CN104314484A - Circulating drilling fluid auxiliary pressurizer for multilateral well sidetracking - Google Patents
Circulating drilling fluid auxiliary pressurizer for multilateral well sidetracking Download PDFInfo
- Publication number
- CN104314484A CN104314484A CN201410618002.7A CN201410618002A CN104314484A CN 104314484 A CN104314484 A CN 104314484A CN 201410618002 A CN201410618002 A CN 201410618002A CN 104314484 A CN104314484 A CN 104314484A
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- CN
- China
- Prior art keywords
- swiveling wheel
- drilling fluid
- drill
- sidetracking
- pressurizer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
Abstract
The invention relates to a circulating drilling fluid auxiliary pressurizer for multilateral well sidetracking. Under the condition that a drill column does not rotate, kinetic energy generated during drilling fluid circulating can be converted to drill pressure, therefore, the problem that drill pressure is difficult to effectively exert on a drill head due to large frictional resistance and the like during multilateral well sidetracking by an underground dynamic drilling tool can be solved, the well drilling efficiency is increased, the difficulty of multilateral well sidetracking is lowered, the possibility of buckling of the drill column can be reduced, and safe, efficient and smooth drilling process can be guaranteed.
Description
Technical field
Patent of the present invention belongs to petroleum works field, particularly, relates to a kind of sidetracking Multilateral Wells circulating fluid auxiliary pressurized device.
Background technology
In the process of current sidetracking Multilateral Wells, generally adopt mud motor to carry out drillng operation, the method is that the power of rotary drill bit is moved on to down-hole by ground, is directly added on drill bit, and power is provided by VDD-to-VSS face high pressure slurry pump; During drilling well, drill string non rotating, the function of drill string just applies certain the pressure of the drill to drill bit, forms well-flushing path and the reaction torque of bearing mud motor shell.But under certain conditions, it is comparatively large that this method also exists frictional resistance, and the pressure of the drill effectively cannot be applied to the phenomenon of drill bit.The method that the method that present stage adopts mainly installs inverted drill string additional applies the pressure of the drill to drill bit, is placed in the straight well section on top or little Wells section, utilizes the gravitational force urges drill bit of drill string to creep into by a part of drill collar.But along with hole angle increases, the gravity direction of drill string is tending towards vertical gradually with drilling direction on the one hand, and the frictional resistance on the other hand between drill string and the borehole wall increases considerably, and makes the pressure of the drill to be effectively applied on drill bit.Meanwhile, there is very large drawback in this mode, namely under the acting in conjunction of top tubing string gravity and bottom frictional resistance, middle a part of tubing string is made to produce Helical Buckling, this not only causes difficulty to hole trajectory control, and easily causes down-hole accident, affects drilling efficiency.
It should be noted that due in the process using mud motor, drill string non rotating, this is also for the applying of the pressure of the drill brings difficulty simultaneously; Now, the kinetic energy produced when unique utilizable energy source is exactly circulation of drilling fluid.
Therefore, be necessary to develop a kind of sidetracking Multilateral Wells circulating fluid auxiliary pressurized device.By this pressurizer, the kinetic transformation that circulation of drilling fluid can be relied on to produce is the pressure of the drill needed badly, can improve drilling efficiency like this, reduces the difficulty of horizontal well sidetracking, and reduce drill string and produce the possibility of flexing, can ensure drilling process safe, efficient, carry out smoothly.
Summary of the invention
For overcoming existing technological deficiency, patent of the present invention provides a kind of in Multilateral Wells sidetracking process, non rotating drill string and rely on the auxiliary pressurized device of circulating fluid kinetic energy, to improve drilling efficiency, reduce the difficulty of horizontal well sidetracking, and reduce the possibility that drill string produces flexing.
To achieve these goals, the technical scheme of patent employing of the present invention is as follows:
Sidetracking Multilateral Wells circulating fluid auxiliary pressurized device, comprising: positioning and locking ring 1, pressurizer body 2, swiveling wheel grab wall pawl 3, swiveling wheel body 4, swiveling wheel drilling fluid access 5, two bowl-shape bucket blade 6, swiveling wheel rotating shaft 7, mozzle 8, mozzle fastening devices 9, lock bolt 10.Pressurizer integrally can coordinate with drill string 11 and realizes sidetracking Multilateral Wells and apply the pressure of the drill function.
Positioning and locking ring 1, can match with lock bolt 10 is fixed on pressurizer body 2 on a certain section of drill string 11, they is formed a whole, so that the enforcement of follow-up pressurization function.
Pressurizer body 2 is main elements of this pressurizer, comprises swiveling wheel and grabs wall pawl 3, swiveling wheel body 4, swiveling wheel drilling fluid access 5, two bowl-shape bucket blade 6, swiveling wheel rotating shaft 7, mozzle 8, mozzle fastening devices 9; Swiveling wheel body 4, is arranged on by swiveling wheel rotating shaft 7 in the arc-shaped slot of pressurizer body 2.
Swiveling wheel grabs wall pawl 3, under the drive of swiveling wheel body 4, three effects as described below can be played: the first, the scraping borehole wall (barefoot laterally drilling) or casing wall (casing window sidetracking), produce along the prone axial force of wall, to play the effect applying the pressure of the drill; Specifically, after pressurizer body 2 and drill string 11 install, this direction of grabbing wall pawl is bending towards drill string box direction, like this from pressurizer body 2 outside, under the impact of drilling fluid, swiveling wheel body 4 rotates towards drill string box direction, swiveling wheel grab wall pawl 3 pointed portion first with wall contact friction, the scraping borehole wall (barefoot laterally drilling) can be played or casing wall (casing window sidetracking) is to provide the function of the pressure of the drill; And time in this pressurizer is with drill string 11 lower going-into-well eye, first the back arc surface that swiveling wheel grabs wall pawl 3 contacts with wall, the scraping effect with wall can be reduced, so this pressurizer enters under not affecting drill string; The second, swiveling wheel body 4 can be regarded as the wheel of rolling wheel centralizer, fashionable under drill string, the effect of auxiliary righting drag reduction can be played, reduce the possibility of drill string generation flexing; 3rd, in the outer circumference of swiveling wheel body 4, swiveling wheel is grabbed wall pawl 3 and is alternately arranged with swiveling wheel drilling fluid access 5, when the high speed liquid flow impact swiveling wheel flowed into via mozzle 8 grabs wall pawl 3, also can play the function accelerated swiveling wheel body 4 and rotate.
Swiveling wheel body 4, is arranged on by swiveling wheel rotating shaft 7 in the arc-shaped slot of pressurizer body 2.Under the impact of drilling fluid, rotate from pressurizer body 2 outside along drill string box direction, the effect can grabbing wall pawl 3 by swiveling wheel plays scraping wall to provide the function of the pressure of the drill.Meanwhile, swiveling wheel body 4 can be regarded as the wheel of rolling wheel centralizer, fashionable under drill string, the effect of auxiliary righting drag reduction can be played.In design, the first, the both sides of swiveling wheel body 4 adopt Seal Design, only have swiveling wheel drilling fluid access 5 to come in and go out for drilling fluid, can reduce like this drilling fluid enter swiveling wheel body 4 after kinetic energy dissipation; Second, the top of this pressurizer and bottom respectively arrange four swiveling wheels, two groups totally eight altogether, 40 ° ~ 50 ° angles and the distributing position of two groups of swiveling wheels is staggered, so both can ensure that the drilling fluid that flow velocity reduces by swiveling wheel in bottom can not run into larger resistance on top, pass through smoothly; Also bottom can be made not pass through swiveling wheel by the drilling fluid of swiveling wheel on top.The kinetic transformation that the acting in conjunction of these two kinds designs can make full use of drilling fluid is the pressure of the drill.
Swiveling wheel drilling fluid access 5, can enter swiveling wheel body 4 when annular circulation by mozzle 8 for drilling fluid, impacts two bowl-shape bucket blade 6, thus drives the rotation of whole swiveling wheel body 4.
Two bowl-shape bucket blade 6, from pressurizer body 2 outside, under the percussion of drilling fluid, two bowl-shape bucket blade 6 drives whole swiveling wheel body 4 to rotate towards drill string box direction.
Swiveling wheel rotating shaft 7, provides the rotating shaft of two bowl-shape bucket blade 6.
Mozzle 8, guided drilling liquid is sprayed by front nozzle, impacts two bowl-shape bucket blade 6, impels swiveling wheel body 4 to rotate.Mozzle 8 one-tenth is horn-like, and fluid enters mozzle from big opening end, from the ejection at a high speed of osculum end, can realize the object of the two bowl-shape bucket blade 6 of acceleration shock.
Mozzle fastening devices 9, for supporting fixed diversion pipe 8.
Lock bolt 10, is fixed on drill string for matching with positioning and locking ring 1 by pressurizer body 2.
Relative to prior art, the beneficial effect of patent of the present invention is as follows:
1. this pressurizer can use in the non-rotary underground work of drill string.
2. this pressurizer directly can be sleeved on drill string in the well section needed, and can dismantle at any time, and thus without the need to carrying out any transformation to existing drill string, application is very flexible, convenient, simple, practical.
Accompanying drawing explanation
Fig. 1 is the front elevational schematic of sidetracking Multilateral Wells circulating fluid auxiliary pressurized device;
Fig. 2 is A-A generalized section in Fig. 1;
Fig. 3 is B-B generalized section in Fig. 1;
Fig. 4 is the partial schematic sectional view of C-C section in Fig. 1;
Fig. 5 is the schematic diagram used at horizontal segment after this pressurizer assembling drill string 11.
Detailed description of the invention
Below in conjunction with accompanying drawing, illustrate and be described in detail as follows detailed description of the invention, structure, feature and effect thereof that patent of the present invention proposes:
As shown in Figure 1, Figure 2, Figure 3, Figure 4, sidetracking Multilateral Wells circulating fluid auxiliary pressurized device, comprises successively: positioning and locking ring 1, pressurizer body 2, swiveling wheel grab wall pawl 3, swiveling wheel body 4, swiveling wheel drilling fluid access 5, two bowl-shape bucket blade 6, swiveling wheel rotating shaft 7, mozzle 8, mozzle fastening devices 9, lock bolt 10.
As shown in Figure 5, first needing the well section applying the pressure of the drill to be sleeved on the correct position of drill string 11 by this pressurizer body 2, be locked with positioning and locking ring 1 up and down.In the process of sidetracking Multilateral Wells, this section of drill string non rotating; In the process of circulation of drilling fluid, the drilling fluid with high kinetic energy impacts two bowl-shape bucket blade 6 via mozzle 8 by swiveling wheel drilling fluid access 5 in annular space, make to impact two bowl-shape bucket blade 6 to rotate around swiveling wheel rotating shaft 7, and drive all parts of whole swiveling wheel body 4 to rotate; And grab wall pawl 3 due to swiveling wheel to rotate in the lump, the frictional resistance that itself and wall friction produce can provide certain axial force for drill string, i.e. the pressure of the drill; Two groups the acting in conjunction of totally eight swiveling wheel bodies 4 to provide the pressure of the drill needed for sidetracking.
Top and the bottom of the pressurizer body 2 of this pressurizer shown in Fig. 1 respectively arrange four swiveling wheels, two groups totally eight altogether, 40 ° ~ 50 ° angles and the distributing position of two groups of swiveling wheels is staggered, so both can ensure that the drilling fluid that flow velocity reduces by swiveling wheel in bottom can not run into larger resistance on top, pass through smoothly; Also can make bottom not by the drilling fluid of swiveling wheel on top by swiveling wheel, the kinetic transformation that can make full use of drilling fluid is like this pressure of the drill.
Claims (6)
1. a sidetracking Multilateral Wells circulating fluid auxiliary pressurized device, is characterized in that; This pressurizer mainly comprises swiveling wheel and grabs wall pawl, swiveling wheel body, swiveling wheel drilling fluid access, two bowl-shape bucket blade, mozzle.
2. sidetracking Multilateral Wells circulating fluid auxiliary pressurized device according to claim 1, it is characterized in that: described swiveling wheel grabs wall pawl, from pressurizer body exterior, under the impact of drilling fluid, swiveling wheel body rotates towards drill string box direction, swiveling wheel grab wall pawl pointed portion first with borehole wall contact friction, the effect that the scraping borehole wall provides the pressure of the drill can be played.
3. sidetracking Multilateral Wells circulating fluid auxiliary pressurized device according to claim 1, be is characterized in that: described swiveling wheel body, is arranged in the arc-shaped slot of pressurizer body by swiveling wheel rotating shaft; Under the impact of drilling fluid, rotate from o exterior along drill string box direction, the scraping borehole wall (barefoot laterally drilling) is played in the effect can grabbing wall pawl by swiveling wheel or casing wall (casing window sidetracking) is to provide the function of the pressure of the drill; Meanwhile, swiveling wheel body can be regarded as the wheel of rolling wheel centralizer, fashionable under drill string, the effect of auxiliary righting drag reduction can be played, reduce the possibility of drill string generation flexing; In design, the first, the both sides of swiveling wheel body adopt Seal Design, only have swiveling wheel drilling fluid access to come in and go out for drilling fluid, can reduce like this drilling fluid enter swiveling wheel body after kinetic energy dissipation; The second, the top of this pressurizer and bottom respectively arrange four swiveling wheels, two groups totally eight altogether, 40 ° ~ 50 ° angles and the distributing position of two groups of swiveling wheels is staggered; The kinetic transformation that these two kinds design actings in conjunction can make full use of drilling fluid is the pressure of the drill.
4. sidetracking Multilateral Wells circulating fluid auxiliary pressurized device according to claim 1, it is characterized in that: described swiveling wheel drilling fluid access, swiveling wheel body can be entered for drilling fluid when annular circulation, impact two bowl-shape bucket blade, thus drive the rotation of whole swiveling wheel body.
5. sidetracking Multilateral Wells circulating fluid auxiliary pressurized device according to claim 1, is characterized in that: described two bowl-shape bucket blade, from o exterior, under the percussion of drilling fluid, drives whole swiveling wheel body to rotate towards drill string box direction.
6. sidetracking Multilateral Wells circulating fluid auxiliary pressurized device according to claim 1, is characterized in that: described mozzle is used for guided drilling liquid and is sprayed by front nozzle; Mozzle becomes horn-like, and fluid enters mozzle from big opening end, from the ejection at a high speed of osculum end, can realize the object of the two bowl-shape bucket blade of acceleration shock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410618002.7A CN104314484A (en) | 2014-11-06 | 2014-11-06 | Circulating drilling fluid auxiliary pressurizer for multilateral well sidetracking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410618002.7A CN104314484A (en) | 2014-11-06 | 2014-11-06 | Circulating drilling fluid auxiliary pressurizer for multilateral well sidetracking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104314484A true CN104314484A (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410618002.7A Pending CN104314484A (en) | 2014-11-06 | 2014-11-06 | Circulating drilling fluid auxiliary pressurizer for multilateral well sidetracking |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB453436A (en) * | 1934-03-06 | 1936-09-07 | Mueller Friedrich | Improvements in or relating to plants for deep boring |
| CN2793291Y (en) * | 2005-04-27 | 2006-07-05 | 大庆石油管理局 | Drilling oblique device for branched well |
| CN101787858A (en) * | 2010-03-04 | 2010-07-28 | 中国石油大学(华东) | Underground drill stem vibration damping and pressurizing device |
| CN201687391U (en) * | 2010-03-05 | 2010-12-29 | 中国石油大学(北京) | Underground water-hammer type pressure pulse generating tool |
| CN201991749U (en) * | 2010-10-18 | 2011-09-28 | 中国石油大学(华东) | Spiral fork type screw motor underground supercharger |
-
2014
- 2014-11-06 CN CN201410618002.7A patent/CN104314484A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB453436A (en) * | 1934-03-06 | 1936-09-07 | Mueller Friedrich | Improvements in or relating to plants for deep boring |
| CN2793291Y (en) * | 2005-04-27 | 2006-07-05 | 大庆石油管理局 | Drilling oblique device for branched well |
| CN101787858A (en) * | 2010-03-04 | 2010-07-28 | 中国石油大学(华东) | Underground drill stem vibration damping and pressurizing device |
| CN201687391U (en) * | 2010-03-05 | 2010-12-29 | 中国石油大学(北京) | Underground water-hammer type pressure pulse generating tool |
| CN201991749U (en) * | 2010-10-18 | 2011-09-28 | 中国石油大学(华东) | Spiral fork type screw motor underground supercharger |
Non-Patent Citations (2)
| Title |
|---|
| 汪福华等: "SL-160型液力加压器的研制及应用", 《石油矿场机械》 * |
| 沈忠厚等: "世界钻井技术新进展及发展趋势分析", 《中国石油大学学报(自然科学版)》 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| 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: 20150128 |