CN205089271U - Top is driven flexible well head of rig and is prevented junk device - Google Patents

Top is driven flexible well head of rig and is prevented junk device Download PDF

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Publication number
CN205089271U
CN205089271U CN201520852240.4U CN201520852240U CN205089271U CN 205089271 U CN205089271 U CN 205089271U CN 201520852240 U CN201520852240 U CN 201520852240U CN 205089271 U CN205089271 U CN 205089271U
Authority
CN
China
Prior art keywords
well head
protective cover
plane
junk
circular recess
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
CN201520852240.4U
Other languages
Chinese (zh)
Inventor
杨全枝
于小龙
赵毅
王红娟
张杨
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.)
Shaanxi Yanchang Petroleum Group Co Ltd
Original Assignee
Shaanxi Yanchang Petroleum Group Co Ltd
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 Shaanxi Yanchang Petroleum Group Co Ltd filed Critical Shaanxi Yanchang Petroleum Group Co Ltd
Priority to CN201520852240.4U priority Critical patent/CN205089271U/en
Application granted granted Critical
Publication of CN205089271U publication Critical patent/CN205089271U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a well head protector, especially the junk device is prevented to a flexible well head that is used for the top to drive the rig well drilling. Top is driven flexible well head of rig and is prevented junk device, including base and protective cover, the base includes well head link and the circular recess that links to each other, and the well head link stretches into inside the well head, the protective cover set up in the circular recess and with the circular recess flexonics, the protective cover is the round platform compriseed top plane and inclined plane, and the processing of top plane center has the round hole, and the round hole size is greater than the drilling string external diameter, round hole and inclined plane pass through the breach intercommunication, the breach aperture is greater than the drilling rod diameter, is less than the tool joint diameter the utility model discloses with the protective cover through the base place well head top in order preventing the well head junk, the protective cover design is round platform shape, the protective cover setting in the circular recess and with the circular recess flexonics, steadily, vibrate for a short time in the use, the utility model discloses simple structure, convenient operation.

Description

The flexible wellhead anti-falling device of top drive drilling
Technical field
The utility model relates to a kind of well mouth protector, especially a kind of flexible wellhead anti-falling device for top drive drilling drilling well.
Background technology
Promoting the use of of top drive drilling, greatly reduces the labour intensity that driller makes a trip, makes up a joint, shortens drilling period.Owing to adopting stand drilling, instead of the parts such as the kelly bar of conventional rotary disk driller, master bushing, in drilling process, well head often directly opens wide, the instrument such as screwdriver, spanner of drilling floor surface, gadget is easy especially falls into well from well head for nut nuts etc., causes down-hole accident.In on-the-spot actual mechanical process, drilling team is enclosed within well head drill string often by the iron plate of simple and easy processing, and to prevent well head junk, in drilling process, iron plate is often with drill string strenuous vibration, causes potential safety hazard to rig floor work.
Summary of the invention
The utility model is intended to propose a kind of flexible wellhead anti-falling device for top drive drilling, to solve the well head safe protection question in top drive drilling drilling process.This device can effectively prevent the foreign material of drilling floor surface from falling into well from well head in drilling process.
The technical solution of the utility model is:
The flexible wellhead anti-falling device of top drive drilling, comprise base and protective cover, described base comprises connected well head link and circular trough, and well head link stretches into well head inside; Protective cover to be arranged in circular trough and to flexibly connect with circular trough; Protective cover is the round platform be made up of top planes and inclined-plane, and top planes center is processed with circular hole, and circular hole size is greater than drill string external diameter; Described circular hole is communicated with by breach with inclined-plane, and described breach aperture is greater than drill pipe diameter, is less than tool joint diameter
The top planes of described protective cover and circular trough are equipped with group leader's square opening.
Technique effect of the present utility model is:
Protective cover is placed on to prevent well head junk above well head by base by the utility model, and protective cover is designed to round platform, and protective cover to be arranged in circular trough and to flexibly connect with circular trough, in use steadily, vibrates little; The utility model structure is simple, easy to operate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the flexible wellhead anti-falling device of the utility model top drive drilling.
Fig. 2 is the protecting cover structure schematic diagram of the flexible wellhead anti-falling device of the utility model top drive drilling.
Wherein, 1-base, 2-protective cover, 3-inclined-plane, 4-top planes, 5-circular hole, 6-slot, 7-circular trough, 8-well head link, 9-breach.
Detailed description of the invention
The flexible wellhead anti-falling device of top drive drilling, comprise base 1 and protective cover 2, described base 1 comprises connected well head link 8 and circular trough 7, and well head link 8 stretches into well head inside; Protective cover 2 to be arranged in circular trough 7 and to flexibly connect with circular trough 7, and protective cover 2 is the round platform be made up of top planes 4 and inclined-plane 3, and top planes 4 center is processed with circular hole 5, and circular hole 5 size is greater than drill string external diameter and is provided with 45 ° of chamferings; Circular hole 5 is communicated with by breach 9 with inclined-plane 3, and described breach 9 aperture is greater than drill pipe diameter, is less than tool joint diameter.The top planes 4 of protective cover 2 and circular trough 7 are equipped with group leader's square opening 6.
Well head link 8 in use, is connected with well head by the utility model; By top planes 4 circular hole 5 of drill string by protective cover 2, breach 9 is by drilling rod body, and protective cover 2 is installed in the circular trough 7 of base 1, then top is driven and just can normally be crept into, be greater than the external diameter of the joint of use drill string used due to circular hole 5 diameter and carry out 45 degree of chamfered, drill string can remove smoothly.Can be moved it by the slot 6-2 on the slot 6-1 of the top planes 4 of protective cover 2 and circular trough 7.

Claims (3)

1. the flexible wellhead anti-falling device of top drive drilling, it is characterized in that: comprise base (1) and protective cover (2), described base (1) comprises connected well head link (8) and circular trough (7), and well head link (8) stretches into well head inside; Protective cover (2) to be arranged in circular trough (7) and to flexibly connect with circular trough (7); Protective cover (2) is the round platform be made up of top planes (4) and inclined-plane (3), and top planes (4) center is processed with circular hole (5), and circular hole (5) size is greater than drill string external diameter; Described circular hole (5) is communicated with by breach (9) with inclined-plane (3), and described breach (9) aperture is greater than drill pipe diameter, is less than tool joint diameter.
2. the flexible wellhead anti-falling device of a kind of top drive drilling according to claim 1, is characterized in that: described circular hole (5) is provided with 45 ° of chamferings.
3. the flexible wellhead anti-falling device of a kind of top drive drilling according to claim 1, is characterized in that: the top planes (4) of described protective cover (2) and circular trough (7) are equipped with group leader's square opening (6).
CN201520852240.4U 2015-10-30 2015-10-30 Top is driven flexible well head of rig and is prevented junk device Expired - Fee Related CN205089271U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520852240.4U CN205089271U (en) 2015-10-30 2015-10-30 Top is driven flexible well head of rig and is prevented junk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520852240.4U CN205089271U (en) 2015-10-30 2015-10-30 Top is driven flexible well head of rig and is prevented junk device

Publications (1)

Publication Number Publication Date
CN205089271U true CN205089271U (en) 2016-03-16

Family

ID=55479972

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520852240.4U Expired - Fee Related CN205089271U (en) 2015-10-30 2015-10-30 Top is driven flexible well head of rig and is prevented junk device

Country Status (1)

Country Link
CN (1) CN205089271U (en)

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Legal Events

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

Granted publication date: 20160316

Termination date: 20201030

CF01 Termination of patent right due to non-payment of annual fee