EA200400346A1 - METHOD OF ELECTRIC FLOORING OF EXTERNAL WELLS - Google Patents

METHOD OF ELECTRIC FLOORING OF EXTERNAL WELLS

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Publication number
EA200400346A1
EA200400346A1 EA200400346A EA200400346A EA200400346A1 EA 200400346 A1 EA200400346 A1 EA 200400346A1 EA 200400346 A EA200400346 A EA 200400346A EA 200400346 A EA200400346 A EA 200400346A EA 200400346 A1 EA200400346 A1 EA 200400346A1
Authority
EA
Eurasian Patent Office
Prior art keywords
current
column
electrode
measuring electrodes
electrodes
Prior art date
Application number
EA200400346A
Other languages
Russian (ru)
Other versions
EA005902B1 (en
Inventor
Алексей Сергеевич КАШИК
Николай Иванович РЫХЛИНСКИЙ
Ростислав Иванович Кривоносов
Original Assignee
Алексей Сергеевич КАШИК
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 Алексей Сергеевич КАШИК filed Critical Алексей Сергеевич КАШИК
Publication of EA200400346A1 publication Critical patent/EA200400346A1/en
Publication of EA005902B1 publication Critical patent/EA005902B1/en

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  • Geophysics And Detection Of Objects (AREA)

Abstract

Изобретение относится к области геофизических исследований скважин и предназначено для определения электрического сопротивления пластов горных пород, окружающих обсаженную металлической колонной скважину. Сущность изобретения: используют зонд, состоящий из трех эквидистантных измерительных электродов и двух расположенных за пределами зоны измерительных электродов, симметрично относительно среднего измерительного электрода, токовых электродов. В колонну через первый (верхний) токовый электрод подают электрический ток в виде знакопеременных прямоугольных импульсов. Во второй (нижний) токовый электрод ток подают с выхода автокомпенсатора, который автоматически поддерживает равенство нулю разности потенциалов между крайними измерительными электродами. Потенциал электрического поля колонны в точке контакта с ней среднего измерительного электрода и вторую разность потенциалов на участке колонны между крайними измерительными электродами измеряют в промежутках времени гальванического возбуждения в каждом периоде тока после завершения индукционного переходного процесса. Удельное электрическое сопротивление определяют по соответствующей формуле. Технический результат: исключение индукционных наводок, искажающих результаты измерений.The invention relates to the field of geophysical research wells and is intended to determine the electrical resistance of the rock strata surrounding the cased metal well column. The inventive use of the probe, consisting of three equidistant measuring electrodes and two located outside the zone of the measuring electrodes, symmetrically with respect to the average measuring electrode, current electrodes. An electric current in the form of alternating rectangular pulses is fed into the column through the first (top) current electrode. In the second (lower) current electrode current is supplied from the output of the autocompensator, which automatically maintains the equality to zero of the potential difference between the extreme measuring electrodes. The potential of the electric field of the column at the point of contact with it of the average measuring electrode and the second potential difference in the section of the column between the extreme measuring electrodes are measured in time intervals of galvanic excitation in each current period after completion of the induction transient process. Electrical resistivity is determined by the appropriate formula. Technical result: the exclusion of induction interference, distorting the measurement results.

EA200400346A 2003-04-22 2004-03-23 Process of electric logging of cased well EA005902B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2003111430/28A RU2229735C1 (en) 2003-04-22 2003-04-22 Process of electric logging of cased well

Publications (2)

Publication Number Publication Date
EA200400346A1 true EA200400346A1 (en) 2004-10-28
EA005902B1 EA005902B1 (en) 2005-06-30

Family

ID=32679606

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200400346A EA005902B1 (en) 2003-04-22 2004-03-23 Process of electric logging of cased well

Country Status (2)

Country Link
EA (1) EA005902B1 (en)
RU (1) RU2229735C1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2302019C1 (en) * 2006-04-18 2007-06-27 Общество С Ограниченной Ответственностью "Интерлог" Method for electrical logging of cased wells
US7565244B2 (en) * 2007-06-27 2009-07-21 Schlumberger Technology Corporation Method and system for removing effects of conductive casings and wellbore and surface heterogeneity in electromagnetic imaging surveys
RU2382385C1 (en) * 2009-01-26 2010-02-20 Валентин Цой Method for electrical logging cased wells
RU2408039C1 (en) * 2009-12-07 2010-12-27 Николай Иванович РЫХЛИНСКИЙ Method of electrical logging of cased wells
RU2499284C2 (en) * 2011-09-28 2013-11-20 Закрытое акционерное общество Научно-производственная фирма "ГИТАС" (ЗАО НПФ "ГИТАС") Method of estimation of medium current induced polarisation in cased well borehole annulus
RU173699U1 (en) * 2011-12-16 2017-09-06 Цой Валентин Device for electric logging through a metal column
AU2015392091B2 (en) * 2015-04-23 2019-01-31 Halliburton Energy Services, Inc. Magnetic ranging using multiple downhole electrodes

Also Published As

Publication number Publication date
EA005902B1 (en) 2005-06-30
RU2229735C1 (en) 2004-05-27

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Designated state(s): AM KG MD TJ