GB1509293A - Instruments for measuring the orientation of a borehole - Google Patents

Instruments for measuring the orientation of a borehole

Info

Publication number
GB1509293A
GB1509293A GB1256775A GB1256775A GB1509293A GB 1509293 A GB1509293 A GB 1509293A GB 1256775 A GB1256775 A GB 1256775A GB 1256775 A GB1256775 A GB 1256775A GB 1509293 A GB1509293 A GB 1509293A
Authority
GB
United Kingdom
Prior art keywords
measuring
instrument
axis
case
gravity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1256775A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB1256775A priority Critical patent/GB1509293A/en
Publication of GB1509293A publication Critical patent/GB1509293A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/02—Determining slope or direction
    • E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Geophysics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Gyroscopes (AREA)

Abstract

1509293 Measuring directions of boreholes M K RUSSELL AND A W RUSSELL 16 March 1976 [26 March 1975] 12567/75 Heading G1N An instrument for measuring the direction of a borehole, having a longitudinal axis coincident, in use, with the axis of the borehole comprises a gimbel mounted gyro the outer gimbel having its axis coincident with the longitudinal axis of the instrument, means for measuring the angle of rotation of the case of the instrument about said axis relative to the outer gimbal and three gravity sensors for measuring the components of gravity in three non-co-planar directions. As shown, the platform comprises a gyro-rotor 12 mounted in a pair of gimbals 14, 16 and the means for measuring the angle of rotation of the case comprises means for sensing angular movement of the inner gimbal relative to the outer gimbal, in use, and applying a torque by motor 22 to the outer gimbal to rotate it about its axis so that the inner gimbal precesses back to its initial position. The adjustment of the gimbals is measured by a resolver 26. The gravity sensors 28 as shown, are mounted on the platform but these may be mounted on the case of the instrument. In the latter case the signals have to be passed through a second resolver to determine the true components of gravity, Fig. 9 (not shown). A recorder is provided with the instrument, Figs. 7, 8, 9 (not shown), and the azimuth and elevation angle of the instruments are computed.
GB1256775A 1976-03-16 1976-03-16 Instruments for measuring the orientation of a borehole Expired GB1509293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1256775A GB1509293A (en) 1976-03-16 1976-03-16 Instruments for measuring the orientation of a borehole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1256775A GB1509293A (en) 1976-03-16 1976-03-16 Instruments for measuring the orientation of a borehole

Publications (1)

Publication Number Publication Date
GB1509293A true GB1509293A (en) 1978-05-04

Family

ID=10007026

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1256775A Expired GB1509293A (en) 1976-03-16 1976-03-16 Instruments for measuring the orientation of a borehole

Country Status (1)

Country Link
GB (1) GB1509293A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492882A1 (en) * 1980-10-23 1982-04-30 Sundstrand Data Control METHOD AND DEVICE FOR STUDYING THE TOPOGRAPHY OF A SURVEY
FR2511727A1 (en) * 1981-08-20 1983-02-25 Sperry Sun Inc IMPROVEMENTS ON INSTRUMENTS TO ADJUST THE DIRECTION OF A WELL
CN116988783A (en) * 2023-08-16 2023-11-03 中国石油天然气集团有限公司 Integrated measuring device and measurement while drilling system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492882A1 (en) * 1980-10-23 1982-04-30 Sundstrand Data Control METHOD AND DEVICE FOR STUDYING THE TOPOGRAPHY OF A SURVEY
FR2511727A1 (en) * 1981-08-20 1983-02-25 Sperry Sun Inc IMPROVEMENTS ON INSTRUMENTS TO ADJUST THE DIRECTION OF A WELL
CN116988783A (en) * 2023-08-16 2023-11-03 中国石油天然气集团有限公司 Integrated measuring device and measurement while drilling system
CN116988783B (en) * 2023-08-16 2024-05-03 中国石油天然气集团有限公司 Integrated measuring device and measurement while drilling system

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940316