WO2014122495A1 - System and method to initiate permeability in bore holes without perforating tools - Google Patents
System and method to initiate permeability in bore holes without perforating tools Download PDFInfo
- Publication number
- WO2014122495A1 WO2014122495A1 PCT/IB2013/000586 IB2013000586W WO2014122495A1 WO 2014122495 A1 WO2014122495 A1 WO 2014122495A1 IB 2013000586 W IB2013000586 W IB 2013000586W WO 2014122495 A1 WO2014122495 A1 WO 2014122495A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- well bore
- subsystem
- gas
- liquid
- component
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000035699 permeability Effects 0.000 title description 4
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 22
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 239000002826 coolant Substances 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000002253 acid Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 229910001369 Brass Inorganic materials 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000010951 brass Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims 1
- 235000011941 Tilia x europaea Nutrition 0.000 claims 1
- 230000009977 dual effect Effects 0.000 claims 1
- 229910000856 hastalloy Inorganic materials 0.000 claims 1
- 239000004571 lime Substances 0.000 claims 1
- 230000000638 stimulation Effects 0.000 abstract description 21
- 238000005336 cracking Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000000644 propagated effect Effects 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract description 3
- 206010044565 Tremor Diseases 0.000 abstract description 2
- 230000009471 action Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 40
- 238000005755 formation reaction Methods 0.000 description 40
- 239000003507 refrigerant Substances 0.000 description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000004215 Carbon black (E152) Substances 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 230000001143 conditioned effect Effects 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 230000004936 stimulating effect Effects 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- -1 shale Substances 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 238000012424 Freeze-thaw process Methods 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-N formic acid Substances OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/114—Perforators using direct fluid action on the wall to be perforated, e.g. abrasive jets
-
- 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
-
- 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
- E21B43/27—Methods for stimulating production by forming crevices or fractures by use of eroding chemicals, e.g. acids
Definitions
- the embodiments relate in general to systems and methods for enhancing the efficiency of recovery of liquid and gaseous hydrocarbons from oil and gas wells. Irs particular, the embodiments relate to systems and methods for preparing a subsurface formation for and fracturing the subsurface formation to .facilitate or improve the .Sow of hydrocarbon fluids from the formation into a welt
- a well drilled into a hydrocarbon-bearing subsurface formation commonly produces crude oil and/or natural gas without artificial stimulation, because pre-existing formation pressure is effective to force the erode oil and/or natural gas out of the formation into the well bore, and up the production tubing of the well
- the formation pressure will gradually dissipate as more hydrocarbons ate produced, and will eventually become too low to force further hydrocarbons up the well.
- the well must be- stimulated- by artificial means to induce additional production, or else the well must be capped off and abandoned.
- fracturing fracturing
- frac fluid fracturing fluid
- Frac fluids are specially-engineered fluids containing substantial quantities of proppants, which are very small very hard, and preferably spherical particles.
- the proppants may be naturally formed (e.g., graded sand particles) or manufactured (e.g., ceramic materials; sintered bauxite).
- the frac fluid may be in a liquid form (often with a hydrocarbon base, such as dlesel fuel), but may also be in gel form to enhance the fluid's ability to hold proppants in a uniformly-dispersed suspension. Frac fluids commonly contain a variety of chemical additives to achieve desired
- the frac fluid is forced under pressure into cracks and fissures in the hydrocarbon- bearing formation, and the resulting hydraulic pressure induced within the formation materials widens existing cracks and fissures and also creates new ones.
- the frac fluid pressure is relieved, the liquid or gel phase of the frac -fluid flows out of the formation, but the proppants remain in the widened or newly-formed cracks and fissures, forming a filler material of comparatively high permeability that is strong enough to withstand geologic pressures so as to prop the cracks and fissures open.
- liquid and/or gaseous hydrocarbons can migrate through the spaces between the proppant particles and into the well bore, -from which they may be recovered using known techniques.
- Another known well stimulation. method is acidizing (also known as “acid fracturing”).
- acidizing also known as “acid fracturing”
- an acid or acid blend is pumped into a -subsurface formation as a means: for cleaning but extraneous or deleterious materials from the fissures in the formation, thus enhancing the formation's permeability.
- Hydrochloric acid is perhaps most commonly as the base acid , although other acids -.including acetic, formic, or hydrofluoric acid may be used depending on the circumstances.
- the particles present in the cracks and fissures act as natural pjoppasts to help keep the cracks and fissures open, thereby facilitating the flow of fluids from the formation into the well after the formation has thawed. Freeze-thaw fracturing enables recovery of higher percentages of non-natumliy- flowing hydrocarbons from low-permeability formations than has been possible using previously known stimulation methods.
- a system for introducing fractures into one or more points on the sides of a well bore includes: a -component having a length and width, wherein the width at its longest is less than a diameter of the well bore.
- the component further includes a first open end, a hollow core for receiving at least one of a liquid or gas therein via the first open end, a second closed end and a plurality of exit ports located along a periphery between the first open end and the second closed end of the component for facilitating exit of the at least one liquid or gas from the component into the well bore, wherein Shockwaves are generated upon exit of the at least one liquid or gas from the component to cause fractures at one or more points on the sides of the well bore.
- a method for introducing fractures at one or more points on the sides of the well bore includes: inserting a Shockwave generation device into the well bore; pumping at..least one of a cooling or heating agent into a first open end of the Shockwave generation device and through exit ports along the periphery of the Shockwave generation device to create Shockwaves upon exit of the at least one cooling or heating agent from the component and a temperature differential of at least 50 degrees Celsius within the well bore; thereby introducing fractures at one or more points on the sides of the well bore.
- a system for accessing hydrocarbons in a well bore includes: a first subsystem including a Shockwave generator for introducing fractures at one or more points on the sides of the well bore; a second subsystem for expanding fractures introduced by the first subsystem using freeze -thaw fracturing and thereby releasing hydrocarbons; and
- a pressure valve for mechanically and functionally connecting the first subsystem .to the second subsystem.
- FIG. 1 illustrates a well having a slotted liner as is known in the prior art
- FIG. 2 iliusirates a well having a slotted liner with a Shockwave generator inserted therein in accordance with as embodiment described herein;
- FIG, 3 illustrates a well having a slotted liner with a freeze-thaw stimulation device therein in accordance with the description set forth in U.S. Patent No. 7,775,281 and pending U.S. Patent Application Publication No. 2010/0263874;
- FIG, 4 illustrates a well having a slotted liner with a combination freeze-tlmw stimulation device and Shockwave generator inserted therein in accordance with an embodiment described herein;
- FIGS SA and SB illustrate various views of a pressure valve for use in the embodiment described with respect to FIG, 4,
- FIG. 1 a representative prior art vertical well 10 drilled into a hydrocarbon-bearing subsurface formation 20 is shown.
- We 1.1 10 will typically have & well liner 12, with perforations (or slots) 14 in the production zone (i.e., the portion of well 10 that penetrates formation 20) to allow hydrocarbons H to flow from formation 20 into -well 10.
- perforations (or slots) 14 in the production zone (i.e., the portion of well 10 that penetrates formation 20) to allow hydrocarbons H to flow from formation 20 into -well 10.
- well 10 can be said to be exposed to formation 20, for purposes of thi s patent specification.
- formation fluids comprising liquid and/or gaseous hydrocarbons are conveyed to the surface through a string of production tubing, (not shown) which is disposed within well 10 down to the production zone,
- a first embodiment of the present invention includes a shockwave generator 22 formed of, for example, copper, aluminum, brass, steel, hastelioy, or stainless steel materials.
- the generator 22 may be cylindrical, rectangular, square, triangular, hexagonal, polygonal in shape, so long as the largest width or diameter thereof as the ease may be, is less than the inner diameter of the well bore (or liner, if lined).
- the reverberations or reflections of Shockwaves may enhance the initiation and propagation of fracturing. Accordingly, a generator having a shape with multiple angles, e.g., hexagonal, is expected to multiply this effect.
- the generator 22 includes a hollow core and has fluid or gas exit ports 24 spaced along the sides or circumference thereof.
- the Shockwave generator 22 is introduced into the well 10 of FIG. 1 using cranes or drilling rigs as known to those skilled in the ail. and, in accordance with the methods described herein below, pre-treats or pre-conditions one or more production zones within the well 10 in order to improve the efficiency of stimulation methodologies discussed in the Background of the Embodiments.
- heating and/or cooling agents 26 i.e.. fluid, gas or combination thereof, are pumped through the Shockwave generator 22 and through the exit ports 24 and into the well 10. This process results in a combination of thermal shock and shoekwave generation whereby the well subsurface formation is subjected to stress from heat and extreme cold.
- the.leadiag Shockwaves greatly enhance the ability of the heating and/or cooling ageni(s) 26 to initiate and propagate cracks in the targeted rock surrounding the bore ' hole by generating sonic stresses that drive the rate of fracture.
- the subsurface formation may he, for example but not limited to, rock, mineral, hydrocarbon or coal.
- the heating and/or cooling agents 35 may be any singular or combination fluids and/or gases that result in a minimum, temperature differential of SO degrees Celsius. The greater the temperature differentials, the more rapid the propagation induction.
- the well 10 may be heated to.
- a cooling agent 26 at approximately -50 degrees Celsius is introduced through the Shockwave generator 22.
- the cooling agent 26 exiting the Shockwave generator 22 effects a cooling action in the walls of the well 10 which induces cracking and the cracking is further propagated by the tremors or shocks of the cooling agent as it exits the generator 22.
- FIG. 2 illustrates a well 10 with a slotted liner
- the shoekwave generator 25 and the corresponding method for using may be used in wells that are open, slotted lined or lined with perforations.
- Exemplary heating and/or cooling agent(s) 26 include, but are not limited to, liquid nitrogen, liquid carbon dioxide, calcium chloride brine, or, preferably. liquid propane, steam, hot air, hot oil, chemically created exothermic reactions I.e., sodium hydxoxide-i-HjO, Calcium Ox1de+ 3 ⁇ 40, liquid hydrogen, liquid methane, ammonia, super cooled methanol and ethanol, helium, blast air, HFC's, and glycol/water.
- G. 3 is a representative embodiment of a prior art. freeze-thaw fracturing system and method as described in. various embodiments of U.S. Patent No. 7,775,281 and U.S. Patent Application Publication No. 2010/0263874 which are incorporated by reference herei n. As described in those publications, a string of refrigerant return tubing 30 is inserted into well 10, creating a generally annular well annulus 16 surrounding return tubing Ml.
- plug means 34 may be in the form of a conventional packer disposed within the bore of return tubing 30 in accordance with known methods, or in the form, of a permanent welded end closure.
- a string of refrigerant supply tubing 40 extends within return tubing 30, creating a generally annular tubing annulus 36 surrounding supply tubing 40.
- the lower end 42 of supply tubing 40 incorporates or is connected to a flow restrictor or other type of expander means (conceptually indicated by reference numeral 50) for creating a pressure drop so as to induce vaporization of a liquid refrigerant, in accordance with well- known refrigeration principles and technology;
- a suitable liquid and/or gaseous refrigerant 70 e.g., liquid nitrogen, liquid carbon dioxide, calcium chloride brine, or, preferably, liquid propane
- a suitable liquid and/or gaseous refrigerant 70 e.g., liquid nitrogen, liquid carbon dioxide, calcium chloride brine, or, preferably, liquid propane
- Liquid refrigerant 70 is forced past expander means 50, causing the liquid refrigerant 70 to expand.
- the expanded refrigerant 7 ⁇ is forced 'upward through tubing annulus 36 to the surface, where it passes through a condenser (not shown) for recirculation into supply tubing 40.
- a second embodiment of the present invention includes a combination system and resulting method of use which combines the pre-conditioning Shockwave generator of FIG. I with a Ireeze-ihaw fracturing system similar in function to that of FIG. 3.
- the shockwave generator need not be removed from the well prior Co introducing the ixeeze-thaw stimulation system. Instead, a shockwave generator and freeze-thaw system are combined in a larger system. More particularly, shockwave generator 22 is connected to a fxeeze-thaw mechanism through a pressure actuated flow control valve 80 (described with reference to FIGS. SA, SB).
- the annular tubing configuration for the freeze-thaw system e.g., supply tubing 40 and return tubing 30, may be used as a conduit for the heating and/or cooling agent(s) 26 which is passed to the shockwave generator 22 and controlled by the pressure actuated flow control valve -SO.
- the control valve 80 includes flow port housing 82,flow ports- 84, valve and valve seat 86 and valve spring housing 88.
- t he combination system can also be controlled to perform the ireeze-thaw stimulation described with respect to FIG.3.
- FIG. 4 and in lieu of an expander means 50 shown in FIG. 3.
- the supply tubing includes perforations F along its length and when operating in the freeze-thaw stimulation mode, pressure actuated flow control valve 80 will be closed since the liquid and/or gaseous refrigerant 70 will only be introduced through the supply tubing 40 and not through both the supply tubing 40 and return tubing 30 and thus would not trigger the pressure actuated flow control valve 80 to open, instead, the pressure created by closed valve at the end of the supply tubing 40, will cause the refrigerant 70 to return through fee returntubing 30. thus causing the absorption and removal of heal from water 60 by refrigerant 70, to the -point that water 60 freezes.
- a freezing front propagates radially outward from well 10 into formation 20 as refrigerant 70 continues to circulate and remove more heat, with the result that water within cracks and fissures m formation 20 freezes and expands, causing fracturing of formation 20 as previously described.
- the combination system described, with respect to FIG. 4 enables a process whereby sections of a well 1.0 may be successively pre-conditioned by the shockwave generator 22, and then, after repositioning the system, the pre-conditioned section may be subjected to freeze-thaw stimulation. The next section may then be pre-conditioned by the shockwave generator 22, and subsequently stimulated and so on.
- the Shockwave generator and the method of use described herein may be implemented not just as a pre-conditioning component and method, but as a stand-alone stimulation meihodol.ogy.
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2013/000586 WO2014122495A1 (en) | 2013-02-05 | 2013-02-05 | System and method to initiate permeability in bore holes without perforating tools |
GB1513580.9A GB2526014A (en) | 2013-02-05 | 2013-02-05 | System and method to initiate permeability in bore holes without perforating tools |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2013/000586 WO2014122495A1 (en) | 2013-02-05 | 2013-02-05 | System and method to initiate permeability in bore holes without perforating tools |
Publications (1)
Publication Number | Publication Date |
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WO2014122495A1 true WO2014122495A1 (en) | 2014-08-14 |
Family
ID=51299270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/IB2013/000586 WO2014122495A1 (en) | 2013-02-05 | 2013-02-05 | System and method to initiate permeability in bore holes without perforating tools |
Country Status (2)
Country | Link |
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GB (1) | GB2526014A (en) |
WO (1) | WO2014122495A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108397182A (en) * | 2018-04-27 | 2018-08-14 | 河南理工大学 | Electric pulse cooperates with the device and method in the anti-reflection coal seam of frozen-thawed |
CN114810005A (en) * | 2022-05-19 | 2022-07-29 | 贵州大学 | Coal seam fracturing method with coal roadway horizontal joint cutting-carbon dioxide blasting synergistic effect |
CN115163021A (en) * | 2022-07-13 | 2022-10-11 | 中国矿业大学 | Water injection nitrogen injection gas extraction and extraction gas hole sealing device and drill hole arrangement method |
CN115234200A (en) * | 2022-08-01 | 2022-10-25 | 中国矿业大学 | Unconventional natural gas reservoir methane in-situ fixed-point combustion-explosion fracturing method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3759329A (en) * | 1969-05-09 | 1973-09-18 | Shuffman O | Cryo-thermal process for fracturing rock formations |
US5836393A (en) * | 1997-03-19 | 1998-11-17 | Johnson; Howard E. | Pulse generator for oil well and method of stimulating the flow of liquid |
WO2008048451A2 (en) * | 2006-10-13 | 2008-04-24 | Exxonmobil Upstream Research Company | Improved method of developing subsurface freeze zone |
US7775281B2 (en) * | 2006-05-10 | 2010-08-17 | Kosakewich Darrell S | Method and apparatus for stimulating production from oil and gas wells by freeze-thaw cycling |
US20100263874A1 (en) * | 2009-04-17 | 2010-10-21 | Kosakewich Darrell S | Method and apparatus for freeze-thaw well stimulation using orificed refrigeration tubing |
-
2013
- 2013-02-05 WO PCT/IB2013/000586 patent/WO2014122495A1/en active Application Filing
- 2013-02-05 GB GB1513580.9A patent/GB2526014A/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3759329A (en) * | 1969-05-09 | 1973-09-18 | Shuffman O | Cryo-thermal process for fracturing rock formations |
US5836393A (en) * | 1997-03-19 | 1998-11-17 | Johnson; Howard E. | Pulse generator for oil well and method of stimulating the flow of liquid |
US7775281B2 (en) * | 2006-05-10 | 2010-08-17 | Kosakewich Darrell S | Method and apparatus for stimulating production from oil and gas wells by freeze-thaw cycling |
WO2008048451A2 (en) * | 2006-10-13 | 2008-04-24 | Exxonmobil Upstream Research Company | Improved method of developing subsurface freeze zone |
US20100263874A1 (en) * | 2009-04-17 | 2010-10-21 | Kosakewich Darrell S | Method and apparatus for freeze-thaw well stimulation using orificed refrigeration tubing |
Cited By (8)
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GB201513580D0 (en) | 2015-09-16 |
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