SU623954A1 - Device for building up reverse circulation in borehole - Google Patents
Device for building up reverse circulation in boreholeInfo
- Publication number
- SU623954A1 SU623954A1 SU772470222A SU2470222A SU623954A1 SU 623954 A1 SU623954 A1 SU 623954A1 SU 772470222 A SU772470222 A SU 772470222A SU 2470222 A SU2470222 A SU 2470222A SU 623954 A1 SU623954 A1 SU 623954A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- well
- channel
- drilling
- nozzle
- reverse circulation
- Prior art date
Links
Landscapes
- Earth Drilling (AREA)
Description
Изобретение относитс к области бурени разведочных скважин, а именно к устройствам дл создани обратной циркул иич .The invention relates to the field of drilling exploration wells, namely, devices for creating reverse circulation.
Известны устройства дл создани обратной местной циркул ции очистных агентов iiOH колонковом бурении, предназначенные д.у( повышении качества и эффективности бурени . Эти устройства представл ют собой рлифтно-ннез-матические снар ды, делители потока с использованием различного рода уплотнителей (паккеров), поршневые и водоструйные насосы. Наибольшее распространение получают буровые снар ды с применением водоструйных насосов Л.Devices are known for creating reverse local circulation of cleaning agents iiOH column drilling designed for dr (improving the quality and efficiency of drilling. These devices are relief-non-mathematical shells, flow dividers using various kinds of seals (packers), piston and water jet pumps. Drillstones using water jet pumps L. are the most common.
Наиболее близким техническим решением к описываемому изобретению вл етс эжекторный буровой снар д, в котором устройство дл создани обратной циркул ции в скважине включает переходник, сопло, сообщаюпдеес с диффузором, и корпус с каналом дл обратного потока. Обратна циркул ци , в этих снар дах создаетс за счет эжекции разрежени во внутренней полости снар да 2.The closest technical solution to the described invention is an ejector drill, in which a device for creating reverse circulation in a well includes an adapter, a nozzle, communicating with a diffuser, and a housing with a channel for reverse flow. The reverse circulation in these projectiles is created by the ejection of a vacuum in the inner cavity of the projectile 2.
Облада простотой и отсутствием подвижнь1х быстроизнашивающихс деталей, известные эжекторные буровые снар ды имеют существенный недостаток, заключаюилийс в том, что перепад давлени жидкости в обратной циркул ционной системе обеспечиваетс за счет всасывани благодар зжекторному разрежению. Поэтому эжекторные буровые снар ды легко згшламовываютс с резким изменением режи.ма промывки до полного ее прекращени . Особенно ijiiacno дл таких снар дов наличие на забое столба шлама, превышающего 1.5-2 м. В этом случае образуетс шламова пробка, котора , как правило, не может быть разрушена существующим перепадом давлени .в местной циркул ционной системе.Possessing simplicity and the absence of movable wearing parts, the known ejector drill bits have a significant drawback, the conclusion is that the differential pressure of the fluid in the reverse circulation system is provided by suction due to the injection pressure. Therefore, ejector drills easily collapse with a drastic change in the flushing mode until it is completely stopped. Especially ijiiacno for such projectiles, the presence of a sludge column at the bottom exceeding 1.5-2 m. In this case, a sludge plug is formed which, as a rule, cannot be destroyed by the existing pressure drop in the local circulation system.
Целью изобретени вл етс повышение эффективности бурени за счет увеличени перепада давлени при обратной циркул ции .The aim of the invention is to increase the drilling efficiency by increasing the pressure differential during reverse circulation.
Цель достигаетс тгм, что сопло вьитолнено кольцевым, а диффузор образован наружной поверхностью корпуса, выполненной конусообразной, и стенками скважины, причем канал корпуса сообщаетс со скважинным пространством вьиие сопла.The goal is to achieve a TGM, that the nozzle is ring-filled, and the diffuser is formed by the outer surface of the body, made cone-shaped, and the walls of the well, and the channel of the body is connected to the well space of the nozzle.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772470222A SU623954A1 (en) | 1977-04-11 | 1977-04-11 | Device for building up reverse circulation in borehole |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772470222A SU623954A1 (en) | 1977-04-11 | 1977-04-11 | Device for building up reverse circulation in borehole |
Publications (1)
Publication Number | Publication Date |
---|---|
SU623954A1 true SU623954A1 (en) | 1978-09-15 |
Family
ID=20702561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU772470222A SU623954A1 (en) | 1977-04-11 | 1977-04-11 | Device for building up reverse circulation in borehole |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU623954A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4312415A (en) * | 1980-05-01 | 1982-01-26 | Well Tools, Inc. | Reverse circulating tool |
US4534426A (en) * | 1983-08-24 | 1985-08-13 | Unique Oil Tools, Inc. | Packer weighted and pressure differential method and apparatus for Big Hole drilling |
US4630691A (en) * | 1983-05-19 | 1986-12-23 | Hooper David W | Annulus bypass peripheral nozzle jet pump pressure differential drilling tool and method for well drilling |
WO2009065523A2 (en) * | 2007-11-22 | 2009-05-28 | Services Petroliers Schlumberger | Self-circulating drill bit |
-
1977
- 1977-04-11 SU SU772470222A patent/SU623954A1/en active
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4312415A (en) * | 1980-05-01 | 1982-01-26 | Well Tools, Inc. | Reverse circulating tool |
US4630691A (en) * | 1983-05-19 | 1986-12-23 | Hooper David W | Annulus bypass peripheral nozzle jet pump pressure differential drilling tool and method for well drilling |
US4534426A (en) * | 1983-08-24 | 1985-08-13 | Unique Oil Tools, Inc. | Packer weighted and pressure differential method and apparatus for Big Hole drilling |
WO2009065523A2 (en) * | 2007-11-22 | 2009-05-28 | Services Petroliers Schlumberger | Self-circulating drill bit |
WO2009065523A3 (en) * | 2007-11-22 | 2009-07-09 | Schlumberger Services Petrol | Self-circulating drill bit |
GB2454900B (en) * | 2007-11-22 | 2012-01-11 | Schlumberger Holdings | Self-circulating drill bit |
US8833490B2 (en) | 2007-11-22 | 2014-09-16 | Schlumberger Technology Corporation | Self-circulating drill bit |
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