A drilling rig of the type having a derrick which is back inclined and a drawworks located on the rig floor

Abstract

The application discloses a petroleum drilling machine with a rear-inverted derrick and a drilling winch on a drilling platform, which comprises an upper platform assembly and a base connected in sequence, wherein the upper platform assembly is hinged with a base lifting hydraulic cylinder, the bottom end of the base lifting hydraulic cylinder is hinged with the base, the upper surface of the upper platform assembly is a drilling platform, the drilling platform is sequentially provided with a front derrick leg, a rear derrick leg and a drilling winch from front to back, the front derrick leg is hinged with a derrick through a front derrick leg, the rear derrick leg is hinged with the derrick through a rear derrick leg frame, the derrick is hinged with a piston rod of a derrick lifting hydraulic cylinder, the bottom end of the derrick lifting hydraulic cylinder is hinged with the base, and the derrick lifting hydraulic cylinder is used for lifting the derrick in a lying state with a high front and a low rear. The application can realize the integral transportation of the derrick under the rear-inverted condition through a derrick integral transportation device, and solves the problems of high transportation cost and low transportation efficiency caused by the use of a crane in the prior art.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of petroleum drilling rigs and workover rigs, and relates to a petroleum drilling rig with a rearwardly inclined derrick and a drilling winch located on a drilling floor. BACKGROUND

[0002] The conventional rearwardly inclined petroleum drilling rig structure type needs to remove the drilling winch before the derrick is lowered, and for fast-moving drilling rigs, the drilling rig base and the drilling winch cannot be moved and transported integrally, which increases one drilling winch moving and transporting unit. The winch needs to be removed and installed by a crane, which is high in transportation cost. In addition, the connection between the winch and the base is time-consuming and laborious to install and remove. All the above shortcomings together cause the problem of low efficiency of moving and transporting the drilling rig. SUMMARY

[0003] The present application aims to provide a petroleum drilling rig with a rearwardly inclined derrick and a drilling winch located on a drilling floor, which solves the problems of high transportation cost and low efficiency of moving and transporting in the prior art.

[0004] The technical scheme adopted by the present application is a petroleum drilling rig with a rearwardly inclined derrick and a drilling winch located on a drilling floor, comprising an upper platform assembly and a base connected in sequence, the upper platform assembly is hingedly connected with a base lifting hydraulic cylinder, the bottom end of the base lifting hydraulic cylinder is hingedly connected with the base, the upper surface of the upper platform assembly is a drilling floor, the drilling floor is sequentially provided with a derrick front leg, a derrick rear leg and a drilling winch from front to back, the derrick front leg is hingedly connected with a derrick through a derrick front leg, the derrick rear leg is hingedly connected with the derrick through a derrick rear leg frame, the derrick is hingedly connected with the piston rod of a derrick lifting hydraulic cylinder, the bottom end of the derrick lifting hydraulic cylinder is hingedly connected with the base, and the derrick lifting hydraulic cylinder is used to lift the derrick in a high front and low rear lying inclined state.

[0005] The present application is also characterized in that,

[0006] The derrick front leg and the derrick rear leg are both provided with two, the two derrick front legs and the two derrick rear legs are symmetrically distributed about the axis of the upper platform assembly, each derrick front leg is hingedly connected with one end of a derrick front leg, the other end of the derrick front leg is hingedly connected with the derrick near the front end position, the two derrick rear legs are hingedly connected with the derrick rear leg frame through a derrick rear leg pin shaft, and the derrick rear leg frame is further hingedly connected with the front part of the derrick. When the derrick is lifted to a vertical state, the derrick front leg and the derrick rear leg frame are supported on both sides of the bottom of the derrick.

[0007] A front upright column and a rear upright column are provided between the upper platform assembly and the base, the two ends of the front upright column are respectively hingedly connected with the upper platform assembly and the base, the connection position of the front upright column and the upper platform assembly is located directly below the derrick front leg, the two ends of the rear upright column are respectively hingedly connected with the upper platform assembly and the base, and the connection position of the rear upright column and the upper platform assembly is located directly below the derrick rear leg.

[0008] The front column and the rear column are both provided with two.

[0009] The upper platform assembly and the base are provided with a diagonal support rod, the two ends of the diagonal support rod are hinged with the upper platform assembly and the base respectively, and the diagonal support rod is located between the front column and the rear column.

[0010] The diagonal support rod is provided with two, and the two diagonal support rods are symmetrically distributed about the axis of the upper platform assembly.

[0011] The beneficial effects of the present application are:

[0012] The present application discloses a petroleum drilling machine with a rear-inverted derrick and a drilling winch located on a drilling platform, wherein the drilling winch is installed on the rear side of the drilling platform, and the derrick is lowered to a low installation position by using a hydraulic cylinder, and then the derrick is lowered to the low installation position by using the hydraulic cylinder to the rear side of the drilling machine (the direction of the winch), so that the derrick can be integrally moved by using a derrick integral moving device. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a side view of the petroleum drilling machine with a rear-inverted derrick and a drilling winch located on a drilling platform, wherein the derrick and the base are in low installation positions.

[0014] Figure 2 is a side view of the petroleum drilling machine with a rear-inverted derrick and a drilling winch located on a drilling platform, wherein the base is in a low installation position, and the derrick is lifted.

[0015] Figure 3 is a side view of the petroleum drilling machine with a rear-inverted derrick and a drilling winch located on a drilling platform, wherein the base is in a low installation position, and the derrick is lifted.

[0016] Figure 4 is a front view of the petroleum drilling machine with a rear-inverted derrick and a drilling winch located on a drilling platform.

[0017] In the figure, 1 is an upper platform assembly, 2 is a derrick front foot, 3 is a base lifting hydraulic cylinder, 4 is a base, 5 is a front column, 6 is a diagonal support rod, 7 is a derrick rear foot frame, 8 is a rear column, 9 is a drilling winch, 10 is a derrick lifting hydraulic cylinder, 11 is a derrick, 12 is a derrick rear foot pin shaft, and 13 is a derrick front leg. DETAILED DESCRIPTION

[0018] The present application will be described in detail below in combination with the drawings and specific embodiments.

[0019] This invention relates to an oil drilling rig with a rear-inverted derrick and the drilling winch located on the drilling platform, such as... Figures 1-4 As shown, the system includes an upper platform assembly 1 and a base 4 connected vertically. The upper platform assembly 1 is hinged to a base lifting hydraulic cylinder 3. The bottom end of the base lifting hydraulic cylinder 3 is hinged to the base 4. The upper surface of the upper platform assembly 1 is a drilling platform. The drilling platform is provided with a front support leg 2, a rear support leg, and a drilling winch 9 arranged sequentially from front to back. The front support leg 2 is hinged to the derrick 11 via the front leg 13. The rear support leg is hinged to the derrick 11 via the rear support leg frame 7. The piston rod of the derrick lifting hydraulic cylinder 10 is hinged to the derrick 11. The bottom end of the derrick lifting hydraulic cylinder 10 is hinged to the base 4. The derrick lifting hydraulic cylinder 10 is used to lift the derrick 11 in a horizontal, tilted position with the front higher than the rear.

[0020] There are two front supports 2 and two rear supports 2. The two front supports 2 and the two rear supports 2 are symmetrically distributed about the axis of the upper platform assembly 1. Each front support 2 is hinged to one end of a front leg 13 of the derrick. The other end of the front leg 13 is hinged to the derrick 11 near the front end. The two rear supports 2 are hinged to the rear support frame 7 of the derrick through the rear support pin 12. The rear support frame 7 of the derrick is also hinged to the front of the derrick 11. When the derrick 11 is raised to the vertical position, the front leg 13 and the rear support frame 7 of the derrick are supported on both sides of the bottom of the derrick 11.

[0021] A front column 5 and a rear column 8 are provided between the upper platform assembly 1 and the base 4. There are two front columns 5 and two rear columns 8. The two ends of the front column 5 are hinged to the upper platform assembly 1 and the base 4 respectively. The connection position between the front column 5 and the upper platform assembly 1 is located directly below the front support leg 2 of the derrick. The two ends of the rear column 8 are hinged to the upper platform assembly 1 and the base 4 respectively. The connection position between the rear column 8 and the upper platform assembly 1 is located directly below the rear support leg of the derrick.

[0022] Two inclined support rods 6 are provided between the upper platform assembly 1 and the base 4. The two inclined support rods 6 are symmetrically distributed along the axis of the upper platform assembly 1. The two ends of the inclined support rods 6 are hinged to the upper platform assembly 1 and the base 4 respectively, and the inclined support rods 6 are located between the front column 5 and the rear column 8.

[0023] The present invention discloses three operating conditions for an oil drilling rig with a rear-inverted derrick and the drilling winch located on the drilling platform: the derrick 11 and the upper platform assembly 1 are both in the low-position installation position; the upper platform assembly 1 is in the low-position installation position; the derrick 11 is in the lifting position; and the working position. The switching operation process between the three operating conditions is as follows:

[0024] 1) The oil drilling rig of the present invention is implemented from the working condition where the derrick 11 and the upper platform assembly 1 are both in the low-position installation position to the working condition where the upper platform assembly 1 is in the low-position installation position and the derrick 11 is raised, according to the following steps:

[0025] Step 1, the derrick lifting hydraulic cylinder 10 lifts the derrick 11, the derrick 11 rotates around the center line of the derrick rear leg pin shaft 12 until the front leg 13 of the derrick far from the end pin hole of the derrick is aligned with the pin hole of the front leg 2 and the connecting pin shaft is installed and connected, the derrick 11 is installed in place, see Figure 2 ;

[0026] Step 2, remove the upper end of the derrick lifting hydraulic cylinder 10 from the hinge pin shaft of the derrick 11, and place the derrick lifting hydraulic cylinder 10 in the position shown in Figure 3 .

[0027] 2) From the low position of the upper platform assembly 1 and the working condition after the derrick 11 is lifted to the working position, the following steps are implemented:

[0028] Step 1, the left and right base lifting hydraulic oil cylinders 3 lift the upper platform assembly 1, the upper platform assembly 1 pulls the front column 5 and the rear column 8 to rotate around the hinge pin shaft center respectively connected with the base 4, until the front column 5 and the rear column 8 are in vertical state; At the same time, the upper platform assembly 1 pushes the lower end of the inclined support rod 6 to slide on the base 4 until the center of the lower end pin hole of the inclined support rod 6 is aligned with the center of the pin hole on the base 4;

[0029] Step 2, connect the lower end pin hole of the inclined support rod 6 and the pin hole on the base 4 with the connecting pin shaft, thus the working position of the oil drilling rig of the present application is installed in place, see Figure 3 .

[0030] 3) From the working position to the low position of the upper platform assembly 1 and the working condition after the derrick 11 is lifted, the installation method is opposite to that in the above 2);

[0031] 4) From the low position of the upper platform assembly 1 and the working condition after the derrick 11 is lifted to the low position of the derrick 11 and the upper platform assembly 1, the installation method is opposite to that in the above 1).

[0032] From the above content, the typical features of the oil drilling rig with the derrick rearward and the drilling winch on the drilling platform surface are as follows:

[0033] 1) The lifting and lowering of the derrick 11 and the upper platform assembly 1 are realized by hydraulic cylinders respectively, the low position of the derrick 11 is backward, and the low position of the upper platform assembly 1 is forward;

[0034] 2) The drilling winch 9 is installed on the drilling platform surface behind the derrick 11, and the center line of the derrick rear leg pin shaft 12 is raised to a height suitable for the installation space of the drilling winch 9 through the derrick rear leg frame 7.

[0035] The oil drilling machine with the derrick rearwardly inclined and the drilling winch on the drilling platform surface is suitable for oil drilling machines and workover rigs of various specifications and driving types.

Claims

1. A petroleum drilling rig of the type having a derrick which is back-tilted and a drilling drawworks located on a rig floor, characterized in that, The application relates to a drilling rig, which comprises an upper platform assembly (1) and a base (4) connected in series, the upper platform assembly (1) is hinged with a base lifting hydraulic cylinder (3), the bottom end of the base lifting hydraulic cylinder (3) is hinged with the base (4), the upper surface of the upper platform assembly (1) is a drilling platform surface, the drilling platform surface is sequentially provided with a derrick front support (2), a derrick rear support and a drilling winch (9) from front to back, the derrick front support (2) is hinged with a derrick front leg (13) through the derrick front support (2), the derrick rear support is hinged with the derrick (11) through a derrick rear support frame (7), the derrick (11) is hinged with the piston rod of a derrick lifting hydraulic cylinder (10), the bottom end of the derrick lifting hydraulic cylinder (10) is hinged with the base (4), the derrick lifting hydraulic cylinder (10) is used for lifting the derrick (11) in a high-front-low-rear lying state, the lifting and lowering of the derrick (11) and the upper platform assembly (1) are respectively realized through hydraulic cylinders, the low-position installation position of the derrick (11) is backward, and the low-position installation position of the upper platform assembly (1) is forward. The derrick front support (2) and the derrick rear support are both provided with two, the two derrick front supports (2) and the two derrick rear supports are symmetrically distributed around the axis of the upper platform assembly (1), each derrick front support (2) is hinged with one end of a derrick front leg (13), the other end of the derrick front leg (13) is hinged with the derrick (11) close to the front end position, the two derrick rear supports are hinged with the derrick rear support frame (7) through a derrick rear support pin shaft (12), the derrick rear support frame (7) is further hinged with the front part of the derrick (11), when the derrick (11) is lifted to a vertical state, the derrick front leg (13) and the derrick rear support frame (7) are supported on both sides of the bottom of the derrick (11). The drilling winch (9) is installed on the drilling platform surface on the rear side of the derrick (11), the center line of the derrick rear support pin shaft (12) is raised to the height of the installation space of the drilling winch (9) through the derrick rear support frame (7).

2. The drilling rig of claim 1, wherein, The front column (5) and the rear column (8) are arranged between the upper platform assembly (1) and the base (4), the two ends of the front column (5) are respectively hinged with the upper platform assembly (1) and the base (4), the connection position of the front column (5) and the upper platform assembly (1) is located below the derrick front support (2), the two ends of the rear column (8) are respectively hinged with the upper platform assembly (1) and the base (4), and the connection position of the rear column (8) and the upper platform assembly (1) is located below the derrick rear support.

3. The drilling rig of claim 2 wherein, The front column (5) and the rear column (8) are both provided with two.

4. The drilling rig of claim 1 wherein, The inclined support rod (6) is arranged between the front column (5) and the rear column (8), the two ends of the inclined support rod (6) are respectively hinged with the upper platform assembly (1) and the base (4).

5. The drilling rig of claim 4 wherein, The inclined support rod (6) is provided with two, and the two inclined support rods (6) are symmetrically distributed around the axis of the upper platform assembly (1).

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