Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
93 words
A tool for taking the impression of an area of the internal bore of a tubular member or of a joint between tubular members joined together comprising, a body member of a diameter to enter the bore, a pair of resilient membranes each surrounding the outer periphery of said body member, means in said body member for directing a casting compound between said membranes and for inflating and expanding said membranes into engagement with said bore, and means for deflating said expanded membranes to allow said tool to be withdrawn from said bore.
Claim 2
Dependent Claim
93 words
A tool for taking the impression of an area of the internal bore of a tubular member or of a joint between tubular members joined together comprising, a body member of a diameter to enter the bore, a pair of resilient membranes each surrounding the outer periphery of said body member, means in said body member for directing a casting compound between said membranes and for inflating and expanding said membranes into engagement with said bore, and means for deflating said expanded membranes to allow said tool to be withdrawn from said bore.
Claim 3
Dependent Claim
22 words
The tool as claimed in claim 1 wherein said means for directing casting compound between said membranes comprises working fluid under pressure.
Claim 4
Dependent Claim
22 words
The tool as claimed in claim 2 wherein the volume of said working fluid under pressure is limited to a predetermined amount.
Claim 5
Dependent Claim
23 words
The tool as claimed in claim 3 wherein said means for inflating and expanding said membranes against said bore is fluid under pressure.
Claim 6
Dependent Claim
28 words
The tool as claimed in claim 4 wherein the volume of said working fluid under pressure for inflating and expanding said membranes is limited to a predetermined amount.
Claim 7
Dependent Claim
27 words
The tool as claimed in claim 5 wherein said working fluid inflating and expanding said membranes is directed outside said tool to allow said membranes to contract.
Claim 8
Dependent Claim
51 words
The tool as claimed in claim 6 including a working fluid reservoir for containing said working fluid and to limit the amount of said working fluid, and wherein said working fluid directing casting compound between said membranes and the working fluid for inflating and expanding said membranes is from the reservoir.
Claim 9
Dependent Claim
27 words
The tool as claimed in claim 7 including piston means in said reservoir and responsive to fluid under pressure from another source for pressurizing said working fluid.
Claim 10
Dependent Claim
29 words
The tool as claimed in claim 8 wherein said fluid under pressure from another source is drill pipe fluid, said tool being connected to a string of drill pipe.
Claim 11
Dependent Claim
54 words
The tool as claimed in claim 9 further including at least one resin reservoir and at least one catalyst reservoir for containing resin and catalyst to form the casting compound, said resin and catalyst in their respective reservoir remaining separated until subjected to said working fluid for directing the casting compound between said membranes.
Claim 12
Dependent Claim
20 words
The tool as claimed in claim 10 further including a mixer in a path between said reservoir and said membrane.
Claim 13
Dependent Claim
78 words
The tool as claimed in claim 11 wherein said means for directing the casting compound between the membranes comprises an isolation/mix sequence valve located between said mixer and said reservoir, said valve in a first position isolating the reservoirs from the mixer and in a second position opening said reservoirs to the mixer, said valve being moveable from said first position to said second position in response to an increase in fluid pressure from said drill pipe fluid.
Claim 14
Dependent Claim
37 words
The tool as claimed in claim 12 wherein said means for directing the working fluid for inflating and expanding the membranes comprises a sequence valve in a path between the membranes and the source of working fluid.
Claim 15
Dependent Claim
54 words
The tool as claimed in claim 13 wherein the means for deflating the expanded membranes comprises a dump valve between said membranes and a path in said body member existing to the internal bore, said dump valve being closed to said path until actuated by a decrease in fluid pressure in said drill pipe.