CN202266210U - Continuous circulation drilling device - Google Patents

Continuous circulation drilling device Download PDF

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Publication number
CN202266210U
CN202266210U CN 201120358339 CN201120358339U CN202266210U CN 202266210 U CN202266210 U CN 202266210U CN 201120358339 CN201120358339 CN 201120358339 CN 201120358339 U CN201120358339 U CN 201120358339U CN 202266210 U CN202266210 U CN 202266210U
Authority
CN
China
Prior art keywords
drilling
connector
drilling fluid
hydraulic
circulation
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
CN 201120358339
Other languages
Chinese (zh)
Inventor
张微
陆洋阳
王佳露
李彬
唐亮
曾艳春
赵炎
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 CN 201120358339 priority Critical patent/CN202266210U/en
Application granted granted Critical
Publication of CN202266210U publication Critical patent/CN202266210U/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 oilfield drilling, in particular to a continuous circulation drilling device. A connector system of the device mainly comprises a connector aligning and buckling device, an upper half-closed flashboard blowout preventer, a full-closed flashboard blowout preventer, a lower half-closed flashboard blowout preventer and a connector slip from top to bottom; a control system is connected with a hydraulic system which is connected with controlled components respectively; a top drive connection system is hung on the lower part of a top drive through a hanging ring; the top drive connection system mainly comprises a pair of hydraulic pliers and a double-sided elevator; and one end of a drilling fluid splitting system is connected to a drilling pump, and the other end of the drilling fluid splitting system is connected with the connector system and a stand pipe. Through the continuous circulation drilling device, a drilling rod can be buckled and unbuckled on the premise of keeping the continuous circulation of drilling fluid, so that the stability of underground pressure is ensured, and the circulation of the drilling fluid is not influenced. The defect that the circulation of the drilling fluid is required to be interrupted to finish operation processes of making a connection, making a trip and the like during drilling in the prior art is overcome.

Description

A kind of continuous circulating drilling device
Technical field:
The utility model relates to a kind of oil drilling technical field, particularly a kind of continuous circulating drilling device.
Background technology:
In the tradition rotary drilling process; Accomplish operations such as making up a joint, make a trip owing to need to interrupt circulation of drilling fluid in the drilling process, thereby cause the down-hole pressure fluctuation easily and the drilling fluid long period of soaking borehole wall that causes because of stopping to circulate causes caving in and down hole problem such as drilling cuttings deposition.
The utility model content:
The technical problem that the utility model will solve provides a kind of continuous circulating drilling device, and this device has been realized and can on completion drilling rod under the preceding dike that keeps drilling fluid to circulate continuously, shackle have been operated, thereby the assurance down-hole pressure is stable, and it is unaffected to circulate.Overcome prior art and in drilling process, needed to interrupt the deficiency that circulation of drilling fluid is accomplished operations such as making up a joint, make a trip.
The technical scheme that the utility model is taked is: a kind of continuous circulating drilling device comprises pushing up and drives connected system, drilling fluid separate system, connector system, control system and hydraulic system; Connector system mainly aligns spin-up chain, first envelope ram preventer, blind rams preventer, second envelope ram preventer and connector slips by connector from top to bottom and forms; The control system is connected with hydraulic system; Hydraulic system is connected with controlled assembly respectively again; The top is driven connected system and is suspended on the top through suspension ring and drives the bottom; The top is driven connected system and mainly is made up of hydraulic tongs and two-sided elevator, and drilling fluid separate system one end is connected on the borehole pump, and an end is connected with connector system and standpipe respectively.
The beneficial effect of the utility model is: the utility model is owing to adopted connector system; Thereby have and to make up a joint, to unload in drilling well in the single operating process; The function of the continuous circulation of not termination of pumping, assurance drilling fluid; Thereby reduce the down-hole pressure fluctuation that causes because of termination of pumping and the drilling fluid long period of soaking borehole wall that causes because of stopping to circulate causes caving in and down hole problem such as drilling cuttings deposition, normally the carrying out of assurance extended reach well, long horizontal segment horizontal well, deep well and special responsive well construction.
Description of drawings:
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
Accompanying drawing is the structural representation of the utility model.
The specific embodiment:
Shown in accompanying drawing, a kind of continuous circulating drilling device comprises pushing up and drives connected system 1, drilling fluid separate system 9, connector system 10, control system 11 and hydraulic system 12; Connector system 10 mainly aligns spin-up chain 2, first envelope ram preventer 6, blind rams preventer 7, second envelope ram preventer 8 and connector slips 5 by connector from top to bottom and forms; Three ram preventers and tube chamber can constitute the pressure pocket of two sealings such as the pressure pocket of connector epicoele 3, connector cavity of resorption 4 or a sealing, and each chamber has drilling fluid separately to get into and pressure release passage; The folding of ram preventer; The button of setting upright of the folding of slips and drilling rod is all controlled completion through the control system on the rig floor; Control system 11 is connected with hydraulic system 12, and hydraulic system 12 is connected with controlled assembly respectively again, and the top is driven connected system 1 and is suspended on the top through suspension ring and drives the bottom; The top is driven connected system 1 and is helped the top to drive to set up fast between staple joint and thribble or break off and being connected, has solved when box is connected in original staple joint and the connector can't accurately align and the problem than length consuming time; The top is driven connected system 1 and mainly is made up of hydraulic tongs and two-sided elevator, and drilling fluid separate system 9 one ends are connected on the borehole pump, and an end is connected with connector system 10 and standpipe respectively.
The utility model when work, on carry drilling tool to correct position, i.e. the female joint of drill bit box cupling is positioned at the bottom of blind rams preventer 7; With the steady drill string body of connector slips 5 cards, close first envelope ram preventer 6, second envelope ram preventer 8, close the relief valve of cavity; Open the entering valve of cavity, high pressure drilling liquid gets into cavity, and whole box cupling also is under the high pressure drilling pendular ring border; Behind the box cupling internal and external pressure balance, open the box cupling body, close the passage that drilling fluid gets into from drill string top; On move the male joint after opening, close blind rams preventer 7, close the entering valve of connector epicoele 3; Let drilling fluid pass through 4 circulations of connector cavity of resorption, open first envelope ram preventer 6 after 3 pressure releases of connector epicoele and propose to connect pipe nipple and connect the drill string thribble that preparation is lowered to, align spin-up chain 2 through connector and send into connector epicoele 3; Close first envelope ram preventer 6, open blind rams preventer 7, open the entering valve on drilling rod top simultaneously; Let drilling fluid in drilling rod, get into, after the pressure balance, in closed chamber, carry out the tool joint screwed connection; Open the connector cavity relief valve after the connection, open first envelope ram preventer 6, second envelope ram preventer 8 then, normally creep into.
Be with being appreciated that; More than about the specific descriptions of the utility model; Only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model, to reach identical technique effect; As long as satisfy the use needs, all within the protection domain of the utility model.

Claims (1)

1. a continuous circulating drilling device comprises pushing up and drives connected system (1), drilling fluid separate system (9), connector system (10), control system (11) and hydraulic system (12); It is characterized in that: connector system (10) mainly aligns spin-up chain (2), first envelope ram preventer (6), blind rams preventer (7), second envelope ram preventer (8) and connector slips (5) by connector from top to bottom and forms; Control system (11) is connected with hydraulic system (12); Hydraulic system (12) is connected with controlled assembly respectively again; The top is driven connected system (1) and is suspended on the top through suspension ring and drives the bottom; The top is driven connected system (1) and mainly is made up of hydraulic tongs and two-sided elevator, and drilling fluid separate system (9) one ends are connected on the borehole pump, and an end is connected with connector system (10) and standpipe respectively.
CN 201120358339 2011-08-28 2011-08-28 Continuous circulation drilling device Expired - Fee Related CN202266210U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120358339 CN202266210U (en) 2011-08-28 2011-08-28 Continuous circulation drilling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120358339 CN202266210U (en) 2011-08-28 2011-08-28 Continuous circulation drilling device

Publications (1)

Publication Number Publication Date
CN202266210U true CN202266210U (en) 2012-06-06

Family

ID=46157008

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201120358339 Expired - Fee Related CN202266210U (en) 2011-08-28 2011-08-28 Continuous circulation drilling device

Country Status (1)

Country Link
CN (1) CN202266210U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104278959A (en) * 2013-07-05 2015-01-14 中国石油天然气集团公司 Method for top drive torque superposition and continuous circulating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104278959A (en) * 2013-07-05 2015-01-14 中国石油天然气集团公司 Method for top drive torque superposition and continuous circulating device

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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: 20120606

Termination date: 20140828

EXPY Termination of patent right or utility model