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AssigneeReeves Wireline Technologies Limited
InventorsJames Roger Samworth, Charles Richard Easter, Charles Alexander Pereira, Terence Paul Mayor
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A well logging device of compact reduced diameter compared to the prior art, such well logging device having both short spaced and long spaced types of gamma ray crystal detectors installed in a measurements skid that comprises a relatively small diameter device constructed to withstand high temperatures and pressures, this device comprising a continuous stainless steel tube which provides pressure resistance and also allows low energy gamma ray transparency via large and small windows. This elongate type of stainless steel skid tube is furthermore internally supported by an internal tungsten tube placed therewithin, while the skid design also includes means for pressing the skid tube against a borehole wall so as to obtain more accurate formation density measurements downhole.
A well logging device including a detector system having a long spaced detector crystal and a short spaced detector crystal mounted in a skid, said skid being provided with means for pressing said skid against the side of a borehole, said skid comprising an elongate tube having a continuous cylindrical wall of low energy gamma ray transparency, said tube being internally supported by an inner support means to provide support for said elongate tube over a major internal area of said elongate tube.
A well logging device including a detector system having a short spaced detector crystal and a long spaced detector crystal mounted in a skid, said skid being provided with means for pressing said skid against the side of a borehole, said skid comprising an elongate tube of low energy gamma ray transparency, said tube being internally supported by an inner support means to provide support for said elongate tube over a major internal area of said elongate tube,
A well logging device having a short spaced detector crystal and a long spaced detector crystal including a detector system mounted in a skid, said skid being provided with means for pressing said skid against the side of a borehole, said skid comprising an elongate tube of low energy gamma ray transparency, said tube being internally supported by an inner support means to provide support for said elongate tube over a major internal area of said elongate tube,
Dependencies are inferred from the claim text.