CN201705264U - Electric pump well tubing head and sealing device - Google Patents

Electric pump well tubing head and sealing device Download PDF

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Publication number
CN201705264U
CN201705264U CN2010201215760U CN201020121576U CN201705264U CN 201705264 U CN201705264 U CN 201705264U CN 2010201215760 U CN2010201215760 U CN 2010201215760U CN 201020121576 U CN201020121576 U CN 201020121576U CN 201705264 U CN201705264 U CN 201705264U
Authority
CN
China
Prior art keywords
cable
hole
tubing head
sealing
flange
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 - Lifetime
Application number
CN2010201215760U
Other languages
Chinese (zh)
Inventor
单全生
任今明
王海坤
沈建新
张媛
熊大贵
钟家维
徐丰岭
卢宇
赵顶
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.)
Petrochina Co Ltd
China Petroleum and Natural Gas Co Ltd
Original Assignee
China Petroleum and Natural Gas 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 China Petroleum and Natural Gas Co Ltd filed Critical China Petroleum and Natural Gas Co Ltd
Priority to CN2010201215760U priority Critical patent/CN201705264U/en
Application granted granted Critical
Publication of CN201705264U publication Critical patent/CN201705264U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to an electric pump well tubing head and a sealing device, which are applied to electric submersible pump oil extraction well fields. A middle flange base of a common tubing head is provided with a stepped cable passing hole which is internally provided with a main fixing seal, the outer end of the flange base is fixed with a crossover flange by a bolt, one end of the crossover flange is arranged in the cable passing hole and tightly presses the main seal; the center hole of the crossover flange is stepped and is internally provided with an auxiliary fixing seal; one end of a gland is arranged in the center hole of the crossover flange and tightly presses the auxiliary seal; and an electric pump cable passes through the center hole of the gland as well as the auxiliary seal and the main seal, and enters the common tubing head through the cable passing hole of the common tubing head. The electric pump well tubing head and the sealing device have the effects that the electric pump cable does not passes through a tubing hanger after penetrating out of the cable passing hole, the construction is simple and safe, the risk is low, and the seal is reliable.

Description

Electric pump well tubing head and sealing device
Technical field
The utility model relates to the oil field technical field of oil production engineering, and particularly a kind of employing electric submersible pumping well head is a kind of electric pump well tubing head and sealing device.
Background technology
Some Oilfield using electric submersible pump is implemented to recover the oil.Electric submersible pump is installed in the down-hole, and the sidewall cable by the well head tubing head passes through the hole cable is penetrated in the tubing head, and is connected with the down-hole electric submersible pump, for electric submersible pump provides electric energy.When wearing cable, traditional tubing head to do two seals, and the one, cable passes the sealing of tubing hanger, and the 2nd, cable passes the sealing of tubing head upper flange.The subject matter that exists is that operational sequence is many, and the time is long, and workman's fatiguability influences the cable quality of connection, and operation has the well head cable breakdown to cause oil producing operation affair method to be carried out often.
Patent " submersible electric pump access ramp flange form well head cable insulation sealing device ", adopt access ramp, consider pressure-bearing and limited location, channel size (requiring more than or equal to 103.2 millimeters) is restricted, passage is little, and then will to make cable pass through the access ramp difficulty bigger, not easy to operate.Because electric pump well generally will set on one side at tubing head and press air valve, another side will be surveyed the electric pump well liquid level, so only one production casing valve do not satisfy the production needs.
The utility model content
The purpose of this utility model is: a kind of electric pump well tubing head and sealing device are provided, by reducing the well head sealing, reach the minimizing well head and wear the time of cable, and a complete set of sealing and pressure testing condition is provided, make well head that simple more, safety, the generation that reduces or stop well head cable breakdown situation are installed.
The technical solution adopted in the utility model is: electric pump well tubing head and sealing device, mainly form by conventional tubing head, crossover flange, primary seal, bolt, secondary sealing and gland, in the both sides of conventional tubing head a sleeve gate is arranged respectively, it is characterized in that: a tubular flange seat is arranged in conventional tubing head intermediate lateral, there is a cable to pass through the hole at the flange seat center, the center line that cable passes through the hole is vertical with the sleeve gate center line of conventional tubing head, and cable passes through centerline hole and sleeve gate center line on same horizontal plane.
It is stairstepping that cable passes through the hole, and promptly cable passes through the fixedly step of primary seal in the hole; Cylindrical primary seal in passing through the hole, cable is arranged; In conventional tubing-head adapter flange seat outer face bolt hole is arranged.In the flange seat outer end and by bolt crossover flange is arranged.Crossover flange is the cylinder bodily form, and an end of crossover flange is in cable passes through the hole and compress primary seal.
Crossover flange has centre bore, and the crossover flange centre bore is stepped, and the step of fixed joint sealing is promptly arranged in the centre bore; Cylindrical secondary sealing is arranged in the crossover flange centre bore; In the crossover flange other end bolt hole is arranged.Be fixed with gland in the crossover flange outer end and by gland bolt.Gland has centre bore, and an end of gland is in the crossover flange centre bore and compress secondary sealing.
The electric pump cable passes the gland centre bore, and passes secondary sealing and primary seal, and the cable by conventional tubing head passes through the hole and enters in the conventional tubing head.Strain relief clamp is fixed on the electric pump cable on the outer wall of oil pipe.The electric pump cable arrives the down-hole always and is connected with electric submersible pump.
Convenient for pressure testing, the pressure testing hole is arranged on crossover flange, the pressure testing hole between primary seal and secondary sealing, after whole installations, can be by the pressure testing of pressure testing hole.
For chamfer damage electric pump cable in preventing, the inner that conventional tubing head cable passes through the hole is the circular arc chamfering.
Primary seal and secondary sealing are made up of seal receptacle and seal gasket respectively, and seal receptacle is a disc, and there is cable aperture the centre, and the electric pump cable can pass; Seal gasket is a disc, and there is cable aperture the centre, and the electric pump cable can pass, and after compressing seal gasket, seal gasket distortion and sealing electric pump cable.
The beneficial effects of the utility model: the utility model electric pump well tubing head and sealing device, after the electric pump cable passes through the hole and passes from cable, the operative employee of operation team just can the seat tubing hanger, and electric pump operation worker makees sealing device, promptly do primary seal, connect crossover flange, do secondary sealing, connect gland, and pressure testing, after pressure testing is qualified, just finishes electric pump and do the well head operation.Cable does not pass through tubing hanger, and construction is simple, safety, risk is little, sealing is reliable.
Description of drawings
Fig. 1 is the utility model electric pump well tubing head and sealing device structure generalized section.
Among the figure, 1. conventional tubing head, 2. crossover flange, 3. tubing hanger, 4. oil pipe, 5. cable passes through the hole, 6. pressure testing hole, 7. primary seal, 8. bolt, 9. secondary sealing, 10. gland, 11. gland bolts, 12. strain relief clamps, 13. electric pump cables.
The specific embodiment
Embodiment 1: with an electric pump well tubing head and sealing device is example, and the utility model is described in further detail.
In the both sides of conventional tubing head 1 sleeve gate is arranged respectively.A Feng Youyi tubing hanger 3 is hung with oil pipe 4 on the center screw of tubing hanger 3 in conventional tubing head 1.The lower end of oil pipe 4 is fixed with an electric submersible pump.
Consult Fig. 1.The utility model electric pump well tubing head and sealing device, mainly form by conventional tubing head 1, crossover flange 2, primary seal 7, bolt 8, secondary sealing 9 and gland 10, in the middle of conventional tubing head 1, a tubular flange seat is laterally arranged, be drilled with a cable at the flange seat center and pass through hole 5, the center line that cable passes through hole 5 is vertical with the sleeve gate center line of conventional tubing head 1, and cable passes through hole 5 center lines and sleeve gate center line on same horizontal plane.The diameter that cable passes through hole 10 is identical with the interior latus rectum of conventional tubing head 1 both sides sleeve gate.The inner that conventional tubing head 1 cable passes through hole 5 is the circular arc chamfering.
Cable passes through hole 5 and is stairstepping, and inner minor diameter is 70 millimeters, and outside major diameter is defended 80 millimeters.Be that cable passes through the fixedly step of primary seal 7 is arranged in the hole 5; It is 80 millimeters cylindrical primary seal 7 that external diameter is arranged in cable passes through hole 5; In conventional tubing head 1 flange seat outer face 12 bolts hole are arranged.Be fixed with crossover flange 2 in the flange seat outer end and by 12 bolts 8.Crossover flange 2 is the cylinder bodily form, and an end of crossover flange 2 is in cable passes through hole 5 and compress primary seal 7.
Crossover flange 2 has centre bore, and crossover flange 2 centre bores are stepped, and inner minor diameter is 50 millimeters, and outside major diameter is defended 60 millimeters.It is the step that fixed joint sealing 9 is arranged in the centre bore; It is 60 millimeters cylindrical secondary sealing 9 that external diameter is arranged in crossover flange 2 centre bores; In crossover flange 2 other ends 6 bolts hole are arranged.Be fixed with gland 10 in crossover flange 2 outer ends and by gland bolt 11.Gland 10 has centre bore, and an end of gland 10 is in crossover flange 2 centre bores and compress secondary sealing 9.
Electric pump cable 13 passes gland 10 centre bores, and passes secondary sealing 9 and primary seal 7, and the cable by conventional tubing head 1 passes through hole 5 and enters in the conventional tubing head 1.Strain relief clamp 12 is fixed on electric pump cable 13 on the outer wall of oil pipe 4.Electric pump cable 13 arrives the down-hole always and is connected with electric submersible pump.
A pressure testing hole 6 is arranged on crossover flange 2, and pressure testing hole 6 is between primary seal 7 and secondary sealing 9.
Primary seal 7 and secondary sealing 9 are made up of a seal receptacle and three seal gaskets respectively, and seal receptacle is a disc, and there is cable aperture the centre; Seal gasket is a disc, and there is cable aperture the centre.

Claims (4)

1. electric pump well tubing head and sealing device, mainly by conventional tubing head (1), crossover flange (2), primary seal (7), bolt (8), secondary sealing (9) and gland (10) are formed, in the both sides of conventional tubing head (1) sleeve gate is arranged respectively, it is characterized in that: a tubular flange seat is arranged in conventional tubing head (1) intermediate lateral, there is a cable to pass through hole (5) at the flange seat center, the center line that cable passes through hole (5) is vertical with the sleeve gate center line of conventional tubing head (1), and cable passes through hole (5) center line and sleeve gate center line on same horizontal plane;
Cable passes through hole (5) and is stairstepping, and promptly cable passes through the fixedly step of primary seal (7) is arranged in the hole (5); Cylindrical primary seal (7) in passing through hole (5), cable is arranged; In conventional tubing head (1) flange seat outer face bolt hole is arranged, in the flange seat outer end and be fixed with crossover flange (2) by bolt (8), crossover flange (2) is the cylinder bodily form, and an end of crossover flange (2) is in cable passes through hole (5) and compress primary seal (7);
Crossover flange (2) has centre bore, and crossover flange (2) centre bore is stepped, and the step of fixed joint sealing (9) is promptly arranged in the centre bore; Cylindrical secondary sealing (9) is arranged in crossover flange (2) centre bore; In crossover flange (2) other end bolt hole is arranged, in crossover flange (2) outer end and be fixed with gland (10) by gland bolt (11), gland (10) has centre bore, and an end of gland (10) is crossover flange (2) centre bore in and compress pair and seal (9);
Electric pump cable (13) passes gland (10) centre bore, and pass secondary sealing (9) and primary seal (7), cable by conventional tubing head (1) passes through hole (5) and enters in the conventional tubing head (1), and strain relief clamp (12) is fixed on electric pump cable (13) on the outer wall of oil pipe (4).
2. electric pump well tubing head according to claim 1 and sealing device is characterized in that: pressure testing hole (6) is arranged on crossover flange (2), and pressure testing hole (6) are positioned between primary seal (7) and the secondary sealing (9).
3. electric pump well tubing head according to claim 1 and sealing device is characterized in that: the inner that conventional tubing head (1) cable passes through hole (5) is the circular arc chamfering.
4. according to claim 1,2 or 3 described electric pump well tubing head and sealing devices, it is characterized in that: primary seal (7) and secondary sealing (9) are made up of seal receptacle and seal gasket respectively, and seal receptacle is a disc, and there is cable aperture the centre, and electric pump cable (13) can pass; Seal gasket is a disc, and there is cable aperture the centre.
CN2010201215760U 2010-02-26 2010-02-26 Electric pump well tubing head and sealing device Expired - Lifetime CN201705264U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201215760U CN201705264U (en) 2010-02-26 2010-02-26 Electric pump well tubing head and sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201215760U CN201705264U (en) 2010-02-26 2010-02-26 Electric pump well tubing head and sealing device

Publications (1)

Publication Number Publication Date
CN201705264U true CN201705264U (en) 2011-01-12

Family

ID=43442419

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201215760U Expired - Lifetime CN201705264U (en) 2010-02-26 2010-02-26 Electric pump well tubing head and sealing device

Country Status (1)

Country Link
CN (1) CN201705264U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102268971A (en) * 2011-08-05 2011-12-07 中国石油天然气股份有限公司 Cable-through type thermal recovery wellhead device for electric submersible pump
CN103050912A (en) * 2012-12-07 2013-04-17 重庆昌瑞电器制造有限公司 Wellhead cable penetration device with upper part capable of universally turning
CN105545242A (en) * 2016-01-28 2016-05-04 沈阳工业大学通益科技有限公司 High-temperature wellhead penetrator structure for electric submersible pump
CN106611942A (en) * 2016-05-11 2017-05-03 普斐特油气工程(江苏)有限公司 Electric submersible pump wellhead cable outgoing structure
CN110120650A (en) * 2019-05-27 2019-08-13 中国船舶工业集团公司第七0八研究所 Crossing cabin sealing structure suitable for big line footpath than cable

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102268971A (en) * 2011-08-05 2011-12-07 中国石油天然气股份有限公司 Cable-through type thermal recovery wellhead device for electric submersible pump
CN102268971B (en) * 2011-08-05 2013-07-31 中国石油天然气股份有限公司 Cable-through type thermal recovery wellhead device for electric submersible pump
CN103050912A (en) * 2012-12-07 2013-04-17 重庆昌瑞电器制造有限公司 Wellhead cable penetration device with upper part capable of universally turning
CN103050912B (en) * 2012-12-07 2016-06-08 重庆昌瑞电器制造有限公司 The wellhead cable penetrating device of the top universal turning of energy
CN105545242A (en) * 2016-01-28 2016-05-04 沈阳工业大学通益科技有限公司 High-temperature wellhead penetrator structure for electric submersible pump
CN106611942A (en) * 2016-05-11 2017-05-03 普斐特油气工程(江苏)有限公司 Electric submersible pump wellhead cable outgoing structure
CN110120650A (en) * 2019-05-27 2019-08-13 中国船舶工业集团公司第七0八研究所 Crossing cabin sealing structure suitable for big line footpath than cable

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GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20110112