Impression block with orientator

V. I. Brilin, O. S. Ulyanova

Research output: Contribution to journalConference article

Abstract

Tool review, namely the impression block, applied to check the shape and size of the top of fish as well as to determine the appropriate tool for fishing operation was realized. For multiple application and obtaining of the impress depth of 3 cm and more, the standard volumetric impression blocks with fix rods are used. However, the registered impress of fish is not oriented in space and the rods during fishing are in the extended position. This leads to rods deformation and sinking due to accidental impacts of impression block over the borehole irregularity and finally results in faulty detection of the top end of fishing object in hole. The impression blocks with copy rods and fixed magnetic needle allow estimating the object configuration and fix the position of magnetic needle determining the position of the top end of object in hole. However, the magnetic needle fixation is realized in staged and the rods are in extended position during fishing operations as well as it is in standard design. The most efficient tool is the impression block with copy rods which directs the examined object in the borehole during readings of magnetic needles data from azimuth plate and averaging of readings. This significantly increases the accuracy of fishing toll direction. The rods during fishing are located in the body and extended only when they reach the top of fishing object.

Original languageEnglish
Article number012005
JournalIOP Conference Series: Earth and Environmental Science
Volume24
Issue number1
DOIs
Publication statusPublished - 1 Jan 2015
EventScientific and Technical Challenges in the Well Drilling Progress - Tomsk, Russian Federation
Duration: 24 Nov 201427 Nov 2014

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fishing
borehole
fish
azimuth
fixation

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

Impression block with orientator. / Brilin, V. I.; Ulyanova, O. S.

In: IOP Conference Series: Earth and Environmental Science, Vol. 24, No. 1, 012005, 01.01.2015.

Research output: Contribution to journalConference article

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