Computerized truck instrumentation system

Claim 1

A method of acquiring and recording well logging signals which are representative of measurements derived from a well logging tool in a well bore traversing earth formations at a measure point on said well logging tool which is different from a preselected recording point, comprising the steps of: acquiring depth data representative of a predetermined distance being traversed by said measure point on said well logging tool which is reference to a known location in a well bore; acquiring data samples of said well logging signals in response to preselected multiples of said depth data having been acquired, said data samples being derived at a measure point which is located on said well logging tool at a preselected distance from said preselected recording point; storing a data sample of said well logging signal at a predetermined location in a storage system, said storage location referenced to said measure point on said well logging tool being at a known location in said well bore; and retrieving said stored data in response to a preselected sequence of steps to provide said stored data from said predetermined storage location at a time subsequent to and independent of the time of said acquiring and storing steps such that said stored data is available for recording on a recording medium at a recording location representative of said preselected recording point being at said known location in said well bore, and such that during any selected time interval the number of data samples acquired and stored may be different from the number of samples retrieved for recording.

Claim 2

A method of acquiring and recording well logging signals which are representative of measurements derived from a well logging tool in a well bore traversing earth formations at a measure point on said well logging tool which is different from a preselected recording point, comprising the steps of: acquiring depth data representative of a predetermined distance being traversed by said measure point on said well logging tool which is reference to a known location in a well bore; acquiring data samples of said well logging signals in response to preselected multiples of said depth data having been acquired, said data samples being derived at a measure point which is located on said well logging tool at a preselected distance from said preselected recording point; storing a data sample of said well logging signal at a predetermined location in a storage system, said storage location referenced to said measure point on said well logging tool being at a known location in said well bore; and retrieving said stored data in response to a preselected sequence of steps to provide said stored data from said predetermined storage location at a time subsequent to and independent of the time of said acquiring and storing steps such that said stored data is available for recording on a recording medium at a recording location representative of said preselected recording point being at said known location in said well bore, and such that during any selected time interval the number of data samples acquired and stored may be different from the number of samples retrieved for recording.

Claim 3

A method for controlling a well logging system to process well logging data which are representative of measurements derived from a well logging tool adapted for use in a well bore transversing earth formations, comprising the steps of: moving a well logging tool through a well bore for investigating and measuring selected earth formation characteristics surrounding a well bore and for acquiring data and providing an output representative of said characteristics; processing well logging data provided by a well logging tool according to preselected sequences of steps; simultaneously receiving first and second signals corresponding to the occurance of first and second events, said first and second events indicative of required processing of said well logging data according to first and second preselected sequences of steps respectively, at least one of said first and second events occurring in response to said output received from said acquiring means; stopping said processing of said well logging data according to a third preselected sequence of steps in response to the occurance of either one of said first and second signals; determining, according to a preselected priority, the preferred order for processing said well logging data according to said first, second, and third preselected sequence of steps; and resuming said processing of well logging data according to said first, second, and third preselected sequence of steps in said preferred order.

Claim 4

A method for controlling a well logging system to process well logging data which are representative of measurements derived from a well logging tool adapted for use in a well bore transversing earth formations, comprising the steps of: moving a well logging tool through a well bore for investigating and measuring selected earth formation characteristics surrounding a well bore and for acquiring data and providing an output representative of said characteristics; processing well logging data provided by a well logging tool according to preselected sequences of steps; simultaneously receiving first and second signals corresponding to the occurance of first and second events, said first and second events indicative of required processing of said well logging data according to first and second preselected sequences of steps respectively, at least one of said first and second events occurring in response to said output received from said acquiring means; stopping said processing of said well logging data according to a third preselected sequence of steps in response to the occurance of either one of said first and second signals; determining, according to a preselected priority, the preferred order for processing said well logging data according to said first, second, and third preselected sequence of steps; and resuming said processing of well logging data according to said first, second, and third preselected sequence of steps in said preferred order.

Claim 9

A method of acquiring and recording, well logging signals which are representative of measurements derived from a well logging tool at a measure point on said tool which is different from a reference point in a well bore traversing earth formations comprising the steps of: acquiring a well logging measurement as a data sample representative of a measure point on a well logging tool when said measure point was at a known measurement position in a well bore which is different from a reference point: storing said data sample in a storage facility at a storage location indicated by an input location pointer referenced to said known measurement position; advancing said input location pointer to a different storage location and repeating said acquiring and storing steps for different known measurement positions of said measure point as said well logging tool moves through said borehole; and retrieving at a subsequent time one of said stored data samples from the storage location in which it was stored and whose known measurement position then corresponds to the position of said reference point in said well bore, said storing and retrieving occurring independent of said storing such that during any selected time period the number of data samples stored may be different from the number of data samples retrieved.

Claim 10

A method of acquiring and recording, well logging signals which are representative of measurements derived from a well logging tool at a measure point on said tool which is different from a reference point in a well bore traversing earth formations comprising the steps of: acquiring a well logging measurement as a data sample representative of a measure point on a well logging tool when said measure point was at a known measurement position in a well bore which is different from a reference point: storing said data sample in a storage facility at a storage location indicated by an input location pointer referenced to said known measurement position; advancing said input location pointer to a different storage location and repeating said acquiring and storing steps for different known measurement positions of said measure point as said well logging tool moves through said borehole; and retrieving at a subsequent time one of said stored data samples from the storage location in which it was stored and whose known measurement position then corresponds to the position of said reference point in said well bore, said storing and retrieving occurring independent of said storing such that during any selected time period the number of data samples stored may be different from the number of data samples retrieved.