摘要 :
A prototype retractable bit system was developed consisting of a one-piece replaceable diamond set bit, a modified core barrel, bit changing tools, and surface components that allow activation of the system. Drilling with the retr...
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A prototype retractable bit system was developed consisting of a one-piece replaceable diamond set bit, a modified core barrel, bit changing tools, and surface components that allow activation of the system. Drilling with the retractable bit system is conducted in the same manner as present core drilling, except when the bit becomes worn the bit is changed with the drill string left in the hold. The operations in changing the bit are similar to those required in changing inner core tube assemblies with the wireline cable. The prototype testing indicates that this retractable bit system is feasible.
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摘要 :
This Acceptance Test Procedure (ATP) will document compliance with the requirements of WHC-S-056 Rev. 2 and ECN 608798. The equipment being tested is a Furniture Type trailer with storage cabinets, lighting and HVAC systems instal...
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This Acceptance Test Procedure (ATP) will document compliance with the requirements of WHC-S-056 Rev. 2 and ECN 608798. The equipment being tested is a Furniture Type trailer with storage cabinets, lighting and HVAC systems installed. The unit was purchased as a Design and Fabrication procurement activity. The ATP was written by the Seller and will be performed by the Seller with representatives of the Westinghouse Hanford Company witnessing the test at the Seller's location.
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This is a review on the development work on core protective instrumentation for LMFBR type reactors. This report covers topics such as: monitoring of the fuel element outlet temperatures; monitoring of the fuel element flow; integ...
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This is a review on the development work on core protective instrumentation for LMFBR type reactors. This report covers topics such as: monitoring of the fuel element outlet temperatures; monitoring of the fuel element flow; integral methods for the detection of sodium boiling; nuclear techniques for the monitoring of fuel elements for cladding-tube damage; and irradiation experiments with components of the reactor instrumentation. (ERA citation 11:011358)
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A program has been completed to develop improved low invasion fluids for pressure coring applications. This paper describes the results of an experimental investigation which was performed on seven different low invasion fluids. T...
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A program has been completed to develop improved low invasion fluids for pressure coring applications. This paper describes the results of an experimental investigation which was performed on seven different low invasion fluids. The investigation employed commercially available calcium carbonate (CaCO sub 3 ) materials which were compared using two different sandstone core samples (brown and gray berea) and two simulated field conditions (static and dynamic). The results indicate that the presently used mixture of 10 lb/bbl hydroxyethyl cellulose (HEC) polymer and 300 lb/bbl CaCO sub 3 in a CaCl sub 2 eutectic brine mixture appears to be a very good choice for minimizing invasion of the core sample. Minor improvements in core invasion are achieved by matching the CaCo sub 3 particle size to the formation pore size. Experimentation or prior experience are necessary for choosing the type of CaCO sub 3 to be used. At best, the invasion of the core may only be slowed and not stopped completely. Factors which cause relatively large amounts of filtrate intrusion into the core are long exposure times, low fluid viscosities, and low solids content of the fluid. Curves demonstrating the effectiveness of high polymer and CaCO sub 3 particle concentrations and comparing the core invasion of water, bentonite drilling mud and the seven low invasion fluids are presented. (ERA citation 07:020846)
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摘要 :
This report describes a transformer core clamp that increases both the clamping force applied to a center leg of the transformer core and the shock resistance of the transformer core. The clamp is constructed with opposed clamp pl...
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This report describes a transformer core clamp that increases both the clamping force applied to a center leg of the transformer core and the shock resistance of the transformer core. The clamp is constructed with opposed clamp plates on the outward facing sides of opposed core members. The outward facing sides of the core members are tapered from the midsection of the core member to the ends of the core members. The plates are connected by tension members and fasteners which are adjustable to tighten the plates against the core members. The tension members are positioned at opposed ends of the core and on either side of a core midsection adjacent the center leg of the core. The clamp plates abut the midsection of the core members and, with the end tension members, act as a lever arm to exert increased compressive force on the midsection of the core members adjacent the center leg. The midsection tension members apply additional compressive force on the center leg to reduce the air gap and the noise of the transformer and increase the shock resistance of the core thus preventing misalignment of the core members. (Author)
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