CN208280932U - A kind of anchoring type wellhead assembly - Google Patents

Abstract

The utility model discloses a kind of anchoring type wellhead assemblies, including multi-functional box cupling, the interior lower end of the multi-functional box cupling is equipped with the first box cupling channel, the bosom of the multi-functional box cupling is equipped with the second box cupling channel, the inner upper end of the multi-functional box cupling is equipped with third box cupling channel, the upper and lower ends in second box cupling channel are connected to third box cupling channel and the first box cupling channel respectively, the inner top side internal screw thread of the multi-functional box cupling, the threaded upper ends of the multi-functional box cupling are connected with pressure cap, the lower end outside wall of the pressure cap is equipped with external screw thread, the middle part of the pressure cap is run through equipped with pressure cap channel up and down, slips is equipped between the multi-functional box cupling and pressure cap, the middle part of the slips is run through equipped with slips channel up and down, the utility model fully meets coiled tubing mining working condition demand, it is small in size, it is easy for installation, it is real It is strong, safe and reliable with property, it is the currently the only wellhead assembly for being able to satisfy coiled tubing mining operation.

Description

A kind of anchoring type wellhead assembly

Technical field

The utility model relates to gaslift mining technical field, specific field is a kind of anchoring type wellhead assembly.

Background technique

Anchoring type wellhead assembly is to apply in shale gas well, oil/gas well, coal bed gas well mining tubing string technical field of operation, by It is very different in coiled tubing gaslift mining process pipe string operation and conventional mining tubing string operation, so to gas well production tree Functional requirement must satisfy mining process conditions requirement, and gas well operation at present uses tubing string Suspension Technique, can not be applied to gaslift Mining process pipe string operation.

Utility model content

The purpose of this utility model is to provide a kind of anchoring type wellhead assemblies, to solve coiled tubing mining technique The suspension of tubing string, any working condition requirement for adjusting liquid level.

To achieve the above object, the utility model provides the following technical solutions: a kind of anchoring type wellhead assembly, including more function The interior lower end of energy box cupling, the multi-functional box cupling is equipped with the first box cupling channel, and the bosom of the multi-functional box cupling is equipped with Second box cupling channel, the inner upper end of the multi-functional box cupling are equipped with third box cupling channel, second box cupling channel up and down Both ends are connected to third box cupling channel and the first box cupling channel respectively, the inner top side internal screw thread of the multi-functional box cupling, described The threaded upper ends of multi-functional box cupling are connected with pressure cap, and the lower end outside wall of the pressure cap is equipped with external screw thread, the middle part of the pressure cap Up and down through pressure cap channel is equipped with, slips is equipped between the multi-functional box cupling and pressure cap, the middle part of the slips is run through up and down Equipped with slips channel, the inner sidewall of the slips is uniformly provided with slip groove, and slips tooth is connected on the slip groove.

Preferably, the quantity of the slips tooth is 4.

Preferably, the diameter in second box cupling channel, pressure cap channel and slips channel is equal.

Preferably, the inner top side of the multi-functional box cupling is equipped with limit inner process.

Preferably, the outside lower end of the pressure cap is equipped with limit outer protrusion.

Compared with prior art, the utility model has the beneficial effects that a kind of anchoring type wellhead assembly, anchoring type well head machine Coiled tubing can be firmly anchored on well head by tool lockmaking design, securely and reliably；Structure design is simple and practical, cleverly variable diameter Technology design realizes lockmaking unlocking function, increases service life；Mechanical lockmaking, unlock is easy to operate, need to only adjust screw thread pressure Lockmaking or unlocking function can be realized in cap.

Detailed description of the invention

Fig. 1 is the main view the schematic diagram of the section structure of the utility model；

Fig. 2 is the overlooking structure diagram of the utility model；

Fig. 3 is the main view the schematic diagram of the section structure of the multi-functional box cupling of the utility model.

In figure: the multi-functional box cupling of 1-, the first box cupling of 2- channel, the second box cupling of 3- channel, 4- third box cupling channel, 5- pressure Cap, 6- pressure cap channel, 7- slips, 8- slips channel, 9- slip groove, 10- slips tooth.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of anchoring type wellhead assembly, including it is multi-functional The interior lower end of box cupling 1, the multi-functional box cupling is equipped with the first box cupling channel 2, and the bosom of the multi-functional box cupling is equipped with Second box cupling channel 3, the inner upper end of the multi-functional box cupling are equipped with third box cupling channel 4, second box cupling channel it is upper Lower both ends are connected to third box cupling channel and the first box cupling channel respectively, and the inside of multi-functional box cupling is passed through up and down by box cupling channel It is logical, it is used for across coiled tubing, and the lower part in third box cupling channel is the conical surface for accommodating slips, diameter tapers downwardly, The top in third box cupling channel is then used to install pressure cap, and the second box cupling channel avoids card for limiting the position of slips Watt from the lower end of multi-functional box cupling deviate from, can install in the first box cupling channel when needing others external components, it is described more The inner top side internal screw thread of function box cupling, for being threadedly coupled with pressure cap, the threaded upper ends of the multi-functional box cupling are connected with pressure Cap 5, the lower end outside wall of the pressure cap are equipped with external screw thread, and pressure cap is threaded on multi-functional box cupling, can be by towards difference Direction rotation pressure cap move up and down pressure cap on multi-functional box cupling, the middle part of the pressure cap is run through equipped with pressure cap channel up and down 6, pressure cap channel passes through pressure cap for coiled tubing, and slips 7 is equipped between the multi-functional box cupling and pressure cap, and slips is arranged in more function It can play the role of compressing, the middle part of the slips to slips by rotating pressure cap and moving down between box cupling and pressure cap Up and down through slips channel 8 is equipped with, slips channel passes through slips for coiled tubing, and the inner sidewall of the slips is uniformly provided with slips Slot 9, slip groove are used to accommodate slips tooth, and slips tooth 10 is connected on the slip groove, and slips tooth is inserted into slip groove, Since the lower end of slips tooth is extend into slip groove, slips tooth will not be deviate from from slip groove when device normal use, to moving up Latch may be driven by coiled tubing and move up during dynamic coiled tubing, but due to coiled tubing be blocked in slips tooth it Between, slips tooth is limited, does not fall out slips tooth in normal use, rotation pressure cap makes pressure cap move down extruding card Watt, move downward slips, while slip insert prolongs the conical surface and realizes variable diameter to contract, and coiled tubing is clamped, and realizes that anchoring connects Continuous oil pipe only needs opposite direction to rotate pressure cap when needing to stretch coiled tubing, and pressure cap is made no longer to oppress slips, and slips is in certainly By state, it can use by oneself stretch coiled tubing at this time, after having adjusted coiled tubing, then pressure cap be compressed, be anchored continuous oil Pipe starts variable diameter under the action of slip insert during the adjustment of pressure cap is in the conical surface, realizes anchoring or unlocking function.

Specifically, the quantity of the slips tooth is 4.

Specifically, the diameter in second box cupling channel, pressure cap channel and slips channel is equal.

Specifically, the inner top side of the multi-functional box cupling is equipped with limit inner process.

Specifically, the outside lower end of the pressure cap is equipped with limit outer protrusion, limit inner process and limit outer protrusion are mutual Cooperation, can deviate from from multi-functional box cupling to avoid pressure cap.

Working principle: it when gas well gaslift mining operation needs to extend upward or downward adjustment mining liquid level, needs to connect Continuous oil pipe column fluid column into well extends or pulls out a certain distance, counterclockwise opens pressure cap at this time, presses pressure cap no longer Compel slips, so that slips be in free state, keep device in the unlocked state, the coiled tubing tubing string of slip insert relieving at this time can be with The depth deep to coiled tubing tubing string is adjusted, and when reaching purpose liquid level, again compresses pressure cap clockwise after adjusting, It is mobile to squeeze slips when pressure cap prolongs screw thread rotation for adjustment pressure cap clockwise, while slip insert prolongs the conical surface and becomes to contract realization Anchoring string can be realized in diameter, and device is made to be in lockmaking state.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of anchoring type wellhead assembly, including multi-functional box cupling (1), it is characterised in that: the inside of the multi-functional box cupling (1) Lower end is equipped with the first box cupling channel (2), and the bosom of the multi-functional box cupling (1) is equipped with the second box cupling channel (3), described more The inner upper end of function box cupling (1) be equipped with third box cupling channel (4), the upper and lower ends in second box cupling channel (3) respectively with Third box cupling channel (4) is connected to the first box cupling channel (2), the inner top side internal screw thread of the multi-functional box cupling (1), described more The threaded upper ends of function box cupling (1) are connected with pressure cap (5), and the lower end outside wall of the pressure cap (5) is equipped with external screw thread, the pressure cap (5) middle part is run through equipped with pressure cap channel (6) up and down, is equipped with slips (7) between the multi-functional box cupling (1) and pressure cap (5), institute The middle part for stating slips (7) is run through equipped with slips channel (8) up and down, and the inner sidewall of the slips (7) is uniformly provided with slip groove (9), Slips tooth (10) are connected on the slip groove (9).

2. a kind of anchoring type wellhead assembly according to claim 1, it is characterised in that: the quantity of the slips tooth (10) is 4。

3. a kind of anchoring type wellhead assembly according to claim 1, it is characterised in that: second box cupling channel (3), pressure The diameter of cap channel (6) and slips channel (8) is equal.

4. a kind of anchoring type wellhead assembly according to claim 1, it is characterised in that: the multi-functional box cupling (1) it is interior Side upper end is equipped with limit inner process.

5. a kind of anchoring type wellhead assembly according to claim 1, it is characterised in that: the outside lower end of the pressure cap (5) Equipped with limit outer protrusion.