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- W2034171523 abstract "Abstract Due to the high drilling costs associated with operating in a remote environment, there are strong incentives for reducing operating costs to maintain the economic viability of the field. One aspect of cost curtailment is reducing well evaluation costs. A solution is to utilize cased hole measurements which offer cost savings and reduced risk. Using a specially modified wireline density tool, reliable measurements of formation bulk density can be obtained through casing. This measurement costs less than a measurement while drilling (MWD) density tool and reduces the chance of lost tool charges. The cased hole density tool was constructed with source and receivers spaced further apart than on traditional open hole density tools allowing a deeper depth of investigation. A density correction algorithm has been developed to remove the effects of casing and cement to obtain a true formation density measurement. The tool has been run in over 15 wells, and comparisons with MWD and open hole wireline density data demonstrate the measurement is accurate and reliable. The availability of a cased hole density tool has allowed greater flexibility in the design of logging programs. In horizontal and extended reach wells, the use of MWD density tools, which require full gauge stabilizers, can hinder steering. Also, MWD formation evaluation (FE) tools are limited to 8.5 in. or larger boreholes. By eliminating the MWD density-neutron tool in the open hole string, and making the measurement with the cased hole density, considerable operational and cost benefits can be realized. Because of lower cost and reduced risk the cased hole density tool offers a reliable and safe alternative to open hole density measurements." @default.
- W2034171523 created "2016-06-24" @default.
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- W2034171523 date "1994-09-25" @default.
- W2034171523 modified "2023-09-27" @default.
- W2034171523 title "Through Casing Formation Density Measurements" @default.
- W2034171523 doi "https://doi.org/10.2118/28409-ms" @default.
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