Drilling mud splashproof joint
Technical field
The present invention relates to a kind of drilling tool, especially a kind of drilling mud splashproof joint, belong to drilling-production equipment and accessory
Technical field.
Background technology
, need to be by kelly bar and drilling rod point when creeping into certain size in the drilling process of exploitation oil and natural gas
From and connect single drill pipe, but due to being now full of drilling mud in kelly bar, in the moment for dismantling kelly bar, in kelly bar
Mud will jet flow and go out, flow on drilling platforms, in turn result in the waste of mud, and deteriorate operating mode, brought to operating personnel
Greatly inconvenience.
The method ignored is taken this case part drilling team in present drilling engineering, and also part drilling team is using peace
Plug valve is filled to solve this kind of problem.But there is the problems such as too high cost, maloperation, complex operation in installation plug valve.At present
There is the joint for solving this problem, but have that cost is higher, and structure type is single, service life is shorter, can not be complete when connecting
Prevent many defects such as mud leakage.
The content of the invention
The goal of the invention of the present invention is:For above-mentioned problem, there is provided a kind of drilling mud splashproof joint, pass through
The use of the joint, it can effectively prevent the problem of mud is revealed in kelly bar when kelly bar separates with drilling rod.
The technical solution adopted by the present invention is as follows:
A kind of drilling mud splashproof joint, include the body of tubulose, one end of body is kelly bar connection end, and the other end is
Drilling rod connection end, the inner chamber of body are fixedly installed sealing chipware, and the sealing chipware external diameter is less than body internal diameter and forms use
In the ring cavity that mud passes through, the inner chamber of body be additionally provided with can way moving sealing seat ring, the sealing seat ring is positioned at sealing
Section where between chipware and drilling rod connection end, and seal seat ring and be assemblied in by elastic component in body, and the elasticity for passing through elastic component
Power cooperation forms sealing between chamber body, sealing chipware, realizes the closing of joint, when sealing seat ring is come from drill with ferrule
Bar is mobile when connecting the mud pressure of extreme direction and is separated with sealing chipware, realizes the unlatching of joint.
Further, the sealing chipware includes meeting stream end and the back of the body towards drilling rod connection end towards kelly bar connection end
End is flowed, the stream end and back of the body stream end of meeting is streamlined structure, and the sealing seat ring coordinates with back of the body stream end to be sealed.
Further, the sealing chipware includes meeting stream end and the back of the body towards drilling rod connection end towards kelly bar connection end
End is flowed, described to meet fixing assembling between stream end and back of the body stream end and form overall structure, the sealing seat ring cooperation position at back of the body stream end is set
There is the first alloy hoop, the first alloy hoop cooperation at sealing seat ring and the back of the body stream end is sealed.
Further, the first alloy hoop press fit arrangement in meet stream end and the back of the body stream end between.
Further, the sealing chipware is fixed by the wing plate of chamber body circumferentially.
Further, the inner chamber of the body offers an annular groove, and circumferentially at least two pieces of assembling is solid for whole annular groove
Determine ring, the external diameter end of wing plate is assemblied in the inner chamber of body by adjacent retainer ring inlay card, and sealing chipware offers pacifies for wing plate
The cell body of dress, the inner-diameter end of wing plate are installed by sealing the cell body on chipware with sealing chipware inlay card.
Further, the inner end diameter face towards kelly bar connection end of the sealing seat ring is a taper surface, seal receptacle
Ring passes through the taper surface and sealing chipware fitted seal.
Further, the end set towards kelly bar connection end of the sealing seat ring has the second alloy hoop.
Further, it is described sealing seat ring be assemblied in by the compression spring being arranged thereon in body, sealing seat ring with
The space for assembling compression spring is formed between body, and the space between the inner chamber of seal and body by being insulated.
Further, stomata is offered on the wall of body position where the compression spring assembly space.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows:
1st, the drilling mud splashproof joint is skillfully constructed, is rational in infrastructure reliable, and providing elastic force by elastic component will
Sealing seat ring is placed between sealing chipware and body the sealing for realizing joint, when sealing seat ring by Fluid pressure with sealing chipware point
From and realize the opening of joint, rational structure design make it that its operating is reliable, can effectively solve now current make up a joint
During drilling rod the problem of caused mud leakage so that mud will not be leaked on rig floor, and operating mode has obtained effectively changing
Kind, the working environment of drill-well operation worker has very big lifting compared to before, while decreases unnecessary mud and waste;
2nd, there is advantage easy to operate compared to the plug valve used before, this mud saver joint, the joint is whole
Sealing and opening procedure realize will not have maloperation to cause the situation for suppressing pump without manual intervention automatically, also will not be every
Secondary use also needs to carry out valve operation, time saving and energy saving, and the structure is also lower compared to plug valve cost;
3rd, by the design of streamlined sealing chipware, solve the problems, such as the anti-slurry erosion difference of conventional valves, effectively avoid
Mud causes serious erosion to core with 90 ° of right angles, and the right angle impact of mud can be changed into oblique angle water conservancy diversion by airflow design,
Substantially reduce erosion of the mud to inner core;
4th, other positions of erosion can not be avoided, such as the first alloy hoop and the second alloy ring position, employs wearability more
Good alloy, to improve the erosion resistance of joint, and the design of alloy hoop is used, it also avoid whole joint using costliness
Alloy material so that the production cost of the joint is controlled;
5th, the joint, the assembly structure design of the sealing chipware particularly in joint so that assembling process is simple, and can tie up
It is good to protect performance;
6th, joint of the invention is compared with congenerous other instruments, have good airproof performance, service life it is long, it is easy to operate,
Lower-cost advantage.
Brief description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 be drilling mud splashproof joint of the present invention closed mode under structural representation,
Fig. 2 be drilling mud splashproof joint of the present invention opening under structural representation;
Fig. 3 is the installation cross section structure schematic diagram of the sealing chipware of drilling mud splashproof joint of the present invention.
Marked in figure:1- bodies, 2- kelly bars connection end, 3- drilling rods connection end, 4- sealings chipware, 41- meet stream end, 42-
Back of the body stream end, the alloy hoops of 43- first, 44- transition rings, 45- wing plates, 46- retainer rings, 5- sealings seat ring, the alloy hoops of 51- second, 52-
Seal, 53- compression springs, 54- stomatas, 6- ring cavities.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification, unless specifically stated otherwise, can be equivalent by other or with similar purpose
Alternative features are replaced.I.e., unless specifically stated otherwise, each feature is an example in a series of equivalent or similar characteristics
.
Embodiment
The drilling mud splashproof joint of the present invention, its structure is as shown in figure 1, the body 1 including tubulose, one end of body 1
For kelly bar connection end 2, the other end is drilling rod connection end 3, and the inner chamber of body 1 is fixedly installed sealing chipware 4, seals chipware 4
External diameter is less than the internal diameter of body 1 and forms the ring cavity 6 passed through for mud, the inner chamber of body 1 be additionally provided with can way moving it is close
Seat ring 5, the sealing seat ring 5 section where between sealing chipware 4 and drilling rod connection end 3 are sealed, and seals seat ring 5 and passes through elastic component
It is assemblied in body 1, and is matched with by the elastic force of elastic component between the inner chamber of body 1, sealing chipware 4 to form sealing, it is real
The closing of existing joint, it is mobile when sealing seat ring 5 by the mud pressure for coming from the direction of kelly bar connection end 2 and with sealing chipware
4 separation, realize the unlatching of joint.
In the present embodiment, the inner chamber of body 1 is used to install sealing chipware 4 and sealing seat ring 5, and ring cavity is used to lead to
Mud is crossed, the elastic force provided using elastic component realizes sealing of the sealing seat ring 5 to ring cavity between sealing chipware 4 and body 1, when close
Moved when sealing seat ring 5 by slurry fluid pressure, and realize the opening of ring cavity so that mud is by sealing chipware 4 and seal receptacle
Ring 5, the unlatching of joint is realized, when needing to add single, slush pump is closed and kelly bar connection end 2 no longer has Fluid pressure,
Sealing seat ring 5 is realized that the mobile ring cavity 6 between sealing chipware 4 and body 1 seals by elastic force.The drilling mud splashproof
The above-mentioned principle and structure design of joint make it that operating is reliable, can effectively solve caused by during now current make up a joint
The problem of mud is revealed.In present embodiment seal chipware 4 structure be not specifically limited, can be Polygonal column shape, cylinder,
The structure such as circular, oval or streamlined.Elastic component can use compression elastic piece or draw springs in present embodiment
Deng, it is only necessary to elastic-restoring force of the sealing seat ring 5 to sealing chipware 4 direction is provided.
In specific design, area possessed by ring cavity 6 is identical with the inner ring area for sealing seat ring 5, such design purport
Reducing the change of rate of flow of fluid, preventing from damming to form high-velocity fluid device is caused excessively to wash away.
Based on above-mentioned global design, sealing chipware 4 is further designed in another embodiment, sealed core
Part 4 includes meeting stream end 41 and back of the body stream end 42 towards drilling rod connection end towards kelly bar connection end, described to meet stream end 41 and the back of the body
It is streamlined structure to flow end 42, and sealing seat ring 5 coordinates with back of the body stream end 42 to be sealed.The design of streamlined sealing chipware 4, solution
The problem of certainly conventional valves design slurry erosion is destructive strong, effectively avoids mud from being caused seriously to core with 90 ° of right angles
The right angle impact of mud can be changed into oblique angle water conservancy diversion, substantially reduce erosion of the mud to inner core, simultaneously by erosion, airflow design
The resistance of slurry transportation process greatly reduces in airflow design.The overall structure that chipware 4 can be a unit piece is sealed,
It can also be the overall structure being assembled using multiple unit pieces.
In another embodiment of streamlined sealing chipware 4, sealing chipware 4 is included towards kelly bar connection end
Stream end 41 and the back of the body stream end 42 towards drilling rod connection end are met, fixing assembling between stream end 41 and back of the body stream end 42 is met and forms overall knot
Structure, the sealing seat ring cooperation position at back of the body stream end 42 are provided with the first alloy hoop 43, and sealing seat ring 5 is by carrying on the back first on stream end 42
Alloy hoop 43, which coordinates, to be sealed.The main purpose of the design is that the first alloy hoop 43 and seal receptacle are used in chipware 4 is sealed
Coordinate between ring 5 and sealed, the first alloy hoop 43 is to use erosion wear resistance material to be made to ensure the Anti-erosion energy of sealing chipware 4
Power, to improve the reliability of sealing structure.Meet stream end 41 and the back of the body stream end 42 be particularly connected through a screw thread it is integral, in order to
The installation of first alloy hoop 43, a part of first alloy hoop 43 as back of the body stream end 42, formed with the remainder at back of the body stream end 42
The back of the body stream end 42 of whole streamlined structure.
Based under the embodiment, the first alloy hoop 43 is press fit arrangement in meeting between stream end 41 and back of the body stream end 42
's.Because after meeting stream end 41 and carrying out oblique angle water conservancy diversion to mud, the big path position at back of the body stream end 42 has maximum
Impulsive force, the first alloy hoop 43 can ensure Anti-erosion effect at back of the body stream 42 big path position of end.
Or it is yet another have in the assembly method of the first alloy hoop 43, the first alloy hoop 43 and the back of the body stream end 42 between also pass through
One transition rings 44 are assembled, specifically, the first alloy hoop 43 and transition rings 44 are pressed together on successively meets stream end 41 and back of the body stream end 42
Between, and be fixed by meeting the threaded connection between stream end 41, back of the body stream end 42, the first alloy hoop 43, transition rings 44 turn into stream
One part at line style back of the body stream end 42.
Design based on the respective embodiments described above, in another embodiment, the fixed form also to sealing chipware
It is described in further detail.As shown in Fig. 2 sealing chipware 4 is fixed by the wing plate 45 of chamber body circumferentially.It is close
The fixation of envelope chipware 4 and wing plate 45 can be by welding, being threadedly coupled or assembly method is realized, and wing plate 45 and the inner chamber of body 1
Connection can also by weld, be threadedly coupled or assembly method realize.
Based on the fixed form of the sealing chipware 4, a kind of consolidating for assembling is also specifically described in another embodiment
Determine mode, as shown in Figure 2 and shown in Fig. 3, the inner chamber of body 1 offers an annular groove, and whole annular groove circumferentially assembles at least
Two pieces of retainer rings 46(It is 3 pieces in the present embodiment), wing plate 45(Totally three pieces)External diameter end assembled by the adjacent inlay card of retainer ring 46
In the inner chamber of body 1, sealing chipware 4 offers the cell body installed for wing plate 45, the specific installation cell body be opened in it is close
Envelope chipware 4 is met on stream end 41, and the inner-diameter end of wing plate 45 is installed by sealing the cell body on chipware 4 with sealing chipware 4 inlay card.This
The structure of the inlay card assembling of sample, on the one hand ensure that the convenience of the assembling of the structure, it also avoid welding or be threadedly coupled can
Failure, on the other hand also ensure that the maintainability performance inside the joint caused by energy.Particularly fitted seal chipware 4 meets stream
End 41 and the thread connecting mode at back of the body stream end 42, by the assembling structure, can greatly improve the efficiency of assembling of room splashproof joint,
And maintenance is caused to become easy.
In another embodiment, the inner end diameter face towards kelly bar connection end of sealing seat ring 5 is a taper
Face, sealing seat ring 5 pass through the taper surface and the sealing fitted seal of chipware 4.The taper surface of sealing seat ring 5 is designed to ensure in it
Better seal is carried out between anchor ring and sealing chipware 4, also achieves the water conservancy diversion of fluid to avoid erosion.
In the specific design for sealing seat ring 5, the end set towards kelly bar connection end of sealing seat ring 5 has the second alloy
Ring 51, as depicted in figs. 1 and 2.Because the end face of the sealing seat ring 5 is inevitable erosion surface, the second alloy hoop 51 uses
Anti-erosion material is made, to improve the reliability for sealing seat ring 5.Specific second alloy hoop 51 is assemblied in using hot assembly mode
Seal the end of seat ring 5.The aperture surface of second alloy hoop 51 forms whole taper as a part for the sealing taper surface of seat ring 5
Face.
Structure when the splashproof joint is closed is as shown in figure 1, structure is as shown in Figure 2 after opening.
When joint is opened, in mud flow direction, the first alloy hoop 43, the second alloy hoop 51 are positioned at connecting or relative
Position so that there is good impact resistance in the both sides for the slurry channel that sealing seat ring 5 and back of the body stream end 42 are formed.
In the specific design of the present embodiment, after the joint is opened, sealing seat ring 5 and the back of the body flow the cavity that end 42 is formed
Area, sealing chipware 4 and body 1 between ring cavity 6 area it is consistent, also with seal seat ring 5 pipeline area it is consistent, the design
Purpose is to reduce the change of rate of flow of fluid, and preventing from damming to form high-velocity fluid device is caused excessively to wash away.
On the basis of above-mentioned embodiment, also to the assembly method of sealing seat ring 5 and body 1 in another embodiment
It is described further.As depicted in figs. 1 and 2, sealing seat ring 5 has the section for being used for sheathed spring, and compression spring 53 is set in close
On envelope seat ring 5 and spacing by sealing the step on seat ring, sealing seat ring 5 is assemblied in body 1, sealing seat ring 5 both ends
Internal diameter is consistent with the internal diameter of body 1, seals and forms the space for assembling compression spring 53 between seat ring 5 and body 1, and the space leads to
Insulated at two above and below overcompression spring 53 between the seal 52 of position and the inner chamber of body 1.Have in body 1
2 steps, a step are used for the installation of compression spring 53, and another step is used to seal the spacing of the stroke of seat ring 5, such as Fig. 1
Shown in Fig. 2.
Based on the assembly method of sealing seat ring 5, gas is offered on the wall of the position of body 1 where the assembly space of compression spring 53
Hole 54, as depicted in figs. 1 and 2, to ensure the air-flow of the place cavity of compression spring 53 in the reciprocatory movement of seat ring 5 is sealed
It is unimpeded.
The drilling mud splashproof joint of the present invention is skillfully constructed, is rational in infrastructure reliable, by elastic component provide elastic force and
Seat ring will be sealed and be placed in the sealing for sealing and joint being realized between chipware and body, when sealing seat ring by Fluid pressure with sealing chipware
Separate and realize the opening of joint, rational structure design make it that its operating is reliable, can effectively solve now current order
During root drilling rod the problem of caused mud leakage so that mud will not be leaked on rig floor, and operating mode has obtained effectively
Improve, the working environment of drill-well operation worker has very big lifting compared to before, while decreases unnecessary mud and waste.
In actual experiment, the body external diameter of design is 165mm, and it is 1.78mpa that joint, which opens pressure, the joint table in testing at the scene
Reveal good sealability and reliability, and there is the advantages of simple to operate, there is good using effect.
The invention is not limited in foregoing embodiment.The present invention, which expands to, any in this manual to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.