WO2012008819A2 - Seawater-based polymeric-fluid composition for petroleum-well drilling - Google Patents
Seawater-based polymeric-fluid composition for petroleum-well drilling Download PDFInfo
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- WO2012008819A2 WO2012008819A2 PCT/MX2011/000087 MX2011000087W WO2012008819A2 WO 2012008819 A2 WO2012008819 A2 WO 2012008819A2 MX 2011000087 W MX2011000087 W MX 2011000087W WO 2012008819 A2 WO2012008819 A2 WO 2012008819A2
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- 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
- C09K8/06—Clay-free compositions
- C09K8/08—Clay-free compositions containing natural organic compounds, e.g. polysaccharides, or derivatives thereof
- C09K8/10—Cellulose or derivatives thereof
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- 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
- C09K8/06—Clay-free compositions
- C09K8/12—Clay-free compositions containing synthetic organic macromolecular compounds or their precursors
Definitions
- the present invention relates to the oil industry in general, in particular it relates to the media, systems and fluid compositions used in the drilling of oil wells and more specifically refers to the composition of a polymeric fluid based on seawater as a continuous phase.
- the drilling of oil wells in producing, depleted, fractured areas, with loss of circulation, vertical and directed wells with high angles, wells with problems of instability of the hole and hydratable clays, as well as where there is the difficulty of cleaning the hole.
- a novel composition of a polymeric fluid based on seawater as a continuous phase for the drilling of oil wells that allows drilling to be carried out facilitating operation in producing, depleted, fractured areas, with loss of circulation, vertical wells and directed at high angles, wells with problems of instability of the hole and hydratable clays, as well as where there is the difficulty of cleaning the hole; It would provide advantages over known fluids.
- the present invention has as its main objective to make available a novel composition of a polymeric fluid based on seawater as a continuous phase used for the drilling of oil wells that facilitates the operation of drilling in producing, depleted, fractured, lost areas. of circulation, vertical wells and directed with high angles, wells with problems of instability of the hole and hydratable clays, as well as where there is the difficulty of cleaning the hole.
- Another object of the invention is to make said novel composition of a polymeric sea water based fluid available as a continuous phase used for drilling wells. tankers, which also have excellent Theological properties suitable for cleaning, hole stability and formation inhibition.
- Another objective of the invention is to make said novel composition of a polymeric seawater based polymer available as a continuous phase used for drilling oil wells, which also avoids the incorporation of clays, which allows minimizing low gravity solids, which allows improving hydraulics and allow an increase in penetration speed.
- Still another of the objectives of the invention is to make said novel composition of a polymeric water-based polymer fluid available as a continuous phase used for drilling oil wells, which also allows to improve the cleanliness of the directed and high-angle holes.
- Another object of the invention is to make said novel composition of a polymeric water-based polymer fluid available as a continuous phase used for drilling oil wells, which also minimizes the cost of operation.
- Yet another object of the invention is to make said novel composition of a polymeric water-based polymer fluid available as a continuous phase used for drilling oil wells, which also employs biodegradable products. that make it environmentally friendly.
- Still another object of the invention is to make available said novel composition of a polymeric fluid based on seawater as a continuous phase used for drilling oil wells, which is also a solids-free composition and allows to replace fluids that employ highly polluting continuous phases. And all those qualities and objectives that will become apparent when making a general and detailed description of the present invention supported by the illustrated modalities.
- composition of polymeric fluid based on seawater as a continuous phase for the drilling of oil wells in producing formations, depleted, fractured, with loss of circulation, vertical wells and directed at high angles, wells with problems of instability of the hole and hydratable clays, as well as where there is the difficulty of cleaning the hole.
- the fluid is a fluid free of solids with good carrying capacity; offers optimal inhibition of shales, allowing the improvement of operating conditions and influencing cost reduction, especially due to the high consumption of diesel in the low density fluid.
- the formulation uses biodegradable products with environmental care in mind.
- Said composition comprises organic chemical inhibitors and salts to control the swelling of clays using organic inhibitor molecules in the fluids of the clay surface, where they compete with the water molecules for the reactive sites of the clays and therefore serve to reduce the swelling of the clay
- the composition comprises seawater as a continuous phase; at least one viscosifier, preferably high purity Xantana Gum that allows to obtain an excellent carry and suspension in the fluid improving the cleaning; at least one filtrate reducer preferably consisting of a regular grade high purity polyanionic cellulose which further aids inhibition; at least one filtrate reducer which preferably consists of a derivative of complex polyethers and that modify the rheology; at least one chemical inhibitor of polyglycol-based shales to prevent the hydration of clays designed to work with high salinities due to their relatively high fog point and to maintain their inhibitory capacity; potassium chloride salt as a clay inhibitor; at least one alkalizing element, pH controller and magnesium precipitate, preferably caustic soda; at least one calcium sequestrant, preferably carbonate of sodium (ASH soda) to precipitate calcium from seawater and for polymers to react and optimize their performance.
- at least one viscosifier preferably high purity Xantana Gum that allows to obtain an excellent carry and suspension in the fluid improving the cleaning
- composition is based on determining, by means of a rotational viscometer, the rheological and thixotropic properties of a fluid under given conditions, which must be maintained in a suitable range, to optimize the cleanliness of the well being drilled.
- Stability refers to having an excellent formation inhibition using glycol based inhibitors; the formations that are inhibited are clays and shales.
- Said composition quantitatively comprises the following values for 1 m 3 of fluid: seawater in an amount of 962.5 l / m 3 ; ASH soda in an amount of 1.5 Kg / m 3 ;; High quality xanthic gum in an amount of 9.0 lt / m 3 , regular grade polyanionic cellulose in an amount of 4.0 Kg / m 3 ; polymer derived from ether complexes in an amount of 6.0 Kg / m 3 ; polyglycols in an amount of 12.0 lt / m 3 and potassium chloride in an amount of 18.0 Kg / m 3. , caustic soda in an amount of 2.0 Kg / m 3 .
- the density of the fluid can be managed in values of 1.02 gr / cc to 1.40 gr / cc, the system being densified with calcium carbonate and / or Barite.
- the polymeric fluid composition is designed to drill producing areas, depleted, fractured, with lost circulation; vertical wells, directed with high angles and horizontal; in wells with problems of instability of the hole and clays highly hydratable, also where there is the difficulty of cleaning the hole.
- composition of the fluid offers environmental advantages, minimizing the costs and damages as they are clean fluids.
- Drill hydratable formations with dispersible clays Drill hydratable formations with dispersible clays.
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Abstract
The present invention relates to the composition of a seawater-based polymeric fluid as continuous phase for petroleum-well drilling, which is characterized in that it comprises, per cubic metre of fluid: seawater as continuous phase in an amount of 957.7 L; soda ash in an amount of 1.0 kg, as calcium sequestrant; caustic soda in an amount of 2.0 kg as alkalinizing element, pH controller and magnesium precipitator; regular-grade polyanionic cellulose in an amount of 4.0 kg as filtrate reducer; high-quality xanthan gum in an amount of 6.0 kg as viscosifying agent to generate excellent transportation and suspension in the fluid, thereby enhancing cleanliness; glycols in an amount of 8.0 kg as lutite inhibitor; and potassium chloride in an amount of 10.0 kg as clay inhibitor.
Description
COMPOSICIÓN DE FLUIDO POLIMERICO BASE AGUA DE MAR PARA LA PERFORACIÓN DE POZOS PETROLEROS COMPOSITION OF POLYMERIC FLUID BASE SEA WATER FOR THE PERFORATION OF OIL WELLS
CAMPO DE LA INVENCIÓN FIELD OF THE INVENTION
La presente invención se relaciona con la industria petrolera en general, en lo particular se relaciona con los medios, sistemas y composiciones fluidas empleadas en la perforación de pozos petroleros y más específicamente está referida a composición de un fluido polimérico base agua de mar como fase continua para la perforación de pozos petroleros en zonas productoras, depletadas, fracturadas, con pérdida de circulación, pozos verticales y dirigidos con altos ángulos, pozos con problemas de inestabilidad del agujero y arcillas hidratables, así como donde existe la dificultad de limpieza del agujero. The present invention relates to the oil industry in general, in particular it relates to the media, systems and fluid compositions used in the drilling of oil wells and more specifically refers to the composition of a polymeric fluid based on seawater as a continuous phase. for the drilling of oil wells in producing, depleted, fractured areas, with loss of circulation, vertical and directed wells with high angles, wells with problems of instability of the hole and hydratable clays, as well as where there is the difficulty of cleaning the hole.
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
Durante las operaciones de perforación de pozos petroleros, al circular el fluido de control a través del agujero y estar en contacto con la formación, se promueve la hidratación de las lutítas reactivas, con la consecuente desestabilización de las paredes del pozo, debido al inc amiento, derrumbes, y/o fracturamientos; lo que se ha hecho necesario el empleo de sistemas que inhiban la dispersión e hidratación de lutitas.
Una composición novedosa de un fluido polimérico base agua de mar como fase continua para la perforación de pozos petroleros que permita efectuar perforaciones facilitando la operación en zonas productoras, depletadas, fracturadas, con pérdida de circulación, pozos verticales y dirigidos con altos ángulos, pozos con problemas de inestabilidad del agujero y arcillas hidratables, asi como donde existe la dificultad de limpieza del agujero; brindaría ventajas con respecto de los fluidos ya conocidos. During the drilling operations of oil wells, by circulating the control fluid through the hole and being in contact with the formation, hydration of the reactive shales is promoted, with the consequent destabilization of the well walls, due to the incipient , landslides, and / or fractures; what has become necessary the use of systems that inhibit the dispersion and hydration of shales. A novel composition of a polymeric fluid based on seawater as a continuous phase for the drilling of oil wells that allows drilling to be carried out facilitating operation in producing, depleted, fractured areas, with loss of circulation, vertical wells and directed at high angles, wells with problems of instability of the hole and hydratable clays, as well as where there is the difficulty of cleaning the hole; It would provide advantages over known fluids.
OBJETIVOS DE LA INVENCION La presente invención tiene como objetivo principal hacer disponible una composición novedosa de un fluido polimérico base agua de mar como fase continua empleada para la perforación de pozos petroleros que facilite la operación de perforación en zonas productoras, depletadas, fracturadas, con pérdida de circulación, pozos verticales y dirigidos con altos ángulos, pozos con problemas de inestabilidad del agujero y arcillas hidratables, así como donde existe la dificultad de limpieza del agujero. Otro objetivo de la invención es hacer disponible dicha composición novedosa de un fluido polimérico base agua de mar como fase continua empleada para la perforación de pozos
petroleros, que además tenga excelentes propiedades Teológicas adecuadas para la limpieza, estabilidad del agujero e inhibición de la formación. Otro objetivo de la invención es hacer disponible dicha composición novedosa de un fluido polimérico base agua de mar como fase continua empleada para la perforación de pozos petroleros, que además evite la incorporación de arcillas, que permita minimizar los sólidos de baja gravedad, que permita mejorar la hidráulica y permita un incremento en la velocidad de penetración . OBJECTIVES OF THE INVENTION The present invention has as its main objective to make available a novel composition of a polymeric fluid based on seawater as a continuous phase used for the drilling of oil wells that facilitates the operation of drilling in producing, depleted, fractured, lost areas. of circulation, vertical wells and directed with high angles, wells with problems of instability of the hole and hydratable clays, as well as where there is the difficulty of cleaning the hole. Another object of the invention is to make said novel composition of a polymeric sea water based fluid available as a continuous phase used for drilling wells. tankers, which also have excellent Theological properties suitable for cleaning, hole stability and formation inhibition. Another objective of the invention is to make said novel composition of a polymeric seawater based polymer available as a continuous phase used for drilling oil wells, which also avoids the incorporation of clays, which allows minimizing low gravity solids, which allows improving hydraulics and allow an increase in penetration speed.
Aún otro de los objetivos de la invención es hacer disponible dicha composición novedosa de un fluido polimérico base agua de mar como fase continua empleada para la perforación de pozos petroleros, que además permita mejorar la limpieza de los agujeros dirigidos y con alto ángulo. Still another of the objectives of the invention is to make said novel composition of a polymeric water-based polymer fluid available as a continuous phase used for drilling oil wells, which also allows to improve the cleanliness of the directed and high-angle holes.
Otro de los objetivos de la invención es hacer disponible dicha composición novedosa de un fluido polimérico base agua de mar como fase continua empleada para la perforación de pozos petroleros, que además minimice el costo de operación. Another object of the invention is to make said novel composition of a polymeric water-based polymer fluid available as a continuous phase used for drilling oil wells, which also minimizes the cost of operation.
Aún otro de los objetivos de la invención es hacer disponible dicha composición novedosa de un fluido polimérico base agua de mar como fase continua empleada para la perforación de pozos petroleros, que además emplee productos biodegradables
que lo convierten en amigable para el medio ambiente. Yet another object of the invention is to make said novel composition of a polymeric water-based polymer fluid available as a continuous phase used for drilling oil wells, which also employs biodegradable products. that make it environmentally friendly.
Todavía otro objetivo de la invención es hacer disponible dicha composición novedosa de un fluido polimérico base agua de mar como fase continua empleada para la perforación de pozos petroleros, que además sea una composición libre de sólidos y permita reemplazar fluidos que emplean fases continuas altamente contaminantes. Y todas aquellas cualidades y objetivos que se harán aparentes al realizar una descripción general y detallada de la presente invención apoyados en las modalidades ilustradas. Still another object of the invention is to make available said novel composition of a polymeric fluid based on seawater as a continuous phase used for drilling oil wells, which is also a solids-free composition and allows to replace fluids that employ highly polluting continuous phases. And all those qualities and objectives that will become apparent when making a general and detailed description of the present invention supported by the illustrated modalities.
DESCRIPCIÓN DE LA INVENCIÓN DESCRIPTION OF THE INVENTION
La composición de fluido polimérico base agua de mar como fase continua para la perforación de pozos petroleros en formaciones productoras, depletadas, fracturadas, con pérdida de circulación, pozos verticales y dirigidos con altos ángulos, pozos con problemas de inestabilidad del agujero y arcillas hidratables, así como donde existe la dificultad de limpieza del agujero. El fluido es un fluido libre de sólidos con buena capacidad de acarreo; ofrece óptima inhibición de las lutitas, permitiendo el mejoramiento de las condiciones operativas e incidiendo en la reducción de costos, especialmente por el alto consumo de diesel en el fluido baja densidad.
La formulación usa productos biodegradables pensando en el cuidado del medio ambiente. Dicha composición comprende inhibidores químicos orgánicos y sales para controlar el hinchamiento de arcillas usando moléculas orgánicas inhibidoras en los fluidos de la superficie de la arcilla, donde compiten con las moléculas de agua por los sitios reactivos de las arcillas y por lo mismo sirven para reducir el hinchamiento de la arcilla. The composition of polymeric fluid based on seawater as a continuous phase for the drilling of oil wells in producing formations, depleted, fractured, with loss of circulation, vertical wells and directed at high angles, wells with problems of instability of the hole and hydratable clays, as well as where there is the difficulty of cleaning the hole. The fluid is a fluid free of solids with good carrying capacity; offers optimal inhibition of shales, allowing the improvement of operating conditions and influencing cost reduction, especially due to the high consumption of diesel in the low density fluid. The formulation uses biodegradable products with environmental care in mind. Said composition comprises organic chemical inhibitors and salts to control the swelling of clays using organic inhibitor molecules in the fluids of the clay surface, where they compete with the water molecules for the reactive sites of the clays and therefore serve to reduce the swelling of the clay
La composición comprende agua de mar como fase continua; al menos un viscosificante, preferiblemente Goma Xantana de alta pureza que permite obtener un excelente acarreo y suspensión en el fluido mejorando la limpieza; al menos un reductor de filtrado que consiste preferiblemente en una celulosa polianiónica del grado regular de alta pureza que además ayuda a la inhibición; al menos un reductor de filtrado que consiste preferiblemente en un derivado de complejos poliéteres y que modifican la reología; al menos un inhibidor químico de lutitas a base de poliglicoles para evitar la hidratación de las arcillas diseñado para trabajar con salinidades elevadas por su punto de niebla relativamente alto y por mantener su capacidad inhibitoria; sal de cloruro de potasio como inhibidor de arcillas; al menos un elementos alcalinizante, controlador de pH y precipitante de magnesio, preferentemente sosa caustica; al menos un secuestrante de calcio, preferiblemente carbonato de
sodio (soda ASH) para precipitar calcio del agua de mar y para que los polímeros reaccionen y optimicen su rendimiento. The composition comprises seawater as a continuous phase; at least one viscosifier, preferably high purity Xantana Gum that allows to obtain an excellent carry and suspension in the fluid improving the cleaning; at least one filtrate reducer preferably consisting of a regular grade high purity polyanionic cellulose which further aids inhibition; at least one filtrate reducer which preferably consists of a derivative of complex polyethers and that modify the rheology; at least one chemical inhibitor of polyglycol-based shales to prevent the hydration of clays designed to work with high salinities due to their relatively high fog point and to maintain their inhibitory capacity; potassium chloride salt as a clay inhibitor; at least one alkalizing element, pH controller and magnesium precipitate, preferably caustic soda; at least one calcium sequestrant, preferably carbonate of sodium (ASH soda) to precipitate calcium from seawater and for polymers to react and optimize their performance.
La composición está basada en determinar por medio de un viscosímetro rotacional, las propiedades reológicas y tixotrópicas a un fluido bajo condiciones dadas, que deben mantenerse en un rango adecuado, para optimizar la limpieza del pozo que se está perforando. La estabilidad, se refiere a tener una excelente inhibición de la formación utilizando inhibidores a base de glicoles; las formaciones que se inhiben son las arcillas y lutitas. The composition is based on determining, by means of a rotational viscometer, the rheological and thixotropic properties of a fluid under given conditions, which must be maintained in a suitable range, to optimize the cleanliness of the well being drilled. Stability refers to having an excellent formation inhibition using glycol based inhibitors; the formations that are inhibited are clays and shales.
Dicha composición comprende cuantitativamente los siguientes valores para 1 m3 de fluido: agua de mar en una cantidad de 962.5 lt/m3; soda ASH en una cantidad de 1.5 Kg/m3;; goma xántica de alta calidad en una cantidad de 9.0 lt/m3, Celulosa polianiónica grado regular en una cantidad de 4.0 Kg/m3; polímero derivado de complejos de éteres en una cantidad de 6.0 Kg/m3, ; poliglicoles en una cantidad de 12.0 lt/m3 y cloruro de potasio en una cantidad de 18.0 Kg/m3., sosa caustica en una cantidad de 2.0 Kg/m3. Said composition quantitatively comprises the following values for 1 m 3 of fluid: seawater in an amount of 962.5 l / m 3 ; ASH soda in an amount of 1.5 Kg / m 3 ;; High quality xanthic gum in an amount of 9.0 lt / m 3 , regular grade polyanionic cellulose in an amount of 4.0 Kg / m 3 ; polymer derived from ether complexes in an amount of 6.0 Kg / m 3 ; polyglycols in an amount of 12.0 lt / m 3 and potassium chloride in an amount of 18.0 Kg / m 3. , caustic soda in an amount of 2.0 Kg / m 3 .
La densidad del fluido puede manejarse en valores de 1.02 gr/cc a 1.40 gr/cc, densificándose el sistema con carbonato de calcio y/o Barita. The density of the fluid can be managed in values of 1.02 gr / cc to 1.40 gr / cc, the system being densified with calcium carbonate and / or Barite.
La composición del fluido polimérico está diseñada para perforar
zonas productoras, depletadas, fracturadas, con pérdidas de circulación; pozos verticales, dirigidos con altos ángulos y horizontales; en pozos con problemas de inestabilidad del agujero y arcillas altamente hidratables, así mismo donde existe la dificultad de limpieza del agujero. The polymeric fluid composition is designed to drill producing areas, depleted, fractured, with lost circulation; vertical wells, directed with high angles and horizontal; in wells with problems of instability of the hole and clays highly hydratable, also where there is the difficulty of cleaning the hole.
De esta forma la composición del fluido ofrece ventajas medio ambientales, minimizando los costos y daños por tratarse de fluidos limpios. In this way the composition of the fluid offers environmental advantages, minimizing the costs and damages as they are clean fluids.
Las ventajas que se obtuvieron dando un mejor rendimiento fueron : The advantages that were obtained giving a better performance were:
perforar zonas productoras, depletadas, fracturadas, perforar pozos con altos ángulos. drill producing, depleted, fractured areas, drill wells with high angles.
· perforar formaciones hidratables y con arcillas dispersables. · Drill hydratable formations with dispersible clays.
mejorar la limpieza de los agujeros dirigidos y con alto ángulo. improve the cleanliness of the directed and high angle holes.
perforar pozos con problemas de inestabilidad. drill wells with instability problems.
· perforar pozos con pérdidas de circulación, · Drill wells with lost circulation,
se puede subir la densidad. - es un fluido libre de sólidos. You can increase the density. - It is a fluid free of solids.
El invento ha sido descrito suficientemente como para que una persona con conocimientos medios en la materia pueda reproducir y obtener los resultados que mencionamos en la presente invención. Sin embargo, cualquier persona hábil en el
campo de la técnica que compete el presente invento puede ser capaz de hacer modificaciones no descritas en la presente solicitud, sin embargo, si para la aplicación de estas modificaciones en una estructura determinada o en el proceso de manufactura del mismo, se requiere de la materia reclamada en las siguientes reivindicaciones, dichas estructuras deberán ser comprendidas dentro del alcance de la invención.
The invention has been described sufficiently that a person with average knowledge in the field can reproduce and obtain the results mentioned in the present invention. However, any skilled person in the The field of the technique that is the subject of the present invention may be capable of making modifications not described in the present application, however, if for the application of these modifications in a given structure or in the manufacturing process thereof, the subject is required claimed in the following claims, said structures should be included within the scope of the invention.
Claims
1. - Composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, caracterizada por comprender por cada metro cúbico de fluido: agua de mar como fase continua en una cantidad de 962.5 11 / m 3 ; soda ASH en una cantidad de 1.5 Kg/m3 como secuestrante de calcio; sosa caustica en una cantidad de 2.0 Kg/m3 como elemento alcalinizante, controlador de pH y precipitador de magnesio; celulosa polianiónica grado regular en una cantidad de 4.0 Kg como reductor de filtrado; derivados de complejos poliéteres como reductor de filtrado y modificador reológico en una cantidad de 6 Kg/m3; goma xántica de alta calidad en una cantidad de 9.0 11/ m 3 como agente viscosificante para obtener propiedades reologicas que permiten tener un excelente acarreo y suspensión en el fluido mejorando la limpieza; poliglicoles en una cantidad de 8.0 Kg como inhibidor de I u ti ta s y cloruro de potasio en una cantidad de 10.0 Kg como inhibidor de arcillas. 1. - Composition of polymeric fluid based on seawater for the drilling of oil wells, characterized by comprising per cubic meter of fluid: seawater as a continuous phase in an amount of 962.5 11 / m 3; ASH soda in an amount of 1.5 Kg / m3 as calcium sequestrant; caustic soda in an amount of 2.0 Kg / m3 as alkalizing element, pH controller and magnesium precipitator; regular grade polyanionic cellulose in an amount of 4.0 kg as filtrate reducer; derivatives of polyether complexes as filtrate reducer and rheological modifier in an amount of 6 Kg / m3; High quality xanthic gum in an amount of 9.0 11 / m 3 as a viscosifying agent to obtain rheological properties that allow excellent hauling and suspension in the fluid, improving cleaning; polyglycols in an amount of 8.0 Kg as an inhibitor of I u t ta s and potassium chloride in an amount of 10.0 Kg as an inhibitor of clays.
2. - La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con la reivindicación 1, caracterizada porque presenta una densidad que va de 1.02 gr/cc a 1.40 gr/cc.
2. - The seawater based polymeric fluid composition for drilling oil wells, according to claim 1, characterized in that it has a density ranging from 1.02 gr / cc to 1.40 gr / cc.
3. - La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con la reivindicación 1, caracterizada porque dicho alcalinizante y controlador de pH, consiste preferiblemente en sosa caustica; que es un agente precipitante del magnesio que contiene el agua de mar. 3. - The composition of polymeric fluid based on seawater for the drilling of oil wells, according to claim 1, characterized in that said alkalizing and pH controller preferably consists of caustic soda; which is a precipitating agent of magnesium that contains seawater.
4. - La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con la reivindicación 1, caracterizada porque dicho secuestrante de calcio es carbonato de sodio (soda ASH). 4. - The composition of polymeric fluid based on seawater for drilling oil wells, according to claim 1, characterized in that said calcium sequestrant is sodium carbonate (ASH soda).
5. - La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con la reivindicación 1, caracterizada porque dicho biopolimero consiste en goma Xantana de alta pureza, que tiene un alto rendimiento que mejoran las propiedades reológicas del sistema. 5. - The composition of seawater based polymeric fluid for drilling oil wells, according to claim 1, characterized in that said biopolymer consists of high purity Xantana rubber, which has a high yield that improves the rheological properties of the system .
6.- La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con la reivindicación 1, caracterizada porque dicho reductor de filtrado e inhibidor mecánico, es una celulosa polianiónica, de mayor grado de sustitución a los existentes en el mercado. 6. The composition of seawater based polymeric fluid for drilling oil wells, according to claim 1, characterized in that said filtering reducer and mechanical inhibitor is a polyanionic cellulose, of greater degree of substitution to those existing in the market.
7.- La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con la
rei indicación 1, caracterizada porque dicha sal inhibitoria consiste en cloruro de potasio, que permite inhibir las lutitas hidratables. 7.- The composition of polymeric fluid based on seawater for the drilling of oil wells, in accordance with the rei indication 1, characterized in that said inhibitory salt consists of potassium chloride, which makes it possible to inhibit hydrated shales.
8.- La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con la reivindicación 1, caracterizada porque comprende una densidad de entre 1.02 a 1.03 g/cm3, pero el fluido puede ser densificado a 1.46 gr/cc, con carbonato de calcio y/o barita, cuando se requiera. 8. The composition of polymeric fluid based on seawater for drilling oil wells, according to claim 1, characterized in that it comprises a density of between 1.02 to 1.03 g / cm 3 , but the fluid can be densified to 1.46 gr / cc, with calcium carbonate and / or barite, when required.
9. - La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con la reivindicación 1 , caracterizada porque el filtrado API se debe mantener entre 4 a 7 cm3/30 min. 9. - The fluid composition polymer base seawater for drilling oil wells, according to claim 1, wherein the API filtrate should be maintained between 4 to 7 cm 3/30 min.
10. - La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con la reivindicación 1, caracterizada porque el pH se debe mantener entre 9.2 a 9.5 mediante la adición de sosa cáustica. 10. - The seawater based polymeric fluid composition for drilling oil wells, according to claim 1, characterized in that the pH must be maintained between 9.2 to 9.5 by the addition of caustic soda.
11. - La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con la reivindicación anteriores, caracterizada porque el sistema soporta un MBT entre 0 a 10 kg/m3 de arcilla.
11. - The composition of polymeric fluid based on seawater for drilling oil wells, according to the preceding claim, characterized in that the system supports an MBT between 0 to 10 kg / m 3 of clay.
12.- La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con la reivindicaciones anteriores, caracterizada por comprender el orden de agregado en los siguientes pasos lo que permite optimizar las propiedades del sistema: a) Agregar en una presa del equipo, una cantidad calculada de agua de mar de acuerdo a la formulación proporcionada; b)Agregar Soda ASH con la concentración calculada directamente en la presa; c)Homogenizar la suspensión; d) Adicionar la cantidad calculada de Goma Xantana como elemento de control de reologia; e)Adicionar polímero reductor de filtrado de complejos poliéteres; f)Agregar la Celulosa polianiónica como elemento de control de filtrado en la concentración indicada; g) Agregar la cantidad pre calculada del inhibidor de arcilla; h) Agregar a la presa, la concentración calculada de Cloruro de potasio i) Agregar la concentración calculada de sosa caustica; j) Agitar el fluido de manera tal que adquiera las propiedades fisicoquímicas esperadas. 12. The composition of polymeric fluid based on seawater for the drilling of oil wells, according to the preceding claims, characterized by understanding the order of aggregate in the following steps which allows optimizing the properties of the system: a) Add in a dam of the equipment, a calculated amount of seawater according to the formulation provided; b) Add ASH Soda with the concentration calculated directly on the dam; c) Homogenize the suspension; d) Add the calculated amount of Xantana Gum as a rheology control element; e) Add polymer reducing filtration of complex polyethers; f) Add polyanionic cellulose as a filtering control element at the indicated concentration; g) Add the pre-calculated amount of the clay inhibitor; h) Add to the dam, the calculated concentration of Potassium Chloride i) Add the calculated concentration of caustic soda; j) Stir the fluid in such a way that it acquires the expected physicochemical properties.
13.- La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con las reivindicaciones anteriores, caracterizada porque se efectúan ajustes de los componentes y propiedades fisicoquímicas con la adición y balance de los componentes, así como con la utilización de los equipos de control de sólidos, desgasificadores, cuando dicha composición de fluido se contamina con gas, anhidrita, cemento, ácido sulfhídrico, aguas
de formación, carbonatos y CO2 o con otros elementos. 13.- The composition of seawater based polymeric fluid for drilling oil wells, according to the preceding claims, characterized in that adjustments of the components and physicochemical properties are made with the addition and balance of the components, as well as with the use of solid control equipment, degassing, when said fluid composition is contaminated with gas, anhydrite, cement, hydrogen sulfide, water of formation, carbonates and CO2 or with other elements.
14.- La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con las reivindicaciones anteriores, caracterizada porque la reología que tiene el sistema permite mantener una protección de la dispersión de la formación al generar poca erosión de la formación . 14.- The composition of seawater based polymeric fluid for the drilling of oil wells, according to the previous claims, characterized in that the rheology that the system has allows to maintain a protection of the dispersion of the formation by generating little erosion of the training
15.- La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con las reivindicaciones anteriores, caracterizada porque el bajo contenido de sólidos del sistema permite tener un mejor avance en la perforación. 15.- The composition of polymeric fluid based on seawater for the drilling of oil wells, according to the previous claims, characterized in that the low solids content of the system allows for better drilling progress.
16.- La composición de fluido polimérico base agua de mar para la perforación de pozos petroleros, de acuerdo con las reivindicaciones anteriores, caracterizada, porque los valores de las lecturas de seis y de tres son óptimos para limpiar y acarrear los recortes perforados, permitiendo mantener geles que originan una excelente suspensión.
16.- The composition of polymeric fluid based on seawater for drilling oil wells, according to the preceding claims, characterized in that the values of the readings of six and three are optimal for cleaning and hauling the perforated cuttings, allowing keep gels that cause an excellent suspension.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MX2010007627A MX2010007627A (en) | 2010-07-12 | 2010-07-12 | Seawater-based polymeric-fluid composition for petroleum-well drilling. |
| MXMX/A/2010/007627 | 2010-07-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2012008819A2 true WO2012008819A2 (en) | 2012-01-19 |
| WO2012008819A3 WO2012008819A3 (en) | 2012-04-12 |
Family
ID=45469973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/MX2011/000087 WO2012008819A2 (en) | 2010-07-12 | 2011-07-12 | Seawater-based polymeric-fluid composition for petroleum-well drilling |
Country Status (2)
| Country | Link |
|---|---|
| MX (1) | MX2010007627A (en) |
| WO (1) | WO2012008819A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016039611A3 (en) * | 2014-09-08 | 2016-04-07 | Tecnología Integral En Fluidos De Perforación S.A. De C.V. | High-performance aqueous-phase polymer fluid for drilling wellbores in low-gradient formations |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5361842A (en) * | 1993-05-27 | 1994-11-08 | Shell Oil Company | Drilling and cementing with blast furnace slag/silicate fluid |
| US20030148892A1 (en) * | 2001-11-08 | 2003-08-07 | Huntsman Petrochemical Corporation | Drilling fluids |
| US20050199428A1 (en) * | 2004-03-09 | 2005-09-15 | Jeanette Dixon | Drilling fluids |
| US20060019834A1 (en) * | 2004-07-22 | 2006-01-26 | Mohand Melbouci | Water-based drilling fluids |
-
2010
- 2010-07-12 MX MX2010007627A patent/MX2010007627A/en not_active Application Discontinuation
-
2011
- 2011-07-12 WO PCT/MX2011/000087 patent/WO2012008819A2/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5361842A (en) * | 1993-05-27 | 1994-11-08 | Shell Oil Company | Drilling and cementing with blast furnace slag/silicate fluid |
| US20030148892A1 (en) * | 2001-11-08 | 2003-08-07 | Huntsman Petrochemical Corporation | Drilling fluids |
| US20050199428A1 (en) * | 2004-03-09 | 2005-09-15 | Jeanette Dixon | Drilling fluids |
| US20060019834A1 (en) * | 2004-07-22 | 2006-01-26 | Mohand Melbouci | Water-based drilling fluids |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016039611A3 (en) * | 2014-09-08 | 2016-04-07 | Tecnología Integral En Fluidos De Perforación S.A. De C.V. | High-performance aqueous-phase polymer fluid for drilling wellbores in low-gradient formations |
| US10266743B2 (en) | 2014-09-08 | 2019-04-23 | Tecnología Integral En Fluidos De Perforación S.A. De C.V. | High-performance aqueous-phase polymer fluid for drilling well bores in low-gradient formations |
Also Published As
| Publication number | Publication date |
|---|---|
| MX2010007627A (en) | 2012-01-17 |
| WO2012008819A3 (en) | 2012-04-12 |
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