Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
151 words
In a test valve assmebly adapted to be lowered on a tubular string between upper and lower tubular sections into position within a blowout preventer stack at the upper end of a bore of a well, the improvement comprising: a housing having first and second fluid flow passages therethrough; a valve member between said flow passages and shiftable in said housing to open position to communicate said flow passages during selective incremental testing of said well and manipulatable in said housing to closed position to isolate said flow passages prior to and subsequent to selective incremental testing of said well; means responsive to mechanical manipulation of said tubular string for shifting said valve member between closed and open positions; and clutch means whereby said upper tubular section may be selectively rotationally engaged with said lower tubular section during testing of said well and when said valve member is in open position.
Claim 2
Dependent Claim
151 words
In a test valve assmebly adapted to be lowered on a tubular string between upper and lower tubular sections into position within a blowout preventer stack at the upper end of a bore of a well, the improvement comprising: a housing having first and second fluid flow passages therethrough; a valve member between said flow passages and shiftable in said housing to open position to communicate said flow passages during selective incremental testing of said well and manipulatable in said housing to closed position to isolate said flow passages prior to and subsequent to selective incremental testing of said well; means responsive to mechanical manipulation of said tubular string for shifting said valve member between closed and open positions; and clutch means whereby said upper tubular section may be selectively rotationally engaged with said lower tubular section during testing of said well and when said valve member is in open position.
Claim 3
Dependent Claim
134 words
In a test valve assembly adapted to be lowered on a tubular string between upper and lower tubular sections into position within a blowout preventer stack at the upper end of a bore of a well, the improvement comprising: a housing having first and second fluid flow passages therethrough; a valve member between said flow passages and shiftable in said housing to open position to communicate said flow passages during selective incremental testing of said well and manipulatable in said housing to closed position to isolate said flow passages prior to and subsequent to selective incremental testing of said well; and means responsive to mechanical manipulation of said tubular string for selective latching engagement of said valve assembly with said upper tubular section and for shifting said valve member between closed and open positions.
Claim 4
Dependent Claim
134 words
In a test valve assembly adapted to be lowered on a tubular string between upper and lower tubular sections into position within a blowout preventer stack at the upper end of a bore of a well, the improvement comprising: a housing having first and second fluid flow passages therethrough; a valve member between said flow passages and shiftable in said housing to open position to communicate said flow passages during selective incremental testing of said well and manipulatable in said housing to closed position to isolate said flow passages prior to and subsequent to selective incremental testing of said well; and means responsive to mechanical manipulation of said tubular string for selective latching engagement of said valve assembly with said upper tubular section and for shifting said valve member between closed and open positions.
Claim 5
Dependent Claim
36 words
The apparatus of claim 2 wherein said means responsive to mechanical manipulation of said tubular string is moveable in a first direction to a first position to latch said valve assembly with said upper tubular section.
Claim 6
Dependent Claim
46 words
The apparatus of claim 2 wherein said means responsive to mechanical manipulation of said tubular string is moveable in a first direction to a first position to latch said valve assembly with said upper tubular section without manipulating said valve member between closed and open positions.
Claim 7
Dependent Claim
37 words
The apparatus of claim 2 wherein said means responsive to mechanical manipulation of said tubular string is moveable in a first longitudinal direction to a first position to latch said valve assembly with said upper tubular section.
Claim 8
Dependent Claim
47 words
The apparatus of claim 2 wherein said means responsive to mechanical manipulation of said tubular string is moveable in a first longitudinal direction to a first position to latch said valve assembly with said upper tubular section without manipulating said valve member between closed and open positions.
Claim 9
Dependent Claim
76 words
The apparatus of claim 2 wherein said means responsive to mechanical manipulation of said tubular string is moveable in a first direction to a first position to latch said valve assembly with said upper tubular section without manipulating said valve member between closed and open positions, and is manipulatable in at least a second direction and other than in said first direction to a second position to manipulate said valve member between closed and open positions.
Claim 10
Dependent Claim
66 words
The apparatus of claim 2 wherein said means responsive to mechanical manipulation of said tubular string is moveable in a first longitudinal direction to a first position to latch said valve assembly with said upper tubular section and is manipulatable in at least a second direction other than in said first direction to a second position to manipulate said valve member between closed and open positions.
Claim 11
Dependent Claim
63 words
The apparatus of claim 2 wherein said means responsive to mechanical manipulation of said tubular string is moveable in a first longitudinal direction to a first position to latch said valve assembly with said upper tubular section and is manipulatable in at least one of longitudinal and rotational directions to a second position to manipulate said valve member between closed and open positions.
Claim 12
Dependent Claim
73 words
The apparatus of claim 2 wherein said means responsive to mechanical manipulation of said tubular string is moveable in a first longitudinal direction to a first position to latch said valve assembly with said upper tubular section without manipulating said valve member between closed and open positions and is manipulatable in at least one of longitudinal and rotational directions to a second position to manipulate said valve member between closed and open positions.
Claim 13
Independent Claim
54 words
The apparatus of claims 1 or 2 wherein said means responsive to mechanical manipulation comprises: a stab-in assembly; flexible collet means carried on one of said housing and said stab-in assembly; and collet engaging means selectively interengageable with said flexible collet means and carried on the other of said housing and said stab-in assmebly.
Claim 14
Independent Claim
123 words
The apparatus of claims 1 or 2 wherein said means responsive to mechanical manipulation comprises: a stab-in assembly; flexible collet means carried on one of said housing and said stab-in assembly; collet engaging means selectively interengageable with said flexible collet means and carried on the other of said housing and said stab-in assembly; and valve yoke means manipulatably engageable with said valve member and responsive to mechanical manipulation of said tubular string to shift said valve member between each of closed and open positions, said collet means and said collet engaging means being interengageable a first finite distance whereby said yoke means does not manipulate said valve member from one of closed and open positions to the other of closed and open positions.
Claim 15
Independent Claim
159 words
The apparatus of claims 1 or 2 wherein said means responsive to mechanical manipulation comprises: a stab-in assembly; flexible collet means carried on one of said housing and said stab-in assembly; collet engaging means selectively interengageable with said flexible collet means and carried on the other of said housing and said stab-in assembly; and valve yoke means manipulatably engageable with said valve member and responsive to mechanical manipulation of said tubular string to shift said valve member between each of closed and open positions, said collet means and said collet engaging means being interengageable a first finite distance whereby said yoke does not manipulate said valve member from one of closed and open positions to the other of closed and open positions, said collet means and said collet engaging means being interengageable a second finite distance whereby said yoke means manipulates said valve member to one of closed and open positions from the other of closed and open positions.
Claim 16
Dependent Claim
192 words
In a test valve assembly adapted to be lowered on a tubular string between upper and lower tubular sections into position within a blowout preventer stack at the upper end of a bore of a well, said well having a flow conduit therethrough for transmission of fluid to isolate and kill said well, the improvement comprising: a housing having first and second fluid flow passages therethrough; a valve member between said flow passages and shiftable in said housing to open position to communicate said flow passages during selective incremental testing of said well and manipulatable in said housing to closed positions to isolate said flow passages prior to and subsequent to selective incremental testing of said well; means responsive to mechanical manipulation of said tubular string for selective latching engagement of said valve assembly with said upper tubular section and for shifting said valve member between closed and open positions; and auxiliary unlatching and valve member closing means comprising longitudinally shiftable piston means responsive to pressure transmitted through said flow conduit to manipulate said valve member from open to closed position and for unlatching of said valve assembly from said tubular string.
Claim 17
Dependent Claim
192 words
In a test valve assembly adapted to be lowered on a tubular string between upper and lower tubular sections into position within a blowout preventer stack at the upper end of a bore of a well, said well having a flow conduit therethrough for transmission of fluid to isolate and kill said well, the improvement comprising: a housing having first and second fluid flow passages therethrough; a valve member between said flow passages and shiftable in said housing to open position to communicate said flow passages during selective incremental testing of said well and manipulatable in said housing to closed positions to isolate said flow passages prior to and subsequent to selective incremental testing of said well; means responsive to mechanical manipulation of said tubular string for selective latching engagement of said valve assembly with said upper tubular section and for shifting said valve member between closed and open positions; and auxiliary unlatching and valve member closing means comprising longitudinally shiftable piston means responsive to pressure transmitted through said flow conduit to manipulate said valve member from open to closed position and for unlatching of said valve assembly from said tubular string.
Claim 18
Dependent Claim
36 words
The apparatus of claim 14 wherein said means responsive to mechanical manipulation of said tubular string is moveable in a first direction to a first position to latch said valve assembly with said upper tubular section.
Claim 19
Dependent Claim
46 words
The apparatus of claim 14 wherein said means responsive to mechanical manipulation of said tubular string is moveable in a first direction to a first position to latch said valve assembly with said upper tubular section without manipulating said valve member between closed and open positions.
Claim 20
Dependent Claim
37 words
The apparatus of claim 14 wherein said means responsive to mechanical manipulation of said tubular string is moveable in a first longitudinal direction to a first position to latch said valve assembly with said upper tubular section.
Claim 21
Dependent Claim
47 words
The apparatus of claim 14 wherein said means responsive to mechanical manipulation of said tubular string is moveable in a first longitudinal direction to a first position to latch said valve assembly with said upper tubular section without manipulating said valve member between closed and open positions.
Claim 22
Dependent Claim
70 words
The apparatus of claim 14 wherein said means responsive to mechanical manipulation of said tubular string is moveable in a first longitudinal direction to a first position to latch said valve assembly with said upper tubular section without manipulating said valve member between closed and open positions and is manipulatable in at least a second direction to a second position to manipulate said valve member between closed and open positions.
Claim 23
Dependent Claim
63 words
The apparatus of claim 14 wherein said means responsive to mechanical manipulation of said tubular string is moveable in a first longitudinal direction to a first position to latch said valve assembly with said upper tubular section and is manipulatable in at least one of longitudinal and rotational directions to a second position to manipulate said valve member between closed and open positions.
Claim 24
Independent Claim
184 words
The apparatus of claims 1 or 2 wherein said means responsive to mechanical manipulation comprises: a stab-in assembly; flexible collet means carried on one of said housing and said stab-in assembly; collet engaging means selectively interengageable with said flexible collet means and carried on the other of said housing and said stab-in assembly; and valve yoke means manipulatably engageable with said valve member and responsive to mechanical manipulation of said tubular string to shift said valve member, said collet means and said collet engaging means being interengageable a first finite distance whereby said yoke does not manipulate said valve member from one of closed and open positions to the other of said closed and open positions, said collet means and said collet engaging means being longitudinally moveable as a unit a second finite distance such that said yoke means manipulates said valve member to one of closed and open positions from the other of closed and open positions, said stab-in assembly being thereafter manipulatable in at least one of longitudinal and rotational directions, whereby the stab-in assembly and the housing may be completely interlatched.
Claim 25
Dependent Claim
155 words
In a test valve assembly adapted to be lowered on a tubular string between upper and lower tubular sections into position within a blowout preventer stack at the upper end of a bore of a well, the improvement comprising: a housing having first and second fluid flow passages therethrough; a valve member between said flow passages and shiftable in said housing to open position to communicate said flow passages during selective incremental testing of said well and manipulatable in said housing to closed position to isolate said flow passages prior to and subsequent to selective incremental testing of said well; means responsive to each of longitudinal and rotational manipulation of said tubular string for shifting said valve member between closed and open positions; and clutch means whereby said upper tubular section may be selectively rotationally engaged with said lower tubular section during testing of said well and when said valve member is in open position.
Claim 26
Dependent Claim
155 words
In a test valve assembly adapted to be lowered on a tubular string between upper and lower tubular sections into position within a blowout preventer stack at the upper end of a bore of a well, the improvement comprising: a housing having first and second fluid flow passages therethrough; a valve member between said flow passages and shiftable in said housing to open position to communicate said flow passages during selective incremental testing of said well and manipulatable in said housing to closed position to isolate said flow passages prior to and subsequent to selective incremental testing of said well; means responsive to each of longitudinal and rotational manipulation of said tubular string for shifting said valve member between closed and open positions; and clutch means whereby said upper tubular section may be selectively rotationally engaged with said lower tubular section during testing of said well and when said valve member is in open position.
Claim 27
Independent Claim
187 words
The apparatus of claims 1 or 2 wherein said means responsive to mechanical manipulation comprises: a stab-in assembly; flexible collet means carried on one of said housing and said stab-in assembly; collet engaging means selectively interengageable with said flexible collet means and carried on the other of said housing and said stab-in assembly; and valve yoke means manipulatably engageable with said valve member and responsive to mechanical manipulation of said tubular string to shift said valve member between each of closed and open positions, said collet means and said collet engaging means being interengageable a first finite distance in response to mechanical manipulation of said tubular string in a first direction whereby said yoke does not manipulate said valve member from one of closed and open positions to the other of closed and open positions, said collet means and said collet engaging means being interengageable a second finite distance in response to mechanical manipulation of said tubular string in at least a second direction and said yoke means manipulates said valve member to one of closed and open positions from the other of closed and open positions.
Claim 28
Dependent Claim
234 words
In a test valve assembly adapted to be lowered on a tubular string between upper and lower tubular sections into position within a blowout preventer stack at the upper end of a bore of a well, said well having a flow conduit therethrough for transmission of fluid to isolate and kill said well, the improvement comprising: a housing having first and second fluid flow passages therethrough; a valve member between said flow passages and shiftable in said housing to open position to communicate said flow passages during selective incremental testing of said well and manipulatable in said housing to closed position to isolate said flow passages prior to and subsequent to selective incremental testing of said well; means responsive to mechanical manipulation of said tubular string for selective latching engagement of said valve assembly with said upper tubular section and for shifting said valve member between closed and open positions; and auxiliary unlatching and valve member closing means comprising longitudinally shiftable piston means responsive to pressure transmitted through said flow conduit to manipulate said valve member from open to closed position and for unlatching of said valve assembly from said tubular string, said auxiliary unlatching and valve member closing means further comprising lug means selectively carriable by said piston means for auxiliary shifting of said means responsive to mechanical manipulation of said tubular string to shift said valve member from open to closed position.
Claim 29
Dependent Claim
234 words
In a test valve assembly adapted to be lowered on a tubular string between upper and lower tubular sections into position within a blowout preventer stack at the upper end of a bore of a well, said well having a flow conduit therethrough for transmission of fluid to isolate and kill said well, the improvement comprising: a housing having first and second fluid flow passages therethrough; a valve member between said flow passages and shiftable in said housing to open position to communicate said flow passages during selective incremental testing of said well and manipulatable in said housing to closed position to isolate said flow passages prior to and subsequent to selective incremental testing of said well; means responsive to mechanical manipulation of said tubular string for selective latching engagement of said valve assembly with said upper tubular section and for shifting said valve member between closed and open positions; and auxiliary unlatching and valve member closing means comprising longitudinally shiftable piston means responsive to pressure transmitted through said flow conduit to manipulate said valve member from open to closed position and for unlatching of said valve assembly from said tubular string, said auxiliary unlatching and valve member closing means further comprising lug means selectively carriable by said piston means for auxiliary shifting of said means responsive to mechanical manipulation of said tubular string to shift said valve member from open to closed position.
Claim 30
Independent Claim
232 words
A method of operating a test valve assembly adapted to be lowered on a tubular string between upper and lower tubular sections into position within a blowout preventer at the upper end of a bore of a well for selective control of flow of fluid through said tubular string and said test valve assembly prior and subsequent to the testing of said well, comprising the steps of: (a) lowering within said blowout preventer stack and on said tubular string a housing having first and second fluid flow passages therethrough, a valve member between said flow passages and shiftable in said housing to open position to communicate said flow passages during selective incremental testing of said well and manipulatable in said housing to closed position to isolate said flow passages prior to and subsequent to selective incremental testing of said well, means responsive to mechanical manipulation of said tubular string for shifting said valve member between closed and open positions, and clutch means whereby said upper tubular section may be selectively rotationally engaged with said lower tubular section during testing of said well and when said valve member is in open position; (b) and manipulating said tubular string, selectively, in each of longitudinal and rotational directions to manipulate said valve member between open and closed positions to selectively control flow of fluid through said flow passages and to selectively activate said clutch means.
Claim 31
Independent Claim
232 words
A method of operating a test valve assembly adapted to be lowered on a tubular string between upper and lower tubular sections into position within a blowout preventer at the upper end of a bore of a well for selective control of flow of fluid through said tubular string and said test valve assembly prior and subsequent to the testing of said well, comprising the steps of: (a) lowering within said blowout preventer stack and on said tubular string a housing having first and second fluid flow passages therethrough, a valve member between said flow passages and shiftable in said housing to open position to communicate said flow passages during selective incremental testing of said well and manipulatable in said housing to closed position to isolate said flow passages prior to and subsequent to selective incremental testing of said well, means responsive to mechanical manipulation of said tubular string for shifting said valve member between closed and open positions, and clutch means whereby said upper tubular section may be selectively rotationally engaged with said lower tubular section during testing of said well and when said valve member is in open position; (b) and manipulating said tubular string, selectively, in each of longitudinal and rotational directions to manipulate said valve member between open and closed positions to selectively control flow of fluid through said flow passages and to selectively activate said clutch means.
Claim 32
Independent Claim
343 words
A method of manipulating a test valve assembly adapted to be lowered on a tubular string between upper and lower tubular sections into position within a blowout preventer stack at the upper end of a bore of a well, said test valve assembly comprising a housing having first and second fluid flow passages therethrough, a valve member between said flow passages and shiftable in said housing to open position to communicate said flow passages during selective incremental testing of said well and manipulatable in said housing to closed position to isolate said flow passages prior to and subsequent to selective incremental testing of said well, clutch means whereby said upper tubular section may be selectively rotationally engaged with said lower tubular section during testing of said well and when said valve member is in open position, and means responsive to mechanical manipulation of said tubular string for shifting said valve member between closed and open positions, said means responsive to mechanical manipulation comprising: a stab-in assembly; flexible collet means carried on one of said housing and said stab-in assembly; collet engaging means selectively interengageable with said flexible collet means and carried on the other of said housing and said stab-in assembly; and valve yoke means manipulatably engageable with said valve member and responsive to mechanical manipulation of said tubular string to shift said valve member, said method comprising the steps of: (a) manipulating said tubular string in at least a first direction whereby said collet means and said collet engaging means are interengageable a first finite distance and said yoke does not manipulate said valve member from one of closed and open positions to the other of closed and open positions; (b) shifting said tubular string whereby said collet means and said collet engaging means are longitudinally moveable as a unit a second finite distance whereby said yoke means manipulates said valve member to one of closed and open positions; and (c) manipulating said tubular string in at least one longitudinal and rotational directions to completely interlatch said stab-in assembly and said housing.
Claim 33
Independent Claim
343 words
A method of manipulating a test valve assembly adapted to be lowered on a tubular string between upper and lower tubular sections into position within a blowout preventer stack at the upper end of a bore of a well, said test valve assembly comprising a housing having first and second fluid flow passages therethrough, a valve member between said flow passages and shiftable in said housing to open position to communicate said flow passages during selective incremental testing of said well and manipulatable in said housing to closed position to isolate said flow passages prior to and subsequent to selective incremental testing of said well, clutch means whereby said upper tubular section may be selectively rotationally engaged with said lower tubular section during testing of said well and when said valve member is in open position, and means responsive to mechanical manipulation of said tubular string for shifting said valve member between closed and open positions, said means responsive to mechanical manipulation comprising: a stab-in assembly; flexible collet means carried on one of said housing and said stab-in assembly; collet engaging means selectively interengageable with said flexible collet means and carried on the other of said housing and said stab-in assembly; and valve yoke means manipulatably engageable with said valve member and responsive to mechanical manipulation of said tubular string to shift said valve member, said method comprising the steps of: (a) manipulating said tubular string in at least a first direction whereby said collet means and said collet engaging means are interengageable a first finite distance and said yoke does not manipulate said valve member from one of closed and open positions to the other of closed and open positions; (b) shifting said tubular string whereby said collet means and said collet engaging means are longitudinally moveable as a unit a second finite distance whereby said yoke means manipulates said valve member to one of closed and open positions; and (c) manipulating said tubular string in at least one longitudinal and rotational directions to completely interlatch said stab-in assembly and said housing.