WO2017007362A1 - Additif composite destiné à la fracturation hydraulique avec des réactifs pour inhiber les dépôts (et variantes) - Google Patents

Additif composite destiné à la fracturation hydraulique avec des réactifs pour inhiber les dépôts (et variantes) Download PDF

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Publication number
WO2017007362A1
WO2017007362A1 PCT/RU2015/000423 RU2015000423W WO2017007362A1 WO 2017007362 A1 WO2017007362 A1 WO 2017007362A1 RU 2015000423 W RU2015000423 W RU 2015000423W WO 2017007362 A1 WO2017007362 A1 WO 2017007362A1
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Prior art keywords
polymer matrix
additive
additive according
polymer
item
Prior art date
Application number
PCT/RU2015/000423
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English (en)
Russian (ru)
Inventor
Анатолий Владимирович МЕДВЕДЕВ
Светлана Анатольевна НАЙДУКОВА
Максим Григорьевич ИВАНОВ
Алексей Владимирович АЛЕКСЕЕВ
Original Assignee
Шлюмберже Текнолоджи Корпорейшн
Шлюмберже Канада Лимитед
Сервисес Петролиерс Шлюмберже
Шлюмберже, Текнолоджи Б.В.
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Application filed by Шлюмберже Текнолоджи Корпорейшн, Шлюмберже Канада Лимитед, Сервисес Петролиерс Шлюмберже, Шлюмберже, Текнолоджи Б.В. filed Critical Шлюмберже Текнолоджи Корпорейшн
Priority to PCT/RU2015/000423 priority Critical patent/WO2017007362A1/fr
Publication of WO2017007362A1 publication Critical patent/WO2017007362A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
    • C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
    • C—CHEMISTRY; METALLURGY
    • 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
    • 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
    • C09K8/536—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning characterised by their form or by the form of their components, e.g. encapsulated material
    • 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
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/62—Compositions for forming crevices or fractures
    • C09K8/66—Compositions based on water or polar solvents
    • C09K8/68—Compositions based on water or polar solvents containing organic compounds
    • 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
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping

Definitions

  • the present invention relates to the field of oil production. More specifically, the invention relates to additives that inhibit deposition in a proppant pack.
  • Hydraulic fracturing is based on the formation of cracks in the zone of the wellbore to increase the permeability of the formation and increase oil production.
  • a proppant proppant
  • the proppant is fed into the crack along with the fluid and remains there, mechanically preventing the crack from closing after the pressure drop. Accordingly, in order to fulfill its function, the proppant must have a certain set of properties. In particular, to increase oil production, it is necessary that the proppant package has sufficient permeability.
  • the permeability of the actual packing of the proppant formed inside the formation is usually significantly lower than the permeability of the pure proppant.
  • the remainder of the polymer fracturing fluid partially clogs the pores and forms a filter cake on the walls of the crack;
  • Inorganic deposits form in cracks and perforations during the extraction of formation water with high salinity; organic deposits form in cracks and perforations during the extraction of oil with a high content of heavy fractions, such as paraffins and (or) asphaltenes.
  • SPE 168615 (Baker Hughes) describes the characteristics and application of a new nanotechnology-based substrate with a large surface area for chemical adsorption, which is used to inhibit the formation of barium sulfate deposits.
  • This product is the latest version of the product declared by Szymczak in 2006, used as an additive to a proppant, has a higher strength than a proppant of medium strength, and a large surface area for chemical adsorption.
  • the disadvantages of this product include insufficient functioning time.
  • US8393395 discloses an aqueous suspension of particles comprising well treatment reagents that are encapsulated in a matrix made of a carrier material insoluble in water.
  • the encapsulating matrix is selected so as to provide a delayed release of the reagent placed in the matrix from the particles into the surrounding fluid after placing the suspended particles in the fracture.
  • the encapsulating matrix is made of a polymer, at least partially amorphous, and having a glass transition temperature below the temperature of the treated formation.
  • restrictions on the method of producing particles (emulsion polymerization) and small particle sizes (200 microns) reduce the effectiveness of the method of delivery of the reagent.
  • the presence of carrier material insoluble in water and in the well fluid leads to clogging of the proppant agent packaging space, which leads to a decrease in its permeability.
  • a key aspect of this solution is the delayed release of chemicals in the wellbore so that their presence provides longer-term protection against organic and inorganic deposits.
  • the present solution is aimed at delayed release of chemical reagents from solid polymer particles into the produced oil-containing liquid.
  • the reagent powder acts as a filler for the liquid matrix to break the polymer matrix
  • this will cause deformation of the balls and long-term blockage of the pore space of the proppant pack with injected polymer ones ( soft) balls, which leads to a decrease in the permeability of the pack of proppant.
  • the specified delayed release is ensured by the use of well-decomposable polymers (such as polylactic acid, polybutylene succinate, polyglycolic acid, polyethylene terephthalate, polyvinyl alcohol, nylon and others, as well as their copolymers, mixtures and modifications) containing inhibitor particles.
  • well-decomposable polymers such as polylactic acid, polybutylene succinate, polyglycolic acid, polyethylene terephthalate, polyvinyl alcohol, nylon and others, as well as their copolymers, mixtures and modifications.
  • the technical task was to create an additive that inhibits deposits, which provides work for long-term goals, namely, the release time of inhibitors of organic or inorganic deposits will be months or more, which ensures a gradual restoration of the initial conductivity of the proppant package.
  • the problem is solved by choosing a specific polymer matrices with the desired degradation time, which controls the length of time the release of the reagent from the matrix.
  • the sizes of particles (granules) provide for the joint transportation of proppant and polymer additive into the depth of the hydraulic fracture, as a result of which the suspension does not separate into the additive and proppant.
  • composite additive As a result of using the composite additive according to the present solution, there is a gradual (delayed, long-term) and controlled release of a chemical reagent (active substance) for treating a hydraulic fracture from a polymer matrix.
  • a chemical reagent active substance
  • composite materials can be used at temperatures below the glass transition temperature.
  • the release time of the active component will be months or more.
  • the integrity (stability, consolidation) of the proppant pack is achieved (particles remain in it, and do not clog the pores of the fracture space).
  • the proposed method of processing the formation including the introduction into the well of a composite additive for inhibiting inorganic deposits or a composite additive for inhibiting organic deposits.
  • the formation of deposits is prevented at the places of formation fluid inflow.
  • inhibitors which include the following chemical agents: inhibiting agents such as paraffin and asphaltene modifiers, crystal growth modifiers and dispersants, sediment cleansers, inorganic scale inhibitors of polymer and inorganic nature, they are added to the polymer material before or in the process of melting the polymer.
  • the specified polymer should be made from a decomposable polymer under formation conditions (such as polylactic acid, polybutylene succinate, polyglycolic acid, polyethylene terephthalate, polyvinyl alcohol, nylon and others, as well as their copolymers, mixtures, modifications and combinations). To ensure the distribution of inhibitors within the polymer matrix, they are thoroughly mixed.
  • particles are added to the fracturing fluid in the form of dry additives at the proppant stage together with the proppant.
  • particles containing inhibitors are evenly distributed among the proppant particles or, in some cases, are intentionally concentrated in the near-wellbore zone.
  • the particles containing the inhibitors are distributed between the proppant particles, which prevents their washing out by the reverse flow at the first stage of production.
  • the polymer begins to decompose slowly at the calculated rate, and a chemical reagent (this inhibitor) is released from media, providing a reduction in the formation of inorganic and organic deposits.
  • Obtaining a polymer-reagent composite by polymer extrusion allows to obtain a higher concentration of the active component in the polymer matrix.
  • concentration of the active component of 20 and more weight percent was easily achieved, while providing a high proportion of the load of the active component (scale inhibitor) in the polymer matrix.
  • extrusion is a more advanced method of manufacturing composite materials as leading to a high content of the active component, which is more advisable from an economic point of view.
  • Figure 1 shows a first embodiment of a composite proppant additive.
  • Figure 2 shows a second embodiment of a polymer modified proppant additive.
  • Fig. 3 shows an example of granules of the first embodiment.
  • FIG. 5 shows an example of granules of a first embodiment based on epoxy resin.
  • Figa shows the dependence of the degree of release of the inhibitor of deposits from the granules when they are kept in water at a temperature of 95 ° C (examples 2015/000423
  • Figb shows the dependence of the degree of release of the inhibitor from the obtained particles when they are kept in water at a temperature of 70 ° C.
  • Fig.7 shows the dependence of the degree of release of the inhibitor from the obtained granules of the additive when they vyderzhivaniya in an aqueous medium at a temperature of 40 ° C.
  • Fig. 8 is a micrograph of a slice of a polylactic acid (PMA) composite particle of Example 3 coated with a cured epoxy resin layer.
  • PMA polylactic acid
  • Fig.9 shows the degree of release of the chemical agent from the polymer matrix for the particles of example 3, uncoated and coated with a layer of epoxy resin.
  • Figure 10 is a comparison of the hydraulic permeability of proppant packs: a pack without a composite additive, a pack with an additive in the form of PLA granules (PMA) (additive 1% of proppant volume) mixed with conventional proppant, and also proppant pack after complete degradation of the PLA granules.
  • PMA PLA granules
  • the present solution comprises powdered inhibitor particles uniformly distributed within a matrix of a degradable polymer.
  • a solution of the scale inhibitor can be mixed evenly with the polymer (see FIG. 1).
  • Particles obtained from the specified composite mixture of polymer and inhibitors may have different shapes and proportions (rods, flakes, granules, ribbons, etc.).
  • the shape of the particles affects the rate of surface degradation of the polymer, and hence the rate of release of the inhibitor reagent.
  • the surface degradation rate of a polymer is higher, the higher the specific surface area of the particles. Therefore, a delayed release of reagent compared to other types of particles will provide granules.
  • the selection of the forms of the granules (elongated shape, cylinders, plates, etc.) provides little flexibility in ensuring the speed of exit of the reagent.
  • the form of the additive is of secondary importance compared to the size of the granules.
  • Larger-sized additive granules due to a larger hydrodynamic radius provide a pellet deposition rate in the working fluid similar to proppant particles. This avoids the separation of the suspension by the type of particles (proppant and additive granules). The additive will be placed evenly throughout the proppant pack.
  • the second embodiment is shown in FIG. 2 and is an extension of the first embodiment.
  • particles of the first embodiment degradable polymer particles with an inhibitor embedded in the polymer matrix are coated with a second polymer with a reduced rate of degradation under the same conditions).
  • the release of the inhibitor from the matrix of the first polymer does not begin until decomposition of the second (external) polymer occurs.
  • the second embodiment provides an additional mechanism for delaying the release of inhibitors.
  • the solid degradable polymer matrix in the additive particles remains neutral with respect to the chemical reagent at the softening temperature of the polymer of the solid polymer matrix or at the polymerization temperature.
  • the polymer matrix is only a temporary carrier of the reagent (an inhibitor of the deposition of inorganic or organic deposits).
  • the incorporation of dry powder into the polymer matrix The polymers PBS (polybutylene succinate), PLA (polylactic acid), and PHB (polyhydroxybutyrate) were selected from the group of thermoplastic polymers that slowly degrade in the aqueous medium at elevated temperatures.
  • Anhydrous copper sulfate (P) with a particle size of 5-10 ⁇ m was chosen as solids as an indicator of the dissolution (degradation) of the polymer matrix, as well as the active component of the additive — an inorganic scale inhibitor (diethylene triamine pentamethylene phosphonic acid or DTPMP — scale inhibitor and corrosion inhibitor) .
  • a composite polymer (granular) additive was obtained by melting a polymer (e.g., PBS, PLA, or PHB) at a temperature slightly above the melting point of the selected polymer. Then, a portion of anhydrous copper sulfate (I) was added to the melt (matrix) with an inorganic scale inhibitor DTPMP with simultaneous stirring.
  • the mass ratio of anhydrous copper sulfate and inhibitor was 1: 3, while the function of anhydrous copper sulfate was only to provide a spectrophotometric method for measuring its concentration as an indicator of the release of a powder additive in an aqueous solution.
  • the weight concentration of the scale inhibitor in the polymer matrix was 15%.
  • this polymer melt with dry additives (inhibitor powder and indicator powder) was poured onto a Teflon substrate, cooled and cut into pieces 0.5-2.5 mm in size (Fig. 3).
  • the obtained additive particles were placed in vessels with deionized water (in a mass ratio of 3: 100) and thermostated at 70 ° C (typical temperature in a number of wells).
  • the concentration of copper cations (an indicator of the reagent yield from the polymer matrix into the solution) was recorded on a spectrophotometer.
  • the dependences of the concentration of the inhibitor in water (recalculated based on the mass ratio of anhydrous copper sulfate and inhibitor 1: 3), as well as the degree of release of the inhibitor from the polymer matrix over time, are shown in 3
  • thermoplastic polymers for example, acrylonitrile butadiene styrene (ABS plastic), acrylic, polyamide, polyethylene, polypropylene, polystyrene, polyvinyl chloride, polybenzimidazole, etc.
  • ABS plastic acrylonitrile butadiene styrene
  • acrylic acrylic
  • polyamide polyethylene
  • polypropylene polypropylene
  • polystyrene polyvinyl chloride
  • polybenzimidazole polybenzimidazole
  • the resulting rods were removed from the molds and cut into pieces so that the final product had the form of cylinders with a height of 0.5-10 mm and a diameter of 1.0 mm (granules).
  • the obtained additive granules were placed in vessels with water, which in turn were thermostated at 70 ° C or at 95 ° C.
  • the concentration of copper cations (the result of the release of copper sulfate from the granules) was recorded on a spectrophotometer.
  • This example demonstrates that the epoxy resin releases a chemical agent that is mixed in it, and the release rate of this reagent is determined by the concentration of the hardener in the resin and the temperature.
  • the slow release of the reagent from the polymer matrix will provide long-term prevention of the formation of inorganic or organic deposits, depending on the nature of the selected reagent.
  • Granules PLA thermoplastic polymer
  • additives were obtained by extrusion on a single screw extruder.
  • Dried PLA granules in an amount of 80 g were mixed with 5 g of dye E1 10 "Sunset” and 15 g of an inorganic scale inhibitor (salts of ethylenediamine tetraacetic acid - EDTA) by dry mechanical stirring. In this case, the dye and inhibitor were thoroughly mixed with polymer granules.
  • Granules with powder were poured into the hopper of the extruder. The mixing zone was heated to 160 ° C, and then the polymer was extruded with additives through a die with a hole diameter of 2 mm. The result was granules with a size of about 2 mm and containing 5% by weight of the dye E1 10 "Sunset” and 15% by weight of an inorganic scale inhibitor (EDTA).
  • the granules were placed in water heated to a temperature of 40 ° C. In this case, the concentration of the dye released from the polymer at various points in time was measured (see Fig. 7). According to the mass ratio of inhibitor and dye, 3: 1, the amount of inhibitor released together with the indicator from the polymer matrix was determined.
  • This example demonstrates that a chemical reagent embedded in a degradable polymer matrix from polylactic acid leaves it for approximately 10 months at a temperature of 40 ° C, while the material of the polymer matrix itself degrades over time and turns into low molecular weight products that are soluble in the formation fluid .
  • thermoplastic polymers for example, acrylonitrile butadiene styrene, acrylic, polyamide, polyethylene, polypropylene, polystyrene, polyvinyl chloride, polybenzimidazole, etc.
  • any other polymer from the group of thermoplastic polymers allows you to choose the appropriate polymer degradation time and the rate of release of the chemical agent.
  • FIG. 8 An example is the possibility of implementing the second embodiment of the solution.
  • the granules of Example 3 were taken and coated with a layer of epoxy resin with a thickness of 30-40 ⁇ m (see Fig. 8). Then, after drying the resin, the particles were placed in vessels with water, which, in turn, were thermostated at 95 ° C. A temperature of 95 ° C was chosen to accelerate the output of degradation of the granules, so that in laboratory conditions for a short time to get a tangible result.
  • Figure 9 shows a comparison of the yield of a chemical agent from the particles of Example 3 (granule without a temporary coating) and from particles coated with an epoxy resin layer. It can be concluded that this coating allowed us to reduce the yield of the chemical agent by about half. The selection of the brand of epoxy resin, as well as the degree of crosslinking by the hardener, will optimize the rate of release of the chemical agent in accordance with the necessary requirements.
  • thermoplastic polymers for example, acrylonitrile butadiene styrene, acrylic, polyamide, polyethylene, polypropylene, polystyrene, polyvinyl chloride, polybenzimidazole, etc.
  • thermosetting polymers for example, based on phenol-formaldehyde, polyester, epoxy and carbides pitches.
  • a typical concentration of a dry additive in a fracturing fluid is about 2 percent of the mass of the fracturing fluid injected into the formation.
  • Standard fracturing work involves the injection of about 2,000 barrels of fluid (320 thousand liters), which allows about 6 thousand kg of dry additive to be pumped into the fracture (M).
  • the upper limit of the concentration of inhibitor in the polymer matrix can be determined by the fact that the granules prepared according to example 1 and example 3 lose their mechanical strength at a mass concentration of the additive above 60%.
  • concentration of inhibitor in the polymer matrix is in the range from 0.25 to 60 weight percent.
  • This example compares the hydraulic conductivity of proppant packs without additives, as well as the mixing of polymer particles.
  • Conductivity experiments were performed in accordance with API 19D.
  • the test samples were pure proppant CarboHSP 20/40, as well as proppant CarboHSP 20/40 with the addition of granules PLA with a concentration of 1% by weight of proppant.
  • Samples were loaded into a conduction cell, providing a surface concentration of 2 psi. foot.
  • the resulting proppant packs were pressurized at 5,000 psi. inch (psi), and then the conduction cell was heated to 121 ° C.
  • Figure 10 presents the obtained results of hydraulic conductivity for pure proppant (without additives / additives), for proppant pack with additive / additive particles (1% PLA particles), as well as for proppant pack after degradation of polymer particles. The results indicate that after polymer degradation, the conductivity is close to the conductivity of a clean proppant pack.
  • this example demonstrates that after the release of the chemical agent and subsequent degradation of the disclosed polymer particles, the hydraulic permeability of the proppant pack remains close to the conductivity of a clean proppant pack.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne les possibilités de stimulation d'une couche productrice de pétrole au moyen de la fracturation hydraulique. L'invention concerne un additif composite qui est injecté avec l'agent de soutènement dans la fissure issue d'une fracturation hydraulique. L'additif comprend un réactif inhibant la sédimentation des dépôts organiques ou inorganiques à partir du liquide issu de couches productrices. Grâce à l'injection dans le puits de forage d'un additif composite à base d'une matrice qui se décompose dans les conditions propres à un puits de forage, on assiste à une libération lente et contrôlée de l'inhibiteur dans le liquide extrait, et on assiste également à un rétablissement de la conductivité de l'emballage de l'agent de soutènement.
PCT/RU2015/000423 2015-07-07 2015-07-07 Additif composite destiné à la fracturation hydraulique avec des réactifs pour inhiber les dépôts (et variantes) WO2017007362A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/RU2015/000423 WO2017007362A1 (fr) 2015-07-07 2015-07-07 Additif composite destiné à la fracturation hydraulique avec des réactifs pour inhiber les dépôts (et variantes)

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PCT/RU2015/000423 WO2017007362A1 (fr) 2015-07-07 2015-07-07 Additif composite destiné à la fracturation hydraulique avec des réactifs pour inhiber les dépôts (et variantes)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113403048A (zh) * 2021-06-19 2021-09-17 甘肃中科聚合石油科技有限公司 一种新型超弹性纳微米深部调剖堵水材料及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985002408A1 (fr) * 1983-11-25 1985-06-06 Exxon Research & Engineering Company Article polymere
EP0224346A2 (fr) * 1985-11-21 1987-06-03 Union Oil Company Of California Traitement pour enlever le tartre dans des gisements souterrains
WO2001094744A1 (fr) * 2000-06-06 2001-12-13 T R Oil Services Limited Traitement d'un puits de forage par des microcapsules
US20110127039A1 (en) * 2007-07-27 2011-06-02 Garcia-Lopez De Victoria Marieliz System, method, and apparatus for acid fracturing with scale inhibitor protection
WO2012036862A1 (fr) * 2010-09-17 2012-03-22 Services Petroliers Schlumberger Mécanismes pour le traitement de formations souterraines avec des additifs enrobés

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985002408A1 (fr) * 1983-11-25 1985-06-06 Exxon Research & Engineering Company Article polymere
EP0224346A2 (fr) * 1985-11-21 1987-06-03 Union Oil Company Of California Traitement pour enlever le tartre dans des gisements souterrains
WO2001094744A1 (fr) * 2000-06-06 2001-12-13 T R Oil Services Limited Traitement d'un puits de forage par des microcapsules
US20110127039A1 (en) * 2007-07-27 2011-06-02 Garcia-Lopez De Victoria Marieliz System, method, and apparatus for acid fracturing with scale inhibitor protection
WO2012036862A1 (fr) * 2010-09-17 2012-03-22 Services Petroliers Schlumberger Mécanismes pour le traitement de formations souterraines avec des additifs enrobés

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113403048A (zh) * 2021-06-19 2021-09-17 甘肃中科聚合石油科技有限公司 一种新型超弹性纳微米深部调剖堵水材料及其制备方法

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