METHOD OF DRILLING A PRODUCTIVE BED IN THE FORMATION OF PETROLEUM NATURAL GAS AND LIKE WELLS

PCT No. PCT/SU80/00084 Sec. 371 Date Jan. 31, 1981 Sec. 102(e) Date Jan. 23, 1981 PCT Filed May 30, 1980 PCT Pub. No. WO80/02718 PCT Pub. Date Dec. 11, 1980.The present invention relates to the completion of wells and, more particularly, it relates to a method of drilling a productive bed. The herei...

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Bibliographische Detailangaben
Hauptverfasser:	ALEKHIN STANISLAV AFANASIEVICH, BORN RAISA IVANOVNA, MAMADZHANOV ULMAS DZHURAEVICH, BAKHIR VITOLD MIKHAILOVICH
Format:	Patent
Sprache:	eng
Schlagworte:	DETECTING MASSES OR OBJECTS EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS TESTING
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Zusammenfassung:	PCT No. PCT/SU80/00084 Sec. 371 Date Jan. 31, 1981 Sec. 102(e) Date Jan. 23, 1981 PCT Filed May 30, 1980 PCT Pub. No. WO80/02718 PCT Pub. Date Dec. 11, 1980.The present invention relates to the completion of wells and, more particularly, it relates to a method of drilling a productive bed. The herein disclosed method of drilling a productive bed comprises the tapping of the bed roof using a starting flushing fluid and the determination of the redox potential value at the moment of tapping the bed roof, and subsequent replacement of the starting flushing fluid with a fluid having redox potential value and sign equal to those of the productive bed rock.