Patent US3814180A successfully refreshed from Google Patents.
US3814180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well fishing apparatus
Assignee: Cities Service Oil Co
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Filing: 1972-08-31
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Granted: 1974-06-04
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Expires: 1992-08-31
Abstract
Abstract A fishing tool which can be used for dislodging and collecting junk from the walls of a well bore. The tool can be located in a drilling string above a bit, and streams of drilling fluid are jetted outwardly against the wall of the bore to dislodge junk which resides in or upon the wall. A junk basket is located on the tool above the bit, and junk is thus basketed before it falls to the bottom of the hole.
Inventors
- 👤 D Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:24
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/14; E21B21/00; E21B21/10; E21B21/103; E21B31/00; E21B31/03; E21B31/08; E21B41/00; E21B41/0078
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
152 words
A well fishing tool comprising: a. a tubular body section threadably connectible at the upper end to a drilling string, b. a longitudinal fluid passageway in the body section of the tool leading from the upper end thereof, c. a fluid channel which extends through the side wall of the body section from the passageway therein to the outside, and d. a junk basket which surrounds the tubular body section of the tool and including a bucket with a bottom that is contiguous with said body section, said bucket comprising an attached flexible funnel which leads into the upper end of the bucket and which has an open upper rim of larger diameter than the body section of the tool that the bucket surrounds, and whereupon lowering the fishing tool into a bore hole the funnel of the bucket becomes compressed and is thus caused to fit tightly into the bore hole.
Claim 2
Dependent Claim
152 words
A well fishing tool comprising: a. a tubular body section threadably connectible at the upper end to a drilling string, b. a longitudinal fluid passageway in the body section of the tool leading from the upper end thereof, c. a fluid channel which extends through the side wall of the body section from the passageway therein to the outside, and d. a junk basket which surrounds the tubular body section of the tool and including a bucket with a bottom that is contiguous with said body section, said bucket comprising an attached flexible funnel which leads into the upper end of the bucket and which has an open upper rim of larger diameter than the body section of the tool that the bucket surrounds, and whereupon lowering the fishing tool into a bore hole the funnel of the bucket becomes compressed and is thus caused to fit tightly into the bore hole.
Claim 3
Dependent Claim
19 words
Apparatus as in claim 1 wherein the portion of the body section surrounded by the basket is inwardly tapered.
Claim 4
Dependent Claim
22 words
Apparatus as in claim 1 wherein the lower end of the body section is threadably connectible to members of a drilling string.
Claim 5
Dependent Claim
21 words
Apparatus as in claim 1 wherein the junk basket is attached to the tool below the channel through the wall thereof.
Claim 6
Dependent Claim
23 words
Apparatus as in claim 1 and further comprising at least one other channel through the wall of the body section of the tool.
Claim 7
Dependent Claim
29 words
Apparatus as in claim 5 wherein at least one of the channels projects at an inclined angle with respect to the wall of the body section of the tool.
Claim 8
Dependent Claim
10 words
Apparatus as in claim 1 wherein the funnel is rubber.
Claim 9
Dependent Claim
11 words
Apparatus as in claim 7 wherein the funnel is reinforced rubber.
Claim 10
Dependent Claim
34 words
Apparatus as in claim 7 wherein the funnel is provided with metal stays for urging said upper rim of the funnel against the wall of a bore hole when the funnel is compressed therein.
Claim 11
Dependent Claim
24 words
Apparatus as in claim 1 and including a drilling string to which the upper end of the body section of the tool is attached.
Claim 12
Dependent Claim
19 words
Apparatus as in claim 10 wherein the body section is attached to the lower end of a drilling string.
Claim 13
Dependent Claim
26 words
Apparatus as in claim 11 and further including a member of a drilling string attached to the lower end of the body section of the tool.
Claim 14
Dependent Claim
76 words
Apparatus as in claim 1 wherein the fluid passageway extends through the body section of the tool and further comprising: a. a previously set operable sleeve member inside the body section which covers the channel through the wall of the body section when set and which uncovers the channel when operated, and b. a seal surface in said sleeve member which receives a matching seal surface on a flow obstructing member emplaced in said sleeve member.
Claim 15
Dependent Claim
44 words
Apparatus as in claim 13 and further comprising at least one other channel which extends through the side wall of the body section of the tool, said other channel also being normally covered by the operable member and uncovered upon operation of the member.
Claim 16
Dependent Claim
25 words
Apparatus as in claim 14 wherein at least one of the channels projects at an inclined angle with respect to the wall of the tool.
Claim 17
Dependent Claim
18 words
Apparatus as in claim 13 wherein the flow obstructing member is a plunger emplaced in said sleeve member.
Claim 18
Dependent Claim
25 words
Apparatus as in claim 16 wherein the plunger has an outward projection with a sealing surface which abuts the seal surface of said sleeve member.
Claim 19
Dependent Claim
11 words
Apparatus as in claim 16 wherein the plunger is gravity actuated.
Claim 20
Dependent Claim
16 words
Apparatus as in claim 18 and further comprising means for retrieving the plunger by wire line.
Claim 21
Dependent Claim
28 words
Apparatus as in claim 19 and further comprising a snap ring which couples the plunger and the sleeve member when the plunger is employed in the sleeve member.
Claim 22
Dependent Claim
31 words
Apparatus as in claim 13 wherein the operable sleeve member is slidable in the passageway both over and beyond the opening of the channel in the body section of the tool.
Claim 23
Dependent Claim
27 words
Apparatus as in claim 21 and further comprising an internal recess in the body section of the tool and the sleeve member is slidable in the recess.
Claim 24
Dependent Claim
32 words
Apparatus as in claim 21 and including securing means for holding the sleeve member in its previously set position over the channel in the wall of the body section of the tool.
Claim 25
Dependent Claim
25 words
Apparatus as in claim 23 wherein the securing means comprises at least one O-ring fitted into a recess around the outer circumference of the sleeve.
Claim 26
Dependent Claim
22 words
Apparatus as in claim 23 wherein the securing means is a tensioned spring which urges against the sleeve in an axial direction.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |