CN220267616U

CN220267616U - Coiled tubing well logging headstall

Info

Publication number: CN220267616U
Application number: CN202321999338.3U
Authority: CN
Inventors: 王晓强; 邵勇; 赵强; 沙玉琢; 张鹏; 余哲
Original assignee: Xi'an Tianqing Lido Technology Co ltd
Current assignee: Xi'an Tianqing Lido Technology Co ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2023-12-29
Anticipated expiration: 2033-07-27

Abstract

The continuous oil pipe well logging headstall comprises an oil pipe connecting mechanism, a circulation control mechanism, a safety release mechanism and an instrument connecting mechanism, wherein the oil pipe connecting mechanism comprises a slip sleeve, a connector and a clamping tile, and the circulation control mechanism comprises a flow guiding sleeve, a flow guiding seat, a circulation connector, a cable sleeve and a check valve; the oil pipe connecting mechanism is utilized to realize reliable connection with the coiled tubing, the circulation control mechanism is used for reasonably setting and dredging the cable channel and the well fluid channel, the power transmission cable is ensured to stably provide power for the electric release device and the underground logging instrument, meanwhile, the underground liquid flow circulation channel of the coiled tubing is established and maintained, the controllable pumping pressure circulation of the drilling fluid is ensured, the process requirements under the production working condition of the coiled tubing can be met, the hydraulic pushing of the logging instrument can be realized, the logging headstock with the dual release function is expanded and applied to the production working condition of the coiled tubing, the application range is widened, the logging effect and the logging efficiency are improved, and the logging precision is ensured.

Description

Coiled tubing well logging headstall

Technical Field

The utility model relates to the field of logging headstall, in particular to a coiled tubing logging headstall.

Background

The well logging headstock is a quick joint tool for connecting a well logging cable and a well logging instrument, is widely applied in the field of oilfield production, and can be used for detachably releasing the well logging instrument when the well logging cable and the well logging instrument are required to be disconnected according to the underground condition or the technological requirement in the well logging process, so that the well logging instrument is protected from being damaged by impact, and the well logging cable is prevented from being broken and dropped. The utility model patent number 2019215702096 discloses an electric release device for a well logging headstock, and particularly discloses a well logging headstock with a double release function, wherein the headstock is provided with a weak point pulling rod and an electric release device, so that the well logging instrument can be released by breaking the weak point pulling rod when the well logging instrument is blocked, the well logging instrument can be further actively released by fusing a meltable metal rod according to the requirements of technical regulations, the use function of the well logging headstock is enriched, and the safety, stability and reliability of the release of the well logging instrument are improved. However, because the headstall adopts a cable traction structure, the logging instrument can only move downwards under the action of self weight and can not acquire boosting power of circulating mud, and therefore, when the headstall is applied to the well condition of a horizontal well and a large-displacement well, the logging instrument is often difficult to reach a logging working position under the action of dead weight, the application range of the logging instrument is greatly limited, and the logging precision is greatly influenced. Therefore, it is necessary to develop a multifunctional logging headstall suitable for the coiled tubing operation environment to meet the oilfield production requirements.

Disclosure of Invention

The purpose of the utility model is that: the continuous oil pipe well logging headstock is provided, the application range of the double-release well logging headstock is expanded, the well logging effect is improved, and the well logging precision is ensured.

A coiled tubing logging headstall, comprising: the device comprises an oil pipe connecting mechanism, a circulation control mechanism, a safety release mechanism and an instrument connecting mechanism, wherein the oil pipe connecting mechanism and the instrument connecting mechanism are respectively arranged at the upper end and the lower end, and the circulation control mechanism and the safety release mechanism are sequentially arranged between the oil pipe connecting mechanism and the instrument connecting mechanism; wherein:

the oil pipe coupling mechanism includes: slip sleeve, connector and clamping tile; the slip sleeve is in threaded connection with the connecting head up and down to form a connecting sleeve, the bore diameter of the inner cavity of the connecting sleeve is correspondingly matched with the outer diameter of the continuous oil pipe, a conical ring groove with the inner diameter continuously increasing from top to bottom is formed in the inner side surface of the slip sleeve, the clamping tiles are arc-shaped sheet bodies, the outer side of the clamping tiles are conical surfaces corresponding to the conical ring groove structure, the inner side of the clamping tiles are cylindrical surfaces with inverted teeth, the connecting heads can limit the cylindrical surfaces, the clamping tiles are matched and embedded in the conical ring groove, and a drill rod connecting structure is arranged at the lower end of the connecting heads; when the connecting sleeve is matched and sleeved on the continuous oil pipe and the slip sheets are embedded in the conical ring grooves, the connecting heads are screwed in, the slip sheets are embedded between the slip sleeves and the continuous oil pipe in an interference fit manner through the interaction of conical surfaces between the slip sleeves and the slip sheets, inverted teeth on the inner cylindrical surface can be meshed with the outer side surface of the continuous oil pipe, the connecting sleeve is fixedly connected on the continuous oil pipe, and the continuous oil pipe can be connected with a logging device and a necessary downhole tool by utilizing the drill rod connecting structure at the lower end of the connecting heads to implement downhole logging operation.

The circulation control mechanism includes: the device comprises a flow guide sleeve, a flow guide seat, a circulating joint, a cable sleeve and a check valve; the guide sleeve and the guide seat are respectively provided with a cable channel and a well liquid channel which are mutually separated, the guide seat is embedded at the lower part of the inner cavity of the guide sleeve in a matched manner, so that the cable channel and the well liquid channel on the guide seat are respectively correspondingly connected and conducted with the cable channel and the well liquid channel on the guide sleeve, the setting and guiding directions of the cable channel and the well liquid channel are adjusted, and the mutual separation between the cable channel and the well liquid channel is always kept; the upper end of the circulating joint is fixedly connected to the lower end of the guide sleeve in a sealing manner, the upper end of the cable sleeve is fixedly connected to the lower end of the guide seat in a sealing manner, so that an axial inner hole of the cable sleeve is connected and communicated with the cable passage, the lower end of the cable sleeve extends into a central shaft hole of the circulating joint and forms sealing fit with the inner side wall of the central shaft hole, the cable passage is communicated with the central shaft hole, an annular space is arranged between the outer side surface of the cable sleeve and the inner side surface of the circulating joint at the upper part of the cable sleeve, the annular space is mutually communicated with the well liquid passage through the guide seat, a through side wall is arranged on the side wall of the circulating joint, and a liquid flow hole communicated with the outside is formed in the annular space, so that a complete downhole liquid flow circulating passage of drilling liquid is established; meanwhile, the check valve is embedded in the well fluid channel in the diversion sleeve, controls the flowing direction of the drilling fluid in the well fluid channel, and performs overflow or blowout protection on the drilling tool.

The safety release mechanism includes: the device comprises a connecting sheath, a mechanical release device, an electrical release device and an intermediate joint, wherein the intermediate joint is connected to the lower end of the connecting sheath, and the mechanical release device and the electrical release device are sequentially arranged in the connecting sheath; the mechanical release device specifically comprises: the device comprises a tension rod, a conveying seat, a weak point tension rod and a center rod, wherein the tension rod is fixedly arranged in a connecting sheath, the conveying seat is connected to the lower end of the tension rod through a steel ball connecting structure capable of being broken, and the lower end of the conveying seat is sequentially connected with the weak point tension rod and the center rod; the electrical release device specifically comprises: the device comprises a pressure bearing shell, a pressure bearing joint, a jaw seat, a jaw lock sleeve, a spring, a limit cylinder, a melting piston assembly and a guide piston assembly, wherein sealing structures are respectively arranged at two ends of the pressure bearing shell, a central rod is in sealing fit with the pressure bearing shell from the upper end, the lower end of the pressure bearing shell is in sealing fit connection with the pressure bearing joint and is further in sealing connection with a middle joint, so that an independent sealing space is formed inside the pressure bearing shell, an insulating base is sleeved outside the jaw seat, the insulating base is arranged at the lower part of the sealing space and is fixedly connected with the pressure bearing joint, the upper end is in overlapping butt joint with the lower end face of the central rod, an annular groove is formed in the middle part of an outer convex circular table surface, 3-6 corresponding combined rings of the jaws are sleeved at the overlapping butt joint position of the jaw seat and the central rod, the lower end is embedded in the annular groove, and an upper flange and a lower flange arranged on the inner side face are respectively embedded in a horizontal annular groove formed on the central rod and the jaw seat, and the middle joint is connected with the central rod in a hanging manner; the lower part outside of jack catch has smooth transition increases the footpath region, and corresponding inboard region with preset certain fit clearance between the jack catch seat, the jack catch lock sleeve suit is in on the center pole, the melting piston assembly with the guide piston assembly connection is installed between jack catch lock sleeve and the insulating base, respectively to the effect of static support and stroke control is played to the jack catch lock sleeve, the spring sets up the upper portion of jack catch lock sleeve, by install on the center pole the spacing section of thick bamboo spacing, to the elastic force is exerted to the jack catch lock sleeve, make jack catch lock sleeve cooperation hoop cover in the upper end of jack catch, with the lower extreme the annular groove is to the spacing cooperation of jack catch, the restriction locking jack catch is to the center pole with the clamping connection of jack catch seat, when the active release logging instrument is needed, utilize the underground control circuit to lead in the electric current to the melting piston assembly, make the melting piston assembly lose to the supporting effect of jack catch lock sleeve, by the spring is installed down the limiting cylinder spacing, to the jack catch lock sleeve is in the annular groove is realized to the lower end the annular groove, the jack catch down the axial displacement of jack catch, the jack catch down the axial displacement is realized to the axial displacement of jack catch down the flange is released.

The instrument connection mechanism comprises: the transition joint and the lower joint are of sleeve-shaped structures, the upper end of the lower joint is fixedly matched and connected with the lower end of the transition joint, an anti-rotation plug is arranged on the end head of the lower end of the transition joint, a drill rod connecting structure is arranged at the lower end of the lower joint, a well logging instrument is connected by the drill rod connecting structure in practical application, and working power is supplied to the well logging instrument through the anti-rotation plug.

The coiled tubing logging headstall preferably further comprises in the circulation control mechanism: the cable taper sleeve and the wire harness fastening sleeve are respectively arranged at the upper end and the lower end of the circulation control mechanism, the cables penetrating through the cable channels are respectively fixed and tightened at the upper end and the lower end, the cables are prevented from being broken at the junction points under stress, and the reliability of power supply of the cables is guaranteed.

The coiled tubing logging tap, preferably the check valve provided in the circulation control mechanism is a hydraulically controlled flap check valve, comprising: the valve seat is matched and embedded in the well fluid channel arranged in the guide sleeve, the valve body is supported by the valve seat and arranged at the upper end of the valve seat, the valve cover can form sealing fit with the valve body, the valve cover is connected and installed on the valve seat in a normally closed state by using a torsion spring, the valve cover is matched and sealed with the valve body to block the well fluid channel in a static state, and in a drilling fluid circulation state, the well fluid pressure can push the valve cover to turn over and open to be communicated with the well fluid channel, so that the normal circulation of drilling fluid is ensured; in order to improve the reliability of the protection against underground overflow or blowout, at least 2 groups of flap check valves are arranged in the diversion sleeve.

The balanced ejector rod is preferably arranged on the pressure-bearing joint, penetrates through the pressure-bearing joint in a sealing fit manner and penetrates through the jaw seat along the central shaft of the jaw seat at the same time, and is embedded in a positioning slot hole formed in the central point of the lower end face of the central rod in a matching manner to center the central rod; meanwhile, a balance hole which enables the tail end of the balance ejector rod to be communicated with the outside is formed in the pressure-bearing joint, so that the balance hole bears underground drilling fluid pressure, the pressure borne by the upper end and the lower end of the center rod is balanced, and the working resistance of the safety release mechanism is reduced.

The utility model provides a coiled tubing logging headstock, is preferably in slip cover the cable sheath with install respectively on the water conservancy diversion cover and prevent changeing the screw, radial locking respectively slip cover with between the connector, the cable sheath with between the tight tie joint, the water conservancy diversion cover with between the connector and the water conservancy diversion cover with cooperation between the circulation connects is connected, simultaneously still set up on the connector and install set screw, can be used to radially strengthen joint strength between connector and the coiled tubing.

The utility model has the beneficial effects that the continuous oil pipe well logging headstock is provided, the reliable connection with the continuous oil pipe is realized by utilizing the oil pipe connecting mechanism, the cable channel and the well fluid channel are reasonably arranged and dredged through the circulation control mechanism, the power transmission cable is ensured to stably provide power for the electric release device and the underground well logging instrument, the underground liquid flow circulation channel of the continuous oil pipe is established and maintained, the controllable pumping pressure circulation of drilling fluid is ensured, the process requirement under the continuous oil pipe production working condition can be met, the hydraulic pushing of the well logging instrument can be realized, in the actual production, the well logging headstock with the double release function can be applied to the continuous oil pipe production working condition, the application range is widened, the well logging effect and the well logging efficiency under the continuous oil pipe production working condition can be further ensured, and the well logging precision can be further ensured.

Drawings

Fig. 1 is a cross-sectional view of a tubing connection mechanism.

Fig. 2 is a cross-sectional view of a cable cone sleeve structure.

Fig. 3 is a front cross-sectional view of the circulation control mechanism.

FIG. 4 is a cross-sectional view taken along section A-A in FIG. 3.

Fig. 5 is a side cross-sectional view of the circulation control mechanism.

FIG. 6 is a cross-sectional view taken along section B-B in FIG. 5.

Fig. 7 is a cross-sectional view of a mechanical release mechanism.

Fig. 8 is a cross-sectional view of the electrical release device.

Fig. 9 is a cross-sectional view of the instrument attachment mechanism.

In the drawings: 1 is a slip sleeve; 2 is a connector; 3 is a card tile; 4 is a guide sleeve; 5 is a diversion seat; 6 is a circulating joint; 7 is a cable sleeve; 8 is a liquid flow hole; 9 is a connecting sheath; 10 is a tension rod; 11 is a conveying seat; 12 is a connecting steel ball; 13 is a steel ball lock sleeve; 14 is a weak point tension bar; 15 is a central rod; 16 bearing shells; 17 is a claw seat; 18 is a claw; 19 is a claw lock sleeve; 20 is a spring; 21 is a limiting cylinder; 22 is a melt piston assembly; 23 is a pilot piston assembly; 24 is an intermediate joint; 25 is an insulating base; 26 is an electric control board; 27 is a valve seat; 28 is a valve body; 29 is a valve cover; 30 is a pressure-bearing joint; 31 is a balance ejector rod; 32 is a balance hole; 33 is a slip pad; 34 is an anti-rotation screw; 35 is a set screw; 36 is a confinement ring; 37 is a circuit sheath; 38 is a protective pup joint; 39 is a split casing; 40 is a coiled tubing; 41 is a tight fitting; 42 is a cable jacket; 43 is a cable taper sleeve; 44 is a cable grommet; 45 is a jujube pit fastening ring, 46 is a wire harness leather bag; 47 is a wire harness pad; 48 is a wire harness fastening sleeve; 49 is a pressure block; 50 is an annular space; 51 is an anti-rotation plug; 52 is a lower joint; 53 is a transition joint.

Detailed Description

Further, the technical scheme of the utility model is specifically described with reference to specific embodiments and attached drawings.

A continuous oil pipe well logging headstall consists of an oil pipe connecting mechanism, a circulation control mechanism, a safety release mechanism and an instrument connecting mechanism.

The oil pipe connecting mechanism is arranged at the uppermost end of the continuous oil pipe logging headstall, and is composed of a slip sleeve 1, a connector 2, a slip sheet 3 and a slip pad 33 as shown in figure 1; the slip sleeve 1 and the connector 2 are in threaded connection to form a connecting sleeve, a conical ring groove is formed in the inner side face of the slip sleeve 1, the slip sheet 3 is a split arc sheet body, the outer side is a conical surface corresponding to the conical ring groove in structure, the inner side is a cylindrical surface with inverted teeth, 2 slip sheets 3 can be embedded in the conical ring groove in a limiting fit manner by the connector 2, an external thread is arranged at the lower end of the connector 2, an anti-rotation screw 34 is arranged on the slip sleeve 1, the slip sleeve 1 is radially locked with the connector 2 in threaded fit connection, a set screw 35 is arranged on the connector 2, the connection strength between the connector 2 and the coiled tubing 40 is radially enhanced, and the connection firmness and reliability of the coiled tubing 40 are improved.

The circulation control mechanism is arranged at the lower part of the oil pipe connecting mechanism, and is composed of a binding joint 41, a cable sheath 42, a guide sleeve 4, a guide seat 5, a circulation joint 6, a cable sleeve 7, a limiting ring 36, a check valve, a cable taper sleeve and a binding wire fastening sleeve, wherein the binding joint 41, the cable sheath 42 and the guide sleeve 4 are in threaded sealing fit connection in sequence up and down, and are connected with the oil pipe connecting mechanism through the threaded fit of the binding joint 41 and the connector 2; a cable taper sleeve consisting of a taper sleeve 43, a backing ring 44 and a date pit fastening ring 45 is arranged in the tightening joint 41; the diversion sleeve 4 and the diversion seat 5 are respectively provided with a cable channel and a well liquid channel which are mutually separated, the circulation joint 6 is in sealing fit threaded connection with the lower end of the diversion sleeve 4, the diversion seat 5 is limited by the circulation joint 6 and is embedded in the lower cavity of the diversion sleeve 4 in a matched manner, the cable channel and the well liquid channel are correspondingly connected and conducted, the cable sleeve 7 is arranged along the central axis of the diversion seat 5, the sealing fit threaded connection is arranged at the lower end of the diversion seat 5, the lower part extends into the central shaft hole of the circulation joint 6 and is in sealing fit with the inner side wall of the central shaft hole, an annular space 50 is arranged between the outer side surface of the upper part and the circulation joint 6, the diversion seat 5 guides and adjusts the offset cable channel in the diversion sleeve 4 to the central axis, the cable sleeve 7 is communicated with the central shaft hole of the circulating joint 6 through an axial inner hole, a wire harness fastening sleeve composed of a wire harness leather bag 46, a wire harness cushion ring 47 and a wire harness fastening sleeve 48 is arranged at the lower end of the cable sleeve 7, the cable taper sleeve and the wire harness fastening sleeve fasten the cable passing through the cable channel at the upper end and the lower end respectively, the diversion seat 5 guides and adjusts the well liquid channel to be communicated with the annular space 50, 4 liquid flow holes 8,2 groups of check valves which are uniformly distributed along the circumference are arranged on the side wall of the circulating joint 6 and are communicated with the outside are inlaid in the well liquid channel in the diversion sleeve 4, the upper end is controlled and limited by the limiting ring 36, the check valves are all hydraulic control turnover plate type check valves composed of a valve seat 27, a valve body 28 and a valve cover 29, anti-rotation screws 34 are respectively arranged at the upper end and the lower end of the diversion sleeve 4, and are respectively and radially locked with the diversion sleeve 4 and the connector 2 and the circulating connector 6 in a threaded fit connection.

The safety release mechanism is arranged at the lower part of the circulation control mechanism, and is composed of a circuit sheath 37, a protection nipple 38, a connecting sheath 9, a mechanical release device, an electrical release device and an intermediate joint 24, wherein the upper end of the connecting sheath 9 is sleeved on the circuit sheath 37 in a sealing fit manner, the lower end of the connecting sheath is in threaded connection with the intermediate joint 39, the safety release mechanism is connected with the circulation control mechanism through the threaded sealing fit of the circuit sheath 37 and the circulation joint 6, the protection nipple 38 is provided with a side opening chamber, is in sealing fit with the circuit sheath 37, is embedded between the circulation joint 6 and the connecting end head of the circuit sheath 37, and the electric control board 26 is arranged in the side opening chamber which is completely sealed; the mechanical release, as shown in fig. 4, comprises: the device comprises a tension rod 10, a conveying seat 11, a connecting steel ball 12, a steel ball lock sleeve 13, a weak point tension rod 14, a center rod 15 and a split protection barrel 39, wherein the tension rod 10 is fixedly connected to the lower end of a circuit protection sleeve 37, the conveying seat 11 is connected to the lower end of the tension rod 10 through being matched with structures of the connecting steel ball 12, the steel ball lock sleeve 13 and the split protection barrel 39, and the lower end of the conveying seat 11 is sequentially connected with the weak point tension rod 14 and the center rod 15 through threads; the electric release device, as shown in fig. 5, is composed of a pressure-bearing housing 16, a pressure-bearing joint 30, a jaw seat 17, a jaw 18, a jaw lock sleeve 19, a spring 20, a limiting cylinder 21, a balance ejector rod 31, a melting piston assembly 22 and a guide piston assembly 23, wherein the pressure-bearing housing 16 is connected with the middle joint 24 through the pressure-bearing joint 30, the center rod 15 extends into a sealing space of the pressure-bearing housing 16, the jaw seat 17 is provided with the balance ejector rod 31 in a matched embedding manner on the center shaft, the upper end face is fixedly connected to the pressure-bearing joint 30 by utilizing the balance ejector rod 31, the center rod 15 is connected with the jaw seat 17 in a clamped manner by utilizing 6 jaws 18, the jaw seat 17, the middle joint 24 and the connecting sleeve 9 can be hung and supported on the center rod 15, the pressure-bearing joint 30 is provided with a balance hole 32 which enables the balance ejector rod 31 to be communicated with the outside, simultaneously, the center rod seat 17 is also sleeved with an insulation base 25, the guide piston assembly 22 is connected with the guide piston assembly 23 in a sealing sleeve, and the guide piston assembly 19 can be locked by utilizing the clamping connection of the 6 jaws 18, and the jaw assembly 19 can be locked by the clamping connection of the guide piston assembly 19, and the guide piston assembly 23 can be locked by the compression sleeve 19, and the compression sleeve 19 can be released by the compression sleeve 19 when the compression sleeve 19 is connected with the center rod 15.

The instrument connection mechanism is disposed at the lower part of the safety release mechanism, as shown in fig. 9, and comprises a transition joint 53, a lower joint 52 and an anti-rotation plug 51, wherein the transition joint 53 is in threaded sealing fit with the intermediate joint 24 and is connected with the safety release mechanism, the upper end of the lower joint 52 is fixedly in fit with the lower end of the transition joint 53, the lower end of the lower joint is provided with a connecting thread, the anti-rotation plug 51 is mounted at the lower end of the transition joint 53, a downhole logging instrument can be connected with the lower joint 52 through threaded fit, and meanwhile, the downhole logging instrument is correspondingly connected with the anti-rotation plug 51 through a matched anti-rotation socket, so as to obtain driving power required by the operation of the logging instrument.

When the coiled tubing production working condition is applied to the coiled tubing logging headstock of the embodiment for logging, firstly, an oil tube connecting mechanism is connected to the end head of a coiled tubing 40 at a wellhead, then a circulation control mechanism, a safety release mechanism and an instrument connecting mechanism are sequentially and sequentially connected, in the connection and installation process, a cable is sequentially and continuously arranged in a water hole of the pipe connecting mechanism and a cable channel of the circulation control mechanism, the cable is fixedly fastened by using a cable taper sleeve and a wire harness fastening sleeve at the upper end and the lower end of the circulation control mechanism, then, the safety release mechanism and the instrument connecting mechanism are connected in a line arrangement mode, an electric control plate 26, a melting piston assembly 22 and an anti-rotation plug 51 are respectively connected in a line mode, a logging instrument is connected to the instrument connecting mechanism, and an anti-rotation socket matched with the connecting instrument is matched and inserted into the anti-rotation plug 51; then, the coiled tubing logging headstock is communicated with the logging instrument connected with the coiled tubing logging headstock, the logging instrument is delivered underground along with the coiled tubing 40 and is delivered to a logging area for logging, when the logging instrument meets the well condition of a horizontal well or a large-displacement well, the delivery pump pressure can be controlled through the wellhead, the logging instrument is pushed to be delivered downwards by using drilling fluid pressure, the efficiency and reliability of logging are improved, when subspecies are blocked in the logging process, the coiled tubing 40 can be pulled up by gradually increasing the pulling force until the weak point pulling rod 14 is broken, the logging instrument is released through a mechanical release device, and when the logging instrument is actively released according to the technological requirement in the operation process, the power supply of the logging instrument underground can be controlled to be interrupted, the connection line with the melting piston assembly 22 is communicated, the logging instrument is actively released through an electrical release device, the logging instrument is protected, and the safety and controllability of the logging operation are improved.

Claims

1. A coiled tubing logging headstall, comprising: a safety release mechanism and an instrument connection mechanism; wherein:

the safety release mechanism includes: the device comprises a connecting sheath (9), a mechanical release device, an electrical release device and an intermediate joint (24), wherein the intermediate joint (24) is connected to the lower end of the connecting sheath (9), and the mechanical release device and the electrical release device are sequentially arranged in the connecting sheath (9); the mechanical release device specifically comprises: the device comprises a tension rod (10), a conveying seat (11), a weak point tension rod (14) and a center rod (15), wherein the tension rod (10) is fixedly arranged in a connecting sheath (9), the conveying seat (11) is connected to the lower end of the tension rod (10) through a steel ball connecting structure capable of being broken, and the lower end of the conveying seat (11) is sequentially connected with the weak point tension rod (14) and the center rod (15); the electrical release device specifically comprises: the sealing structure is respectively arranged at two ends of the pressure-bearing shell (16), the pressure-bearing joint (30), the jaw seat (17), the jaw (18), the jaw lock sleeve (19), the spring (20), the limiting cylinder (21), the melting piston assembly (22) and the guide piston assembly (23), the sealing structure is respectively arranged at two ends of the pressure-bearing shell (16), the center rod (15) extends into the pressure-bearing shell (16) from the upper end in a sealing fit manner, the lower end of the pressure-bearing shell (16) is connected with the pressure-bearing joint (30) in a sealing fit manner and is further connected with the middle joint (24) in a sealing manner, so that an independent sealing space is formed inside the pressure-bearing shell (16), the jaw seat (17) is externally sleeved with an insulating base (25), the insulating base is arranged at the lower part of the sealing space and is fixedly connected with the pressure-bearing joint (30), the upper end is in coincidence joint with the lower end face of the center rod (15), the annular grooves are formed in the middle part of the outer convex circular table, 3-6 jaw (18) are correspondingly combined and sleeved with the jaw seat (17) in the coincidence joint with the center rod (15), the annular grooves are formed in the coincidence joint between the jaw seat (17) and the annular grooves, the annular grooves are formed in the annular grooves, the annular grooves are formed in the annular grooves and the annular grooves (17, the inner grooves are respectively, and the sealing grooves are formed in the sealing grooves, and the sealing grooves are respectively The pressure-bearing joint (30), the middle joint (24) and the connecting sheath (9) are hung and carried on the central rod (15), a smooth transitional diameter increasing area is arranged on the outer side of the lower portion of the claw (18), a fit clearance is preset between the corresponding inner side area and the claw seat (17), the claw lock sleeve (19) is sleeved on the central rod (15), the melting piston assembly (22) and the guide piston assembly (23) are connected and installed between the claw lock sleeve (19) and the insulating base (25), the spring (20) is arranged on the upper portion of the claw lock sleeve (19), the limiting cylinder (21) installed on the central rod (15) limits the position of the claw lock sleeve (19), and elastic acting force is applied to the claw lock sleeve (19), so that the claw lock sleeve (19) is matched with the upper end of the claw (18);

the instrument connection mechanism comprises: the transition joint (53) and the lower joint (52) are of sleeve-shaped structures, the upper end of the lower joint (52) is fixedly matched and connected with the lower end of the transition joint (53), an anti-rotation plug (51) is arranged at the end head of the lower end of the transition joint (53), and a drill rod connecting structure is arranged at the lower end of the lower joint (52);

the device is characterized by further comprising an oil pipe connecting mechanism and a circulating control mechanism, wherein the oil pipe connecting mechanism and the instrument connecting mechanism are respectively arranged at the upper end and the lower end, and the circulating control mechanism and the safety release mechanism are sequentially arranged between the oil pipe connecting mechanism and the instrument connecting mechanism; wherein:

the oil pipe coupling mechanism includes: the slip sleeve (1), the connector (2) and the slip sheets (3); the slip sleeve (1) is in threaded connection with the connector (2) up and down to form a connecting sleeve, the bore diameter of the inner cavity of the connecting sleeve is correspondingly matched with the diameter of the outer side of the continuous oil pipe (40), a conical ring groove with the inner diameter continuously increasing from top to bottom is formed in the inner side surface of the slip sleeve (1), the slip piece (3) is an arc-shaped sheet body, the outer side is a conical surface corresponding to the conical ring groove structure, the inner side is a cylindrical surface with inverted teeth, the connector (2) can limit, the connecting sleeve is matched and embedded in the conical ring groove, and a drill rod connecting structure is arranged at the lower end of the connector (2);

the circulation control mechanism includes: the device comprises a flow guiding sleeve (4), a flow guiding seat (5), a circulating joint (6), a cable sleeve (7) and a check valve; the guide sleeve (4) and the guide seat (5) are respectively provided with a cable channel and a well liquid channel which are mutually separated, the guide seat (5) is embedded at the lower part of the inner cavity of the guide sleeve (4) in a matching way, so that the cable channel and the well liquid channel on the guide seat (5) are respectively correspondingly connected and communicated with the cable channel and the well liquid channel on the guide sleeve (4), the setting guide directions of the cable channel and the well liquid channel are adjusted, and the mutual separation between the cable channel and the well liquid channel is always kept; the upper end of the circulating joint (6) is fixedly connected with the lower end of the guide sleeve (4) in a sealing manner, the upper end of the cable sleeve (7) is fixedly connected with the lower end of the guide seat (5) in a sealing manner, an axial inner hole of the cable sleeve (7) is connected and communicated with the cable passage, the lower end of the cable sleeve extends into a central shaft hole of the circulating joint (6) and is in sealing fit with the inner side wall of the central shaft hole, the cable passage is communicated with the central shaft hole, an annular space (50) is arranged between the outer side surface of the cable sleeve (7) and the inner side surface of the circulating joint (6), the annular space (50) is communicated with the well liquid passage through the guide seat (5), a through side wall is arranged on the side wall of the circulating joint (6), and the annular space (50) is enabled to be communicated with the outside through liquid flow hole (8), and the check valve is embedded in the well liquid passage in the guide sleeve (4).

2. A coiled tubing logging headstall according to claim 1, further comprising in said circulation control mechanism: the cable taper sleeve and the wire harness fastening sleeve are respectively arranged at the upper end and the lower end of the circulation control mechanism, and the cable penetrating through the cable channel is respectively fixed and tightened at the upper end and the lower end.

3. A coiled tubing logging headstall according to claim 1 or 2, characterized in that: the check valve provided in the circulation control mechanism is a hydraulically controlled flap check valve, the flap check valve comprising: valve seat (27), valve body (28) and valve gap (29), valve seat (27) cooperation is inlayed in the well liquid passageway that sets up in water conservancy diversion cover (4), valve body (28) are in by valve seat (27) support sets up the upper end of valve seat (27), valve gap (29) can with valve body (28) constitution sealing fit utilizes torsional spring to connect and installs on valve seat (27) with normally closed state, under the static state with valve body (28) cooperation sealing block well liquid passageway, the board-like check valve is in set up 2 groups at least in water conservancy diversion cover (4).

4. A coiled tubing logging headstall according to claim 3, characterized in that: the balance ejector rod (31) is installed on the pressure-bearing joint (30), the balance ejector rod (31) penetrates through the pressure-bearing joint (30) in a sealing fit mode and penetrates through the jaw seat (17) along the central shaft of the jaw seat (17) at the same time, the upper end head is embedded in a positioning slot hole formed in the center point of the lower end face of the center rod (15) in a matching mode, the center rod (15) is centered and positioned, and a balance hole (32) enabling the tail end of the balance ejector rod (31) to be communicated with the outside is formed in the pressure-bearing joint (30).