US20140224494A1 - Solid Chemical Well Treatment - Google Patents
Solid Chemical Well Treatment Download PDFInfo
- Publication number
- US20140224494A1 US20140224494A1 US14/236,022 US201214236022A US2014224494A1 US 20140224494 A1 US20140224494 A1 US 20140224494A1 US 201214236022 A US201214236022 A US 201214236022A US 2014224494 A1 US2014224494 A1 US 2014224494A1
- Authority
- US
- United States
- Prior art keywords
- well treatment
- chemical
- silica
- matrix
- silicate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
Definitions
- the present invention relates to hydraulic fracturing and delivery methods for well treatment chemicals.
- the invention is directed to a method for fracturing a formation accessible through a wellbore.
- the method comprises the steps of providing an anhydrous silicate matrix formed to carry a well treatment chemical within the matrix to form a solid chemical and pumping the solid chemical, a proppant, and a fracturing fluid into the wellbore.
- the solid chemical is positioned within a fracture created by the fracturing fluid and provides a metered release of the well treatment chemical therefrom.
- the invention is directed to a well treatment device.
- the device comprises an anhydrous silica matrix and a well treatment chemical held within the silica matrix to form a solid chemical.
- the chemical is releasable from the silica matrix within a wellbore.
- the invention is directed to a device for delivering a well treatment chemical into a wellbore.
- the chemical is prepared by a process.
- the process comprises providing a silicate matrix, heating the silicate matrix to drive off moisture contained therein to form an anhydrous silicate, and mixing the anhydrous silicate with a well treatment chemical to absorb the well treatment chemical with the silicate matrix to form a solid chemical.
- FIG. 1 is a diagrammatic representation of an injection well and material delivery system for delivery of the well treatment chemical created in the process of FIG. 2 .
- FIG. 2 is a flow chart demonstrating a process of creating the solid well treatment chemical of the present invention.
- a hydraulic fracture is formed by pumping the fracturing fluid into the wellbore at a rate sufficient to increase pressure downhole to exceed that of the fracture gradient of the rock.
- the rock cracks and the fracture fluid enters the rock, extending the crack.
- a solid proppant commonly sand, is added to the fluid.
- the propped fracture is permeable enough to allow the flow of formation fluids to the well.
- Formation fluids include gas, oil, salt water, fresh water and fluids introduced to the formation during completion of the well during fracturing.
- the injection well comprises a well shaft 12 within a subterranean formation 14 .
- the well shaft 12 comprises a vertical shaft 16 and may comprise a horizontal section 18 .
- the well shaft 12 comprises a well casing 20 that is adapted to seal a portion of the well shaft 12 such that fluids may not travel into our out of the subterranean formation 14 proximate the well casing.
- the well shaft 12 further comprises a production portion 22 that does not have a well casing 20 such that well treatment chemicals such as fracturing chemicals may be delivered to the subterranean formation 14 and desired products such as oil, natural gas, and natural gas liquids are removed from the subterranean formation.
- well treatment chemicals such as fracturing chemicals may be delivered to the subterranean formation 14 and desired products such as oil, natural gas, and natural gas liquids are removed from the subterranean formation.
- a material delivery system 24 is provided at ground level proximate the injection well 10 .
- the material delivery system 24 delivers products into the well shaft 12 for enhancement of the drilling process.
- the material delivery system is preferably used in conjunction with a fracturing system 26 for delivery of ground level fracturing fluid into the well shaft 12 .
- the fracturing fluid when delivered to the subterranean formation 14 , causes hydraulic fracture and allows delivery of proppant and well treatment chemicals.
- the material delivery system 24 comprises a well treatment product 30 which is created through the process of FIG. 2 .
- FIG. 2 a method for creating an enhanced well treatment product 30 for delivery to the subterranean formation 22 by the material delivery system 24 is shown.
- liquid products have associated weaknesses, such as immediate delivery to a treatment location and an inability to control the delivery of chemical product over time.
- the method shown in FIG. 2 provides an advantageous process for creating a well treatment product 30 in a solid matrix form.
- the method starts at 100 .
- a silicate matrix is provided at 102 .
- the silicate matrix is heated at 104 to drive off moisture contained therein. When the moisture is removed, an anhydrous silicate is left at 106 .
- the anhydrous silicate is mixed with a well treatment chemical at 108 and the well treatment chemical is absorbed within the anhydrous silicate matrix at 110 to form a solid chemical.
- the solid chemical may then be coated with a resinous material at 112 .
- the solid chemical, a proppant, and a fracturing fluid are pumped into the wellbore at 114 . This causes the solid chemical to be positioned within the subterranean formation 14 and more particularly a fracture therein created by the fracturing fluid, providing a metered release of well treatment chemical at 116 .
- the method ends at 118 .
- the solid chemical may comprise a silica spheroid, a silica pellet, or other shape.
- the solid chemical silica matrix is a porous anhydrous silica spheroid.
- “well treatment product” 30 comprises an advantageous chemical such as a scale inhibitor, corrosion inhibitor, paraffin product, H 2 S scavenger, or foamer. Additionally, the product 30 could be an emulsifier, non-emulsifier, wetting agent, sludge preventive, retarder, suspension agent, anti-swelling agent, or stimulation additive.
Abstract
A solid chemical delivery system for delivering solid well treatment chemicals to an underground formation. The solid chemical is formed by dehydrating a silicate to form anhydrous silicate. Well chemicals are then introduced to the silica and form a tablet or pelletized chemical. The pelletized solid chemical is then delivered to the underground formation through the well bore with a proppant and fracturing fluid. This allows the well treatment chemicals to be released over time.
Description
- The present invention relates to hydraulic fracturing and delivery methods for well treatment chemicals.
- The invention is directed to a method for fracturing a formation accessible through a wellbore. The method comprises the steps of providing an anhydrous silicate matrix formed to carry a well treatment chemical within the matrix to form a solid chemical and pumping the solid chemical, a proppant, and a fracturing fluid into the wellbore. The solid chemical is positioned within a fracture created by the fracturing fluid and provides a metered release of the well treatment chemical therefrom.
- In another embodiment the invention is directed to a well treatment device. The device comprises an anhydrous silica matrix and a well treatment chemical held within the silica matrix to form a solid chemical. The chemical is releasable from the silica matrix within a wellbore.
- In another embodiment, the invention is directed to a device for delivering a well treatment chemical into a wellbore. The chemical is prepared by a process. The process comprises providing a silicate matrix, heating the silicate matrix to drive off moisture contained therein to form an anhydrous silicate, and mixing the anhydrous silicate with a well treatment chemical to absorb the well treatment chemical with the silicate matrix to form a solid chemical.
-
FIG. 1 is a diagrammatic representation of an injection well and material delivery system for delivery of the well treatment chemical created in the process ofFIG. 2 . -
FIG. 2 is a flow chart demonstrating a process of creating the solid well treatment chemical of the present invention. - A hydraulic fracture is formed by pumping the fracturing fluid into the wellbore at a rate sufficient to increase pressure downhole to exceed that of the fracture gradient of the rock. The rock cracks and the fracture fluid enters the rock, extending the crack. To keep this fracture open after the injection stops, a solid proppant, commonly sand, is added to the fluid.
- The propped fracture is permeable enough to allow the flow of formation fluids to the well. Formation fluids include gas, oil, salt water, fresh water and fluids introduced to the formation during completion of the well during fracturing.
- Turning to the figures in general and
FIG. 1 specifically, shown therein is an injection well 10 for use with the claimed invention. The injection well comprises awell shaft 12 within asubterranean formation 14. Thewell shaft 12 comprises avertical shaft 16 and may comprise ahorizontal section 18. Further, thewell shaft 12 comprises awell casing 20 that is adapted to seal a portion of thewell shaft 12 such that fluids may not travel into our out of thesubterranean formation 14 proximate the well casing. Thewell shaft 12 further comprises aproduction portion 22 that does not have a wellcasing 20 such that well treatment chemicals such as fracturing chemicals may be delivered to thesubterranean formation 14 and desired products such as oil, natural gas, and natural gas liquids are removed from the subterranean formation. - A
material delivery system 24 is provided at ground level proximate the injection well 10. Thematerial delivery system 24 delivers products into thewell shaft 12 for enhancement of the drilling process. The material delivery system is preferably used in conjunction with afracturing system 26 for delivery of ground level fracturing fluid into thewell shaft 12. The fracturing fluid, when delivered to thesubterranean formation 14, causes hydraulic fracture and allows delivery of proppant and well treatment chemicals. Thematerial delivery system 24 comprises a welltreatment product 30 which is created through the process ofFIG. 2 . - With reference now to
FIG. 2 , a method for creating an enhancedwell treatment product 30 for delivery to thesubterranean formation 22 by thematerial delivery system 24 is shown. As one skilled in the art will appreciate, liquid products have associated weaknesses, such as immediate delivery to a treatment location and an inability to control the delivery of chemical product over time. The method shown inFIG. 2 provides an advantageous process for creating awell treatment product 30 in a solid matrix form. The method starts at 100. A silicate matrix is provided at 102. The silicate matrix is heated at 104 to drive off moisture contained therein. When the moisture is removed, an anhydrous silicate is left at 106. The anhydrous silicate is mixed with a well treatment chemical at 108 and the well treatment chemical is absorbed within the anhydrous silicate matrix at 110 to form a solid chemical. The solid chemical may then be coated with a resinous material at 112. The solid chemical, a proppant, and a fracturing fluid are pumped into the wellbore at 114. This causes the solid chemical to be positioned within thesubterranean formation 14 and more particularly a fracture therein created by the fracturing fluid, providing a metered release of well treatment chemical at 116. The method ends at 118. - The solid chemical may comprise a silica spheroid, a silica pellet, or other shape. Preferably, the solid chemical silica matrix is a porous anhydrous silica spheroid. As used herein, “well treatment product” 30 comprises an advantageous chemical such as a scale inhibitor, corrosion inhibitor, paraffin product, H2S scavenger, or foamer. Additionally, the
product 30 could be an emulsifier, non-emulsifier, wetting agent, sludge preventive, retarder, suspension agent, anti-swelling agent, or stimulation additive. - One skilled in the art can envision other potential combinations of the principles disclosed in the above embodiments.
Claims (20)
1. A method for fracturing a formation accessible through a wellbore, the method comprising:
providing an anhydrous silicate matrix formed to carry a well treatment chemical within the matrix to form a solid chemical; and
pumping the solid chemical, a proppant, and a fracturing fluid into the wellbore;
wherein the solid chemical is positioned within a fracture created by the fracturing fluid and provides a metered release of the well treatment chemical therefrom,
2. The method of claim 1 wherein the anhydrous silicate comprises a silica spheroid.
3. The method of claim 1 wherein the anhydrous silicate comprises a silica pellet.
4. The method of claim 1 further comprising coating the solid chemical with a resinous material.
5. The method of claim 1 wherein the well treatment chemical comprises at least one of the following selected from: scale inhibitors, corrosion inhibitors, paraffin products, H2S scavengers, or foamers.
6. The method of claim 1 wherein the well treatment chemical comprises at least one of the following selected from: emulsifiers, inhibitors, non-emulsifiers, wetting agents, sludge preventives, retarders, suspension agents, anti-swelling agents, or stimulation additives.
7. The method of claim 1 wherein the silicate matrix comprises a porous anhydrous silica spheroid.
8. A well treatment device comprising:
an anhydrous silica matrix; and
a well treatment chemical held within the silica matrix to form a solid chemical; wherein the chemical is releasable from the silica matrix within a wellbore.
9. The device of claim 8 wherein the well treatment chemical comprises at least one of the following selected from: scale inhibitors, corrosion inhibitors, paraffin products, H2S scavengers, or foamers.
10. The device of claim 8 wherein the well treatment chemical comprises at least one of the following selected from: emulsifiers, inhibitors, non-emulsifiers, wetting agents, sludge preventives, retarders, suspension agents, anti-swelling agents, or stimulation additives.
11. The device of claim 8 wherein the anhydrous silica matrix comprises a silica spheroid.
12. The device of claim 8 wherein the anhydrous silica matrix comprises a silica pellet.
13. The device of claim 8 further comprising a resinous coating surrounding the anhydrous silica matrix.
14. A device for delivering a well treatment chemical into a wellbore prepared by a process comprising:
providing a silicate matrix;
heating the silicate matrix to drive off moisture contained therein to form an anhydrous silicate; and
mixing the anhydrous silicate with a well treatment chemical to absorb the well treatment chemical with the silicate matrix to form a solid chemical.
15. The device of claim 14 wherein the anhydrous silicate comprises a silica spheroid.
16. The device of claim 14 wherein the anhydrous silicate comprises a silica pellet.
17. The device of claim 14 further comprising coating the solid chemical with a resinous material.
18. The device of claim 14 wherein the well treatment chemical . comprises at least one of the following selected from: scale inhibitors, corrosion inhibitors, paraffin products, H2S scavengers, or foamers.
19. The device of claim 14 wherein the well treatment chemical comprises at least one of the following selected from: emulsifiers, inhibitors, non-emulsifiers, wetting agents, sludge preventives, retarders, suspension agents, anti-swelling agents, or stimulation additives.
20. The device of claim 14 wherein the silicate matrix comprises a porous anhydrous silica spheroid.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2012/032376 WO2013151551A1 (en) | 2012-04-05 | 2012-04-05 | Solid chemical well treatment |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2012/032376 A-371-Of-International WO2013151551A1 (en) | 2012-04-05 | 2012-04-05 | Solid chemical well treatment |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/881,995 Continuation-In-Part US20160032175A1 (en) | 2012-04-05 | 2015-10-13 | Method For Coating A Well Treatment Chemical |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140224494A1 true US20140224494A1 (en) | 2014-08-14 |
Family
ID=49300877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/236,022 Abandoned US20140224494A1 (en) | 2012-04-05 | 2012-04-05 | Solid Chemical Well Treatment |
Country Status (3)
Country | Link |
---|---|
US (1) | US20140224494A1 (en) |
MX (1) | MX2014002111A (en) |
WO (1) | WO2013151551A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016140656A1 (en) * | 2015-03-04 | 2016-09-09 | Halliburton Energy Services, Inc. | Wellbore additives that include liquid-infiltrated porous silica |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3865190A (en) * | 1973-07-09 | 1975-02-11 | Texaco Inc | Hydraulic fracturing method |
US5873413A (en) * | 1997-08-18 | 1999-02-23 | Halliburton Energy Services, Inc. | Methods of modifying subterranean strata properties |
US7160844B2 (en) * | 2003-11-04 | 2007-01-09 | Global Synfrac Inc. | Proppants and their manufacture |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9503949D0 (en) * | 1995-02-28 | 1995-04-19 | Atomic Energy Authority Uk | Oil well treatment |
US6209646B1 (en) * | 1999-04-21 | 2001-04-03 | Halliburton Energy Services, Inc. | Controlling the release of chemical additives in well treating fluids |
US20030141064A1 (en) * | 2002-01-31 | 2003-07-31 | Roberson James David | Method and apparatus for fracing earth formations surrounding a wellbore |
US6896058B2 (en) * | 2002-10-22 | 2005-05-24 | Halliburton Energy Services, Inc. | Methods of introducing treating fluids into subterranean producing zones |
-
2012
- 2012-04-05 WO PCT/US2012/032376 patent/WO2013151551A1/en active Application Filing
- 2012-04-05 US US14/236,022 patent/US20140224494A1/en not_active Abandoned
- 2012-04-05 MX MX2014002111A patent/MX2014002111A/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3865190A (en) * | 1973-07-09 | 1975-02-11 | Texaco Inc | Hydraulic fracturing method |
US5873413A (en) * | 1997-08-18 | 1999-02-23 | Halliburton Energy Services, Inc. | Methods of modifying subterranean strata properties |
US7160844B2 (en) * | 2003-11-04 | 2007-01-09 | Global Synfrac Inc. | Proppants and their manufacture |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016140656A1 (en) * | 2015-03-04 | 2016-09-09 | Halliburton Energy Services, Inc. | Wellbore additives that include liquid-infiltrated porous silica |
GB2550516A (en) * | 2015-03-04 | 2017-11-22 | Halliburton Energy Services Inc | Wellbore additives that include liquid-infiltrated porous silica |
US10329472B2 (en) | 2015-03-04 | 2019-06-25 | Halliburton Energy Services, Inc. | Wellbore additives that include liquid-infiltrated porous silica |
GB2550516B (en) * | 2015-03-04 | 2021-12-01 | Halliburton Energy Services Inc | Wellbore additives that include liquid-infiltrated porous silica |
Also Published As
Publication number | Publication date |
---|---|
WO2013151551A1 (en) | 2013-10-10 |
MX2014002111A (en) | 2014-04-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9970265B2 (en) | Multi-functional surfactant complexes for use in subterranean formations | |
US9010430B2 (en) | Method of using shaped compressed pellets in treating a well | |
US20130312974A1 (en) | Controlling hydrogen sulfide production in oilfield operations | |
MX2010010615A (en) | Method of perforating for effective sand plug placement in horizontal wells. | |
US9976073B2 (en) | Methods and systems for controllably generating heat and/or nitrogen gas in subterranean and pipeline operations | |
US20140190692A1 (en) | Production-treating chemicals added to polymer slurries used in treatment of oil and gas wells | |
NO163976B (en) | PROCEDURE TE FOR HYDRAULIC FRACTURING OF A UNDORMATION. | |
Lafollette | Key Considerations for Hydraulic Fracturing of Gas Shales | |
CA2688987A1 (en) | System, method, and apparatus for post-fracture treatment | |
US10458220B2 (en) | System and method for facilitating subterranean hydrocarbon extraction utilizing electrochemical reactions with metals | |
CN105683330B (en) | The carbonate based sizing pressure break using solid acid for unconventional reservoir | |
US20160032175A1 (en) | Method For Coating A Well Treatment Chemical | |
US20160194553A1 (en) | Well Treatment Solid Chemical | |
NO20180342A1 (en) | Carrier-free treatment particulates for use in subterranean formations | |
US20180265765A1 (en) | Encapsulated scale inhibitor for downhole applications in subterranean formations | |
US10005954B2 (en) | Plant extracted oil based polyepoxy resin composition for improved performance of natural sand placed in fracture | |
US9982187B2 (en) | Delayed delivery of chemicals in a wellbore | |
NL2021644B1 (en) | Self propping surfactant for well stimulation | |
RU2525413C2 (en) | Method of production of oils, gas condensates and gases from deposits and provision of continuous operation of production and injection wells | |
US20140224494A1 (en) | Solid Chemical Well Treatment | |
US20070131423A1 (en) | Method of extracting hydrocarbons | |
US20160137909A1 (en) | System To Efficiently Deliver High Pour Point Chemicals To Oil Well Formations | |
RU2496970C1 (en) | Method for waterproofing work in fractured manifolds | |
CA2998318A1 (en) | Gel hydration units with pneumatic and mechanical systems to reduce channeling of viscous fluid | |
CA2951289C (en) | Multi-functional surfactant complexes for use in subterranean formations |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ENERGY & ENVIRONMENTAL SERVICES, INC., OKLAHOMA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SMITH, MELVIN B.;REEL/FRAME:032088/0357 Effective date: 20131017 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |