Integrated iron roughneck and slurry collecting device thereof

Abstract

The utility model discloses an integrated iron roughneck and a mud collecting device thereof, the integrated iron roughneck and the mud collecting device thereof comprise an iron roughneck and a mud collecting device, a back-up wrench of the iron roughneck comprises a left connecting rod, a left pull rod, a right connecting rod and a right pull rod which are symmetrically arranged along two sides of a jaw, and a clamping oil cylinder at the rear part of a wrench body; the telescopic motion of the clamping oil cylinder drives the back-up clamp to be opened and closed. According to the integrated mud collecting device, the mud blowout preventing and collecting function after pipe screwing-off is achieved while the pipe screwing-off and screwing-off operation function is achieved, mud collecting box single equipment does not need to be independently arranged, the space of a drill floor is saved, and the configuration cost is reduced; through structural optimization, the mud collecting device and the iron roughneck back-up clamp share the clamping oil cylinder, execution pieces such as an oil cylinder / an air cylinder and control pipelines and valves do not need to be additionally arranged, and a corresponding hydraulic or pneumatic system and a control system are simple, easy to operate, convenient to maintain and low in cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of petroleum drilling equipment, specifically is a kind of integrated iron driller and its mud collecting device. BACKGROUND

[0002] The telescopic arm iron driller can realize the make-up and break-out operation of tubulars, is the key matching equipment of land rig and offshore fixed platform rig, can effectively improve operation efficiency, liberate labor, increase operation safety;Mud collecting box is used for blowout prevention and collection of residual mud in tubular after break-out, effectively avoids drilling floor contamination, realizes mud recycling.In prior art, land and offshore platform rig are equipped with two single devices of iron driller and mud collecting box, occupy large drilling floor space, operation is complex;A small number of iron drillers integrate mud blowout prevention or mud collecting device, but need to add multiple oil cylinders or cylinder actuators and corresponding control pipelines and control valves on the basis of iron driller equipment, system is complex, operation is complicated, not easy to maintain, and cost is higher.

[0003] The integrated mud collecting device in the utility model realizes the mud blowout prevention and collection function after the make-up and break-out operation of tubular, does not need to separately configure mud collecting box single device, saves drilling floor space, reduces configuration cost;Through structure optimization, mud collecting device and iron driller back tong share clamping oil cylinder, without additional oil cylinder / cylinder and control pipeline and valve, corresponding hydraulic or pneumatic system and control system are simple, easy to operate, convenient to maintain, and cost is lower. UTILITARY MODEL CONTENT

[0004] The utility model aims at providing a kind of integrated iron driller and its mud collecting device, through the linkage design of back tong connecting rod mechanism and mud collecting device, complete mud collection simultaneously when tubular is made up and broken out, solve the problems of equipment redundancy and complex operation in prior art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of integrated iron driller and its mud collecting device, including iron driller and mud collecting device, the back tong of the iron driller includes left connecting rod, left pull rod, right connecting rod, right pull rod being symmetrically arranged along the two sides of jaw, and the clamping oil cylinder of the rear part of tong body;The opening and closing of back tong are driven by the telescopic movement of clamping oil cylinder;

[0006] The mud collecting device comprises left and right mud cylinders, left and right fixed arms, left and right movable arms, which are symmetrically arranged; the left fixed arm and the right fixed arm are connected with the left connecting rod and the right connecting rod of the back tongs through a plurality of first pin shafts; the front ends of the left fixed arm and the right fixed arm are hingedly connected with the left movable arm and the right movable arm through two groups of second pin shafts; the ends of the left movable arm and the right movable arm are hingedly connected with the left mud cylinder and the right mud cylinder through two groups of third pin shafts; the left pull rod and the right pull rod of the back tongs are hingedly connected with the left mud cylinder and the right mud cylinder through two groups of fourth pin shafts; the extension and retraction movement of the clamping oil cylinder synchronously drives the opening and closing movement of the back tongs and the mud collecting device, so that the linkage of the drill tool clamping and the mud collecting functions is realized.

[0007] Preferably, the front ends of the left connecting rod and the right connecting rod are each provided with two groups of connecting holes for connecting the left fixed arm and the right fixed arm.

[0008] Preferably, the front ends of the left pull rod and the right pull rod are each provided with a group of connecting holes for connecting the left mud cylinder and the right mud cylinder.

[0009] Preferably, the rear ends of the left fixed arm and the right fixed arm are provided with two groups of connecting holes, and the front ends are provided with a group of connecting holes, for connecting the left connecting rod, the right connecting rod, the left movable arm and the right movable arm.

[0010] Preferably, the mud collecting device is provided with four groups of aligning bushings and clamping plates, which are located at the hinged positions of the left pull rod and the left mud cylinder, the right connecting rod and the right mud cylinder, the left fixed arm and the left movable arm, and the right fixed arm and the right movable arm, and the concentric sealing of the left and right mud cylinders is realized by adjusting the eccentric amount of the aligning bushing.

[0011] Preferably, the middle part of the aligning bushing is provided with four operation holes, and the lower part is provided with six clamping grooves, the four operation holes are convenient for inserting a tool for rotating the aligning bushing; the clamping plate is provided with a contact surface matched with the clamping groove and an arc bolt mounting groove, and the position of the aligning bushing is fixed by locking with bolts.

[0012] Preferably, the upper and lower ends of the left mud cylinder and the right mud cylinder are provided with arc-shaped sealing plates, pressing plates and sealing blocks for dynamic sealing between the cylinder body and the drill tool; the closed end of the right mud cylinder is provided with a dovetail groove, and a trapezoidal cross-section sealing strip is embedded in the dovetail groove, so as to ensure the sealing property when the left and right cylinder bodies are closed.

[0013] Preferably, the bottom of the left mud cylinder and the right mud cylinder is provided with a flange joint for connecting a mud collecting pipe to realize directional flow guiding of mud.

[0014] The working process of the utility model is as follows:

[0015] The upper and lower drill tools connected together are located at a wellhead position, after the iron roughneck finishes the drill tool unbuckling, the iron roughneck automatically retreats a certain distance as a whole, so that the mud collecting device reaches the calibrated wellhead position, the back tong clamping oil cylinder extends, drives the left connecting rod, the right connecting rod, the left pull rod and the right pull rod to rotate, thereby driving the left fixed arm, the right fixed arm, the left movable arm, the right movable arm, the left mud cylinder and the right mud cylinder to rotate, after the clamping oil cylinder completely extends, the left mud cylinder and the right mud cylinder are completely closed to be a whole circle, effective sealing of the drill tool and the mud collecting device is realized, at this time, the drilling rig lifting equipment lifts the upper drill tool, so that the upper and lower drill tools are separated by a certain distance and then are suspended, at this time, the mud remaining in the drill tool flows out to the mud cylinder and is collected to a specific position through the bottom mud collecting pipe, so that the mud blowout prevention and collection are realized.

[0016] The beneficial effects of the utility model are as follows:

[0017] (1) The utility model adds the mud collecting device on the basis of the traditional telescopic arm iron roughneck, realizes the mud blowout prevention and collection function of the pipe tool after unbuckling, reduces the single equipment configuration of the mud blowout prevention box, saves the cost, saves the space on the drilling platform.

[0018] (2) The mud collecting device and the back tong of the iron roughneck share the clamping oil cylinder, the mud collecting device does not need to add hydraulic or pneumatic actuators, pipelines and control valves, the system is simple, operation and maintenance are convenient, and the cost is low; the self-aligning bushing cooperates with the clamping plate, ensures the concentricity and the sealing property of the mud cylinder, the modular sealing structure is suitable for different drill tool sizes, and the universality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2 It is a back tong and mud collecting device opening state schematic view;

[0021] Figure 3 It is a back tong and mud collecting device closing state schematic view;

[0022] Figure 4 It is a back tong connecting rod and pull rod connecting structure schematic view;

[0023] Figure 5 It is a self-aligning bushing and clamping plate assembly schematic view;

[0024] Figure 6 It is a mud collecting device sealing assembly schematic view;

[0025] Figure 7Figure 1 is a perspective view of the mud collecting device in closed state;

[0026] Figure 1 is a perspective view of the mud collecting device in closed state; DETAILED DESCRIPTION

[0027] The utility model will be explained further in detail below in combination with the drawings.

[0028] As Figure 1 shown in a kind of integrated iron drill and its mud collecting device, including iron drill 1 and mud collecting device 2, it is characterized in that: the back tong 11 of the iron drill 1 includes left connecting rod 111, left pull rod 112, right connecting rod 113, right pull rod 114, which are symmetrically arranged along the two sides of the mouth, and the clamping oil cylinder 115 in the rear part of the tong body;The extension and retraction movement of clamping oil cylinder 115 drives the opening and closing of back tong 11;Mud collecting device 2 includes left mud cylinder 201, right mud cylinder 202, left fixed arm 203, right fixed arm 204, left movable arm 205, right movable arm 206, which are symmetrically arranged;The left fixed arm 203 and the right fixed arm 204 are connected with the left connecting rod 111 and the right connecting rod 113 of back tong respectively by first pin shaft 207;The front end of the left fixed arm 203 and the right fixed arm 204 is hinged with left movable arm 205 and right movable arm 206 respectively by two groups of second pin shaft 208;The tail end of the left movable arm 205 and the right movable arm 206 is hinged with left mud cylinder 201 and right mud cylinder 202 respectively by two groups of third pin shaft 209;The left pull rod 112 and the right pull rod 114 of back tong are hinged with left mud cylinder 201 and right mud cylinder 202 respectively by two groups of fourth pin shaft 210;The extension and retraction movement of clamping oil cylinder 115 synchronously drives the opening and closing action of back tong 11 and mud collecting device 2, realizes the linkage of drilling tool clamping and mud collecting function.

[0029] The front end of left connecting rod 111 and right connecting rod 113 is respectively provided with two groups of connecting holes, for connecting left fixed arm 203 and right fixed arm 204.The front end of left pull rod 112 and right pull rod 114 is respectively provided with a group of connecting holes, for connecting left mud cylinder 201 and right mud cylinder 202.

[0030] The rear end of the left fixed arm 203 and the right fixed arm 204 is provided with two groups of connecting holes, and the front end is provided with a group of connecting holes, which are used for connecting the left connecting rod 111, the right connecting rod 113, the left movable arm 205 and the right movable arm 206.

[0031] The mud collecting device 2 is provided with four groups of aligning bushings 211 and clamping plates 212, which are respectively located at the hinged positions of the left pull rod 112 and the left mud cylinder 201, the right pull rod 113 and the right mud cylinder 202, the left fixed arm 203 and the left movable arm 205, and the right fixed arm 204 and the right movable arm 206, and the concentric sealing of the left and right mud cylinders is realized by adjusting the eccentric amount of the aligning bushing.

[0032] The upper and lower ends of the left mud cylinder 201 and the right mud cylinder 202 are provided with arc-shaped sealing plates 213, pressing plates 214 and sealing blocks 215, which are used for dynamic sealing between the cylinder body and the drilling tool.

[0033] The working process of the utility model is as follows:

[0034] The upper and lower two drilling tools connected together are located at the wellhead position, after the iron driller 1 completes the disconnection of the drilling tool, the iron driller 1 automatically retreats a certain distance as a whole, so that the mud collecting device 2 reaches the standard wellhead position, the back clamp clamping oil cylinder 115 extends, drives the left connecting rod 111, the right connecting rod 113, the left pull rod 112 and the right pull rod 114 to rotate, thereby driving the left fixed arm 203, the right fixed arm 204, the left movable arm 205, the right movable arm 206, the left mud cylinder 201 and the right mud cylinder 202 connected therewith to rotate, after the back clamp clamping oil cylinder 115 completely extends, the left mud cylinder 201 and the right mud cylinder 202 completely close to a whole circle, the effective sealing of the drilling tool and the mud collecting device 2 is realized, at this time, the drilling rig lifting equipment lifts the upper drilling tool, so that the upper and lower drilling tools are separated by a certain distance and then hover, at this time, the mud remaining in the drilling tool flows out to the mud cylinder, and is collected to a specific position through the mud collecting pipe 217 at the bottom, so that the mud blowout and collection are realized.

[0035] The mud collecting device is driven to open and close by the back clamp tight oil cylinder, and no additional executing element is needed; the aligning bushing cooperates with the clamping plate, and the concentricity and the sealing property of the mud cylinder closing are ensured; the modular sealing structure is adapted to different drill sizes, and the universality is improved.

[0036] The above is only the preferred example of the utility model. It should be pointed out that for ordinary skilled person in the art, under the technical inspiration provided by the utility model, as the common knowledge in the mechanical field, other equivalent variants and improvements can also be made, and should be regarded as the protection range of the utility model.

Claims

1. An integrated iron roughneck and mud collection device comprising an iron roughneck (1) and a mud collection device (2), characterized in that: The back clamp (11) of the iron roughneck (1) comprises a left connecting rod (111), a left pull rod (112), a right connecting rod (113), a right pull rod (114) symmetrically arranged along both sides of the jaw, and a clamping oil cylinder (115) at the back of the jaw body; the extension and retraction of the clamping oil cylinder (115) drives the opening and closing of the back clamp (11); The mud collecting device (2) comprises left and right mud cylinders (201, 202), left and right fixed arms (203, 204), left and right movable arms (205, 206) symmetrically arranged; the left and right fixed arms (203, 204) are connected with the left and right connecting rods (111, 113) of the back clamp through a first pin shaft (207); the front ends of the left and right fixed arms (203, 204) are hingedly connected with the left and right movable arms (205, 206) through two groups of second pin shafts (208); the ends of the left and right movable arms (205, 206) are hingedly connected with the left and right mud cylinders (201, 202) through two groups of third pin shafts (209); the left and right pull rods (112, 114) are hingedly connected with the left and right mud cylinders (201, 202) through two groups of fourth pin shafts (210); the extension and retraction of the clamping oil cylinder (115) synchronously drives the opening and closing of the back clamp (11) and the mud collecting device (2), realizing the linkage of the drill tool clamping and mud collecting functions.

2. An integrated iron roughneck and mud collection apparatus as defined in claim 1, wherein: The front ends of the left and right connecting rods (111, 113) are respectively provided with two groups of connecting holes for connecting the left and right fixed arms (203, 204).

3. An integrated iron roughneck and mud collection apparatus as defined in claim 1 or 2, wherein: The front ends of the left and right pull rods (112, 114) are respectively provided with a group of connecting holes for connecting the left and right mud cylinders (201, 202).

4. An integrated iron roughneck and mud collection apparatus as defined in claim 3, wherein: The rear ends of the left and right fixed arms (203, 204) are provided with two groups of connecting holes, and the front ends are provided with a group of connecting holes for connecting the left and right connecting rods (111, 113) and the left and right movable arms (205, 206).

5. An integrated iron roughneck and mud collection apparatus as defined in claim 4, wherein: The mud collecting device (2) is provided with four groups of aligning bushings (211) and clamping plates (212) located at the hinged positions of the left pull rod (112) and the left mud cylinder (201), the right connecting rod (113) and the right mud cylinder (202), the left fixed arm (203) and the left movable arm (205), and the right fixed arm (204) and the right movable arm (206), and the concentric sealing of the left and right mud cylinders is realized by adjusting the eccentricity of the bushings.

6. An integrated iron roughneck and its mud collection apparatus of claim 5, wherein: The middle part of the aligning bushing (211) is provided with four operation holes, and the lower part is provided with six clamping grooves; the four operation holes are convenient for inserting a tool for rotating the aligning bushing (211); the clamping plate (212) is provided with a contact surface matched with the clamping groove and an arc bolt mounting groove, and the position of the aligning bushing (211) is fixed by the bolt locking.

7. An integrated iron roughneck and mud collection apparatus as defined in claim 6, wherein: The upper and lower ends of the left mud barrel (201) and the right mud barrel (202) are provided with arc-shaped sealing plates (213), pressing plates (214) and sealing blocks (215) for dynamic sealing between the barrel and the drilling tool; the closed end of the right mud barrel (202) is provided with a dovetail groove and a trapezoidal cross-section sealing strip (216) embedded in the dovetail groove, so as to ensure the sealing property when the left barrel and the right barrel are closed.

8. An integrated iron roughneck and its mud collection apparatus of claim 7, wherein: The bottom of the left mud barrel (201) and the right mud barrel (202) is provided with a flange joint for connecting a mud collecting pipe (217) to realize directional flow guiding of mud.

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