Patent US3746091A successfully refreshed from Google Patents.
US3746091A
Expired / Lapsed
US
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Conduit liner for wellbore
Assignee: Teledyne Merla
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Filing: 1971-07-26
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Granted: 1973-07-17
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Expires: 1991-07-26
Abstract
Abstract A liner for emplacement in a conduit in a well penetrating subterranean formations characterized by an annular body portion having substantially cylindrical interior and exterior surfaces that are at least partially coextensive and having an outside diameter less than the inside diameter of the conduit; the liner having a metallurgical composition and dimensions for being expanded to conformingly engage the conduit with a tight frictional engagement. The liner is adapted for use with a wireline setting tool without the necessity for a separate anchor or support. Also disclosed are the method of emplacing the liner in the conduit, specific metallurgical compositions, and specific embodiments and combinations.
Inventors
- 👤 H Owen
- 👤 W Rosenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:04
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/10; E21B43/103; E21B43/105; E21B23/00; E21B23/04; E21B23/0414
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
60 words
The liner of claim 1 wherein said commercially pure iron has no more than one percent by weight of alloy constituents and has a tensile strength in the range of 39,000-43,000 pounds per square inch; and said body portion has a thickness sufficient to effect a wall after expansion capable of withstanding the pressure normally within or outside said conduit.
Claim 2
Dependent Claim
67 words
The liner of claim 1 wherein said commercially pure iron has a ladle analysis of alloy constituents as follows: a total concentration of no more than 0.1 percent by weight of carbon, manganese, phosphorus, sulfur and silicon with no more than 0.01 percent by weight of phosphorus and no more than 0.03 percent by weight of sulfur; and no more than 0.15 percent by weight of copper.
Claim 3
Dependent Claim
46 words
The liner of claim 3 wherein said commercially pure iron has a typical analysis in sheet form about as follows; the concentrations of the elements as the alloy constituents being given in percenT by weight: carbon 0.015, manganese 0.028, phosphorus 0.005, sulfur 0.025, and silicon 0.003.
Claim 4
Dependent Claim
144 words
A combination liner and element for a conduit in a well penetrating subterranean formations and having a given diameter comprising: a. an annular body portion having substantially cylindrical interior and exterior surfaces that are at least partially coextensive, having an outside diameter less than said given diameter, having sufficient malleability for and adapted for being expanded to conformingly engage said conduit, having a thickness sufficient to effect a wall after expansion capable of withstanding the pressures normally encountered within or outside said conduit and having a modulus of elasticity in compression sufficient to retain tight frictional engagement with said conduit after expansion thereagainst; and b. a connector means connected at its one end with said body portion and at its other end with a terminal element; said connector means having an expansible portion for retaining a sealing interconnection after expansion of said body portion.
Claim 5
Dependent Claim
65 words
The combination of claim 5 wherein said terminal element is at least a section of a production liner whereby said section of said production liner can be emplaced at a given location in said conduit by expansion of said body portion into frictional and sealing engagement with said conduit, and said production liner will resist being displaced upwardly by pressure or downwardly by its weight.
Claim 6
Dependent Claim
67 words
The combination of claim 5 wherein said terminal element is a bull plug seal means and wherein said bull plug seal means can be emplaced at a given location in said conduit by expansion of said annular body portion into frictional and sealing engagement with said conduit and said bull plug seal means will resist being displaced upwardly or downwardly by force of a pressure acting thereon.
Claim 7
Dependent Claim
91 words
The combination of claim 5 wherein said terminal element comprises a seal sub having a longitudinally extending internal sealing surface defining a bore for receiving in sealing relationship a large bore packer including single bore packers such as seal nipples; whereby said seal sub can be emplaced at a given location in said conduit by expansion of said annular body portion into frictional and sealing engagement with said conduit and said seal sub will resist being displaced upwardly or downwardly by a weight and the force of a pressure acting thereon.
Claim 8
Dependent Claim
71 words
The combination of claim 5 wherein said body portion serves as a first liner and said terminal element is a second liner sealingly connected at one end to said connector means via an expansible portion and said connector means includes an elongate sleeve portion, to form a straddle patch for emplacing in said conduit for blocking a communicating passageway between the interior of said conduit and the exterior of said conduit.
Claim 9
Dependent Claim
66 words
The combination of claim 9 wherein there are two expansible portions, one said expansible portion being sealingly connected with one end of said first liner and the other said expansible portion being sealingly connected with one end of said second liner; and said elongate sleeve portion is connected with said two expansible portions; said elongate sleeve portion comprising a plurality of sections that are joined together.
Claim 10
Dependent Claim
42 words
The combination of claim 5 wherein said body portion is formed of a highly refined commercially pure iron having yield strength in the range of 15,000-30,000 pounds per square inch and an elongation in the range of 37-41 percent in 2 inches.
Claim 11
Dependent Claim
35 words
The combination of claim 11 wherein said commercially pure iron has no more than 1 percent by weight of alloy constituents and has a tensile strength in the range of 39,000-43,000 pounds per square inch.
Claim 12
Dependent Claim
67 words
The combination of claim 11 wherein said commercially pure iron has a ladle analysis of alloy constituents as follows: a total concentration of no more than 0.1 percent by weight of caRbon, manganese, phosphorus, sulfur and silicon, with no more than 0.01 percent by weight of phosphorus and no more than 0.03 percent by weight of sulfur; and no more than 0.15 percent by weight of copper.
Claim 13
Dependent Claim
46 words
The combination of claim 13 wherein said commercially pure iron has a typical analysis in sheet form about as follows; the concentrations of the elements as the alloy constituents being given in percent by weight; carbon 0.015, manganese 0.028, phosphorus 0.005, sulfur 0.025, and silicon 0.003.
Claim 14
Dependent Claim
121 words
In a well penetrating subterranean formations, the combination comprising: a. a conduit traversing a portion of the length of said well; b. an expanded annular liner frictionally and sealingly engaging a small portion of said conduit with sufficient frictional engagement to resist being displaced upwardly or downwardly in said well; said annular liner having a body portion that is formed of a highly refined commercially pure iron having a yield strength in the range of 15,000-30,000 pounds per square inch and an elongation in the range of 37-41 percent in 2 inches; and c. a connector means having an expanded expansible portion and sealingly connected at one end with said liner and connected at the other end with a terminal element.
Claim 15
Dependent Claim
35 words
The combination of claim 15 wherein said commercially pure iron has no more than 1 percent by weight of alloy constituents and has a tensile strength in the range of 39,000-43,000 pounds per square inch.
Claim 16
Dependent Claim
67 words
The combination of claim 15 wherein said commercially pure iron has a ladle analysis of alloy constituents as follows: a total concentration of no more than 0.1 percent by weight of carbon, manganese, phosphorus, sulfur and silicon with no more than 0.01 percent by weight of phosphorus and no more than 0.03 percent by weight of sulfur; and no more than 0.15 percent by weight of copper.
Claim 17
Dependent Claim
46 words
The combination of claim 17 wherein said commercially pure iron has a typical analysis in sheet form about as follows; the concentrations of the elements as the alloy constituents being given in percent by weight; carbon 0.015, manganese 0.028, phosphorus 0.005, sulfur 0.025, and silicon 0.003.
Claim 18
Dependent Claim
65 words
The combination of claim 15 wherein said terminal element comprises a seal sub having a longitudinally extending internal sealing surface defining a bore and receiving in sealing relationship a large bore packer; and said liner sealingly and frictionally engages said conduit with sufficient force to support the weight of said packer in said well and to resist being displaced by pressure acting on said liner.
Claim 19
Dependent Claim
20 words
The combination of claim 19 wherein said large bore packer comprises a body having a longitudinally extending aperture penetrating therethrough.
Claim 20
Dependent Claim
19 words
The combination of claim 20 wherein said large bore packer body has a plurality of apertures extending longitudinally therethrough.
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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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |