CN108386152A - The extension hanger and its control method controlled by ground bit pressure - Google Patents

The extension hanger and its control method controlled by ground bit pressure Download PDF

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Publication number
CN108386152A
CN108386152A CN201810218851.1A CN201810218851A CN108386152A CN 108386152 A CN108386152 A CN 108386152A CN 201810218851 A CN201810218851 A CN 201810218851A CN 108386152 A CN108386152 A CN 108386152A
Authority
CN
China
Prior art keywords
extension hanger
extension
housing
motor
pressure
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.)
Pending
Application number
CN201810218851.1A
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Chinese (zh)
Inventor
陈燕
杨清海
王斌
李�权
姜领
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.)
Jiangsu Space Flight Hong Peng Numerical Controlled Machinery Co Ltd
Original Assignee
Jiangsu Space Flight Hong Peng Numerical Controlled Machinery 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 Jiangsu Space Flight Hong Peng Numerical Controlled Machinery Co Ltd filed Critical Jiangsu Space Flight Hong Peng Numerical Controlled Machinery Co Ltd
Priority to CN201810218851.1A priority Critical patent/CN108386152A/en
Publication of CN108386152A publication Critical patent/CN108386152A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/02Surface sealing or packing
    • E21B33/03Well heads; Setting-up thereof
    • E21B33/04Casing heads; Suspending casings or tubings in well heads
    • E21B33/0422Casing heads; Suspending casings or tubings in well heads a suspended tubing or casing being gripped by a slip or an internally serrated member

Abstract

The present invention discloses a kind of extension hanger controlled by ground bit pressure and its control method, control method are:A, extension hanger upper end is connect with drilling rod, extension hanger lower end is connect with tail pipe;B, in place by tail pipe decentralization, under tail pipe behind end in contact shaft bottom, extension hanger seat extension is carried out, operation drilling rod carries out the put-on and delegated operation of certain rule;A pressure threshold is set in advance, the pressure that extension hanger is subject to is more than threshold value, is set as " 1 ", and the pressure that extension hanger is subject to is less than threshold value, is set as " 0 ";C, extension hanger carries out seat extension operation after receiving control instruction.Battery, motor, foil gauge and electric circuit in well plate are provided in extension hanger, when needing to carry out extension hanger seat extension, operating personnel realize the action of extension hanger seat extension by raising and decentralizing drilling rod.

Description

The extension hanger and its control method controlled by ground bit pressure
Technical field
The present invention relates to oilfield drilling technical field, specifically a kind of extension hanger controlled by ground bit pressure and Its control method.
Background technology
When carrying out oil drilling, during drilling liner cementing, extension hanger is needed to hang over upper layer casing by slip spider On, the tail pipe of support lower part connection.It is by building the pressure in well head, utilizing pipe that the general extension hanger used at present, which sits extension mode, Inside and outside head of liquid difference pushes slips to move upwards, and seat is hung on the casing of upper layer.Maximum is asked existing for this seat hanging method Topic is exactly that extension hanger inner wall needs that pressure transmission hole is arranged, and pressure transmission hole is connected to liquid in pipe, and intraluminal fluid column pressure passes through pressure transmission Hole is applied on slips, once pressure transmission hole during going into the well due to blocking the impurity of underground more, intraluminal fluid column pressure can be caused It can not be applied on slips by pressure transmission hole, leading to occur extension hanger can not seat the problem of hanging;On the other hand, if tail pipe Hanger encounters overpressure during going into the well and increases situation extremely, extension hanger can be caused to shift to an earlier date seat extension, bringing need not The down hole problem wanted.
Invention content
Goal of the invention:The purpose of the present invention is for the deficiency in current technology, provide one kind and controlled by ground bit pressure Extension hanger and its control method, by down-hole pressure variation influenced, can effectively avoid a variety of when prior art operation The interference of underground complicated factor.
Technical solution:To achieve the above object, the present invention provide a kind of extension hanger controlled by ground bit pressure and Its control method, control method are as follows:
A, extension hanger upper end is connect with drilling rod, extension hanger lower end is connect with tail pipe;
B, in place by tail pipe decentralization, under tail pipe behind end in contact shaft bottom, extension hanger seat extension is carried out, operation drilling rod carries out a set pattern The put-on and delegated of rule operates;A pressure threshold is set in advance, the pressure that extension hanger is subject to is more than threshold value, is set as " 1 ", The pressure that extension hanger is subject to is less than threshold value, is set as " 0 ";
C, extension hanger carries out seat extension operation after receiving control instruction;
The extension hanger includes promoting short circuit, packoff nipple, slips, motor housing body, foil gauge, electric circuit in well plate, electricity Machine rotor, motor inner housing, down-hole battery, coupling sleeve, lower contact and top connection, rotor passes through with motor housing body to be coupled Set connection;Coupling sleeve is connect with motor housing body by threaded screw rod mode;Motor inner housing lower end connects lower contact;In motor Confined space is constituted by sealing ring between shell and motor housing body, down-hole battery, electric circuit in well plate and foil gauge are installed on Wherein;Motor housing body upper end is connected with slips, and top connection is connect with motor inner housing, and it is short that sealing is connected in the top connection Section, the packoff nipple upper end are connected with promotion short circuit, and the promotion short circuit is connect with packoff nipple by reverse thread;It is described Promote short circuit, packoff nipple, top connection and motor inner housing are tubular structure, Inner Constitution uniform smooth is logical after a combination thereof Road.
As a kind of improvement of this programme, rotor is connected through a screw thread with coupling sleeve, motor inner housing and lower contact It is connected through a screw thread, packoff nipple is connected through a screw thread with top connection.
As a kind of improvement of this programme, outer wall seamlessly transits after packoff nipple is connect with top connection, and outside packoff nipple Wall diameter is remained unchanged by with top connection contact portion after cumulative one section.
As a kind of improvement of this programme, packoff nipple upper end internal orifice is horn mouth.
As a kind of improvement of this programme, the outer wall bracket of top connection is less than diameter in motor housing body, and motor housing body moves up When coupling can be coated.
Advantageous effect:The extension hanger disclosed in this invention controlled by ground bit pressure and its control method, tail pipe Battery, motor, foil gauge and electric circuit in well plate are provided in hanger, when needing to carry out extension hanger seat extension, operator Member on ground, hang by the automatic seat of the remote control underground extension hanger by way of regularly raising and decentralizing drilling rod.
During practice of construction, when needing to carry out the extension operation of extension hanger seat, operating personnel operate on derrick Drilling rod progress certain rule raises and decentralizes action.Since tail pipe has been sent to underground precalculated position at this time, transferred on ground Drilling rod can compress entire downhole pipeline, carry drilling rod on the ground, can reduce the decrement of entire downhole pipeline, or even make entire Downhole pipeline is in tensional state;Therefore, in ground lowering drill pipes, extension hanger can be by larger pressure, on the ground Drilling rod is carried, extension hanger can be by smaller pressure even pulling force;Be set in advance a pressure threshold, extension hanger by The pressure arrived is more than threshold value, is set as " 1 ", and the pressure that extension hanger is subject to is less than threshold value, " 0 " is set as, in this way, on derrick The put-on and delegated operation that drilling rod carries out certain rule is operated, thus can transmit one group of regular binary code control to underground Signal processed.Foil gauge built in extension hanger receives this underground pressure variation, and gives underground received signal Circuit board carries out signal processing and identification, extracts control signal therein, if built in the signal and electric circuit in well plate of identification Instruction mismatch, extension hanger is failure to actuate;If the signal of identification and the instructions match built in electric circuit in well plate, tail pipe are outstanding Hanging device starts to act;Down-hole battery is powered to electric circuit in well plate, foil gauge and underground direct current motor.Rotor rotates, and drives Coupling sleeve rotates, and under the cooperation of threaded screw rod, pushing motor outer housing moves upwards coupling sleeve, and motor housing body pushes slips Inclined-plane on packoff nipple moves upwards, and realizes that extension hanger seat is hung.
Outer wall seamlessly transits after packoff nipple is connect with top connection, ensures that slips uplink is smooth, is not in clamping stagnation.
Packoff nipple upper end internal orifice is horn mouth, facilitates the installation for promoting short circuit.
The extension hanger disclosed in this invention controlled by ground bit pressure and its control method, can realize on ground Extension hanger automatic seat in remote control underground is hung, and the method meets remote control simultaneously, easy to operate, seat extension is reliably wanted It asks, and is not influenced by down-hole pressure variation, can effectively avoid the interference of a variety of underground complicated factors when traditional technology operation.
Description of the drawings
Fig. 1, extension hanger structural schematic diagram;
Fig. 2, extension hanger slips attachment structure schematic diagram;
Fig. 3, extension hanger downhole pipeline structural schematic diagram;
Fig. 4, extension hanger control principle drawing;
Structural schematic diagram after Fig. 5, extension hanger seat are hung;
Reference numerals list:1, short circuit is promoted;2, packoff nipple;3, slips;4, motor housing body;5, foil gauge;6, underground electricity Road plate;7, rotor;8, upper sealing ring;9, motor inner housing;10, down-hole battery;11, coupling sleeve;12, lower seal;13、 Lower contact;14, top connection;15, drilling rod;16, tail pipe;17, derrick;18, well head;19, extension hanger.
Specific implementation mode
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific implementation modes are only For illustrating the present invention rather than limiting the scope of the invention.It should be noted that word " preceding " used in the following description, " rear ", "left", "right", "up" and "down" refer to that the direction in attached drawing, word "inner" and "outside" refer respectively to direction or remote Direction from geometric center of specific component.
It is a kind of 16 hanger of tail pipe by the rotation control of ground drilling rod 15 as shown in Figure 1, including promotes short circuit 1, close Seal pipe nipple 2, slips 3, motor housing body 4, foil gauge 5, electric circuit in well plate 6, rotor 7, motor inner housing 9, down-hole battery 10, coupling sleeve 11, lower contact 13 and top connection 14, rotor 7 are coupled with motor housing body 4 by coupling sleeve 11, and motor turns Son 7 is connected through a screw thread with coupling sleeve 11;Coupling sleeve 11 is connect with motor housing body 4 by threaded screw rod mode;Motor inner casing Body 9 is connected through a screw thread with lower contact 13;Motor inner housing 9 and 4 both ends of motor housing body respectively by upper sealing ring 8 and under it is close Seal 12 is sealed composition confined space, and down-hole battery 10, electric circuit in well plate 6 and foil gauge 5 are installed on wherein;Motor housing 4 upper end of body is connected with slips 3, as shown in Fig. 2, slips 3 is connect by mechanical engagement with motor housing body 4;Top connection 14 and electricity Machine inner housing 9 connects, and packoff nipple 2 is connected in top connection 14, and packoff nipple 2 is connected through a screw thread with top connection 14, is promoted Short circuit 1 is connect with packoff nipple 2 by reverse thread;The promotion short circuit 1, packoff nipple 2, top connection 14 and motor inner housing 9 be tubular structure, the channel of Inner Constitution uniform smooth after a combination thereof.Outer wall is flat after packoff nipple 2 is connect with top connection 14 It slips over and crosses, and 2 outer diameter of packoff nipple is remained unchanged by with 14 contact portion of top connection after cumulative one section.Packoff nipple 2 upper end internal orifices are horn mouth.14 outer wall bracket of top connection is less than 4 internal diameter of motor housing body, can will be outer when motor housing body 4 moves up Connector coats.
When carrying out actual job, downhole pipeline structure is as shown in figure 3, promote 1 upper end jointed rod 15 of short circuit, lower contact 13 Union tail 16.
The control method for carrying out 19 extensions of extension hanger is as follows:
A, 19 upper end of extension hanger is connect with drilling rod 15,19 lower end of extension hanger is connect with tail pipe 16;
B, in place by the decentralization of tail pipe 16, behind 16 times end in contact shaft bottoms of tail pipe, extension hanger seat extension is carried out, operation drilling rod 15 carries out The put-on and delegated of certain rule operates;A pressure threshold is set in advance, the pressure that extension hanger 19 is subject to is more than threshold value, It is set as " 1 ", the pressure that extension hanger 19 is subject to is less than threshold value, is set as " 0 ";
C, extension hanger 19 carries out seat extension operation after receiving control instruction;
Control method schematic diagram in step b, works as needs as shown in figure 4, electric circuit in well plate 6 is built-in with a string of binary instructions When carrying out extension hanger 19 and hanging operation, operating personnel operate on derrick 17 the progress certain rule of drilling rod 15 above carry and under Put action.Since tail pipe 16 has been sent to underground precalculated position at this time, the lowering drill pipes 15 on ground can compress entire downhole tubular String, carries drilling rod 15, can reduce the decrement of entire downhole pipeline on the ground, or even so that entire downhole pipeline is in and stretch shape State;Therefore, in ground lowering drill pipes 15, extension hanger 19 can be carried drilling rod 15 on the ground by larger pressure, and tail pipe is outstanding Hanging device 19 can be by smaller pressure even pulling force;A pressure threshold, the pressure that extension hanger 19 is subject to is set in advance It more than threshold value, is set as " 1 ", the pressure that extension hanger 19 is subject to is less than threshold value, " 0 " is set as, in this way, being operated on derrick 17 Drilling rod 15 carries out the put-on and delegated operation of certain rule, and one group of regular binary code control can be thus transmitted to underground Signal.Foil gauge 5 built in 16 hanger of tail pipe receives this underground pressure variation, and gives underground received signal Circuit board 6 carries out signal processing and identification, extracts control signal therein, if in the signal and electric circuit in well plate 6 of identification The instruction set mismatches, and extension hanger 19 is failure to actuate;If the signal of identification and the instructions match built in electric circuit in well plate 6, Extension hanger 19 starts to act;Down-hole battery 10 is powered to electric circuit in well plate 6, foil gauge 5 and underground direct current motor.Motor turns Son 7 rotates, and coupling sleeve 11 is driven to rotate, and under the cooperation of threaded screw rod, pushing motor outer housing 4 moves upwards coupling sleeve 11, Motor housing body 4 pushes inclined-plane of the slips 3 on packoff nipple 2 to move upwards, and realizes that extension hanger seat is hung, extension hanger State is as shown in Figure 5 after 19 extensions.
The technical means disclosed in the embodiments of the present invention is not limited only to the technological means disclosed in the above embodiment, further includes By the above technical characteristic arbitrarily the formed technical solution of combination.

Claims (5)

1. a kind of extension hanger controlled by ground bit pressure and its control method, which is characterized in that control method is as follows:
A, by extension hanger(19)Upper end is connect with drilling rod (15), extension hanger(19)Lower end is connect with tail pipe (16);
B, by tail pipe(16)It transfers in place, tail pipe(16)Behind lower end in contact shaft bottom, extension hanger seat extension is carried out, operates drilling rod (15) the put-on and delegated operation of certain rule is carried out;A pressure threshold, extension hanger is set in advance(19)The pressure being subject to More than threshold value, it is set as " 1 ", extension hanger(19)The pressure being subject to is less than threshold value, is set as " 0 ";
C, extension hanger carries out seat extension operation after receiving control instruction;
The extension hanger includes promoting short circuit (1), packoff nipple (2), slips (3), motor housing body (4), foil gauge (5), electric circuit in well plate (6), rotor (7), motor inner housing (9), down-hole battery (10), coupling sleeve (11), lower contact (13) coupled by coupling sleeve (11) with motor housing body (4) with top connection (14), rotor (7);Coupling sleeve (11) and electricity Machine outer housing (4) is connected by threaded screw rod mode;Motor inner housing (9) lower end connects lower contact (13);Motor inner housing (9) Confined space, down-hole battery (10), electric circuit in well plate (6) and foil gauge are constituted by sealing ring between motor housing body (4) (5) it is installed on wherein;Motor housing body (4) upper end is connected with slips (3), and top connection (14) is connect with motor inner housing (9), institute It states and is connected with packoff nipple (2) in top connection (14), packoff nipple (2) upper end, which is connected with, promotes short circuit (1), the promotion Short circuit (1) is connect with packoff nipple (2) by reverse thread;The promotion short circuit (1), packoff nipple (2), top connection (14) and Motor inner housing (9) is tubular structure, the channel of Inner Constitution uniform smooth after a combination thereof.
2. a kind of extension hanger controlled by ground bit pressure as described in claim 1 and its control method, feature exist In:The rotor (7) is connected through a screw thread with coupling sleeve (11), and the motor inner housing (9) passes through with lower contact (13) It is threadedly coupled, the packoff nipple (2) is connected through a screw thread with top connection (14).
3. a kind of extension hanger controlled by ground bit pressure as claimed in claim 2 and its control method, feature exist In:Outer wall seamlessly transits after the packoff nipple (2) connect with top connection (14), and packoff nipple (2) outer diameter by with it is upper Connector (14) contact portion remains unchanged after starting cumulative one section.
4. a kind of extension hanger controlled by ground bit pressure as claimed in claim 3 and its control method, feature exist In:Packoff nipple (2) upper end internal orifice is horn mouth.
5. a kind of extension hanger controlled by ground bit pressure as claimed in claim 4 and its control method, feature exist In:The outer wall bracket of the top connection (14) is less than motor housing body (4) internal diameter, can be by coupling when motor housing body (4) moves up Cladding.
CN201810218851.1A 2018-03-16 2018-03-16 The extension hanger and its control method controlled by ground bit pressure Pending CN108386152A (en)

Priority Applications (1)

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CN201810218851.1A CN108386152A (en) 2018-03-16 2018-03-16 The extension hanger and its control method controlled by ground bit pressure

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Application Number Priority Date Filing Date Title
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6267185B1 (en) * 1999-08-03 2001-07-31 Schlumberger Technology Corporation Apparatus and method for communication with downhole equipment using drill string rotation and gyroscopic sensors
CN2453119Y (en) * 2000-08-24 2001-10-10 胜利石油管理局渤海钻井总公司 Oil well tail pipe holding means of mechanical slips locus type
CN101876243A (en) * 2009-04-30 2010-11-03 浙江关西电机有限公司 Control system of pumping system
CN102808589A (en) * 2012-08-16 2012-12-05 中国石油大学(北京) Motor-driven underground tractor for coiled tubing
CN105927179A (en) * 2016-05-06 2016-09-07 西南石油大学 Pressing expansion type downhole annular blowout preventer and communication method thereof
CN107227948A (en) * 2017-05-19 2017-10-03 中国石油集团川庆钻探工程有限公司 The method that ground controls downhole orientation hydrajet tool

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6267185B1 (en) * 1999-08-03 2001-07-31 Schlumberger Technology Corporation Apparatus and method for communication with downhole equipment using drill string rotation and gyroscopic sensors
CN2453119Y (en) * 2000-08-24 2001-10-10 胜利石油管理局渤海钻井总公司 Oil well tail pipe holding means of mechanical slips locus type
CN101876243A (en) * 2009-04-30 2010-11-03 浙江关西电机有限公司 Control system of pumping system
CN102808589A (en) * 2012-08-16 2012-12-05 中国石油大学(北京) Motor-driven underground tractor for coiled tubing
CN105927179A (en) * 2016-05-06 2016-09-07 西南石油大学 Pressing expansion type downhole annular blowout preventer and communication method thereof
CN107227948A (en) * 2017-05-19 2017-10-03 中国石油集团川庆钻探工程有限公司 The method that ground controls downhole orientation hydrajet tool

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Application publication date: 20180810