CN211397450U - Combined drilling tool structure for descending and drilling inclined well in series of five-section set direction - Google Patents
Combined drilling tool structure for descending and drilling inclined well in series of five-section set direction Download PDFInfo
- Publication number
- CN211397450U CN211397450U CN201922144617.1U CN201922144617U CN211397450U CN 211397450 U CN211397450 U CN 211397450U CN 201922144617 U CN201922144617 U CN 201922144617U CN 211397450 U CN211397450 U CN 211397450U
- Authority
- CN
- China
- Prior art keywords
- drilling
- well
- drill bit
- centralizer
- series
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a series of five sections are formulated to well declination drilling with combination drilling tool structure, connect upper portion drilling tool from up connecting gradually the constitution down including drill bit, do not have the curved screw rod drilling tool of right list (straight screw rod), no magnetic drill collar, jumbo size centralizer. The degree of the drilling tool without the right single-bent screw is controlled to be about 1 degree, and the maximum degree cannot exceed 1.25 degrees. The structure mainly makes full use of the function of gravity declination in composite drilling and the directional function of a single-bent (straight) screw drilling tool to realize the plane and space three-dimensional declination function in the drilling process.
Description
Technical Field
The utility model belongs to the technical field of the oil field drilling construction technique and specifically relates to a series of five sections are formulated to well fall inclined drilling and are used combination drilling tool structure.
Background
With the improvement of the technological requirements of oil extraction technology, the proportion of the well occupying the drilling construction well is obviously improved in five sections in recent two years, and the well track of the well, namely, five sections of straight-increasing-stabilizing-decreasing-stabilizing, is formulated in five sections. The five-section system is provided with the descending and stabilizing well sections which are mostly arranged at the lower well section, the descending amplitude of the descending well section is large, and the well is generally required to be inclined to 0 degree. And the later slope stabilizing section requires that the slope stabilizing requirement always keeps the well slope zero degree slope drilling completion.
The drilling tool structure that prior art adopted in the declivity of directional well and the construction of steady well section: the drilling tool comprises a drill bit, a single-bent screw rod, a directional joint, a non-magnetic drill collar and an upper drilling tool. The front section of the single-bent screw body is provided with an undersized straight centralizer. The existing upper drilling tool combined structure completely depends on the directional capability of a single-bent screw rod to carry out directional inclination-reducing construction during the inclination-reducing drilling construction of an inclination-reducing section. The directional declination drilling and the composite drilling are carried out alternately, so that the requirement of the descending slope of the well track is met. The construction means at the present stage has the following disadvantages. 1. The empirical trajectory is not smooth. 2. The inclination reducing section adopts a single-bend directional mode to reduce inclination, and the mechanical drilling speed is slow. 3. The five-section deviation-reducing well sections are well sections with deep well depth and high drilling fluid density, are serious in dragging and pressing during orientation, reduce the mechanical drilling speed by several times, and have unsatisfactory deviation-reducing effect due to the fact that the tool surface is difficult to control during the orientation construction. 4. When the drag pressure is serious and the PDC bit cannot be used for construction, the bit needs to be pulled out and replaced, and the drilling period is greatly prolonged.
The inclination measuring connector comprises a connector body and a valve core arranged in the connector body, wherein the valve core comprises a valve seat and a valve plate, the valve seat is hermetically arranged on the inner wall of an outer shell, one side of the valve plate is connected to the outlet end of the valve seat through a connecting piece, the valve plate is kept in a normally closed state through an elastic component, a plurality of centering guide blocks are arranged on the inner wall of the outlet end of the connector body, a cylindrical centering guide channel is formed among the centering guide blocks, the central line of the cylindrical centering guide channel is overlapped with the central line of a cylindrical channel formed by the inner wall of the outlet end of the valve seat, and the diameter of the cylindrical centering guide channel is equal to that of the cylindrical channel formed by the inner wall of the outlet end of the valve seat. The structure is reasonable and compact, and the device has the advantages of good erosion resistance, convenient use, large flow, reliable sealing and the like.
Application No.: 201621066137.8, filing date: 2016-09-20 discloses a drilling tool assembly suitable for orientation of a Fuling shale gas horizontal well, which comprises a PDC drill bit, a single-bending screw rod, a short drill collar and an undersize centralizer, wherein the upper part of the PDC drill bit is connected with the single-bending screw rod, the upper part of the single-bending screw rod is connected with the short drill collar, the upper part of the short drill collar is connected with the undersize centralizer, and the length of the short drill collar is adjustable. The method realizes the deflecting, the inclination stabilizing and the inclination reducing, can obviously reduce the tripping caused by the failure of track control, avoids the influence on the well drilling time effectiveness and the increase of the well drilling period caused by frequent directional deviation correction and drilling tool replacement. The adjustment of the increasing and decreasing amplitude of the well deviation is completed by adjusting the length of the short drill collar in the actual drilling, the method is very flexible and easy to operate, the problem that the well deviation is difficult to control during the large-inclination long and steady-deviation drilling of a large well bore can be solved, the friction torque is reduced, and the extending capability of the long horizontal section of the Fuling shale gas is improved.
Application No.: 201820470072.6 application date: 2018-03-30 discloses a drill string combination structure for alleviating directional pressure relief in five-section well making, which consists of a drill rod, a radial vibration resistance reducing tool, a drill rod, an axial vibration resistance reducing tool, a weighted drill rod, a measurement while drilling system, a screw drilling tool and a PDC drill bit from top to bottom. The drill string assembly can effectively reduce the directional pressure supporting of five sections of well making, and the directional pressure supporting is mainly relieved through the following two aspects of action: the radial vibration resistance reducing tool is placed above a declination point by 400m, and through generating radial vibration, the adhesion between a drill column from the directional radial vibration resistance reducing tool to a declination section and a well wall is relieved, and the pressure relief is relieved; the axial vibration resistance reduction tool is arranged at a position 300m away from the drill bit, and through generating axial vibration, the directional friction resistance from the position below the axial hydraulic oscillator to the drill bit section is reduced, and the directional pressure support is relieved.
Application No.: 201720791664.3, filing date: 2017-07-03 provides a flexible four-in-one drilling tool assembly which comprises a drill bit, a screw centralizer, a flexible short section, a spherical centralizer, a directional joint, a non-magnetic drill collar and a plurality of drill rods, wherein the drill bits, the screw centralizer, the flexible short section, the spherical centralizer, the directional joint, the non-magnetic drill collar and the drill rods are sequentially connected from bottom to top, and the outer diameter of the screw centralizer is larger than that of the spherical centralizer. The flexible short section has higher flexibility, is convenient for improving the sliding slope increasing rate and preventing the falling slope in the track control of the directional well, particularly combines and well controls the falling slope rate for the lower strongly-falling slope stratum, and ensures the rapid drilling and well body quality of the directional well. The reduction of the drill collar in the combination obviously reduces the friction resistance at the position close to the drill bit, enhances the sliding effect, reduces the low-efficiency sliding, integrates the characteristics of combination, obviously enhances the track control effect, greatly improves the sliding construction efficiency and greatly improves the drilling speed.
Application No.: 201520152887.6 application date: 2015-03-18 discloses a downhole power drill with a deflecting function for drilling horizontal wells and inclined wells, which solves the problems of low strength, large frictional resistance and short service life of the power drill. The technical scheme is as follows: the drilling tool is composed of a power part, a bending part and a bearing part, wherein the power part is driven by a screw motor, the motor transmits mechanical energy to a transmission shaft through a universal shaft, the bending part and the bearing part are unified to a shell part of the transmission shaft, the overall size of the drilling tool is shortened, the bending part is far away from a screw thread connecting part of the shell of the transmission shaft and the shell of the universal shaft, the pressure of the screw thread connecting part is reduced, and the angle of the bending part is 3 degrees. The utility model discloses satisfy directional well, horizontal well, branch well increase to one side, fall to one side, the steady needs of inclining, improve the reliability of drilling tool, extension drilling tool life.
Technical scheme and the technical problem that will solve and the beneficial effect who produces of above disclosure technique all with the utility model discloses inequality, to the utility model discloses more technical characteristics and the technical problem and the beneficial effect that will solve all do not have the technological inspiration in the above technical document that discloses.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a series of five sections system directional wells fall inclined drilling with combination drilling tool structure, adopted gravity to fall the mode of inclining. The inclination is reduced by directly adopting a turntable composite drilling mode. The 4-aspect defects mentioned above are effectively avoided. The serial descending combined drilling tool structure combination is divided into three combination modes, and the descending rate and the function of each combination are different. The inclination-reducing drilling tool combination mode matched with the underground condition can be adopted according to different well track design requirements, and the requirement of controlling the inclination reduction of the well track is met. And the method of controlling the bit pressure and the rotary table drilling speed can be used for micro-controlling the inclination reducing rate of the well in the inherent inclination reducing range, so as to meet the requirement of well track control.
In order to achieve the above object, the utility model discloses a following technical scheme, a series of five sections are formulated to well fall inclined drilling to use combination drilling tool structure, include:
the upper end of the drill bit is connected with the lower end of the screw rod;
the lower end of the screw is connected with the upper end of the drill bit;
the screw rod is a single-bent screw rod, the upper end of the single-bent screw rod is connected with the lower end of the inclinometer joint, and the upper end of the inclinometer joint is connected with the lower end of the non-magnetic drill collar.
Furthermore, the upper end of the non-magnetic drill collar is connected with a centralizer, the centralizer is a large-size centralizer, and the upper end of the large-size centralizer is connected with an upper drilling tool.
Further, the maximum outer diameter of the large-size centralizer is not less than 3mm of the maximum outer diameter of the drill bit.
Further, the drill bit is a PCD drill bit or a roller cone drill bit.
Further, the length of the non-magnetic drill collar is 8-9 meters.
Further, the bending inclination degree of the single-bending screw is about 1 degree, the maximum bending inclination degree cannot exceed 1.25 degrees, and the minimum bending inclination degree is not less than 0.75 degree.
In order to achieve the above object, the utility model discloses a following technical scheme, a series of five sections are formulated to well fall inclined drilling to use combination drilling tool structure, include:
the upper end of the drill bit is connected with the lower end of the screw rod;
the lower end of the screw is connected with the upper end of the drill bit;
the screw rod is a straight screw rod, the upper end of the straight screw rod is connected with the lower end of the inclinometer joint, and the upper end of the inclinometer joint is connected with the non-magnetic drill collar.
Furthermore, the upper end of the non-magnetic drill collar is connected with a centralizer, the centralizer is a large-size centralizer, and the upper end of the large-size centralizer is connected with an upper drilling tool.
Further, the maximum outer diameter of the large-size centralizer is not less than 3mm of the maximum outer diameter of the drill bit.
Further, the drill bit is a PCD drill bit or a roller cone drill bit.
Further, the length of the non-magnetic drill collar is 8-9 meters.
In order to achieve the above object, the utility model discloses a following technical scheme, a series of five sections are formulated to well fall inclined drilling to use combination drilling tool structure, include:
the upper end of the drill bit is connected with the lower end of the screw rod;
the lower end of the screw is connected with the upper end of the drill bit;
the screw rod is a single-bent screw rod, the upper end of the single-bent screw rod is connected with the lower end of the matched joint, the upper end of the matched joint is connected with the centralizer, and the upper end of the centralizer is connected with the lower end of the inclinometer joint.
Furthermore, the upper end of the inclinometer joint is free of the lower end of the magnetic drill collar.
Further, the centralizer is a large-size centralizer, and the upper end of the non-magnetic drill collar is connected with an upper drilling tool.
Further, the maximum outer diameter of the large-size centralizer is not less than 3mm of the maximum outer diameter of the drill bit.
Further, the drill bit is a PCD drill bit or a roller bit, and the length of the non-magnetic drill collar is 8-9 meters.
Further, the bending inclination degree of the single-bending screw is about 1 degree, the maximum bending inclination degree cannot exceed 1.25 degrees, and the minimum bending inclination degree is not less than 0.75 degree.
Compared with the prior art, the utility model following beneficial effect has:
1. the structural combination of the serial inclination-reducing drilling tools changes the traditional directional inclination-reducing mode, adopts a composite drilling mode to reduce inclination, and greatly improves the mechanical drilling speed.
2. The front end of the single-bent (straight) screw body is not provided with a undersize centralizer, the structure is more compact and reliable, and the failure rate is low.
3. Wherein, the combination 1 and the combination 3 can carry out the direction twisting operation when the running direction occurs in the descending process. Of course, it is not necessary for any product to achieve all of the above advantages simultaneously in practicing the invention.
Drawings
FIG. 1 is a schematic structural diagram of a series of five-section combined drilling tool for down-dip drilling of wells according to the present invention;
FIG. 2 is a schematic structural diagram of a second series of five-section combined drilling tool for down-dip drilling of wells according to the present invention;
fig. 3 is a structural schematic diagram of a series of five-section combined drilling tool for formulating the structure of the combined drilling tool for the well inclination-reducing drilling.
In the figure: the drill bit 1, the screw rod 2, the inclination measuring joint 3, the non-magnetic drill collar 4, the centralizer 5, the upper drilling tool 6 and the matching joint 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
referring to fig. 1, the present invention provides a technical solution: a series of five sections are established to fall to well and are inclined well drilling combination drilling tool structure includes:
the drill bit 1 is connected with the lower end of the screw rod;
the lower end of the screw rod is connected with the upper end of a drill bit;
the screw rod is a single-bent screw rod, the upper end of the single-bent screw rod is connected with the lower end of the inclinometer joint 3, and the upper end of the inclinometer joint is connected with the lower end of the non-magnetic drill collar 4.
Further, the upper end of the non-magnetic drill collar is connected with a centralizer 5, the centralizer is a large-size centralizer, and the upper end of the large-size centralizer is connected with an upper drilling tool 6.
Further, the maximum outer diameter of the large-size centralizer is not less than 3mm of the maximum outer diameter of the drill bit.
Further, the drill bit is a PCD drill bit or a roller cone drill bit.
Further, the length of the non-magnetic drill collar is 8-9 meters.
Further, the bending inclination degree of the single-bending screw is about 1 degree, the maximum bending inclination degree cannot exceed 1.25 degrees, and the minimum bending inclination degree is not less than 0.75 degree.
The cone bit of the used bit 1 has better inclination reducing effect than that of a PCD bit.
The front end of the single-bent (straight) screw 2 body is not provided with a lack-dimension centralizer, the structure is more compact and reliable, and the failure rate is low.
The length of the non-magnetic drill collar 4 is controlled to be 8-9 meters.
The diameter of the large-size centralizer 5 is not less than 3mm of the diameter of the drill bit 1.
In order to achieve a better inclination reducing effect, the rotating speed of a rotary table is controlled to be 40-60 rpm, and the bit pressure is controlled to be 60-120kn in the composite drilling.
The combination 1 is used in the situation that the azimuth is difficult to grasp and control when the descending well section drills. Meanwhile, the operation of correcting the direction can be carried out in the process of composite drilling and inclination reducing. Under normal circumstances, roller cone bit or PDC bit can be selected according to the slope reduction requirement. (1) The combined drilling of the roller bit can reach the descending slope of 4-6 degrees/100 meters. (2) The selection of PDC drill bit can achieve the descending slope of 3-5 degrees/100 meters during composite drilling. According to the design requirement of the drilling well at the present stage, the PDC drill bit is adopted by the drilling tool assembly, so that the construction requirement can be completely met. The disadvantage is that the drilling tool of the combination 1 can be lowered to the well inclination angle of about 5 degrees by the self inclination lowering capability at the later inclination lowering stage.
The degree of the drilling tool without the right single-bending screw rod is controlled to be about 1 degree, and the maximum degree cannot exceed 1.25 degrees. The structure mainly makes full use of the function of gravity declination in composite drilling and the directional function of a single-bent (straight) screw drilling tool to realize the plane and space three-dimensional declination function in the drilling process.
Example 2:
referring to fig. 2, the present invention provides a technical solution:
a series of five sections are established to fall to well and are inclined well drilling combination drilling tool structure includes:
the drill bit 1 is connected with the lower end of the screw rod;
the lower end of the screw rod is connected with the upper end of a drill bit;
the screw rod is a straight screw rod, the upper end of the straight screw rod is connected with the lower end of the inclinometer joint 3, and the upper end of the inclinometer joint is connected with the non-magnetic drill collar 4.
Further, the upper end of the non-magnetic drill collar is connected with a centralizer 5, the centralizer is a large-size centralizer, and the upper end of the large-size centralizer is connected with an upper drilling tool 6.
Further, the maximum outer diameter of the large-size centralizer is not less than 3mm of the maximum outer diameter of the drill bit.
Further, the drill bit is a PCD drill bit or a roller cone drill bit.
Further, the length of the non-magnetic drill collar is 8-9 meters.
The cone bit of the used bit 1 has better inclination reducing effect than that of a PCD bit.
The front end of the single-bent (straight) screw 2 body is provided with a non-undersized centralizer.
The length of the non-magnetic drill collar 4 is controlled to be 8-9 meters.
The diameter of the large-size centralizer 5 is not less than 3mm of the diameter of the drill bit 1.
In order to achieve a better inclination reducing effect, the rotating speed of a rotary table is controlled to be 40-60 rpm, and the bit pressure is controlled to be 60-120kn in the composite drilling.
The combination 2 drilling tool combination is used under the condition of stable azimuth (the condition is judged according to the stratum condition of the area and the experience of constructors) during the drilling of a declined well section, and a roller bit or a PDC bit can be selected according to the requirement of the declination rate under the normal condition in the composite drilling declination process. (1) The combined drilling of roller bit can reach the downward slope of 5-8 deg/100 m. (2) The selection of PDC drill bit can achieve the descending slope of 4-7 degrees/100 meters during composite drilling. According to the design requirement of the drilling well at the present stage, the PDC drill bit is adopted by the drilling tool assembly, so that the construction requirement can be completely met. The advantage is that the drilling tool combination of the group 2 can be lowered to the well inclination angle of 0 degree by the self inclination lowering capability in the later inclination lowering stage. The disadvantage is that the operation of correcting the direction can not be carried out in the composite drilling process.
Example 3:
referring to fig. 3, the present invention provides a technical solution: a series of five sections are established to fall to well and are inclined well drilling combination drilling tool structure includes:
the drill bit 1 is connected with the lower end of the screw rod;
the lower end of the screw rod is connected with the upper end of a drill bit;
the screw rod is a single-bent screw rod, the upper end of the single-bent screw rod is connected with the lower end of a matching joint 7, the upper end of the matching joint is connected with a centralizer 5, and the upper end of the centralizer is connected with the lower end of an inclinometer joint 3.
Furthermore, the upper end of the inclinometer joint is free of the lower end of the magnetic drill collar 4.
Further, the centralizer is a large-size centralizer, and the upper end of the non-magnetic drill collar is connected with an upper drilling tool 6.
Further, the maximum outer diameter of the large-size centralizer is not less than 3mm of the maximum outer diameter of the drill bit.
Further, the drill bit is a PCD drill bit or a roller bit, and the length of the non-magnetic drill collar is 8-9 meters.
Further, the bending inclination degree of the single-bending screw is about 1 degree, the maximum bending inclination degree cannot exceed 1.25 degrees, and the minimum bending inclination degree is not less than 0.75 degree.
The cone bit of the used bit 1 has better inclination reducing effect than that of a PCD bit.
The front end of the single-bent (straight) screw 2 body is not provided with a lack-dimension centralizer, the structure is more compact and reliable, and the failure rate is low.
The length of the non-magnetic drill collar 4 is controlled to be 8-9 meters.
The diameter of the large-size centralizer 5 is not less than 3mm of the diameter of the drill bit 1.
In order to achieve a better inclination reducing effect, the rotating speed of a rotary table is controlled to be 40-60 rpm, and the bit pressure is controlled to be 60-120kn in the composite drilling.
The combination 3 is used under the conditions that the descending slope is small when the descending slope well section is drilled, and the direction is difficult to grasp and control, and the operation of correcting the direction can be carried out in the descending slope process of the composite drilling. Under normal circumstances, roller cone bit or PDC bit can be selected according to the slope reduction requirement. (1) The reduced slope rate of about 3 degrees/100 meters can be achieved when the roller bit is selected for composite drilling. (2) The PDC drill bit can reach the descending slope of about 2 degrees/100 meters during composite drilling. The disadvantage is that the combined 3 drilling tool can be lowered to the well inclination angle of about 5 degrees by the self inclination lowering capability in the later inclination lowering stage, but can be directionally lowered to 0 degree by the function of the self single-bending screw rod.
The degree of the drilling tool without the right single-bending screw rod is controlled to be about 1 degree, and the maximum degree cannot exceed 1.25 degrees. The structure mainly makes full use of the function of gravity declination in composite drilling and the directional function of a single-bent (straight) screw drilling tool to realize the plane and space three-dimensional declination function in the drilling process.
The utility model discloses when using, can according to the well orbit of this well design fall the slope rate, fall oblique back surely inclined section well requirement and this area directional experience in the past select one or more drilling tool integrated configuration to carry out the construction operation at last. When one of the drilling tool assembly structures in the series is selected for downhole construction, the inherent function of the drilling tool assembly structure is basically stable, but can be changed within a certain range by adjusting the rotating speed of the rotary table at the surface and changing the construction bit pressure. And will not be described in detail herein. Therefore, the selection must be made with due care in selecting the drill tool combination.
The utility model discloses a mode that the gravity declined. The inclination is reduced by directly adopting a turntable composite drilling mode. The 4-aspect defects mentioned above are effectively avoided. The serial descending combined drilling tool structure combination is divided into three combination modes, and the descending rate and the function of each combination are different. The inclination-reducing drilling tool combination mode matched with the underground condition can be adopted according to different well track design requirements, and the requirement of controlling the inclination reduction of the well track is met. And the method of controlling the bit pressure and the rotary table drilling speed can be used for micro-controlling the inclination reducing rate of the well in the inherent inclination reducing range, so as to meet the requirement of well track control.
1. The structural combination of the serial inclination-reducing drilling tools changes the traditional directional inclination-reducing mode, adopts a composite drilling mode to reduce inclination, and greatly improves the mechanical drilling speed.
2. Wherein, the combination 1 and the combination 3 can carry out the direction twisting operation when the running direction occurs in the descending process.
Of course, it is not necessary for any product to achieve all of the above advantages simultaneously in practicing the invention.
All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.
In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A series of five sections are established to fall to well and are inclined well drilling combination drilling tool structure includes:
the upper end of the drill bit is connected with the lower end of the screw rod;
the lower end of the screw is connected with the upper end of the drill bit;
the magnetic drill collar is characterized in that the screw is a single-bent screw, the upper end of the single-bent screw is connected with the lower end of the inclinometer joint, and the upper end of the inclinometer joint is connected with the non-magnetic drill collar.
2. The series of five-section customized well-placement slant well drilling composite drilling tool structures according to claim 1, wherein the upper end of the non-magnetic drill collar is connected with a centralizer, the centralizer is a large-size centralizer, and the upper end of the large-size centralizer is connected with an upper drilling tool.
3. The series of five-segment customized well-drilling assembly tool structures for downhole deviated drilling according to claim 2, wherein the outside diameter of the large-size centralizer at the maximum is not less than 3mm than the outside diameter of the drill bit at the maximum.
4. The series of five-stage modular well drilling assembly tool structures defined in claim 1, 2 or 3, wherein the drill bit is a PCD bit or a roller cone drill bit.
5. The series of five-section customized directional well deflection drilling assembly tool structures of claim 4, wherein the length of the non-magnetic drill collar is 8-9 meters.
6. A series of five sections are established to fall to well and are inclined well drilling combination drilling tool structure includes:
the upper end of the drill bit is connected with the lower end of the screw rod;
the lower end of the screw is connected with the upper end of the drill bit;
the magnetic drill collar is characterized in that the screw is a straight screw, the upper end of the straight screw is connected with the lower end of the inclinometer joint, and the upper end of the inclinometer joint is connected with the non-magnetic drill collar.
7. The series of five-section customized well-placement slant well drilling composite drilling tool structures according to claim 6, wherein the upper end of the non-magnetic drill collar is connected with a centralizer, the centralizer is a large-size centralizer, and the upper end of the large-size centralizer is connected with an upper drilling tool.
8. The series of five-segment customized well-drilling assembly tool structures for downhole deviated drilling according to claim 7, wherein the outside diameter of the large-size centralizer at the maximum is not less than 3mm than the outside diameter of the drill bit at the maximum.
9. The series of five-stage modular well drilling assembly tool structures defined in claim 6, 7 or 8, wherein the drill bit is a PCD drill bit or a roller cone drill bit.
10. The series of five-section customized directional well deflection drilling assembly tool structures of claim 9, wherein the length of the non-magnetic drill collar is 8-9 meters.
11. A series of five sections are established to fall to well and are inclined well drilling combination drilling tool structure includes:
the upper end of the drill bit is connected with the lower end of the screw rod;
the lower end of the screw is connected with the upper end of the drill bit;
the inclination measuring device is characterized in that the screw rod is a single-bending screw rod, the upper end of the single-bending screw rod is connected with the lower end of the matching joint, the upper end of the matching joint is connected with the centralizer, and the upper end of the centralizer is connected with the lower end of the inclination measuring joint.
12. The series of five-stage customized dip drilling assembly tool structures of claim 11, wherein the upper end of the dip joint is free of a lower end of a magnetic drill collar.
13. The series of five-section customized directional well down-hole assembly tool structures of claim 12, wherein the centralizer is a large-sized centralizer and the upper end of the non-magnetic drill collar is connected to a top hole.
14. The series of five-segment customized well-tripping-drilling assembly tool structures of claim 13, wherein the largest outer diameter of the large-size centralizer is not less than 3mm of the largest outer diameter of the drill bit.
15. The series of five-stage customized well-placement slant-lowering drilling composite drilling tool structures according to claim 14, wherein the drill bit is a PCD drill bit or a roller cone drill bit, and the length of the nonmagnetic drill collar is 8-9 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922144617.1U CN211397450U (en) | 2019-12-03 | 2019-12-03 | Combined drilling tool structure for descending and drilling inclined well in series of five-section set direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922144617.1U CN211397450U (en) | 2019-12-03 | 2019-12-03 | Combined drilling tool structure for descending and drilling inclined well in series of five-section set direction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211397450U true CN211397450U (en) | 2020-09-01 |
Family
ID=72208382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922144617.1U Active CN211397450U (en) | 2019-12-03 | 2019-12-03 | Combined drilling tool structure for descending and drilling inclined well in series of five-section set direction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211397450U (en) |
-
2019
- 2019-12-03 CN CN201922144617.1U patent/CN211397450U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106014391B (en) | Near-bit measurement while drilling system | |
| US7946360B2 (en) | Downhole drilling of a lateral hole | |
| CN109312603B (en) | Apparatus and system for reducing cyclic torque on directional drilling actuators | |
| EP0109699B1 (en) | Down-hole motor and method for directional drilling of boreholes | |
| US4485879A (en) | Downhole motor and method for directional drilling of boreholes | |
| CN104295232A (en) | Single-action double-pipe coring overburden drill tool for air down-the-hole hammer | |
| SE454196C (en) | EARTH AND MOUNTAIN DRILLING DEVICE CONCERNING BORING AND LINING OF THE DRILL | |
| CN110043229A (en) | A kind of more well group connection convergence recovery methods of Gas Hydrate In Sea Areas | |
| CN111441718A (en) | Construction method, system and application for high-precision pilot shaft excavation of large-section steep slope long inclined shaft | |
| CN107605410B (en) | A kind of tubular column structure enhancing coiled tubing drilling horizontal extension ability | |
| CN113047772A (en) | Tool and method for performing directional operation in cooperation with downhole power drilling tool | |
| CN112081528A (en) | Horizontal section efficient support-free oscillating drilling tool combination and method | |
| CN206035384U (en) | Directed drilling tool combination of adaptation fuling shale air water horizontal well | |
| CN109083593B (en) | Hydraulic pushing drill bit directional guiding drilling tool | |
| CN211397450U (en) | Combined drilling tool structure for descending and drilling inclined well in series of five-section set direction | |
| CN101210480A (en) | Four-in-one drilling tool | |
| CN115142790B (en) | Directional construction process for rotary guide drilling tool of deep well and long inclined well inverted well drilling machine | |
| CN210598823U (en) | Single-bent screw oscillating drilling tool combination for directional well of slim hole | |
| CN211900469U (en) | Drill bit structure for geological exploration | |
| CN214247216U (en) | Horizontal drilling stabilizer of flexible drill column for ultra-short radius horizontal drilling | |
| CN209556929U (en) | Portable type whipstock | |
| CN111197461A (en) | Horizontal well suspended sidetracking method and sidetracking tool | |
| CN210622733U (en) | Composite drill rod capable of deeply drilling | |
| CN113107456A (en) | Method and device for controlling inclination angle of drill hole in coal mine underground composite drilling | |
| CN109538121A (en) | Portable type whipstock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |