WO2007081240A1 - Procédé et installation de traitement de fond de puits dans des formations pétrolifères et gazifères - Google Patents

Procédé et installation de traitement de fond de puits dans des formations pétrolifères et gazifères Download PDF

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Publication number
WO2007081240A1
WO2007081240A1 PCT/RU2006/000669 RU2006000669W WO2007081240A1 WO 2007081240 A1 WO2007081240 A1 WO 2007081240A1 RU 2006000669 W RU2006000669 W RU 2006000669W WO 2007081240 A1 WO2007081240 A1 WO 2007081240A1
Authority
WO
WIPO (PCT)
Prior art keywords
installation according
compressed gas
gas agent
nozzle
head
Prior art date
Application number
PCT/RU2006/000669
Other languages
English (en)
Russian (ru)
Inventor
Oleg Borisovitch Kalinin
Victor Sergeevitch Zamahaev
Rustam Mahsutovitch Asfin
Original Assignee
Oleg Borisovitch Kalinin
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from RU2006100171/03A external-priority patent/RU2318984C2/ru
Priority claimed from RU2006124095/03A external-priority patent/RU2006124095A/ru
Application filed by Oleg Borisovitch Kalinin filed Critical Oleg Borisovitch Kalinin
Priority to EA200801489A priority Critical patent/EA013154B1/ru
Priority to US12/160,626 priority patent/US20090200017A1/en
Priority to CA002636766A priority patent/CA2636766A1/fr
Publication of WO2007081240A1 publication Critical patent/WO2007081240A1/fr

Links

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
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • 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
    • E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • 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
    • 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
    • E21B43/18—Repressuring or vacuum methods
    • 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
    • E21B43/2605—Methods for stimulating production by forming crevices or fractures using gas or liquefied gas

Definitions

  • the invention relates to the field of the oil industry, namely, to clean bottom-hole zones and filters of oil and gas producing and water injection wells.
  • a known installation for processing bottom-hole zones of oil and gas producing and water injection wells containing a line equipped with shutoff valves for supplying fluid to the well, a pneumatic generator of compression-rarefaction waves in the well fluid, a compressed gas agent supply line, a compressed gas agent discharge system, a piston group with shutoff elements, and in the side wall there are windows for discharging the compressed gas agent from the head cavity (SUN ° 1373024, class E 21 B 43/25, 199).
  • the description of a well-known document describes a method for processing bottom-hole zones of oil and gas bearing formations, in which fluid is pumped into the well, then an impact is applied, creating compression-rarefaction waves in the well fluid.
  • the technical result that can be achieved by using the proposed method and installation for its implementation is to ensure high-quality cleaning of the bottom-hole zone of the formation and high-quality impact on the formation.
  • An additional technical result that can be achieved using the proposed installation is to increase the environmental friendliness of the installation.
  • a method for processing bottom-hole zones of oil and gas bearing formations in which fluid is pumped into the well, then using a pneumatic generator, the compressed gas agent is instantly and unhindered through the supply lines to the mirror of the borehole fluid with the formation of a large excess pressure of the compressed gas agent on the surface well fluid (gas cushion).
  • a compressed gas agent to the fluid, compression waves with a steep front are generated, which transfer energy with a high flux density along the wellbore with insignificant attenuation and ensure that the molecules of the fluid saturating the rock - reservoir are transferred into a state of strong interaction, which results in a high proppant pressure.
  • This pressure is many times higher than the mountain pressure, providing the disclosure of the filtration channels of the reservoir. Then produce an instant discharge of the compressed gas agent, creating a rarefaction wave with a steep front, which forms a cavitation cavity in the fluid and provides an ejection of clogging particles from the formation into the well.
  • a steep front of compression-discharge waves can be achieved using various methods, in particular, using shut-off elements made in the form of quick-acting shut-off valves and installed on the compressed gas agent supply lines and the compressed gas agent discharge system and releasing the borehole from the structural elements of the pneumatic generator and t .p ..
  • shut-off elements made in the form of quick-acting shut-off valves and installed on the compressed gas agent supply lines and the compressed gas agent discharge system and releasing the borehole from the structural elements of the pneumatic generator and t .p ..
  • the claimed method there is proposed an installation for processing bottom-hole zones of oil-and-gas bearing strata containing a line for supplying fluid to the well equipped with shutoff valves, a pneumatic generator, compressed gas agent supply lines equipped with shutoff valves and a compressed gas agent discharge system with shutoff elements, where the pneumatic generator includes a head with a full bore (hollow head) containing an exhaust hole, with an end wall, installed open end in the well, Yes, compressed gas enters the compressed gas agent supply lines, and the shutoff valves of the gas agent supply line are made in the form of quick-acting shutoff valves.
  • the pneumatic generator includes a head with a full bore (hollow head) containing an exhaust hole, with an end wall, installed open end in the well, Yes, compressed gas enters the compressed gas agent supply lines, and the shutoff valves of the gas agent supply line are made in the form of quick-acting shutoff valves.
  • an installation for processing bottom-hole zones of oil and gas bearing formations comprising a line for supplying fluid to the well provided with shutoff valves, a pneumatic generator, a compressed gas agent supply line with shutoff valves and a compressed gas agent discharge system with shutoff elements
  • the pneumatic generator includes a full-bore head (hollow head) containing an exhaust hole, with an end wall mounted open end to a well no where supply lines for compressed gas agent receives compressed gas moreover hollow head part has at at least one accelerating nozzle for a compressed gas agent built into the exhaust outlet, and the shutoff valves of the gas agent supply line are made in the form of quick shutoff valves.
  • water, cenoman, kill fluids in particular aqueous solutions of sulfates and carbonates, various hydrocarbon fluids of natural and synthetic origin.
  • Chemically inert gases preferably industrial nitrogen, CO 2 , are used as the compressed gas agent.
  • bottom-hole zones of oil and gas bearing formations can take place in one compression-discharge cycle or in two or more compression-discharge cycles, depending on the type of oil-and-gas bearing formation and the state of its bottom-hole zone.
  • the condition of the bottom-hole zone of the formation is determined using special geodetic control and measuring equipment, lowered into the formation through the cavity of the well.
  • an additional acoustic effect is applied to the well, in particular an ultrasonic effect.
  • the installation includes an expansion vessel, which has a cross-section greater than the cross-section of the exhaust opening and which is equipped with at least one outlet pipe to form, together with it and the exhaust opening, a system for discharging a compressed gas agent from the head cavity.
  • the compressed gas agent discharge system from the head cavity is provided with at least one accelerator nozzle.
  • the compressed gas agent discharge system is coaxially formed in the end wall of the head.
  • the installation includes at least one accelerator nozzle integrated in the exhaust opening coaxially with it.
  • Appropriate install at least one accelerator nozzle coaxially in the exhaust outlet with a gap relative to its cross section.
  • At least one accelerator nozzle coaxially on the end wall of the head above the exhaust hole, in particular with a gap along the axis of the hole.
  • accelerator nozzles In the case of using several accelerator nozzles, they can be installed in the exhaust outlet and above it. One nozzle can be installed in the exhaust outlet, and the other above it.
  • At least one accelerator nozzle is provided with perforated walls.
  • the accelerator nozzle has a passage section of the lower socket equal to the passage section of the exhaust hole and is made in the form of a truncated cone or in the form of a Laval nozzle.
  • the discharge system comprises a nozzle mounted coaxially on the end wall of the head, and an expansion tank is located on the upper end of the nozzle.
  • the shut-off elements of the discharge system are made in the form of quick-acting shut-off valves and are either integrated in the exhaust hole of the hollow head, or in the nozzle between the end wall of the head and the expansion tank or in the upper end of the nozzle, or in the accelerator nozzle, in particular in a narrow section of the Laval nozzle or in one of its bells.
  • the exhaust opening is commensurate with the bore of the end wall of the head.
  • At least one outlet pipe is made in the form of a branched system of at least two outlet pipelines, with the total passage section of all outlet pipelines not less than the passage section of the expansion vessel.
  • the discharge system is provided with a receiving container for the outlet pipe system, in particular, may be provided with receiving containers for each pipe. Moreover, the receiving containers can be sealed, and the discharge pipes are built into these containers.
  • at least one of the outlet pipelines is provided with a quick-disconnect connection and a high-pressure hydraulic unit installed to enable connection to this pipeline at the location of the quick-connect. Due to the modified design of the pneumatic generator and the release of the well cavity from its elements, as well as the implementation of the exhaust hole in the end wall of the head in the well fluid, compression-rarefaction waves with steep fronts are created.
  • a rarefaction wave with a steep front which replaces the compression wave, creates a cavitation cavity in the fluid and ensures the release of clogging particles from the formation into the well.
  • the effect is enhanced in the case of the presence of an additional expansion tank, which, due to the large flow area, creates a suction effect that helps to accelerate the discharge of the compressed gas agent, and also delays the cleaning elements in its cavity and prevents them from returning to the head cavity.
  • the volume of the expansion tank is preferably equal to or greater than the volume of the head to improve the conditions for unhindered discharge from the head.
  • the discharge of the compressed gas agent is carried out in a closed discharge line, which makes the installation environmentally friendly.
  • quick couplings such as a bayonet coupling, nipple type, etc.
  • outlet pipelines in case of emergency (equipment failure, oil and gas manifestations, etc.)
  • a quick-disconnect connection allows you to quickly eliminate the unauthorized flowing of the well by crushing the formation with the subsequent elimination of the malfunction, which also increases the environmental friendliness of the installation and its operational qualities.
  • the presence of a pipe under the expansion tank is determined by the ease of operation of the installation, as well as by increasing the distance from the exhaust opening for more efficient operation of the installation.
  • the location of the quick-acting stop valves in various elements of the discharge line is also determined based on operational and technological considerations.
  • the size of the exhaust outlet is also selected from technological considerations depending on the degree of permeability of the oil reservoir, its depth, etc.
  • Fig.1 schematically shows a General view of the installation
  • figure 2-schematic installation in section in the compression phase figure 3 - installation diagram in section in the rarefaction phase with an expansion chamber mounted on the pipe
  • figure 4 schematically shows a General view of the installation with the installed accelerator nozzle
  • the installation comprises a head 2 installed in the well 1 coaxially with it and having an end wall 3 with an exhaust hole 4 in the upper part.
  • a well fluid supply line 5 with shutoff valves 6 and a compressed gas agent supply line 7 with quick shutoff valves are integrated into the side wall of the head 2 8 from receiver 9.
  • the drawings show a variant of the location of the expansion vessel 10 coaxially to the tip by means of a pipe 11 with the formation of a line for discharge of the compressed gas agent through the outlet pipelines 12,13,14 in the receiving container EASURES 15, 16, 17.
  • the discharge line (at least one of them) is provided with a quick coupling 18 to prevent abnormal situations.
  • a quick-acting locking device 19 and accelerator nozzles 20 are integrated.
  • Fast shutoff valves 19 are shown in FIG. 1,2,3 in various variants of its location in the discharge system and in the exhaust outlet, which is determined in each case by technological considerations, depending on the type of well, depth of the formation (which can reach 4 km), design considerations, etc.
  • quick shut-off valves can be made in the form of an electrovalve, an electromagnetic valve, a pneumatic valve, etc. providing performance less than 1 second.
  • High-speed stop valves 19 can be integrated in the pipe between the end wall of the head and the expansion tank (Fig. 1) or in the exhaust hole of the hollow head (Fig. 2), or in the upper end of the pipe (Fig. 3). The width of the exhaust outlet and the location of the expansion vessel are determined from the same considerations.
  • the quick coupling 18 is made by any known connection, for example, in the form of a bayonet clip or the like. for a quick supply to the outlet pipe at the location of this connection of the high-pressure hydraulic unit 21 and supplying liquid to this pipe to crush an unauthorized discharge of oil into the well.
  • Cleaning is carried out in cycles with alternating compression and rarefaction waves in the well fluid in each cycle.
  • the treatment may require a number of cycles or completed in one cycle.
  • Each cycle is as follows. On line 5 with the open shutoff valve 6 through the head 2, the well 1 is filled with downhole fluid, after which the line 5 is closed by shutoff valves 6. Then, the shut-off valve 8 is opened (with the shut-off valve 19 closed) and a compressed gas agent (inert gas, inert in the oxidation reactions, mainly technical nitrogen) is fed into the cavity of the head 2. Since the shut-off valves 8 are quick-acting, the compressed gas agent instantly fills the cavity head 2 with the creation of pressure on the well fluid and the formation of a gas cushion above its mirror.
  • a compressed gas agent inert gas, inert in the oxidation reactions, mainly technical nitrogen
  • a shock wave of pressure with a steep front is created in the borehole fluid, characterized by a high energy flux density and low attenuation, which can propagate over long distances and create shock-force action on seals in the bottomhole zone of the oil reservoir.
  • the pressure in the head is kept constant until the arrival of a wave reflected from the bottom of the well.
  • the supply line of the compressed gas agent is shut off using high-speed shut-off valves 8 and the discharge line is opened by opening the fast-shut-off valves 19 (speed of less than 1 sec.).
  • the compressed gas agent from the gas pad through the exhaust outlet 4 and the expansion tank 10 is instantly ejected from the head 2 along the discharge line through the discharge pipes 12, 13, 14 into the receiving containers 15, 16, 17.
  • the quick disconnect connection 19 provides for quick disconnection of the pipeline into which it is integrated, supply of a high-pressure hydraulic unit to this zone for crushing oil into the well or ensuring equipment repair.
  • the cleaning result can be determined by instrumentation, for which, because of the free cavity of the tip, the instrumentation is lowered into the bottomhole zone (not shown in the drawings).
  • the design allows for high-quality cleaning with simultaneous control of the process.
  • the well fluid in the rarefaction phase is poured into a special storage (barn).

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)
  • Fluid-Pressure Circuits (AREA)
  • Cleaning In General (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

L'invention concerne un procédé de nettoyage des zones de fond de puits et des filtres de puits pétroliers et gaziers ou de puits à injection d'eau, qui consiste à injecter par pompage un liquide dans un puits et à amener instantanément et sans obstacles, au moyen d'un générateur pneumatique, via une conduite, un agent gazeux comprimé jusqu'au miroir de liquide de fond de puits de manière à former un coussin de gaz. Cela a pour effet de créer des ondes de compression présentant une atténuation insignifiante. On crée ainsi une pression de décompression élevée qui assure l'ouverture des canaux de filtrage de la formation; on décharge instantanément l'agent gazeux de manière à créer une onde de décompression qui provoque la formation d'une poche de cavitation et assure l'éjection des particules de colmatage de la formation vers l'intérieur du puits. Un générateur pneumatique comprend une tête creuse comportant un trou d'échappement avec une paroi d'extrémité montée par son extrémité ouverte sur le puits et servant à l'amenée de l'agent gazeux circulant dans les conduites d'amenée de gaz comprimé.
PCT/RU2006/000669 2006-01-12 2006-12-13 Procédé et installation de traitement de fond de puits dans des formations pétrolifères et gazifères WO2007081240A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EA200801489A EA013154B1 (ru) 2006-01-12 2006-12-13 Способ и установка для обработки призабойных зон нефтегазовых пластов
US12/160,626 US20090200017A1 (en) 2006-01-12 2006-12-13 Method and device for treating bottom-hole zones of oil-and-gas-bearing formations
CA002636766A CA2636766A1 (fr) 2006-01-12 2006-12-13 Procede et installation de traitement de fond de puits dans des formations petroliferes et gaziferes

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
RU2006100171/03A RU2318984C2 (ru) 2006-01-12 2006-01-12 Установка для обработки призабойных зон нефтегазоносных пластов (варианты)
RU2006100171 2006-01-12
RU2006124095 2006-07-06
RU2006124095/03A RU2006124095A (ru) 2006-07-06 2006-07-06 Способ для обработки призабойных зон нефтегазоносных пластов

Publications (1)

Publication Number Publication Date
WO2007081240A1 true WO2007081240A1 (fr) 2007-07-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2006/000669 WO2007081240A1 (fr) 2006-01-12 2006-12-13 Procédé et installation de traitement de fond de puits dans des formations pétrolifères et gazifères

Country Status (4)

Country Link
US (1) US20090200017A1 (fr)
CA (1) CA2636766A1 (fr)
EA (1) EA013154B1 (fr)
WO (1) WO2007081240A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7762326B2 (en) * 2006-11-08 2010-07-27 Geo Science Innovations, LLC System and method for reducing resistance to flow in liquid reservoir extraction
RU2456434C1 (ru) * 2010-12-30 2012-07-20 Сергей Иванович Мальцев Способ очистки перфорации призабойной зоны скважины
CN104121005B (zh) * 2014-07-15 2016-10-05 中北大学 高能气流驱动支撑剂导入井下压裂地层的设备

Citations (10)

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GB1175187A (en) * 1966-10-26 1969-12-23 Clarence William Brandon Energy Wave Fracturing of Formations.
SU1413241A1 (ru) * 1985-06-21 1988-07-30 Московский Геологоразведочный Институт Им.Серго Орджоникидзе Способ обработки пласта
SU1373024A1 (ru) * 1985-12-30 1991-09-23 Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Взрывных Методов В Геофизике Научно-Производственного Объединения "Союзпромгеофизика" Скважинный пневматический генератор
US5586602A (en) * 1995-04-11 1996-12-24 Nefteotdacha, Ltd. Method and apparatus for shock wave stimulation of an oil-bearing formation
US5836389A (en) * 1996-12-09 1998-11-17 Wave Energy Resources Apparatus and method for increasing production rates of immovable and unswept oil through the use of weak elastic waves
WO1999039846A1 (fr) * 1998-02-09 1999-08-12 Etrema Products, Inc. Generateur de pression fond-de-trou et procede d'utilisation
US6015010A (en) * 1997-09-10 2000-01-18 Applied Seismic Research Corporation Dual tubing pump for stimulation of oil-bearing formations
WO2000014378A1 (fr) * 1998-09-09 2000-03-16 Prowell Technologies Ltd. Dispositif d'impulsion de gaz et son procede d'utilisation
WO2001040623A1 (fr) * 1999-11-23 2001-06-07 Applied Seismic Research Corporation Procede et dispositif de simulation sismique de formations contenant des liquides
US20020153135A1 (en) * 2001-04-24 2002-10-24 Layne Christensen Company Method and apparatus for stimulating well production

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US4049056A (en) * 1972-05-04 1977-09-20 Physics International Company Oil and gas well stimulation
SU1253199A1 (ru) * 1984-09-27 1991-04-15 Всесоюзный научно-исследовательский и проектно-конструкторский институт по взрывным методам геофизической разведки Способ обработки призабойной зоны пласта
US6851473B2 (en) * 1997-03-24 2005-02-08 Pe-Tech Inc. Enhancement of flow rates through porous media
US20040200618A1 (en) * 2002-12-04 2004-10-14 Piekenbrock Eugene J. Method of sequestering carbon dioxide while producing natural gas
RU2217584C1 (ru) * 2002-12-23 2003-11-27 Закрытое акционерное общество "Рэнес" Способ обработки прискважинной зоны пласта

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1175187A (en) * 1966-10-26 1969-12-23 Clarence William Brandon Energy Wave Fracturing of Formations.
SU1413241A1 (ru) * 1985-06-21 1988-07-30 Московский Геологоразведочный Институт Им.Серго Орджоникидзе Способ обработки пласта
SU1373024A1 (ru) * 1985-12-30 1991-09-23 Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Взрывных Методов В Геофизике Научно-Производственного Объединения "Союзпромгеофизика" Скважинный пневматический генератор
US5586602A (en) * 1995-04-11 1996-12-24 Nefteotdacha, Ltd. Method and apparatus for shock wave stimulation of an oil-bearing formation
US5836389A (en) * 1996-12-09 1998-11-17 Wave Energy Resources Apparatus and method for increasing production rates of immovable and unswept oil through the use of weak elastic waves
US6015010A (en) * 1997-09-10 2000-01-18 Applied Seismic Research Corporation Dual tubing pump for stimulation of oil-bearing formations
WO1999039846A1 (fr) * 1998-02-09 1999-08-12 Etrema Products, Inc. Generateur de pression fond-de-trou et procede d'utilisation
WO2000014378A1 (fr) * 1998-09-09 2000-03-16 Prowell Technologies Ltd. Dispositif d'impulsion de gaz et son procede d'utilisation
WO2001040623A1 (fr) * 1999-11-23 2001-06-07 Applied Seismic Research Corporation Procede et dispositif de simulation sismique de formations contenant des liquides
US20020153135A1 (en) * 2001-04-24 2002-10-24 Layne Christensen Company Method and apparatus for stimulating well production

Also Published As

Publication number Publication date
US20090200017A1 (en) 2009-08-13
EA200801489A1 (ru) 2008-10-30
EA013154B1 (ru) 2010-02-26
CA2636766A1 (fr) 2007-07-19

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