CN109869111B - Follow-up deviation-adjusting polish rod sealing and liquid-drive blowout prevention integrated device - Google Patents

Abstract

The invention provides a follow-up deviation-adjusting polish rod sealing and liquid-drive blowout prevention integrated device which is applied to wellhead sealing and blowout prevention of oil and gas fields. The device consists of a polished rod sealer, a follow-up offset adjuster, a buckle blowout preventer and a liquid drive power device, wherein the follow-up offset adjuster finishes radial follow-up sliding offset adjustment according to lateral eccentric force when a sucker rod and a wellhead tee joint are eccentric and automatically compensates offset between the polished rod sealer and the sucker rod, and simultaneously forms three-stage nonmetal static seal according to L-shaped sealing rings and double sealing rings, and the polished rod sealer adopts a columnar long box body and forms two-stage nonmetal dynamic seal according to glue injection packing and between a rectangular sealing ring and the sucker rod; the hydraulic drive power device provides power and pushes a left buckle body and a right buckle body of the buckle blowout preventer to perform radial precise buckle sliding blowout prevention operation along a buckle channel of the blowout prevention body through a hydraulic drive rod of the hydraulic drive power device, and meanwhile, the buckle blowout preventer forms nonmetal static seal between the blowout prevention body and the left buckle body and between the buckle body and the right buckle body through the shell seal core.

Description

Follow-up deviation-adjusting polish rod sealing and liquid-drive blowout prevention integrated device

Technical Field

The invention relates to a device for well mouth polish rod sealing and blowout prevention in the field of petroleum engineering, in particular to a polish rod sealing and liquid drive blowout prevention integrated device with radial follow-up sliding deviation adjustment and radial precise buckle sliding blowout prevention.

Background

At present, most of oil and gas wells in China enter a mechanical exploitation stage, exploitation of unconventional gas wells also enter a commercial exploitation stage, equipment for exploiting the oil and gas wells and the unconventional gas wells generally adopts rod exploitation equipment consisting of an oil pumping unit, an oil well pump, a sucker rod pipe and the like, and for the rod exploitation equipment, the performances of a sucker rod seal and a blowout preventer at a wellhead are directly related to the efficiency of the whole rod exploitation system and the yield of oil and gas.

The sealing and blowout prevention technology of the sucker rod at the wellhead of the existing rod mining system can be summarized as follows: 1) the conventional wellhead sealing device has the advantages that the sealing packing of the conventional wellhead sealing device realizes the sealing function by axially pressing the gland, the device is simple in structure and convenient to operate, however, the device has the defects that the device needs to be stopped when the sealing packing is replaced, and a necessary deviation adjusting mechanism is not arranged. 2) Improved generation well head sealing device, its pressure cap passes through the screw thread with its pressure transmission to gland to through gland compression sealing packing, sealing packing produces radial deformation and accomplishes sealedly, when needs change sealing packing, rotate the regulation lead screw and let semi-circular seal compress tightly on the sucker rod, this device has increased for conventional well head sealing device prevents spouting the function, and its defect does not set up necessary tuningout mechanism and righting mechanism, prevent that the structure of spouting the part is complicated, the cost of manufacturing is higher, and need rotate two regulation lead screws simultaneously in the operation construction, and then increase workman's the operation degree of difficulty. 3) Novel well head sealing device, thereby go up the pressure cover and compress tightly the conical seal packing and make it produce radial deformation and reach sealed purpose, simultaneously produce the effort to the rectangle packing through gland down and realize preventing spouting the function, nevertheless discover its defect in the use and choose for use unreasonablely for the shape and the material of sealed packing, the sealed effect of sealed packing is not ideal, the installation and the dismantlement of sealed packing are all inconvenient, it is comparatively simple and the repetitive operation number of times limited to prevent the mechanism design, the misalignment transferring mechanism can not realize on a large scale follow-up centering operation and make the failure rate of sealed packing still higher.

Disclosure of Invention

In order to overcome the defects and shortcomings of the sucker rod sealing and blowout prevention technology at the wellhead of the existing oil-gas well and unconventional gas well sucker rod production system, the invention aims to provide a follow-up deviation-adjusting polished rod sealing and liquid-driven blowout prevention integrated device suitable for wellhead sealing and blowout prevention working conditions. The polish rod sealing and liquid driving blowout prevention integrated device realizes radial follow-up sliding deviation adjustment of the sucker rod at the wellhead, double-stage nonmetal dynamic sealing and radial precise buckle sliding blowout prevention operation by the aid of the glue injection packing, the rectangular sealing ring, the double sealing rings, the L-shaped sealing ring of the follow-up deviation adjuster, the rod sealing core and the shell sealing core of the buckle blowout preventer and power provided by the liquid driving power device.

The invention discloses a follow-up deviation-adjusting polish rod sealing and liquid-driven blowout prevention integrated device, which is used for solving the technical problems and mainly comprises a polish rod sealing device, a follow-up deviation-adjusting device, a buckle blowout preventer and a liquid-driven power device, wherein the polish rod sealing and liquid-driven blowout prevention integrated device is in an axisymmetric structure and is connected with a wellhead tee joint into a whole through a hoop head of the buckle blowout preventer, the polish rod sealing device, the follow-up deviation-adjusting device and the buckle blowout preventer are all revolving bodies and are sequentially and coaxially arranged from top to bottom, and the liquid-driven power device is radially and symmetrically arranged at two side ends of the buckle blowout preventer along a sucker rod and the wellhead tee joint.

The polish rod sealer adopts a columnar long box body and forms two-stage nonmetal dynamic seal with the sucker rod according to the glue injection packing and the rectangular sealing ring, and comprises a sealing box body, a sealing pressure cap, a sealing pressure ring, a sealing lining ring, a glue injection body, a double sealing ring, the rectangular sealing ring and the glue injection packing.

The sealing box body adopts a semi-closed long round box body, the sealing pressing cap adopts a semi-closed flat round box body, the upper part of the outer ring surface of the sealing box body is turned with threads and is connected with the sealing pressing cap, the sealing box body and the sealing pressing cap are coaxially arranged and form an annular space with the sucker rod, a sealing lining ring, an adhesive injection packing, a rectangular sealing ring and a sealing pressing ring are sequentially arranged in the annular space of the sealing box body, the sealing pressing cap and the sucker rod from bottom to top, the adhesive injection packing and the rectangular sealing ring are sequentially compressed along the axial direction of the sealing lining ring and the sealing pressing ring, the adhesive injection packing and the rectangular sealing ring simultaneously deform along the radial direction of the sucker rod, and double-stage nonmetal dynamic sealing is formed between the. The middle part of the box wall of the sealing box body is provided with an adhesive injection hole, the adhesive injection hole of the sealing box body is connected with an adhesive injection body through threads, an adhesive injection gun conducts adhesive injection operation through an adhesive injection channel of the adhesive injection body and the adhesive injection hole of the sealing box body, and therefore an adhesive injection packing is formed in the annular space of the sealing box body, the sealing pressing cap and the sucker rod.

The bottom end face of the sealing box body is milled into a sealing sliding plane and is milled with coaxial annular grooves which are arranged in a layered mode, and the double sealing rings are arranged in the annular grooves of the sealing box body, so that sealing between the sealing box body and the deviation adjusting body is realized. The lower part of the outer ring surface of the sealing box body is provided with an annular clamping ring, the upper end surface of the annular clamping ring of the sealing box body is milled into an offset thrust plane, and the offset thrust plane of the sealing box body is tightly attached to the offset compression plane of the offset compression cap, so that the axial fixation of the polish rod sealer is realized.

The box walls of the sealing pressure cap and the bias-adjusting pressure cap are provided with square holes which are symmetrically arranged along the radial direction of the sealing pressure cap and the bias-adjusting pressure cap, and the square holes of the sealing pressure cap and the bias-adjusting pressure cap are matched with the square diameter of the tightening wrench. The box bottom surface of the sealing pressing cap is milled into a sealing pressing plane, the sealing pressing plane of the sealing pressing cap is tightly attached to the upper end face of the sealing pressing ring, the sealing pressing cap is screwed through a screwing wrench, and the sealing pressing ring moves downwards along the inner wall of the ring cavity of the sealing box body.

The sealing compression ring and the sealing liner ring are thick-walled cylinders, the upper part of the sealing compression ring is provided with an annular positioning ring, the sealing compression ring realizes radial positioning according to the annular positioning ring, the outer annular surface of the sealing compression ring is precisely matched with the inner wall of the annular cavity of the sealing box body to form a cylindrical surface moving pair, the outer annular surface of the sealing liner ring is in clearance fit with the inner wall of the annular cavity of the sealing box body, annular oil grooves which are arranged at equal intervals in a layered mode along the axial direction of the sealing liner ring are milled on the outer annular surface of the sealing liner ring, and lubricating grease is filled in each layer of annular oil grooves.

The central parts of the box bottoms of the sealing box body and the sealing pressing cap are respectively drilled with a guide rod round hole, the central parts of the sealing pressing ring and the sealing lining ring are respectively drilled with a slide rod eyelet, and the aperture of the guide rod round holes of the sealing box body and the sealing pressing cap and the aperture of the slide rod eyelet of the sealing pressing ring and the sealing lining ring are respectively larger than the rod diameter of the sucker rod.

The glue injection body is composed of a glue injection head and a glue injection screw plug, the glue injection screw plug of the glue injection body is connected with the glue injection head through threads by adopting a standard screw plug, the sealing of the sealed box body is realized, the glue injection head of the glue injection body is a thin-wall barrel, the end part of the glue injection head adopts a threaded connector, a glue injection channel is arranged in an annular cavity of the glue injection head, and the glue injection channel of the glue injection body adopts a stepped revolution surface.

In the double-stage nonmetal dynamic sealing operation, the spanner is screwed to screw the sealing pressing cap, the sealing pressing ring moves downwards along the inner wall of the annular cavity of the sealing box body, the back sealing lining ring and the sealing pressing ring sequentially compress the glue injection packing and the rectangular sealing ring along the axial direction of the back sealing lining ring and the sealing pressing ring, the glue injection packing and the rectangular sealing ring deform simultaneously along the radial direction of the sucker rod in the annular space of the sealing box body, the sealing pressing cap and the sucker rod, and therefore double-stage nonmetal dynamic sealing is formed between the sucker rod and the polished rod sealer.

The servo offset regulator completes radial servo sliding offset regulation according to lateral eccentric force when the sucker rod and the wellhead tee joint are eccentric, automatically compensates offset between the polished rod sealer and the sucker rod, and forms three-stage nonmetal static seal with the polished rod sealer according to the L-shaped sealing ring and the double sealing rings, and the servo offset regulator comprises an offset regulating cap, the L-shaped sealing ring and an offset regulating body.

The deviation adjusting body and the deviation adjusting cap both adopt semi-closed oblate box bodies, and deviation adjusting round holes are drilled in the center of the box bottoms of the deviation adjusting body and the deviation adjusting cap. The inner wall of the annular cavity of the deviation adjusting body is provided with an annular clamping ring of the sealing box body, the box top surface and the box bottom surface of the deviation adjusting body are respectively milled into a deviation adjusting layered plane and a deviation adjusting sliding plane, the deviation adjusting layered plane of the deviation adjusting body is milled with an annular sealing groove, an L-shaped sealing ring is arranged in the annular sealing groove of the deviation adjusting body, the deviation adjusting sliding plane of the deviation adjusting body and the sealing sliding plane of the sealing box body are precisely matched to form a plane moving pair, the inner diameter of the deviation adjusting body is larger than the diameter of the outer annular clamping ring of the sealing box body, and the diameter of a deviation adjusting round hole of the deviation adjusting cap is larger than the outer diameter of the upper part of the annular clamping ring of the sealing box body, so that the follow-up sliding of any position between the follow-up deviation adjuster and. The box bottom center part of the deviation adjusting body is provided with a cylindrical round table, the lower end face of the cylindrical round table of the deviation adjusting body is milled with a tapered clamping groove, and the cross section of the tapered clamping groove of the deviation adjusting body is in a right trapezoid shape.

The box bottom surface of the bias adjusting cap is milled into a bias adjusting compression plane, the bias adjusting compression plane of the bias adjusting cap is matched with a bias adjusting layering plane of the bias adjusting body and compresses the L-shaped sealing ring, simultaneously, the bias adjusting slippage plane of the bias adjusting body and the sealing slippage plane of the sealing box body compress the double sealing rings, the L-shaped sealing ring and the double sealing rings simultaneously deform, and three-stage nonmetal static sealing is formed between the polish rod sealer and the follow-up bias adjuster.

The double-seal ring adopts the binary structure, and rectangle sealing ring and L shape sealing ring all adopt the monomer structure, and the cross section of double-seal ring and rectangle sealing ring all is the rectangle, and the cross section of L shape sealing ring personally submits the L shape of invering, and the L shape sealing ring compresses tightly the plane with the tuningout of tuningout cap and tuningout the tuningout layering plane of tuningout body and the annular seal groove bottom surface of tuningout body and forms sealed clitellum simultaneously.

In the radial follow-up sliding deviation-adjusting operation, when the sucker rod and the wellhead tee joint generate eccentricity, the sealing contact part of the polished rod sealer and the sucker rod generates lateral eccentric force, then the deviation-adjusting sliding plane of the deviation-adjusting body and the sealing sliding plane of the sealing box body perform follow-up sliding, and the deviation amount between the polished rod sealer and the sucker rod is automatically compensated to continuously keep a coaxial state; and then screwing a spanner to screw the bias adjusting cap, enabling the bias adjusting cap to move downwards along the axial direction of the bias adjusting cap, respectively compressing the L-shaped sealing rings through the bias adjusting compression plane of the bias adjusting cap and the bias adjusting layered plane of the bias adjusting body, respectively compressing the double sealing rings through the bias adjusting sliding plane of the bias adjusting body and the sealing sliding plane of the sealing box body, and simultaneously deforming the L-shaped sealing rings and the double sealing rings, thereby forming three-stage nonmetal static sealing between the polished rod sealer and the follow-up bias adjuster.

The buckle blowout preventer implements radial precise buckle sliding blowout prevention operation along a buckle channel of the blowout preventer body, a sucker rod is clamped according to the rod sealing core, meanwhile, a nonmetal static seal is formed between the blowout preventer body and the left buckle body and between the blowout preventer body and the right buckle body through the shell sealing core, and the buckle blowout preventer comprises the blowout preventer body, the left buckle body, the right buckle body and the clamp head.

The blowout preventer adopts a cylindrical four-way joint, the end parts of the upper and lower two-way joints of the blowout preventer are provided with cylindrical joints, the end part of the cylindrical joint at the upper end of the blowout preventer is provided with a tapered snap ring, the tapered snap ring of the blowout preventer is matched with a tapered clamping groove of the deviation adjusting body, and the buckle blowout preventer and the follow-up deviation adjuster are connected into a whole in a circumferential welding mode. The central part of the upper and lower two-way of the blowout preventer body is drilled with a blowout-preventing round hole, the aperture of the blowout-preventing round hole of the blowout preventer body is equal to the aperture of the deviation-adjusting round hole of the deviation-adjusting body and is larger than the aperture of the guide rod round hole of the sealing box body, and an annular space for oil liquid to flow is formed between the blowout-preventing round hole of the blowout preventer body and the deviation-adjusting round hole of the deviation-adjusting body and the sucker. The outer edges of the left and right through holes of the blowout preventer are turned with screw holes which are uniformly distributed along the circumferential direction, the central part of the left and right through holes of the blowout preventer is milled with a buckle channel, the buckle channel of the blowout preventer is vertically crossed with the blowout prevention round hole of the blowout preventer, and the hole wall of the buckle channel of the blowout preventer is formed by combining two coaxially arranged slideway circular arch surfaces and two mutually parallel slideway planes.

The specifications and the structures of the left buckle body and the right buckle body are the same and are composed of a buckle body, a rod sealing core, a shell sealing core and a positioning pin, the buckle body adopts a cylindrical steel block, an arch-shaped clamping hole is drilled on the buckle body along the axial inner side end face of the buckle body, when the left buckle body and the right buckle body clamp the sucker rod, the axis of the cylindrical surface where the arch-shaped clamping hole of the buckle body is located coincides with the axis of the sucker rod, and the diameter of the cylindrical surface where the arch-shaped clamping hole of the buckle body is located is larger than the rod diameter of. The middle part of an arched clamp hole of the buckle body is milled with a rectangular seal groove, a rod seal core is configured in the rectangular seal groove of the buckle body, nonmetal static seal between the sucker rod and the buckle blowout preventer is achieved, the bottom surface of the rectangular seal groove of the buckle body is arranged in a mode that a plane is perpendicular to the axis of the buckle body, and meanwhile, symmetrically arranged conical holes are drilled in the bottom surface of the rectangular seal groove of the buckle body.

The buckle body is milled with arch draw-in groove and arch cardboard along its axial outside terminal surface in proper order, and the arch draw-in groove and the arch cardboard of buckle body cooperate with the pole head and the rod neck of hydraulic drive pole respectively. The lower part of buckle body anchor ring mills the rectangle oil drain of arranging along its axial, and the annular space of preventing spouting the body and sucker rod keeps the UNICOM through the rectangle oil drain of buckle body and between the buckle passageway of preventing spouting the body, and the upper portion of buckle body anchor ring mills the arch seal groove of arranging along its circumference simultaneously, and the embedded shell seal core of arch seal groove of buckle body realizes the nonmetal static seal between the body of preventing spouting and left buckle body and the right buckle body from this. The two ends of the arched sealing groove of the buckle body are respectively communicated with the bottom surface of the rectangular sealing groove of the buckle body, and therefore the shell sealing core is tightly attached to the end surface of the outer side of the rod sealing core along the front side and the rear side of the end surface of the inner side of the radial direction of the sucker rod.

The front part and the rear part of the fastener body annular surface are milled with two parallel sliding planes, the annular surface and the sliding planes of the fastener body are simultaneously precisely matched with the slideway circular arch surface and the slideway plane of the blowout preventer body fastener channel to form four moving pairs with the circular arch surface and the plane combined, and the fastener channel of the blowout preventer body provides a radial precise fastener sliding channel for the left fastener body and the right fastener body.

The pole seals the core, the shell seals the core, the double containment ring, butyronitrile resistant oil rubber is all selected for use to rectangle sealing ring and L shape sealing ring, the pole seals the core and adopts the square rubber body, the shell seals the core and adopts the arch rubber body, the medial surface of the sealed core of pole is equipped with arch card hole, the diameter of the arch card hole place cylinder of the sealed core of pole equals the pole footpath of sucker rod, the outside terminal surface of the sealed core of pole adopts the plane and is equipped with symmetrical arrangement's cylindricality punchhole, the locating pin cooperatees with the cylindricality punchhole of the sealed core of pole and the toper punchhole of buckle body simultaneously, realize the location of the sealed core of pole.

Sealing belts are formed between the arched clamping holes of the rod sealing cores of the left clamping body and the right clamping body and the sucker rod, between the end faces of the rod sealing cores along the radial outer side of the sucker rod, between the front end face and the rear end face of the rod sealing core and the slideway plane of the blowout preventer body clamping channel, and between the outer annular arch faces of the shell sealing cores of the left clamping body and the right clamping body and the slideway circular arch face of the blowout preventer body clamping channel.

The clamp head is provided with a trapezoidal snap ring and a cylindrical joint in sequence, the cylindrical joint of the clamp head is matched with the cylindrical joint at the lower end of the blowout preventer body, the clamp head is connected with the blowout preventer body in a circumferential welding mode, the cross section of the trapezoidal snap ring of the clamp head is formed by combining a right trapezoid and a rectangle, an annular groove is milled on the lower end face of the trapezoidal snap ring of the clamp head, a sealing ring is configured in the annular groove, and the clamp head is coaxially arranged with the wellhead tee joint through the trapezoidal snap ring.

The hydraulic drive power device provides propulsion power for radial precise buckle sliding blowout prevention operation of the left buckle body and the right buckle body, and comprises two sets of hydraulic drive rods, a hydraulic drive cylinder barrel, a hydraulic drive butt joint barrel, a set of oil delivery manifold and a multi-way reversing valve.

The two sets of hydraulic drive rods, the hydraulic drive cylinder barrel and the hydraulic drive butting barrel are all horizontally arranged along the radial direction of the sucker rod, the hydraulic drive rods and the hydraulic drive cylinder barrel are matched and combined to form the plunger type hydraulic oil cylinder, and hydraulic oil of the plunger type hydraulic oil cylinder is uniformly supplied and distributed through a set of multi-way reversing valve and an oil delivery pipe manifold.

The liquid driving rod is composed of a rod head, a rod neck, a rod hoop and a rod body, the rod head of the liquid driving rod and the rod diameter of the rod body are equal and larger than the rod diameter of the rod hoop, the rod body of the liquid driving rod is placed into the liquid driving cylinder, the rod head of the liquid driving rod is tightly attached to the bottom surface of the clamping groove of the arched clamping groove of the buckle body along the axial inner side end face of the rod head of the liquid driving rod, meanwhile, the joint face of the rod neck and the rod hoop of the liquid driving rod and the end face of the outer side of the arched clamping plate of the buckle body are tightly attached to each other, and therefore precise transmission between the liquid driving rod and the.

The hydraulic drive cylinder barrel adopts a cylindrical cylinder body with one closed end, a cylinder barrel flange is arranged at the inner side end of the hydraulic drive cylinder barrel, cylindrical bosses are arranged at two ends of the outer ring surface of the hydraulic drive cylinder barrel, an oil conveying duct is drilled in the central part of the cylindrical boss of the hydraulic drive cylinder barrel, the oil conveying ducts of the hydraulic drive cylinder barrel are respectively connected with an oil conveying manifold, and therefore bidirectional drive of the hydraulic drive power device is achieved through the oil conveying manifold and oil passing and returning of the oil conveying duct of the hydraulic drive cylinder barrel.

The liquid drive butting cylinder is a thick-wall cylinder body, butting flange plates are arranged at two side ends of the thick-wall cylinder body, the liquid drive butting cylinder is connected with the plunger type hydraulic oil cylinder into a whole through the butting flange plates along the axial outer side of the liquid drive butting cylinder and the cylinder flange plates of the liquid drive cylinder, and the liquid drive power device is connected to two side ends of the buckle blowout preventer through the butting flange plates along the axial inner side of the liquid drive butting cylinder. The butt joint clamp corresponding to the ring surface and the sliding plane of the buckle body is arranged on the end face of the inner side of the liquid drive butt joint barrel in the axial direction, and the butt joint clamp of the liquid drive butt joint barrel is matched with the buckle channel of the blowout prevention body, so that the liquid drive butt joint barrel is quickly and accurately butted with the blowout prevention body.

During radial accurate buckle slides and prevents spouting the operation, the liquid of liquid drive power ware drives the cylinder and provides propulsion power to according to the liquid drive butt joint section of thick bamboo with prevent spouting quick accurate butt joint between the body, the accurate transmission between the buckle body of liquid drive pole and left buckle body and right buckle body and the buckle body and prevent spouting four pairs of moving of face and plane combination between the body, and directly promote the buckle body of buckle preventer through the liquid drive pole and carry out radial accurate buckle and slide along preventing spouting the buckle passageway of body, simultaneously by the pole seal core chucking sucker rod respectively of left buckle body and right buckle body, form nonmetal static seal between sucker rod and buckle preventer from this, and according to the shell seal core prevent spouting the body and form nonmetal static seal between left buckle body and right buckle body.

The polished rod sealer of the polished rod sealing and liquid-driven blowout prevention integrated device adopts the columnar long box body, forms two-stage nonmetal dynamic sealing with the sucker rod according to the glue injection packing and the rectangular sealing ring, completes radial follow-up sliding deflection adjustment according to the lateral eccentric force when the sucker rod and a wellhead tee are eccentric, automatically compensates the offset between the polished rod sealer and the sucker rod, and forms three-stage nonmetal static sealing according to the L-shaped sealing ring and the double sealing rings and the polished rod sealer; the hydraulic drive power device provides power for the left buckling body and the right buckling body to perform radial precise buckling sliding blowout prevention operation, the buckling blowout preventer performs radial precise buckling sliding blowout prevention operation along a buckling channel of the blowout preventer, the sucker rod is clamped according to the rod sealing core, and meanwhile, a nonmetal static seal is formed between the blowout preventer and the left buckling body and between the shell sealing core and the right buckling body.

Drawings

The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following examples.

Fig. 1 is a schematic diagram of a typical structure of a servo-actuated polarization-adjusting rod sealing and liquid-driven blowout prevention integrated device provided by the invention.

Fig. 2 is a schematic diagram of a polished rod sealer in the integrated follow-up polarization-adjusting polished rod sealing and liquid-driven blowout prevention device.

FIG. 3 is a schematic view of a double-stage nonmetal dynamic sealing operation flow of the servo-actuated offset-adjusting polish rod sealing and liquid-driven blowout prevention integrated device.

Fig. 4 is a schematic diagram of a follow-up deflector in the follow-up deflector rod sealing and liquid-driven blowout prevention integrated device.

Fig. 5 is a schematic view of the radial follow-up sliding deviation-adjusting operation flow of the follow-up deviation-adjusting polished rod sealing and liquid-driven blowout prevention integrated device.

FIG. 6 is a schematic diagram of a snap-on blowout preventer in a servo-biased rod seal and fluid drive blowout preventer integration.

Fig. 7 is a left side view of fig. 6.

Fig. 8 is a schematic structural diagram of a left fastener and a right fastener in the servo-actuated polarization-adjusting rod sealing and liquid-driven blowout prevention integrated device.

Fig. 9 is a schematic diagram of a hydraulic drive power unit in the integrated follow-up polarization-adjusting rod sealing and hydraulic drive blowout prevention device.

Fig. 10 is a simplified radial precision buckle sliding blowout prevention operation flow diagram of the servo-deviation-adjusting polished rod sealing and liquid-driven blowout prevention integrated device.

In the figure, 1-a sucker rod, 2-a polished rod sealer, 3-a follow-up offset regulator, 4-a snap blowout preventer, 5-a hydraulic drive power device, 6-a sealing press cap, 7-a sealing press ring, 8-a rectangular sealing ring, 9-an injection body, 10-an injection packing, 11-a sealing box body, 12-a sealing liner ring, 13-a double sealing ring, 14-a tightening wrench, 15-an injection screw plug, 16-an injection head, 17-an injection gun, 18-an offset press cap, 19-an L-shaped sealing ring, 20-an offset body, 21-an ejection preventer, 22-a left snap body, 23-a right snap body, 24-a clamp head, 25-a shell sealing core, 26-a positioning pin, 27-a rod sealing core, 28-a snap body, 29-a hydraulic drive cylinder barrel, 30-a hydraulic drive butt barrel, 31-a hydraulic drive rod, 32-an oil pipe junction and 33-a multi-way reversing valve.

Detailed Description

In fig. 1, the integrated device for follow-up deviation-adjusting polish rod sealing and liquid-driven blowout prevention comprises a polish rod sealer 2, a follow-up deviation-adjusting device 3, a buckle blowout preventer 4 and a liquid-driven power device 5, wherein the integrated device for polish rod sealing and liquid-driven blowout prevention realizes radial follow-up sliding deviation adjustment, two-stage non-metal dynamic sealing and radial precise buckle sliding blowout prevention operation of the sucker rod 1 at a wellhead according to an injection packing, a rectangular sealing ring and a double sealing ring of the polish rod sealer 2, an L-shaped sealing ring of the follow-up deviation-adjusting device 3, a rod sealing core and a shell sealing core of the buckle blowout preventer 4 and power provided by the liquid-driven power device 5.

In fig. 1, the servo deviation-adjusting polish rod sealing and liquid-driving blowout prevention integrated device adopts an axisymmetric structure, and is connected with a wellhead tee joint into a whole through a clamp head of a buckle blowout preventer 4, a polish rod sealer 2, a servo deviation-adjusting device 3 and the buckle blowout preventer 4 all adopt revolving bodies and are coaxially arranged from top to bottom in sequence, and liquid-driving power devices 5 are symmetrically arranged at two side ends of the buckle blowout preventer 4 along the radial directions of a sucker rod 1 and the wellhead tee joint.

In fig. 1, before the follow-up deviation-adjusting polish rod sealing and liquid-driven blowout prevention integrated device is assembled, the outer surfaces of the sealing pressure cap and the sealing box body of the polish rod sealer 2, the deviation-adjusting cap and the deviation-adjusting body of the follow-up deviation-adjusting device 3 and the blowout prevention body of the buckle blowout preventer 4 are respectively subjected to paint spraying and corrosion preventing treatment, the sealing box body of the polish rod sealer 2, the deviation-adjusting body of the follow-up deviation-adjusting device 3 and the cavity wall of the blowout prevention body of the buckle blowout preventer 4 are sequentially coated with lubricating grease, and an annular groove of the sealing box body of the polish rod sealer 2 and an annular oil groove of the sealing lining ring are respectively filled with. The sealing press ring of the polish rod sealer 2 is arranged in the sealing box body to rotate, and is light, flexible and free of blocking, and the left buckle body and the right buckle body of the buckle blowout preventer 4 are arranged in the blowout preventer body to move in a reciprocating mode, and are light, flexible and free of blocking. Keeping the deviation adjusting body of the follow-up deviation adjusting device 3 and the cavity wall of the blowout prevention body of the buckle blowout preventer 4 clean, simultaneously checking glue injection packing, a rectangular sealing ring and a double sealing ring of the polished rod sealer 2 in sequence, checking whether the L-shaped sealing ring of the follow-up deviation adjusting device 3 and the rod sealing core and the shell sealing core of the buckle blowout preventer 4 are damaged or not, and checking whether each thread connection part is firm and has no corrosion or not.

In fig. 1, when the servo deviation-adjusting polish rod sealing and liquid-driven blowout prevention integrated device is assembled, a deviation-adjusting body of a servo deviation adjuster 3 is connected with a blowout prevention body of a buckle blowout preventer 4 through welding, a seal lining ring, a rectangular seal ring and a seal pressing ring of a polish rod sealer 2 are sequentially placed in a seal box body of the servo deviation-adjusting device and are covered with a seal pressing cap, then a double seal ring of the polish rod sealer 2 is embedded into an annular groove of a seal box body, the polish rod sealer 2 is placed into a deviation-adjusting body of the servo deviation-adjusting device 3, and then an L-shaped seal ring of the servo deviation-adjusting device 3 is placed into an annular seal concave groove of the deviation-adjusting body and is covered with the deviation-adjusting cap; then, a rod sealing core of the buckle blowout preventer 4 is connected to a rectangular sealing groove of the buckle body through a positioning pin, a shell sealing core is embedded into an arched sealing groove of the buckle body, a left buckle body and a right buckle body of the buckle blowout preventer 4 are matched with a rod head and a rod neck of a liquid drive rod of the liquid drive power device 5 according to an arched clamping groove and an arched clamping plate of the buckle body, the left buckle body and the right buckle body are placed into a blowout prevention body, meanwhile, two sets of plunger type hydraulic cylinders are connected with the buckle blowout preventer 4 into a whole through a liquid drive butt-joint barrel of the liquid drive power device 5, the plunger type hydraulic cylinders are connected with a multi-way reversing valve through oil conveying pipes in a converging mode, and finally, an injection gun is used for injecting glue through an injection body and an injection packing is formed in.

In fig. 1, the type and specification of the follow-up deviation-adjusting polish rod sealing and liquid-driven blowout prevention integrated device are adjusted according to the rod diameter of the sucker rod 1 and the specification change of a wellhead tee joint.

In fig. 2, a two-stage non-metal dynamic seal is formed between the polish rod sealer 2 and the sucker rod 1 according to the rectangular sealing ring 8 and the glue injection packing 10 of the polish rod sealer, the size of the rectangular sealing ring 8 and the glue injection packing 10 is consistent with the diameter of the inner wall of the ring cavity of the sealing box body 11 and the rod diameter of the sucker rod 1, the strength of the thread between the sealing pressure cap 6 and the sealing box body 11 is designed according to the maximum pressing force transmitted by the sealing pressure ring 7 and the sealing lining ring 12, the size of the double sealing ring 13 is consistent with the size of the ring groove of the sealing box body 11, and meanwhile, the specifications of the rectangular sealing ring 8, the glue injection packing 10 and the double sealing ring 13 are selected according to the factors such as the.

In fig. 2, a sealing gland 6 and a sealing box body 11 in a polished rod sealer 2 are sequentially provided with a sealing lining ring 12, a glue injection packing 10, a rectangular sealing ring 8 and a sealing press ring 7 from bottom to top in an annular space between the sucker rod 1 and the sealing box body 11, a glue injection gun injects glue into the annular space between the sealing gland 6 and the sucker rod 1 and between the sealing box body 11 and the sucker rod 1 through a glue injection channel of a glue injection body 9 and a glue injection hole of the sealing box body 11, and thus the glue injection packing 10 is formed, the sealing pressure ring 7 and the sealing lining ring 12 sequentially press the rectangular sealing ring 8 and the glue injection packing 10 along the axial direction thereof, and the rectangular sealing ring 8 and the glue injection packing 10 simultaneously generate deformation along the radial direction of the sucker rod 1, therefore, double-stage nonmetal dynamic sealing is formed between the sucker rod 1 and the polish rod sealer 2, the double sealing rings 13 are arranged in the annular grooves of the sealing box body 11, and sealing between the sealing box body 11 and the deviation adjusting body of the follow-up deviation adjuster 3 is realized.

In fig. 3, in the two-stage nonmetal dynamic sealing operation flow of the servo-actuated deviation-adjusting polish rod sealing and liquid-driving blowout prevention integrated device, the glue injection screw plug 15 of the glue injection body 9 is unscrewed, the glue injection gun 17 is connected with the glue injection head 16 of the glue injection body 9, the glue injection gun 17 performs glue injection operation through the glue injection channel of the glue injection head 16 and the glue injection hole of the sealing box body 11, the glue injection screw plug 15 is screwed after glue injection is completed and stands for a period of time, and thus the glue injection packing 10 is formed in the annular space between the sealing pressure cap 6 and the annular space between the sealing box body 11 and the sucker rod 1; then, the square diameter of the tightening wrench 14 is respectively matched with the square hole of the sealing pressing cap 6, the sealing pressing cap 6 is tightened through the tightening wrench 14, the sealing pressing ring 7 moves downwards along the inner wall of the annular cavity of the sealing box body 11, then the sealing pressing ring 7 and the sealing lining ring 12 sequentially compress the rectangular sealing ring 8 and the glue injection packing 10 along the axial direction, the rectangular sealing ring 8 and the glue injection packing 10 are simultaneously deformed along the radial direction of the sucker rod 1 in the annular space of the sealing pressing cap 6, the sealing box body 11 and the sucker rod 1, and therefore double-stage nonmetal dynamic sealing is formed between the sucker rod 1 and the polish rod sealer 2.

In fig. 4, a three-stage non-metal static seal is formed between the follow-up deviation adjuster 3 and the polished rod sealer 2 according to the L-shaped sealing ring 19 and the double sealing rings 13, the specification of the deviation adjusting body 20 is consistent with the size of a blowout preventer of the buckle blowout preventer 4, the size of the L-shaped sealing ring 19 is consistent with the size of an annular sealing groove of the deviation adjusting body 20, meanwhile, the specification of the L-shaped sealing ring 19 needs to consider the maximum value of oil pressure at a well head and other factors, the strength of threads between the deviation adjusting cap 18 and the deviation adjusting body 20 is designed according to the maximum pressing force required by the L-shaped sealing ring 19 and the double sealing rings 13 to form the three-stage non-metal static seal, and the specification of the tightening wrench 14 needs to consider the maximum value of the tightening torque required by tightening the sealing pressure cap 6 and the maximum value of the tightening torque required by the.

In fig. 4, the follow-up offset adjuster 3 completes radial follow-up sliding offset adjustment according to the lateral eccentric force when the sucker rod 1 and the wellhead tee are eccentric and automatically compensates the offset between the polished rod sealer 2 and the sucker rod 1, and sealing annular belts are formed between the offset pressing plane of the L-shaped sealing ring 19 and the offset cap 18, the offset layered plane of the offset body 20 and the bottom surface of the annular sealing groove of the offset body 20.

In fig. 5, in the radial follow-up sliding deviation-adjusting operation flow of the follow-up deviation-adjusting polish rod sealing and liquid-driven blowout prevention integrated device, when the sucker rod 1 and the wellhead tee joint are eccentric, the deviation amount is delta e, the sealing contact part between the inner wall of the annular cavity of the rectangular sealing ring 8 and the glue injection packing 10 of the polish rod sealer 2 and the outer annular surface of the sucker rod 1 generates lateral eccentric force, then the follow-up sliding between the deviation-adjusting sliding plane of the deviation-adjusting body 20 and the sealing sliding plane of the sealing box body 11 is followed, and the deviation amount delta e between the sucker rod 1 and the wellhead tee joint is automatically compensated, so that the polish rod sealer 2 and the sucker rod 1 are continuously maintained in a coaxial state; then, the square diameter of the tightening wrench 14 is respectively matched with the square hole of the bias adjusting cap 18, the bias adjusting cap 18 is tightened through the tightening wrench 14, the bias adjusting cap 18 moves downwards along the axial direction of the bias adjusting cap, then the L-shaped sealing rings 19 are respectively pressed through the bias adjusting pressing planes of the bias adjusting cap 18 and the bias adjusting layering planes of the bias adjusting body 20, the double sealing rings 13 are respectively pressed through the bias adjusting slippage planes of the bias adjusting body 20 and the sealing slippage planes of the sealing box body 11, the L-shaped sealing rings 19 and the double sealing rings 13 are simultaneously deformed, and therefore three-stage nonmetal static sealing is formed between the polish rod sealing device 2 and the follow-up bias adjusting device 3.

In fig. 6 and 7, specifications of the blowout preventer body 21 and the hoop head 24 of the buckling blowout preventer 4 are consistent with the dimension of a wellhead tee joint, the wall thickness of the blowout preventer body 21 is uniform and is designed according to the maximum value of oil hydraulic pressure at the wellhead, specifications and structures of the left buckling body 22 and the right buckling body 23 are the same, and the specifications of the left buckling body 22 and the right buckling body 23 are consistent with the dimension of a buckling channel of the blowout preventer body 21.

In fig. 6 and 7, the left fastener 22 and the right fastener 23 of the fastening blowout preventer 4 perform radial precise fastening sliding blowout prevention operation along the fastening channel of the blowout preventer 21, an annular space for oil to flow is formed between the blowout prevention circular hole of the blowout preventer 21 and the offset circular hole of the offset body 20 and the sucker rod 1 at the same time, the cylindrical joint of the clamp head 24 and the cylindrical joint of the blowout preventer 21 are connected in a circumferential welding manner, and the clamp head 24 is coaxially arranged with the wellhead tee through the trapezoidal clamping ring of the clamp head.

In fig. 8, the left buckling body 22 and the right buckling body 23 clamp the sucker rod 1 according to the rod sealing core 27 thereof, the hole diameter of the arched hole of the buckling body 28 is consistent with the rod diameter of the sucker rod 1, the size of the shell sealing core 25 is consistent with the size of the slideway circular arch surface of the buckling channel of the blowout preventer 21, the size of the rod sealing core 27 is consistent with the rod diameter of the sucker rod 1 and the slideway plane spacing of the buckling channel of the blowout preventer 21, and meanwhile, the specifications of the shell sealing core 25 and the rod sealing core 27 are selected by considering the factors such as the maximum oil pressure at the wellhead.

In fig. 8, rod seal cores 27 are arranged in rectangular seal grooves of buckle bodies 28 of a left buckle body 22 and a right buckle body 23, and nonmetal static seal between a sucker rod 1 and a buckle blowout preventer 4 is realized, a shell seal core 25 is embedded in an arched seal groove of the buckle body 28, and nonmetal static seal between the blowout preventer 21 and the left buckle body 22 and the right buckle body 23 is realized, a positioning pin 26 is matched with a cylindrical hole of the rod seal core 27 and a conical hole of the buckle body 28 at the same time to realize positioning of the rod seal core 27, and four moving pairs of circular arch surface and plane combination are formed between the buckle body 28 and a buckle channel of the blowout preventer 21.

In fig. 9, the hydraulic drive power device 5 includes two sets of hydraulic drive cylinders 29, a hydraulic drive butt joint cylinder 30, a hydraulic drive rod 31, a set of oil delivery manifold 32 and a multi-way directional valve 33, the specification of the hydraulic drive rod 31 is consistent with that of the buckle body 28, the propulsion distance of the hydraulic drive rod 31 is adjusted along with the maximum displacement value when the left buckle body 22 and the right buckle body 23 perform radial precise buckle sliding, the specification of the hydraulic drive butt joint cylinder 30 is consistent with the size of a buckle channel of the blowout preventer 21, and the oil pressure of hydraulic oil in the hydraulic drive cylinder 29 is designed according to factors such as the maximum propulsion power required when the left buckle body 22 and the right buckle body 23 perform radial precise buckle sliding, the maximum clamping force required by the rod seal core 27 to clamp the sucker rod 1 to form a non-metal static seal, and the like.

In fig. 9, the hydraulic drive power unit 5 provides propulsion power for the radial precise buckling sliding blowout prevention operation of the left buckling body 22 and the right buckling body 23, the hydraulic drive power unit 5 is connected to both sides of the buckling blowout preventer 4 through the butt flange of the hydraulic drive butt joint barrel 30, the hydraulic drive cylinder barrel 29 and the hydraulic drive rod 31 are matched to form a plunger hydraulic cylinder, the multi-way directional valve 33 is connected with the plunger hydraulic cylinder through the oil delivery manifold 32, and the two-way drive of the hydraulic drive power unit 5 is realized through the oil delivery and the oil return of the oil delivery manifold 32 and the oil delivery duct of the hydraulic drive cylinder barrel 29 through the multi-way directional valve 33.

In fig. 10, in the radial precise buckling sliding blowout prevention operation flow of the servo-biased polish rod sealing and liquid driving blowout prevention integrated device, oil is communicated through an oil delivery duct of the oil delivery manifold 32 and the oil delivery cylinder 29 through the multi-way directional control valve 33, the liquid driving cylinder 29 of the plunger type hydraulic cylinder in the liquid driving power device 5 provides propulsion power, meanwhile, the butt joint clamp of the liquid driving butt joint cylinder 30 is in rapid and precise butt joint with the buckling channel of the blowout prevention body 21, the rod head and the rod neck of the liquid driving rod 31 are in precise transmission with the arch clamping groove and the arch clamping plate of the buckling body 28 in the left buckling body 22 and the right buckling body 23, the ring surface and the sliding plane of the buckling body 28 are simultaneously in four moving pairs with the slideway circular arch surface and the slideway plane of the buckling channel of the blowout prevention body 21, so that the buckling body 28 of the left buckling body 22 and the right buckling body 23 is directly pushed by the liquid driving rod 31 to perform radial precise buckling sliding along the buckling channel of the blowout prevention body 21, finally, the sucker rod 1 is respectively clamped by the rod sealing cores 27 of the left buckling body 22 and the right buckling body 23, so that a non-metal static seal is formed between the sucker rod 1 and the buckling blowout preventer 4, and the non-metal static seal is formed between the blowout preventer 21 and the left buckling body 22 and the right buckling body 23 according to the shell sealing core 25.

In fig. 10, after the radial precise snap-fit sliding blowout prevention operation of the servo-biased polish rod sealing and liquid-driven blowout prevention integrated device is completed, oil is returned through the oil delivery manifold 32 and the oil delivery duct of the liquid-driven cylinder 29 through the multi-way directional control valve 33, the liquid-driven cylinder 29 of the plunger-type hydraulic cylinder provides power, the liquid-driven rod 31 directly drags the snap-fit bodies 28 of the left snap-fit body 22 and the right snap-fit body 23 to slide outwards along the snap-fit channel of the blowout prevention body 21, and then the snap-fit bodies 28 and the rod sealing cores 27 of the left snap-fit body 22 and the right snap-fit body 23 respectively release the sucker rod 1; then, the plunger type hydraulic oil cylinder is subjected to pressure relief through the multi-way reversing valve 33 and the oil delivery manifold 32, hydraulic oil in the liquid drive cylinder 29 flows back to the liquid storage and oil pressure container through the oil delivery manifold 32, then the multi-way reversing valve 33 is detached from the oil delivery duct of the liquid drive cylinder 29 along with the oil delivery manifold 32, and finally the screw plug is screwed down and each oil delivery duct of the liquid drive cylinder 29 is sealed.

The above embodiments are only used for illustrating the present invention, and the structure, connection mode and the like of each component can be changed, and all equivalent changes and improvements made on the basis of the technical scheme of the present invention should not be excluded from the protection scope of the present invention.

Claims (10)

1. The utility model provides a follow-up tuningout polished rod seals and liquid drives prevents spouting integrated device, it comprises polished rod sealer, follow-up tuningout ware, buckle preventer and liquid drive power device, and its polished rod sealer, follow-up tuningout ware and buckle preventer from top to bottom arrange with the axle center in proper order, and liquid drive power device arranges in the both sides end of buckle preventer along sucker rod and the radial symmetry of well head tee bend, its characterized in that:

a polish rod sealer; the polish rod sealer adopts a columnar long box body and comprises a sealing box body, a sealing pressing cap, a sealing pressing ring, a sealing lining ring, an injection body, a double sealing ring, a rectangular sealing ring and an injection packing, wherein the sealing box body adopts a semi-closed long round box body, the sealing pressing cap adopts a semi-closed oblate box body, threads are lathed on the upper part of the outer annular surface of the sealing box body and are connected with the sealing pressing cap, and the sealing lining ring, the injection packing, the rectangular sealing ring and the sealing pressing ring are sequentially arranged in annular spaces of the sealing box body, the sealing pressing cap and the sucker rod from bottom to top; the glue injection body consists of a glue injection head and a glue injection screw plug, a glue injection hole in the middle of the sealing box body is connected with the glue injection body through a thread, a glue injection gun conducts glue injection operation through a glue injection channel of the glue injection body and the glue injection hole of the sealing box body, the bottom end face of the sealing box body is milled into a sealing sliding plane and is simultaneously milled with annular grooves which are arranged coaxially in a layered mode, a double sealing ring is arranged in the annular groove of the sealing box body, an annular clamping ring is arranged on the lower portion of the outer annular face of the sealing box body, and the upper end face of the annular clamping ring of the sealing box body is milled into; the box bottom surface of the sealing pressing cap is milled into a sealing pressing plane, the sealing pressing ring and the sealing lining ring adopt thick-wall cylinders, the upper part of the sealing pressing ring is provided with an annular positioning ring, the outer ring surface of the sealing lining ring is milled with annular oil grooves which are arranged in a layered mode at equal intervals along the axial direction of the sealing lining ring, the central parts of the box bottoms of the sealing box body and the sealing pressing cap are respectively drilled with a guide rod round hole, and the central parts of the sealing pressing ring and the sealing lining ring are respectively drilled with a slide rod eyelet;

a follow-up offset adjuster; the servo offset adjuster finishes radial servo sliding offset adjustment according to lateral eccentric force when the sucker rod and the wellhead tee joint are eccentric and automatically compensates offset between the polished rod sealing device and the sucker rod, and comprises an offset adjusting and biasing cap, an L-shaped sealing ring and an offset adjusting body; the bias adjusting body and the bias adjusting cap adopt a semi-closed oblate box body, bias adjusting round holes are drilled in the central parts of the box bottoms of the two parts, and the box bottom surface of the bias adjusting cap is milled into a bias adjusting compression plane; the box top surface and the box bottom surface of the deviation adjusting body are respectively milled into a deviation adjusting layered plane and a deviation adjusting sliding plane, the deviation adjusting layered plane of the deviation adjusting body is milled with an annular sealing groove, an L-shaped sealing ring is arranged in the annular sealing groove of the deviation adjusting body, the lower end surface of a cylindrical round platform of the deviation adjusting body is milled with a tapered clamping groove, a deviation adjusting pressing plane of a deviation adjusting cap is matched with the deviation adjusting layered plane of the deviation adjusting body, meanwhile, the deviation adjusting sliding plane of the deviation adjusting body is precisely matched with the sealing sliding plane of a sealing box body, the L-shaped sealing ring and the double sealing ring simultaneously deform, so that a three-stage nonmetal static seal is formed between the polished rod sealer and the follow-up deviation adjuster, the cross sections of the double sealing ring and the rectangular sealing ring of the polished rod sealer are rectangular, and the cross section of the L-shaped sealing ring of the follow-up deviation adjuster is;

the buckle blowout preventer comprises a blowout preventing body, a left buckle body, a right buckle body and a hoop head; the left buckling body and the right buckling body of the buckling blowout preventer perform radial precise buckling sliding blowout prevention operation along a buckling channel of the blowout prevention body, and the buckling channel of the blowout prevention body provides a radial precise buckling sliding blowout prevention channel for the left buckling body and the right buckling body; the anti-spraying body adopts a cylindrical four-way joint, the end parts of the upper and lower two-way joints of the anti-spraying body are provided with cylindrical joints, the center part of the anti-spraying body is drilled with an anti-spraying circular hole, the end part of the cylindrical joint at the upper end of the anti-spraying body is provided with a tapered snap ring, the tapered snap ring of the anti-spraying body is matched with a tapered snap groove of the deviation adjusting body, the center part of the left and right two-way joints of the anti-spraying body is milled with a buckle channel, the clamp head is sequentially provided with a trapezoidal snap ring and a cylindrical joint, and the clamp head and the anti-spraying body; the left buckle body and the right buckle body are both composed of a buckle body, a rod sealing core, a shell sealing core and a positioning pin, the buckle body is made of a cylindrical steel block, an arch clamping hole is drilled in the buckle body along the axial inner side end face of the buckle body, an arch clamping groove and an arch clamping plate are sequentially milled in the outer side end face of the buckle body, a rectangular sealing groove is milled in the middle of the arch clamping hole of the buckle body, the rod sealing core is configured in the rectangular sealing groove of the buckle body, symmetrically-arranged conical holes are drilled in the bottom face of the rectangular sealing groove, a rectangular oil groove is milled in the lower portion of the annular face of the buckle body and is axially arranged, an arch sealing groove is milled in the upper portion of the annular face of the buckle body and is circumferentially arranged in the annular face of the buckle body, the shell sealing core is embedded in the arch sealing groove of the buckle body, two parallel sliding planes are milled in the front portion and the rear portion of the annular face of the buckle body, the buckle channel of the blowout preventing body is perpendicularly The annular surface of the buckle body and the sliding plane of the buckle body are simultaneously precisely matched with the circular arch surface and the sliding plane of the sliding way of the blowout preventer body buckle channel to form a four-sliding pair with the circular arch surface and the plane; the rod sealing core adopts a square rubber body, the shell sealing core adopts an arched rubber body, the inner side end face of the rod sealing core is provided with an arched clamping hole, the outer side end face of the rod sealing core adopts a plane and is provided with symmetrically arranged cylindrical holes, and the positioning pin is matched with the cylindrical holes of the rod sealing core and the conical holes of the buckle body;

a fluid-driven power device; the hydraulic drive power device provides propulsion power for radial precise buckle sliding blowout prevention operation of the left buckle body and the right buckle body, and comprises a hydraulic drive rod, a hydraulic drive cylinder barrel, a hydraulic drive butting barrel, an oil delivery pipe manifold and a multi-way reversing valve, wherein the hydraulic drive rod, the hydraulic drive cylinder barrel and the hydraulic drive butting barrel are respectively provided with two sets, and the oil delivery pipe manifold and the multi-way reversing valve are respectively provided with one set; the two sets of hydraulic drive rods, the hydraulic drive cylinder barrel and the hydraulic drive butting barrel are all horizontally arranged along the radial direction of the sucker rod, the hydraulic drive rods and the hydraulic drive cylinder barrel form a plunger type hydraulic oil cylinder, and hydraulic oil of the plunger type hydraulic oil cylinder is uniformly supplied and distributed through a set of multi-way reversing valve and an oil delivery pipe manifold; the liquid drive rod is composed of a rod head, a rod neck, a rod hoop and a rod body, precise transmission is performed between the liquid drive rod and the buckle bodies of the left buckle body and the right buckle body, the liquid drive cylinder is a cylindrical cylinder with one closed end, a cylinder flange is arranged at the inner side end of the liquid drive cylinder, cylindrical bosses are arranged at two ends of the outer annular surface of the liquid drive cylinder, an oil delivery hole is drilled in the central part of each cylindrical boss of the liquid drive cylinder, the liquid drive butt joint cylinder is a thick-wall cylinder, butt joint flanges are arranged at two side ends of the liquid drive butt joint cylinder, and butt joint hoops corresponding to the annular surface of the buckle body and the sliding plane of the buckle body are arranged on the.

2. The integrated follow-up polarization-adjusting rod sealing and liquid-driven blowout prevention device according to claim 1, characterized in that: the servo deviation-adjusting polish rod sealing and liquid-driven blowout prevention integrated device is of an axisymmetric structure and is connected with a wellhead tee into a whole through a hoop head of a buckle blowout preventer, and a polish rod sealer, the servo deviation-adjusting device and the buckle blowout preventer all adopt revolving bodies.

3. The integrated follow-up polarization-adjusting rod sealing and liquid-driven blowout prevention device according to claim 1, characterized in that: the sealing box body and the sealing pressure cap of the polished rod sealer are coaxially arranged and form an annular space with the sucker rod, the sealing liner ring and the sealing pressure ring sequentially compress the glue injection packing and the rectangular sealing ring along the axial direction of the sealing liner ring and the sealing pressure ring, the glue injection packing and the rectangular sealing ring simultaneously deform along the radial direction of the sucker rod, and double-stage nonmetal dynamic sealing is formed between the sucker rod and the polished rod sealer;

the glue injection hole is formed in the middle of the box wall of the sealed box body, and a glue injection packing is formed in an annular space between the sealed box body and the sucker rod and between the sealed pressing cap and the sucker rod; the deviation-adjusting thrust plane of the sealing box body is tightly attached to the deviation-adjusting pressing plane of the deviation-adjusting pressing cap, and axial fixation of the polished rod sealer is achieved.

4. The integrated follow-up polarization-adjusting rod sealing and liquid-driven blowout prevention device according to claim 1, characterized in that: the sealing compression ring is tightly attached to the upper end face of the sealing compression ring, the sealing compression ring is radially positioned according to an annular positioning ring of the sealing compression ring, the outer annular surface of the sealing compression ring is precisely matched with the inner wall of an annular cavity of the sealing box body to form a cylindrical surface moving pair, the outer annular surface of the sealing liner ring is in clearance fit with the inner wall of the annular cavity of the sealing box body, and the diameters of the guide rod round holes of the sealing box body and the sealing compression cap and the diameters of the slide rod eyelets of the sealing compression ring and the sealing liner ring are both larger than the rod diameter of the sucker rod;

the glue injection screw plug of the glue injection body is connected with the glue injection head through threads, so that the sealing of the sealed box body is realized, the glue injection head of the glue injection body adopts a thin-wall barrel body, a ring cavity of the glue injection head is provided with a glue injection channel, and the glue injection channel of the glue injection body adopts a stepped revolution surface.

5. The integrated follow-up polarization-adjusting rod sealing and liquid-driven blowout prevention device according to claim 1, characterized in that: the inner wall of the annular cavity of the deviation adjusting body is provided with an annular snap ring for sealing the box body, the central part of the box bottom of the deviation adjusting body is provided with a cylindrical round table, and the cross section of a conical clamping groove of the deviation adjusting body is in a right trapezoid shape;

the deviation adjusting sliding plane of the deviation adjusting body and the sealing sliding plane of the sealing box body are precisely matched to form a plane sliding pair, meanwhile, the inner diameter of the deviation adjusting body is larger than the diameter of the outer ring surface of the annular clamping ring of the sealing box body, and the diameter of the deviation adjusting round hole of the deviation adjusting cap is larger than the outer diameter of the upper part of the annular clamping ring of the sealing box body, so that the follow-up sliding at any position of the follow-up deviation adjusting device and the polished rod sealing device is realized.

6. The integrated follow-up polarization-adjusting rod sealing and liquid-driven blowout prevention device according to claim 1, characterized in that: the deviation adjusting and pressing plane of the deviation adjusting and pressing cap is matched with the deviation adjusting and layering plane of the deviation adjusting body and presses the L-shaped sealing ring, and meanwhile, the deviation adjusting and sliding plane of the deviation adjusting body and the sealing and sliding plane of the sealing box body press the double sealing rings;

the double sealing rings of the polished rod sealer adopt a double-body structure, the rectangular sealing ring of the polished rod sealer and the L-shaped sealing ring of the follow-up deviation adjuster both adopt a single-body structure, and sealing annular belts are formed between the L-shaped sealing ring and the deviation adjusting pressing plane of the deviation adjusting cap, the deviation adjusting layered plane of the deviation adjusting body and the annular sealing groove bottom surface of the deviation adjusting body.

7. The integrated follow-up polarization-adjusting rod sealing and liquid-driven blowout prevention device according to claim 1, characterized in that: the aperture of the blowout preventing circular hole of the blowout preventing body is equal to that of the deviation adjusting circular hole of the deviation adjusting body and is larger than that of the guide rod circular hole of the sealing box body, an annular space for oil liquid to flow is formed between the blowout preventing circular hole of the blowout preventing body and the deviation adjusting circular hole of the deviation adjusting body and the sucker rod at the same time, and the buckle blowout preventer and the follow-up deviation adjuster are connected into a whole through a conical clamping groove of the deviation adjusting body in a circumferential welding mode;

the cylindrical joint of the clamp head is matched with the cylindrical joint at the lower end of the blowout preventer, the cross section of the trapezoidal snap ring of the clamp head is formed by combining a right trapezoid and a rectangle, and the clamp head is coaxially arranged with the wellhead tee through the trapezoidal snap ring.

8. The integrated follow-up polarization-adjusting rod sealing and liquid-driven blowout prevention device according to claim 1, characterized in that: the left buckling body and the right buckling body are the same in specification and structure, and when the sucker rod is clamped by the left buckling body and the right buckling body, the axis of the cylindrical surface where the arched buckling hole of the buckling body is located coincides with the axis of the sucker rod; a rod sealing core in a rectangular sealing groove of the buckle body realizes non-metal static sealing between the sucker rod and the buckle blowout preventer, and the bottom surface of the rectangular sealing groove is arranged in a plane and is vertically intersected with the axis of the buckle body;

the arc-shaped clamping groove and the arc-shaped clamping plate of the buckle body are respectively matched with the rod head and the rod neck of the hydraulic drive rod, the annular spaces of the blowout prevention body and the pumping rod are communicated with the buckle channel of the blowout prevention body through the rectangular oil groove of the buckle body, and meanwhile, the shell sealing core in the arc-shaped sealing groove of the buckle body realizes non-metal static sealing between the blowout prevention body and the left buckle body and the right buckle body;

the two ends of the arched sealing groove of the buckle body are respectively communicated with the bottom surface of the rectangular sealing groove of the buckle body, and therefore the shell sealing core is tightly attached to the end surface of the outer side of the rod sealing core along the front side and the rear side of the radial inner side end surface of the sucker rod.

9. The integrated follow-up polarization-adjusting rod sealing and liquid-driven blowout prevention device according to claim 1, characterized in that: the positioning pins of the left buckling body and the right buckling body realize the positioning of the rod sealing core in the rectangular sealing groove of the buckling body, and the diameter of the cylindrical surface where the arched clamping hole of the rod sealing core is located is equal to the rod diameter of the sucker rod;

sealing belts are formed between the arched clamping holes of the rod sealing cores of the left clamping body and the right clamping body and the sucker rod, between the end faces of the rod sealing cores along the radial outer side of the sucker rod, between the front end face and the rear end face of the rod sealing core and the slideway plane of the clamping channel of the blowout preventer, and between the outer ring arch faces of the shell sealing cores of the left clamping body and the right clamping body and the slideway circular arch face of the clamping channel of the blowout preventer at the same time.

10. The integrated follow-up polarization-adjusting rod sealing and liquid-driven blowout prevention device according to claim 1, characterized in that: the hydraulic driving rod of the hydraulic driving power device is matched with the hydraulic driving cylinder barrel, the rod head of the hydraulic driving rod and the rod diameter of the rod body are equal and larger than the rod diameter of the rod hoop, the rod body of the hydraulic driving rod is placed into the hydraulic driving cylinder barrel, the rod head of the hydraulic driving rod is tightly attached to the bottom surface of the clamping groove of the arched clamping groove of the buckle body along the axial inner side end surface of the rod head of the hydraulic driving rod, and meanwhile, the joint surface of the rod neck of the hydraulic driving rod and the rod hoop is tightly attached to the outer side end surface of the arched clamping groove of the buckle body;

the oil delivery duct of the hydraulic drive cylinder barrel is respectively connected with an oil delivery manifold, and the bidirectional driving of the hydraulic drive power device is realized through the oil delivery manifold and the oil delivery and return of the oil delivery duct of the hydraulic drive cylinder barrel;

the hydraulic drive butting cylinder of the hydraulic drive power device is connected with the plunger type hydraulic oil cylinder into a whole through a butting flange plate along the axial outer side of the hydraulic drive butting cylinder and a cylinder flange plate of the hydraulic drive cylinder, and the hydraulic drive power device is connected to two side ends of the buckle blowout preventer through the butting flange plate along the axial inner side of the hydraulic drive butting cylinder; the butt joint clamp of the liquid drive butt joint barrel is matched with the buckle channel of the blowout prevention body, and quick and accurate butt joint between the liquid drive butt joint barrel and the blowout prevention body is achieved.

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