Patent US3727691A successfully refreshed from Google Patents.
US3727691A
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Method and apparatus for treating subterranean formations
Assignee: ExxonMobil Upstream Research Co
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Filing: 1970-12-16
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Granted: 1973-04-17
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Expires: 1990-12-16
Abstract
Abstract Separate fluids are passed through separate conduits in a wellbore and commingled at a subsurface location to form a single stream which is then passed through a mechanical mixing device. The mechanical mixing device intermixes the two fluids in proportion to their respective volumetric flow rates producing a uniform treating composition which is then forced into contact with the formation to be treated.
Inventors
- 👤 T Muecke
- 👤 F Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:58
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B43/00; E21B43/25
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
64 words
A method for treating a subterranean formation surrounding a wellbore which comprises passing different fluids through separate conduits in the wellbore; commingling said separate fluids at a subsurface location to form a single stream; intermixing the commingled fluids by flowing said single stream through a mechanical mixing device to form a uniform treating composition; and forcing said treating composition into contact with the formation.
Claim 2
Independent Claim
64 words
A method for treating a subterranean formation surrounding a wellbore which comprises passing different fluids through separate conduits in the wellbore; commingling said separate fluids at a subsurface location to form a single stream; intermixing the commingled fluids by flowing said single stream through a mechanical mixing device to form a uniform treating composition; and forcing said treating composition into contact with the formation.
Claim 3
Dependent Claim
23 words
The invention as recited in claim 1 whereiN said intermixing of the commingled fluids is by stream splitting and cross blending flow action.
Claim 4
Dependent Claim
47 words
The invention as recited in claim 1 wherein one of said fluids contains a chemically active material capable of reacting with itself to produce a resinous treating composition, and the other of said fluids contains a catalyst capable of initiating the reaction of said chemically active material.
Claim 5
Dependent Claim
51 words
The invention as recited in claim 3 wherein said chemically active material is a liquid thermosetting resin which, in the presence of said catalyst, reacts to form a solid resin, and wherein the step of forcing the resinous composition in contact with the formation is performed before the reaction is complete.
Claim 6
Dependent Claim
16 words
The invention as recited in claim 4 wherein said liquid thermosetting resin is an epoxy resin.
Claim 7
Dependent Claim
30 words
The invention as recited in claim 4 wherein said thermosetting resin is a furfuryl alcohol and wherein said catalyst is an acid capable of causing said furfuryl alcohol to polymerize.
Claim 8
Dependent Claim
20 words
The invention as recited in claim 1 wherein said fluids contain separate components which coreact to produce the treating composition.
Claim 9
Dependent Claim
59 words
The invention as recited in claim 7 wherein one of said components is a liquid thermosetting resin and wherein the other of said components is a curing agent reactive with said thermosetting resin to produce a solid resinous material, and wherein the step of forcing said composition into contact with the formation is performed before the reaction is complete.
Claim 10
Dependent Claim
15 words
The invention as recited in claim 8 wherein said thermosetting resin is an epoxy resin.
Claim 11
Dependent Claim
37 words
The invention as recited in claim 7 wherein one of said components is a water-soluble aldehyde and the other of said components is a hydroxy aryl compound capable of reacting with the aldehyde to form a resin.
Claim 12
Dependent Claim
18 words
The invention as recited in claim 7 wherein said components are resins capable of reacting to form copolymers.
Claim 13
Dependent Claim
35 words
The invention as recited in claim 7 wherein one of said components is formaldehyde and the other of said components is an ammonium salt capable of reacting with the formaldehyde to produce a free acid.
Claim 14
Dependent Claim
73 words
In a well treating apparatus for use in cased well-bores and having a conduit capable of being lowered in said wellbore, packing means for sealing the casing-conduit annulus, and valve means disposed above said packing means for providing fluid communication between the conduit and the casing-conduit annulus, the improvement comprising a fluid mixing device connected to the lower discharge of said conduit, said mixing device including fluid stream splitting and cross blending means.
Claim 15
Dependent Claim
73 words
In a well treating apparatus for use in cased well-bores and having a conduit capable of being lowered in said wellbore, packing means for sealing the casing-conduit annulus, and valve means disposed above said packing means for providing fluid communication between the conduit and the casing-conduit annulus, the improvement comprising a fluid mixing device connected to the lower discharge of said conduit, said mixing device including fluid stream splitting and cross blending means.
Claim 16
Independent Claim
109 words
An apparatus for intermixing two fluids in a wellbore to produce a formation treating composition which comprises a first conduit in said wellbore having a lower end located proximate said formation; a second conduit in said wellbore connected in fluid communication with said first conduit above said lower end so that fluids flowing through said second conduit discharge into said first conduit; a mixing device connected to the lower end of said first conduit, said mixing device comprising a tube and a plurality of baffles disposed transversely across the interior of said tube, said baffles being configurated to divide and cross blend a fluid stream flowing through said tube.
Claim 17
Independent Claim
109 words
An apparatus for intermixing two fluids in a wellbore to produce a formation treating composition which comprises a first conduit in said wellbore having a lower end located proximate said formation; a second conduit in said wellbore connected in fluid communication with said first conduit above said lower end so that fluids flowing through said second conduit discharge into said first conduit; a mixing device connected to the lower end of said first conduit, said mixing device comprising a tube and a plurality of baffles disposed transversely across the interior of said tube, said baffles being configurated to divide and cross blend a fluid stream flowing through said tube.
Claim 18
Dependent Claim
53 words
The invention as recited in claim 14 wherein said apparatus further comprises a tube concentrically mounted in the lower end of said first conduit and upstream from said mixing device, said tube being adapted to receive and retain liquid separation devices pumped through said first conduit while permitting the passage of fluid therethrough.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |