US20060249286A1 - Method and device for producing wave action on a production stratum - Google Patents

Method and device for producing wave action on a production stratum Download PDF

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Publication number
US20060249286A1
US20060249286A1 US10/513,238 US51323805A US2006249286A1 US 20060249286 A1 US20060249286 A1 US 20060249286A1 US 51323805 A US51323805 A US 51323805A US 2006249286 A1 US2006249286 A1 US 2006249286A1
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US
United States
Prior art keywords
well
plunger
chamber
fluid
tubing string
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US10/513,238
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English (en)
Inventor
Sergei Serdjukov
Vladimir Novikov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OBSCHESTVO S OGRANICHENNOI OTVETSTVENNOSTJU "ARSENTEKH"
Arsentekh OOO
Original Assignee
Arsentekh OOO
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Filing date
Publication date
Application filed by Arsentekh OOO filed Critical Arsentekh OOO
Assigned to OBSCHESTVO S OGRANICHENNOI OTVETSTVENNOSTJU "ARSENTEKH" reassignment OBSCHESTVO S OGRANICHENNOI OTVETSTVENNOSTJU "ARSENTEKH" ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NOVIKOV, VLADIMIR IVANOVICH, SERDJUKOV, SERGEI VLADIMIROVICH
Publication of US20060249286A1 publication Critical patent/US20060249286A1/en
Abandoned legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/02—Generating seismic energy
    • G01V1/133—Generating seismic energy using fluidic driving means, e.g. highly pressurised fluids; using implosion
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/003—Vibrating earth formations

Definitions

  • the proposed invention relates to mining engineering and more particularly to a method for producing wave action on a productive stratum and to a device for carrying such method into effect.
  • a method for producing wave action on a productive stratum comprising transmitting molecular-wave oscillations from an emitter of a hydraulic hammer installed at the well head along a flow string through its top level and along the column of fluid in the well and through the top level of the column to the productive stratum.
  • pressure in the well is increased by delivering fluid from a pump with a pressure accumulator coupled with the inlet thereof to the flow string at the well head, and hydraulic impacts are created in the fluid column of the well by closing periodically the pump inlet by the emitter of the hydraulic hammer during transmitting the molecular-wave oscillations therefrom to the flow string and to the fluid column in the well.
  • the efficiency of the known method is insufficiently high due to the fact that the load, while dropping, experiences a resistance of the well fluid, which reduces its velocity and, consequently, its kinetic energy. Besides, the load found in the well fluid generates a smaller force due to the volume of fluid displaced by the load (its effective weight diminishes).
  • this method is also characterized by a low efficiency because the hydraulic shock is produced on a layer of fluid which damps the shock pulse.
  • a device for increasing rock permeability in the place of final resting comprising a conical acoustic reflector connected to a generator of force waves at its end, communicated with a fluid wave guide.
  • ⁇ u , ⁇ u , F u are the same emitter parameters in the current sections of the emitter;
  • ⁇ L , ⁇ L , F L are the wave guide fluid density and the reduced section of the fluid wave guide along the emitter length, respectively, the acoustic reflector having a length not smaller than the wave length.
  • the known device has a low effectiveness because of the necessity to transmit shock waves to a well depth which may reach 4.5 km.
  • a device for producing wave action on a well bottom zone comprising a casing equipped with ports for disposing a hot mixture and a spark plug therein, a valve shutting the ports being mounted in the casing, the space thereunder being connected with a control unit.
  • the device further comprises a cylinder with a seating ring installed on the bottom end of the tubing string, a plunger connected to the pumping unit, installed in the cylinder so that the plunger exits from the cylinder at the top of the upstroke, a rod whose one end is connected to the pumping unit and whose other end is attached to the plunger, and also a supply device intended for mounting on the Christmas tree, and a container intended to be mounted on the day surface.
  • the main object of the invention is to provide a method for producing wave action on a productive stratum wherein a hydraulic shock would be produced on a surface exerting minimum damping action on the shock, whereby it would be possible to raise the effectiveness of the shock and correspondingly of the wave action on the productive stratum; as well as to provide a device for carrying out this method, which would be highly effective, would have a high reliability, and would not require highly qualified service personnel.
  • the posed problem is solved by that in a method for producing wave action on a productive stratum, which comprises performing vibro-seismic action on a bottom-hole zone by a hydraulic shock, according to the proposed technical solution, the hydraulic shock is produced by dropping a column of well fluid to the bottom of a chamber which is fixed to the lower part of a flow string and interacts with the well bottom. During dropping, the well fluid is accelerated along the length of the chamber.
  • the chamber may rest directly against the well bottom or against a liner secured in the well bottom.
  • the hydraulic shock produced against the bottom of the chamber is transmitted to the productive stratum, damping being substantially ruled out, so that it becomes possible to raise the effectiveness of action on the productive stratum and to increase the production of oil.
  • the device for producing wave action on a productive stratum which comprises a pumping unit, a tubing string with an expanded perforated lower part, a cylinder, a plunger arranged in the cylinder in such a manner that it can move axially and exit therefrom when it is in the top position thereof, a rod whose one end is connected to the plunger and whose other end is connected to the pumping unit, according to the proposed invention, the cylinder is made with solid walls and constitutes together with the plunger a chamber, the plunger being provided with one channel outgoing to its end surfaces, and with an inverted valve which enables the fluid to flow along the channel from the chamber to the perforated expanded part of the flow string.
  • Such an embodiment of the device makes it possible to carry the proposed method for producing wave action on a productive stratum into effect, i.e., to produce a shock pulse by raising a column of well fluid, accelerating it, and dropping thereof to the bottom of the chamber.
  • the inverted valve should be located in the channel of the plunger. This will preclude the fluid flow in the device from the space above the plunger into the chamber and provide the fluid flow from the chamber into the space above the plunger during the plunger downstroke.
  • Such structural embodiment of the device while ensuring single-direction travel of the fluid flow (from the chamber to the space above the plunger), simplifies the structure and, this being the main thing, makes it possible to use the weight of the well fluid column for pressing the membrane to the end face of the plunger, i.e., to enhance the reliability of the inverted valve operation.
  • FIG. 1 shows a device for producing wave action on a productive stratum, according to the invention, installed in a well, longitudinal section;
  • FIG. 2 shows the same as FIG. 1 , partially, with a plunger with two channels and a membrane inverted valve.
  • FIG. 1 shows a device for producing wave action on a productive stratum, according to the invention, installed in a well 1 filled with a well fluid 2 , secured at a required depth in a lower part 3 of a tubing string 4 .
  • the lower part 3 of the tubing string 4 is expanded and provided with perforation holes 5 .
  • Secured below the expanded part 3 of the tubing string 4 is a cylinder 6 inside which a plunger 7 is arranged reciprocatingly and secured by means of a rod 8 to a pumping unit (not shown in the drawings).
  • the cylinder 6 is made with solid walls, has a bottom 9 , and together with the plunger 7 makes up a chamber 10 .
  • the plunger 7 is arranged is such a way that it can exit from the cylinder 6 when it is in the top position thereof.
  • a through channel 11 is provided in the body of the plunger 7 in such a way that it can exit at the end surfaces thereof. and has an expansion 12 in the middle part, which makes up a seat 13 to which a ball 16 , which is the movable member of the inverted valve, is pressed by a conical spring 15 .
  • FIG. 2 shows a structure of the inverted valve in the form of a resilient membrane 17 secured in the central portion of the upper end face of the plunger 7 .
  • the plunger is provided with several through channels 11 ′ which communicate space 18 above the plunger and the space of the chamber 10 (the space below the plunger).
  • the membrane 17 overlaps entrance to the channels 11 ′ from the side of the space 18 above the plunger.
  • the external surface of the bottom 9 rests against a liner, which is a tube 19 cemented in the face of the well 1 .
  • the external surface of the bottom 9 of the chamber 10 may rest directly against the face of the well 1 (not shown in the drawings).
  • the method for producing wave action on a productive stratum consists in performing a vibro-seismic action on a well bottom zone by a hydraulic shock.
  • the hydraulic shock is produced by dropping a column of well fluid to the bottom of a chamber which is fixed in the lower part of a tubing string and interacts with the wall bottom.
  • the method according to the invention makes it possible to raise the effectiveness of wave action on a productive stratum due to the fact that the dropped fluid flies down with a large speed without experiencing resistance from the fluid layer with a pressure equal to the pressure of the well fluid at a corresponding depth. Besides, the shock of the dropped fluid acts on a metallic bottom, so that damping of the shock is practically ruled out.
  • An advantage of the proposed method is also in using a column of well fluid as the shock producing mass.
  • Cemented into the bottom of the well 1 is the tube 19 against which the cylinder 6 secured below the expanded part 3 of the tubing string 4 rests with its bottom 9 .
  • the plunger 7 is arranged in the cylinder 6 , the space 18 above the plunger being filled with the well fluid 2 .
  • the ball 16 of the inverse valve is pressed to the seat 13 , and thereby the channel 11 is overlapped, and the flow of the fluid 2 from the space 18 above the plunger to the space of the chamber 10 (the space under the plunger) is ruled out.
  • the weight of the column of the well fluid and the spring 15 determine the force with which the ball is pressed to the seat 13 of the plunger 7 .
  • tight sealing of the chamber is determined by the resilient properties of the membrane 17 which overlaps the channels 13 of the plunger 7 and by the weight of the column of the well fluid 2 , found above the plunger 7 .
  • a pumping unit lifts the plunger 7 from the cylinder 6 with the aid of the rod into the expanded part 3 of the tubing string 4 . Since the diameter of the plunger 7 is smaller than the diameter of the expanded part 3 of the tubing string 4 , a gap is formed between their side surfaces, into which the well fluid starts running from the space 18 above the plunger. Through the perforation holes 5 in the expanded part 3 of the tubing string 4 the well fluid 2 comes from the well 1 into the interior of the tubing string 4 . As a result, the well fluid occupies all the interior of the tubing string 4 .
  • the well fluid 2 starts to run down and, gaining speed, drops to the bottom 9 of the chamber 10 .
  • the stroke of the plunger 7 and, consequently, the length of the chamber 10 depends on the amplitude of swinging of the pumping unit.
  • the entire mass of the well fluid 2 located in the well 1 above the plunger 7 which is in its upper position is accelerated.
  • the length along which the entire mass of the well fluid is accelerated is determined by the height of the chamber 10 (of the cylinder 6 ), and at the end of the acceleration the column of the well fluid strikes against the bottom 9 of the chamber 10 .
  • the shock pulse thus generated is transmitted to the tube 19 (in the case when the device rests against the wall bottom, the shock pulse is transmitted directly to the wall bottom), and through said tube and the bottom of the well 1 the shock pulse acts on the productive stratum.
  • the tube 19 it is possible to transmit more effectively the shock pulse to the productive stratum which lies deeper than the bottom of the well 1 .
  • the surrounding rock being a damper, attenuates the shock pulse. Therefore the expedience of using a particular structural solution is determined by the production requirements. If it is necessary to transmit the shock pulse to a large depth, then it is expedient to use a liner—the tube 19 cemented into the bottom of the well 1 . If it is necessary to act with a shock pulse on the bottom zone of the well 1 , it is expedient to use a second variant, when the chamber 10 rests with its bottom 9 directly against the well bottom.
  • the well fluid 2 completely fills the chamber 10 .
  • the plunger 7 is lowered.
  • the plunger descends by gravity from the expanded part 3 of the tubing string 4 into the cylinder 6 .
  • the ball 16 under the action of fluid in the chamber 10 moves away from the seat 13 , compressing the spring 15 (if the latter is provided), and enters the expansion 13 of the channel 11 of the plunger 7 .
  • the device can operate without the spring 15 as well. In that case the ball 16 will be raised and lowered by the static pressure of the fluid in the chamber 10 (when the plunger 7 is lowered) and in the expanded part 3 of the tubing string 4 (when the plunger 7 is raised).
  • the spring 15 increases the reliability of the inverted valve operation.
  • the fluid 2 (because of its incompressibility) will flow through the channel 11 into the space 18 above the plunger, i.e., into the expanded part 3 of the tubing string 4 .
  • the plunger 7 reaches its lower position, its raising with the aid of the rod 8 is started. Raising of the plunger 7 is performed till the plunger proves to be in the expanded part 3 of the tubing string 4 .
  • the shock pulse is produced by the falling column of the well fluid in each cycle.
  • the frequency of the cycles depends on the rocking frequency of the pumping unit. Usually this frequency is up to 10-12 swingings per minute.
  • Any hoisting unit may be used instead of the pumping unit, for example, an electromagnet, a winch, etc., which can be located on the surface or in the well 1 .
  • the stroke of the plunger 7 can be reduced, and the frequency o shocks will be thus increased.
  • the column of the well fluid can correspond to or be smaller than the depth of the well. In the latter case the height of the well fluid can be limited artificially by installing a packer (not shown in the drawings, because this is a commonly known technique).
  • the well 1 for producing wave action on a productive stratum can be either drilled specially, or one of low-yield or abandoned wells can be used for this purpose.
  • the method and device for producing wave action on a productive stratum are intended for use in the oil-and-gas industry for raising the effectiveness of the oil and gas stock recovery.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
US10/513,238 2002-05-06 2003-04-18 Method and device for producing wave action on a production stratum Abandoned US20060249286A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
RU2002111631 2002-05-06
RU2002111631/03A RU2209945C1 (ru) 2002-05-06 2002-05-06 Способ воздействия на углеводородную залежь при ее разработке и устройство для его осуществления
PCT/RU2003/000177 WO2003093640A1 (fr) 2002-05-06 2003-04-18 Procede et dispositif d'action par ondes

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US10/513,238 Abandoned US20060249286A1 (en) 2002-05-06 2003-04-18 Method and device for producing wave action on a production stratum

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US (1) US20060249286A1 (ru)
AU (1) AU2003231432A1 (ru)
RU (1) RU2209945C1 (ru)
WO (1) WO2003093640A1 (ru)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008083471A1 (en) * 2007-01-08 2008-07-17 University Of Regina Methods and apparatus for enhanced oil recovery
US20110162853A1 (en) * 2010-01-04 2011-07-07 Sergey A Kostrov Method and apparatus for the dampening of shocks in the borehole of wells
US20130043022A1 (en) * 2011-08-15 2013-02-21 Ian Forster Downhole pulse-generating apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894724A (en) * 1956-09-07 1959-07-14 Thomas A Andrew Hydraulic vibratory jar
US3209834A (en) * 1962-06-07 1965-10-05 Shell Oil Co Shock inducing well tool
US4220176A (en) * 1978-04-10 1980-09-02 Russell Larry R Methods and apparatus for controlling fluid flow
US5586602A (en) * 1995-04-11 1996-12-24 Nefteotdacha, Ltd. Method and apparatus for shock wave stimulation of an oil-bearing formation
US5950726A (en) * 1996-08-06 1999-09-14 Atlas Tool Company Increased oil and gas production using elastic-wave stimulation
US6015010A (en) * 1997-09-10 2000-01-18 Applied Seismic Research Corporation Dual tubing pump for stimulation of oil-bearing formations
US6273690B1 (en) * 1999-06-25 2001-08-14 Harbison-Fischer Manufacturing Company Downhole pump with bypass around plunger

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4512402A (en) * 1983-05-11 1985-04-23 Sona-Tool Development Ltd. Casing tuned downhole tool
SU1710709A1 (ru) * 1989-12-07 1992-02-07 Всесоюзный нефтегазовый научно-исследовательский институт Способ волнового воздействи на залежь и устройство дл его осуществлени
RU2140533C1 (ru) * 1997-12-25 1999-10-27 Открытое акционерное общество Нефтяная компания "Приобье" Установка для импульсного воздействия на залежь

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894724A (en) * 1956-09-07 1959-07-14 Thomas A Andrew Hydraulic vibratory jar
US3209834A (en) * 1962-06-07 1965-10-05 Shell Oil Co Shock inducing well tool
US4220176A (en) * 1978-04-10 1980-09-02 Russell Larry R Methods and apparatus for controlling fluid flow
US5586602A (en) * 1995-04-11 1996-12-24 Nefteotdacha, Ltd. Method and apparatus for shock wave stimulation of an oil-bearing formation
US5950726A (en) * 1996-08-06 1999-09-14 Atlas Tool Company Increased oil and gas production using elastic-wave stimulation
US6015010A (en) * 1997-09-10 2000-01-18 Applied Seismic Research Corporation Dual tubing pump for stimulation of oil-bearing formations
US6273690B1 (en) * 1999-06-25 2001-08-14 Harbison-Fischer Manufacturing Company Downhole pump with bypass around plunger

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008083471A1 (en) * 2007-01-08 2008-07-17 University Of Regina Methods and apparatus for enhanced oil recovery
US20100300681A1 (en) * 2007-01-08 2010-12-02 University Of Regina Methods and apparatus for enhanced oil recovery
US8534352B2 (en) 2007-01-08 2013-09-17 University Of Regina Methods and apparatus for enhanced oil recovery
US20110162853A1 (en) * 2010-01-04 2011-07-07 Sergey A Kostrov Method and apparatus for the dampening of shocks in the borehole of wells
US7980301B1 (en) * 2010-01-04 2011-07-19 Sergey Kostrov Method and apparatus for the dampening of shocks in the borehole of wells
US20130043022A1 (en) * 2011-08-15 2013-02-21 Ian Forster Downhole pulse-generating apparatus
US9109442B2 (en) * 2011-08-15 2015-08-18 Nov Downhole Eurasia Limited Downhole pulse-generating apparatus

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Publication number Publication date
RU2209945C1 (ru) 2003-08-10
AU2003231432A1 (en) 2003-11-17
WO2003093640A1 (fr) 2003-11-13

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AS Assignment

Owner name: OBSCHESTVO S OGRANICHENNOI OTVETSTVENNOSTJU "ARSEN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SERDJUKOV, SERGEI VLADIMIROVICH;NOVIKOV, VLADIMIR IVANOVICH;REEL/FRAME:016552/0841

Effective date: 20041208

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION