{"id":741,"date":"2020-10-18T22:14:28","date_gmt":"2020-10-18T19:14:28","guid":{"rendered":"https:\/\/adcr.ru\/?p=741"},"modified":"2020-10-18T23:02:54","modified_gmt":"2020-10-18T20:02:54","slug":"2008-4-2","status":"publish","type":"post","link":"https:\/\/adcr.ru\/en\/2008-4-2\/","title":{"rendered":"\"REPORTER of the Association of Drilling Contractors\" N 4, 2008"},"content":{"rendered":"
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\"\"<\/strong><\/h3>\n

THE CASE HISTORY OF THE USE OF THE ABOVE-BIT EJECTOR PUMP TO ENHANCE DRILLING PERFORMANCE.<\/strong><\/em><\/p>\n

S.V.Evstifeev, Chief Process Engineer<\/strong>
CJSC \u201cService Company \u201cNedra\u201d<\/strong><\/span><\/p>\n

The experience of oil and gas well drilling suggests that drill bit performance decreases sharply as the borehole gets deeper. As you know, the main reason is the changing downhole conditions of rock breaking. \u00a0It is currently believed that differential pressure is as a rule the major factor that determines drilling performance within the existing drilling practices. To reduce differential pressure, the author developed a device based on the principle of ejection \u2013 the above-bit ejection pump EZhG, as well as methods of hydraulic program optimization.
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Key words: differential pressure; flowing pressure; ejector pump; penetration rate; borehole drilling.<\/em><\/p>\n

THE CASE HISTORY OF THE USE OF THE ABOVE-BIT EJECTOR PUMP TO ENHANCE DRILLING PERFORMANCE.<\/strong><\/em><\/p>\n

S.V.Evstifeev, Chief Process Engineer<\/strong>
CJSC \u201cService Company \u201cNedra\u201d<\/strong><\/span><\/p>\n

The experience of oil and gas well drilling suggests that drill bit performance decreases sharply as the borehole gets deeper. As you know, the main reason is the changing downhole conditions of rock breaking.  It is currently believed that differential pressure is as a rule the major factor that determines drilling performance within the existing drilling practices. To reduce differential pressure, the author developed a device based on the principle of ejection \u2013 the above-bit ejection pump EZhG, as well as methods of hydraulic program optimization.
The results of the EZhG testing in the fields of West Siberia, Sakhalin, the Republic of Tatarstan, and Saratov in more than 100 wells drilled using different techniques demonstrated the high efficiency of the system: the penetration rate increased by 80\u2026100 percent, the footage \u2013 by 90\u2026120 percent, with  the pressure differential in EZhG of around 6.0 MPa.<\/p>\n

Key words: differential pressure; flowing pressure; ejector pump; penetration rate; borehole drilling.<\/em><\/p>\n

\u00a0<\/strong><\/h3>\n

\u00a0<\/p>\n

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