Underground double-pressure manometer mounting structure

Abstract

The utility model discloses an underground double pressure gauge installation structure which comprises an oil pipe, two ends of the oil pipe are respectively in threaded connection with an oil pipe coupling and a pressure sensing connector, the pressure sensing connector is provided with an installation hole communicated with the inside of the oil pipe, an oil pipe pressure sensing end on the lower portion of a pressure gauge is fixedly connected with the installation hole of the pressure sensing connector, and a fixing ring assembly is sleeved on the oil pipe. The fixing ring assembly comprises a first hoop, a second hoop and an adjusting semi-ring, the first hoop and the second hoop are hinged and fixed through a fixing screw, a semicircular groove is formed in the first hoop, the adjusting semi-ring is installed in the semicircular groove in a limited mode through a pin, and the pressure gauge is connected with the adjusting semi-ring in a clamped mode. According to the utility model, the oil pipe pressure and the annular pressure can be measured at the same time, and the first hoop and the second hoop can be fastened at any position of the oil pipe through the fixing screws, so that the installation of the pressure gauges with different lengths can be adapted, and the installation of the pressure gauges with different outer diameters can be adapted by replacing the adjusting semi-rings with different inner circle radiuses.

Description

Technical Field

[0001] The utility model relates to the technical field of downhole instrument structures, in particular to a downhole dual-pressure gauge installation structure. Background Art

[0002] Pressure is a key indicator in downhole oilfield data monitoring. Testing tubing pressure and casing annulus pressure is typically used to assess well conditions and adjust production processes accordingly. With the demand for continuous oilfield production, pressure gauges must be placed in the casing annulus to continuously monitor pressure changes downhole without disrupting the normal operation of the tubing center channel. Typically, pressure gauges from different manufacturers, or even from the same manufacturer, have varying outer diameters and lengths. This results in varying mounting configurations, repeated design iterations, and high costs. Summary of the Invention

[0003] In order to solve the above problems, the utility model provides a downhole dual-pressure pressure gauge installation structure, which can realize the measurement of tubing pressure and annulus pressure. At the same time, this structure can be flexibly adjusted to adapt to the installation of pressure gauges of different specifications.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a downhole dual-pressure pressure gauge installation structure, including an oil pipe, the two ends of the oil pipe are respectively threadedly connected to the oil pipe coupling and the pressure-sensing joint, the pressure-sensing joint is provided with a mounting hole connected to the inside of the oil pipe, the oil pipe pressure-sensing end at the lower part of the pressure gauge is fixedly connected to the mounting hole of the pressure-sensing joint, a fixing ring assembly is sleeved on the oil pipe, the fixing ring assembly includes a first clamp, a second clamp and an adjusting half ring, the first clamp and the second clamp are hinged and fixed by fixing screws, a semicircular groove is provided on the first clamp, the adjusting half ring is limited and installed in the semicircular groove by a pin, and the pressure gauge is clamped with the adjusting half ring.

[0005] The pressure gauge is provided with an annular pressure sensing end.

[0006] The first clamp is provided with a threaded through hole on one side of the semicircular groove, and the limit screw passes through the threaded through hole and moves radially along the semicircular groove.

[0007] The limiting screw and the fixing screw are covered with sealing rings.

[0008] The pressure sensing end of the pressure gauge is covered with a sealing ring.

[0009] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention adopts a fixing ring assembly to fix the oil pipe and the pressure gauge, and the first clamp and the second clamp of the fixing ring assembly can be fastened to any position of the oil pipe by fixing screws, thereby adapting to the installation of pressure gauges of different lengths, and by replacing the adjustment half rings with different inner circle radii, it can adapt to the installation of pressure gauges with different outer diameters. At the same time, the annular pressure sensing end of the pressure gauge and the lower oil pipe pressure sensing end connected to the pressure sensing joint can realize the measurement of the oil pipe pressure and the annular pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described below with reference to the accompanying drawings:

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 It is a partial cross-sectional view of the utility model;

[0013] In the figure: 1. Oil pipe; 2. Oil pipe coupling; 3. Pressure-sensing joint; 4. Pressure gauge; 41. Oil pipe pressure-sensing end; 42. Annulus pressure-sensing end; 5. First clamp; 6. Second clamp; 7. Adjusting half ring; 8. Fixing screw; 9. Limit screw. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0015] The following specific embodiments are used to describe the technical solution of the present invention in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments. Example

[0016] like Figures 1 to 2 As shown, the utility model provides a downhole dual-pressure pressure gauge installation structure, including an oil pipe 1, wherein both ends of the oil pipe 1 are threadedly connected to the oil pipe coupling 2 and the pressure sensing joint 3, the pressure sensing joint 3 is provided with a mounting hole connected to the inside of the oil pipe, and the oil pipe pressure sensing end 41 at the lower part of the pressure gauge 4 is fixedly connected to the mounting hole of the pressure sensing joint 3, and a fixing ring assembly is sleeved on the oil pipe 1, and the fixing ring assembly includes a first clamp 5, a second clamp 6 and an adjusting half ring 7, the first clamp 5 and the second clamp 6 are hinged and fixed by a fixing screw 8, a semicircular groove is provided on the first clamp 5, and the adjusting half ring 7 is installed in the semicircular groove by a pin limit, and the pressure gauge 4 is clamped with the adjusting half ring 7.

[0017] Specifically, the pressure gauge 4 is provided with an annular pressure sensing end 42 .

[0018] Specifically, the first clamp 5 is provided with a threaded through hole on one side of the semicircular groove, and the limit screw 9 passes through the threaded through hole and moves radially along the semicircular groove.

[0019] Specifically, the limit screw 9 and the fixing screw 8 are covered with sealing rings, and the pressure sensing end of the pressure gauge 4 is covered with a sealing ring.

[0020] Working principle: The first clamp 5 and the second clamp 6 of the fixed ring assembly can be fastened to any position of the oil pipe 1 by the fixing screw 8, so as to adapt to pressure gauges 4 of different lengths. By replacing the adjusting half ring 7 with different inner diameters, it can adapt to the installation of pressure gauges 4 with different outer diameters. The adjusting half ring 7 is fixed by a pin limit. After the pressure gauge 4 is placed on the adjusting half ring 7, the pressure gauge 4 is pressed against by twisting the limit screw 9 to ensure that the pressure gauge will not loosen during operation. The oil pipe pressure sensing end 41 at the lower part of the pressure gauge 4 measures the pressure inside the oil pipe. The pressure gauge is placed in the annulus of the oil casing as a whole and is provided with an annulus pressure sensing end 42, so the annulus pressure can be measured. The fixed ring assembly can be flexibly adjusted to adapt to the installation of pressure gauges 4 of different specifications, thereby reducing design pressure and reducing production costs.

[0021] In addition to the above-mentioned preferred embodiments, the present invention has other implementation methods. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A downhole dual-pressure gauge installation structure, comprising an oil pipe (1), characterized in that: The two ends of the oil pipe (1) are respectively threadedly connected to the oil pipe coupling (2) and the pressure-sensing joint (3); the pressure-sensing joint (3) is provided with a mounting hole communicated with the inside of the oil pipe; the oil pipe pressure-sensing end (41) at the lower part of the pressure gauge (4) is fixedly connected to the mounting hole of the pressure-sensing joint (3); a fixing ring assembly is sleeved on the oil pipe (1); the fixing ring assembly comprises a first clamping hoop (5), a second clamping hoop (6) and an adjusting half ring (7); the first clamping hoop (5) and the second clamping hoop (6) are hinged and fixed by a fixing screw (8); a semicircular groove is provided on the first clamping hoop (5); the adjusting half ring (7) is installed in the semicircular groove by a pin limiter; the pressure gauge (4) is clamped with the adjusting half ring (7).

2. A downhole dual pressure gauge installation structure according to claim 1, characterized in that: The pressure gauge (4) is provided with an annular pressure sensing end (42).

3. The downhole dual-pressure gauge installation structure according to claim 1, characterized in that: The first clamp (5) has a threaded through hole on one side of the semicircular groove, and the limit screw (9) passes through the threaded through hole and moves radially along the semicircular groove.

4. A downhole dual pressure gauge installation structure according to claim 3, characterized in that: The limiting screw (9) and the fixing screw (8) are covered with sealing rings.

5. The downhole dual-pressure gauge installation structure according to claim 1, characterized in that: The pressure sensing end of the pressure gauge (4) is covered with a sealing ring.

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