CN203066924U - Combination-sealed direction-dividing wear-resisting fracture mining well head equipment - Google Patents
Combination-sealed direction-dividing wear-resisting fracture mining well head equipment Download PDFInfo
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- CN203066924U CN203066924U CN 201220756695 CN201220756695U CN203066924U CN 203066924 U CN203066924 U CN 203066924U CN 201220756695 CN201220756695 CN 201220756695 CN 201220756695 U CN201220756695 U CN 201220756695U CN 203066924 U CN203066924 U CN 203066924U
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Abstract
Combination-sealed direction-dividing wear-resisting fracture mining well head equipment is composed of a sleeve tube connecting piece, an oil pipe head, a christmas tree, a flat-board valve, a connecting flange, a sealing piece and a connecting piece. The combination-sealed direction-dividing wear-resisting fracture mining well head equipment is characterized in that a tubing spool is arranged inside the oil pipe head, the upper end and the lower end of the tubing spool are provided with flanges, diamond protrusions are formed on the left side and the right side of the tubing spool, bypass channels at the left side and the right side are inclined downward and are intersected with main channels arranged at the upper portion and the lower portion in an acute-angle mode. A combination seal structure is arranged on the upper end of a hanger component and an external-circle surface, wherein the two metal sealing rings are arranged on the upper portion and the lower portion of the hanger component, and three rubber sealing rings are arranged in the middle of the hanger component. A tubing nipple (5) is connected with the lower end of the hanger component, and a hard alloy layer is in bead weld on the external-circle surface of a by-pass port of the tubing spool (4). In addition, a sealing sleeve component is arranged in the channel port of the seam between the flange at the lower end of the tubing spool and the sleeve tube flange. The combination-sealed direction-dividing wear-resisting fracture mining well head equipment has the advantages of being capable of decomposing fracturing fluid erosion force and improving abrasion resistance of parts, safe and reliable in combination sealing and capable of enabling a sealing backing ring not to be damaged and the like, and being particularly suitable for being used on a high-pressure fracture mining well head.
Description
Technical field
The utility model relates to petroleum machinery, the wellhead assembly in the pressure break drilling-production equipment.
Background technology
Wellhead assembly is the visual plant of oil, natural gas extraction, usually formed by cover joint for pipe, tubing head and production tree three parts, be used for coupling sleeve tubing string, tubing string and oil and gas pipeline, by reaching the sealing between sleeve pipe and the oil pipe between each layer, control well mouth pressure and adjusting oil gas flow; Also can be used for special operations such as acidifying, pressure break, water filling, gas injecting mining or test.Existing pressure break exploitation wellhead assembly, the oil pipe four-way generally all is vertically to cross, fracturing fluid (containing sand grains) all enters the annular space of oil pipe and sleeve pipe from the horizontal direction of oil pipe four-way both sides, form directly and wash away being suspended on oil pipe in the oil pipe four-way, make the oil pipe rapid wearing, even can cause the oil pipe break accident, influence the productions of fracturing work and oil gas well.In addition, the used seal of hanger in the existing wellhead assembly mostly is rubber seal, and it is high pressure resistant, corrosion-resistant, the poor performance of anti-damage, and is easily accidents caused after the damage.So the pressure break producing oil gas well that washes away with deep-etching uses in high pressure, by force, shows not good enough.
Summary of the invention
At the problem of above-mentioned existence, the utility model is according to mechanics principle, combination sealing and surface strengthening technology, develop a kind of rational in infrastructure, wearing and tearing slowly, the oil-gas field fracturing exploitation wellhead assembly that prolongs of good airproof performance, life-span.
The utility model is made up of cover joint for pipe, tubing head, production tree, flap type, adpting flange and seal, connector, its innovation part is: the oil pipe four-way in the tubing head, two ends are flanges up and down, the left and right sides projection that assumes diamond in shape, the by-pass of the left and right sides is all downward-sloping, and acutangulates with up and down main channel and to cross; At upper end and the outer round surface of hanger parts, employing be that up and down two road metal o-rings, centre are the combined seal structures of three road rubber seal; With the tubing nipple that hanger parts lower end connects, its outer round surface built-up welding that is positioned at place, oil pipe four-way bypass road junction has hard alloy layer.In addition, in the following end flanges of oil pipe four-way and the seam crossing between the casing flange, both sides' passway, sealed gland part is housed.
Because in the oil pipe four-way of the present utility model, left and right sides passage and main channel acutangulate and cross, and make fracturing fluid effectively be decomposed the scouring force of the main channel in the oil pipe four-way and tubing nipple; The outer round surface that is washed away at tubing nipple and the equal built-up welding of channel surface of oil pipe four-way and be coated with hard alloy layer can effectively be resisted and of the fracturing fluidly be washed away and wear and tear; At the sealed gland part that following end flanges and the seam crossing between the casing flange of oil pipe four-way adds, can protect two gasket rings between the flange not to be subjected to of the fracturing fluid infringement; Adopt two road metal o-rings between hanger parts and oil pipe four-way, the oil pipe reducing joint in addition, the centre is the combined seal structure of three road rubber seal, set up defenses in depth, guarantee its sealing performance, improved the application life of wellhead assembly and the reliability of work, be particularly suitable for using at high pressure pressure break oil and gas extraction wellhead.
Description of drawings
Fig. 1 is the general structure schematic diagram of the utility model broken section;
Fig. 2 is the full section enlarged diagram of hanger parts in the utility model;
Fig. 3 is the full section enlarged diagram of sealed gland part in the utility model.
Component title in the accompanying drawing shown in the label is as follows:
1, casing nipple, 2, casing flange, 3, sealed gland part, 3-1, sealing shroud, 3-2, O RunddichtringO, 4, the oil pipe four-way, 5, tubing nipple, 6, the hanger parts, 6-1, hanger body, 6-2, holding screw, 6-3, assembly jack panel, 6-4, support ring, 6-5, metal o-ring, 6-6, rectangular rubber circle, 6-7, vertex of a cone pressure ring, 6-8, shaft block ring, 6-9, O type rubber ring, 6-10, metal lens pad, 7, the jackscrew parts, 8, the oil pipe reducing joint, 9, four-way, 10, flap type, 11, adpting flange, 12, gasket ring, 13, bolt and nut.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Among Fig. 1, the utility model is made up of cover joint for pipe, tubing head, production tree, flap type, adpting flange and seal, connector.The cover joint for pipe mainly comprises casing nipple (1) and casing flange (2); Tubing head mainly comprises oil pipe four-way (4), tubing nipple (5), hanger parts (6) and jackscrew parts (7); Production tree mainly comprises oil pipe reducing joint (8), four-way (9), many flap types (10) and adpting flange (11).Be carrier with the oil pipe four-way (4) in the tubing head: between the lower flange and the casing flange (2) in the cover joint for pipe of oil pipe four-way (4), between the upper flange of oil pipe four-way (4) and the oil pipe reducing joint (8) in the production tree, top, the inclined-plane of oil pipe four-way (4) left and right sides respectively with two flap types (10) of connecting and an adpting flange (11) between, gasket ring (12) all is housed, and with bolt and nut (13) they is connected into an integral body.The adpting flange (11) of production tree top is connected with oil production equipment respectively, be installed in two flap types (10) and an adpting flange (11) of the series connection of oil pipe four-way (4) left and right sides, link with fracturing unit respectively, in order to carry out the well fracturing oil producing operation.
Innovation part of the present utility model mainly shows the tubing head part.The one, oil pipe four-way (4) is designed to: two ends are flanges up and down, the left and right sides projection that assumes diamond in shape, and the by-pass of the left and right sides is all downward-sloping, and acutangulates with up and down main channel and to cross; The by-pass of the left and right sides and up and down the main channel cross angle between 30 °～60 °, in order to decompose of the fracturing fluid scouring force, and make it to be transformed into downward motive force.The 2nd, at upper end and the outer round surface of hanger parts (6), employing be that up and down two road metal o-rings, centre are the combined seal structures of three road rubber seal; Under the protection of metal o-ring up and down, prolong the application life of intermediate rubber sealing ring.The 3rd, with the tubing nipple (5) that hanger parts (6) lower end connects, its outer round surface built-up welding that is positioned at place, oil pipe four-way (4) bypass road junction has hard alloy layer, to improve the anti-wear performance of tubing nipple (5).
In addition, be further to improve the anti-wear performance of oil pipe four-way (4), in the by-pass of its left and right sides and the surface of main channel and by-pass intersection, be coated with hard alloy layer, to prolong its application life.
Among Fig. 2, hanger parts (6) in the tubing head are made up of hanger body (6-1), holding screw (6-2), assembly jack panel (6-3), support ring (6-4), metal o-ring (6-5), rectangular rubber circle (6-6), vertex of a cone pressure ring (6-7), shaft block ring (6-8), O type rubber ring (6-9), metal lens pad (6-10).Hanger body (6-1) is hollow rotary body, and the centre is through hole, is the conical screw hole of band guiding port at the two ends up and down of through hole, is used for installing and connection tubing nipple (5) and down-hole oil tube; A metal lens pad (6-10) is equipped with at the guiding port place of through hole upper end conical screw hole, is used for the radial gap between sealed suspension device body (6-1) and oil pipe reducing joint (8) through hole.The cylindrical top that hangs device body (6-1) is cylinder, has cut twice rectangular seal groove above with circlip groove, is used for installing O type rubber ring (6-9) and shaft block ring (6-8); The middle below of cylindrical is the boss platform of the lower sideband conical surface, and rectangular rubber circle (6-6) and vertex of a cone pressure ring (6-7) are housed above the boss platform; The conical surface of boss platform bottom, (6-5) matches with metal o-ring; The below of boss platform is the cylinder that has one section screw thread, is used for installing holding screw (6-2), pieces together jack panel (6-3) and support ring (6-4), is used for holder attached metal o-ring (6-5); Thereby forming up and down, two road metal o-rings, centre are the combined seal structures of three road rubber seal.In two road metal o-rings, upper track is is the boss platform in the middle of cylindrical, be the metal lens pad (6-10) of the conical surface up and down, and the cross section of following road metal o-ring (6-5) becomes parallelogram; In the three road rubber seal: the top twice are O type rubber rings (6-9), are used for the periphery of sealed suspension device body (6-1) and the slit between oil pipe reducing joint (8) endoporus; The below is rectangular rubber circle (6-6) together, under the acting in conjunction of boss platform, top vertex of a cone pressure ring (6-7) and jackscrew parts (7) in the middle of hanger body (6-1) is peripheral, main channel up and down and the annular space between hanger body (6-1) periphery of oil pipe four-way (4) repeated to seal.
In addition, for preventing that fracturing fluid is to the following end flanges that is positioned at oil pipe four-way (4) and the infringement of the gasket ring (12) on casing flange (2) bonding surface, in seam crossing under oil pipe four-way (4) between end flanges and the casing flange (2), both sides' the passway, sealed gland part (3) is housed.Sealed gland part (3) is made up of sealing shroud (3-1) and two kinds of parts of O RunddichtringO (3-2).Sealing shroud (3-1) is a joint hollow section, the inside and outside chamfering in two ends, the surface of its cylindrical and below, be processed with 1～2 road rectangular seal groove respectively, in adorn 2 or 4 O RunddichtringOs (3-2).The embodiment of Fig. 3, the common structure of being formed by a sealing shroud (3-1) and four O RunddichtringOs (3-2).Locate in passway and the passway on the casing flange (2) of end flanges down at oil pipe four-way (4), be processed with one deck diameter round platform rank identical with the degree of depth respectively, be used for installing sealed gland part (3), prevent displacement.
Claims (6)
1. combination sealing, branch are made up of cover joint for pipe, tubing head, production tree, flap type, adpting flange and seal, connector to wear-resisting pressure break exploitation wellhead assembly; It is characterized in that: the oil pipe four-way (4) in the tubing head, two ends are flanges up and down, the left and right sides projection that assumes diamond in shape, the by-pass of the left and right sides is all downward-sloping, and acutangulates with up and down main channel and to cross; At upper end and the outer round surface of hanger parts (6), employing be that up and down two road metal o-rings, centre are the combined seal structures of three road rubber seal; With the tubing nipple (5) that hanger parts (6) lower end connects, its outer round surface built-up welding that is positioned at place, oil pipe four-way (4) bypass road junction has hard alloy layer.
Combination sealing according to claim 1, divide to wear-resisting pressure break exploitation wellhead assembly, it is characterized in that: in the following end flanges of oil pipe four-way (4) and the seam crossing between the casing flange (2), both sides' passway, sealed gland part (3) is housed also.
Combination sealing according to claim 1, divide to wear-resisting pressure break exploitation wellhead assembly, it is characterized in that: in oil pipe four-way (4), the by-pass of the left and right sides and up and down the acute angle of main channel cross angle between 30 °～60 °.
4. combination sealing according to claim 1, branch are to wear-resisting pressure break exploitation wellhead assembly, it is characterized in that: the combined seal structure of hanger parts (6), in the two road metal o-rings, upper track is is the boss platform in the middle of cylindrical, be the metal lens pad (6-10) of the conical surface up and down, the cross section of following road metal o-ring (6-5) becomes parallelogram; In the three road rubber seal: the top twice are O type rubber rings (6-9), and the below is rectangular rubber circle (6-6) together.
5. combination sealing according to claim 1, branch are to wear-resisting pressure break exploitation wellhead assembly, and it is characterized in that: in oil pipe four-way (4), the surface of in the by-pass of the left and right sides and main channel and by-pass intersection is coated with hard alloy layer.
6. combination sealing according to claim 2, branch are to wear-resisting pressure break exploitation wellhead assembly, and it is characterized in that: sealed gland part (3) is made up of sealing shroud (3-1) and two kinds of parts of O RunddichtringO (3-2); Sealing shroud (3-1) is a joint hollow section, the inside and outside chamfering in two ends, the surface of its cylindrical and below, be processed with 1～2 road rectangular seal groove respectively, in adorn 2 or 4 O RunddichtringOs (3-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220756695 CN203066924U (en) | 2012-12-26 | 2012-12-26 | Combination-sealed direction-dividing wear-resisting fracture mining well head equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220756695 CN203066924U (en) | 2012-12-26 | 2012-12-26 | Combination-sealed direction-dividing wear-resisting fracture mining well head equipment |
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| CN203066924U true CN203066924U (en) | 2013-07-17 |
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| CN 201220756695 Expired - Lifetime CN203066924U (en) | 2012-12-26 | 2012-12-26 | Combination-sealed direction-dividing wear-resisting fracture mining well head equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089188A (en) * | 2012-12-26 | 2013-05-08 | 江苏宏泰石化机械有限公司 | Fracturing-extraction well head device with combined sealing, directional separation and abrasion resistance |
| WO2016100425A1 (en) * | 2014-12-16 | 2016-06-23 | Ge Oil & Gas Pressure Control Lp | System and method of reducing erosion in frac applications |
| US11149167B1 (en) | 2020-04-10 | 2021-10-19 | Formula No. 37, Llc | Methods for preparing coating compositions for protecting oilfield operational components |
-
2012
- 2012-12-26 CN CN 201220756695 patent/CN203066924U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089188A (en) * | 2012-12-26 | 2013-05-08 | 江苏宏泰石化机械有限公司 | Fracturing-extraction well head device with combined sealing, directional separation and abrasion resistance |
| WO2016100425A1 (en) * | 2014-12-16 | 2016-06-23 | Ge Oil & Gas Pressure Control Lp | System and method of reducing erosion in frac applications |
| US10151188B2 (en) | 2014-12-16 | 2018-12-11 | Ge Oil & Gas Pressure Control Lp | System and method of reducing erosion in frac applications |
| US11149167B1 (en) | 2020-04-10 | 2021-10-19 | Formula No. 37, Llc | Methods for preparing coating compositions for protecting oilfield operational components |
| US11413652B2 (en) | 2020-04-10 | 2022-08-16 | Formula No. 37, Llc | Coated oilfield operational components and methods for protecting and extending the service life of oilfield operational components |
| US11446700B1 (en) | 2020-04-10 | 2022-09-20 | S+S Industries Technology Llc | Methods for preparing coating compositions for protecting oilfield operational components |
| US11484909B1 (en) | 2020-04-10 | 2022-11-01 | S+S Industries Technology Llc | Coated oilfield operational components and methods for protecting and extending the service life of oilfield operational components |
| US11559826B2 (en) | 2020-04-10 | 2023-01-24 | S+S Industries Technology Llc | Methods for providing flexible and/or elastic coatings on oilfield operational components |
| US11583892B1 (en) | 2020-04-10 | 2023-02-21 | S+S Industries Technology Llc | Coated oilfield operational components and methods for protecting and extending the service life of oilfield operational components |
| US11596976B2 (en) | 2020-04-10 | 2023-03-07 | S+S Industries Technology Llc | Methods for preparing coating compositions for protecting oilfield operational components |
| US11618055B2 (en) | 2020-04-10 | 2023-04-04 | S+S Industries Technology Llc | Methods for providing flexible and/or elastic coatings on oilfield operational components |
| US11826780B2 (en) | 2020-04-10 | 2023-11-28 | S+S Industries Technology Llc | Methods for providing flexible and/or elastic coatings on oilfield operational components |
| US11845107B2 (en) | 2020-04-10 | 2023-12-19 | S+S Industries Technology Llc | Methods for protecting oilfield operational components from damage from fluid flow |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |