cleaning brine is pumped as said sludge soda production from the last stage of production between dividing rims from fresh water, and mineral water as a water solution of metal salts annuyu waste water, wherein the punching is carried trimmed fresh water in a volume equal to the volume of brine purification sludge, as well is stopped at 24 hours.
- the essence of the proposed method consists in sequentially pumping into the flooded oil reservoir through the injection well an aqueous solution of the sludge from the treatment brine - a waste from the production of soda between separation rims from fresh water, followed by pumping of mineralized wastewater.
- An aqueous solution of sludge brine treatment - a waste of soda production is formed at the last stage of production.
- the aqueous solution of the purification sludge is an aqueous dispersion of a white-gray color with a precipitated, jelly-like mass. Consists of solid and liquid phases. The density is -1.20-1.50 g / cm 3
- the hazard class it belongs to class 4. When transporting does not require additional safety measures. Environmentally friendly.
- the mechanism of the effect of the water sludge from the brine on the filtration of the formation fluid is to reduce the flow of the displacing agent through the highly permeable flooded reservoir, the direction of the flow to the less flooded area, and the involvement of layers not covered by flooding in the development.
- a decrease in the flow of the displacing agent through the watered collector is achieved by increasing the fraction of the solid phase due to the precipitate formed.
- Mixing of an aqueous solution of sludge from the brine of treatment with mineralized wastewater takes place directly in the watered collector.
- Redistribution of the flow of displacing agent helps to reduce the water content of production wells, increase oil production.
- the effectiveness of the method was determined experimentally by below the described technique.
- Example 1 (the proposed method). For filtration, samples were taken, each of which is cemented quartz sand with a diameter of 40 mm and a length of 60 mm. The volume of the burrow space is 15 cm. The sample is placed in a core holder and saturated with formation water with a density of 1.107 g / cm. "The initial permeability is determined at a constant pressure drop of 0.01 MPa, which is 3.66 ⁇ m. The experiments are carried out at a temperature of 20 ° C and constant filtration rate of 0.5 m / day.
- Example 2 The experimental site is represented by one injection and 5 producing wells.
- the exploited object is terrigenous Devonian (Di layer).
- the reservoir properties of the formation are as follows: effective thickness of the formation is 7.5 m; formation porosity - 0.22; injection well injectivity 550 m 3 / cit. Production wells production rates - 1.0-3.3 t / day.
- the water content of the extracted products is 84.3-98% (see table. 2).
- the proposed method is carried out in the following order.
- the well is stopped. After thorough mixing in the measuring unit of the cementing unit, 8 m 3 of treatment brine sludge, separated by two freshwater rims of 2 m each, is pumped into the reservoir for 24 m min., Mineralized wastewater with a density of 1107 kg / m.
- the well is stopped for 72 hours and put into operation. After exposure, oil production rates increased to 1.6-4.0 tons / day, that is, 30.2%.
- Water cut of wells decreased to 75-90.3%, i.e. by 8.5%.
- the injectivity of the injection well decreased to 480 mVsut, i.e. 12.7%
- Comparative analysis of geological and field parameters shows that the degree of reduction of water cut in the present method is 1.7 times higher, and the degree of increase in oil production is 2 times higher than in the known method.
- the results of the analysis of the operating parameters of production and injection wells show that the proposed method is more effective than known as water-insulating ability, and to increase oil production.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Treatment Of Sludge (AREA)
Abstract
L'invention concerne le domaine de l'industrie d'extraction pétrolière et gazière et notamment des procédés d'expression de pétrole résiduel, qui réduisent la perméabilité des couches inondées, permettent le développement de zones pétrolifères à perméabilité réduite et augmentent le rendement pétrolier. Elle permet de créer un procédé efficace de régulation de la perméabilité d'une couche pétrolifère hétérogène grâce à la diminution de la perméabilité des zones hautement perméables d'un collecteur saturé d'eau. Le procédé de régulation de la perméabilité d'une couche pétrolifère hétérogène consiste à y injecter une suspension de boue constituant des déchets de fabrication de soude dans des épaississeurs de Dorr entre les gaines de séparation d'eau douce, à exprimer de l'eau potable avec des gaines de séparation dans des volumes égaux à ceux de la suspension puis à arrêter l'exploitation du puits pendant 24 heures. On utilise en tant que suspension aqueuse des boues constituant des déchets de fabrication de soude des boues provenant du stade ultime de fabrication et possédant la composition suivante, g/l : carbonate de calcium - de 80,0 à 90,0, hydroxyde de calcium, - de 2,0 à 10,0, hydroxyde de magnésium - 4,0-5,0, sulfate de calcium - 0,4 à 0,6, chlorure de sodium - 300, hydroxyde de sodium - 2,0, le reste comprenant les impuretés et l'eau. En outre, on injecte par pompage des eaux usées minéralisées avec une densité de 1,107 g/cm3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/RU2009/000106 WO2010104410A1 (fr) | 2009-03-10 | 2009-03-10 | Procédé de régulation de la perméabilité d'une couche pétrolifère hétérogène |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/RU2009/000106 WO2010104410A1 (fr) | 2009-03-10 | 2009-03-10 | Procédé de régulation de la perméabilité d'une couche pétrolifère hétérogène |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010104410A1 true WO2010104410A1 (fr) | 2010-09-16 |
Family
ID=42728539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/RU2009/000106 WO2010104410A1 (fr) | 2009-03-10 | 2009-03-10 | Procédé de régulation de la perméabilité d'une couche pétrolifère hétérogène |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2010104410A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507864A (zh) * | 2016-01-27 | 2016-04-20 | 中国石油天然气股份有限公司 | 一种含油污泥调剖专用成套设备 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4009755A (en) * | 1976-03-17 | 1977-03-01 | Union Oil Company Of California | Selectively controlling the flow of fluids through subterranean formations |
| RU2117143C1 (ru) * | 1996-12-31 | 1998-08-10 | Акционерное общество открытого типа Нефтяная компания "Приобье" | Способ разработки нефтяной залежи |
| RU2212529C1 (ru) * | 2002-01-08 | 2003-09-20 | Дочернее общество с ограниченной ответственностью "Башкирский научно-исследовательский и проектный институт нефти" Открытого акционерного общества "Акционерная нефтяная компания "Башнефть" | Способ регулирования проницаемости неоднородного нефтяного пласта |
| RU2272901C1 (ru) * | 2004-11-01 | 2006-03-27 | Евгений Николаевич Сафонов | Способ регулирования проницаемости неоднородного нефтяного пласта |
-
2009
- 2009-03-10 WO PCT/RU2009/000106 patent/WO2010104410A1/fr active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4009755A (en) * | 1976-03-17 | 1977-03-01 | Union Oil Company Of California | Selectively controlling the flow of fluids through subterranean formations |
| RU2117143C1 (ru) * | 1996-12-31 | 1998-08-10 | Акционерное общество открытого типа Нефтяная компания "Приобье" | Способ разработки нефтяной залежи |
| RU2212529C1 (ru) * | 2002-01-08 | 2003-09-20 | Дочернее общество с ограниченной ответственностью "Башкирский научно-исследовательский и проектный институт нефти" Открытого акционерного общества "Акционерная нефтяная компания "Башнефть" | Способ регулирования проницаемости неоднородного нефтяного пласта |
| RU2272901C1 (ru) * | 2004-11-01 | 2006-03-27 | Евгений Николаевич Сафонов | Способ регулирования проницаемости неоднородного нефтяного пласта |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507864A (zh) * | 2016-01-27 | 2016-04-20 | 中国石油天然气股份有限公司 | 一种含油污泥调剖专用成套设备 |
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