CN1053850C

CN1053850C - Anbohrarmatur

Info

Publication number: CN1053850C
Application number: CN95102160A
Authority: CN
Inventors: W·西希勒; N·弗赖德尔
Original assignee: Friatec AG
Current assignee: Friatec AG
Priority date: 1994-02-23
Filing date: 1995-02-20
Publication date: 2000-06-28
Anticipated expiration: 2015-02-20
Also published as: CN1112040A; DE4405798A1; DE4405798C2

Abstract

The fitting is connectable to a pipe and comprises a socket (4), into which can be inserted a drill. It also has a transverse socket branch (16) opening into the drill guiding socket. In the latter is located a rotary valve plug (24) with a through bore (26). The transverse socket branch comprises an actuator for rotation of the valve plug. When the latter coincides with the socket axis (20), the drill can pass through it.

Description

Downhole equipment

The present invention relates to a kind of downhole equipment that can be connected with pipe.

By known this class downhole equipment of DE 3830395 C1, it is designed to saddle, at the inner surface of first half shell the heating helix that is connected usefulness with outer tube surface is arranged.By welding,, be implemented in fixing on the outer tube surface by second half shell and suitable connector.The adapter vertical with pipe is used for fixing a drilling machine, and drilling machine has a drill bit that is used for pipe boring.After the boring, drill bit is travelling backwards in adapter, so that open the path that medium removes tube connector joint and the arm that is attached thereto.Afterwards, with embolism or cover blanked-off nozzle, medium just can flow into the arm that is connected above it through the tube connector joint from side direction and go.The tube connector joint one with the plane of taking over axis normal in, or be parallel to the pipe longitudinal axis.Here must be provided with additional locking device, after boring, especially after from take over, taking drilling machine away, from the pipe that pressure is arranged usually, flow out to avoid medium.So processing and assembly fee are quite high.

Therefore, the objective of the invention is to improve the downhole equipment of the above-mentioned type, so that can under situation simple in structure, implement the boring of pipe with job security highly and reliability.Operation before the boring, after when boring and the boring should be simplified, and can not need expensive supplementary means.Downhole equipment should have compactness and the structure of reliable operation, and can not have difficulty and be connected with arm apace.

According to the present invention, above-mentioned purpose reaches like this, this downhole equipment that can be connected with pipe has an adapter and a laterally adapter, can insert a drill bit in the adapter, the horizontal adapter with adapter noted earlier communicates, and it is characterized by: the rotatable valve body that a band through hole is housed in the adapter; Be provided for the horizontal adapter of manipulate tools, utilize this manipulate tools valve body can be rotated around its rotation; According to selection, block the stream of adapter, or by this stream of via-hole opening; And, if through hole and adapter axial alignment, but the drill bit via through holes passes.

The downhole equipment of being advised is characterized in rotatable valve body is combined in the adapter, forms a kind of structure of reliable operation.In valve body, establish one in the adapter of location and laterally take over, the manipulate tools of the valve body that is used to pack into.The downhole equipment low cost of manufacture of being advised, this is because there is not all-in-one-piece drill bit.Here be to be combined in " disposable valve " in the adapter to close one with combining of downhole equipment be not the boring that does not have leak rate.This downhole equipment mainly designs and is used to contain pressure stage PN10 in interior pressure limit.This downhole equipment has the compact appearance size, and can noly be assembled into to make difficultly and take over axis basically at horizontal level, therefore, can make the shoveling amount very little.

Valve body as rotary body can be designed to spheroid, and it has a through hole, and the axis of this through hole is aimed at the adapter longitudinal axis.In this position, can pass valve body with the drill bit of taking over a drilling machine that is connected, so that then on pipe, hole.The cross-sectional area of through hole is the circulation area of flow media in the pipeline preferably, and/or much smaller than the inner surface of the pipe that will hole.After taking out drill bit in boring and from valve hole, with about 90 ° of a manipulate tools rotary valve, with turn-off take in back to the part of pipe, so, can remove drilling machine and arm of connection on this takes over.Afterwards, by rotary valve its through hole is aimed at again with the adapter longitudinal axis.Remove manipulate tools from horizontal adapter after, an available cover or analog seal this horizontal adapter.So be combined in the valve body in the adapter, just in boring with use once during connecting branch subsequently, in addition it does not play other valve effect.In order to be connected in short-term with manipulate tools, a groove is preferably arranged on the valve body, it is tetragonal or other similar forms, the counterpart of manipulate tools can insert in this groove.

Especially the valve body that is designed to spheroid is injected in the accessory together with a same procedure when making this accessory.The shell of accessory is preferably made by injectable plastics, and its shrinkage character and the shrinkage character of valve body are coordinated mutually during the cooling of injection back.Proved already, shell or take over the contraction of the contraction of material preferably greater than valve body material, however should coordinate so each other, have sealing effectiveness after making the valve body cooling, but can need be with excessive power manipulation or around its rotating shaft rotation by desired mode.The thermal coefficient of expansion of shell cans be compared to the big predetermined amount of thermal coefficient of expansion of valve body most.

Other improvement and unique design provide in the dependent claims with in the following explanation.

The embodiment of the uniqueness of representing by means of accompanying drawing further illustrates the present invention below.Wherein:

Fig. 1 downhole equipment section;

The downhole equipment section of Fig. 2 to 4 explanation assembling process.

Fig. 1 represents to be designed to the downhole equipment of saddle, and it has first half shell 2 and an adapter that fuses with it 4.On the inner surface 6 of half shell 2, be provided with heating helix 8.The securing member 12 that utilizes one second half shell 10 and be designed to screw here, enforcement is fixed on downhole equipment on the outer tube surface that does not have further expression among the figure in the known manner, and pipe is coaxial perpendicular to the longitudinal axis 14 of the longitudinal axis of figure paper plane and downhole equipment basically.By to heating helix 8 input currents, just can downhole equipment be welded on the outer surface of above-mentioned pipe in known manner.

Establish one and laterally take over 16 in adapter 4, its axis 18 is substantially perpendicular to takes over axis 20.Laterally take over 16 the insides and establish a sealing ring 22,23 at least.Another kind of alternative mode also can within the scope of the invention one or several sealing ring be contained on the manipulate tools, and manipulate tools is inserted horizontal adapter together therewith.One can be passed horizontal adapter around the manipulate tools of axis 18 rotations, at this moment, utilizes these two sealing rings 22,23 to realize sealing.Laterally taking over 16 is not to be used for connecting an arm, and just is used for handling, and promptly carries out the rotation of valve body 24.

Here, valve body 24 is designed to the spheroid with through hole 26, but this valve body also can have another kind of rotational symmetric exterior contour within the scope of the invention, for example is an ellipsoid.The diameter of through hole should be harmonious with the bit diameter of downhole equipment by the present invention.The diameter of through hole equals bit diameter at least, cans be compared to the big predetermined amount of bit diameter most.The cross-sectional area of through hole 26 is more much smaller than the cross-sectional area of the pipe of MEDIA FLOW warp.Importantly valve body 24 rotates like this around axis 18, promptly can open or turn-off the flow channel of adapter 4 by through hole 26 according to its position of rotation.Except that through hole 26, the axis 18 that valve body 24 is designed to respect to its rotation or laterally adapter is rotational symmetric.

Valve body 24 has one in the face of horizontal 16 the Connection Element 28 of taking over, and shown in accompanying drawing, it is designed to a groove.Medium between through hole 26 and Connection Element 28 or groove, next door 30 arranged, so except a small amount of leakage rate was arranged, can not or be taken over 4 from above-mentioned pipe and arrive the laterally adapter 16.By sealing ring 22,23 can when boring with high reliability avoid medium do not allow spill because sealing ring can be done further sealing with respect to manipulate tools in suitable mode.Manipulate tools has a coupling part that matches with Connection Element 28, and in the illustrated embodiment, it is one and is designed to and the corresponding embolism of groove.

Valve body 24 is contained in the thickened area of adapter 4, in this zone, and the twice that the wall thickness 32 of adapter 4 equals to take over 4 free end wall thickness 34 at least.

When making downhole equipment, valve body 24 combinations are entered.Make and preferably to adopt pressure injection to penetrate technology, half shell 2, take over 4 and laterally take over 16 and in a suitable injection molding, be made into all-in-one-piece plastic mould simultaneously, especially polyethylene molding spare.Before the injection valve body 24 is inserted injection molding.Fix and locate with inserting plug in valve body 24 through holes, in addition, when injection, this plug also is used for formation cavity in adapter 4.Acquire a special sense at a sealing lip 36 taking over 4 inboards, it is close to valve body 24 hermetically.This sealing lip 36 is preferably taken over the part of 4 integral body, and makes jointly with adapter when downhole equipment is injected.When being connected in the adapter 4 with arm after boring, this sealing lip keeps sealing reliably.Take over 4 free-ended outer surfaces 38 and be used to connect an arm, especially connect by means of an electrically welded tube joint.

After the connection of finishing arm and valve body 24 being rotated to the via positions of diagram, be sealed shut horizontal adapter 16 with a cover 40.Cover 40 the insides a heater coil 42 is arranged.There is the contact 44,45 of two input currents the outside of cover 40.After all assembly method is implemented, will cover 40 and be enclosed within the horizontal adapter 16, and in heater coil 42, pass to electric current, will cover 40 sealings and couple together with horizontal adapter securely, thereby stop medium to flow out enduringly from horizontal adapter 16 with the functional reliability of height.Also can adopt an embolism that can insert horizontal adapter 16 the insides to replace covering 40, on the outer surface of embolism, be provided with heater coil by another kind of scheme.

With Fig. 2 to 4 explanation assembling process.Press Fig. 2, drilling machine 46 links to each other with adapter 4, and drilling machine 46 has a drill bit 48.In advance utilize second half shell 10 and screw 12 to be contained on the outer surface of pipe 50 saddle, and feed electric current, make the sealing of saddle and outer tube surface and couple together securely by above-mentioned heating helix.Drill bit 48 passes the through hole 26 of valve body 24, and drills through tube wall as shown in the figure.As shown in arrow 52, pipe is subjected to the pressure effect of flow media.

Press Fig. 3, drill bit 48 is withdrawn again by means of drilling machine 46, can insert this paper by horizontal adapter 16 and begin the manipulate tools mentioned, and it is connected with valve body 24.Make valve body 24 around axis 18 cardinal principle half-twist angles now.

Valve closing when valve body 24 is in position shown in Figure 4, can take off drilling machine 46 this moment from taking over 4.Being in medium under the pressure in 50 at pipe obviously can not arrive and take over 4 free end.Medium then, connects an arm on 4 taking over, so when valve body 24 is opened flow channel once more during the half-twist angle, just can be flowed through by through hole 26 from pipe 50 and be taken over 4 and arrive and be connected the arm of taking on 4.By above-mentioned cover is welded in the horizontal adapter 16, thus can reliable operation and avoid the unallowed outflow of medium enduringly.

Claims

1. the downhole equipment that can be connected with pipe has an adapter and a laterally adapter, can insert a drill bit in the adapter, laterally takes over adapter noted earlier to communicate, and it is characterized by: take over the rotatable valve body (24) that a band through hole (26) is housed in (4); Be provided with the horizontal adapter (16) that manipulate tools is used, utilize this manipulate tools promptly selectively to turn-off the stream of taking over (4), or to open stream with valve body (24) around its rotation (18) rotation like this by through hole (26); And work as through hole (26) and take over axis (20) on time, drill bit can pass hole (26).

2. according to the described downhole equipment of claim 1, it is characterized by: can be in valve body (24) the injection hole accessory of its rotation (18) rotation; And/or take over (4), laterally take over (16) and half shell (2) and make an integral body and/or in a common injection technique, make.

3. according to claim 1 or 2 described downhole equipments, it is characterized by: the material of valve body (24) should be coordinated mutually with the shrinkage character of taking over the material of (4) at least, promptly, in the cooling stage after injection, the material of taking over is contracted on the valve body (24) like this, make the cooling back obtain sealing reliably on the one hand, make valve body (24) still be enough to rotate on the other hand around its rotation (18).

4. according to the described downhole equipment of one of claim 1 to 3, it is characterized by: in taking over (4), the top that is preferably in adapter (4) is provided with a sealing lip (36), and this sealing lip (36) is close to valve body (24) hermetically, and/or when injection this sealing lip and downhole equipment make one.

5. according to the described downhole equipment of one of claim 1 to 4, it is characterized by: valve body (24) has a Connection Element (28), this element is corresponding with the coupling part of manipulate tools, and manipulate tools can be inserted and mesh with valve body (24) by laterally taking over (16).

6. according to the described downhole equipment of one of claim 1 to 5, it is characterized by: the inside of laterally taking over (16) is provided with a sealing ring (22,23) at least, and after manipulate tools was inserted, sealing ring closely was enclosed within on the manipulate tools.

7. according to the described downhole equipment of one of claim 1 to 6, it is characterized by: take over (4) and take over the big predetermined multiple of (4) free-ended wall thickness (34) at wall thickness (32) ratio of the location of valve body (24), this multiple is at least 2.

8. according to the described downhole equipment of one of claim 1 to 7, it is characterized by: laterally take over (16) the most handy covers (40) or an embolism and close hermetically; And/or this cover (40) or embolism preferably have heater coil (42), is used for and laterally takes over (16) welding.