SU678180A1 - Method of preventing cramping of casings in boreholes upon re-freezing - Google Patents
Method of preventing cramping of casings in boreholes upon re-freezingInfo
- Publication number
- SU678180A1 SU678180A1 SU782594149A SU2594149A SU678180A1 SU 678180 A1 SU678180 A1 SU 678180A1 SU 782594149 A SU782594149 A SU 782594149A SU 2594149 A SU2594149 A SU 2594149A SU 678180 A1 SU678180 A1 SU 678180A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- freezing
- boreholes
- casings
- preventing
- cramping
- Prior art date
Links
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Description
1one
Изобрете:-ше относитс к ефтегазодобьшакшей промышлгнпости и Предназначено дл прсдстврашеиш см ти колонн скважин в период временного просто при обратном прюмерзании вечкомерзлых пород.In the invention: refers to the gas and oil industry and is intended to preserve the well columns in the period of the temporary just frozen permafrost.
Известен способ предотвраасни см ти колонн скважин, основанный на создании канала, параллельного колоне. Его создают посредством перфорированной трубки, размещенной р дом с колонкой скважшы. Через нее во избежаже давлени откачиваетс избыточна жидкость на поверхность И.There is a known method to prevent the see of well columns, based on the creation of a channel parallel to the column. It is created by means of a perforated tube placed near the wellbore column. Through it, in order to avoid pressure, excess fluid is pumped out to the surface I.
Однако дл предотЕрзщегш образовани лед ных пробок в псрфорирозанную трубу необходамо периодически подавать незамерзающую жидгсость, что требует дог1ол штельно.й тех1шки и ее обслуживани .However, in order to prevent the formation of ice plugs in a perforated pipe, it is necessary to periodically deliver antifreeze liquid, which requires a double-sided pipe and its maintenance.
Известен также способ предотвращени см те колонн CKsa/ioiH при обратном промерзазги, основанный на создании с помощью каналообразованэ канала, расшлагающегос вдоль колонны 2.There is also known a method of preventing see-columns of CKsa / ioiH during reverse freezing, based on the creation by means of a channel-forming channel spreading along column 2.
Недостаток способа состоит в том, что, он гребует на нагревание кабетл больив« расходовThe disadvantage of this method is that it rows on the heating of a capetl most of the "costs
электрдаеской энергии и сложной системы злектрическоГ) защиты устьевой арматуры.electrical energy and complex electrical system) protection of wellhead fittings.
Цель изобретени - упрошение способа.The purpose of the invention is to simplify the method.
Цель достигает(| тем, что в качестве каналообразовател примен ют металлическую гофрированную трубку, котора заполнена незамерзающей жнгшостыо.The goal is achieved (| by the fact that a metal corrugated tube is used as a duct former, which is filled with an antifreeze cable.
На чертеже представлена схема, по сн юща способ.The drawing shows a diagram explaining the method.
Параллельно колонне 1 в интервал кавернообразозаки ве шомерзлых пород 2 помещают металлическую гофрированную герметичную трубу 3, заполненную незамерзающей жидкостью.In parallel with the column 1, a corrugated sealed metal pipe 3 filled with antifreeze liquid is placed in the interval of the cavern-like ridge rocks of the shoddy rocks 2.
Избыточное давление ж: дкост11 заколонкой, возникающее в замкнутых объемах, передаетс Overpressure w: dcost11 pin, occurring in confined spaces, is transmitted
5 через TpyOKis 3 с незамерзающей жидкостью. Под действием давлени жидкости трубка 3 стремитс -дпин тьс , работа как сильфон, но этому преп тствуют окружающие мерзлые породы. При досглжении определенного давлени трубка 5 through TpyOKis 3 with non-freezing liquid. Under the action of the pressure of the liquid, the tube 3 tends to be pushed in, working like a bellows, but this is hampered by the surrounding frozen rocks. When a certain pressure is reached, the tube
Э 3 удлшшетс и разрущаст окружающую мерзлую породу. Образуетс канал, по которому жидкость 33 колонной, создаютс избыточное давление в замкнутых объемах 4, перепускаетс из одногоO 3 udlshshets and destroy the surrounding frozen rock. A channel is formed through which the liquid 33 is piled up, an overpressure is created in confined volumes 4, it is bypassed from one
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782594149A SU678180A1 (en) | 1978-03-21 | 1978-03-21 | Method of preventing cramping of casings in boreholes upon re-freezing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782594149A SU678180A1 (en) | 1978-03-21 | 1978-03-21 | Method of preventing cramping of casings in boreholes upon re-freezing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU678180A1 true SU678180A1 (en) | 1979-08-05 |
Family
ID=20755109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU782594149A SU678180A1 (en) | 1978-03-21 | 1978-03-21 | Method of preventing cramping of casings in boreholes upon re-freezing |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU678180A1 (en) |
-
1978
- 1978-03-21 SU SU782594149A patent/SU678180A1/en active
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