Automatic recovery device for leaked oil at wellhead of oil pumping unit

Abstract

A welding hoop is fixedly arranged in a center hole of a recycling disc, a blowout prevention box is installed in the center of the recycling disc, a coupling is connected with a tee joint, a lower pipeline of the tee joint is connected with a production pipe column, and the production pipe column is connected with a pipeline connecting bent pipe. And the valve is connected with a short connecting pipe which is fixedly connected with an opening in the recovery disc. During working, oil flowing into the blowout prevention box from a lower pipeline flows into the recovery disc below, the recovery disc is slightly inclined, the oil in the recovery disc flows into the connected short circuit and then flows into a production pipe column after the valve is opened, and the oil is prevented from leaking outside to cause pollution and waste.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oil well construction technical field relates to a recovery device, concretely relates to an automatic recovery device for oil leakage of pumping unit wellhead. BACKGROUND

[0002] In the oil well production process of Nanniwanchang Oil Production Plant, the polished rod sealing ring is a dynamic sealing member for sealing the communication between the sealing box and the oil well during the movement of the polished rod. After the sealing member wears out, the pressure in the oil well will carry the oil and gas in the well out from the outside of the sealing ring, causing oil leakage at the wellhead, polluting the environment, wasting resources, and greatly affecting production work. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the utility model aims to provide an automatic recovery device for oil leakage of pumping unit wellhead, which makes an oil collection disc for the blowout prevention box coupling, achieving the purposes of clean production and reducing labor intensity.

[0004] In order to achieve the above-mentioned purposes, the utility model adopts the technical scheme of:

[0005] An automatic recovery device for oil leakage of pumping unit wellhead, comprising a recovery disc (1), characterized in that the center hole of the recovery disc (1) is fixedly welded with a coupling (2), the center of the recovery disc (1) is installed with a blowout prevention box (3), the coupling (2) is linked with a tee joint (4), the tee joint (4) is connected with a production pipe string link (5) through a pipeline, and the production pipe string link (5) is connected with an elbow (6) through a pipeline; the elbow (6) is connected with a valve (7), and the valve (7) is connected with a short connecting pipe (8) fixedly connected with an opening in the recovery disc (1).

[0006] The connection between the valve (7), the short connecting pipe (8), the elbow (6), the production pipe string link (5), the tee joint (4), and the coupling (2) adopts threaded connection and sealing.

[0007] The valve (7) and the elbow (6) are connected with a rubber pipe, and each of the upper and lower rubber pipes is fastened with a clamp.

[0008] The utility model has the advantages of:

[0009] The annual effective recovery of crude oil of a single well is about 20 kg, and the cost is saved by 76 yuan. At present, there are 1200 oil wells in our team. If the project is fully implemented, the application of the project in 12 oil production teams in the whole plant is expected to save economic benefits of 91,000 yuan / year. At the same time, the occurrence of environmental pollution can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a structural schematic view of the utility model.

[0011] Figure 2 It is an entity view of the utility model.

[0012] Wherein, 1 is a recovery disc; 2 is a coupling; 3 is a blowout box; 4 is a tee; 5 is a production string link; 6 is an elbow; 7 is a valve; 8 is a short pipe. DETAILED DESCRIPTION

[0013] The utility model is further described below in combination with the drawings.

[0014] As shown in Figure 1 , 2 An automatic oil leakage recovery device for pumping well mouth, comprising a recovery disc (1), characterized in that the center hole of the recovery disc (1) is fixedly welded with a coupling (2), the center of the recovery disc (1) is installed with a blowout box (3), the coupling (2) is linked with a tee (4), the lower pipeline of the tee (4) is connected with a production string link (5), one pipeline of the production string link (5) is connected with an elbow (6); the elbow (6) is connected with a valve (7), and the valve (7) is connected with a short pipe (8) fixedly connected with an opening in the recovery disc (1).

[0015] The connection between the valve (7), the short pipe (8), the elbow (6), the production string link (5), the tee (4) and the coupling (2) is achieved by threaded connection and sealing.

[0016] The valve (7) and the elbow (6) are connected with a rubber pipe, and one clamp is fastened above and below.

[0017] The device is composed of two parts: one part is a disc with a diameter of 480mm and a height of 155mm, a coupling with a diameter of 73mm is welded at the center position, a blowout box is installed on the upper surface, a tee and a production string link are installed on the lower surface; the other part is that an opening is formed on the inner edge of the recovery disc, a short connection with a diameter of 60mm is welded on the outer side, a DN50 valve is installed on the lower surface, a rubber pipe with a diameter of 60mm is linked, one clamp is fastened above and below to prevent oil and water from leaking outside the linking point, the short connection and the elbow with a diameter of 50mm are linked with the low-pressure port of the well cover, and when oil leaks, the device automatically flows into the oil well by using the action of liquid gravity, thereby being modified into an automatic oil leakage recovery device for pumping well mouth.

[0018] The pumping machine is parked at a suitable position, the brake is tightened, the unloading square card is hit, the horse head rope suspension and the blowout box assembly are removed, the 73 linking coupling is removed, the recovery disc is installed on the tee through the oil rod, the blowout box assembly, the suspension and the horse head rope are installed in sequence, the horse head is hung, the short connection is welded on the lower side edge of the recovery disc, the ball valve, the rubber pipe and the elbow are installed, and then the other end is connected with the low-pressure double-head four-way well cover interface which is modified in advance, so that the well mouth pressure is reduced, the oil leakage phenomenon is reduced, the purpose of clean production and labor intensity reduction is achieved.

[0019] When working, the oil flow from the blowout preventer box to the lower recovery disc, the recovery disc is slightly inclined, the oil in it flows to the connected short circuit, and then flows into the production pipe column after opening the valve, preventing oil from leaking outside, causing pollution and waste.

Claims

1. An automatic oil leakage recovery device for a pumping unit wellhead, comprising a recovery disc (1), characterized in that, Recycling disc (1) center hole fixed welding collar (2), recycling disc (1) center installation blowout preventer box (3), collar (2) link tee (4), tee (4) lower pipeline connection production pipe string link (5), production pipe string link (5) one pipeline connection elbow (6); elbow (6) connection valve (7), valve (7) connection recycling disc (1) inner opening fixed short pipe (8); valve (7) and elbow (6) between the connection of rubber pipe, one clamp above and below fastening.

2. The automatic oil leakage recovery device for the pumping unit wellhead according to claim 1, characterized in that, The connection between the valve (7), the short pipe (8), the elbow (6), the production pipe string link (5), the tee (4) and the collar (2) is screw connection, and sealing is performed.

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