CN203335031U - Multilateral deep well emergency flow guide switch - Google Patents

Multilateral deep well emergency flow guide switch Download PDF

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Publication number
CN203335031U
CN203335031U CN2013203536435U CN201320353643U CN203335031U CN 203335031 U CN203335031 U CN 203335031U CN 2013203536435 U CN2013203536435 U CN 2013203536435U CN 201320353643 U CN201320353643 U CN 201320353643U CN 203335031 U CN203335031 U CN 203335031U
Authority
CN
China
Prior art keywords
piston
multilateral
flow guide
deep
outer tube
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CN2013203536435U
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Chinese (zh)
Inventor
杨林
李敏
尚宪飞
邓旭
陈振刚
李虎
赵展
高扬
李庆乐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CNPC Great Wall Drilling Co
Original Assignee
CNPC Great Wall Drilling Co
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 CNPC Great Wall Drilling Co filed Critical CNPC Great Wall Drilling Co
Priority to CN2013203536435U priority Critical patent/CN203335031U/en
Application granted granted Critical
Publication of CN203335031U publication Critical patent/CN203335031U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to the technical field of multilateral deep wells, in particular to a multilateral deep well emergency flow guide switch. According to the multilateral deep well emergency flow guide switch, the outer wall of the upper end of a lower connector is connected with an upper connector; a jackscrew is installed on the upper connector; an outer pipe is connected to the outer wall of the lower end of the upper connector; a piston is installed in annular space formed by the lower connector and the outer pipe, and is connected to the inner wall of the outer pipe through a shear pin; an inner flow guide hole is formed in the position, at the upper end of the piston, on the lower connector; an outer flow guide hole is formed in the position, at the lower end of the piston, on the outer pipe. When hydraulic tools can not work normally, normal circulation channels can be built inside and outside a drill rod in an annular mode, eliminate complex underground accidents and reduce well control risks. The multilateral deep well emergency flow guide switch overcomes the defect that an existing hydraulic tool of multilateral deep wells can not normally work usually.

Description

A kind of deep-well Multilateral Wells diversion switch of meeting an urgent need
Technical field:
The utility model relates to a kind of deep-well Multilateral Wells technical field, particularly the emergent diversion switch of a kind of deep-well Multilateral Wells.
Background technology:
Domestic main force oil field has entered the exploitation middle and later periods, the complex reservoirs such as that residual recoverable reserves is distributed in mostly is hypotonic, low pressure, deep buried hill, and exploration and development also just strides forward towards deep formation.
At present, facts have proved that deep-well, ultradeep well adopt the Multilateral Wells exploitation can realize the wide-spaced well high yield, improve the remaining oil recovery ratio, but, the deep-well Multilateral Wells is difficult to normal operation because deep-well stratum external pressure (confined pressure) height causes hydraulic tool, and often can't normal circulation after the hydraulic tool pitching, give and process down hole problem and bring many technical barriers.
The utility model content:
The technical problems to be solved in the utility model is to provide the emergent diversion switch of a kind of deep-well Multilateral Wells, this device has been realized when hydraulic tool can't work, can set up normal circulation canal at the inside and outside annular space of drilling rod, get rid of the down-hole complex accident, reduce the well control risk.Overcome the deficiency that existing deep-well Multilateral Wells hydraulic tool often can't work.
Technical solution adopted in the utility model is: a kind of deep-well Multilateral Wells diversion switch of meeting an urgent need comprises lower contact and top connection; Lower contact upper end outer wall is connected with top connection, jackscrew is installed in top connection, connect outer tube on the outer wall of top connection lower end, in the annular space of lower contact and outer tube composition, piston is installed, piston is connected on outer tube wall by shear pin, lower contact in the piston upper end has interior pod apertures, has outer pod apertures on the outer tube of piston lower end.
Between lower contact and piston, between piston and outer tube, all sealed by the O RunddichtringO between outer tube and top connection.
Shear pin 3 is designed to when pressure reaches 35MPa, to be cut off.
The beneficial effects of the utility model are: the utility model is owing to having adopted piston to control the connection of inside and outside pod apertures, thereby have when hydraulic tool can't work and can set up at the inside and outside annular space of drilling rod the function of normal circulation canal, get rid of the down-hole complex accident, reduce the well control risk.
The accompanying drawing explanation:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
The specific embodiment:
As shown in Figure 1, a kind of deep-well Multilateral Wells diversion switch of meeting an urgent need, comprise lower contact 1 and top connection 6; Lower contact 1 upper end outer wall is connected with top connection 6, jackscrew 7 is installed in top connection 6, connect outer tube 2 on top connection 6 lower end outer walls, in the annular space formed at lower contact 1 and outer tube 2, piston 4 is installed, piston 4 is connected on outer tube 2 inwalls by shear pin 3, lower contact 1 in piston 4 upper ends has interior pod apertures, on the outer tube 2 of piston 4 lower ends, has outer pod apertures.Between lower contact 1 and piston 4, between piston 4 and outer tube 2, all sealed by O RunddichtringO 5 between outer tube 2 and top connection 6.Shear pin 3 is designed to when pressure reaches 35MPa, to be cut off.
When deep-well Multilateral Wells hydraulic tool works, the circulation canal of interior pod apertures and outer pod apertures is closed, and guarantees that hydraulic tool builds the pressure to move not pressure release.When occurring that hydraulic tool is malfunctioning, pressure surpasses shear pin 3 shear pressures, shear pin 3 is cut off, piston 4 moves, expose outer pod apertures, the circulation canal of interior pod apertures and outer pod apertures is opened, guaranteed that normal circulation makes a trip in the situation that the bottom hydraulic tool is malfunctioning, circulation passage blocks.
Be understandable that, above about specific descriptions of the present utility model, only for being described, the utility model not is limited to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as meet, all within protection domain of the present utility model.

Claims (3)

1. the emergent diversion switch of deep-well Multilateral Wells, comprise lower contact (1) and top connection (6); It is characterized in that: lower contact (1) upper end outer wall is connected with top connection (6), jackscrew (7) is installed in top connection (6), connect outer tube (2) on the outer wall of top connection (6) lower end, in the annular space formed at lower contact (1) and outer tube (2), piston (4) is installed, piston (4) is connected on outer tube (2) inwall by shear pin (3), lower contact (1) in piston (4) upper end has interior pod apertures, on the outer tube (2) of piston (4) lower end, has outer pod apertures.
2. according to the emergent diversion switch of deep-well Multilateral Wells claimed in claim 1, it is characterized in that: between described lower contact (1) and piston (4), between piston (4) and outer tube (2), all sealed by O RunddichtringO (5) between outer tube (2) and top connection (6).
3. according to the emergent diversion switch of deep-well Multilateral Wells claimed in claim 1, it is characterized in that: described shear pin (3) is designed to when pressure reaches 35MPa, to be cut off.
CN2013203536435U 2013-06-20 2013-06-20 Multilateral deep well emergency flow guide switch Expired - Fee Related CN203335031U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013203536435U CN203335031U (en) 2013-06-20 2013-06-20 Multilateral deep well emergency flow guide switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013203536435U CN203335031U (en) 2013-06-20 2013-06-20 Multilateral deep well emergency flow guide switch

Publications (1)

Publication Number Publication Date
CN203335031U true CN203335031U (en) 2013-12-11

Family

ID=49703709

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013203536435U Expired - Fee Related CN203335031U (en) 2013-06-20 2013-06-20 Multilateral deep well emergency flow guide switch

Country Status (1)

Country Link
CN (1) CN203335031U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111155966A (en) * 2019-12-28 2020-05-15 中海油能源发展股份有限公司 Underground annular emergency opening device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111155966A (en) * 2019-12-28 2020-05-15 中海油能源发展股份有限公司 Underground annular emergency opening device
CN111155966B (en) * 2019-12-28 2022-02-25 中海油能源发展股份有限公司 Underground annular emergency opening device

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131211

Termination date: 20140620

EXPY Termination of patent right or utility model