CN102182416A - Multifunctional high-pressure milling cone - Google Patents
Multifunctional high-pressure milling cone Download PDFInfo
- Publication number
- CN102182416A CN102182416A CN2011100850801A CN201110085080A CN102182416A CN 102182416 A CN102182416 A CN 102182416A CN 2011100850801 A CN2011100850801 A CN 2011100850801A CN 201110085080 A CN201110085080 A CN 201110085080A CN 102182416 A CN102182416 A CN 102182416A
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- milling cone
- pressure
- conehead
- milling
- hole
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Abstract
The invention relates to a multifunctional high-pressure milling cone, which comprises a milling cone body and a milling cone head, wherein a circulating hole is formed in the milling cone head. The multifunctional high-pressure milling cone is characterized in that the milling cone body is connected with the milling cone head by a buckle coated by a metal-to-metal adhesive; a ball seat and a steel ball which are used for seat sealing the circulating hole are arranged inside the milling cone head; the ball seat is fixed inside the milling cone head through shearing dowels; and an abrasive blasting hole and a stabilizing seat hanging hole which is communicated with a pressure transmitting pipe are respectively arranged in the milling cone head. The multifunctional high-pressure milling cone has the advantages that the switch between the high-pressure abrasive blasting hole (or the stabilizing seat hanging hole) and a general circulating hole is ingeniously realized, so that the high-speed jet during high-pressure abrasive blasting and jetting and the pressure stability in the process of pressure holding and heat hanging can be ensured, the efficiency and the safety of windowing sidetrack drilling operation are improved; the operation process is simplified; and the labor intensity of operators is reduced and the operation cost is reduced. The milling cone has structural design and favorable wear resistance.
Description
Technical field
The invention belongs to oil, gas drilling technical field, particularly a kind of multifunctional high pressure that is used for multilateral well that relates to mills awl.
Background technology
Large-scale development along with oil gas field, there are a large amount of new wells or old well to need window sidetracking to improve output, the Multilateral Wells technology is by getting out several wells in a well, the multilateral well drilling technology has lot of advantages: increase length, the expansion drainage area of well in oil reservoir, improve oil well output, reduce the oil reservoir development cost.
The normal formula of using of at present external window sidetracking is milled awl, and this formula is milled awl to be needed to bore emitter edge under the limit in going down process, and needs shutoff understratum in advance, has increased activity duration and operating cost.And domestic window sidetracking does not have a ripe formula to mill awl as yet, after window sidetracking finishes, often mills by cover and cutting or gunpowder perforation are linked up main borehole and branch well hole, but maloperation usually occurs, causes the operation failure; Because the perforate degree of depth in oil, gas field, need to adopt two cover instruments to carry out perforate, not only expend the plenty of time, increase oil, gas field working strength of workers and operating cost, and complex process is loaded down with trivial details, milling service behaviour and efficient still can't satisfy the production demand so window, and therefore successful case are not arranged at home, and foreign technology is relatively still immature.
Summary of the invention
The present invention for solve the technical problem that exists in the known technology provide a kind of reasonable in design, easy to operate, high efficiency, high security and cheaply multifunctional high pressure mill awl.
The present invention not only makes instrument have the function of windowing by milling the different designs of conehead internal construction, also has the function that high pressure abrasive perforating and voltage stabilizing seat are hung simultaneously.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: multifunctional high pressure mills awl, comprise and mill cone and mill conehead, described milling is shaped on circulation port in the conehead, it is characterized in that: describedly mill cone and mill conehead and connect by scribbling linking of metal-to-metal adhesive, be provided with a ball seat and a steel ball that is used for seat envelope circulation port milling conehead inside, described ball seat is fixed on by shear pin and mills conehead inside.
The present invention can also adopt following technical scheme:
Described milling also is provided with voltage stabilizing seat hanging hole in the conehead, be connected with pressure tube at voltage stabilizing seat hanging hole port.
Described milling also is provided with the sandblast hole in the conehead.
Advantage and good effect that the present invention has are: because the present invention adopts technique scheme, not only make by the different designs of milling the conehead internal construction and to mill awl and have the function of windowing, but also have the function that high pressure abrasive perforating and voltage stabilizing seat are hung.In addition, owing in milling conehead, be provided with ball seat with the circulation canal diverse location, realized the switching between high pressure sandblast hole (or voltage stabilizing seat hanging hole) and the ordinary cycle hole cleverly, the stability of pressure in the high-speed jet when so not only having guaranteed the high pressure abrasive perforating and the extension process that builds the pressure, window sidetracking operating efficiency and safety have been increased substantially, the technology that simplifies the operation, but also can alleviate the operating personnel labour intensity, reduce operating cost.Originally mill that wimble structure is reasonable in design, abrasion resistance good.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the structural representation of the embodiment of the invention 2;
Fig. 4 is the right view of Fig. 3.
Among the figure: 1, mill cone; 2, mill conehead; 3, ball seat; 4, steel ball; 5, shear pin; 6, pressure tube; 7, circulation port; 8, voltage stabilizing seat hanging hole; 9, sandblast hole.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
The circulation port and the voltage stabilizing seat hanging hole that mill in the conehead are isolated with shearing ball seat and steel ball.Being lowered to and locating in the integral type window sidetracking instrument process by the MWD circulation, set up circulation canal by the circulation port 7 that mills on the conehead 2, guarantee to be lowered to the loop test of in drilling tool, irritating liquid and MWD instrument in the process.After the orientation, inclined-plane of window sidetracking instrument is reserved,, realize separating of circulation port 7 and voltage stabilizing seat hanging hole 8, by pressure transmission pipeline 6 pressure is reached anchor mechanism then, realize that the voltage stabilizing seat hangs by throwing steel ball 4 with the circulation canal shutoff.Behind the seat prolong knot bundle, continue to increase pump pressure shear pin 5 is sheared, ball seat 3 is moved down, realize drilling tool inside and annular space conducting once more, carry out windowing task.
After branch well hole well cementation finishes, be lowered to the special high-pressure of linking up main borehole and mill awl, arrive desired depth and will mill awl adjust the orientation after, in drilling tool, squeeze into mulling mud and carry out the operation of high speed abrasive perforating.Because sandblast hole 9 diameters are less, and the circulation port 7 that mills in the conehead 2 can be sheared ball seat 3 shutoff, mill a branch of high speed of the inside and outside formation of awl and take the sand flow body, rapidly sleeve pipe one side is penetrated and wear,, behind the hole of sleeve pipe one side formation certain width and length, stop to add sand by slow movable drilling tool about reaching up and down, dropping into steel ball 4 cuts off shear pin 5, ball seat 3 is moved down, open circulation port 7, carry out the milling windowing task.
Claims (3)
1. a multifunctional high pressure mills awl, comprise and mill cone and mill conehead, described milling is shaped on circulation port in the conehead, it is characterized in that: describedly mill cone and mill conehead and connect by scribbling linking of metal-to-metal adhesive, be provided with a ball seat and a steel ball that is used for seat envelope circulation port milling conehead inside, described ball seat is fixed on by shear pin and mills conehead inside.
2. multifunctional high pressure according to claim 1 mills awl, it is characterized in that: described milling also is provided with voltage stabilizing seat hanging hole in the conehead, be connected with pressure tube at voltage stabilizing seat hanging hole port.
3. multifunctional high pressure according to claim 1 mills awl, it is characterized in that: described milling also is provided with the sandblast hole in the conehead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100850801A CN102182416A (en) | 2011-04-06 | 2011-04-06 | Multifunctional high-pressure milling cone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100850801A CN102182416A (en) | 2011-04-06 | 2011-04-06 | Multifunctional high-pressure milling cone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102182416A true CN102182416A (en) | 2011-09-14 |
Family
ID=44568694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100850801A Pending CN102182416A (en) | 2011-04-06 | 2011-04-06 | Multifunctional high-pressure milling cone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102182416A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2464929Y (en) * | 2000-10-24 | 2001-12-12 | 刘学志 | Adjustable sand-jetting hole-patching hole controller |
| CN2679348Y (en) * | 2004-03-01 | 2005-02-16 | 辽河石油勘探局 | Integrated tool for milling window in casing for side track drilling |
| CN201232532Y (en) * | 2008-07-04 | 2009-05-06 | 中国石油化工股份有限公司江苏油田分公司石油工程技术研究院 | Hydraulic combination window opening tool |
| CN201428406Y (en) * | 2009-04-24 | 2010-03-24 | 东营北方石油装备有限公司 | Pilot mill tap tool for repairing casings |
| CN202031514U (en) * | 2011-04-06 | 2011-11-09 | 中国海洋石油总公司 | Multifunctional and high-pressure milling cone |
-
2011
- 2011-04-06 CN CN2011100850801A patent/CN102182416A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2464929Y (en) * | 2000-10-24 | 2001-12-12 | 刘学志 | Adjustable sand-jetting hole-patching hole controller |
| CN2679348Y (en) * | 2004-03-01 | 2005-02-16 | 辽河石油勘探局 | Integrated tool for milling window in casing for side track drilling |
| CN201232532Y (en) * | 2008-07-04 | 2009-05-06 | 中国石油化工股份有限公司江苏油田分公司石油工程技术研究院 | Hydraulic combination window opening tool |
| CN201428406Y (en) * | 2009-04-24 | 2010-03-24 | 东营北方石油装备有限公司 | Pilot mill tap tool for repairing casings |
| CN202031514U (en) * | 2011-04-06 | 2011-11-09 | 中国海洋石油总公司 | Multifunctional and high-pressure milling cone |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110914 |