CN110454148B - Coiled tubing logging instrument with circulation channel - Google Patents
Coiled tubing logging instrument with circulation channel Download PDFInfo
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- CN110454148B CN110454148B CN201910726098.1A CN201910726098A CN110454148B CN 110454148 B CN110454148 B CN 110454148B CN 201910726098 A CN201910726098 A CN 201910726098A CN 110454148 B CN110454148 B CN 110454148B
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- 230000007246 mechanism Effects 0.000 claims abstract description 155
- 238000007789 sealing Methods 0.000 claims abstract description 54
- 239000003921 oil Substances 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 15
- 230000002265 prevention Effects 0.000 claims description 13
- 239000010687 lubricating oil Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 description 7
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
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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
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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
- E21B47/06—Measuring temperature or pressure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
- H01R13/582—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable the cable being clamped between assembled parts of the housing
- H01R13/5825—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable the cable being clamped between assembled parts of the housing the means comprising additional parts captured between housing parts and cable
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
- H01R13/59—Threaded ferrule or bolt operating in a direction parallel to the cable or wire
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R35/00—Flexible or turnable line connectors, i.e. the rotation angle being limited
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G11/00—Arrangements of electric cables or lines between relatively-movable parts
- H02G11/02—Arrangements of electric cables or lines between relatively-movable parts using take-up reel or drum
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a coiled tubing logging instrument with a circulation channel, which comprises an upper connecting joint, a middle outer cylinder, a connecting outer cylinder, an external cable, an internal cable, a shell, a cable rotary sealing connecting mechanism, an anti-backflow mechanism, a mechanical ball throwing releasing mechanism, a measuring mechanism, an electric releasing mechanism, a connector and a lower connecting joint, wherein the upper connecting joint, the middle outer cylinder, the connecting outer cylinder, the anti-backflow mechanism, the mechanical ball throwing releasing mechanism, the measuring mechanism, the electric releasing mechanism, the connector and the lower connecting joint are sequentially and fixedly connected; the shell is respectively matched with the measuring mechanism, the electric release mechanism and the connector to form an annular flow channel; the inner cable is connected with a cable rotary sealing connecting mechanism fixed in the connecting outer cylinder, and two ends of the outer cable are respectively connected with the cable rotary sealing connecting mechanism and the measuring mechanism. The invention can prevent the internal cable from twisting and knotting or twisting off, can simultaneously acquire various logging data and transmit the logging data back in real time, and can separate the logging data from the coiled tubing on the ground control instrument.
Description
Technical Field
The invention belongs to the technical field of well logging, and particularly relates to a coiled tubing well logging instrument with a circulation channel.
Background
The coiled tubing operation technology is a comprehensive technology relating to the integrated operation of oil-gas field development perforation, fracturing reformation, well workover, well completion and well logging. At present, a cable belt logging instrument carries out logging, and due to the fact that the well depth, the horizontal section is long, and the well track is complex, a conventional cable is often difficult to be lowered to the required operation well depth, and logging operation can be achieved only by penetrating the cable through a coiled tubing. Through penetrating the logging cable in the coiled tubing, be connected with real-time supervision logging instrument in the pit, data such as can effectively real-time supervision underground stratum, pit shaft, atress know the real condition in the pit effectively, avoid mistake and invalid operation, can deal with various unusual change condition better, effectively reduce construction safety risk, improve construction operating efficiency.
At present, the logging and underground data monitoring adopt a cable connection mode, online real-time monitoring cannot be realized, the acquisition of each data can be normally carried out only by a special short section, and the more the data is acquired, the longer the instrument length is, and the problem of difficulty in transportation and use exists. And the internal cable connection mode fixes the dead plate, so that the fracture accident is easy to happen, the well logging success rate is reduced, and the well logging cost is also improved. In addition, the coiled tubing cannot be smoothly lifted because the lower instrument or equipment cannot be effectively released on the ground when being blocked.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a coiled tubing logging instrument with a circulation channel, which has compact size, safety and good use, can perform liquid circulation operation in the coiled tubing operation process, has the functions of preventing internal cables from being twisted and knotted or twisted off, simultaneously acquires various logging data and transmits back in real time, and has the function of controlling the instrument to be separated from the coiled tubing on the ground when the instrument is blocked.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a take circulating channel's coiled tubing logging instrument which characterized in that: the device comprises an upper connecting joint, a middle outer cylinder, a connecting outer cylinder, an external cable, an internal cable, a shell, a cable rotary sealing connecting mechanism, an anti-backflow mechanism, a mechanical pitching releasing mechanism, a measuring mechanism, an electric releasing mechanism, a connector and a lower connecting joint, wherein the upper connecting joint, the middle outer cylinder, the connecting outer cylinder, the anti-backflow mechanism, the mechanical pitching releasing mechanism, the measuring mechanism, the electric releasing mechanism, the connector and the lower connecting joint are sequentially and fixedly connected; the two ends of the shell are respectively fixed on the measuring mechanism and the connecting head, and the shell is respectively matched with the measuring mechanism, the electric release mechanism and the connecting head to form an annular flow channel; the connector comprises an upper connecting groove and a lower connecting groove which are not communicated, the inner cavities of the upper connecting joint, the middle outer cylinder, the connecting outer cylinder, the backflow prevention mechanism and the mechanical ball throwing release mechanism are communicated, one end of the annular flow passage is communicated with the inner cavity of the mechanical ball throwing release mechanism, the other end of the annular flow passage is communicated with the inner cavity of the lower connecting joint through the lower connecting groove, and the measuring mechanism, the electric release mechanism and the upper connecting groove are not communicated with the annular flow passage; the cable rotary sealing connecting mechanism is fixed in the connecting outer barrel through the backflow preventing mechanism, the inner cable enters through the upper connecting joint and is connected with the cable rotary sealing connecting mechanism, the outer cable is located between the logging instrument and the well wall, and two ends of the outer cable are connected with the cable rotary sealing connecting mechanism and the measuring mechanism respectively.
The upper connecting joint comprises a connecting section and an adjusting section, the adjusting section is fixed in the middle outer barrel in a threaded mode, and the connecting section is fixedly connected with the middle outer barrel through the adjusting section.
The cable rotary sealing connecting mechanism comprises an upper connector A, a cable fixing component, a rotary conductive component, a rotary upper sleeve, a rotary lower sleeve, a bearing, a conductive contact pin A, a conductive contact pin B, a conductive contact pin C and a lower connector A, wherein the rotary conductive component comprises a connecting sleeve, an insulating sleeve and a rotary conductive connector A, and the rotary conductive connector A is fixed in the connecting sleeve through the insulating sleeve; the cable fixing component is fixed at the upper end of the upper connector A, the rotary upper sleeve is fixed at the lower end of the upper connector A through a connecting sleeve, and the rotary lower sleeve is movably connected with the rotary upper sleeve; the upper end of the lower joint A penetrates through the rotary lower sleeve and is movably arranged in the rotary upper sleeve, the bearing is arranged between the lower joint and the rotary upper sleeve, the lower end of the lower joint A is fixedly connected with the anti-backflow mechanism, and the conductive contact pin C is fixed at the lower end of the lower joint A; the lower end of the conductive contact pin A is arranged in the rotary conductive connector A, and the upper end of the conductive contact pin A is positioned in the upper connector A and is used for being connected with an internal cable; the upper end of the conductive contact pin B is arranged in the rotary conductive connector A, the lower end of the conductive contact pin B movably extends into the lower connector A and is connected with the conductive contact pin C through a connecting cable, and the conductive contact pin C is connected with the measuring mechanism through an external cable.
A limiting step is arranged in the rotary upper sleeve, an annular limiting table is fixedly arranged at the upper end of the lower joint A, and the upper end of the lower joint A is arranged in the rotary upper sleeve through the annular limiting table and the limiting step; the bearing sets up respectively in the top and the below of annular spacing platform.
The cable fixing assembly comprises a fixing head, a date core cone and a locking cap, wherein the fixing head, the date core cone and the locking cap are all provided with a central through hole, a stretching section is arranged on the fixing head, the stretching section of the fixing head is fixed in the upper connector A in a sealing mode, the date core cone is located in the fixing head, the locking cap is fixed in the stretching section in a threaded mode, and the date core cone and the locking cap are matched to fix the cable.
And a sealing rubber sleeve is fixedly arranged at the joint of the conductive contact pin A and the internal cable.
The lower end of the rotary lower sleeve is provided with a balance cavity A for containing balance oil and a balance hole communicated with the balance cavity A.
The connecting sleeve is provided with a ring platform, and the upper joint A and the rotary upper sleeve are respectively fixed above and below the ring platform in a sealing manner.
And the connecting sleeve and the rotary lower sleeve are both provided with lubricating oil holes with oil plugs.
The rotary lower sleeve is movably sleeved on the rotary upper sleeve, and a sealing ring and a limiting part are arranged between the rotary lower sleeve and the rotary upper sleeve.
A sealing ring is arranged between the connecting sleeve and the conductive contact pin A, a sealing ring is arranged between the rotary lower sleeve and the lower connector, and a sealing ring is arranged between the lower connector A and the conductive contact pin B.
The backflow prevention mechanism comprises a connecting cylinder and a one-way valve, two ends of the connecting cylinder are fixedly connected with the connecting outer cylinder and the mechanical ball throwing releasing mechanism respectively, the one-way valve is fixed at the lower end of the connecting cylinder, the upper end of the connecting cylinder is provided with an eccentric big hole and an eccentric small hole, axes of which are parallel, respectively, and the cable rotary sealing connecting mechanism is fixed in the eccentric small hole through threads.
The measuring mechanism comprises an upper joint B, a lower joint B, an electronic joint, an intermediate joint, a pressure-bearing balance joint, a protective joint, a rotary conductive connector B, a data transmission joint, a temperature sensor, a pressure sensor and a tension sensor, wherein the upper joint B, the intermediate joint, the electronic joint, the pressure-bearing balance joint, the protective joint and the lower joint B are sequentially and fixedly connected in a sealing manner; the data transmission joint, the temperature sensor and the pressure sensor are all fixed on the outer surface of the middle solid section, one end of the rotary conductive connector B is connected with an electronic framework in the electronic joint, and the other end of the rotary conductive connector B is positioned in the pressure-bearing balance joint; a balance cavity B for containing balance oil is arranged in the pressure-bearing balance joint, and a balance hole communicated with the balance cavity B is arranged on the surface of the pressure-bearing balance joint; the tension sensor is fixed in the protective joint, and a conductive contact pin D used for being connected with the electric release mechanism is fixedly arranged in the lower joint B; the data transmission joint, the temperature sensor, the pressure sensor, the tension sensor and the conductive contact pin D are all connected with an electronic framework in the electronic section through connecting cables.
And a standby pressure sensor connected with the electronic framework is fixed in the middle joint.
The upper end of the tension sensor is positioned in the pressure-bearing balance joint.
The rotary conductive connector B is movably intersected with the pressure-bearing balance joint, and a sealing ring is arranged between the rotary conductive connector B and the pressure-bearing balance joint.
The upper joint B, the middle joint, the electronic joint, the pressure-bearing balance joint, the protection joint and the lower joint B are sequentially in threaded connection.
The invention has the advantages that:
1. the invention can effectively detect various underground parameters through the measuring mechanism, and return the detected parameters to the ground in real time, and can automatically release the rotating stress of the cable when the cable rotating and sealing connecting mechanism rotates the oil pipe, so that the internal cable cannot be twisted and knotted or twisted off, the possibility of twisting and breaking of the cable is greatly reduced, the success rate of continuous oil pipe well logging and various related projects is improved, and the cost of the continuous oil pipe through cable well logging is reduced. Through the cooperation of the mechanical ball throwing releasing mechanism and the electric releasing mechanism, the instrument can be separated from the coiled tubing at the ground control when the instrument is blocked, and the dual releasing mechanism effectively ensures the smooth lifting of the coiled tubing. Meanwhile, the upper connecting joint, the middle outer cylinder, the connecting outer cylinder, the backflow prevention mechanism, the mechanical ball throwing releasing mechanism, the annular flow channel and the lower connecting joint are communicated, so that liquid can pass through the inside of the whole instrument, and the requirement of liquid circulation operation can be met.
2. The upper connecting joint adopts the structure of the connecting section and the adjusting section, so that the internal cable can be tightened after being fixed, and the cables are prevented from being stacked and knotted.
3. The cable rotary sealing connection mechanism adopts a structure that the rotary lower sleeve is movably connected with the rotary upper sleeve, a structure that the upper end of the lower joint A is movably arranged in the rotary upper sleeve and a structure that the conductive contact pin B is connected with the conductive contact pin B through a cable, and through the matching of the structures, equipment connected with the lower end of the lower joint A can be rotatably connected with the lower end of the rotary upper sleeve, so that the rotary stress of the cable can be automatically released when the oil pipe rotates, the internal cable cannot be twisted and knotted or twisted off, the possibility of torsional fracture of the cable is greatly reduced, the success rate of continuous oil pipe well logging and various related projects is improved, and the cost of the continuous oil pipe for penetrating the cable well logging is reduced. And through the cooperation of the rotary conductive connector A, effective electrification of the lower part measuring mechanism can be ensured when the oil pipe rotates, and the normal work of the lower part measuring mechanism is favorably ensured.
4. The invention is beneficial to the flexibility of rotation between the lower joint A and the rotary upper sleeve through the matching of the limiting step, the annular limiting table and the bearing.
5. According to the invention, through the matching of the fixing head, the date core cone and the locking cap, the armor of the internal cable entering the upper connector A can be fixed, and the stability of the internal cable in the continuous oil pipe is ensured.
6. The invention can seal and fix the connection part of the internal cable and the conductive contact pin A through the sealing rubber sleeve, thereby ensuring the stability of the electric conduction.
7. According to the invention, through the balance cavity A and the balance hole which are arranged on the rotary lower sleeve, the internal and external pressure difference can be automatically balanced while the internal conductive mechanism is isolated from the external well fluid, so that the sealing ring in the cable rotary sealing connection mechanism is always in a non-pressure state, the sealing performance is improved, and the service life is prolonged.
8. The invention is beneficial to improving the connection stability between the cable rotary sealing connection mechanism and the upper joint and the rotary upper sleeve respectively through the ring table.
9. The lubricating oil holes with the oil plugs are formed in the connecting sleeve and the rotary lower sleeve, and lubricating oil can be conveniently and quickly fed into the device through the lubricating oil holes.
10. The invention can effectively prevent the well fluid from flowing back on the premise of ensuring normal sand blasting and well cleaning through the backflow prevention mechanism.
11. The invention integrates the temperature sensor, the pressure sensor and the tension sensor in the measuring mechanism, and the structure of integrating various sensors on one short section leads the structure of the whole instrument to be more simplified and is beneficial to completing the test of various underground parameters at one time. And because the measuring mechanism is connected with the cable rotary sealing connecting mechanism through an external cable, all signal data can be transmitted through one cable, real-time return of data such as underground temperature, pressure, tension and the like is realized, the logging success rate and the construction efficiency are improved, and the device also has the advantages of compact size, comprehensive functions, safety, good use and the like. Simultaneously, each sensor is internally wired, so that the safety is higher.
12. The standby pressure sensor can detect the internal pressure when the instrument is installed in a mode of carrying the liquid passage, can be suitable for various modes, and is more convenient to use.
13. The pressure-bearing balance joint can balance the internal and external pressure difference of the measuring mechanism, and ensure the normal operation of each sensor.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a cable rotary sealing connection mechanism according to the present invention;
FIG. 3 is a schematic structural view of the backflow prevention mechanism of the present invention;
FIG. 4 is a schematic view of the measuring mechanism according to the present invention;
labeled as: 1. the cable connector comprises an upper connector A, 2, a lower connector A, 3, a cable fixing component, 4, a rotary upper sleeve, 5, a rotary lower sleeve, 6, a bearing, 7, a conductive pin A, 8, a conductive pin B, 9, a conductive pin C, 10, an oil plug, 11, a connecting sleeve, 12, an insulating sleeve, 13, a rotary conductive connector A, 14, an annular limiting table, 15, a fixing head, 16, a date core cone, 17, a locking cap, 18, a sealing rubber sleeve, 19, a balance cavity, 20, an upper connecting connector, 21, an intermediate outer cylinder, 22, a connecting outer cylinder, 23, a shell, 24, a cable rotary sealing connecting mechanism, 25, an anti-backflow releasing mechanism, 26, a mechanical ball throwing mechanism, 27, a measuring mechanism, 28, an electric releasing mechanism, 29, a connector, 30, a lower connecting connector, 31, an annular flow passage, 32, an upper connecting groove, 33, a lower connecting groove, 34, a connecting section, 35, an adjusting section, 36, a lower connecting section, a measuring mechanism, The device comprises a connecting cylinder body 37, a one-way valve 38, an eccentric large hole 19, an eccentric small hole 40, conductive pins D, 41, upper connectors B, 42, lower connectors B, 43, an electronic joint 44, an intermediate connector 45, a pressure-bearing balance connector 46, a protection connector 47, rotary conductive connectors B, 48, a data transmission connector 49, a temperature sensor 50, a pressure sensor 51, a tension sensor 52, a standby pressure sensor 53 and a balance cavity B.
Detailed Description
The invention provides a coiled tubing logging instrument with a circulation channel, which comprises an upper connecting joint 20, a middle outer cylinder 21, a connecting outer cylinder 22, an external cable (not shown in the figure), an internal cable (not shown in the figure), a shell 23, a cable rotary sealing connecting mechanism 24, an anti-backflow mechanism 25, a mechanical ball throwing releasing mechanism 26, a measuring mechanism 27, an electric releasing mechanism 28, a connector 29 and a lower connecting joint 30, wherein the upper connecting joint 20, the middle outer cylinder 21, the connecting outer cylinder 22, the anti-backflow mechanism 25, the mechanical ball throwing releasing mechanism 26, the measuring mechanism 27, the electric releasing mechanism 28, the connector 29 and the lower connecting joint 30 are fixedly connected in sequence; the two ends of the shell 23 are respectively fixed on the measuring mechanism 27 and the connector 29, the shell 23 is respectively matched with the measuring mechanism 27, the electric release mechanism 28 and the connector 29 to form an annular flow passage 31, namely after the measuring mechanism 27, the electric release mechanism 28 and the connector 29 are connected into a whole, an annular flow passage 31 is formed by a gap between the whole and the shell 23; the connector 29 comprises an upper connecting groove 32 and a lower connecting groove 33 which are not communicated, the inner cavities of the upper connecting joint 20, the middle outer cylinder 21, the connecting outer cylinder 22, the backflow prevention mechanism 25 and the mechanical pitching release mechanism 26 are communicated, one end of the annular flow passage 31 is communicated with the inner cavity of the mechanical pitching release mechanism 26, the other end of the annular flow passage is communicated with the inner cavity of the lower connecting joint 30 through the lower connecting groove 33, and the measuring mechanism 27, the electric release mechanism 28 and the upper connecting groove 32 are not communicated with the annular flow passage; the cable rotary sealing connecting mechanism 24 is fixed in the connecting outer cylinder 22 through the backflow preventing mechanism 25, the internal cable enters through the upper connecting joint 20 and is connected with the cable rotary sealing connecting mechanism 24, the external cable is located between the logging instrument and the well wall, and two ends of the external cable are respectively connected with the cable rotary sealing connecting mechanism 24 and the measuring mechanism 27.
In the present invention, the upper connection joint 20 has the following structure: the adjusting device comprises a connecting section 34 and an adjusting section 35, wherein the adjusting section 35 is fixed in the middle outer cylinder 21 in a threaded manner, and the connecting section 34 is fixedly connected with the middle outer cylinder 21 through the adjusting section 35. The adjusting section 35 has a certain length, and when the internal cable is connected to the cable rotary sealing connection mechanism 24, the cable margin can be tightened by rotating the adjusting section 35, so that the internal cable is prevented from knotting due to excessive margin.
In the present invention, the cable rotary sealing connection mechanism 24 has the following structure: the rotary conductive connector comprises an upper connector A1, a cable fixing component 3, a rotary conductive component, a rotary upper sleeve 4, a rotary lower sleeve 5, a bearing 6, a conductive pin A7, a conductive pin B8, a conductive pin C9 and a lower connector A2, wherein the rotary conductive component comprises a connecting sleeve 11, an insulating sleeve 12 and a rotary conductive connector A13, and the rotary conductive connector A13 is fixed in the connecting sleeve 11 through the insulating sleeve 12; the cable fixing component 3 is fixed at the upper end of the upper connector A1 and is used for fixing the armor of the inner cable entering the upper connector A1; the rotary upper sleeve 4 is fixed at the lower end of the upper joint A1 through the connecting sleeve 11, that is, the upper end of the rotary upper sleeve 4 is fixedly connected with the lower end of the connecting sleeve 11, and the upper end of the connecting sleeve 11 is fixedly connected with the upper joint A1. Further, a ring platform is arranged on the connecting sleeve 11, and the upper joint A1 and the rotary upper sleeve 4 are respectively fixed above and below the ring platform in a sealing manner; the rotary lower sleeve 5 is movably connected with the rotary upper sleeve 4, preferably, the rotary lower sleeve 5 is movably sleeved on the rotary upper sleeve 4, and a sealing ring and a limiting piece are arranged between the rotary lower sleeve 5 and the rotary upper sleeve 4; lubricating oil holes with oil plugs 10 are formed in the connecting sleeve 11 and the rotary lower sleeve 5, the lubricating oil holes in the connecting sleeve 11 are preferably formed in the ring platform, and lubricating oil can be injected into the mechanism through the lubricating oil holes; the upper end of a lower joint A2 penetrates through a rotary lower sleeve 5 and is movably arranged in the rotary upper sleeve 4, a bearing 6 is arranged between the lower joint and the rotary upper sleeve 4, the lower end of a lower joint A2 is fixedly connected with a backflow prevention mechanism 25, and a conductive contact pin C9 is fixed at the lower end of the lower joint A2; the lower end of the conductive pin A7 is arranged in the rotary conductive connector A13, the upper end of the conductive pin A7 is positioned in the upper connector A1 and is used for being connected with an internal cable, and a sealing rubber sleeve 18 is fixedly arranged at the connection part of the conductive pin A7 and the internal cable; the upper end of the conductive pin B8 is arranged in the rotary conductive connector A13, the lower end of the conductive pin B8 movably extends into the lower connector A2 and is connected with the conductive pin C9 through a connecting cable, and the conductive pin C9 is connected with the measuring mechanism 27 through an external cable.
A limiting step is arranged in the rotary upper sleeve 4, an annular limiting table 14 is fixedly arranged at the upper end of the lower joint A2, and the upper end of the lower joint A2 is arranged in the rotary upper sleeve 4 through the annular limiting table 14 and the limiting step; the number of the bearings 6 is two, and the bearings are respectively arranged above and below the annular limiting table 14, so that the lower joint A2 and the rotary upper sleeve 4 can stably rotate.
The cable fixing component 3 comprises a fixing head 15, a date core cone 16 and a locking cap 17 which are all provided with a central through hole, wherein a stretching section is arranged on the fixing head 15, the stretching section of the fixing head 15 is fixed in an upper joint A1 in a sealing mode, the date core cone 16 is located in the fixing head 15, the locking cap 17 is fixed in the stretching section in a threaded mode, and the date core cone 16 and the locking cap 17 are matched to fix the cable. Specifically, the date core cone 16 is fixed with cable armor, the armor steel wire is arranged outside the date core cone 16, the locking cap 17 is used for arranging the armor steel wire outside the date core cone 16, and the cable core penetrates through the middle of the date core cone 16.
The lower extreme of rotatory lower cover 5 is provided with the balanced chamber 19A that is used for holding balanced oil and with the communicating balanced hole in balanced chamber 19A, holds balanced oil in the balanced chamber 19A, can be with inside electrically conductive mechanism and outside well liquid keep apart the inside and outside differential pressure of automatic balance, make the sealing washer in the rotatory sealed coupling mechanism 24 of cable be in the non-pressure state all the time, improve sealing performance, guarantee the long-life.
A sealing ring is arranged between the connecting sleeve 11 and the conductive contact pin A7, a sealing ring is arranged between the rotary lower sleeve 5 and the lower connector, and a sealing ring is arranged between the lower connector A2 and the conductive contact pin B8.
In the present invention, the structure of the backflow prevention mechanism 25 is: the device comprises a connecting cylinder 36 and a one-way valve 37, wherein two ends of the connecting cylinder 36 are fixedly connected with a connecting outer cylinder 22 and a mechanical pitching release mechanism 26 respectively, the one-way valve 37 is fixed at the lower end of the connecting cylinder 36, the upper end of the connecting cylinder 36 is provided with an eccentric large hole 38 and an eccentric small hole 19 which are parallel to each other in axial lead respectively, the lengths of the eccentric large hole 38 and the eccentric small hole 19 are approximately the same, and a lower connector A2 of a cable rotary sealing connecting mechanism 24 is fixed in the eccentric small hole 19 in a threaded manner.
In the present invention, the measuring mechanism 27 has a structure including: the device comprises an upper joint B41, a lower joint B42, an electronic joint 43, an intermediate joint 44, a pressure-bearing balance joint 45, a protection joint 46, a rotary conductive connector B47, a data transmission joint 48, a temperature sensor 49, a pressure sensor 50 and a tension sensor 51, wherein the upper joint B41, the intermediate joint 44, the electronic joint 43, the pressure-bearing balance joint 45, the protection joint 46 and the lower joint B42 are sequentially and fixedly connected in a sealing manner, the lower joint B42 is fixedly connected with an electric release mechanism 28, the upper joint B41 comprises an upper channel section, a middle solid section and a lower channel section, the upper channel section is fixedly communicated with the mechanical ball-throwing release mechanism 26, the lower channel section, the intermediate joint 44, the electronic joint 43, the pressure-bearing balance joint 45, the protection joint 46 and the lower joint B42 are sequentially communicated with one another, and the middle solid section is provided with a through hole which is respectively communicated with the upper channel section and the annular flow passage 31; the data transmission joint 48, the temperature sensor 49 and the pressure sensor 50 are all fixed on the outer surface of the middle solid section, the data transmission joint 48 is connected with an external cable, one end of the rotary conductive connector B47 is connected with an electronic framework in the electronic joint 43, the other end of the rotary conductive connector B47 is positioned in the pressure-bearing balance joint 45, specifically, the rotary conductive connector B47 is movably intersected with the pressure-bearing balance joint 45, and a sealing ring is arranged between the rotary conductive connector B47 and the pressure-bearing balance joint 45; a balance cavity B53 for containing balance oil is arranged in the pressure-bearing balance joint 45, and a balance hole communicated with the balance cavity B53 is arranged on the surface of the pressure-bearing balance joint 45; the tension sensor 51 is fixed in the protective joint 46, the upper end of the tension sensor 51 is positioned in the pressure-bearing balance joint 45, and a conductive contact pin D40 used for being connected with the electric release mechanism 28 is fixedly arranged in the lower joint B42; the data transmission connector 48, the temperature sensor 49, the pressure sensor 50, the tension sensor 51 and the conductive pin D40 are all connected with an electronic framework in the electronic section 43 through connecting cables. The data collected by the tension sensor 51, the temperature sensor 49 and the pressure sensor 50 are transmitted to the electronic joint 43 through the connecting cable, then the electronic joint 43 transmits the data to the data transmission joint 48 through the connecting cable, and then the measured parameters are transmitted back to the ground in real time through an external cable connected to the data transmission joint 48. The electronic joint 43 and the pressure-bearing balanced joint 45 are conventional in the art, and for example, the electronic joint 43 may adopt the structures of application numbers 201120567356.5 and 201120569472.0, respectively.
A spare pressure sensor 52 connected with the electronic framework is fixed in the middle joint 44, and if the instrument is installed in a mode of carrying a liquid passage, the spare pressure sensor 52 can be used as an internal liquid pressure sensor 50 for detecting the pressure of the annular flow passage 31.
The upper joint B41, the middle joint 44, the electronic joint 43, the pressure-bearing balance joint 45, the protection joint 46 and the lower joint B42 are sequentially in threaded connection, and sealing rings are arranged at the joints of all the parts as required.
In the present invention, the external cable is an armored cable, and is routed along the outer surfaces of the backflow prevention mechanism 25, the mechanical pitching release mechanism 26, and the measurement mechanism 27. Preferably, a wire groove for external cable routing is provided on the outer surface of the backflow prevention mechanism 25, the mechanical pitching release mechanism 26 and the measurement mechanism 27.
In the present invention, a through hole communicated with the annular flow passage 31 is formed on the lower connecting groove 33 of the connector 29, and the annular flow passage 31 is communicated with the lower connecting joint 30 through the through hole and the lower connecting groove 33.
In the present invention, the mechanical ball throwing release mechanism 26 and the electric release mechanism 28 can be directly implemented by the conventional structure in the art, and specifically, the electric release mechanism 28 can be implemented by the electric release of application No. 2010105999998.
The implementation principle of the invention is as follows:
internal cable gets into from last attach fitting 20, get into behind the connection urceolus 22 through middle urceolus 21, it is fixed through cable fixed subassembly 3, interior total cable is fixed the back, its cable core is connected with electrically conductive contact pin A7, then electrically conductive contact pin A7 is connected with electrically conductive contact pin B8 through rotatory electrically conductive connector A13, electrically conductive contact pin B8 is connected with electrically conductive contact pin C9 through connecting cable, electrically conductive contact pin C9 rethread external cable and data transmission connect 48, thereby make the cable communicate with measuring mechanism 27 through rotatory sealed coupling mechanism, upper portion cable signal can introduce smoothly in the lower part equipment like this.
During testing, data detected by the temperature sensor 49, the pressure sensor 50, the tension sensor 51, the standby pressure sensor 52 and the like are uniformly transmitted to the data transmission joint 48 through the electronic joint 43 and then are uniformly transmitted back to the ground through the external cable.
When the oil pipe rotates, the lower joint A2 and the components connected below the lower joint A2 cannot rotate, and the conductive contact pin B8 is movably connected with the lower joint A2, so that the internal cable cannot be twisted and knotted or twisted off, the possibility of twisting and breaking of the cable and the cost of logging by penetrating the cable through the coiled tubing are greatly reduced, and the success rate of logging the coiled tubing and various related projects is improved.
When the instrument connected below the lower connecting joint 30 is blocked, the lower connecting joint 30 can be separated from the connector 29 under the control of electric release to release the instrument at the lower part, so that the continuous oil pipe is smoothly lifted. When the measuring mechanism 27 is blocked, the ball can be thrown from the ground, and the measuring mechanism 27 is released through the mechanical ball throwing release mechanism 26, so that the continuous oil pipe is smoothly lifted.
Claims (10)
1. Coiled tubing logging instrument with circulation channel, its characterized in that: the device comprises an upper connecting joint (20), a middle outer cylinder (21), a connecting outer cylinder (22), an external cable, an internal cable, a shell (23), a cable rotary sealing connecting mechanism (24), an anti-backflow mechanism (25), a mechanical ball-throwing releasing mechanism (26), a measuring mechanism (27), an electric releasing mechanism (28), a connector (29) and a lower connecting joint (30), wherein the upper connecting joint (20), the middle outer cylinder (21), the connecting outer cylinder (22), the anti-backflow mechanism (25), the mechanical ball-throwing releasing mechanism (26), the measuring mechanism (27), the electric releasing mechanism (28), the connector (29) and the lower connecting joint (30) are sequentially and fixedly connected; two ends of the shell (23) are respectively fixed on the measuring mechanism (27) and the connector (29), and the shell (23) is respectively matched with the measuring mechanism (27), the electric release mechanism (28) and the connector (29) to form an annular flow channel (31); the connector (29) comprises an upper connecting groove (32) and a lower connecting groove (33) which are not communicated, inner cavities of the upper connecting joint (20), the middle outer cylinder (21), the connecting outer cylinder (22), the backflow prevention mechanism (25) and the mechanical ball throwing release mechanism (26) are communicated, one end of the annular flow channel (31) is communicated with the inner cavity of the mechanical ball throwing release mechanism (26), the other end of the annular flow channel is communicated with the inner cavity of the lower connecting joint (30) through the lower connecting groove (33), and the measuring mechanism (27), the electric release mechanism (28) and the upper connecting groove (32) are not communicated with the annular flow channel; rotatory sealed coupling mechanism of cable (24) are fixed in connecting urceolus (22) through anti-return mechanism (25), inside cable gets into and is connected with rotatory sealed coupling mechanism of cable (24) through last attach fitting (20), outside cable is located between logging instrument and the wall of a well, and the both ends of outside cable are connected with rotatory sealed coupling mechanism of cable (24) and measuring mechanism (27) respectively.
2. The coiled tubing logging instrument with circulation channel of claim 1, wherein: go up attach fitting (20) including linkage segment (34) and regulation section (35), adjust section (35) threaded fixation in middle urceolus (21), linkage segment (34) are through adjusting section (35) and middle urceolus (21) fixed connection.
3. The coiled tubing logging instrument with circulation channel of claim 1, wherein: the cable rotary sealing connecting mechanism (24) comprises an upper connector A (1), a cable fixing component (3), a rotary conductive component, a rotary upper sleeve (4), a rotary lower sleeve (5), a bearing (6), a conductive contact pin A (7), a conductive contact pin B (8), a conductive contact pin C (9) and a lower connector A (2), the rotary conductive component comprises a connecting sleeve (11), an insulating sleeve (12) and a rotary conductive connector A (13), and the rotary conductive connector A (13) is fixed in the connecting sleeve (11) through the insulating sleeve (12); the cable fixing component (3) is fixed at the upper end of the upper connector A (1), the rotary upper sleeve (4) is fixed at the lower end of the upper connector A (1) through a connecting sleeve (11), and the rotary lower sleeve (5) is movably connected with the rotary upper sleeve (4); the upper end of the lower joint A (2) penetrates through the rotary lower sleeve (5) and is movably arranged in the rotary upper sleeve (4), the bearing (6) is arranged between the lower joint and the rotary upper sleeve (4), the lower end of the lower joint A (2) is fixedly connected with the backflow prevention mechanism (25), and the conductive contact pin C (9) is fixed at the lower end of the lower joint A (2); the lower end of the conductive contact pin A (7) is arranged in the rotary conductive connector A (13), and the upper end of the conductive contact pin A (7) is positioned in the upper connector A (1) and is used for being connected with an internal cable; the upper end of the conductive contact pin B (8) is arranged in the rotary conductive connector A (13), the lower end of the conductive contact pin B (8) movably extends into the lower connector A (2) and is connected with the conductive contact pin C (9) through a connecting cable, and the conductive contact pin C (9) is connected with the measuring mechanism (27) through an external cable.
4. The coiled tubing logging instrument with circulation channel of claim 3, wherein: a limiting step is arranged in the rotary upper sleeve (4), an annular limiting table (14) is fixedly arranged at the upper end of the lower joint A (2), and the upper end of the lower joint A (2) is arranged in the rotary upper sleeve (4) through the annular limiting table (14) and the limiting step; the bearings (6) are respectively arranged above and below the annular limiting table (14).
5. The coiled tubing logging instrument with circulation channel of claim 3, wherein: the cable fixing component (3) comprises a fixing head (15), a date core cone (16) and a locking cap (17) which are all provided with a central through hole, a stretching section is arranged on the fixing head (15), the stretching section of the fixing head (15) is fixed in an upper joint A (1) in a sealing mode, the date core cone (16) is located in the fixing head (15), the locking cap (17) is fixed in the stretching section in a threaded mode, and the date core cone (16) is matched with the locking cap (17) to fix the cable.
6. The coiled tubing logging instrument with circulation channel of claim 3, wherein: the connecting sleeve (11) is provided with a ring platform, and the upper joint A (1) and the rotary upper sleeve (4) are respectively fixed above and below the ring platform in a sealing manner.
7. The coiled tubing logging instrument with circulation channel of claim 6, wherein: and the connecting sleeve (11) and the rotary lower sleeve (5) are both provided with lubricating oil holes with oil plugs (10).
8. The coiled tubing logging instrument with circulation channel of any one of claims 1-7, wherein: the backflow prevention mechanism (25) comprises a connecting cylinder body (36) and a one-way valve (37), two ends of the connecting cylinder body (36) are fixedly connected with the connecting outer cylinder (22) and the mechanical ball throwing release mechanism (26) respectively, the one-way valve (37) is fixed at the lower end of the connecting cylinder body (36), an eccentric large hole (38) and an eccentric small hole (39) with axes parallel are formed in the upper end of the connecting cylinder body (36) respectively, and the cable rotary sealing connecting mechanism (24) is fixed in the eccentric small hole (39) in a threaded mode.
9. The coiled tubing logging instrument with circulation channel of any one of claims 1-7, wherein: the measuring mechanism (27) comprises an upper joint B (41), a lower joint B (42), an electronic joint (43), an intermediate joint (44), a pressure-bearing balance joint (45), a protection joint (46), a rotary conductive connector B (47), a data transmission joint (48), a temperature sensor (49), a pressure sensor (50) and a tension sensor (51), the upper joint B (41), the intermediate joint (44), the electronic joint (43), the pressure-bearing balance joint (45), the protection joint (46) and the lower joint B (42) are sequentially and fixedly connected in a sealing manner, the lower joint B (42) is fixedly connected with an electric release mechanism (28), the upper joint B (41) comprises an upper channel section, a middle solid section and a lower channel section, the upper channel section is fixedly communicated with a mechanical ball-throwing release mechanism (26), the lower channel section, the intermediate joint (44), the electronic joint (43), the pressure-bearing balance joint (45), The protective joint (46) and the lower joint B (42) are communicated with each other in sequence, and the middle solid section is provided with through holes respectively communicated with the upper channel section and the annular flow passage (31); the data transmission joint (48), the temperature sensor (49) and the pressure sensor (50) are all fixed on the outer surface of the middle solid section, one end of the rotary conductive connector B (47) is connected with an electronic framework in the electronic joint (43), and the other end of the rotary conductive connector B is positioned in the pressure-bearing balance joint (45); a balance cavity B (53) for containing balance oil is arranged in the pressure-bearing balance joint (45), and a balance hole communicated with the balance cavity B (53) is arranged on the surface of the pressure-bearing balance joint (45); the tension sensor (51) is fixed in the protective joint (46), and a conductive contact pin D (40) used for being connected with the electric release mechanism (28) is fixedly arranged in the lower joint B (42); the data transmission joint (48), the temperature sensor (49), the pressure sensor (50), the tension sensor (51) and the conductive contact pin D (40) are connected with an electronic framework in the electronic section (43) through connecting cables.
10. The coiled tubing logging instrument with circulation channel of claim 9, wherein: and a standby pressure sensor (52) connected with the electronic framework is fixed in the middle joint (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910726098.1A CN110454148B (en) | 2019-08-07 | 2019-08-07 | Coiled tubing logging instrument with circulation channel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910726098.1A CN110454148B (en) | 2019-08-07 | 2019-08-07 | Coiled tubing logging instrument with circulation channel |
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| CN110454148A CN110454148A (en) | 2019-11-15 |
| CN110454148B true CN110454148B (en) | 2022-03-29 |
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