Connecting device for measuring working fluid level of producing well

Abstract

The working fluid level measuring and connecting device comprises a wellhead connecting piece, a steering connecting unit and a testing valve connecting piece which are connected in sequence. The connecting device for measuring the working fluid level of the producing well can meet the working requirements of maintenance of an oil-water well and testing of the working fluid level of the oil well, is convenient to disassemble, and has higher functionality and portability.

Description

Technical Field

[0001] The invention relates to the technical field of oil well testing, and in particular to a dynamic liquid level measuring connection device for an oil well. Background Art

[0002] As the oil field enters the production and development stage, the dynamic liquid level monitoring of oil wells becomes an important production data for oil well maintenance and oil field stable production. Therefore, the testing and recording of dynamic liquid level data has also become an important task in daily production and operation. According to the current oil and water well management regulations, the dynamic liquid level data of oil wells must be measured at least twice a month. Due to the characteristics of oil and water wells, most oil field production wells are equipped with casing pressure devices. During each dynamic liquid level measurement operation, the casing pressure control valve needs to be opened and closed four times, the casing pressure device and the wellhead connector need to be disassembled and assembled four times, and the pressure needs to be relieved and vented twice. The operation of the employees on the job is cumbersome and laborious, and it is easy to cause damage to the pressure gauge of the casing pressure device. After the operation is completed, oil and water media will remain at the wellhead, which is prone to summer blockage and winter freezing. Summary of the invention

[0003] The purpose of the present invention is to provide an oil well dynamic liquid level measurement connection device, which can meet the working requirements of oil and water well maintenance and oil well dynamic liquid level testing, and is convenient to disassemble, and has stronger functionality and portability.

[0004] The technical solution adopted by the present invention is that the dynamic liquid level measurement connection device of the oil well comprises a wellhead connection piece, a steering connection unit and a test valve connection piece which are connected in sequence.

[0005] The present invention is also characterized in that

[0006] The wellhead connection is a wellhead connector joint.

[0007] The test valve connection piece is a test valve connection joint.

[0008] The steering connection unit includes an elbow and a snap-in quick connector. One end of the elbow is threadedly connected to one end of the wellhead connector, the other end of the elbow is snap-connected to one end of the snap-in quick connector, and the other end of the snap-in quick connector is snap-connected to the test valve connection connector.

[0009] The elbow is a 120° elbow.

[0010] The beneficial effects of the present invention are:

[0011] (1) The device of the present invention is suitable for the dynamic liquid level measurement work in the process of oil well production. The dynamic liquid level measurement connection device of the oil well has a simple and practical structure, is easy and quick to install, does not change the existing wellhead gathering and transportation process, does not require dynamic welding, and is highly practical. It solves the many drawbacks of the dynamic liquid level measurement work of oil wells for many years, which is cumbersome and laborious, easily causing damage to the casing pressure device and pressure gauge, and the casing pressure device is prone to blockage in summer and freezing in winter, which complicates the operating procedures and has great safety hazards. The use of the dynamic liquid level measurement connection device of the oil well can effectively reduce the workload of employees, save equipment costs, prevent environmental pollution, and has good prospects for on-site promotion. The device can meet the work requirements of oil and water well maintenance and oil well dynamic liquid level testing, and is easy to disassemble, with stronger functionality and portability.

[0012] (2) After searching, no similar technology was found to the device of the present invention, so the research and development of the dynamic liquid level measurement connection device for oil wells was carried out, and the device was promoted and applied on site. The device has the following characteristics: simple and reasonable operation, high safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the device of the present invention.

[0014] In the figure, 1. Wellhead connector joint, 2. Elbow, 3. Snap-in quick connector, 4. Test valve connection joint. DETAILED DESCRIPTION

[0015] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] The present invention provides a dynamic liquid level measurement connection device for oil wells, such as Figure 1 As shown, it includes a wellhead connector, a steering connector unit and a test valve connector which are connected in sequence.

[0017] The wellhead connection piece is a wellhead connector joint 1. The port size of the wellhead connector joint 1 is φ65 mm.

[0018] The test valve connection piece is a test valve connection joint 4. The two port sizes of the test valve connection joint 4 are φ32 mm and φ36 mm respectively.

[0019] The steering connection unit includes an elbow 2 and a snap-in quick connector 3, one end of the elbow 2 is threadedly connected to one end of the wellhead connector joint 1, the other end of the elbow 2 is snap-connected to one end of the snap-in quick connector 3, and the other end of the snap-in quick connector 3 is snap-connected to the test valve connection joint 4.

[0020] Elbow 2 is a 120° elbow.

[0021] The φ65 wellhead connector joint 1 is used to install and connect the oil well dynamic liquid level tester; the 120° elbow 2 realizes the effective distance between the instrument and the wellhead and the wellhead sealer without affecting the installation and operation of the instrument and reducing the influence of the original 90° bend in the original dynamic liquid level measurement process on the test data; the elbow 2 snap-in quick connector 3 realizes the quick installation between the device and the wellhead connector joint 1 (the special quick connector for well control sealer can withstand a pressure of 35MPa); the φ32 / 36 test valve connector 4 is used to connect the oil well wellhead test gate.

[0022] The method of using the dynamic liquid level measuring connection device for oil production wells of the present invention is as follows: most of the current machine-produced wellheads are eccentric wellheads, and test valves are installed above the wellhead plane. The test valve is located at the top and is in the same space as the casing where the casing pressure device is located. There is no difference in the measured dynamic liquid level. Due to the gas top principle, no oil and water medium is retained in this part, and it is not easily affected by temperature to cause blockage in summer and freezing in winter. It only needs to invent and manufacture a connecting component with the same specification as the test valve and connect it to the liquid level tester to realize rapid acquisition of oil production well liquid level data. On-site operation is convenient and quick, and the labor intensity of employees on the job is greatly reduced.

[0023] Example 1

[0024] The invention discloses a dynamic liquid level measuring connection device for an oil production well, comprising a wellhead connection piece, a steering connection unit and a test valve connection piece which are connected in sequence.

[0025] The wellhead connection piece is a wellhead connector joint 1. The port size of the wellhead connector joint 1 is φ65 mm.

[0026] The test valve connection piece is a test valve connection joint 4. The sizes of two ports of the test valve connection joint 4 are φ32 mm and φ36 mm respectively.

[0027] The steering connection unit includes an elbow 2 and a snap-in quick connector 3, one end of the elbow 2 is threadedly connected to one end of the wellhead connector joint 1, the other end of the elbow 2 is snap-connected to one end of the snap-in quick connector 3, and the other end of the snap-in quick connector 3 is snap-connected to the test valve connection joint 4.

[0028] Elbow 2 is a 120° elbow.

[0029] Example 2

[0030] The invention discloses a dynamic liquid level measuring connection device for an oil production well, comprising a wellhead connection piece, a steering connection unit and a test valve connection piece which are connected in sequence.

[0031] The wellhead connection piece is a wellhead connector joint 1. The port size of the wellhead connector joint 1 is φ65 mm.

[0032] The test valve connection piece is a test valve connection joint 4. The two port sizes of the test valve connection joint 4 are φ32 mm and φ36 mm respectively.

[0033] The steering connection unit includes an elbow 2 and a snap-in quick connector 3, one end of the elbow 2 is threadedly connected to one end of the wellhead connector joint 1, the other end of the elbow 2 is snap-connected to one end of the snap-in quick connector 3, and the other end of the snap-in quick connector 3 is snap-connected to the test valve connection joint 4.

[0034] Example 3

[0035] The invention discloses a dynamic liquid level measuring connection device for an oil production well, comprising a wellhead connection piece, a steering connection unit and a test valve connection piece which are connected in sequence.

[0036] The wellhead connection piece is a wellhead connector joint 1. The port size of the wellhead connector joint 1 is φ65 mm.

[0037] The test valve connection piece is a test valve connection joint 4. The two port sizes of the test valve connection joint 4 are φ32 mm and φ36 mm respectively.

[0038] Example 4

[0039] The invention discloses a dynamic liquid level measuring connection device for an oil production well, comprising a wellhead connection piece, a steering connection unit and a test valve connection piece which are connected in sequence.

[0040] The wellhead connection piece is a wellhead connector joint 1. The port size of the wellhead connector joint 1 is φ65 mm.

Claims

1. Moving liquid level measurement connection device for oil production well, Characterized in that, It includes a wellhead connector, a steering connection unit and a test valve connector connected in sequence.

2. The moving liquid level measurement connection device for oil production well according to claim 1, Characterized in that, The wellhead connector is a wellhead connector joint (1).

3. The moving liquid level measurement connection device for oil production well according to claim 2, Characterized in that, The test valve connector is a test valve connection joint (4).

4. The moving liquid level measurement connection device for oil production well according to claim 3, Characterized in that, The steering connection unit includes an elbow (2) and a snap-in quick connector (3). One end of the elbow (2) is threadedly connected to one end of the wellhead connector joint (1), the other end of the elbow (2) is snap-connected to one end of the snap-in quick connector (3), and the other end of the snap-in quick connector (3) is snap-connected to the test valve connection joint (4).

5. The moving liquid level measurement connection device for oil production well according to claim 3, Characterized in that, The elbow (2) is a 120° elbow.

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