# US 2014/0151023 A1 · Adapter assembly for a well system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0151023 A1 - Document ID: US20140151023A1 - Status: Published application - Kind: A1 - Application number: 13/786,837 - Filed: 2013-03-06 - Published: 2014-06-05 - Earliest claimed: 2012-11-30 - Assignees: Wells, Inc. - Applicants: Wells, Inc. - Inventors: Steffen R. Wellstein - Web page: https://patentgrep.com/patent/US20140151023A1 ## CPC - E21B 41/0042: {characterised by sealing the junction between a lateral and a main bore} - E21B 17/02: Couplings; joints {(expandable couplings or joints E21B43/106)} - E21B 23/00: Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (setting of casings, screens or liners E21B43/10) - E21B 33/00: Sealing or packing boreholes or wells - Y10T 29/49: Method of mechanical manufacture - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract An adapter assembly for a well system includes at least one coupling member having a passage formed therein and an adapter including a neck duct formed thereon. The neck duct is received in the passage of the coupling member forming a substantially fluid-tight seal therebetween. At least the adapter is formed from a lead-free material, minimizing a weighted average lead content of the adapter assembly. ## Claims ### Claim 1 An adapter assembly for a well system, comprising: an adapter configured to be disposed in a casing of a well, the adapter including an outwardly extending duct, wherein the adapter cooperates with a first coupling member to facilitate a flow of a fluid from the well, wherein the adapter includes at least one of a substantially planar mating surface located on a face of the duct and a housing formed from a substantially lead-free material, and wherein a weighted average lead content of the adapter assembly with respect to wetted surfaces of the adapter and the first coupling member is no more than about 0.25 percent. ### Claim 2 (depends on 1) The adapter assembly of claim 1, wherein the first coupling member is disposed on one of an inner surface and an outer surface of the casing. ### Claim 3 (depends on 1) The adapter assembly of claim 1, further comprising a second coupling member configured to cooperate with at least one of the adapter and the first coupling member to facilitate the flow of the fluid from the well. ### Claim 4 (depends on 3) The adapter assembly of claim 3, wherein at least one of the first coupling member and the second coupling member is formed from a substantially lead-free material. ### Claim 5 (depends on 4) The adapter assembly of claim 4, wherein the substantially lead-free material is a polyphenylene ether-polystyrene blended plastic material. ### Claim 6 (depends on 3) The adapter assembly of claim 3, wherein a weighted average lead content of the adapter assembly with respect to wetted surfaces of the adapter, the first coupling member, and the second coupling member is no more than about 0.25 percent. ### Claim 7 (depends on 3) The adapter assembly of claim 3, wherein the second coupling member is disposed on one of an inner surface and an outer surface of the casing. ### Claim 8 An adapter assembly for a well system, comprising: an adapter configured to be disposed in a casing of a well, the adapter cooperates with a first coupling member to facilitate a flow of a fluid from the well, wherein at least one of the adapter and the first coupling member is formed from a polyphenylene ether-polystyrene blended plastic material. ### Claim 9 (depends on 8) The adapter assembly of claim 8, wherein a weighted average lead content of the adapter assembly with respect to wetted surfaces of the adapter and the first coupling member is no more than about 0.25 percent. ### Claim 10 (depends on 8) The adapter assembly of claim 8, wherein the first coupling member is disposed on one of an inner surface and an outer surface of the casing. ### Claim 11 (depends on 8) The adapter assembly of claim 8, wherein the adapter includes a laterally outwardly extending duct having at least one mating surface. ### Claim 12 (depends on 11) The adapter assembly of claim 11, further comprising a sealing member interposed between the first coupling member and the at least one mating surface of the duct. ### Claim 13 (depends on 8) The adapter assembly of claim 8, further comprising a second coupling member configured to cooperate with at least one of the adapter and the first coupling member to facilitate the flow of the fluid from the well. ### Claim 14 (depends on 13) The adapter assembly of claim 13, wherein the second coupling member is formed from a substantially lead-free material. ### Claim 15 (depends on 14) The adapter assembly of claim 14, wherein the substantially lead-free material is the polyphenylene ether-polystyrene blended plastic material. ### Claim 16 (depends on 13) The adapter assembly of claim 13, wherein a weighted average lead content of the adapter assembly with respect to wetted surfaces of the adapter, the first coupling member, and the second coupling member is no more than about 0.25 percent. ### Claim 17 (depends on 13) The adapter assembly of claim 13, wherein the second coupling member is disposed on one of an inner surface and an outer surface of the casing. ### Claim 18 A method of forming an adapter assembly for a well system, comprising the step of: forming an adapter from a polyphenylene ether-polystyrene blended plastic material, wherein the adapter is configured to be disposed in a casing of a well. ### Claim 19 (depends on 18) The method of claim 18, further comprising the step of forming a first coupling member from a substantially lead-free material, wherein the first coupling member is configured to cooperate with the adapter to facilitate a flow of a fluid from the well. ### Claim 20 (depends on 19) The method of claim 19, further comprising the step of forming a second coupling member from a substantially lead-free material, wherein the second coupling member is configured to cooperate with at least one of the adapter and the first coupling member to facilitate the flow of the fluid from the well.