CN112211613A - Rotary type safe magnetic positioning logging instrument - Google Patents
Rotary type safe magnetic positioning logging instrument Download PDFInfo
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- CN112211613A CN112211613A CN202011109880.8A CN202011109880A CN112211613A CN 112211613 A CN112211613 A CN 112211613A CN 202011109880 A CN202011109880 A CN 202011109880A CN 112211613 A CN112211613 A CN 112211613A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 76
- 239000010959 steel Substances 0.000 claims abstract description 76
- 239000004568 cement Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 25
- 238000013016 damping Methods 0.000 claims description 12
- 229910001369 Brass Inorganic materials 0.000 claims description 7
- 239000010951 brass Substances 0.000 claims description 7
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 229920002545 silicone oil Polymers 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 230000002285 radioactive effect Effects 0.000 description 1
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- 230000008719 thickening Effects 0.000 description 1
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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
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
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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
- E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
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Abstract
The invention relates to a rotary type safe magnetic positioning logging instrument, which is formed by sequentially connecting a bridle assembly, a rotary balance assembly and a magnetic positioning assembly; the bridle head assembly comprises a torpedo spring, a torpedo spring seat, a fishing barrel and a torpedo single taper sleeve; the rotary balance assembly comprises a rotary upper joint, a threaded ring, a wire passing cylinder, a female needle sleeve, a female needle, a single-core sliding ring, a hollow shaft, a rotary fixed joint, a rotary movable joint, a balance shaft cylinder, a balance piston, a balance cylinder, a pressure bearing disc and a single-core connecting seat; the magnetic positioning assembly comprises an upper magnetic steel cylinder, a front magnetic outer cylinder, a coil rack, magnetic steel, a cement resistor, a lower magnetic steel cylinder and an adapter; the invention integrates the functions of the safety headstall, the rotary short-circuit logging instrument and the magnetic positioning logging instrument, and has the advantages of reasonable structure, small length, light weight, safety, reliability and convenient maintenance.
Description
Technical Field
The invention relates to the technical field of petroleum logging, in particular to a rotary type safe magnetic positioning logging instrument.
Background
In petroleum logging, perforation, borehole wall coring and other operations using logging cables, three general logging instruments, namely a safety bridle, a rotary short-circuit logging instrument and a magnetic positioning logging instrument, are required.
The safety headstall has the functions of connecting the cable with the logging instrument, transmitting signals and protecting the logging cable, when the logging instrument is blocked underground and the tension is close to the upper limit value of the safe use of the logging cable, the tension rod in the headstall is broken, and the logging cable is safely logged after being separated from the logging instrument.
The rotatory short circuit logging instrument has the effect of connecting the logging instrument, transmission signal and protection logging cable, at actual logging in-process, the instrument uses combination instrument more in the pit, and a large amount, therefore the logging cable bearing is great, simultaneously the logging cable still need overcome self torsion (the instrument is placed in the pit or is promoted to the ascending, because the lower part of logging instrument cluster is unsettled, consequently can take place to rotate and produce torsion), under the condition that does not have rotatory short circuit, the rotatory torsion of logging instrument cluster can transmit on the logging cable, can twist off the logging cable even when torsion is big, cause serious accident.
The magnetic locator is used for measuring the position of a collar in a borehole and consists of a permanent magnet and a coil which are arranged in a shell made of nonmagnetic materials. As the downhole tool moves through the casing collar in the well, the magnetic field distribution around the magnet is altered due to the thickening of the wall of the casing collar, causing a change in the magnetic flux through the coil to produce an induced electromotive force. The magnitude of the induced current is recorded to obtain a casing coupling curve. The position of a downhole instrument or perforation operation can be accurately determined according to the casing coupling curve and the radioactive logging curve.
At present, conventional safety headstall, rotary short-circuit logging instrument and magnetic positioning logging instrument are single-function logging instruments, and are repeatedly assembled during logging, the total length and weight of the grouped instruments are large, and each well needs to be repeatedly put into the well for dozens of times or even twenty times in perforation operation, so that the workload is large during field assembly, well lowering and well entering operation.
Disclosure of Invention
The invention provides a rotary type safe magnetic positioning logging instrument, which integrates the functions of a safe headstall, a rotary short-circuit logging instrument and a magnetic positioning logging instrument, and has the advantages of reasonable structure, small length, light weight, safety, reliability and convenient maintenance.
In order to achieve the purpose, the invention adopts the following technical scheme:
a rotary safe magnetic positioning logging instrument is formed by sequentially connecting a bridle assembly, a rotary balance assembly and a magnetic positioning assembly; the fishing device comprises a fishing head assembly, a fishing rod assembly and a fishing rod, wherein the fishing head assembly comprises a torpedo spring, a torpedo spring seat, a fishing barrel and a torpedo single-cone sleeve; the rotary balance assembly comprises a rotary upper joint, a threaded ring, a wire passing cylinder, a female needle sleeve, a female needle, a single-core sliding ring, a hollow shaft, a rotary fixed joint, a rotary movable joint, a balance shaft cylinder, a balance piston, a balance cylinder, a pressure bearing disc and a single-core connecting seat; the fishing barrel is connected with the rotary upper joint through a threaded ring, the lengthened sealing connector and the wire passing barrel are arranged in the rotary upper joint, and a female pin sleeve and a female pin are arranged in the wire passing barrel and are used for connecting a logging cable core with a single-core slip ring; the rotary upper joint, the rotary fixed joint and the rotary movable joint are sequentially connected, wherein the rotary fixed joint and the rotary movable joint are in sealed rotary connection, and the hollow shaft penetrates through the connecting bodies of the rotary upper joint, the rotary fixed joint and the rotary movable joint; the single-core slip ring is arranged at one end of the hollow shaft close to the rotary upper joint; the rotary joint is connected with a balance cylinder, a balance shaft cylinder, a bearing disc and a single-core connecting seat are sequentially arranged in the balance cylinder, and the balance shaft cylinder is arranged close to one end of the hollow shaft; a balance piston is arranged in an annular space between the balance cylinder and the balance shaft cylinder, and the balance of internal and external pressure is realized through the axial movement of the balance piston; a sealing plug is arranged on the pressure bearing disc; the magnetic positioning assembly comprises an upper magnetic steel cylinder, a front magnetic outer cylinder, a coil rack, magnetic steel, a cement resistor, a lower magnetic steel cylinder and an adapter; the coil rack is fixed in the front magnetic outer cylinder through an upper magnetic steel cylinder and a lower magnetic steel cylinder which are arranged at two ends of the coil rack, and magnetic steels are respectively arranged in the upper magnetic steel cylinder and the lower magnetic steel cylinder; the upper magnetic steel cylinder is connected with the single-core connecting seat through a single-core connector I; the lower magnetic steel cylinder is connected with the adapter through a single-core connector II, and a cement resistor is arranged in the lower magnetic steel cylinder.
The torpedo spring is connected with the torpedo spring seat through a spring spiral groove, and the torpedo spring seat is connected with the fishing barrel through threads and is locked by a set screw to prevent rotation; the torpedo single cone sleeve and the fishing barrel are positioned by matching with the conical surface, and steel wires of a plurality of logging cables pass through an annular gap of the matching conical surface and are turned back and wound twice when logging is installed; a positioning sleeve is arranged between the torpedo single taper sleeve and the rotary upper joint, a torpedo single taper sleeve spacer is arranged at one end of the positioning sleeve corresponding to the torpedo single taper sleeve, and the torpedo single taper sleeve spacer and the positioning sleeve are positioned through a matching seam allowance; after the bridgehead assembly is assembled, the torpedo single-cone sleeve is axially positioned and fixed through the ejection force of the rotary upper joint and the gravity action of the rotary balance assembly and the magnetic positioning assembly.
A rotation prevention pin is arranged between the overshot and the rotary upper joint; the threaded ring is of a split structure and is combined into a whole through a connecting screw.
The outer side of the rotary upper joint is provided with an oil plug at a position corresponding to the wire barrel, the oil plug is used for injecting silicone oil into the rotary balance assembly, and the oil plug extends into a radial hole of the wire barrel to axially position the wire barrel.
A slip ring pull ring is arranged at the shaft head of the single-core slip ring close to one end of the wire passing cylinder, and a radial screw is arranged at the corresponding end of the wire passing cylinder and used for limiting the rotation of the slip ring pull ring; the single-core slip ring is fixedly connected with the hollow shaft through a screw.
Grooves are formed in the end face and the inner hole of the hollow shaft and used for flowing of silicone oil; a thrust ball bearing is arranged between the hollow shaft and the rotary fixed joint; two ends of the rotary fixed joint are respectively provided with a brass shaft sleeve which is sleeved on the hollow shaft, the outer ends of the brass shaft sleeves are respectively provided with a lip-shaped oil seal, and a sealing ring is arranged between the middle part of the rotary fixed joint and the hollow shaft; the rotary fixed joint is connected with the rotary upper joint through threads, and a rotary fixed sealing disc, a thrust needle bearing and a rotary movable sealing disc are sequentially arranged between the rotary fixed joint and the rotary movable joint; the rotary joint is connected with the hollow shaft through an internal thread and is connected with the balance cylinder through an external thread; one end of the hollow shaft, which is far away from the rotary upper joint, is locked and fixed through a locking nut, and the locking nut is in threaded connection with the rotary upper joint and is locked through a plurality of axial and radial set screws.
Sealing rings are respectively arranged between the balance piston and the balance cylinder and between the balance piston and the balance shaft cylinder; a spring is arranged between the balance shaft cylinder and the balance piston and used for resetting the balance piston under normal pressure.
The pressure bearing disc is connected with the single-core connecting seat through a screw, and the single-core connecting seat and the balance cylinder are positioned and fixed through a spigot and a hole by using a clamp spring; and the first single-core connector and the single-core connecting seat are positioned by a clamp spring through the seam allowance and the hole.
The front magnetic outer cylinder is connected with the balance cylinder through threads, and the upper magnetic steel cylinder and the lower magnetic steel cylinder are respectively connected with the coil rack through threads; a damping pad is arranged between the front magnetic outer cylinder and the upper magnetic steel cylinder, and a snap spring for a hole is arranged between the front magnetic outer cylinder and the lower magnetic steel cylinder; felt pads for damping the magnetic steel are respectively arranged in the upper magnetic steel cylinder and the lower magnetic steel cylinder; the position between the first single-core connector and the upper magnetic steel cylinder, the position between the second single-core connector and the lower magnetic steel cylinder and the position between the second single-core connector and the adapter are positioned by snap springs through rabbets and holes; the single-core connector I and the single-core connector II are both composed of a single-core male socket and a single-core female socket.
And resistance damping pads are respectively arranged at two ends of the cement resistor.
Compared with the prior art, the invention has the beneficial effects that:
1) the rotary type safe magnetic positioning logging instrument is an integrated instrument integrating the functions of a safe headstall, a rotary short-circuit logging instrument and a magnetic positioning logging instrument, and has three functions of logging cable tension load protection, cable winding protection and perforation operation magnetic positioning; the structure is reasonable and compact, the total length and the total weight are effectively reduced, the on-site assembly is not needed during use, and the on-site working strength and the workload are reduced;
2) the steel wire of the logging cable is folded back and wound twice on the torpedo single cone sleeve and is compressed and fixed, and the safe use load of the logging cable during working can be adjusted by the percentage of the wound logging cable steel wire in the total steel wire of the logging cable, so that a conventionally arranged tension bar assembly is omitted, the overall structure is simpler, and the safety is higher;
3) the single-core connector I and the single-core connector II both adopt a quick installation mode, so that field replacement and maintenance operation are facilitated;
4) the whole structure is designed aiming at perforation operation, and vibration reduction components are arranged at all positions of the magnetic positioning assembly; not only the damage of mechanical vibration to the magnetic steel, the upper magnetic steel cylinder and the lower magnetic steel cylinder is avoided, but also a measure for preventing the damage of resistance to impact current to the coil is added.
Drawings
FIG. 1 is a schematic diagram of a rotary safety magnetic positioning tool according to the present invention.
FIG. 2 is a front sectional view of a rotary safety magnetic positioning tool according to the present invention.
FIG. 2a is a partial cross-sectional view of a rotary safety magnetic positioning tool of the present invention, section I.
FIG. 2b is a partial cross-sectional view of a rotary safety magnetic positioning tool of the present invention, section II.
FIG. 2c is a partial cross-sectional view of a rotary safety magnetic positioning tool of the present invention shown in section III.
Fig. 3 is a view a-a in fig. 2 b.
In the figure: 1. the rotary sealing device comprises a torpedo spring 2, a torpedo spring seat 3, a fishing barrel 4, a torpedo single taper sleeve 5, a torpedo taper sleeve spacer 6, a positioning sleeve 7, a sealing ring 8, an anti-rotation pin 9, an extension sealing connector 10, a rotary upper joint 11, a connecting screw 12, a threaded ring 13, a wire passing barrel 14, a female plug bush 15, a female plug 16, an oil plug 17, a slip ring pulling ring 18, a single-core slip ring 19, a hollow shaft 20, a thrust ball bearing 21, a lip-shaped oil seal 22, a brass shaft sleeve 23, a rotary fixed joint 24, a thrust needle bearing 25, a rotary fixed sealing disc 26, a rotary movable joint 27, a rotary movable joint 28, a locking nut 29, a balance shaft barrel 30, a balance piston 31, a balance cylinder 32, a spring 33, a pressure bearing disc 35, a single-core connecting seat 36, a single-core sealing plug male socket 37, a single-core female socket 38, a damping pad 39, an upper 42. Coil rack 43, magnetic steel 44, cement resistor 45, lower magnetic steel cylinder 46, resistance damping pad 47 and adapter
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1, fig. 2, and fig. 2a to fig. 2c, the rotary type safe magnetic positioning logging instrument of the present invention is composed of a bridle assembly, a rotation balancing assembly, and a magnetic positioning assembly, which are connected in sequence; the bridle head assembly comprises a torpedo spring 1, a torpedo spring seat 2, a fishing barrel 3 and a torpedo single taper sleeve 4, wherein the torpedo spring 1, the torpedo spring seat 2 and the fishing barrel 3 are sequentially connected, and the torpedo single taper sleeve 4 is arranged in the fishing barrel 3; the rotary balance assembly comprises a rotary upper joint 10, a threaded ring 12, a wire passing cylinder 13, a female needle sleeve 14, a female needle 15, a single-core sliding ring 18, a hollow shaft 19, a rotary fixed joint 23, a rotary movable joint 27, a balance shaft cylinder 29, a balance piston 30, a balance cylinder 31, a pressure bearing disc 34 and a single-core connecting seat 35; the fishing barrel 3 is connected with a rotary upper joint 10 through a threaded ring 12, a lengthened sealing connector 9 and a wire passing barrel 13 are arranged in the rotary upper joint 10, and a female needle inserting sleeve 14 and a female needle inserting 15 are arranged in the wire passing barrel 13 and are used for connecting a logging cable core with a single-core slip ring 18; the rotary upper joint 10, the rotary fixed joint 23 and the rotary movable joint 27 are sequentially connected, wherein the rotary fixed joint 23 and the rotary movable joint 27 are in sealed rotary connection, and the hollow shaft 19 penetrates through the connecting bodies of the rotary upper joint, the rotary fixed joint and the rotary movable joint; the single-core slip ring 18 is arranged at one end of the hollow shaft 19 close to the rotary upper joint 10; the rotary joint 27 is connected with a balance cylinder 31, a balance shaft cylinder 29, a bearing disc 34 and a single-core connecting seat 35 are sequentially arranged in the balance cylinder 31, wherein the balance shaft cylinder 29 is arranged close to one end of the hollow shaft 19; a balance piston 30 is arranged in an annular space between the balance cylinder 31 and the balance shaft cylinder 29, and the balance of internal and external pressure is realized through the axial movement of the balance piston 30; a sealing plug 33 is arranged on the pressure bearing disc 34; the magnetic positioning component comprises an upper magnetic steel cylinder 39, a front magnetic outer cylinder 41, a coil rack 42, magnetic steel 43, a cement resistor 44, a lower magnetic steel cylinder 45 and an adapter 47; the front magnetic outer cylinder 41 is connected with the balance cylinder 31, the coil frame 42 is fixed in the front magnetic outer cylinder 41 through an upper magnetic steel cylinder 39 and a lower magnetic steel cylinder 45 which are arranged at the two ends of the coil frame, and magnetic steels 43 are respectively arranged in the upper magnetic steel cylinder 39 and the lower magnetic steel cylinder 45; the upper magnetic steel cylinder 39 is connected with the single-core connecting seat 35 through a single-core connector I; the lower magnetic steel cylinder 45 is connected with the adapter 47 through a single-core connector II, and a cement resistor 44 is arranged in the lower magnetic steel cylinder 45.
The torpedo spring 1 is connected with the torpedo spring seat 2 through a spring spiral groove, and the torpedo spring seat 2 is connected with the fishing barrel 3 through threads and is locked by a set screw to prevent rotation; the torpedo single cone sleeve 4 and the overshot 3 are positioned by matching with a conical surface, and steel wires of a plurality of logging cables pass through an annular gap of the matching conical surface and are turned back and wound twice when logging is installed; a positioning sleeve 6 is arranged between the torpedo single taper sleeve 4 and the rotary upper joint 10, a torpedo single taper sleeve spacer 5 is arranged at one end of the positioning sleeve 6 corresponding to the torpedo single taper sleeve 4, and the torpedo single taper sleeve spacer 5 and the positioning sleeve 6 are positioned through a matching seam allowance; after the bridgehead assembly is assembled, the torpedo single taper sleeve 4 is axially positioned and fixed through the ejection force of the rotary upper joint 10 and the gravity action of the rotary balance assembly and the magnetic positioning assembly.
A rotation prevention pin 8 is arranged between the overshot 3 and the rotary upper joint 10; the threaded ring 12 is of a split structure and is combined into a whole through a connecting screw 11.
An oil plug 16 is arranged on the outer side of the rotary upper joint 10 corresponding to the wire passing cylinder 13 and used for injecting silicone oil into the rotary balance assembly, and the oil plug extends into a radial hole of the wire passing cylinder 13 and plays a role in axial positioning on the wire passing cylinder 13.
A slip ring pull ring 17 is arranged at the shaft head of the single-core slip ring 18 close to one end of the wire passing cylinder 13, and a radial screw is arranged at the corresponding end of the wire passing cylinder 13 and used for limiting the rotation of the slip ring pull ring 17; the single-core slip ring 18 is fixedly connected with the hollow shaft 19 through screws.
Grooves are formed in the end face and the inner hole of the hollow shaft 19 and used for flowing of silicone oil; a thrust ball bearing 20 is arranged between the hollow shaft 19 and the rotary fixed joint 23; two ends of the rotary fixed joint 23 are respectively provided with a brass shaft sleeve 22 which is sleeved on the hollow shaft 19, the outer end of the brass shaft sleeve 22 is respectively provided with a lip-shaped oil seal 21, and a sealing ring 7 is arranged between the middle part of the rotary fixed joint 23 and the hollow shaft 19; the rotary fixed joint 23 is connected with the rotary upper joint 10 through threads, and a rotary fixed sealing disc 25, a thrust needle bearing 24 and a rotary movable sealing disc 26 are sequentially arranged between the rotary fixed joint 23 and the rotary movable joint 27; the rotary joint 27 is connected with the hollow shaft 19 through an internal thread and is connected with the balance cylinder 31 through an external thread; the end of the hollow shaft 19 remote from the rotary top sub 10 is secured by a locking nut 28, the locking nut 28 being screwed to the rotary top sub 10 and being locked by a plurality of axially and radially directed set screws (see fig. 3).
Sealing rings are respectively arranged between the balance piston 30 and the balance cylinder 31 and between the balance piston 30 and the balance shaft cylinder 29; a spring 32 is arranged between the balance shaft cylinder 29 and the balance piston 30 for restoring the balance piston 30 under normal pressure.
The pressure bearing disc 34 is connected with the single-core connecting seat 35 through a screw, and the single-core connecting seat 35 and the balance cylinder 31 are positioned and fixed through a spigot and a hole by using a clamp spring; and the first single-core connector and the single-core connecting seat 35 are positioned by a clamp spring through a seam allowance and a hole.
The front magnetic outer cylinder 41 is connected with the balance cylinder 31 through threads, and the upper magnetic steel cylinder 39 and the lower magnetic steel cylinder 45 are respectively connected with the coil rack 42 through threads; a damping pad 38 is arranged between the front magnetic outer cylinder 41 and the upper magnetic steel cylinder 39, and a hole snap spring is arranged between the front magnetic outer cylinder 41 and the lower magnetic steel cylinder 45; felt pads 40 for damping the magnetic steel 43 are respectively arranged in the upper magnetic steel cylinder 39 and the lower magnetic steel cylinder 45; the positions between the first single-core connector and the upper magnetic steel cylinder 39, between the second single-core connector and the lower magnetic steel cylinder 45 and between the second single-core connector and the adapter 47 are positioned by snap springs through rabbets and holes; the single-core connector I and the single-core connector II are both composed of a single-core male socket 36 and a single-core female socket 37.
And resistance damping pads 46 are respectively arranged at two ends of the cement resistor 44.
The anti-rotation pin is arranged between the overshot and the rotary upper joint and is used for preventing the relative rotation between the overshot and the rotary upper joint from twisting off the cable core of the logging cable. And the sealing plug, the single-core connector I and the single-core connector II are used for connecting the slip ring lead and the magnetic positioning coil. The cement resistor is used for protecting the front magnetic coil against the impact of instant current, and the resistance damping pad is used for preventing the damage of impact vibration to the cement resistor.
According to the rotary type safe magnetic positioning logging instrument, the main body parts are all made of titanium alloy materials, the total length of the instrument is 40% of that of a conventional combined instrument, and the weight of the instrument is only 30% of that of the conventional combined instrument. (the length of the conventional bridle is 957mm, the weight of the conventional bridle is 17.2kg, the length of the conventional rotary short-circuit logging instrument is 1536mm, the weight of the conventional rotary short-circuit logging instrument is 26.8kg, the length of the conventional magnetic positioning logging instrument is 720mm, and the weight of the conventional magnetic positioning logging instrument is 18.4 kg; and the length of the integrated rotary type safe magnetic positioning logging instrument is 1320mm, and the weight of the integrated rotary type safe magnetic positioning logging instrument is 23.6 kg). Not only reduces the working strength of perforation operation, but also improves the working efficiency on site and reduces the maintenance cost of equipment.
When the rotary type safe magnetic positioning logging instrument is maintained, the single cone sleeve and the sealing plug of the torpedo can be replaced only by rotating the threaded ring and detaching the fishing barrel. Because the logging cable is fixed by the mode that the steel wire of the logging cable is folded back and wound twice and is compressed on the single cone sleeve of the torpedo, the phenomenon that the steel wire slides and is drawn out due to the fact that the pressing force is not uniform when the traditional three-cone sleeve is adopted can be effectively prevented, and the logging operation is safer and more reliable.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A rotary safe magnetic positioning logging instrument is characterized by being formed by sequentially connecting a bridle assembly, a rotary balance assembly and a magnetic positioning assembly; the fishing device comprises a fishing head assembly, a fishing rod assembly and a fishing rod, wherein the fishing head assembly comprises a torpedo spring, a torpedo spring seat, a fishing barrel and a torpedo single-cone sleeve; the rotary balance assembly comprises a rotary upper joint, a threaded ring, a wire passing cylinder, a female needle sleeve, a female needle, a single-core sliding ring, a hollow shaft, a rotary fixed joint, a rotary movable joint, a balance shaft cylinder, a balance piston, a balance cylinder, a pressure bearing disc and a single-core connecting seat; the fishing barrel is connected with the rotary upper joint through a threaded ring, the lengthened sealing connector and the wire passing barrel are arranged in the rotary upper joint, and a female pin sleeve and a female pin are arranged in the wire passing barrel and are used for connecting a logging cable core with a single-core slip ring; the rotary upper joint, the rotary fixed joint and the rotary movable joint are sequentially connected, wherein the rotary fixed joint and the rotary movable joint are in sealed rotary connection, and the hollow shaft penetrates through the connecting bodies of the rotary upper joint, the rotary fixed joint and the rotary movable joint; the single-core slip ring is arranged at one end of the hollow shaft close to the rotary upper joint; the rotary joint is connected with a balance cylinder, a balance shaft cylinder, a bearing disc and a single-core connecting seat are sequentially arranged in the balance cylinder, and the balance shaft cylinder is arranged close to one end of the hollow shaft; a balance piston is arranged in an annular space between the balance cylinder and the balance shaft cylinder, and the balance of internal and external pressure is realized through the axial movement of the balance piston; a sealing plug is arranged on the pressure bearing disc; the magnetic positioning assembly comprises an upper magnetic steel cylinder, a front magnetic outer cylinder, a coil rack, magnetic steel, a cement resistor, a lower magnetic steel cylinder and an adapter; the coil rack is fixed in the front magnetic outer cylinder through an upper magnetic steel cylinder and a lower magnetic steel cylinder which are arranged at two ends of the coil rack, and magnetic steels are respectively arranged in the upper magnetic steel cylinder and the lower magnetic steel cylinder; the upper magnetic steel cylinder is connected with the single-core connecting seat through a single-core connector I; the lower magnetic steel cylinder is connected with the adapter through a single-core connector II, and a cement resistor is arranged in the lower magnetic steel cylinder.
2. A rotary safety magnetic positioning logging tool as claimed in claim 1, wherein the torpedo spring is connected with the torpedo spring seat through a spring spiral groove, the torpedo spring seat is connected with the overshot through a screw thread and is locked against rotation by a set screw; the torpedo single cone sleeve and the fishing barrel are positioned by matching with the conical surface, and steel wires of a plurality of logging cables pass through an annular gap of the matching conical surface and are turned back and wound twice when logging is installed; a positioning sleeve is arranged between the torpedo single taper sleeve and the rotary upper joint, a torpedo single taper sleeve spacer is arranged at one end of the positioning sleeve corresponding to the torpedo single taper sleeve, and the torpedo single taper sleeve spacer and the positioning sleeve are positioned through a matching seam allowance; after the bridgehead assembly is assembled, the torpedo single-cone sleeve is axially positioned and fixed through the ejection force of the rotary upper joint and the gravity action of the rotary balance assembly and the magnetic positioning assembly.
3. A rotary safety magnetic positioning logging tool as claimed in claim 1, wherein a rotation prevention pin is provided between the overshot and the rotary upper joint; the threaded ring is of a split structure and is combined into a whole through a connecting screw.
4. The rotary type safe magnetic positioning logging instrument as claimed in claim 1, wherein an oil plug is arranged at the position corresponding to the wire passing cylinder on the outer side of the rotary upper joint and used for injecting silicone oil into the rotary balance assembly, and the oil plug extends into a radial hole of the wire passing cylinder to axially position the wire passing cylinder.
5. The rotary type safe magnetic positioning logging instrument as claimed in claim 1, wherein the single-core slip ring is provided with a slip ring pull ring at a shaft head near one end of the wire passing cylinder, and the corresponding end of the wire passing cylinder is provided with a radial screw for limiting the rotation of the slip ring pull ring; the single-core slip ring is fixedly connected with the hollow shaft through a screw.
6. The rotary safety magnetic positioning logging tool of claim 1, wherein the end face and the inner bore of the hollow shaft are grooved for silicone oil flow; a thrust ball bearing is arranged between the hollow shaft and the rotary fixed joint; two ends of the rotary fixed joint are respectively provided with a brass shaft sleeve which is sleeved on the hollow shaft, the outer ends of the brass shaft sleeves are respectively provided with a lip-shaped oil seal, and a sealing ring is arranged between the middle part of the rotary fixed joint and the hollow shaft; the rotary fixed joint is connected with the rotary upper joint through threads, and a rotary fixed sealing disc, a thrust needle bearing and a rotary movable sealing disc are sequentially arranged between the rotary fixed joint and the rotary movable joint; the rotary joint is connected with the hollow shaft through an internal thread and is connected with the balance cylinder through an external thread; one end of the hollow shaft, which is far away from the rotary upper joint, is locked and fixed through a locking nut, and the locking nut is in threaded connection with the rotary upper joint and is locked through a plurality of axial and radial set screws.
7. The rotary safety magnetic positioning logging instrument of claim 1, wherein sealing rings are respectively arranged between the balance piston and the balance cylinder and between the balance piston and the balance shaft cylinder; a spring is arranged between the balance shaft cylinder and the balance piston and used for resetting the balance piston under normal pressure.
8. The rotary type safe magnetic positioning logging instrument as claimed in claim 1, wherein the bearing disc is connected with the single core connecting seat through a screw, and the single core connecting seat and the balance cylinder are positioned and fixed through a spigot and a hole by a clamp spring; and the first single-core connector and the single-core connecting seat are positioned by a clamp spring through the seam allowance and the hole.
9. The rotary safety magnetic positioning logging instrument of claim 1, wherein the front magnetic outer cylinder is connected with the balance cylinder through threads, and the upper magnetic steel cylinder and the lower magnetic steel cylinder are respectively connected with the coil rack through threads; a damping pad is arranged between the front magnetic outer cylinder and the upper magnetic steel cylinder, and a snap spring for a hole is arranged between the front magnetic outer cylinder and the lower magnetic steel cylinder; felt pads for damping the magnetic steel are respectively arranged in the upper magnetic steel cylinder and the lower magnetic steel cylinder; the position between the first single-core connector and the upper magnetic steel cylinder, the position between the second single-core connector and the lower magnetic steel cylinder and the position between the second single-core connector and the adapter are positioned by snap springs through rabbets and holes; the single-core connector I and the single-core connector II are both composed of a single-core male socket and a single-core female socket.
10. A rotary safety magnetic positioning logging tool as claimed in claim 1, wherein resistive damping pads are provided at each end of the cement resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011109880.8A CN112211613A (en) | 2020-10-16 | 2020-10-16 | Rotary type safe magnetic positioning logging instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011109880.8A CN112211613A (en) | 2020-10-16 | 2020-10-16 | Rotary type safe magnetic positioning logging instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112211613A true CN112211613A (en) | 2021-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011109880.8A Pending CN112211613A (en) | 2020-10-16 | 2020-10-16 | Rotary type safe magnetic positioning logging instrument |
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| Country | Link |
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| CN (1) | CN112211613A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293982A (en) * | 2022-03-08 | 2022-04-08 | 智慧猫(东营)智能科技有限公司 | Logging-while-drilling instrument provided with runner conversion connecting piece |
-
2020
- 2020-10-16 CN CN202011109880.8A patent/CN112211613A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293982A (en) * | 2022-03-08 | 2022-04-08 | 智慧猫(东营)智能科技有限公司 | Logging-while-drilling instrument provided with runner conversion connecting piece |
| CN114293982B (en) * | 2022-03-08 | 2022-05-17 | 智慧猫(东营)智能科技有限公司 | Logging-while-drilling instrument provided with runner conversion connecting piece |
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