CN116104480B - Rod throwing release device of underground drill logging instrument and application method thereof - Google Patents
Rod throwing release device of underground drill logging instrument and application method thereof Download PDFInfo
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- CN116104480B CN116104480B CN202111330429.3A CN202111330429A CN116104480B CN 116104480 B CN116104480 B CN 116104480B CN 202111330429 A CN202111330429 A CN 202111330429A CN 116104480 B CN116104480 B CN 116104480B
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000005553 drilling Methods 0.000 claims abstract description 155
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 210000002445 nipple Anatomy 0.000 claims description 60
- 239000000725 suspension Substances 0.000 claims description 35
- 239000007788 liquid Substances 0.000 claims description 19
- 239000010985 leather Substances 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000003129 oil well Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 15
- 238000003384 imaging method Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000003860 storage Methods 0.000 description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 6
- 235000017491 Bambusa tulda Nutrition 0.000 description 6
- 241001330002 Bambuseae Species 0.000 description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 6
- 239000011425 bamboo Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/013—Devices specially adapted for supporting measuring instruments on drill bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
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- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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Abstract
The invention discloses a rod throwing release device of an underground drill logging instrument and a use method thereof, and belongs to the technical field of drill logging. According to the invention, through the arrangement of the release assembly, the rod throwing assembly, the supporting pup joint, the drilling tool hanging pup joint and the instrument hanging pup joint, the well logging instrument is conveyed underground under the protection of the drilling tool drill rod in a mode of presetting the well logging instrument in the drilling tool drill rod, and the well logging instrument is released from the TBL drill bit into the open hole well at a well logging station through the rod throwing assembly, so that well logging operation is implemented; after logging operation is completed, the well logging instrument is fished out of the well from the water hole of the drilling tool by utilizing a salvaging tool, so that the problems that equipment damage and logging accidents are easy to occur due to long-distance collision and friction between the polar plate of the non-electric control retracting well diameter spring and the micro resistivity scanning imaging logging instrument and the inner wall of the drilling tool in the prior art are solved, the process safety, stability and reliability of the well logging operation through the drilling tool are improved, and the logging operation efficiency and the measurement operation precision are ensured.
Description
Technical Field
The invention relates to a release device of an underground logging instrument and a use method thereof, in particular to a rod throwing release device of an underground drilling bit logging instrument and a use method thereof, and belongs to the technical field of drilling bit logging.
Background
The logging-by-bit (TBL) is a logging method for acquiring formation evaluation data by penetrating a logging instrument through a drill rod and a drill bit with special structural design into an open hole section, and has the advantages of low operation cost, short operation time, small operation risk, high logging data precision and the like, so that the method is widely applied to the field of oilfield production. According to the difference of the structural characteristics and the functional characteristics of the underground logging instrument, the logging operation by the drill bit can be performed in a cable lifting mode or in a pumping mode.
At present, most of well logging instruments used in oil and gas field production in China do not have an electric control borehole diameter spring arm leg opening function/an electric control electric imaging polar plate leg opening function, a protective sleeve rod throwing release mode is adopted in well logging operation by using the well logging instruments, and after a drilling tool, a protective sleeve and a drill bit are lowered into a target stratum, the well logging instruments which are placed in advance are released through rod throwing and then pumped out of the drill bit and are hung on the drill bit, and well logging operation is carried out through lifting the drilling tool. In the process, because the well diameter spring arm and the electric imaging polar plate are always umbrella-shaped and open, if a cable conveying mode and a hydraulic pumping mode are adopted, collision and friction can be generated with the inner wall of the drilling tool for a long time in the process of lowering and lifting in the water hole of the drilling tool, the well diameter spring arm and the polar plate are extremely easy to damage, the well logging precision is influenced, even the well logging failure is caused, the oil field production is influenced, and the application of the drilling tool passing through the drilling tool for the non-electric control well diameter spring arm and the electric imaging polar plate has become a technical bottleneck for popularization of the drilling tool logging technology.
In the prior art, logging and open well construction are realized in a novel storage type logging release system, which is mainly applicable to logging construction of difficult wells such as a branch well, a highly-deviated well, a horizontal well, an underbalanced well and the like. The CN201220388212.8 through-drilling tool storage type logging instrument releaser solves the technical problem that logging instruments can be safely and reliably released from drilling tool water holes when through-drilling tool storage type logging is performed, and the logging needs of the logging instruments in vertical wells, high-inclination wells and horizontal wells with complex well conditions are met. In the ' CN202020232058.X ' storage type logging instrument releasing device ', the storage type logging instrument is fixedly connected through the connecting component, the plugging component is plugged into the releaser main body, the clamping component is arranged in the releaser main body, so that the clamping spring inwards pushes the inner barrel and the arc-shaped clamping plate, the inner wall of the arc-shaped clamping plate is attached to the outer wall of the connecting rod, the left side surface of the arc-shaped clamping plate is clamped with the right side surface of the conical head, so that the plugging component is stably clamped, the storage type logging instrument is stably clamped and fixed, the storage type logging instrument is prevented from falling off, the conical ring body is pushed leftwards through the electric telescopic rod, the left side outer wall of the conical ring body is in sliding connection with the inner wall of the inclined plate, the arc-shaped clamping plate outwards moves to release the plugging component, and the ejection spring outwards pushes the plugging component, so that the storage type logging instrument is automatically released and ejected; and then solve when the speed of putting down appears changing, storage type logging instrument can take place the problem that drops etc..
Therefore, it is necessary to develop a downhole protection tool for the logging instrument with the drill bit, improve the safety and stability of the logging process, improve the operation efficiency and the measurement accuracy, and promote the innovation and perfection of the logging process with the drill bit.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a rod throwing release device of a downhole drilling logging instrument and a use method thereof. In the technical scheme, the safety, stability and reliability of the well logging process of the drill bit are improved through the arrangement of the release assembly, the rod throwing assembly, the drilling tool hanging nipple, the instrument hanging nipple, the supporting nipple and the like, the operation efficiency and the measurement accuracy are guaranteed, and the innovation and perfection of the well logging process method of the drill bit are promoted.
In order to achieve the technical purpose, the following technical scheme is provided:
The technical scheme provides: a rod throwing release device of a downhole drilling logging instrument comprises a release assembly, a rod throwing assembly, a support nipple, a drilling tool hanging nipple and an instrument hanging nipple;
Wherein, release assembly: the drilling tool comprises a release main body and a suspension seat cylinder sleeved with the release main body in a matched manner, wherein the release main body is a cylindrical release main body, an upper internal thread used for being connected with a drilling rod of a drilling tool is arranged at the upper end of the release main body, a lower internal thread is arranged at the lower end of the release main body, a central water hole is formed in the upper part of the release main body, a diversion inclined hole communicated with the central water hole is formed in the circumferential outer side surface of the lower end of the release main body, and the diversion inclined hole is used for communicating the central water hole to the outside of the release main body so as to drain drilling mud liquid flow;
The release main body is movably connected (such as hinged) with hooks and pawls, and the hooks and the pawls are uniformly distributed along the circumferential section of the release main body. More specifically, the articulation point setting of couple is in the couple middle part, and couple upper portion is equipped with both can stretch out the outer periphery of release main part and rotatable recoverable evagination crochet tooth, and couple lower part is equipped with both can stretch out release main part inner periphery and rotatable recoverable interior exhibition fin, and here, the theory of operation that relates to is: when the outer convex hook teeth at the upper part of the hook extend out of the outer circumferential surface of the release main body, the inner unfolding tail fin at the lower part of the hook extends and enters the inside of the central water hole of the release main body. More specifically, the movable connection point of the pawl is arranged on one end of the pawl, the other end of the pawl is provided with a tooth surface in a reversed tooth shape, and the tooth surface is supported into the central water hole through a tension spring (at the moment, the tension spring stretches) and protrudes out of the inner circumferential surface of the release main body;
The hanging seat cylinder is cylindrical, a hanging window matched with a hook (comprising a hook structure and the matching of the setting position of the hook structure, especially the matching with the convex hook tooth) is arranged on the side wall of the hanging seat cylinder, and the working principle involved is as follows: when the outer circumferential surface of the release main body is protruded out of the outer circumferential surface of the release main body, the release main body can be hooked in the hanging window in a matched mode, so that hanging connection of the release main body is achieved, and the release main body is fixedly arranged on the hanging seat cylinder.
Wherein, throw excellent assembly: the device comprises a rod throwing main body and a righting mechanism arranged on the rod throwing main body, wherein the rod throwing main body is a straight long rod-shaped rod throwing main body, and one end of the rod throwing main body is a salvaging end provided with a salvaging head structure and is used for matching with a female connector on a subsequent salvaging device and clamping the female connector; the other end of the rod throwing main body is a release end provided with a gun head structure, the release end is provided with a ring groove surface which is matched with the tooth surface (including structure matching) and is in a inverted tooth shape, meanwhile, preferably, rod throwing liquid flow holes are formed in the release end and distributed above and below the ring groove surface, the rod throwing liquid flow holes are mutually communicated in the axial direction, so that the blockage of the release end to underground liquid flow is reduced, and the effective circulation of drilling liquid flow is promoted. In addition, form corresponding cooperation between rifle head structure and the central water hole, here, the theory of operation that involves is: when the release end is thrown into the central water hole, the impact force of the rod throwing main body can push the inward expanding tail fin (stretching into the central water hole) to be retracted so as to drive the hook to rotate (for example, rotate along the hinge shaft), so that the outward convex hook teeth extending out of the outer circumferential surface of the release main body can also realize rotation recovery, release and release the suspension connection between the release main body and the suspension seat cylinder, and simultaneously, the tooth surfaces can be matched and clamped with the ring groove surfaces under the elastic action of the tension spring (force interaction), so that the release main body and the rod throwing main body are connected into a whole, and the release main body can be vertically hung at the lower end of the rod throwing main body.
Wherein, support nipple joint: the drill bit well logging device comprises a circular rod-shaped main rod body, wherein an upper threaded connection structure matched with a lower internal thread of a release main body is arranged at the upper end of the main rod body, and a lower threaded connection structure used for being fixedly connected with a drill bit well logging instrument is arranged at the lower end of the main rod body; the main rod body is sleeved with a hanging block capable of freely rotating along the main rod body (for example, the hanging block is installed in a manner of embedding, buckling and the like), the hanging block is a cylindrical hanging block, the outer diameter D of the hanging block is larger than the maximum outer diameter of the main rod body, a well liquid dredging hole penetrating through the upper end face and the lower end face is axially formed in the hanging block and used for conducting underground drilling liquid flow, and the upper end face and the lower end face of the hanging block are conical hanging surfaces.
Wherein, drilling tool hangs nipple joint: the upper end is provided with the internal thread I that is used for being connected with the drilling tool drilling rod, and the lower extreme is provided with the external screw thread I that is used for being connected with the instrument suspension nipple, and inside formation is columniform cavity I, and cavity I upper portion is by the diameter shrink formation and towards the seat section of thick bamboo supporting shoulder of top, and the cavity I aperture on seat section of thick bamboo supporting shoulder upper portion cooperatees with the external diameter size that hangs the seat section of thick bamboo, makes to hang the seat section of thick bamboo and can be supported by seat section of thick bamboo supporting shoulder, and will hang the seat section of thick bamboo and place in the inside columniform cavity I upper portion that the drilling tool hangs the nipple.
Wherein, the instrument hangs nipple joint: the upper end of the drill pipe is provided with an internal thread II which is used for being connected with the drilling tool suspension nipple, and the internal thread II is matched with the external thread I; the lower end is provided with an external thread II for connecting a TBL drill bit; the inside formation is columniform cavity II, is provided with the support rib post on the local periphery of cavity II, and the support rib post distributes along the circumference, and the top combination of each support rib post forms conical supporting profile face, supports the lower extreme surface of hanging the piece and hangs the cooperation, can hang the support nipple joint that is connected with the drill bit logging instrument on instrument suspension nipple joint, under the cooperation support state, the hole intercommunication between the hole was dredged to well liquid on the piece and the support rib post forms the flow channel that link up, guarantees the circulation of drilling fluid.
Further, preferably, in the release assembly, a weak point pin connected with the release main body is arranged below a hook hinging point movably hinged on the release main body, namely an initial shearing resistance is arranged between the hook and the release main body, so that the phenomenon that the release main body is accidentally released relative to the hanging seat cylinder to cause logging accidents due to the fact that slurry liquid flow impacts push the hook to rotate along a hinging shaft in the normal slurry circulation process is prevented; when the rod is released, under the pushing action of the impact force of the rod throwing main body, the weak point pin is sheared by overcoming the initial shearing resistance, so that the normal process release of the release main body relative to the hanging seat cylinder is ensured.
Further, in the rod throwing assembly, preferably, a spherical leather bag is fixedly arranged on the rod throwing main body, the diameter of the spherical leather bag is larger than or equal to 2 times of the diameter of the rod throwing main body and smaller than the diameter of a drilling tool water hole, so that the spherical leather bag can properly block the drilling tool water hole, the slurry can increase the thrust for the rod throwing main body, and meanwhile, a certain gap can be reserved between the spherical leather bag and the inner wall of the drilling tool water hole, and the slurry flow in a drilling tool drill rod can keep normal circulation.
The technical scheme also provides: the application method of the rod throwing release device of the downhole through-bit logging instrument comprises the following steps:
s1: the release assembly, the support nipple and the well logging instrument passing through the drill bit are sequentially connected from top to bottom to form a drilling tool instrument string, the drilling tool hanging nipple and the instrument hanging nipple are sequentially connected and installed between a drilling tool drill rod and a TBL drill bit, the drilling tool instrument string is put into a drilling tool water hole, and a hanging seat barrel is kept to sit and prop up in the drilling tool hanging nipple connected to the drilling tool drill rod, so that the drilling tool instrument string is hung on the drilling tool drill rod;
at this time, the through-bit logging instrument is accommodated in the drilling tool water hole at the upper part of the TBL drill bit;
S2: connecting and starting a drilling machine, and conveying a drilling tool drill rod and a drilling tool instrument string which is connected with the drilling tool drill rod in a hanging manner into the well until the drilling tool drill rod reaches a downhole logging station;
s3: after drilling is stopped, a release end of the rod throwing assembly is thrown downwards into a drilling tool water hole, the rod throwing assembly descends according to self gravity, if the rod throwing assembly is blocked in descending, a pump can be started to circulate drilling fluid flow to push, a gun head structure on a rod throwing main body is inserted into a central water hole at the upper end of the release main body, under the pushing action of the rod throwing main body, an outer convex hook tooth is rotated to be recovered, hanging connection between the release main body and a hanging seat cylinder is released, and meanwhile, a tooth surface and an annular groove surface are matched and clamped, the release main body and the rod throwing main body are connected into a whole, and the lower end of the rod throwing main body is hung;
s4: pre-lifting a drilling tool drill rod to enable the drilling tool instrument string to further descend relative to the drilling tool drill rod until a hanging block on the supporting nipple is attached to and supported on a supporting rib column in the instrument hanging nipple;
in order to prevent the situation that relative movement between the drilling tool instrument string and the drilling tool drill rod is possibly blocked in the pre-lifting process, preferably, the drilling tool drill rod is pre-lifted, and simultaneously, the mud pump is started to pump mud underground, so that the drilling tool instrument string is pushed to descend;
At this time, the logging instrument passing through the drill bit passes through the TBL drill bit and is released into the open hole to be measured;
S5: connecting the drilling rod of the drilling rig lifting drilling tool again, and performing logging operation on the target oil well;
S6: after logging operation is completed, a special tool (such as a fisher, wherein a female joint matched with a fishing head structure is arranged on the fisher) is used for grabbing the salvaging end of the rod throwing main body, and the drilling tool instrument string is fished out of the well to complete logging operation of the drilling tool logging instrument.
In the technical scheme, the relation of the positions such as the 'between', 'upper end', 'lower end', 'upper part', 'circumference outside face', 'outside', 'other side', 'middle part', 'one end', 'other end', 'inner circumference face', 'upper part', 'lower part', 'inner part', 'middle part' and 'axial direction' is defined according to the condition of the actual use state, and is a common term in the technical field and a common term in the actual use process of the technical personnel.
In the description of the present technical solution, unless explicitly specified and limited otherwise, it should be noted that "disposed" and "connected" should be interpreted broadly, for example, they may be fixed connections, portable connections, or integrally connected; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, unless otherwise specifically defined or defined herein. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
By adopting the technical scheme, the beneficial technical effects brought are as follows:
In the invention, a mode that the logging instrument with the drill bit is preset in a drill rod of a drilling tool is adopted, the logging instrument with the drill bit is conveyed underground under the protection of the drill rod of the drilling tool, and the logging instrument with the drill bit is released into an open hole well from a TBL drill bit by throwing a rod throwing assembly at a logging station, so that logging operation is implemented; after logging operation is completed, the well logging instrument is fished out of the drilling tool water hole by utilizing a salvaging tool, the problems that equipment damage and logging accidents are easy to occur due to collision and friction between a long distance of a polar plate of the drilling tool and the inner wall of the drilling tool by using a non-electric control retracting borehole diameter spring and a micro resistivity scanning imaging logging instrument in the prior art are solved, the process safety, stability and reliability of the well logging operation are improved, the well logging process of the drilling tool is perfected, the well logging operation efficiency and the measurement operation precision are improved, and popularization and application of the well logging technology of the drilling tool are promoted.
Drawings
FIG. 1 is a block diagram of a release assembly;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a block diagram of a rod assembly;
FIG. 4 is a block diagram of a strut;
FIG. 5 is a view of the construction of the suspension nipple of the drilling tool;
FIG. 6 is a block diagram of an instrument suspension sub;
FIG. 7 is a view of the structure of the release assembly in a state of being engaged with the drilling tool suspension nipple;
FIG. 8 is a diagram showing the structure of the release assembly and the drill hanging nipple in the released state after rod casting;
FIG. 9 is a cross-sectional view taken along line B-B of FIG. 8;
FIG. 10 is a block diagram showing the status of the hooking of the support nipple to the instrument suspension nipple;
Wherein: 1. the device comprises a release main body, 2, a hanging seat cylinder, 3, a rod throwing main body, 4, a righting mechanism, 5, an instrument hanging short joint, 6, a main rod body, 7, a hanging block, 8, a drilling tool hanging short joint, 9, a supporting rib column, 10, a diversion inclined hole, 11, a hook, 12, a pawl, 13, a weak point pin, 14, a tension spring, 15, a drilling tool drill rod, 16, a spherical leather bag, 17, a rod throwing liquid flow hole, 18, a ring groove surface, 19, a split screw sleeve, 20 and a hanging window.
Detailed Description
In the following, it is obvious that the embodiments described are only some embodiments of the present invention, but not all embodiments, by clearly and completely describing the technical solutions in the embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment provides a rod throwing release device of a downhole drilling logging instrument, which comprises a release assembly, a rod throwing assembly, a support nipple, a drilling tool hanging nipple 8 and an instrument hanging nipple 5;
The release assembly comprises a release main body 1 and a suspension seat cylinder 2 which is matched and sleeved with the release main body 1, wherein the upper end of the release main body 1 is matched and connected with a drilling tool drill rod 15 (such as in threaded connection), a central water hole is formed in the upper part of the release main body 1, a diversion inclined hole 10 communicated with the central water hole is formed in the circumferential outer side surface of the lower end of the release main body 1, and the diversion inclined hole 10 is used for communicating the central water hole to the outside of the release main body 1; the release main body 1 is movably connected with a hook 11 and a pawl 12, and the hook 11 and the pawl 12 are uniformly distributed along the circumferential section of the release main body 1; the upper part of the hook 11 is provided with a convex hook tooth which can extend out of the outer circumferential surface of the release main body 1 and can be rotationally recovered, and the lower part of the hook 11 is provided with an inward-extending tail wing which can extend out of the inner circumferential surface of the release main body 1 and can be rotationally recovered; one end of the pawl 12 is provided with a tooth surface which is supported into the central water hole through a tension spring 14 and protrudes out of the inner circumferential surface of the release main body 1; a hanging window 20 matched with the hook 11 is arranged on the side wall of the hanging seat cylinder 2;
The rod throwing assembly comprises a rod throwing main body 3 and a centralizing mechanism 4 arranged on the rod throwing main body 3, wherein one end of the rod throwing main body 3 is a salvaging end provided with a fishing head structure, the other end of the rod throwing main body is a releasing end provided with a gun head structure, an annular groove surface 18 matched with a tooth surface is arranged on the releasing end, and the gun head structure is correspondingly matched with a central water hole;
The support pup joint comprises a main rod body 6, the upper end of the main rod body 6 is in fit connection (such as threaded connection) with the lower end of the release main body 1, the lower end of the main rod body 6 is in fit connection (such as threaded connection) with a drill logging instrument, and a hanging block 7 capable of freely rotating along the main rod body 6 is sleeved on the main rod body 6;
The upper end of the drilling tool suspension nipple 8 is in fit connection (such as threaded connection) with a drilling tool drill rod 15, the lower end of the drilling tool suspension nipple is in fit connection (such as threaded connection) with the upper end of the instrument suspension nipple 5, a cavity I is formed in the drilling tool suspension nipple, a seat barrel supporting shoulder which is formed by diameter shrinkage and faces upwards is arranged at the upper part of the cavity I, and the aperture of the cavity I at the upper part of the seat barrel supporting shoulder is matched with the outer diameter of the suspension seat barrel 2;
The lower end of the instrument suspension nipple 5 is connected with a TBL drill bit in a matched mode (such as threaded connection), a cavity II is formed in the instrument suspension nipple 5, a supporting rib column 9 is arranged in a part of the cavity II, the top ends of the supporting rib columns 9 are combined to form a supporting profile surface, and supporting matching is formed between the supporting profile surface and the lower end suspension surface of the suspension block 7.
The "mating connection" in this embodiment includes a threaded connection, as well as other connection means. For threaded connection, the internal threads and the external threads can be correspondingly arranged according to actual requirements.
The shapes of the various components in this embodiment, including circular/straight, may be other shapes that allow for a drill logging process.
Example 2
Based on example 1, this example further,
A rod throwing release device of a downhole drilling logging instrument comprises a release assembly, a rod throwing assembly, a supporting nipple, a drilling tool hanging nipple 8 and an instrument hanging nipple 5;
With respect to the release assembly, as shown in fig. 1 and 2, the release assembly comprises a release main body 1 and a suspension seat cylinder 2 sleeved with the release main body 1 in a matched manner, wherein the upper end and the lower end of the release main body 1 are respectively provided with an upper internal thread and a lower internal thread, the upper internal thread is used for being connected with a drilling tool drill rod 15, a central water hole is formed in the upper portion of the release main body 1, six diversion inclined holes 10 are uniformly formed in the outer circumferential surface of the lower end of the release main body 1, and the diversion inclined holes 10 are communicated with the central water hole so as to communicate the central water hole to the outside of the release main body 1. Three hooks 11 and three pawls 12 are respectively and hingedly arranged on the release main body 1 along the circumferential section, the hooks 11 and the pawls 12 are uniformly distributed along the circumferential section, the hooks 11 and the pawls 12 are alternately arranged, the hinge point of the hook 11 is arranged at the middle position of the hook, a weak point pin 13 (shearing force is 30 kg) connected with the release main body 1 is arranged at the lower part of the hinge point, an outer convex hook tooth which can extend out of the outer circumferential surface of the release main body 1 and can be rotationally recovered is arranged at the upper part of the hook 11, and an inner unfolding tail fin which can extend out of the inner circumferential surface of the release main body 1 and can be rotationally recovered is arranged at the lower part of the hook; the hinging point of the pawl 12 is arranged at one end head, the other end of the pawl 12 is provided with a tooth surface with a reverse tooth shape, and the tooth surface is supported by a tension spring 14 and protrudes out of the inner circumferential surface of the release main body 1 towards the center water hole;
The hanging seat cylinder 2 is cylindrical and can be sleeved with the release main body 1, and three hanging windows 20 which are correspondingly matched with the structure of the hooks 11 and the setting positions of the hooks are formed in the side wall of the hanging seat cylinder 2.
Regarding the rod assembly: as shown in fig. 3, the rod throwing device is composed of a rod throwing main body 3, two righting mechanisms 4 (specifically, equivalent centralizers) and two spherical leather bags 16, wherein the rod throwing main body 3 is in a straight long rod shape, one end of the rod throwing main body 3 is a salvaging end provided with a fishing head structure, and the other end of the rod throwing main body 3 is a releasing end provided with a gun head structure. Three radial through rod casting liquid flow holes 17 and inverted tooth-shaped annular groove surfaces 18 are arranged on the release end, the rod casting liquid flow holes 17 are respectively arranged at the upper end and the lower end of the annular groove surface 18 and are mutually communicated in the axial direction, and the annular groove surfaces 18 are correspondingly matched with the tooth surfaces in structure; the gun head structure is correspondingly matched with the central water hole; the two centralizing mechanisms 4 are respectively arranged at two ends of the rod throwing main body 3, and the spherical leather bag 16 is arranged between the two centralizing mechanisms 4.
Regarding the support nipple: as shown in fig. 4, the device comprises a main rod body 6 in a circular rod shape, wherein the upper end of the main rod body 6 is provided with an upper threaded connection structure which is in fit connection with the lower internal thread of the release main body 1; the lower end of the main rod body 6 is provided with a lower threaded connection structure (which may be specifically an internal thread). The main rod body 6 is embedded with a cylindrical hanging block 7 which can freely rotate relative to the main rod body 6, the hanging block 7 adopts a split structure, the outer diameter D of the hanging block is larger than the maximum outer diameter of the main rod body 6, six well liquid diversion holes which are communicated with the upper end face and the lower end face are axially formed in the hanging block 7 and are used for conducting underground drilling liquid flow, and the upper end face and the lower end face of the hanging block 7 are conical hanging surfaces.
With respect to the drill suspension sub 8: as shown in fig. 5, the body is in a cylindrical structure, the upper end of the body is provided with an internal thread I matched with a drilling tool drill rod 15, the lower end of the body is provided with an external thread I connected with an instrument hanging nipple 5, a seat cylinder supporting shoulder which is formed by diameter shrinkage and faces upwards is arranged in an internal cylindrical cavity, and the aperture of the cavity in the upper area of the supporting shoulder of the hanging seat cylinder 2 is matched with the outer diameter size of the hanging seat cylinder 2.
With respect to instrument suspension sub 5: as shown in fig. 6, the body is in a cylindrical structure, the upper end of the body is provided with an internal thread II connected with a drilling tool suspension nipple 8, the lower end of the body is provided with an external thread II connected with a TBL drill bit, six support rib columns 9 parallel to the axial direction are uniformly distributed on the circumferential surface of the upper part of the inner cylindrical cavity along the circumference, the top ends of the support rib columns 9 are combined to form a conical support profile surface, and the support profile surface is in support fit with the suspension surface at the lower end of the suspension block 7.
Example 3
Based on embodiments 1-2, the embodiment provides a method for using a rod throwing release device of a downhole drilling tool, which specifically includes the following steps:
s1: the release assembly, the supporting pup joint and the well logging instrument passing through the drill bit are sequentially connected from top to bottom to form a drilling tool instrument string, the drilling tool hanging pup joint 8 and the instrument hanging pup joint 5 are sequentially connected and installed between a drilling tool drill rod 15 and a TBL drill bit, the drilling tool instrument string is put into a drilling tool water hole, as shown in fig. 7, the release main body 1 is kept hung on the hanging seat cylinder 2, and then the hanging seat cylinder 2 is kept to sit and prop in the drilling tool hanging pup joint 8 connected to the drilling tool drill rod 15, so that the drilling tool instrument string is hung on the drilling tool drill rod 15;
at this time, the through-bit logging instrument is accommodated in the drilling tool water hole at the upper part of the TBL drill bit;
S2: the drilling tool drill rod 15 hung with the drilling tool instrument string is delivered into a well until the TBL drill bit reaches the logging position;
s3: removing a traveling block and a large hook connected with a drilling tool drill rod 15, putting a release end of a rod throwing assembly into a drilling tool water hole downwards after drilling is stopped, enabling a gun head structure on a rod throwing main body 3 to be inserted into a central water hole at the upper end of the rod throwing main body 1 by means of self gravity and slurry flow thrust, and enabling a weak point pin 13 between a hook 11 and the rod throwing main body 1 to be sheared off under the impact force of the rod throwing main body 3, enabling outer convex hook teeth on the rod throwing main body 1 to rotate and recycle, loosening hanging connection between the rod throwing main body 1 and a hanging seat cylinder 2, enabling a tooth face of an inverted tooth shape to form fit clamping connection with a tooth face 18 of an inverted tooth shape, enabling the rod throwing main body 3 to be connected into a whole, and enabling a drilling tool instrument string to be hung at the lower end of the rod throwing main body 3;
S4: the drilling tool instrument string connected with the rod throwing main body 3 is separated from the support of the drilling tool suspension nipple 8 and further descends along the drilling tool water hole relative to the drilling tool drill rod 15, as shown in fig. 10, until the suspension block 7 on the support nipple is attached to the support rib column 9 supported in the instrument suspension nipple 5, so that the well logging instrument passing through the drill bit passes through the TBL drill bit and is released at a well logging station in the open hole to be measured;
S5: lifting the drilling tool drill rod 15 to perform logging operation;
In the process, as the hanging block 7 can freely rotate relative to the main rod body 6 of the instrument hanging nipple 5 at the bearing points of the drilling tool instrument string and the drilling tool drill rod 15, the phenomenon that the drilling tool logging instrument rotates along with the drilling tool drill rod 15 in an open hole well to cause damage and influence the logging effect can be effectively prevented;
S6: after logging is completed, the traveling block and the large hook are removed again, the rod main body 3 is clamped and grabbed by a special tool (such as a fisher, a female connector matched with a fishing head structure is arranged on the fisher), and the logging instrument passing through the drill bit is fished out of the water hole of the drilling tool drill rod 15, so that logging operation is completed.
Claims (10)
1. The rod throwing release device of the underground through-bit logging instrument is characterized by comprising a release assembly, a rod throwing assembly, a supporting nipple, a drilling tool hanging nipple (8) and an instrument hanging nipple (5);
The release assembly comprises a release main body (1) and a suspension seat cylinder (2) which is matched and sleeved with the release main body (1), the upper end of the release main body (1) is matched and connected with a drilling tool drill rod (15), a central water hole is formed in the upper part of the release main body (1), a diversion inclined hole (10) communicated with the central water hole is formed in the circumferential outer side surface of the lower end of the release main body (1), and the diversion inclined hole (10) is used for communicating the central water hole to the outside of the release main body (1); on the release main body (1), a hook (11) and a pawl (12) are movably connected, and the hook (11) and the pawl (12) are uniformly distributed along the circumferential section of the release main body (1); the upper part of the hook (11) is provided with a convex hook tooth which can extend out of the outer circumferential surface of the release main body (1) and can be rotationally recovered, and the lower part of the hook (11) is provided with an inward-extending tail wing which can extend out of the inner circumferential surface of the release main body (1) and can be rotationally recovered; one end of the pawl (12) is provided with a tooth surface which is supported into the central water hole through a tension spring (14) and protrudes out of the inner circumferential surface of the release main body (1); a hanging window (20) matched with the hook (11) is arranged on the side wall of the hanging seat cylinder (2);
The rod throwing assembly comprises a rod throwing main body (3) and a centralizing mechanism (4) arranged on the rod throwing main body (3), one end of the rod throwing main body (3) is a salvaging end provided with a fishing head structure, the other end of the rod throwing main body is a releasing end provided with a gun head structure, an annular groove surface (18) matched with a tooth surface is arranged on the releasing end, and the gun head structure is correspondingly matched with a central water hole;
the support nipple comprises a main rod body (6), the upper end of the main rod body (6) is connected with the lower end of the release main body (1) in a matched manner, the lower end of the main rod body (6) is connected with a drill logging instrument in a matched manner, and a hanging block (7) capable of freely rotating along the main rod body (6) is sleeved on the main rod body (6);
the upper end of the drilling tool suspension nipple (8) is connected with a drilling tool drill rod (15) in a matched manner, the lower end of the drilling tool suspension nipple is connected with the upper end of the instrument suspension nipple (5) in a matched manner, a cavity I is formed in the drilling tool suspension nipple, a seat barrel supporting shoulder which is formed by reducing the diameter and faces upwards is arranged at the upper part of the cavity I, and the aperture of the cavity I at the upper part of the seat barrel supporting shoulder is matched with the outer diameter of the suspension seat barrel (2);
The instrument hangs nipple joint (5) lower extreme and TBL drill bit cooperation and is connected, and instrument hangs nipple joint (5) inside formation cavity II, is provided with in the part of cavity II and supports rib post (9), and the top combination of support rib post (9) forms the support profile face, forms the support cooperation between the lower extreme of support profile face and hanging piece (7) and hangs the face.
2. The rod throwing release device of the downhole drilling logging instrument according to claim 1, wherein the movable connection point of the hook (11) is arranged in the middle of the hook (11), and the movable connection point of the pawl (12) is arranged on the end head of the other end of the pawl (12).
3. The apparatus of claim 2, wherein the articulation comprises a hinged connection.
4. A rod casting release device for a downhole logging tool according to claim 3, wherein below the articulation point of the hook (11) a weak point pin (13) is provided which is connected to the release body (1).
5. The rod throwing release device of the downhole drilling logging instrument according to claim 1, wherein rod throwing liquid flow holes (17) are formed in the release end, the rod throwing liquid flow holes (17) are distributed above and below the annular groove surface (18), and the rod throwing liquid flow holes (17) are mutually communicated in the axial direction.
6. The rod throwing release device of the downhole through-bit logging instrument according to claim 1, wherein in the rod throwing assembly, a spherical leather bag (16) is arranged on the rod throwing main body (3), and the diameter of the spherical leather bag (16) is larger than or equal to 2 times of the diameter of the rod throwing main body (3) and smaller than the diameter of a water hole of a drilling tool.
7. The rod throwing release device of the downhole drilling logging instrument according to claim 1, wherein the outer diameter of the hanging block (7) is larger than the maximum outer diameter of the main rod body (6), and the hanging block (7) is axially provided with a well liquid dredging hole penetrating through the upper end face and the lower end face.
8. The rod throwing release device of the downhole drilling logging instrument according to claim 7, wherein the upper end face and the lower end face of the hanging block (7) are conical hanging faces, the supporting rib columns (9) are circumferentially distributed, and the top ends of the supporting rib columns (9) are combined to form conical supporting profile faces; the well liquid dredging holes on the hanging blocks (7) are communicated with the holes between the supporting rib columns (9).
9. A method of using a stick release device of a downhole logging tool according to any of claims 1-8, comprising the steps of:
S1: the release assembly, the support nipple and the well logging instrument passing through the drill bit are sequentially connected from top to bottom to form a drilling tool instrument string, the drilling tool hanging nipple (8) and the instrument hanging nipple (5) are sequentially connected and installed between a drilling tool drill rod (15) and a TBL drill bit, the drilling tool instrument string is put into a drilling tool water hole, and the hanging seat cylinder (2) is kept to be seated in the drilling tool hanging nipple (8) connected to the drilling tool drill rod (15) so that the drilling tool instrument string is hung on the drilling tool drill rod (15);
S2: connecting a drilling machine and starting, and conveying a drilling tool drill rod (15) and a drilling tool instrument string which is connected with the drilling tool drill rod in a hanging manner into the well until the drilling tool drill rod reaches a downhole logging station;
s3: after drilling is stopped, the release end of the rod throwing assembly is downwards thrown into a drilling tool water hole, the rod throwing assembly descends according to self gravity, a gun head structure on a rod throwing main body (3) is inserted into a central water hole at the upper end of a release main body (1), under the pushing action of the rod throwing main body (3), an outer convex hook tooth is rotated and recovered, hanging connection between the release main body (1) and a hanging seat cylinder (2) is loosened, a tooth surface and a ring groove surface (18) form fit and clamping connection, the release main body (1) and the rod throwing main body (3) are connected into a whole, and the lower end of the rod throwing main body (3) is hung;
S4: pre-lifting a drilling tool drill rod (15), and descending the drilling tool instrument string relative to the drilling tool drill rod (15) until a hanging block (7) on the supporting nipple is attached to and supported on a supporting rib column (9) in the instrument hanging nipple (5);
S5: connecting a drilling rod (15) of a drilling machine lifting drilling tool again, and performing logging operation on a target oil well;
S6: after logging operation is completed, the salvaging end of the rod throwing main body (3) is grabbed by utilizing the salvaging device, the drilling tool instrument string is salvaged out of the well, and logging operation of the drilling bit logging instrument is completed.
10. The method of claim 9, wherein in step S2, if the rod throwing assembly is blocked during the descending, the circulating pump is turned on, the drilling fluid flow is controlled to circulate, and the rod throwing assembly is pushed;
In step S4, the mud pump is turned on to pump mud downhole, and the drill string is controlled to run down.
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| US7784552B2 (en) * | 2007-10-03 | 2010-08-31 | Tesco Corporation | Liner drilling method |
| US7926590B2 (en) * | 2007-10-03 | 2011-04-19 | Tesco Corporation | Method of liner drilling and cementing utilizing a concentric inner string |
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| US4635718A (en) * | 1985-07-05 | 1987-01-13 | Thomas Ralph R | Continuous obstruction monitor for well logging tools |
| US4678038A (en) * | 1986-03-07 | 1987-07-07 | Rankin E Edward | Side entry sub well logging apparatus and method |
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