US3777819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cementing well bore casing
Assignee: MUSTANG OIL TOOLS Inc
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Filing: 1972-05-08
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Granted: 1973-12-11
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Expires: 1992-05-08
Abstract
Abstract There is disclosed a method and apparatus for cementing a tubular string in a well bore wherein the tubular string is simultaneously rotated and reciprocated while passing a cementing slurry into the well bore.
Inventors
- 👤 C Delano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:10
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/14; E21B19/00; E21B3/00; E21B3/02; E21B33/02; E21B33/03; E21B33/04; E21B33/0415
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
138 words
A method of cementing a tubular string, comprised of a plurality of threadably connected joints having thereon means for frictionally engaging a bore hole wall, in a well bore from the floor of a rig with a tool including a hydraulic torque applier and means for controlling the applier for varying the torque output of the tool, the method comprising the steps of rotating the tubular string with the tool; manipulating the control means for controlling the torque output of the tool so that the torque output thereof can never exceed the strength of the joint couplings; reciprocating the string up and down for a stroke of at least ten feet while rotating the string and maintaining the tool above the floor; and passing a cementing slurry into the well bore during rotation and reciprocation of the string.
Claim 2
Independent Claim
138 words
A method of cementing a tubular string, comprised of a plurality of threadably connected joints having thereon means for frictionally engaging a bore hole wall, in a well bore from the floor of a rig with a tool including a hydraulic torque applier and means for controlling the applier for varying the torque output of the tool, the method comprising the steps of rotating the tubular string with the tool; manipulating the control means for controlling the torque output of the tool so that the torque output thereof can never exceed the strength of the joint couplings; reciprocating the string up and down for a stroke of at least ten feet while rotating the string and maintaining the tool above the floor; and passing a cementing slurry into the well bore during rotation and reciprocation of the string.
Claim 3
Dependent Claim
31 words
The method of claim 1 wherein the reciprocating step comprises alternately pulling upwardly on the string while rotating the same and allowing the string to move downwardly while rotating the same.
Claim 4
Dependent Claim
25 words
The method of claim 1 further comprising the steps of simultaneously rotating the reciprocating the string after delivery of cementing slurry into the well bore.
Claim 5
Independent Claim
172 words
A method of cementing a tubular string, comprised of a plurality of threadably connected joints having thereon means for frictionally engaging a bore hole wall, in a well bore from the floor of a drilling rig spaced above an underlying surface, the method comprising the steps of running the tubular string through a table on the rig into the well bore; attaching onto the upper end of the string a tool including a hydraulic torque applier for rotating the string during reciprocation thereof and means for controlling the hydraulic torque applier for varying the torque output of the tool; rotating the tubular string with the tools; manipulating the control means for controlling the torque output of the tool so that the torque output thereof can never exceed 6,000 foot pounds; reciprocating the tubular string up and down for a stroke sufficient to reciprocate the lower string end while rotating the string, the lowermost point of travel of the tool being above the table; and passing a cementing slurry into the well bore.
Claim 6
Independent Claim
172 words
A method of cementing a tubular string, comprised of a plurality of threadably connected joints having thereon means for frictionally engaging a bore hole wall, in a well bore from the floor of a drilling rig spaced above an underlying surface, the method comprising the steps of running the tubular string through a table on the rig into the well bore; attaching onto the upper end of the string a tool including a hydraulic torque applier for rotating the string during reciprocation thereof and means for controlling the hydraulic torque applier for varying the torque output of the tool; rotating the tubular string with the tools; manipulating the control means for controlling the torque output of the tool so that the torque output thereof can never exceed 6,000 foot pounds; reciprocating the tubular string up and down for a stroke sufficient to reciprocate the lower string end while rotating the string, the lowermost point of travel of the tool being above the table; and passing a cementing slurry into the well bore.
Claim 7
Independent Claim
56 words
A method of cementing a tubular string in a larger bore hole comprising the steps of delivering cementing slurry into a bottom part of the annulus between the string and the well bore; placing the string in compression; and rotating the tubular string and maintaining the same in compression while cementing slurry is in the annulus.
Claim 8
Independent Claim
56 words
A method of cementing a tubular string in a larger bore hole comprising the steps of delivering cementing slurry into a bottom part of the annulus between the string and the well bore; placing the string in compression; and rotating the tubular string and maintaining the same in compression while cementing slurry is in the annulus.
Claim 9
Dependent Claim
90 words
The method of claim 5 further comprising the step of installing a swivel in the tubular string adjacent the lower end thereof and wherein the placing step comprises the steps of suspending the string in a well bore with hoist means; manipulating the hoist means to place the lower string end on the bottom of the well bore; and manipulating the hoist means to insufficiently support the string therefrom thereby immobilizing the lower end of the string below the swivel and Placing the string off center in the well bore.
Claim 10
Independent Claim
136 words
A method of cementing a tubular string, comprised of a plurality of threadably connected joints having thereon means for frictionally engaging a bore hole wall, in a well bore from the floor of a rig with a tool including a torque applier and means for controlling the torque applier for varying the torque output of the tool, the method comprising the steps of running the tubular string into the well bore; placing a cementing slurry into the well bore; rotating the tubular string with the tool; manipulating the control means for controlling the torque output of the tool so that the torque output thereof can never exceed 6,000 foot pounds; and reciprocating the string up and down for a stroke of at least ten feet while rotating the string and maintaining the tool above the floor.
Claim 11
Independent Claim
136 words
A method of cementing a tubular string, comprised of a plurality of threadably connected joints having thereon means for frictionally engaging a bore hole wall, in a well bore from the floor of a rig with a tool including a torque applier and means for controlling the torque applier for varying the torque output of the tool, the method comprising the steps of running the tubular string into the well bore; placing a cementing slurry into the well bore; rotating the tubular string with the tool; manipulating the control means for controlling the torque output of the tool so that the torque output thereof can never exceed 6,000 foot pounds; and reciprocating the string up and down for a stroke of at least ten feet while rotating the string and maintaining the tool above the floor.
Claim 12
Independent Claim
87 words
A method of cementing a tubular string in a well bore from the floor of a rig with a tool comprising the steps of installing a swivel in the tubular string adjacent the lower end thereof; running the tubular string into the well bore; immobilizing the lower end of the string below the swivel; rotating the tubular string with the tool; passing a cementing slurry into the well bore; and rotating the upper end of the string after the delivery of cementing slurry into the well bore.
Claim 13
Independent Claim
87 words
A method of cementing a tubular string in a well bore from the floor of a rig with a tool comprising the steps of installing a swivel in the tubular string adjacent the lower end thereof; running the tubular string into the well bore; immobilizing the lower end of the string below the swivel; rotating the tubular string with the tool; passing a cementing slurry into the well bore; and rotating the upper end of the string after the delivery of cementing slurry into the well bore.
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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |