CN104018809B

CN104018809B - A kind of subsea equipment flushing tool

Info

Publication number: CN104018809B
Application number: CN201410160348.7A
Authority: CN
Inventors: 肖文生; 刘忠砚; 侯超; 王鸿雁
Original assignee: China University of Petroleum East China
Current assignee: China University of Petroleum East China
Priority date: 2014-04-22
Filing date: 2014-04-22
Publication date: 2019-03-22
Anticipated expiration: 2034-04-22
Also published as: CN104018809A

Abstract

The invention discloses a kind of subsea equipment flushing tools, including tool joint, tool body, flush-through connection and the guiding plug being successively connected from top to bottom along same axis, cavity is equipped with inside the tool joint, tool body and flush-through connection in the axial direction, on the side wall of tool body and flush-through connection, all it is evenly provided with several through-holes being connected with cavity, tool body is equipped with the landing ring for being socketed on tool body, anti-rotation device is additionally provided on the side wall of tool body, it prevents from during the rinsing process, there is a phenomenon where tenesmus, trackslipping.

Description

A kind of subsea equipment flushing tool

Technical field

The present invention relates to oil-well drilling equipment fields, more particularly to a kind of subsea equipment flushing tool.

Background technique

With the reduction of landing field petroleum and gas resources, oil, gas exploitation are marched to ocean, and have been achieved for significantly at Fruit.Underwater well head system is the important component of offshore and gas development, exploration, phase function except implement in drilling process connection, The circulation of drilling fluid channel for supporting preventer group to be formed, and connect production tree after complete well and formed outside oil-gas transportation channel, also have There is the function of control subsea wellheads bottom pressure.

Currently, the core technology of underwater well head system is monopolized in developed countries such as Europe, the United States always in world wide, China Under water well head system research and development, using etc. be constantly in space state, subsea equipment flushing tool belongs under water The auxiliary facility of wellhead assembly is realized flushing action to the sundries in well head inner wall and ambient enviroment using highly pressurised liquid, is had The features such as structure is simple, reliability and durability.

Summary of the invention

Technical problem to be solved by the invention is to provide a kind of subsea equipment flushing tools, prevent flushed Cheng Zhong, there is a phenomenon where trackslipping, to solve the above-mentioned many defects caused by the prior art.

To achieve the above object, the present invention provides a kind of technical solution below: subsea equipment flushing tool, packet Include tool joint, tool body, flush-through connection and the guiding plug being successively connected from top to bottom along same axis, the drilling rod connecting It is equipped with cavity inside head, tool body and flush-through connection in the axial direction, on the side wall of tool body and flush-through connection, all equably Equipped with the through-hole that several are connected with cavity, tool body, which is equipped with, is socketed on the landing ring of tool body, on the side wall of tool body It is additionally provided with anti-rotation device.

Preferably, the upper end of the tool body is set on the side wall of tool body vertically with axis oppositely extending formation convex block There are perpendicular to the axis, end to end shallow grooves, opening baffle ring is equipped in shallow grooves, the landing ring setting is in convex block and opening Between baffle ring.

Preferably, the thickness of the landing ring and convex block are consistent to the distance between shallow grooves.

Preferably, the anti-rotation device includes the antirotation keys equipped with inner groovy, and the side wall of the tool body is equipped with deep recessed Slot, antirotation keys are arranged in deep groove, and the spring being in contact with deep groove bottom surface, anti-rotation key top are equipped in the inner groovy of antirotation keys It is designed with notch at the top of portion and deep groove, is equipped with the screw being in contact with antirotation keys top notch at deep groove top notch.

Preferably, the anti-rotation device is equipped at least two, and equidistantly distributed is on the lateral wall of tool body.

Preferably, the flush-through connection includes the flushing short circuit head mutually connected vertically and rinses lengthening joint, rinses and is shorted The end of head is connected with tool body, and the end of flush-through connection is connected with guiding plug.

Preferably, trapezoidal thread built in the top of the tool joint, the tool body and tool joint, tool body and punching Wash short circuit head and rinse lengthening joint and rinse short circuit head between be all made of trapezoidal thread be connected.

It is using the beneficial effect of above technical scheme: when underwater well head system is worked with flushing tool, landing ring card In position, it prevents tool from integrally falling, drilling rod high pressure flushing liquid entering tool inner chamber body is connected in tool joint, passes through work Specifically, the through-hole rinsed on long short circuit head projects, and realizes high-pressure water jet when flushing tool operation and sprays, realizes and rinse function Can, antirotation keys can block tool body, to prevent tool body under the active force of water flow, opposite trackslip occurs.

Tool joint is connected by trapezoidal thread with the drilling rod above it, tool body and tool joint, flushing short circuit head with And be all made of connected can be effectively prevented of trapezoidal thread between the long and short connector of flushing and release, fall button, there is landing on tool body Ring, by being open, baffle ring is fixed, and landing ring outer diameter is larger, it can be achieved that the card of tool body is put, and prevents from dropping；Tool body, punching Wash short circuit head, rinse in lengthening joint and equably gather some through-holes, for realizing liquid high-pressure injection and go out, to well head inner wall And the sundries in ambient enviroment realizes flushing action, antirotation keys are fixed by screw, guarantee its exposing by spring force, reveal always It can guarantee that other downhole tools that will be fixed thereon are fixed when out, prevent it from opposite trackslip occurs.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of subsea equipment flushing tool of the present invention；

Fig. 2 is a kind of cross-sectional view of subsea equipment flushing tool of the present invention；

Fig. 3 is the cross-sectional view of tool body shown in Fig. 1；

Fig. 4 is the structural schematic diagram of anti-rotation device shown in Fig. 1.

Wherein, 1-- tool joint, 2-- tool body, 3-- landing ring, 4-- opening baffle ring, 5-- antirotation keys, 6-- flushing are short Connector, 7-- rinse lengthening joint, 8-- guiding plug, 9-- through-hole, 10-- screw, 11-- spring, 12-- convex block, 13-- shallow grooves, 14-- inner groovy, 15-- deep groove, 16-- notch, 17-- anti-rotation device.

Specific embodiment

A kind of preferred embodiment of subsea equipment flushing tool that the invention will now be described in detail with reference to the accompanying drawings.

Fig. 1 shows a kind of specific embodiment of subsea equipment flushing tool of the present invention: a kind of underwater well head dress Set with flushing tool, including be successively connected from top to bottom along same axis tool joint 1, tool body 2, flush-through connection and lead To plug 8, it is equipped with cavity, tool body 2 and flush-through connection in the axial direction inside tool joint 1, tool body 2 and flush-through connection Side wall on, be all evenly provided with several through-holes 9 being connected with cavity, tool body 2 is equipped with the connection for being socketed on tool body 2 Apical ring 3 is additionally provided with anti-rotation device 17 on the side wall of tool body 2, and anti-rotation device 17 is equipped with 4, and equidistantly distributed is in tool body 2 On lateral wall.

In conjunction with Fig. 2 and Fig. 3, flush-through connection includes the flushing short circuit head 6 mutually connected vertically and flushing lengthening joint 7, tool Body 2 rinses short circuit head 6, rinses in lengthening joint 7 and equably gather some through-holes 9, for realizing liquid high-pressure injection and go out, Flushing action is realized to the sundries in the borehole wall and ambient enviroment, the end for rinsing short circuit head 6 is connected with tool body 2, and flushing connects The end of head is connected with guiding plug 8, trapezoidal thread built in the top of tool joint 1, tool body 2 and tool joint 1, tool Trapezoidal thread is all made of between body 2 and flushing short circuit head 6 and flushing lengthening joint 7 and flushing short circuit head 6 to be connected, it can be effectively It prevents tool body 2 and tool joint 1, tool body 2 and rinses short circuit head 6 and rinse lengthening joint 7 and rinse between short circuit head 6 It releases, fall button, in use can according to field condition, lengthening joint 7 will be rinsed by, which selecting, is directly connected with tool body 2, Or tool body 2, flushing short circuit head 6 and flushing lengthening joint 7 are sequentially connected.

The upper end of tool body 2 is vertically with the oppositely extending formation convex block 12 of axis, and the side wall of tool body 2 is equipped with and axis Vertically, end to end shallow grooves 13, shallow grooves 13 are interior to be equipped with opening baffle ring 4, and the setting of landing ring 3 is in convex block 12 and the baffle ring that is open Between 4, the thickness and convex block 12 of landing ring 3 are consistent to the distance between shallow grooves 13, have landing ring 3 on tool body 2, by opening Mouthful baffle ring 4 is fixed, and 3 outer diameter of landing ring is larger, it can be achieved that the card of tool body 2 is put, and prevents from dropping.

As shown in figure 4, anti-rotation device 17 includes the antirotation keys 5 equipped with inner groovy 14, the side wall of tool body 2 is equipped with deep recessed Slot 15, antirotation keys 5 are arranged in deep groove 15, and the bullet being in contact with 15 bottom surface of deep groove is equipped in the inner groovy 14 of antirotation keys 5 Spring 11 is designed with notch 16 at the top of the top of antirotation keys 5 and deep groove 15, is equipped at 15 top notch 16 of deep groove and antirotation keys 5 The screw 10 that top notch 16 is in contact, antirotation keys 5 are fixed by screw 10, guarantee its exposing by 11 elastic force of spring, reveal always It can guarantee for underwater well head system to be fixed in well with flushing tool when out, prevent it from opposite trackslip occurs.

When underwater well head system is worked with flushing tool, landing ring 3 block in position, prevent tool integrally under It falls, jointed rod in tool joint 1, so that high pressure flushing liquid entering tool inner chamber body, by tool body 2, rinses 7 and of lengthening joint The through-hole 9 rinsed on short circuit head 6 projects, and high-pressure water jet when flushing tool operation sprays, and realizes pre-washing function, antirotation keys 5 Tool body 2 can be blocked, to prevent tool body 2 under the active force of water flow, opposite trackslip occurs.

What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention Protection scope.

Claims

1. a flushing tool for an underwater wellhead device, comprising drill pipe joints, tool bodies, flushing joints and guide plugs that are connected along the same axis from top to bottom, it is characterized in that: the drill pipe joints, tool bodies The inside of the flushing joint is provided with a cavity in the axial direction, the tool body and the side wall of the flushing joint are evenly provided with a number of through holes connected to the cavity, and the tool body is provided with a socket sleeved on the tool body. The top ring, the side wall of the tool body is also provided with an anti-rotation device; the upper end of the tool body extends vertically and in the opposite direction of the axis to form a convex block, and the side wall of the tool body is provided with a shallow, end-to-end connection perpendicular to the axis. a groove, an open stop ring is arranged in the shallow groove, and the landing ring is arranged between the convex block and the open stop ring; the anti-rotation device includes an anti-rotation key provided with an inner groove, and the tool body is provided with an anti-rotation key. There is a deep groove on the side wall, the anti-rotation key is arranged in the deep groove, the inner groove of the anti-rotation key is provided with a spring that contacts the bottom surface of the deep groove, and the top of the anti-rotation key and the top of the deep groove are provided with a spring. There is a gap, a screw contacting with the gap on the top of the anti-rotation key is arranged at the gap at the top of the deep groove, and a through hole is also arranged on the top of the anti-rotation key, which communicates the outside of the tool body with the deep groove.

2 . The flushing tool for an underwater wellhead system according to claim 1 , wherein the thickness of the landing ring is the same as the distance between the bump and the shallow groove. 3 .

3 . The flushing tool for an underwater wellhead system according to claim 1 , wherein at least two anti-rotation devices are provided, which are distributed on the outer side wall of the tool body at equal intervals. 4 .

4. The flushing tool for an underwater wellhead system according to claim 1, wherein the flushing joint comprises a short flushing joint and a long flushing joint that are vertically connected to each other, and the end of the short flushing joint is connected to the tool body , the end of the flush fitting is connected to the guide plug.

5. The flushing tool for an underwater wellhead system according to claim 4, wherein the top of the drill pipe joint has a built-in trapezoidal thread, the tool body and the drill pipe joint, the tool body and the flushing short joint and the flushing long joint The fittings and flush short fittings are connected by trapezoidal threads.