# US 2009/0260416 A1 · Low dead-volume core-degassing apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2009/0260416 A1 - Document ID: US20090260416A1 - Status: Published application - Kind: A1 - Application number: 12/386,368 - Filed: 2009-04-17 - Published: 2009-10-22 - Earliest claimed: 2008-04-17 - Assignees: Isotech Laboratories, Inc. - Inventors: Dennis Coleman; Coleman Todd - Web page: https://patentgrep.com/patent/US20090260416A1 ## CPC - G01N 33/241: {for hydrocarbon content} - G01N 1/2294: {Sampling soil gases or the like} - G01N 7/14: by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference {(determining urea G01N33/48742)} - G01N 33/24: Earth materials (G01N33/42 takes precedence) - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract A canister for measuring the natural gas content of rock cores which (1) has an inner core-containment bag made of non-permeable plastic which can be flash evacuated, collapsing around the core and thus minimizing the amount of air present and improving the quality of the gas analyses and (2) which prevents the released gas from reacting with the outer canister. A procedure for using gas-sampling bags to periodically collect the gas released from the core so that (1) the volume of released gas can be measured at a later date using more convenient and precise laboratory methods, (2) the gas can be readily transported and stored, and (3) the gas can be easily submitted for analysis. ## Claims ### Claim 1 A core degassing apparatus comprising: a. a body, b. said body having a first body end and a second body end, c. a cap sealably connected to said first body end, d. a sealing disk, sealably connected to said second body end whereby an air tight chamber is formed, e. a core containment bag disposed within said chamber, f. said core containment bag having a core containment bag first end and a core containment bag second end. g. said core containment bag first end fluidly connected to the exterior of said chamber. ### Claim 2 (depends on 1) The core degassing apparatus of claim 1 further comprising: a. a valve fluidly connected to said chamber, b. a pressure gauge fluidly connected to said chamber, c. a central stem fluidly connected to said core containment bag, ### Claim 3 (depends on 2) The core degassing apparatus of claim 2 further comprising: a. a cap through which said valve, said pressure gauge and said central stem are sealably disposed. ### Claim 4 (depends on 1) The core degassing apparatus of claim 1 further comprising: a. a body cylindrical in shape, b. said first body end having a body gasket seat, c. a body gasket disposed within said body o-ring seat, whereby said cap when disposed over said first body end, said cap is sealably connected with said body. ### Claim 5 (depends on 4) The core degassing apparatus of claim 4 wherein said body gasket is an o-ring. ### Claim 6 (depends on 1) The core degassing apparatus of claim 1 further comprising: a. a cap, body and sealing disk composed of plastic. ### Claim 7 (depends on 1) The core degassing apparatus of claim 1 further comprising: a. a core containment bag composed of non-permeable material. ### Claim 8 (depends on 1) The core degassing apparatus of claim 1 further comprising: a. a sealing disk having a disk o-ring seat, b. a disk o-ring disposed within said disk o-ring seat, whereby when said sealing disk is disposed within said second body end, said sealing disk is sealably connected with said second body end. ### Claim 9 (depends on 1) The core degassing apparatus of claim 1 further comprising: a. said core containment bag first end having a core containment bag aperture, b. said core containment bag second end being open and capable of vacuum sealing. ### Claim 10 (depends on 1) The core degassing apparatus of claim 1 further comprising: ### Claim 11 (depends on 1) The core degassing apparatus of claim 1 further comprising: a. a base assembly said base assembly comprised of said sealing disk, rotatably connected to a base disk. ### Claim 12 A method of core degassing comprising: a. inserting a core segment into a containment bag, b. sealing said core containment bag, c. sealing said containment bag into an air tight chamber, d. removing gas samples desorbed from said core, e. measuring said gas sample volumes. ### Claim 13 (depends on 9) The method of core degassing of claim 9 wherein said sealing core containment bag step further comprises: a. vacuum sealing said core containment bag. ### Claim 14 (depends on 9) The method of core degassing of claim 9 further comprising: a. measuring the rate of desorption of gas, ### Claim 15 (depends on 9) The method of core degassing of claim 9 further comprising: a. pressurizing air tight chamber whereby said removing of gas samples from said core containment is facilitated. ### Claim 16 (depends on 9) The method of core degassing of claim 9 wherein said gas sample volume measuring step further comprises: a. placing gas samples into a gas sampling container, b. weighing a container of water, c. submerging gas sampling bag into said container of water, d. measuring increase in weight of water, e. measuring the buoyancy of the gas filled gas sampling container, f. measuring the buoyancy of and empty gas sampling container, g. subtracting the buoyancy of the empty gas sampling container from the buoyancy of the gas filled gas sampling container, h. calculating the volume of gas, i. adjusting volume of gas for temperature.