SU550610A1 - The method of establishing the hydrodynamic interconnection of the layers - Google Patents

The method of establishing the hydrodynamic interconnection of the layers

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Publication number
SU550610A1
SU550610A1 SU2171003A SU2171003A SU550610A1 SU 550610 A1 SU550610 A1 SU 550610A1 SU 2171003 A SU2171003 A SU 2171003A SU 2171003 A SU2171003 A SU 2171003A SU 550610 A1 SU550610 A1 SU 550610A1
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USSR - Soviet Union
Prior art keywords
hydrodynamic
well
interconnection
establishing
formations
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SU2171003A
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Russian (ru)
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Леонид Митрофанович Федин
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Priority to SU2171003A priority Critical patent/SU550610A1/en
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Publication of SU550610A1 publication Critical patent/SU550610A1/en

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/30Assessment of water resources

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Description

1one

Изобретение относитс  к способу установлени  гидродинамической взаимосв зи пластов и может быть использовано дл  изучени  месторождений нефти, газа и подземных вод.The invention relates to a method for establishing a hydrodynamic interconnection of formations and can be used to study oil, gas and groundwater deposits.

Известен способ электрического каротажа скважин, заключаюш,ийс  в том, что в пласт ввод т сильный окисл юш;ий агент, измен ющий свойства пород. По данным электрокаротажа до и после воздействи  суд т о литологии пласта 1.The known method of electric logging of wells, concludes with the fact that a strong oxidation agent is introduced into the formation, and an agent that changes the properties of rocks. According to electric-logging data, before and after the impact, the formation lithology 1 is judged.

Однако этот способ не дает сведений о гидродинамической св зи пластов.However, this method does not provide information about the hydrodynamic coupling of the formations.

Известен также способ установлени  гидродинамической сваимосв зи пластов (гидропрослушивание ), заключающийс  в прослеживании изменений давлени  в реагирующей скважине, которые вызваны искусственным или естественным изменением режима работы возмущающей скважины 2.There is also known a method for establishing a hydrodynamic connection of formations (hydraulic interception), which consists in tracking the changes in pressure in a reacting well, which are caused by an artificial or natural change in the operating mode of the perturbation well 2.

Распростран  сь от возмущающей скважины по проницаемому пласту, волна давлени  достигает реагирующей скважины и вызывает изменение давлени  в ее стволе, которое регистрируетс  с помощью дифференциальных (реже максимальных) манометров, устанавливаемых на забое скважины.Spreading from the perturbation well over the permeable formation, the pressure wave reaches the reacting well and causes a pressure change in its wellbore, which is recorded using differential (less often maximum) gauges mounted on the bottom of the well.

Этот способ исключает возможность использовани  в качестве реагирующих необсаженных скважин, дренирующих более одного проницаемого пласта.This method eliminates the possibility of using as reactive open hole wells draining more than one permeable formation.

Если реагирующа  скважина обсажена колонной труб и дренирует более чем один проницаемый пласт, то при использовании дл  регистрации изменени  давлени  манометровIf the reactive well is surrounded by a casing and drains more than one permeable formation, then when used to record the pressure change of the gauges

неизвестно, по какому из проницаемых пластов волна давлени  достигает реагирующей скважины.It is not known by which of the permeable formations the pressure wave reaches the reacting well.

Волна давлени , пришедша  по любому проницаемому пласту, вызывает изменениеA pressure wave coming along any permeable formation causes a change in

давлени  в стволе скважины, которое регистрируетс  манометрами.pressure in the wellbore, which is recorded by pressure gauges.

С целью расширени  возможиостей способа устаиовлени  гидродинамической взаимосв зи пластов измер ют электрические параметрыIn order to expand the capabilities of the method of stabilizing the hydrodynamic interconnection of the layers, the electrical parameters are measured.

пород необсаженных скважин в функции времени , начина  с момента создани  импульса давлени  в возмущающей скважине, и по изменению электрических параметров суд т о наличии гидродинамической взаимосв зи исследуемых пластов.rocks of uncased wells as a function of time, starting from the moment of creating a pressure pulse in a perturbing well, and by the change of electrical parameters, the presence of the hydrodynamic interconnection of the formations being investigated is judged.

Изменение электрического сопротивлени  прискважинной части пластов  вл етс  следствием изменени  глубины зоны проникновени  фильтрата промывочной жидкости в пласте,The change in the electrical resistance of the near-wellbore part of the formations is a consequence of a change in the depth of the penetration zone of the wash liquid filtrate in the formation,

по которому волна давлени , созданна  в возмущающей скважине, достигает реагирующей скважины.along which the pressure wave created in the perturbing well reaches the reacting well.

Выведенна  из состо ни  равновеси  (под действием волны давлени ) гидродинамическа  система «проницаемый пласт-реагирующа  скважина возвращаетс  затем в первоначальное состо ние через колебательный процесс. Колебательные движени  совершает и граница зоны проникновени  в пласте, а следовательно, измен етс  и электрическое сопротивление прискважинной части пласта.The out-of-balance (under the action of a pressure wave) hydrodynamic system "permeable reservoir-reactive well" then returns to its original state through an oscillatory process. Oscillatory movements are made by the boundary of the zone of penetration in the reservoir, and, consequently, the electrical resistance of the near-well part of the reservoir also changes.

В пластах, не имеющих гидродинамической взаимосв зи с возмущающей скважиной, электрическое сопротивление прискважинной части остаетс  неизменным.In formations that do not have a hydrodynamic relationship with a perturbation well, the electrical resistance of the near-well part remains unchanged.

Реализуетс  способ следующим образом.The method is implemented as follows.

В реагирующей скважине провод т контрольный замер электрического сопротивлени  не менее чем трем  зондовыми установками разных размеров (аппаратурой БКС, БК-7 или КСП). Измен ют режим работы возмущающей скважины путем создани  импульса давлени  и, начина  с момента создани  импульса давлени  в возмущающей скважине, измер ют электрическое сопротивление пород в реагирующей скважине теми же зондовыми установками до тех пор, пока не устанавливаетс  изменение электрического сопротивлени  пластов.In a reacting well, control measurements of electrical resistance are carried out with at least three probe installations of various sizes (with BCS, BC-7 or PCB instruments). The operation mode of the perturbation well is changed by creating a pressure pulse and, starting from the moment of creating the pressure pulse in the perturbing well, the electrical resistance of the rocks in the reacting well is measured by the same probe installations until a change in the formation electrical resistance is established.

Признаком гидродинамической взаимосв зи пластов служит изменение их электрического сопротивлени в реагирующей скважине.A sign of the hydrodynamic interconnection of the formations is the change in their electrical resistance in the reacting well.

Реализаци  данного способа позвол ет использовать в качестве реагирующих необсаженные скважины дл  установлени  гидродинамической взаимосв зи пластов, что важно на стадии разведки месторождений нефти, газа и подземных вод.The implementation of this method makes it possible to use open-hole wells as reactive for establishing the hydrodynamic interconnection of the formations, which is important at the exploration stage of oil, gas and groundwater deposits.

Большой практический интерес может представл ть реализаци  предлагаемого способа дл  изучени  нефт ных, газовых и месторождений подземных вод.Of great practical interest may be the implementation of the proposed method for studying oil, gas and groundwater fields.

Claims (2)

1. Патент США № 2691757, кл. 324-1, опублик . 1952.1. US patent No. 2691757, cl. 324-1, pub. 1952. 2. Каменецкий С. Г. Нефтепромысловые исследовани  пластов, изд. «Недра, М., 1974, с. 14-17 (прототип).2. Kamenetsky S., Oilfield reservoir studies, ed. “Nedra, M., 1974, p. 14-17 (prototype).
SU2171003A 1975-09-04 1975-09-04 The method of establishing the hydrodynamic interconnection of the layers SU550610A1 (en)

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