Patent US3815680A successfully refreshed from Google Patents.
US3815680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for fracturing and propping unconsolidated and dilatant subterranean formations
Assignee: ConocoPhillips Co
•
Filing: 1973-03-08
•
Granted: 1974-06-11
•
Expires: 1993-03-08
Abstract
Abstract An improved method for fracturing and propping unconsolidated and dilatant subterranean formations, the improvement comprising the addition of a tackifying agent to the fracturing fluid.
Inventors
- 👤 Guire L Mc
- 👤 D Sparlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:08
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/267; C; C09; C09K; C09K8/00; C09K8/50; C09K8/502; C09K8/56; C09K8/57; C09K8/575; C09K8/5751; C09K8/5755; C09K8/60; C09K8/62; E21B43/261
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
18 words
The improvement of claim 1 wherein said fluid carrier is water and said tackifier is insoluble in water.
Claim 2
Dependent Claim
22 words
The improvement of claim 1 wherein said fluid carrier is a hydrocarbon liquid and said tackifier is insoluble in said hydrocarbon liquid.
Claim 3
Dependent Claim
12 words
The improvement of claim 1 wherein said tackifier is a thermosetting resin.
Claim 4
Dependent Claim
12 words
The improvement of claim 1 wherein said tackifier is a thermoplastic polymer.
Claim 5
Dependent Claim
10 words
The improvement of claim 1 wherein said tackifier is rubber.
Claim 6
Dependent Claim
10 words
The improvement of claim 1 wherein said tackifier is wax.
Claim 7
Dependent Claim
11 words
The improvement of claim 1 wherein said tackifier is simple syrup.
Claim 8
Dependent Claim
35 words
The improvement of claim 1 wherein said tackifier is selected from the group consisting of phenol formaldehyde resin, furane resin, cellulose resin, styrene-butadiene rubber, reclaimed rubber, modified resins, residual hydrocarbon oils and heavy hydrocarbon oils.
Claim 9
Dependent Claim
32 words
The improvement of claim 1 wherein said propping agent is gravel of a size such that the formation sand cannot penetrate into a pack of the gravel more than three grain diameter.
References Cited (Backward Citations)
US2805721A
Cited
US3070160A
Cited
US3370650A
Cited
US3417819A
Cited
US3531409A
Cited
US3443637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |