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Los Angeles, CA, United States

Patent
Leaf Inc | Date: 2014-05-06

A soil tester is disclosed, and comprises a housing and a sampling apparatus. The housing includes an interior sampling chamber configured to receive a sample container. The sampling apparatus comprises a photodetector and a light source. The photodetector is mounted along a portion of the interior sampling chamber and has a variable resistance determined by a property of incident light. The light source is mounted to the interior sampling chamber in a transmissive orientation relative to the photodetector so that a beam of light can be transmitted from the light source to the photodetector through the interior sampling chamber. A display on the housing is responsive to the photodetector.


Patent
Leaf Inc and Total E&P United States Oil Shale LLC | Date: 2015-10-12

A fluid seal system for a hydrocarbon recovery capsule includes a plurality of interconnected fluid seals each comprising an elongated sealing member clamped to a bulkhead plate and biasing a geomembrane to the bulkhead plate. A compression plate is positioned between each elongated sealing member and the bulkhead plate, thereby clamping the geomembrane to the bulkhead plate. An enclosed channel of each elongated sealing member receives a slurry. Clay amended soil surrounds and compresses the plurality of interconnected seals to provide a fluid seal that is capable of withstanding high temperatures while sealing off fluid and gas from the environment. A method of sealing a hydrocarbon recovery capsule is disclosed and described.


Patent
Leaf Inc | Date: 2014-08-25

An articulating conduit linkage system for maintaining a fluid connection between a fluid source and displaceable conduit that has been buried in a subsiding permeable body. A fluid source can supply a working fluid through a source outlet. A displaceable conduit can receive the working fluid through a conduit inlet, and be buried at a depth within a subsiding permeable body that is contained within a permeability control infrastructure. A plurality of articulating conduit segments can include, an outer conduit segment coupled to the source outlet, an inner conduit segment coupled to the conduit inlet, and at least one middle conduit segment coupled to the outer and inner segments. In the event of a subsidence, the plurality of articulating conduit segments are configured so the outer and inner conduit segments extend the conduit linkage system while maintaining a working fluid connection between the source outlet and the conduit inlet.


Patent
Leaf Inc and Total E&P United States Shale LLC | Date: 2015-10-12

A gas containment system can include a gas barrier layer forming a capsule. The gas barrier layer can be made up of a particulate swelling clay, a non-swelling particulate material mixed with the particulate swelling clay, water, and a water-soluble polyol. The water can hydrate the particulate swelling clay and form a continuous liquid phase in the gas barrier layer. The water-soluble polyol can be dissolved in the water. The gas containment system can further include a gas retained inside the capsule.


Patent
Leaf Inc and Total E&P United States Oil Shale LLC | Date: 2015-10-12

Systems and methods for containing a subsiding solid material. A containment system can include a capsule surrounding a porous volume. The porous volume can contain a porous solid material subject to subsidence oriented within the capsule and supporting the roof of the capsule. The roof of the capsule can include a sloped portion configured to decrease in slope as the solid material subsides. A plurality of geosynthetic layers can be oriented along the sloped portion. The plurality of geosynthetic layers can include at least two adjacent geosynthetic layers that laterally slide with respect to one another during subsidence to reduce shear forces in the sloped roof portion.

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