US3583487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of gravel packing of well using sealable indicator above well screen
Assignee: Layne and Bowler Co
•
Filing: 1968-09-10
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Granted: 1971-06-08
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Expires: 1988-09-10
Abstract
Abstract An indicator screen for a well completion setting is adapted to be sealed off after gravel packing of the well. Sealing is by a sleeve which slides over the indicator screen upon shearing a pin which holds the sleeve spaced from the screen. An inset resilient sleeve aids in maintaining the seal, as does a pair of annular seals above and below the screen. A snap ring fastener secures the assembly in the sealed condition.
Inventors
- 👤 Harold C Block
- 👤 Theodore W Munhausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:49
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
55 words
In a method according to claim 1, the step of applying an altered condition to the tubing string comprises permitting at least a portion of the weight of the tubing string to bear upon the completion setting to cause fracturing of a shearable pin which holds portions of the tubing string in axially spaced condition.
Claim 2
Dependent Claim
40 words
In a method according to claim 1, the step of collapsing a packer in the annulus between the tubing string and the well casing above the indicator aperture means, such step not occurring prior to sealing the indicator aperture means.
Claim 3
Dependent Claim
36 words
In a method according to claim 3, the packer being collapsed by applying compression to the tubing string by permitting at least a part of the weight of the string to bear upon the completion setting.
Claim 4
Dependent Claim
45 words
In a method according to claim 1, the step including sealing the indicator aperture means comprising applying vertical compression to the tubing string to cause sliding of a portion of the tubing string relative to a surrounding collar portion thereof adjacent the indicator aperture means.
Claim 5
Dependent Claim
31 words
In a method according to claim 5, the step of applying compression comprising permitting at least a portion of the weight of the tubing string to rest on the completion setting.
Claim 6
Dependent Claim
33 words
In a method according to claim 6, the step of sealing including fracturing a shearable pin which holds portions of the tubing string adjacent the indicator aperture means in an axially spaced condition.
Claim 7
Dependent Claim
206 words
In a method or completing a well of the type provided with an elongated tubular screen located in the producing formation of the well and connected to the well head by a tubing string, and provided with indicator aperture means in the tubing string spaced substantially above the tubular screen, the steps of: circulating gravel and a carrier liquid into the well through the annulus between the walls of the well and the tubing string to pack gravel in the well cavity between the tubular screen and a perforated casing, the carrier liquid being withdrawn from the tubing string after filtering through the tubular screen and the indicator operative means, detecting pressure applied to the carrier liquid and gravel to circulate it into the well, terminating the circulation of carrieR liquid and gravel upon an increase in the pressure needed to circulate the liquid and gravel, this increase in pressure occurring when the gravel reaches the indicator aperture means, a prior pressure increase having occurred when the gravel reached the top of the tubular screen, and applying to the tubing string an altered condition to cause sealing of the indicator aperture means to prevent entry of liquid into the tubing string at said aperture means thereafter.
References Cited (Backward Citations)
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US2173119A
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US2337429A
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US2365639A
Cited
US3173486A
Cited
US3421586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |