RU95101474A - Method of reverse cementing of casing strings in well - Google Patents

Method of reverse cementing of casing strings in well

Info

Publication number
RU95101474A
RU95101474A RU95101474/03A RU95101474A RU95101474A RU 95101474 A RU95101474 A RU 95101474A RU 95101474/03 A RU95101474/03 A RU 95101474/03A RU 95101474 A RU95101474 A RU 95101474A RU 95101474 A RU95101474 A RU 95101474A
Authority
RU
Russia
Prior art keywords
casing
grouting mortar
string
injection
pipe string
Prior art date
Application number
RU95101474/03A
Other languages
Russian (ru)
Other versions
RU2086752C1 (en
Inventor
А.П. Пермяков
А.С. Утробин
В.К. Андреев
В.С. Танычев
С.И. Романов
Р.Г. Туктамышев
Original Assignee
А.П. Пермяков
А.С. Утробин
В.К. Андреев
В.С. Танычев
С.И. Романов
Р.Г. Туктамышев
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 А.П. Пермяков, А.С. Утробин, В.К. Андреев, В.С. Танычев, С.И. Романов, Р.Г. Туктамышев filed Critical А.П. Пермяков
Priority to RU95101474A priority Critical patent/RU2086752C1/en
Publication of RU95101474A publication Critical patent/RU95101474A/en
Application granted granted Critical
Publication of RU2086752C1 publication Critical patent/RU2086752C1/en

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  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

FIELD: mining. SUBSTANCE: poppet check valve is installed on lower end of casing string run into well. Poppet check valve opens under the action of force from top to bottom. Prior to injection of grouting mortar into annular space, washover pipe string and pipe string-casing annular filled with fluid and back pressure is built up, after which, washover pipe string is lowered down to open spring-loaded poppet check valve, and grouting mortar is injected to casing string-borehole annulus, and the value of back pressure is regulated on the flow line of washover pipe string at wellhead, and quality of grouting mortar is controlled. Injection of grouting mortar to casing string-borehole annulus is determined by appearance from flow line of washover pipe string at wellhead of grouting mortar of the required composition. EFFECT: reduced time and material expenditures and means for casing cementation in well and higher quality of cementation under any mining and geological conditions injection of grouting mortar of any density at any velocity and pressure and reaching of casing shoe with grouting mortar of the required properties with full exclusion of its getting into casing string.

Claims (1)

Изобретение относится к области горнего дела. Цель: сокращение времени, материальных затрат и средств на цементирование обсадной колонны (ОК) в скважине (С), повышение качества цементирования в любых горно-геологических условиях, обеспечивая закачку тампонажного раствора (ТР) любой плотности, на любой скорости и при любом давлении и достижение башмака обсадной колонны ТР с требуемыми свойствами при полном исключении его проникновения внутрь ОК. Сущность: на нижний конец ОК, опускаемой в С, устанавливают подпружиненный обратный клапан (ПОК) тарельчатого типа, открываемый от воздействия усилия сверху вниз, перед закачкой ТР в затрубье колонну промывочных труб (КПТ) и межтрубное пространство (МП) в ОК заполняют жидкостью и создают противодавление, после чего КПТ опускают вниз, открывая ИСК, и ведут закачку ТР в затрубье, а на выкидной линии КПТ на устье скважины производят регулирование величины противодавления и ведут контроль за качеством ТР. Окончание закачки ТР в затрубье устанавливают по появлению из выкидной линии КПТ на устье скважины ТР требуемого состава.The invention relates to the field of mining. Purpose: reduction of time, material costs and means for cementing the casing string (OK) in the well (C), improving the quality of cementing in any mining and geological conditions, providing injection of cement slurry (TP) of any density, at any speed and at any pressure and the achievement of the shoe casing TR with the required properties with the complete exclusion of its penetration inside the OK. Essence: on the lower end of OK, lowered into C, a spring-loaded poppet type check valve (POC) is installed, opened from the influence of force from top to bottom, before the injection of TP into the annulus, the flushing pipe string (CPT) and the annular space (MP) in the OC are filled with liquid and create backpressure, after which the CBT is lowered down, opening the ISK, and the TP is pumped into the annulus, and the back pressure is regulated at the wellhead flow line at the wellhead and the TP is monitored. The end of the injection of TP in the annulus is established by the appearance of the required composition from the flow line of the CBT at the wellhead of the TP.
RU95101474A 1995-02-15 1995-02-15 Method for back-cementation of casing string in well RU2086752C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU95101474A RU2086752C1 (en) 1995-02-15 1995-02-15 Method for back-cementation of casing string in well

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU95101474A RU2086752C1 (en) 1995-02-15 1995-02-15 Method for back-cementation of casing string in well

Publications (2)

Publication Number Publication Date
RU95101474A true RU95101474A (en) 1996-12-20
RU2086752C1 RU2086752C1 (en) 1997-08-10

Family

ID=20164474

Family Applications (1)

Application Number Title Priority Date Filing Date
RU95101474A RU2086752C1 (en) 1995-02-15 1995-02-15 Method for back-cementation of casing string in well

Country Status (1)

Country Link
RU (1) RU2086752C1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6920929B2 (en) * 2003-03-12 2005-07-26 Halliburton Energy Services, Inc. Reverse circulation cementing system and method
US7013971B2 (en) * 2003-05-21 2006-03-21 Halliburton Energy Services, Inc. Reverse circulation cementing process
US7204304B2 (en) 2004-02-25 2007-04-17 Halliburton Energy Services, Inc. Removable surface pack-off device for reverse cementing applications
US7322412B2 (en) 2004-08-30 2008-01-29 Halliburton Energy Services, Inc. Casing shoes and methods of reverse-circulation cementing of casing
US7303008B2 (en) * 2004-10-26 2007-12-04 Halliburton Energy Services, Inc. Methods and systems for reverse-circulation cementing in subterranean formations
US7654324B2 (en) 2007-07-16 2010-02-02 Halliburton Energy Services, Inc. Reverse-circulation cementing of surface casing

Also Published As

Publication number Publication date
RU2086752C1 (en) 1997-08-10

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Legal Events

Date Code Title Description
MM4A The patent is invalid due to non-payment of fees

Effective date: 20080216