CN201016288Y - Well mouth hydraulic self-sealing equipment - Google Patents

Well mouth hydraulic self-sealing equipment Download PDF

Info

Publication number
CN201016288Y
CN201016288Y CNU2006200313806U CN200620031380U CN201016288Y CN 201016288 Y CN201016288 Y CN 201016288Y CN U2006200313806 U CNU2006200313806 U CN U2006200313806U CN 200620031380 U CN200620031380 U CN 200620031380U CN 201016288 Y CN201016288 Y CN 201016288Y
Authority
CN
China
Prior art keywords
oil cylinder
piston
oil
auxiliary follow
cylinder jacket
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
CNU2006200313806U
Other languages
Chinese (zh)
Inventor
钟仲良
刘英范
向细金
李金洪
吕西绍
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.)
ZIGONG CHUANSHI DRILLING TECHNOLOGY CO LTD
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CNU2006200313806U priority Critical patent/CN201016288Y/en
Application granted granted Critical
Publication of CN201016288Y publication Critical patent/CN201016288Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The utility model relates to a hydraulic self-sealing device for wellhead. The utility model comprises a pressure bearing plate, an oil cylinder jacket, an upper piston follower, a lower piston follower, a rubber core, a locking pressure plate, a locking screw, a reset spring and a joint flange. The pressure bearing plate is pi-shaped. The oil cylinder jacket is a reversed pi-shaped and is connected to the joint flange to form an assembly, an oil inlet and a drain valve are positioned on the oil cylinder jacket, and the oil cylinder jacket and the pressure bearing plate are connected by thread. The rubber core is a hollow I-shaped and is fixed between the upper and lower piston follower by the locking pressure plate with the locking screw, and the reset spring is positioned between the upper and lower piston follower. When force is exerted to the oil cylinder jacket of the utility model, the inner diameter of the rubber core can change according to the outer diameter of the oil pipe and the sucker rod going through the central hole of the rubber core, so that the dynamic sealing of the lower oil pipe and the sucker rod is achieved. When the well does not have the oil pipe or the sucker rod, exertion of appropriate pressure can achieve full sealing or blind sealing of the wellhead.

Description

Well head hydraulic pressure self-sealing device
Technical field: the utility model relates to a kind of well head hydraulic pressure self-sealing device, belongs to oil well repairing operation and removes blowout prevention of well head annular space or overflow mechanism technical field in oil pipe or the sucker rod process.
Background technology: oil well repairing operation removes in oil pipe or the sucker rod process, what blowout prevention of well head annular space or overflow mechanism were used partly seals blowout preventer and seals blowout preventer entirely, structurally be respectively two single discs and single disc, type of drive is manually, can only realize static sealing to removing oil pipe, can not realize that promptly oil pipe removes the dynamic seal (packing) in the process, can not be used for the sealing of lower sucker rod, range of application is little, and poor sealing performance pollutes the oil well surrounding enviroment.
Summary of the invention: the purpose of this utility model is little in order to overcome blowout preventer range of application of the prior art, the defective of poor sealing performance, design a kind of dynamic seal (packing) that can realize removing well head in oil pipe or the sucker rod process, the well head hydraulic pressure self-sealing device of control blowout or overflow.
The utility model is made up of bearing disc, oil cylinder cover, last auxiliary follow up piston, following auxiliary follow up piston, glue core, locking pressure plate, lock-screw, back-moving spring, adpting flange, bearing disc is " П " font, the oil cylinder cover is for falling " П " font, the oil cylinder cover is designed to one with adpting flange, have oil-in and exhaust-valve on it, oil cylinder cover and bearing disc are by screwed connection; The glue core is hollow " worker " font, the glue core is fixed between auxiliary follow up piston and the following auxiliary follow up piston by locking pressure plate with lock-screw, between last auxiliary follow up piston and following auxiliary follow up piston back-moving spring is installed; Be respectively equipped with the connecting thread hole on bearing disc and the adpting flange, can be connected with wellhead flange or other well control device.
The invention effect: when injection pressure in oil cylinder cover of the present utility model, glue in-core footpath can be realized removing the dynamic seal (packing) of oil pipe or sucker rod with changing by the oil pipe of its hollow hole or the external diameter of sucker rod; When in the well when no oil pipe or sucker rod, inject suitable pressure, can realize hermetically sealed or blind sealing to well head, annular pressure is high more, and glue core seal degree is good more.
Description of drawings: Fig. 1 is the utility model structural representation.
The specific embodiment: the utility model is made up of bearing disc 1, oil cylinder cover 5, last auxiliary follow up piston 3, following auxiliary follow up piston 4, glue core 8, locking pressure plate 6, lock-screw 9, back-moving spring 7, adpting flange 2, bearing disc 1 is " П " font, oil cylinder cover 5 is for falling " П " font, oil cylinder cover 5 is designed to one with adpting flange 2, have oil-in 10 and exhaust-valve 11 on it, oil cylinder cover 5 and bearing disc 1 are by screwed connection; Glue core 8 is hollow " worker " font, glue core 8 is fixed between auxiliary follow up piston 3 and the following auxiliary follow up piston 4 by locking pressure plate 6 with lock-screw 9, at last auxiliary follow up piston 3 and 4 of following auxiliary follow up pistons back-moving spring 7 is installed; Be respectively equipped with connecting thread hole 12 and 13 on bearing disc 1 and the adpting flange 2, can be connected with wellhead flange or other well control device.
By oil-in 10 on the oil cylinder cover 1 to oil cylinder cover 1, go up auxiliary follow up piston 3, hydraulic oil injects in the annular sealed chamber that constitutes of auxiliary follow up piston 4, glue core 8 down, air in it discharges by outlet valve 11, when pressure raises, will force auxiliary follow up piston 3 and following auxiliary follow up piston 4 to produce moves axially, glue core 8 internal diameter directions produce radial contraction and encase oil pipe or sucker rod, reach the purpose of sealing annular space, pack tightly the size that degree or seal degree depend on injection pressure; When injection pressure was suitable, glue core 8 internal diameters can change by the external diameter of oil pipe in it or sucker rod; When in the well when no oil pipe or sucker rod, inject certain pressure, glue core 8 internal diameters may contract to zero, and well head is realized hermetically sealed or blind sealing, in case fall into junk or stop overflow; When injection pressure reduced or discharge, last auxiliary follow up piston 3, following auxiliary follow up piston 4 and glue core 8 returned to the home position state under the effect of back-moving spring 7.

Claims (1)

1. well head hydraulic pressure self-sealing device, form by bearing disc (1), oil cylinder cover (5), last auxiliary follow up piston (3), following auxiliary follow up piston (4), glue core (8), locking pressure plate (6), lock-screw (9), back-moving spring (7), adpting flange (2), it is characterized in that bearing disc (1) is " ∏ " font, oil cylinder cover (5) is for falling " ∏ " font, oil cylinder cover (5) is designed to one with adpting flange (2), have oil-in (10) and exhaust-valve (11) on it, oil cylinder cover (5) and bearing disc (1) are by screwed connection; Glue core (8) is hollow " worker " font, glue core (8) is fixed between auxiliary follow up piston (3) and the following auxiliary follow up piston (4) by locking pressure plate (6) with lock-screw (9), between last auxiliary follow up piston (3) and following auxiliary follow up piston (4), back-moving spring (7) is installed; Be respectively equipped with connecting thread hole (12) and (13) on bearing disc (1) and the adpting flange (2), can be connected with wellhead flange or other well control device.
CNU2006200313806U 2006-03-23 2006-03-23 Well mouth hydraulic self-sealing equipment Expired - Fee Related CN201016288Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2006200313806U CN201016288Y (en) 2006-03-23 2006-03-23 Well mouth hydraulic self-sealing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2006200313806U CN201016288Y (en) 2006-03-23 2006-03-23 Well mouth hydraulic self-sealing equipment

Publications (1)

Publication Number Publication Date
CN201016288Y true CN201016288Y (en) 2008-02-06

Family

ID=39056772

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2006200313806U Expired - Fee Related CN201016288Y (en) 2006-03-23 2006-03-23 Well mouth hydraulic self-sealing equipment

Country Status (1)

Country Link
CN (1) CN201016288Y (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102330543A (en) * 2011-05-20 2012-01-25 中国石油化工股份有限公司 Sucker rod ring seal movable sealer
CN103032043A (en) * 2012-11-22 2013-04-10 中国水电顾问集团中南勘测设计研究院 Special hydraulic orifice sealer by orifice sealed grouting method
CN107083936A (en) * 2017-04-25 2017-08-22 中煤科工集团重庆研究院有限公司 Automatic reset hole packer
CN115306342A (en) * 2022-10-11 2022-11-08 克拉玛依红山油田有限责任公司 Glue injection guiding sealing blowout preventer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102330543A (en) * 2011-05-20 2012-01-25 中国石油化工股份有限公司 Sucker rod ring seal movable sealer
CN103032043A (en) * 2012-11-22 2013-04-10 中国水电顾问集团中南勘测设计研究院 Special hydraulic orifice sealer by orifice sealed grouting method
CN107083936A (en) * 2017-04-25 2017-08-22 中煤科工集团重庆研究院有限公司 Automatic reset hole packer
CN115306342A (en) * 2022-10-11 2022-11-08 克拉玛依红山油田有限责任公司 Glue injection guiding sealing blowout preventer

Similar Documents

Publication Publication Date Title
CN202081851U (en) Polish rod sealing apparatus
CN201016288Y (en) Well mouth hydraulic self-sealing equipment
CN112647886B (en) Annular blowout preventer for oil field well mouth
CN102704857A (en) Underground supercharging and accelerating system
CN210217683U (en) Follow-up type rotary annular blowout preventer
CN103527135B (en) Double-cylinder compression packer
CN112503186B (en) Valve for double-sealing petroleum pipeline
CN204002674U (en) A kind of metallic combination sealing shroud tube head
CN207034197U (en) A kind of Flange-type gauge valve group
CN202706929U (en) Pressurization speeding-up system in pit
CN201502719U (en) Pneumatic two-position stop valve
CN202228035U (en) Packing box for oil well
CN203161152U (en) Sucker rod self-sealing preventer
CN201802348U (en) Removable internal oil tube stopper
CN202417413U (en) Expansion packing and loosening preventive negative pressure generator
CN201031647Y (en) Stop production well head packer
CN2677599Y (en) Automatic regulation wellhead sealing device
CN201474669U (en) Plugging tubing string of non-productive well
CN217950314U (en) Floating adjustable well-plugging blowout prevention multifunctional packing box
CN216009754U (en) Double-acting valve rod sealing structure
CN212479152U (en) Dual-function well plugging device
CN2573665Y (en) Water plugging packer
CN211010129U (en) Valve rod sealing mechanism
CN109025904B (en) Inclined cover plate valve for pumping unit monitoring well
CN208900066U (en) A kind of wellhead sealing device

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: ZIGONG CHUANSHI DRILLING TECHNOLOGY CO., LTD.

Free format text: FORMER OWNER: ZHONG ZHONGLIANG

Effective date: 20100621

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 457532 WELL TESTING CENTER, OIL EXTRACTION INSTITUTE, NO.109, ZHONGYUAN ROAD UYANG CITY, HENAN PROVINCE TO: 643000 NO.129, GROUP 1, TIANYUAN VILLAGE, XINMIN TOWN, DAAN DISTRICT, ZIGONG CITY, SICHUAN PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20100621

Address after: Xinmin Town Daan District of Tianyuan city of Zigong province Sichuan 643000 village 1 Group No. 129

Patentee after: Zigong Chuanshi Drilling Technology Co.,Ltd.

Address before: 457532 well testing center, Zhongyuan Oil Road, No. 109 Zhongyuan Road, Henan, Puyang

Patentee before: Zhong Zhongliang

DD01 Delivery of document by public notice

Addressee: Zigong Chuanshi Drilling Technology Co.,Ltd.

Document name: Notification of Termination of Patent Right

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080206

Termination date: 20140323