US2906338A - Well treatment - Google Patents
Well treatment Download PDFInfo
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- US2906338A US2906338A US699304A US69930457A US2906338A US 2906338 A US2906338 A US 2906338A US 699304 A US699304 A US 699304A US 69930457 A US69930457 A US 69930457A US 2906338 A US2906338 A US 2906338A
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- Prior art keywords
- tubing
- well
- screen
- annulus
- interior
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- 230000015572 biosynthetic process Effects 0.000 claims description 46
- 239000003208 petroleum Substances 0.000 claims description 29
- 239000000203 mixture Substances 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 21
- 239000008187 granular material Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 14
- 239000011344 liquid material Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 description 15
- 238000012856 packing Methods 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 241000239290 Araneae Species 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003849 aromatic solvent Substances 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- -1 lease crude Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229940074355 nitric acid Drugs 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229940045870 sodium palmitate Drugs 0.000 description 1
- GGXKEBACDBNFAF-UHFFFAOYSA-M sodium;hexadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCC([O-])=O GGXKEBACDBNFAF-UHFFFAOYSA-M 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
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
- E21B43/02—Subsoil filtering
- E21B43/04—Gravelling of wells
Definitions
- This invention relates to a method and apparatus for the treatment of wells.
- this invention relates to the gravel packing of wells.
- this invention relates to an operation, and apparatus suitably employed in conjunction therewith, wherein a well is gravel packed and, if desired, fractured in substantially the same operation.
- Another object of this invention is to provide an improved method of gravel packing a well.
- Still another object of this invention is to provide an improved method and apparatus suitable for use inpressure gravel packing a well.
- Yet another object of this invention is to provide an improved well completion assembly or apparatus.
- a well bore 11 is provided with a casing 12.
- the casing 12 terminates within well bore 11 above the petroleum producing formation 14.
- production tubing 15 Attached, desirably rotatably attached or threadedly engaged to the lower end of tubing 15, is a slotted well screen or liner 16 which is disposed within well bore 11 adjacent the petroleum producing formation 14.
- a fluid-tight packer 18 is provided within the annulus between tubing 15 and casing 12.
- a closure 19 attached to or iitted into the lower end of tubing 15 is disposed between tubing 15 and liner 16 effective to prevent direct liuid communication between the interior of well screen 16 and the interior of tubing 15.
- Tubing 15, above closure 19 and below packer 18, is provided with a discharge orifice 20, such as a standard side door choke which can be operated (opened and closed) by a wire line, for the discharge of liquid or an admixture of liquid and granular material from the interior of tubing 15 into the annular space between tubing 15 and well screen 16 and well bore 11 and/or casing 12.
- discharge orifice 20 is provided with a spring loaded ball 21 contained within a spider housing 22 effective to permit the discharge of liquid and gravel from the interior of tubing 15 but also effective to prevent the ow of iluid or a mixture of fluid and granular material from the aforesaid annular space into the interior of tubing 15.
- a wire line opening is provided in the upper end of tubing 15 through which runs wire line 24 which has attached to its lower end a closure breaker orweight 25. Also in fluid communication with the upper end of tubing 15 is production conduit 26 for the introduction ofiluid or mixture of liquid and granular material into tubing 15 or for the production or delivery of liquid petroleum from formation 14 via tubing 15.
- the pressure exerted-upon the mixture within the annular space surrounding well screen 16 is suflicient to fracture the petroleum producing formation.
- Suflicient pressure may be. exerted upon the mixture within the annular space to enlarge the resulting fracture 21 to any desired extent.
- closure 19 is illustrated to be mechanically ruptured or broken by means of weight 25 suspended on wire line 24, various suitable means may be employed to rupture closure 19. These methods include placement of a suitable explosive in close proximity to closure 19 and exploding the same to rupture closure 19. This explosive may be located with respect to closure 19 by means of wire line 24.
- Another method of effecting rupture of closure 19 would be to chemically attack closure 19 by means of a chemical agent, such as an acid, e.g. hydrochloric acid, sulfuric acid, nitric -acid and the like, effective to chemically dissolve closure y19.
- closure 19 would be fabricated from a material readily attacked by the acid employed, e.g., brass, copper, zinc, etc.
- a strong base such as sodium hydroxide or caustic soda, might be employed in which event an alkali-attacked metal, such as aluminum, should be employed for the fabrication of closure 19.
- Still another method of effecting rupture of closure 19 would be to place in contact with closure 19 a sufcient amount of a solvent suitable to effect dissolution of the closure.
- a solvent suitable to effect dissolution of the closure Various solvents Vmight be employed depending upon the material employed to fabricate closure 19.
- an organic solvent such as a mixture of acetone and ether, might be employed when-closure mad@ 0f nitrocellulose, or benzene or other highly aromatic solvents might be employed when closure 19 is fabricated from a bituminous material,A such as tar.
- Various fluids may be utilized as the carrier liquid employed in the gravel packing operations in accordance with the practice of this invention.
- These fluids include the normally liquid hydrocarbons, crude petroleum, lease crude, petroleum fractions, diesel oil or kerosene, lease crude or petroleum fractions such as diesel oil or kerosene thickened with a suitable thickening or gelling agent such as sodium palmitate (Napalm) and the like.
- Aqueous liquids such as water, thickened or unthickened with additives which increase the viscosity thereof and reduce fluid loss, as well as brines, such as formation'brines, might be suitably employed as a carrier liquid in a gravel packing operation in accordance with this invention.
- An apparatus suitable for use in well completion which comprises a tubing, a well screen attached at its upper end to the lower end of said tubing, a closure positioned within said tubing above said well screen effective to prevent direct fluid communication between the interior of said tubing and the interior of said screen and a llow control tone provided within said -tubing above 'said closure adapted for the discharge of uid from the interior of said tubing.
- a well completion assembly comprising a tubing, a well screen 4attached to the lower end of said tubing, a closure disposed within said tubing between said tubing and said screen effective to prevent direct uid communication between the interior of said screen and the interior of said tubing, ow discharge means provided within said tubing above said closure and adapted for the discharge of fluid from the interior of said tubing to the outside thereof and a production packer surrounding said tubing above said discharge means, said production packer being adapted to make a fluid type seal about the outside of said tubing.
- said fracturing liquid comprises a liquid hydrocarbon and wherein said granular material is sand.
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- 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)
- Filtering Materials (AREA)
Description
Sept. 29, 1959 A. M. sHooK 2,906,338
WELL TREATMENT Filed Nov. 27, 1957 United lStates Patent WELL TREATMENT Austen M. Shook, Houston, Tex., assigner to Texaco Inc., a corporation of Delaware Application November 27, 1957, Serial No. 699,304 Claims. (Cl. 166-15) This invention relates to a method and apparatus for the treatment of wells. In accordance with one embodiment this invention relates to the gravel packing of wells. In accordance with another embodiment this invention relates to an operation, and apparatus suitably employed in conjunction therewith, wherein a well is gravel packed and, if desired, fractured in substantially the same operation.
In the production of petroleum from a petroleum producing formation one difliculty sometimes encountered, particularly when the petroleum producing formation is an unconsolidated formation, is the productivity of the well becomes reduced after a period of time due to the sanding up or plugging of the well. To avoid this reduction in well productivity due to a well sanding up it has been proposed heretofore to gravel pack a well. In a gravel packing operation a filter bed of porous granular material is deposited Within the Well bore adjacent the petroleum producing formation. This porous gravel bed tends to support the adjacent petroleum producing formation and tends to prevent the well from sanding up due to the transport of nely divided solid material from the producing formation into the Well bore.
Recently it has been proposed, see patent application Serial No. 401,159 iiled December 30, 1953, now U.S. 2,814,347, the disclosures of which are herein incorporated and made part of this disclosure, to carry out a gravel packing and formation fracturing operation substantially simultaneously. The operations disclosed therei-n, however, are complicated and require the use of a rather large amount of equipment and production tubing or conduit.
It is therefore an object of this invention to provide an improved method of Well treatment.
It is another object of this invention to provide an improved method of effecting gravel packing and formation fracturing substantially simultaneously.
Another object of this invention is to provide an improved method of gravel packing a well.
Still another object of this invention is to provide an improved method and apparatus suitable for use inpressure gravel packing a well.
Yet another object of this invention is to provide an improved well completion assembly or apparatus.
How these and otherobjects of this invention are accomplished will become apparent in the light of the accompayning disclosure made with reference to the accompanying drawing which schematically illustrates one embodiment of the practice of this invention particularly useful for carrying out a combination well gravel packing and fracturing operation. In at least one embodiment of the practice of this invention at least one of the foregoing objects is accomplished. p
In accordance with this invention it has now been discovered that an improved well completion operation is obtained by disposing a well screen or liner within a well bore adjacent a petroleum producing formation and then carrying out a subsequent gravel packing operation Patented Sept. 29, 1959 ICC via the production tubing. The production tubing, after completion of the well treatment or gravel packing operation, is then employed to carry the produced petroleum from the resulting treated formation.
Referring now in detail to the accompanying drawing which schematically illustrates a practice of this invention as directed toa well treatment operation involving gravel packing in combination with formation fracturing, a well bore 11 is provided with a casing 12. As illustrated in the drawing, the casing 12 terminates within well bore 11 above the petroleum producing formation 14. Provided within casing 12 is production tubing 15. Attached, desirably rotatably attached or threadedly engaged to the lower end of tubing 15, is a slotted well screen or liner 16 which is disposed within well bore 11 adjacent the petroleum producing formation 14. As illustrated in the accompanying drawing, that portion of the well bore below the end of casing 12 is open hole. A fluid-tight packer 18 is provided within the annulus between tubing 15 and casing 12.
A closure 19 attached to or iitted into the lower end of tubing 15 is disposed between tubing 15 and liner 16 effective to prevent direct liuid communication between the interior of well screen 16 and the interior of tubing 15. Tubing 15, above closure 19 and below packer 18, is provided with a discharge orifice 20, such as a standard side door choke which can be operated (opened and closed) by a wire line, for the discharge of liquid or an admixture of liquid and granular material from the interior of tubing 15 into the annular space between tubing 15 and well screen 16 and well bore 11 and/or casing 12. As illustrated in the accompanying drawing, discharge orifice 20 is provided with a spring loaded ball 21 contained Within a spider housing 22 effective to permit the discharge of liquid and gravel from the interior of tubing 15 but also effective to prevent the ow of iluid or a mixture of fluid and granular material from the aforesaid annular space into the interior of tubing 15.
A wire line opening is provided in the upper end of tubing 15 through which runs wire line 24 which has attached to its lower end a closure breaker orweight 25. Also in fluid communication with the upper end of tubing 15 is production conduit 26 for the introduction ofiluid or mixture of liquid and granular material into tubing 15 or for the production or delivery of liquid petroleum from formation 14 via tubing 15.
In an operation in accordance with the practice of this invention wherein a petroleum producing formation is gravel packed a mixture of carrier liquid and granular material, such as sand or finely divided gravel, is introduced via production conduit'26 into tubing 15. This mixture is ydischarged from tubing 15 via discharge coni therefore becomes lled with liquid, the granular material remaining outside within the annular space since it is too large -to pass through the slots or perforations of,
well screen 16. Further, since closure -19 is interposed between well screen 16 and tubing 15 flow of carrier.
liquid up through the tubing 15 is possible. Pressure, by suitable means such as a pump (not shown), such as uid pressure exerted by liquid ifilling tubing 15, is then The interior of Well screen l16, sincev o* exerted upon the liquid filling the interior of well screen 16 and its surrounding annular spacesuflicient to force at least a portion of the mixture of carrier liquid and granular material therein into the surrounding petroleum producing formation.
Desirably the pressure exerted-upon the mixture within the annular space surrounding well screen 16 is suflicient to fracture the petroleum producing formation. When a fracture occurs at least a portion of the mixture of carrier liquid and granular material is forced into the formation and granular material deposited within the resulting fracture. Suflicient pressure may be. exerted upon the mixture within the annular space to enlarge the resulting fracture 21 to any desired extent.
Since the interior of well screen 16 and the annular space surrounding the Well screen 16 are in direct fluid communication substantially the same fluid pressure would exist within the well screen interior and the-annular space; Further, it is pointed out that since the pressure exerted upon the mixture within the annular space surrounding the well screen is fluid pressure derived from suitable pressuring means, such as al pump located at the surface, not illustrated, via production conduit 26 and tubing 15, the pressure differential across closure 19 will be at a substantially low value, approaching zero. Further, with packer 18 positioned as described hereinabove the pressure within the annular space against the petroleum producing formation 14 is readily maintained and exerted substantially exclusively against the producing formation 14 undergoing treatment.
When the formation has been gravel packed, and desirably fractured, such that there remains a residue or bed of the granular material within the annular space defined by the well screen 16 and the adjacent petroleum producing formation 14 the pressure exerted upon the mixture within the annular space is removed. Thereupon wire line 24 carrying closure breaker 25 is caused to descend or fold to mechanically rupture or break closure 19. When this occurs the interior of well screen 16 is now in direct fluid communication with the interior of tubing 15. Production of petroleum from the resulting treated formation 14 is then resumed, the petroleum being produced through the gravel pack now occupying the annular space between the well screen 16 and adjacent formation 14, through well screen 16 and upwardly through the interior thereof through tubing and recovered at the surface via production conduit 26. It is mentioned during these production operations that discharge orifice is closed by` spring loaded ball 21 operating within the spider housing 22.
Although in the embodiment illustrated in the drawing the closure 19 is illustrated to be mechanically ruptured or broken by means of weight 25 suspended on wire line 24, various suitable means may be employed to rupture closure 19. These methods include placement of a suitable explosive in close proximity to closure 19 and exploding the same to rupture closure 19. This explosive may be located with respect to closure 19 by means of wire line 24. Another method of effecting rupture of closure 19 would be to chemically attack closure 19 by means of a chemical agent, such as an acid, e.g. hydrochloric acid, sulfuric acid, nitric -acid and the like, effective to chemically dissolve closure y19. In this embodiment closure 19 would be fabricated from a material readily attacked by the acid employed, e.g., brass, copper, zinc, etc. If desired, a strong base, such as sodium hydroxide or caustic soda, might be employed in which event an alkali-attacked metal, such as aluminum, should be employed for the fabrication of closure 19.
Still another method of effecting rupture of closure 19 would be to place in contact with closure 19 a sufcient amount of a solvent suitable to effect dissolution of the closure. Various solvents Vmight be employed depending upon the material employed to fabricate closure 19. For example, an organic solvent, such asa mixture of acetone and ether, might be employed when-closure mad@ 0f nitrocellulose, or benzene or other highly aromatic solvents might be employed when closure 19 is fabricated from a bituminous material,A such as tar.
Although the drawing shows the well bore 11 penetrating the petroleum producing formation 14 to be an open hole it is pointed out that the practice of this invention is applicable to a cased formation wherein the petroleum producing formation is provided with a perforated casing and the like. When the petroleum producing formation is provided with a perforated casing the mixture of granular material and carrier liquid is forced into the petroleum producing formation via the perforations in the casing and the fluidpressure exerted through these perforations is sulllcient to fracture said formation.
Various fluids may be utilized as the carrier liquid employed in the gravel packing operations in accordance with the practice of this invention. These fluids include the normally liquid hydrocarbons, crude petroleum, lease crude, petroleum fractions, diesel oil or kerosene, lease crude or petroleum fractions such as diesel oil or kerosene thickened with a suitable thickening or gelling agent such as sodium palmitate (Napalm) and the like. Aqueous liquids such as water, thickened or unthickened with additives which increase the viscosity thereof and reduce fluid loss, as well as brines, such as formation'brines, might be suitably employed as a carrier liquid in a gravel packing operation in accordance with this invention.
As will be apparent to those skilled in the art many modifications, changes and alterations are possible in the practice of this invention without departing from the spirit or scope thereof.
I claim:
1. A method of treating a well in which a well screen is disposed in the well boreopposte the petroleum producing formation to provide an annulus between said well screen and said formation, the interior of said screen being in fluid communication with said annulus, said well screen being attached at the upper end thereof to a tubing within said well bore, said tubing being provided therein with a closure at about the position where said well screen is attached to said tubing effective to prevent direct fluid communication between the interior of said tubing and the interior of said well screen, which comprises introducing into said annulus a mixture of granular material and a liquid in an amount at least sufficient to occupy said annulus, directing fluid under pressure tothe mixture in the annulus and to the interior of the screen so as to `exert a pressure on said liquid within said annulus sufficient to force some of said mixture comprising liquid and granular material into said formation while at the same time maintaining substantially the same fluid pressure within the annulus during the aforesaid pressuringzoperation, leaving within said annulus granular material to form a filter pack between said formation and' said screen and removing said closure between said screen and said tubing so as to provide directllluid communication between the interior of said screen and said tubing.
2. A methodin accordance with claim l wherein said mixture of granular material and liquid is introduced into said annulus via said tubing through a valved opening provided in said tubing'above said closure and-wherein the pressure differential across said closure between said tubing and said screen is substantially Vzero.
3. A method in accordance with claim l wherein the pressure exertedl on said mixture in said annulus is sufficient to fracture said formation.
4. A method in accordance with claim 1 wherein said closure is removed by mechanically rupturing'said closure.
5. A method in accordance with claim 1 wherein said closure is removed by chemically attacking said closure to effect dissolution of said closure.
6. A method in accordance with claim-1 wherein said suitable solvent.
than
7. An apparatus suitable for use in well completion which comprises a tubing, a well screen attached at its upper end to the lower end of said tubing, a closure positioned within said tubing above said well screen effective to prevent direct fluid communication between the interior of said tubing and the interior of said screen and a llow control orice provided within said -tubing above 'said closure adapted for the discharge of uid from the interior of said tubing.
8. A well completion assembly comprising a tubing, a well screen 4attached to the lower end of said tubing, a closure disposed within said tubing between said tubing and said screen effective to prevent direct uid communication between the interior of said screen and the interior of said tubing, ow discharge means provided within said tubing above said closure and adapted for the discharge of fluid from the interior of said tubing to the outside thereof and a production packer surrounding said tubing above said discharge means, said production packer being adapted to make a fluid type seal about the outside of said tubing.
9. A method of treating a well in which a Well screen is disposed in the well bore opposite the petroleum producing formation to provide an annulus between said screen and said formation, the interior of said screen being in fluid communication with said annulus, said well screen being attached at the upper end thereof to a tubing within said well bore, said tubing being provided therein with a closure at about the position where said well screen s attached to said tubing, effective to prevent direct uid communication between the interior of said tubing and the interior of said well screen, which comprises introducing into said annulus a mixture of granular material and a fracturing liquid in an amount at least sucient to occupy said annulus, said fracturing liquid being in contact with said formation, exerting a pressure upon said mixture in said annulus sufficient to fracture said formation and to force some of said mixture into said formation, the fluid pressure within the interior of said well screen and said annulus during the aforesaid fracturing operation being substantially the same, removing said closure and producing petroleum from the resulting treated formation via said well screen and tubing, the produced petroleum flowing from the interior of said screen directly into the interior of said tubing.
10. A method in accordance with claim 9 wherein said fracturing liquid comprises a liquid hydrocarbon and wherein said granular material is sand.
References Cited in the le of this patent UNITED STATES PATENTS 2,207,334 Reynolds et al. July 9, 1940 2,217,215 Coberly Oct. 8, 1940 2,349,062 AUren May 16, 1944 2,359,302 Curtis Oct. 3, 1944
Claims (1)
1. A METHOD OF TREATING A WELL IN WHICH A WELL SCREEN IS DISPOSED IN THE WELL BORE OPPOSITE THE PETROLEUM PRODUCING FORMATION TO PROVIDE AN ANNULUS BETWEEN SAID WELL SCREEN AND SAID FORMATION, THE INTERIOR OF SAID SCREEN BEING IN FLUID COMMUNICATION WITH SAID ANNULUS, SAID WELL SCREEN BEING ATTACHED AT THE UPPER END THEREOF TO A TUBING WITHIN SAID WELL BORE, SAID TUBING BEING PROVIDED THEREIN WITH A CLOSURE AT ABOUT THE POSITION WHERE SAID WELL SCREEN IS ATTACHED TO SAID TUBING EFFECTIVE TO PREVENT DIRECT FLUID COMMUNICATION BETWEEN THE INTERIOR OF SAID TUBING AND THE INTERIOR OF SAID WELL SCREEN, WHICH COMPRISES INTRODUCING INTO SAID ANNULUS A MIXTURE OF GRANULAR MATERIAL AND A LIQUID IN AN AMOUNT AT LEAST SUFFICIENT TO OCCUPY SAID ANNULUS, DIRECTING FLUID UNDERPRESSURE TO THE MIXTURE IN THE ANNULUS AND TO THE INTERIOR OF THE SCREEN SO AS TO EXERT A PRESSURE ON SAID LIQUID WITHIN SAID ANNULUS SUFFICIENT TO FORCE SOME OF SAID MIXTURE COMPRISING LIQUID AND GRANULAR MATERIAL INTO SAID FORMATION WHILE AT THE SAME TIME MAINTAINING SUBSTANTIALLY THE SAME FLUID PRESSURE WITHIN THE ANNULUS DURING THE AFORESAID PRESSURING OPERATION, LEAVING WITHIN SAID ANNULUS GRANULAR MATERIAL TO FORM A FILTER PACK BETWEEN SAID FORMATION AND SAID SCREEN AND REMOVING SAID CLOSURE BETWEEN SAID SCREEN AND SAID TUBING SO AS TO PROVIDE DIRECT FLUID COMMUNICATION BETWEEN THE INTERIOR OF SAID SCREEN AND SAID TUBING.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US699304A US2906338A (en) | 1957-11-27 | 1957-11-27 | Well treatment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US699304A US2906338A (en) | 1957-11-27 | 1957-11-27 | Well treatment |
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US2906338A true US2906338A (en) | 1959-09-29 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US699304A Expired - Lifetime US2906338A (en) | 1957-11-27 | 1957-11-27 | Well treatment |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2978027A (en) * | 1958-01-20 | 1961-04-04 | Texaco Inc | Well treatment |
US3134439A (en) * | 1960-06-27 | 1964-05-26 | Gulf Oil Corp | Gravel packing apparatus |
US4114687A (en) * | 1977-10-14 | 1978-09-19 | Texaco Inc. | Systems for producing bitumen from tar sands |
US4114691A (en) * | 1977-10-14 | 1978-09-19 | Texaco Inc. | Method for controlling sand in thermal recovery of oil from tar sands |
US4982790A (en) * | 1989-12-29 | 1991-01-08 | Mobil Oil Corporation | Method to reduce movement of a CPF device via a gelled petroleum based fluid |
US5127474A (en) * | 1990-12-14 | 1992-07-07 | Marathon Oil Company | Method and means for stabilizing gravel packs |
US5150754A (en) * | 1991-05-28 | 1992-09-29 | Mobil Oil Corporation | Aqueous and petroleum gel method for preventing water-influx |
US20050279501A1 (en) * | 2004-06-18 | 2005-12-22 | Surjaatmadja Jim B | System and method for fracturing and gravel packing a borehole |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2207334A (en) * | 1939-03-20 | 1940-07-09 | Union Oil Co | Method and apparatus for placing a filter body in a well |
US2217215A (en) * | 1938-01-24 | 1940-10-08 | Kobe Inc | Gravel packing for wells |
US2349062A (en) * | 1942-03-27 | 1944-05-16 | Texas Co | Method and apparatus for graveling wells |
US2359302A (en) * | 1942-06-11 | 1944-10-03 | Tung Sol Lamp Works Inc | Incandescent lamp and method of manufacture |
-
1957
- 1957-11-27 US US699304A patent/US2906338A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2217215A (en) * | 1938-01-24 | 1940-10-08 | Kobe Inc | Gravel packing for wells |
US2207334A (en) * | 1939-03-20 | 1940-07-09 | Union Oil Co | Method and apparatus for placing a filter body in a well |
US2349062A (en) * | 1942-03-27 | 1944-05-16 | Texas Co | Method and apparatus for graveling wells |
US2359302A (en) * | 1942-06-11 | 1944-10-03 | Tung Sol Lamp Works Inc | Incandescent lamp and method of manufacture |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2978027A (en) * | 1958-01-20 | 1961-04-04 | Texaco Inc | Well treatment |
US3134439A (en) * | 1960-06-27 | 1964-05-26 | Gulf Oil Corp | Gravel packing apparatus |
US4114687A (en) * | 1977-10-14 | 1978-09-19 | Texaco Inc. | Systems for producing bitumen from tar sands |
US4114691A (en) * | 1977-10-14 | 1978-09-19 | Texaco Inc. | Method for controlling sand in thermal recovery of oil from tar sands |
US4982790A (en) * | 1989-12-29 | 1991-01-08 | Mobil Oil Corporation | Method to reduce movement of a CPF device via a gelled petroleum based fluid |
US5127474A (en) * | 1990-12-14 | 1992-07-07 | Marathon Oil Company | Method and means for stabilizing gravel packs |
US5150754A (en) * | 1991-05-28 | 1992-09-29 | Mobil Oil Corporation | Aqueous and petroleum gel method for preventing water-influx |
US20050279501A1 (en) * | 2004-06-18 | 2005-12-22 | Surjaatmadja Jim B | System and method for fracturing and gravel packing a borehole |
US7243723B2 (en) * | 2004-06-18 | 2007-07-17 | Halliburton Energy Services, Inc. | System and method for fracturing and gravel packing a borehole |
GB2430962B (en) * | 2004-06-18 | 2009-08-26 | Halliburton Energy Serv Inc | System and method for fracturing and gravel packing a borehole |
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