text: Patent US4195349 - Self calibrating environmental condition sensing and recording apparatus - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsApparatus for measuring and recording environmental conditions in a deep bore hole using a down hole gauge including pressure and temperature sensors and data processing elements is disclosed. A pressure transducer such as a Bourdon tube is provided for measuring the down hole pressure. An encoder coupled...http://www.google.com/patents/US4195349?utm_source=gb-gplus-sharePatent US4195349 - Self calibrating environmental condition sensing and recording apparatusAdvanced Patent SearchPublication numberUS4195349 APublication typeGrantApplication numberUS 05/872,530Publication dateMar 25, 1980Filing dateJan 26, 1978Priority dateJan 26, 1978Publication number05872530, 872530, US 4195349 A, US 4195349A, US-A-4195349, US4195349 A, US4195349AInventorsHayati BalkanliOriginal AssigneeLynes, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (5), Referenced by (32), Classifications (18) External Links: USPTO, USPTO Assignment, EspacenetSelf calibrating environmental condition sensing and recording apparatusUS 4195349 AAbstract Apparatus for measuring and recording environmental conditions in a deep bore hole using a down hole gauge including pressure and temperature sensors and data processing elements is disclosed. A pressure transducer such as a Bourdon tube is provided for measuring the down hole pressure. An encoder coupled to the pressure transducer produces a plurality of data bits defining a coded word representative of the down hole pressure. A temperature transducer is also provided for measuring the down hole temperature. An oscillator is coupled to the temperature transducer for providing a timing signal having a frequency which is proportional to the down hole temperature. Serial shift registers are provided for recording data bits in separate groups of bits defining data words which are representative of the down hole pressure and temperature conditions. Temperature information is integrated into each data word by sequentially gating the pressure data bits into a serial shift register at a rate which is proportional to the frequency of the temperature-dependent timing signal.
  What is claimed is: 1. Apparatus for measuring and recording environmental conditions comprising, in combination:means for sensing a first environmental condition, including encoder means for providing a plurality of data bits defining a coded word, each bit of the coded word having at least two distinct code states, the premutation sequence of the code states of the bits in the word being representative of the first environmental condition sensed; means for sensing a second environmental condition, including means for providing a timing signal having a frequency indicative of the level of the second environmental condition sensed; a clock signal generator for generating clock pulses at a fixed frequency; a counting circuit coupled to the clock signal generator for producing a plurality of data bits representative of its count during a counting interval, data storage means for recording data bits in separate groups of bits defining data words which are representative of the first and second environmental conditions, respectively; and, control circuitry logically coupled to the first and second environmental condition sensing means, clock signal generator, counting circuit and data storage means for sequentially gating the first environmental condition data bits into the data storage means at a rate which is proportional to the frequency of the timing signal, for enabling the counting circuit simultaneously with the gating of the last data bit of the first environmental condition data word, for disabling the counting circuit in response to the generation by the clock signal generator of a predetermined number of clock pulses during a counting interval beginning with the gating of the first data bit of the first environmental condition word and terminating in response to the completion of said predetermined clock pulse count, and for gating the plurality of data bits representative of the number of clock pulses counted by the counting circuit during said counting interval into the data storage means in response to the occurrence of said predetermined count. 2. The environmental condition measuring and recording apparatus as defined in claim 1, wherein the first environmental condition is pressure, and the second environmental condition is temperature.
  SUMMARY OF THE INVENTION The present invention provides a down hole gauge apparatus for measuring and recording environmental conditions such as pressure and temperature, which features sub-surface data processing and digital storage of data. The instrument is self-contained, self-powered, and includes sensors which are sensitive to the environmental conditions in a deep bore hole and which provide electrical signals which vary according to the variation of the values of the environmental conditions at various depths.
  BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a simplified circuit block diagram of the self-calibrating environmental condition measuring and recording apparatus of the invention;
  DESCRIPTION OF THE PREFERRED EMBODIMENT In the description which follows, like parts are marked throughout the specification and drawing with the same reference numerals respectively.
  Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS2922990 *Dec 20, 1956Jan 26, 1960Information Systems IncData reduction systemUS3807860 *Jan 31, 1973Apr 30, 1974Environmental Devices CorpMethod and apparatus for determining pollution indexUS4031365 *Oct 14, 1975Jun 21, 1977Itus Patent Holding (Iph) N.V.Temperature monitoring and display systemUS4033186 *Aug 6, 1976Jul 5, 1977Don BresieMethod and apparatus for down hole pressure and temperature measurementUS4064396 *Dec 13, 1976Dec 20, 1977Sangamo Weston, Inc.Dynamic linearization system for a radiation gauge* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS4375164 *Apr 22, 1981Mar 1, 1983Halliburton CompanyFormation testerUS4393485 *May 2, 1980Jul 12, 1983Baker International CorporationApparatus for compiling and monitoring subterranean well-test dataUS4468968 *Apr 21, 1983Sep 4, 1984The Singer CompanyMethod of imputing to a microcomputerUS4593370 *Jul 26, 1982Jun 3, 1986Hayati BalkanliEnvironmental measuring and recording apparatusUS4620189 *Aug 15, 1983Oct 28, 1986Oil Dynamics, Inc.For pumping a liquidUS4624136 *Mar 29, 1985Nov 25, 1986Panex CorporationDown hole power conversion means for fully utilizing batteriesUS4658407 *Dec 20, 1984Apr 14, 1987Kabushiki Kaisha ToshibaElectronic clinical thermometer with power shut-off at maximum temperatureUS4663628 *May 6, 1985May 5, 1987Halliburton CompanyMethod of sampling environmental conditions with a self-contained downhole gauge systemUS4665398 *May 6, 1985May 12, 1987Halliburton CompanyMethod of sampling and recording information pertaining to a physical condition detected in a well boreUS4671296 *Dec 27, 1984Jun 9, 1987Aitken Louis FRacehorse athletic condition measuring instrumentUS4675649 *Sep 11, 1985Jun 23, 1987Halliburton CompanyApparatus and method for interfacing a transducerUS4686631 *Feb 8, 1985Aug 11, 1987Ruud Clayton OMethod for determining internal stresses in polycrystalline solidsUS4689744 *Jan 14, 1985Aug 25, 1987Halliburton CompanyControl method for a recording deviceUS4703650 *Jun 24, 1986Nov 3, 1987Compagnie Generale Des Etablissements MichelinCircuit for the coding of the value of two variables measured in a tire, and device for monitoring tires employing such a circuitUS4709234 *May 6, 1985Nov 24, 1987Halliburton CompanyFor detecting an environmental condition in a well boreUS4751654 *Oct 28, 1985Jun 14, 1988Vaisala OyMethod of and arrangement for measuring impedances in measuring circuits having programmed memoryUS4761539 *Apr 13, 1987Aug 2, 1988The Tappan CompanyOven calibration system having variable stored calibration valueUS4765188 *Nov 24, 1986Aug 23, 1988Bourns Instruments, Inc.Pressure transducer with integral digital temperature compensationUS4788545 *May 27, 1986Nov 29, 1988Oil Dynamics, Inc.Parameter telemetering from the bottom of a deep boreholeUS4806153 *Feb 25, 1987Feb 21, 1989Kisojiban Consultants Co., Ltd.Method and apparatus for investigating subsurface conditionsUS4876539 *Oct 14, 1988Oct 24, 1989Oil Dynamics, Inc.Parameter telemetering from the bottom of a deep boreholeUS5153832 *Jul 21, 1989Oct 6, 1992Halliburton CompanyFor recording digital information pertinent to samplesUS5319965 *Mar 2, 1992Jun 14, 1994Halliburton CompanyMultiple channel pressure recorderUS5337234 *May 5, 1992Aug 9, 1994Halliburton CompanySelf-contained downhole gauge systemUS5388451 *Jul 30, 1993Feb 14, 1995Consolidated Electronics Inc.High voltage transmission switching apparatus with gas monitoring deviceUS5509312 *May 25, 1994Apr 23, 1996Schlumberger Technology CorporationDiaphragm pressure sensor including anti-stock protection means and gradiomanometer incorporating such a sensorUS6176323 *Jun 26, 1998Jan 23, 2001Baker Hughes IncorporatedDrilling systems with sensors for determining properties of drilling fluid downholeUS8701460 *Mar 31, 2011Apr 22, 2014Freescale Semiconductor, Inc.Method and system to compensate for temperature and pressure in piezo resistive devicesUS20120247175 *Mar 31, 2011Oct 4, 2012Freescale Semiconductor, Inc.Method and system to compensate for temperature and pressure in piezo resistive devicesEP1606602A2 *Jan 21, 2004Dec 21, 2005Dresser, Inc.Pressure measurement with temperature compensation of pressure-conveyance mediaWO1988004078A1 *Nov 20, 1987Jun 2, 1988Bourns Instr IncPressure transducer with integral digital temperature compensationWO1999000575A2 *Jun 26, 1998Jan 7, 1999Baker Hughes IncDrilling system with sensors for determining properties of drilling fluid downhole* Cited by examinerClassifications U.S. Classification702/98, 702/99, 377/19, 377/50, 374/143, 377/25, 73/152.52International ClassificationG01L19/04, E21B47/06, E21B47/12Cooperative ClassificationE21B47/06, E21B47/065, E21B47/124, G01L19/04European ClassificationE21B47/06B, G01L19/04, E21B47/12S, E21B47/06RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services