Hypercoagulated thick oil bailing oil extraction device

Abstract

The utility model relates to the technical field of bailing oil extraction, and provides a high-coagulation thick oil bailing oil extraction device which comprises a bailing device and a wellhead device. The wellhead device comprises a wellhead connecting cylinder; the wellhead connecting cylinder is used for being mounted at a wellhead; the bailing device comprises an oil bailing puller, a connecting rod, a hook hinging seat, a hook, a horseshoe clamping ring and a counterweight connector; the bottom end of the oil bailing swab is connected with the top end of the connecting rod; a hook hinging seat is arranged at the bottom end of the counterweight rod; a hook is hinged to the hook hinging seat; a hanging seat is arranged at the top end of the counterweight connector and is used for being connected with a hook; an annular groove is formed in the counterweight connector; the bottom end of the balance weight connector is used for being connected with at least one balance weight rod. The oil bailing swab, the connecting rod and the hook hinging seat are arranged in the wellhead connecting cylinder; and the counterweight connector and the counterweight lever are always arranged in the wellhead. The oil extraction device can save oil extraction time and improve oil extraction efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bailing oil production, especially to a high condensate heavy oil bailing oil production device. BACKGROUND

[0002] Compared with pumping oil production, the bailing oil production process has the advantages of lower oil production cost and more obvious economic benefits in low-yield oil fields, low-abundance oil fields, scattered wells and low-efficiency well areas in the middle and high water cut periods, so the bailing oil production process is widely used in domestic oil fields.

[0003] The existing bailing oil production equipment generally includes a bailing sucker rod, a plurality of counterweight rods and a bailing wellhead device, the bailing wellhead device is installed at the wellhead, and the bailing sucker rod is connected to the counterweight rod; during operation, the plurality of counterweight rods are sequentially lowered, the bailing sucker rod is connected, the bailing wellhead device is installed, and the bailing wellhead device is connected to the oil loading vehicle.

[0004] However, when high condensate reservoirs or heavy oil reservoirs are involved, due to the high freezing point or high viscosity of crude oil, the existing bailing oil production equipment has the following problems:

[0005] 1. Crude oil is easily attached to the inner wall of the bailing wellhead device, and after condensation, it hinders the downward speed of the bailing sucker rod, and even cannot be lowered, causing the bailing work to be difficult to carry out normally, and usually the number of counterweight rods needs to be increased to achieve the purpose of increasing weight; during oil production, the counterweight rods need to be lowered on site, and due to the insufficient lifting distance of the bailing vehicle suspending the bailing oil production equipment, when the number of counterweight rods is increased, each counterweight rod needs to be individually installed, and multiple people are needed to cooperate to complete the installation of each counterweight rod, resulting in time and labor consumption during the process of lowering the counterweight rods, high labor intensity, low bailing efficiency; and it is easy to cause the counterweight rods to fall into the well, injure personnel, etc., with high safety risk.

[0006] 2. The inner diameter of the bailing wellhead is small, the annulus with the bailing sucker rod is insufficient, the resistance increases during back pumping, the crude oil is easily attached to the upper section of the bailing wellhead device, causing the bailing sucker rod to condense in the bailing wellhead device, and also causing the bailing sucker rod to be blocked when lowered into the well. INVENTION CONTENTS

[0007] The utility model mainly solves the technical problems that the existing bailing oil production equipment needs to lower the counterweight rods on site during oil production, the process of lowering the counterweight rods consumes time and labor, the labor intensity is high, and the bailing efficiency is low, and provides a high condensate heavy oil bailing oil production device, a proper number of counterweight rods are lowered at one time, the counterweight connector and the counterweight rod are suspended at the wellhead of the oil well, and the counterweight rods do not need to be lowered on site during each bailing oil production operation, thereby saving oil production time and improving oil production efficiency.

[0008] The utility model provides a kind of high condensate heavy oil bailing oil production device, comprising: bailing device and wellhead device;

[0009] The wellhead device comprises a wellhead connecting cylinder, which is used for installation at a wellhead.

[0010] An oil outlet is arranged on the wellhead connecting cylinder, and the oil outlet is used for connecting with a pipeline of an oil loading vehicle.

[0011] The bailing device comprises an oil bailing sucker, a connecting rod, a hook hinged seat, a hook, a horseshoe ring and a weight connector.

[0012] The bottom end of the oil bailing sucker is connected with the top end of the connecting rod.

[0013] The bottom end of the connecting rod is provided with the hook hinged seat, and the hook is hinged on the hook hinged seat.

[0014] The top end of the weight connector is provided with a hooking seat, and the hooking seat is used for connecting with the hook.

[0015] An annular groove is arranged on the weight connector, the horseshoe ring is arranged in the annular groove, and the bottom end of the weight connector is used for connecting with at least one weight rod.

[0016] The oil bailing sucker, the connecting rod and the hook hinged seat are arranged in the wellhead connecting cylinder, and the weight connector and the weight rod are always arranged in the wellhead.

[0017] Preferably, the hook hinged seat and the hooking seat are in a Π shape.

[0018] Preferably, the bottom end of the oil bailing sucker has a convex end, and the top end of the connecting rod has a groove end.

[0019] The convex end of the oil bailing sucker is connected with the groove end of the connecting rod.

[0020] Preferably, the bottom end of the wellhead connecting cylinder is provided with a flange.

[0021] Preferably, the lower part of the wellhead connecting cylinder is provided with a supporting disc, and a plurality of supporting rod fixing members are arranged on the supporting disc.

[0022] Preferably, the top part of the wellhead connecting cylinder is provided with a sealing packing.

[0023] Compared with the prior art, the high-viscosity heavy oil bailing and oil extraction device has the following advantages:

[0024] 1. A suitable number of counterweight rods are pre-installed and connected to the counterweight connector. The horseshoe-shaped retaining ring is inserted into the annular groove, and the counterweight connector and counterweight rods are suspended at the wellhead to prevent the counterweight rods from falling into the well. Pre-installing the counterweight connector and counterweight rods prepares the well for oil production, eliminating the need to install counterweight rods on-site for each oil extraction operation, saving production time and improving efficiency. The increased weight of the counterweight rods also helps overcome downward resistance, facilitating smooth oil extraction. This reduces worker workload and improves safety. Preparation time for oil production is reduced from 2 hours to 0.5 hours. 2. This utility model's extraction device includes an oil extraction pump, connecting rod, hook hinge seat, hook, horseshoe retaining ring, and counterweight connector. This extraction device reduces crude oil backflow resistance and improves oil production efficiency. The wellhead device of this utility model allows for smoother crude oil backflow. The horseshoe retaining ring makes installation and removal quick, efficient, and safe.

[0025] 3. Increase the inner diameter of the wellhead connecting cylinder of the wellhead device to facilitate rapid oil return, effectively avoid blockage of the oil retrieval channel, and save the maintenance operation cost of re-establishing the oil retrieval channel. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the wellhead device in the high-pour-point oil extraction and production device provided by this utility model;

[0027] Figure 2 This is a schematic diagram of the lifting device in the high-viscosity oil lifting and production device provided by this utility model;

[0028] Figure 3 This is a disassembly diagram of the lifting device in the high-viscosity oil lifting and production device provided by this utility model;

[0029] Figure 4 This is a schematic diagram of the counterweight connector provided by this utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the hook provided by this utility model.

[0031] Reference numerals: 1. Oil extraction pump; 2. Connecting rod; 3. Hook hinge seat; 4. Hook; 5. Horseshoe shackle; 6. Counterweight connector; 7. Hanger; 8. Annular groove; 9. Wellhead connecting sleeve; 10. Support rod fixing component; 11. Flange; 12. Oil outlet; 13. Sealing packing. Detailed Implementation

[0032] In order to make the technical problems, the technical solutions and the technical effects solved by the utility model clearer, the utility model will be further described in detail below in combination with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the utility model, not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for convenience of description, not all the contents.

[0033] The utility model discloses a kind of high condensate thick oil bailing oil extraction devices, comprising: bailing device and wellhead device.

[0034] As shown in Figure 1 The wellhead device includes wellhead connecting cylinder 9;The wellhead connecting cylinder 9 is used to be installed in wellhead. The bottom end of the wellhead connecting cylinder 9 is provided with flange 11. The lower part of the wellhead connecting cylinder 9 is provided with support disc, and a plurality of support rod fixing members 10 are arranged on the support disc. Support rod fixing member 10 is used to fix the support rod of oil bailing vehicle (oil bailing vehicle is connected with bailing device, drives bailing device to lift, realizes oil extraction). The flange 11 of the wellhead connecting cylinder 9 is matched with the wellhead of oil bailing well, and is stably connected with the wellhead.

[0035] The top of the wellhead connecting cylinder 9 is provided with sealing packing 13. The wellhead connecting cylinder 9 is provided with oil outlet 12, and the oil outlet 12 is used to be connected with oil bailing vehicle pipeline. Residual crude oil in oil bailing vehicle pipeline can be returned to the deep part of oil well through oil outlet 12 as far as possible.

[0036] As shown in Figures 2-5 The bailing device includes oil bailing sucker rod 1, connecting rod 2, hook hinged seat 3, hook 4, horseshoe clamp ring 5 and counterweight connector 6.

[0037] The bottom end of the oil bailing sucker rod 1 is connected with the top end of the connecting rod 2. The bottom end of the oil bailing sucker rod 1 is connected with the top end of the connecting rod 2 through mortise and tenon structure. The connecting rod 2 plays a connecting role and also plays a role of increasing counterweight. The oil bailing sucker rod 1 and the connecting rod 2 can be quickly connected. Specifically, the bottom end of the oil bailing sucker rod 1 has protruding end, and the top end of the connecting rod 2 has recessed end. The protruding end of the oil bailing sucker rod 1 is connected with the recessed end of the connecting rod 2. Further, the annulus between the oil bailing sucker rod 1 and the connecting rod 2 is fusion welded, which is convenient for reducing the resistance of crude oil return.

[0038] The bottom end of the connecting rod 2 is provided with hook hinged seat 3. The hook 4 is hinged on the hook hinged seat 3. The top end of the counterweight connector 6 is provided with hook seat 7, and the hook seat 7 is used to be connected with the hook 4. The hook hinged seat 3 and the hook seat 7 are in "Π" type. The hook 4 is installed at the bottom end of the connecting rod 2 through the hook hinged seat 3, and can be quickly hung on the hook seat 7. The top end of the counterweight connector 6 adopts "Π" type hook seat, which can be quickly connected with the hook 4.

[0039] The counterweight connector 6 is provided with a ring-shaped groove 8 for placing the horseshoe-shaped ring 5, and the bottom end of the counterweight connector 6 is used for connecting at least one counterweight rod.

[0040] The well mouth connecting cylinder 9 is of a large diameter, and the oil bailing sucker rod 1, the connecting rod 2 and the hook hinged seat 3 are arranged in the well mouth connecting cylinder 9, and the hook 4 can be extended from the bottom end of the well mouth connecting cylinder 9. The counterweight connector 6 and the counterweight rod are always arranged in the well mouth. The counterweight connector 6 and the counterweight rod are hung in the well mouth for a long time, so that the counterweight rod does not need to be installed on site every time for bailing operation, the time for installing the counterweight rod is saved, and the operation efficiency is greatly improved. Meanwhile, the weight of the counterweight rod is increased, the downward resistance is easily overcome, the bailing operation is smoothly carried out, the installation link of the counterweight rod is reduced, and the safety risk is reduced. In actual production, the counterweight rod can be made by modifying the waste oil pipe, energy saving and cost saving are achieved.

[0041] When not in production, the horseshoe-shaped ring 5 is inserted into the ring-shaped groove 8, the peripheral size of the horseshoe-shaped ring 5 is slightly larger than the inner diameter of the well mouth, the counterweight connector 6 and the counterweight rod are hung in the well mouth through the horseshoe-shaped ring 5, and the counterweight connector 6 and the counterweight rod are prevented from falling into the well. The internal size of the horseshoe-shaped ring 5 is slightly larger than the outer diameter of the ring-shaped groove 8, and the horseshoe-shaped ring 5 is easily and quickly installed.

[0042] The high-viscosity heavy oil bailing and oil extraction device in the utility model is used in the following way:

[0043] According to the water content, the crude oil viscosity and the freezing point of a single well, a proper number of counterweight rods are lowered in advance, the counterweight connector 6 is connected to the counterweight rod, the horseshoe-shaped ring 5 is inserted into the ring-shaped groove 8, the counterweight connector 6 and the counterweight rod are hung in the well mouth of the oil well, and the counterweight rod is prevented from falling into the well. The counterweight connector 6 and the counterweight rod are lowered in advance, and the oil extraction is prepared, so that the counterweight rod does not need to be lowered on site every time for bailing and oil extraction operation, the oil extraction time is saved, and the oil extraction efficiency is improved.

[0044] Before the bailing and oil extraction operation, the oil bailing sucker rod 1 is connected to the connecting rod 2, the other end of the connecting rod 2 is connected to the hook hinged seat 3 through the fixing pin and the hook 4, and after the connection, the hook 4 is arranged in the well mouth connecting cylinder 9. During the bailing and oil extraction operation, the hook 4 is connected to the counterweight connector 6 arranged in the well mouth in advance, the horseshoe-shaped ring 5 is taken out, the well mouth connecting cylinder 9 is fixed in the well mouth through the flange 11, the oil outlet 12 of the well mouth connecting cylinder 9 is connected to the pipeline of the oil loading vehicle, the bailing device is driven by the oil bailing vehicle, and the bailing and oil extraction operation is started.

[0045] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the modification of the technical solutions recorded in the foregoing embodiments, or the equivalent replacement of part or all of the technical features, does not make the essence of the corresponding technical solution deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A high-viscosity heavy oil bailing and production device, characterized in that, The utility model relates to a wellhead device and a bailing device. The wellhead device comprises a wellhead connecting cylinder (9) for being installed on a wellhead. An oil outlet (12) is arranged on the wellhead connecting cylinder (9) and is used for being connected with a pipeline of an oil loading vehicle. The bailing device comprises an oil bailing sucker (1), a connecting rod (2), a hook hinged seat (3), a hook (4), a horseshoe clamp (5) and a counterweight connector (6). The bottom end of the oil bailing sucker (1) is connected with the top end of the connecting rod (2). The bottom end of the connecting rod (2) is provided with the hook hinged seat (3), and the hook hinged seat (3) is hinged with the hook (4). The top end of the counterweight connector (6) is provided with a hooking seat (7) for being connected with the hook (4). An annular groove (8) is arranged on the counterweight connector (6) and is used for placing the horseshoe clamp (5), and the bottom end of the counterweight connector (6) is used for being connected with at least one counterweight rod. The oil bailing sucker (1), the connecting rod (2) and the hook hinged seat (3) are arranged in the wellhead connecting cylinder (9), and the counterweight connector (6) and the counterweight rod are always arranged in the wellhead. The hook hinged seat (3) and the hooking seat (7) are in the shape of "Π".

2. The high pour point heavy oil bailing device according to claim 1, characterized in that, The bottom end of the oil bailing sucker (1) has a convex end, and the top end of the connecting rod (2) has a groove end.

3. The high pour point heavy oil bailing device according to claim 2, characterized in that, The convex end of the oil bailing sucker (1) is connected with the groove end of the connecting rod (2). The bottom end of the wellhead connecting cylinder (9) is provided with a flange (11).

4. The high pour point heavy oil bailing device according to claim 1, characterized in that, The lower part of the wellhead connecting cylinder (9) is provided with a supporting disc, and a plurality of supporting rod fixing members (10) are arranged on the supporting disc.

5. The high pour point heavy oil bailing device according to claim 4, characterized in that, The top part of the wellhead connecting cylinder (9) is provided with a sealing packing (13).

6. The high pour point heavy oil bailing device according to claim 5, characterized in that, ​

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