CN214660010U - Non-magnetic short section for ultra-short radius - Google Patents
Non-magnetic short section for ultra-short radius Download PDFInfo
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- CN214660010U CN214660010U CN202121214186.2U CN202121214186U CN214660010U CN 214660010 U CN214660010 U CN 214660010U CN 202121214186 U CN202121214186 U CN 202121214186U CN 214660010 U CN214660010 U CN 214660010U
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- drill collar
- collar body
- magnetic drill
- probe
- pistons
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Abstract
The utility model provides a no magnetism nipple joint for ultrashort radius. Relates to the technical field of oil field drilling tools. Two sides of the pipe wall of the non-magnetic drill collar body are provided with grooves, a probe pipe is arranged in each groove, and a gland is arranged on the outer side of each probe pipe and is in sealing connection with the non-magnetic drill collar body through bolts; pistons are arranged on the other two sides of the non-magnetic drill collar body which is crossed by 90 degrees with the two probe tubes, side holes are formed in the tops of the pistons and communicated with the central channel, and the lower portions of the pistons are connected with the centering block through dovetail groove guide rails. The utility model discloses following beneficial effect has: the utility model discloses a to have no magnetism drill collar and right the piece and fuse as an organic whole, reduced the length of whole tool string, improve the detection precision of exploring tube simultaneously, the piece of righting that can retract can pass through little curvature horizontal well smoothly.
Description
The technical field is as follows:
the utility model belongs to the technical field of the oil field drilling tool technique and specifically relates to a no magnetism nipple joint for ultrashort radius.
Background art:
the ultra-small curvature horizontal well technology is a low-cost and high-benefit residual oil exploitation technology, is particularly suitable for the reconstruction of old wells such as casing damage wells and low-yield wells and the like and the development of uneconomical lamellar thin oil reservoirs, develops residual oil on the top of a thick oil layer with the thickness of more than 2m by side drilling and windowing by researching the residual oil distribution rule of the old oil fields and utilizing the ultra-small curvature horizontal well technology, and obtains better economic effect;
the low-curvature horizontal well has a high build-up rate, and the conventional tool string has a long length and is difficult to pass through a downhole drill string.
The utility model has the following contents:
in order to solve the problem, the utility model provides a no magnetism nipple joint for ultrashort radius.
The technical scheme of the utility model is that: a nonmagnetic short joint for ultrashort radius comprises a nonmagnetic drill collar body, wherein an upper joint is arranged at the upper part of the nonmagnetic drill collar body, a lower joint is arranged at the lower part of the nonmagnetic drill collar body, a central channel is arranged in the nonmagnetic drill collar body, grooves are formed in two sides of the pipe wall of the nonmagnetic drill collar body, a probe pipe is arranged in each groove, and a gland is arranged on the outer side of each probe pipe and is in sealing connection with the nonmagnetic drill collar body through a bolt;
pistons are arranged on the other two sides of the non-magnetic drill collar body which is crossed by 90 degrees with the two probe tubes, side holes are formed in the tops of the pistons and communicated with the central channel, and the lower portions of the pistons are connected with the centering block through dovetail groove guide rails.
The gland is located the probe outside position has a section arc surface, and this arc surface is concentric with the probe.
The bottom of the righting block is provided with a spring, and the lower part of the spring is arranged in a counter bore at the lower part of the non-magnetic drill collar body.
The gland is made of non-magnetic steel.
The dovetail groove guide rail is an inclined guide rail which contracts towards the center line of the non-magnetic drill collar body from top to bottom.
The utility model discloses following beneficial effect has: when the pressure of drilling fluid promotes the piston down, the piston promotes through the dovetail guide rail and rights the piece and outwards removes, plays the effect of rightting, when through little curvature horizontal well, can stop the injection of drilling fluid temporarily, when there is not liquid pressure in the center channel, right the piece and retract under the effect of spring, reduce whole excircle diameter, be convenient for through little curvature horizontal well, the gland in the probe outside is unanimous at the thickness and the wall thickness of arc surface position very thin simultaneously, has reduced the magnetic force influence of gland to the probe, improves detection effect, the utility model discloses a fuse together nonmagnetic drill collar and right the piece, reduced the length of whole tool string, improve the detection precision of probe simultaneously, the piece of righting that can withdraw, can pass through little radius well smoothly.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a cross-sectional view a-a of fig. 1.
In the figure, 1-a non-magnetic drill collar body, 2-an upper joint, 3-a lower joint, 4-a central channel, 5-a spring, 6-a centering block, 7-a piston, 8-a side hole, 9-a probe, 10-a gland, 11-a dovetail groove guide rail and 12-an arc surface.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings:
as shown by combining fig. 1 and fig. 2, a non-magnetic short section for ultrashort radius comprises a non-magnetic drill collar body 1, wherein an upper joint 2 and a joint 3 connecting tool string are arranged on the upper part of the non-magnetic drill collar body 1, a central channel 4 is arranged in the non-magnetic drill collar body, grooves are formed in two sides of the pipe wall of the non-magnetic drill collar body 1, a probe pipe 9 is installed in each groove, and a gland 10 is arranged on the outer side of the probe pipe 9 and is in sealing connection with the non-magnetic drill collar body 1 through bolts;
pistons 7 are arranged on the other two sides of the non-magnetic drill collar body 1 which is crossed by the two probe tubes 9 at an angle of 90 degrees, side holes 8 are formed in the tops of the pistons 7 and communicated with the central channel 4, and the lower portions of the pistons 7 are connected with the centering block 6 through dovetail groove guide rails 11.
The gland 10 is located at the outer side of the probe tube 9 and is provided with a section of arc surface 12, the arc surface 12 is concentric with the probe tube 9, namely the gland 10 at the outer side of the probe tube 9 is consistent in thickness and very thin in wall thickness at the position of the arc surface 12, and the magnetic influence of the gland 10 on the probe tube 9 is reduced.
The bottom of the centering block 6 is provided with a spring 5, the lower part of the spring 5 is arranged in a counter bore at the lower part of the non-magnetic drill collar body 1, and the spring 5 pushes the centering block 6 to move upwards and retract when the drilling fluid has no pressure.
The gland 10 is made of non-magnetic steel.
The dovetail groove guide rail 11 is an inclined guide rail which shrinks from top to bottom towards the central line of the non-magnetic drill collar body 1, and when the piston 7 moves downwards, the centering block 6 is pushed to move outwards.
When drilling is started, the pressure of drilling fluid pushes the piston 7 to move downwards, the piston 7 pushes the centering block 6 to move outwards through the dovetail groove guide rail 11, a centering effect is achieved, when a small-curvature horizontal well hole passes through, the injection of the drilling fluid can be stopped temporarily, when no fluid pressure exists in the central channel 4, the centering block 6 retracts under the action of the spring 5, the diameter of the whole excircle is reduced, the small-curvature horizontal well hole can be conveniently passed through, meanwhile, the thickness of the gland 10 on the outer side of the probe tube 9 is consistent at the position of the arc surface 12, the wall thickness is very thin, and the magnetic influence of the gland 10 on the probe tube 9 is reduced.
Claims (5)
1. The utility model provides a no magnetism nipple joint for ultrashort radius, includes no magnetism drill collar body (1), its characterized in that: the upper part of the non-magnetic drill collar body (1) is provided with an upper joint (2), the lower part of the non-magnetic drill collar body is provided with a lower joint (3), a central channel (4) is arranged in the non-magnetic drill collar body, two sides of the pipe wall of the non-magnetic drill collar body (1) are provided with grooves, probe pipes (9) are arranged in the grooves, and the outer sides of the probe pipes (9) are provided with press covers (10) which are hermetically connected with the non-magnetic drill collar body (1) through bolts;
pistons (7) are arranged on the other two sides of the non-magnetic drill collar body (1) which is crossed by the two probe tubes (9) at an angle of 90 degrees, side holes (8) are formed in the tops of the pistons (7) and communicated with the central channel (4), and the lower parts of the pistons (7) are connected with the centering block (6) through dovetail groove guide rails (11).
2. The nonmagnetic short section for ultrashort radius according to claim 1, wherein: the gland (10) is positioned at the outer side of the probe tube (9) and is provided with a section of arc surface (12), and the arc surface (12) is concentric with the probe tube (9).
3. The nonmagnetic short section for ultrashort radius according to claim 1, wherein: the bottom of the righting block (6) is provided with a spring (5), and the lower part of the spring (5) is arranged in a sunken hole at the lower part of the non-magnetic drill collar body (1).
4. The nonmagnetic short section for ultrashort radius according to claim 1, wherein: the gland (10) is made of non-magnetic steel.
5. The nonmagnetic short section for ultrashort radius according to claim 1, wherein: the dovetail groove guide rail (11) is an inclined guide rail which contracts towards the central line of the non-magnetic drill collar body (1) from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121214186.2U CN214660010U (en) | 2021-05-31 | 2021-05-31 | Non-magnetic short section for ultra-short radius |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121214186.2U CN214660010U (en) | 2021-05-31 | 2021-05-31 | Non-magnetic short section for ultra-short radius |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214660010U true CN214660010U (en) | 2021-11-09 |
Family
ID=78496479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121214186.2U Active CN214660010U (en) | 2021-05-31 | 2021-05-31 | Non-magnetic short section for ultra-short radius |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214660010U (en) |
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2021
- 2021-05-31 CN CN202121214186.2U patent/CN214660010U/en active Active
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