WO2014138301A2 - Forage perpendiculaire de tubulure traversant - Google Patents

Forage perpendiculaire de tubulure traversant Download PDF

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Publication number
WO2014138301A2
WO2014138301A2 PCT/US2014/020906 US2014020906W WO2014138301A2 WO 2014138301 A2 WO2014138301 A2 WO 2014138301A2 US 2014020906 W US2014020906 W US 2014020906W WO 2014138301 A2 WO2014138301 A2 WO 2014138301A2
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WO
WIPO (PCT)
Prior art keywords
drilling
common
fluid
string
wellbore
Prior art date
Application number
PCT/US2014/020906
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English (en)
Other versions
WO2014138301A3 (fr
Inventor
David Randolph Smith
Karan Elaine EVES
Original Assignee
Boaz Energy Llc
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
Application filed by Boaz Energy Llc filed Critical Boaz Energy Llc
Publication of WO2014138301A2 publication Critical patent/WO2014138301A2/fr
Publication of WO2014138301A3 publication Critical patent/WO2014138301A3/fr

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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
    • E21B10/00—Drill bits
    • E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
    • E21B10/66—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe the cutting element movable through the drilling pipe and laterally shiftable
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
    • E21B21/085—Underbalanced techniques, i.e. where borehole fluid pressure is below formation pressure
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/062—Deflecting the direction of boreholes the tool shaft rotating inside a non-rotating guide travelling with the shaft

Definitions

  • the present disclosure is directed to methods and apparatus to extract fluids from subterranean reservoirs, particularly hydrocarbons and water reservoirs. More specifically, this disclosure provides methods and apparatuses to increase the recovery to surface of subterranean fluids, such as oil, water, and gas, from subterranean reservoirs using novel drilling methods, fluids and apparatus taught by my invention disclosure herein.
  • subterranean fluids such as oil, water, and gas
  • Another conventional method used in the oil and gas industry to enhance a reservoir's fluid conductivity is to drill a horizontal bore through the reservoir.
  • This method of drilling a wellbore horizontal in a fluid productive subterranean reservoir is combined with the hydraulic fracture of said horizontal wellbore to further enhance a reservoir's flow of fluid into wellbores.
  • fracture or "fracking methods” the direction of the crack and hence the direction of the enhanced reservoir permeability due to said hydraulic fracturing is limited to the predetermined direction driven by the in-situ rock stresses and earth' s overburden and tectonic stresses. What is needed are methods and apparatuses to more homogenously stimulate and enhance the reservoir's fluid flow that are not limited to directions controlled by in-situ stress nor require large amounts of fracture waters and chemicals to be pumped underground in both vertical or horizontal wellbores.
  • enhanced subterranean fluid extraction methods and apparatuses are disclosed that allow for the directionally controlled drilling of a plurality of boreholes from a principal or common wellbore. These methods and apparatuses may enhance the injection of fluids into subterranean reservoirs for the purposes of enhanced oil, water, brine, mineral, and gas recovery, both in primary fluid recovery phases of a well's life as well as the secondary recovery phase of a well's life, commonly known as Enhanced Oil Recovery (EOR).
  • EOR Enhanced Oil Recovery
  • methods and apparatuses for drilling said horizontal bores off perpendicular to the common wellbore are disclosed, such as using novel directional apparatus, using novel drilling fluids like cryogenic fluids and supercritical fluids, and using hydraulic assist methods to propel a small drilling string into the reservoir through a tubing or drill pipe string disposed in the wellbore.
  • a method provides for the placement of a plurality of bores substantially perpendicular to the common wellbore at a given depth or position in the said common wellbore.
  • multiple common boreholes may be placed in a subterranean reservoir wherein at least one of the common boreholes has a plurality of additional boreholes substantially horizontal to this common borehole.
  • a method may include the translation of a drilling tube through down hole tubulars, and down hole directional guidance devices using hydraulic drag forces, reverse thrusting hydraulic jets, and use of a system of fluids being pumped to propel the drilling string away from the common wellbore out into the reservoir using hydraulic drag forces.
  • a method of assisting the moving of a drilling string may include applying a dragging hydraulic force whereby the drilling tools and drilling string can be passed through curved hydraulic conduits of a through tubing guidance apparatus to direct the tight radius change of the new borehole constructed to be substantially perpendicular to the common borehole.
  • a method of drilling the substantially perpendicular bores to the common borehole may include using a method of underbalanced drilling wherein the drilling fluid used has a fluid hydrostatic pressure less than the reservoir pressure thereby allowing the production of the drilling fluid and the produced reservoir fluid simultaneously to the surface during the construction of the substantially perpendicular bores.
  • stimulating the substantially perpendicular borehole to the common wellbore may be performed by means of pumping stimulation fluids, such as acids, bases, explosives, cryogenic fluids, and/or by deploying shaped charges down the constructed substantially perpendicular boreholes and thereafter detonating the shaped charges, further enhancing the reservoir conductivity along the substantially perpendicular bores constructed off the common wellbore without using massive hydraulic fracture techniques.
  • stimulation fluids such as acids, bases, explosives, cryogenic fluids
  • the present application discloses a simple low cost method, small surface foot print system, and down hole apparatus to construct from a common wellbore a plurality of directional boreholes substantially perpendicular to said common wellbore.
  • the method includes drilling a common wellbore and thereafter deploying on or near the distal end of a drill pipe string or tubing string a directional guidance tool.
  • the drill or tubing string is then oriented in the required direction at the required depth by deploying, for example, a wire line gyro-directional tool, and by rotating the drill or tubing string at the surface.
  • the exit direction of the distal end guidance tool is selected and fixed per the wire line deployed gyro or other such directional sensing tool deployed on wire line or communicated to the surface via pressure pulses or other radio or electromagnetic means.
  • the wire line is pulled out of the drill or tubing string and a guidance tubing string is disposed down the drill or tubing string where said guidance string is landed on its distal end inside the distal guidance tool.
  • a drilling string or continuous conduit is then deployed and lowered from the surface through the guidance string and assisted through the guidance tool with the pumping of fluid through the guidance string, thereby hydraulically dragging the drill string through the guidance string and guidance tool and out into the reservoir.
  • the drilling string has a drilling fluid pumped from the surface that is used to carry drilling cuttings to surface. Further, the drilling fluids may have a hydrostatic fluid weight less than the reservoir pressure, thereby allowing the reservoir fluids and drilling cuttings and drilling fluid to flow to the surface.
  • the drilling string can be equipped with any of the commonly known drilling assemblies having a suite of devices such as drill bits, drilling motors, stabilizers, hydraulic and electric pulsed data communication tools (such as Logging While Drilling (LWD) tools), fluid jets, jars and other well-known drilling devices.
  • the drilling string comprises a super elastic alloy that further assists the drilling string in bending through the curved path of the down hole guidance tool and guidance string.
  • the drilling string can be equipped with a core device on the distal end that cores out, through a guidance device, a plug of well casing and cement prior to drilling the substantially perpendicular borehole into the subterranean reservoir.
  • This core is extracted to the surface and then the drilling string and assembly are deployed back out into the position where the core was extracted by means of keeping the distal guidance tool fixed during coring and construction of the substantially perpendicular borehole from the common borehole.
  • This procedure can be repeated multiple times at the same well position or depth by simply rotating the distal guidance tool and cutting another core followed by another substantially perpendicular bore to the common bore.
  • the drill or tubing string having the distal directional guidance tool can be moved to a new position and the above procedure is repeated, thereby constructing a plurality of substantially perpendicular bores to the common borehole at many positions along the length of the common borehole.
  • a further embodiment uses an explosive device deployed into the well and through the guidance device to create a passage through the previously-drilled common wellbore, casing, and cement.
  • a plurality of common wellbores are constructed in a reservoir strata, for example a large shale strata such as the Eagle Ford Shale of South Texas, having hundreds of feet of thickness wherein a horizontal wellbore is placed along the top 20 feet of the strata and boreholes are drilled from the common horizontal borehole radially like spokes from a wagon wheel hub, and said spoke positions are radially drilled all along the length of the horizontal common bore so that the horizontal common bore has many hundreds or more boreholes drilled radially around it at many hundreds of points along the horizontal length, and this is repeated in further horizontal wellbores placed deeper and under the previously mentioned horizontal borehole.
  • a horizontal wellbore is placed along the top 20 feet of the strata and boreholes are drilled from the common horizontal borehole radially like spokes from a wagon wheel hub, and said spoke positions are radially drilled all along the length of the horizontal common bore so that the horizontal common bore has many hundreds or more boreholes drilled radially around it at many hundreds of points along the
  • a method of increasing the recovery of fluid from a subterranean strata by constructing boreholes from a previously drilled common borehole comprises attaching to a well tubular conduit a directional guidance device having at least one internal conduit passage; deploying said well tubular conduit and said directional guidance device from a surface into said previously-drilled common borehole, wherein said well tubular conduit has a proximal end at the surface of the earth, and wherein said attached directional guidance device is attached near a distal end of said well tubular conduit; constructing a drilling string comprising a pseudoelastic alloy; attaching a drilling device to a distal end of said drilling string; translating said drilling string and said drilling device from said surface into said well tubular conduit through said directional guidance device; pumping a drilling fluid through said drilling string and said drilling device; drilling new boreholes from inside said previously-drilled common borehole into subterranean substances with said drilling device and said drilling string; flowing subterranean fluids into said common
  • said subterranean substance being drilled is a subterranean strata; said pseudoelastic alloy is NITINOL; said drilling string comprises at least one tube having a distal end attached to said drilling device and a proximal end attached on said surface to a fluid pumping system; drilling fluid being pumped is at least at surface a cryogenic fluid; said drilling fluid comprises a fluid that has a hydrostatic weight less than a reservoir pressure of said subterranean strata that is in said common wellbore; said drilling string is attached on a proximal end to a surface drilling or workover rig; said drilling string is attached on a proximal end to a coiled tubing injection device; said drilling string is passed through a blowout preventer device; said drilling string comprises a string of threaded and jointed pipe joints; said drilling string comprises a string of continuous tubing; said drilling string comprises a mixed string of jointed and continuous tubing; said drilling device comprises at least one jet nozzle; said translating
  • a directional guidance apparatus comprises a body comprising at least one proximal entry fluid passage starting at a proximal end, said fluid passage extending through the said body and forming a curvature radius that terminates at an exit port located on a longitudinal side of said body.
  • the apparatus further comprises pipe threads on said proximal end; at least one additional fluid port hydraulically connected to the fluid passage starting at the said proximal end of said entry fluid passage, said at least one additional fluid port terminating in a position different than said longitudinal exit port; and/or at least one drag tube to be disposed inside said directional guidance apparatus fluid passage.
  • a method of enhancing the injection of fluid from a surface into at least one subterranean strata by constructing boreholes from a previously drilled common borehole intersecting said subterranean strata comprises attaching to a well tubular conduit a directional guidance device having at least one internal conduit passage; deploying said well tubular conduit and said directional guidance device from said surface into said previously drilled common borehole, wherein said tubular conduit has a proximal end at said surface of the earth and said attached directional guidance device is attached near a distal end of said tubular conduit; constructing a drilling string comprising a pseudoelastic alloy; attaching a drilling device to a distal end of said drilling string; translating said drilling string from said surface into said well tubular conduit through said directional guidance device; drilling new boreholes into subterranean substances with said drilling device and drilling string; injecting surface fluids into said common wellbore and out into said constructed boreholes; and injecting said surface fluids into said subterrane
  • fluids from said at least one subterranean strata are produced to said surface from at least one additional wellbore not drilled from said common wellbore; said injected fluids comprise at least one gas; said injected fluids comprise supercritical fluids; said injected fluids comprise a liquid; said injected fluids comprise at least one cryogenic fluid; said injected fluids are injected into said common wellbore and into said reservoir through said new boreholes off of said common wellbore for a period of time and then fluids are returned from said new boreholes and said common wellbore to said surface; at least one hydraulic jarring device is attached to said drilling string; and/or at least a portion of said drilling string comprises a super elastic form of NITINOL.
  • FIGURE 1 illustrates three phases of well construction using the deployment of the down hole direction guidance apparatus according to one embodiment of the disclosure.
  • FIGURE 2 shows a drawing of a directional guidance device attached to a well tubular member that extends to the surface of the earth according to one embodiment of the disclosure.
  • surface may refer to locations at or above the surface of the earth.
  • super elastic alloy may refer to alloys that have an elastic (reversible) response to an applied stress, caused by a phase transformation between the austenitic and martensitic phases of a crystal. It is exhibited in shape-memory alloys. Super elasticity sometimes referred to as pseudoelasticity is from the reversible motion of domain boundaries during the phase transformation of an alloy, rather than just bond stretching or the introduction of defects in the crystal lattice (thus it is not true superelasticity but rather pseudoelasticity). Even if the domain boundaries do become pinned, they may be reversed through heating. Thus, a pseudoelastic material may return to its previous shape (hence, shape memory) after the removal of even relatively high applied strains. These alloys include but are not limited to a family of alloys known as Nitinol (an alloy comprising nickel and titanium and/or other elements).
  • Pseudoelasticity is an elastic (reversible) response to an applied stress, caused by a phase transformation between the austenitic and martensitic phases of a crystal. It is exhibited in shape-memory alloys. Pseudoelasticity is from the reversible motion of domain boundaries during the phase transformation, rather than just bond stretching or the introduction of defects in the crystal lattice (thus it is not true superelasticity but rather pseudoelasticity).
  • Superelastic alloys belong to the larger family of shape-memory alloys. When mechanically loaded, a superelastic alloy deforms reversibly to very high strains - up to 10% - by the creation of a stress-induced phase. When the load is removed, the new phase becomes unstable and the material regains its original shape. Unlike shape-memory alloys, no change in temperature is needed for the alloy to recover its initial shape.
  • drilling herein is intended to encompass the art of cutting holes in substances, and includes but is not limited to the use of high pressure fluid jets, abrasive cutting jets, cutting bits, milling bits, which can include rotational methods, as well as hammering methods.
  • the well casing may or may not be grouted into the common wellbore.
  • an additional step of this method includes first cutting or coring the casing.
  • the drilling rig can be substituted with a work over rig, which may be a smaller, more economical surface rig.
  • the work over rig can be used to deploy into the well a tubing or drill pipe string.
  • FIGURE 1 shows first phase 110.
  • direction guidance device 1 forms a passage for the deployment of stick pipe 10, or other devices such as cable, tubes, and solid rods 11 through said guidance device 1 as shown in second phase 120.
  • Third phase 130 depicts a guidance tube 3 disposed through the guidance apparatus device 1 body from the surface down a well tubing 2 shown on the first phase 110.
  • FIGURE 1 further shows a drilling string 4 inserted through guidance tube 3 in the third phase 130.
  • the drilling string 4 is depicted as a tube having a drilling fluid pumped from the surface down inside the drilling string 4 and out a drilling device 5 at the distal end of drilling string 4 shown in the third phase 130, where the depicted device 5 is a jetting device having reverse jets imposing a reactionary force on the drilling string 4 that pulls the drilling string 4 away from the directional guidance apparatus 1 and away from common wellbore 12.
  • the depicted device 5 is a jetting device having reverse jets imposing a reactionary force on the drilling string 4 that pulls the drilling string 4 away from the directional guidance apparatus 1 and away from common wellbore 12.
  • the third phase 130 further shows a fluid 6 being pumped down the annular space between the drilling string 4 outer diameter and the guidance tube 3 internal diameter, where said fluid pumping action imposes a drag force on the drilling string 4 which assists in the translation of the drilling string through the guidance tube 3 and the curved passage of the directional guidance apparatus and out into the reservoir 7.
  • Drilling strings presented herein may be of types commonly known in the art, such as, for example, threaded and jointed pipe joints, electric wire line, or continuous tubing.
  • the directional guidance device comprises a body with at least one proximal entry passage starting at a proximal end, said passage extending through the directional guidance device body said passage forms a curvature radius that terminates said passage through the directional guidance device body at an exit port located on a longitudinal side of said body representing an exit port substantially perpendicular to the proximal entry passage.
  • the directional guidance device has at least one additional port hydraulically connected to the main passage through the body wherein said additional port terminates in a position different than the longitudinal exit port. For example, said additional port in said passage through the directional guidance device terminates on the distal end of the directional guidance device.
  • FIGURE 1 and FIGURE 2 a sequential depiction of one embodiment is depicted wherein string 2 is shown in a tubular string of casing 14 deployed from the surface of the earth by way of, for example, a work over rig and through a blowout preventer on the top of the common wellbore at the surface.
  • said string 2 is lowered into the common wellbore 12 with a tubular guidance device 1 on or near the distal end of string 2.
  • String 2 is lowered to the required position depth in said common well bore 12 where a subterranean reservoir 7 is located.
  • the well tubular member, tubing string 2 is held stationary at the surface of the earth with slips set on the floor of the work over rig.
  • the common wellbore 12 is an open hole completion wherein no casing is deployed, and as such the tubular guidance device would be built to have an external diameter close to or indeed the same as the diameter of the borehole 12.
  • said common wellbore 12 is completed with a casing string 14.
  • Common wellbore 12, in one embodiment, is grouted into place with cement 15 across the reservoir 7.
  • a second phase 120 of FIGURE 1 depicts, by way of the surface workover rig draw works, the lowering of drill string 10 having a drill rod 11 attached to the distal end of said string 10 and a drilling device 20 on the distal end of said drill rod 11.
  • the drilling rod 11 in one embodiment comprises an alloy known as Nitinol.
  • Drill string 10 can be of various sizes, such as 1.5" OD and is lowered through tubing string 2 previously disposed in common wellbore 12, through directional guidance device 1, where drilling device 20 encounters common wellbore 12 and casing 14. Drill string 10 is then rotated from the surface using a workover rig rotary device, common to all oil and gas rotary drilling rigs well known in the industry.
  • Fluid 30 from the surface is pumped down well tubular 2 where said fluid 30 flows out of the directional guidance device 1 and flows up the common wellbore 12 casing 14 to the surface.
  • the pumping of fluid 30 assists to drag the drilling rod 11 through the passage in the directional guidance device and out into the common wellbore.
  • drilling rod 11 device can be replaced with a drilling tube 4 or electric wireline.
  • drag fluid 30 is pumped from surface down well tubing 2 and into the proximal end of the directional guidance device 1 connected to the distal end of well tubing 2 where fluid 30 passes out of the directional guidance device distal end ports.
  • Drag fluid 30 is used to propel drilling device 20 and drilling rod 11 through the passage of directional guidance device 1 into the casing 14 where said drilling device bores through said casing and out into the reservoir 7. Once the core or hole is cut in the casing 14 and cement grout 15, drill pipe 10 and drilling device 20 are extracted back to the surface from well tubing 2.
  • a drag tube 3 is lowered through well tubing 2 into the directional guidance device 1 from the surface using the workover rig draw works.
  • This drag tube 3 can be attached to a drill string 10 as shown in phase 120 or other well tubular member well known to those familiar with the art of well construction. Examples of other drill strings include coiled tubing and jointed stick pipe.
  • this drag tube 3 is lowered into place through the passage in the directional guidance device 1, it is held at the surface with slips, and a further jet drilling tube 4 having a drilling jetting bit assembly 5 on the distal end of said jet drilling tube 4 is lowered into said drag tube 3 from the surface, through the directional guidance device 1, and out into the cavity or bore created in phase 120 process by the previously discussed drilling device 20 of the second phase 120.
  • the process of placing and passing the jet drilling tube 4 and jet drilling assembly 5 is assisted by pumping a drag fluid 6 from surface down drag tube 3 wherein said drag fluid assists in pulling said jet drilling tube 4 through said drag tube 3 which was previously disposed in the directional guidance device 1.
  • a surface pump then is attached to the jet drilling tube 4 and fluid 21 is pumped down the jet drilling tube 4 and out the drilling jet bit assembly 5.
  • Fluid 21 is returned to the common wellbore 12 and into casing 14 along with drilling substances and the combined fluid mix of fluid 6 and fluid 21 are flowed back to the surface.
  • fluid 21 is cryogenic nitrogen.
  • fluid 6 is a gas.
  • the jet drilling assembly 5 comprises reverse thrusting jet nozzles to assist in propelling the jet drilling tube 4 away from the common wellbore 12 and out into the subterranean strata 7 to form a new substantially perpendicular borehole 25 connected to the common borehole 12.
  • the method of surface lowering devices for, pushing, and translating the jet drilling tube 4 away from the common wellbore 12 can be accomplished with a surface coiled tubing injector head well known to those in the field of coiled tubing deployment in the oil and gas industry or a drilling rigs draw works.
  • jet drilling fluid 21 is nitrogen, in whole or in part, such that the high pressure nitrogen coming out of the jet nozzle 5 assists in lifting fluids from common wellbore 12, cuts the formation 7, and propels the jet drilling tube 4 with the reactionary force exerted on said jet drilling string 4 from the reactionary force of the nitrogen exiting the jets of jet drilling assembly 5.
  • jet drilling tube is extracted from the well to the surface and the drilling rig rotates the tubular string 2 to a new radial position at the same depth in common wellbore 12.
  • the process of coring and creating a new borehole 25 at the new position in the common wellbore is repeated as depicted in phase 120.
  • the step of coring can be eliminated in some cases where the casing and cement grout are cut with high pressure jetting fluids coming out of the jet bit drilling assembly 5.
  • the core step can be replaced by an explosive perforating step wherein a wire line device having an explosive charge attached to a wireline truck is disposed down the drag tube 3 from the surface, and moved through the directional guidance device 1 and drag tube 3 by pumping a drag fluid 6 down the drag tube 3 whilst lowering the wireline.
  • a wire line device having an explosive charge attached to a wireline truck is disposed down the drag tube 3 from the surface, and moved through the directional guidance device 1 and drag tube 3 by pumping a drag fluid 6 down the drag tube 3 whilst lowering the wireline.
  • the wireline is retracted to the surface and a jet drilling string 4 is disposed down the drag tube, as discussed above in phase 130, to start drilling the formation 7 and creating a borehole 25.
  • the core or perforating step can be eliminated and the extraction of drag tube 3 is not required between the construction of each new radially drilled borehole 25.
  • jet drilling fluids 21 are contemplated, including, for example, acids, nitrogen, gases, cryogenic liquids, bentonite gel fluids, guar gel liquid systems, polyacrylamide gel liquid systems, oil lubricants, salt waters, attipulgite clay salt water systems, and the like.
  • borehole 25 is enlarged by jetting with high pressure fluid 21 and further enhancing the reservoir 7 fluid conductivity to the substantially perpendicular borehole 25 to the common wellbore 12.
  • the enlargement by jetting of the borehole 25 can be done by pumping hydrochloric acid as fluid 6 down the jet drilling tube 4 while boring out away from the common wellbore 12 or jetting with acid while returning the jet drilling tube 4 to the common wellbore 12.
  • cold fluids such as cryogenic nitrogen, are pumped down the jetting tube 4 to assist in cracking and jetting the formation 7 and casing 14.
  • the construction for at least a portion of the jet drilling tube 4 and drilling rod 11 may use alloys of pseudoelastic and or super elastic materials. These materials include the family of alloys known as NiTiNol.
  • FIGURE 2 shows a drawing of a directional guidance device 1 attached to the distal end a well tubular member 2 that proceeds to the surface of the earth according to one embodiment of the disclosure.
  • FIGURE 2 further shows a guidance drag tube 3 disposed inside the well tubular member 2 from the surface and terminating on the distal longitudinal side end near the end of the curved path of the directional guidance apparatus 1.
  • Drilling string 4 is loosely disposed inside guidance drag tube 3 and has attached, at its distal end, jet drilling assembly 5.
  • Drilling fluid 21 is pumped down jet drilling string 4 through jet drilling assembly 5 and cuts a borehole 25 in reservoir 7.
  • FIGURE 2 further depicts reservoir 7 producing reservoir fluid 8 from a previously bored hole while jet drilling assembly 5 is drilling another hole 25.
  • Drilling fluid 21 and drag fluid 6 are mixed outside directional guidance device 1 in common wellbore 12 and produced up the common borehole 12 with reservoir fluid 8 to the surface while the drag fluid 6 is being pumped down the guidance drag tube 3 such that the drag forces of drag fluid 6 react on drilling tube 4, thereby assisting to translate the drilling tube 4 down through drag tube 3 and out into the reservoir 7.

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  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
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  • Geochemistry & Mineralogy (AREA)
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  • Geophysics And Detection Of Objects (AREA)

Abstract

L'invention porte sur des procédés pour extraire davantage de fluides à partir de réservoirs de puits de pétrole et de gaz que ce qui est actuellement possible à l'aide de l'état antérieur des puits de forage et de fracturation hydraulique, ce qui peut être accompli avec des procédés et des appareils pour commander de façon directionnelle la construction d'une pluralité de trous de forage sensiblement perpendiculaires à partir d'un puits de forage commun et d'une pluralité de positions le long dudit puits de forage commun. Un procédé peut mettre en œuvre le forage d'une pluralité des trous de forage sensiblement perpendiculaires à partir d'un puits de forage commun construit au préalable à l'aide de procédés déséquilibrés et la production des fluides de réservoir pendant le forage des trous de forage sensiblement perpendiculaires. Dans certains procédés, l'injection de fluides à partir de la surface dans des réservoirs souterrains peut être utilisée dans le but de séquestrer des fluides ou de récupérer des fluides vers la surface.
PCT/US2014/020906 2013-03-05 2014-03-05 Forage perpendiculaire de tubulure traversant WO2014138301A2 (fr)

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US201361772798P 2013-03-05 2013-03-05
US61/772,798 2013-03-05

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Cited By (2)

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CN107762498A (zh) * 2017-09-27 2018-03-06 中国地质调查局油气资源调查中心 一种致密气藏直井体积压裂二区的压力分析方法
CN111636821A (zh) * 2020-06-01 2020-09-08 中国地质科学院矿产综合利用研究所 一种离子型稀土矿水平导流孔的成孔方法

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US9920574B2 (en) 2012-07-24 2018-03-20 Robertson Intellectual Properties, LLC In situ pump for downhole applications
WO2015126419A1 (fr) * 2014-02-24 2015-08-27 Halliburton Energy Services, Inc. Soutènement de fractures de formation souterraine à l'aide de matières particulaires à mémoire
US20150285049A1 (en) * 2014-04-07 2015-10-08 Maximo Tejeda Method of Drilling for and Producing Oil and Gas from Earth Boreholes

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