Remote self-control diluting pump pry

Abstract

The utility model relates to a remote self-control diluting pump pry. The remote self-control diluting pump pry comprises a base; the liquid storage tank is fixed on the base and is used for storing thin oil; the liquid feeding pump is connected with the liquid storage tank through a liquid feeding pipe, and the liquid feeding pump pumps out the thin oil in the liquid storage tank; the plunger pump is connected with the liquid feeding pump through a pressurizing pipe, receives the oil for blending the thin oil sent by the liquid feeding pump and pressurizes the oil for blending the thin oil, and the plunger pump conveys the oil for blending the thin oil to the Christmas tree through an output pipe; the pressure sensor is connected with the plunger pump to measure the pressure of the plunger pump; the flow meter is arranged on the output pipe to detect the output flow of the thin oil blending oil; the control device is respectively connected with the liquid feeding pump and the flow meter, and the control device can receive data transmitted by the flow meter and adjust the rotating speed of the liquid feeding pump according to the data. The remote self-control dilution pump skid solves the problem that partial existing oil wells need intermittent dilution but have no corresponding dilution facilities, and the remote self-control dilution pump skid can move, can be unattended and can stably carry out dilution.

Description

Technical Field

[0001] The utility model relates to the field of oil and gas production equipment, and is used for adding thin oil into an oil well to reduce viscosity, in particular to a remote automatic control thinning pump skid. Background Art

[0002] Some oil fields have high reserves of extra-heavy oil, with underground crude oil viscosity reaching 260MPa·s-736MPa·s and surface crude oil viscosity of 1.0×10 5 MPa·s-1.0×10 7 MPa·s. Ultra-heavy oil is fluid in the formation. During the lifting process, as the temperature drops, the viscosity increases, and at around 3,000 meters, it loses its ability to flow. This necessitates wellbore viscosity reduction, primarily through diluting oil. In actual field production, the diluting oil process primarily relies on centralized oil supply from a station and the laying of diluting pipelines to individual wells. However, as development methods continue to deepen, some non-diluting wells require intermittent diluting production due to changes in oil product properties. Limited by the non-diluting process, diluting oil tanks, pump trucks, and manual oversight are required to implement diluting at the wellhead, resulting in high costs. Furthermore, some oil wells experience casing pressure fluctuations during production. High casing pressure or excessively long diluting pipelines make centralized diluting unstable, leading to oil well anomalies. Summary of the Invention

[0003] The utility model overcomes the problem that some existing oil wells require intermittent dilution but have no corresponding dilution facilities, and provides a remote self-controlled dilution pump skid which is movable, unmanned and can stably perform dilution.

[0004] The remote automatic control dilution pump skid of the utility model comprises:

[0005] base;

[0006] A liquid storage tank, fixed to the base, for storing the dilution oil;

[0007] A liquid feeding pump is connected to the liquid storage tank via a liquid feeding pipe, and the liquid feeding pump extracts the diluted oil in the liquid storage tank;

[0008] a plunger pump connected to the liquid feeding pump via a pressure pipe, receiving the dilution oil delivered by the liquid feeding pump and pressurizing the dilution oil; and the plunger pump delivers the dilution oil to the Christmas tree via an output pipe;

[0009] A pressure sensor connected to the plunger pump to measure the pressure of the plunger pump;

[0010] A flow meter is provided on the output pipe to detect the output flow of the diluted oil;

[0011] The control device is connected to the liquid feeding pump and the flow meter respectively. The control device can receive data from the flow meter and adjust the rotation speed of the liquid feeding pump according to the data.

[0012] Preferably, the plunger pump is a three-plunger pump.

[0013] Preferably, the remote automatic dilution pump skid further comprises a lubrication pump, which is connected to the lubrication channel of the plunger pump to supply lubricating oil to the plunger pump.

[0014] Preferably, a pressure sensor is further included, wherein the pressure sensor is connected to the plunger pump to measure the pressure of the plunger pump, and the pressure sensor is connected to the control device.

[0015] Preferably, the remote automatic dilution pump skid further comprises an oil inlet pipe connected to the liquid storage tank, the oil inlet pipe is provided with a liquid inlet valve, the liquid storage tank is further provided with a liquid level gauge for detecting the liquid level of the dilution oil stored therein, the control device is respectively connected to the liquid inlet valve and the liquid level gauge, the control device can receive data from the liquid level gauge and control the opening and closing of the liquid inlet valve according to the data.

[0016] Preferably, the liquid level meter is a radar level meter.

[0017] Compared with existing technologies, this utility model has the following advantages: the remote, automatic dilution pump skid can be towed to the oil well site by vehicle when in use and returned to storage when not in use. The plunger pump increases the pressure of the dilution oil, and the feed pump, flow meter, and control device control the dilution oil to be injected into the oil well at a constant flow rate, ensuring stable dilution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a remote automatic dilution pump skid according to an embodiment of the present invention.

[0019] Reference numerals

[0020] 1 base, 11 hanging earrings;

[0021] 2 liquid storage tank, 21 breathing valve, 22 liquid level gauge;

[0022] 3 feeding liquid pump;

[0023] 4 plunger pumps;

[0024] 5. Flow meter;

[0025] 6 pressure sensors;

[0026] 7. Lubrication pump;

[0027] 8. Control device;

[0028] L1 liquid feeding pipe, L2 pressure pipe, L3 output pipe, L4 oil inlet pipe;

[0029] V1 liquid inlet valve. DETAILED DESCRIPTION

[0030] The utility model provides a remote automatic control dilution pump skid for adding dilution oil to the annulus between the oil pipe and the casing of a high viscosity oil well. Figure 1 As shown, the remote automatic control dilution pump skid of this embodiment includes: a base 1, a liquid storage tank 2, a liquid feeding pump 3, a plunger pump 4, a flow meter 5 and a control device 8, wherein the base 1 can be a metal plate or a metal frame, and the edge of the base 1 is also provided with a lifting earring 11, which is convenient for connection with the lifting equipment when it needs to be lifted to a vehicle. A liquid storage tank 2 is fixed on the base 1, and the liquid storage tank 2 is used to store the dilution oil. The top of the liquid storage tank 2 is provided with a breathing valve 21. When dilution is required, the pump skid is dragged to the oil well site by a vehicle. The remote automatic control dilution pump skid also includes a liquid feeding pump 3. The liquid feeding pump 3 used in this embodiment has a pressure resistance of 0.6MPa. The liquid feeding pump 3 is connected to the liquid storage tank 2 through a liquid feeding pipe L1 and extracts the dilution oil in the liquid storage tank 2 and sends it to the plunger pump 4. The liquid feeding pipe L1 is provided with a liquid feeding valve. A plunger pump 4 is connected to the liquid feed pump 3 via a pressure pipe L2. It pressurizes the diluent oil delivered by the liquid feed pump 3. The plunger pump 4 can withstand a pressure of 25 MPa. In this embodiment, three plunger pumps 4 are used. The plunger pump 4 delivers the diluent oil to the casing wing of a Christmas tree (not shown) via an output pipe L3. Output pipe L3 may be equipped with an output valve, connecting the casing wing of the Christmas tree to the casing of the oil well, thereby delivering the diluent oil to the oil well. A flow meter 5 is installed in the output pipe L3 to detect the output flow rate of the diluent oil. A control device 8 is connected to the liquid feed pump 3 and the flow meter 5, respectively. The control device 8 is set to a flow range. The control device 8 receives data from the flow meter 5 and adjusts the speed of the liquid feed pump 3 based on this data. When the data from the flow meter 5 exceeds the set flow range, the control device 8 issues a frequency converter command to reduce the frequency, thereby reducing the speed of the liquid feed pump 3. Otherwise, the speed of the liquid feed pump 3 is increased. The liquid feeding valve and the output valve are also connected to the control device 8 and are opened or closed under set conditions, such as a set time.

[0031] The remote, automated dilution pump skid of this utility model can be towed to the oil well site by vehicle when in use and returned to storage when not in use. The plunger pump 4 increases the pressure of the dilution oil, and the feed pump 3, flow meter 5, and control device 8 control the dilution oil to be injected into the oil well at a constant flow rate, ensuring stable dilution.

[0032] like Figure 1As shown, in this embodiment, the remote automatic dilution pump skid further includes a lubrication pump 7 , which is connected to the lubrication channel of the plunger pump 4 to supply lubricating oil to the plunger pump 4 to ensure the normal operation of the plunger pump 4 .

[0033] like Figure 1 As shown, the pump skid of this embodiment further includes a pressure sensor 6, which is connected to the plunger pump 4 to measure the pressure of the plunger pump 4. The pressure sensor 6 is connected to the control device 8. The control device 8 can set the working pressure of the plunger pump 4 and adjust the operating parameters of the plunger pump 4, such as the reciprocating frequency of the plunger, according to the data from the pressure sensor 6, so as to maintain a stable working pressure.

[0034] like Figure 1 As shown, the remote automatic control dilution pump skid also includes an oil inlet pipe L4 connected to the liquid storage tank 2, and the oil inlet pipe L4 is connected to the source of the dilution oil. The oil inlet pipe L4 is provided with an inlet valve V1, which is a solenoid valve or an electric valve. The liquid storage tank 2 is also provided with a level meter 22 for detecting the liquid level of the dilution oil stored therein. In this embodiment, the level meter 22 is a radar level meter 22. The control device 8 is connected to the liquid inlet valve V1 and the liquid level gauge 22 respectively. The control device 8 can receive data from the liquid level gauge 22 and control the opening and closing of the liquid inlet valve V1 according to the data. For example, when the liquid level of the liquid storage tank 2 is 0.4m, the liquid level gauge 22 transmits the liquid level switch "open" signal to the control device 8. The control device 8 issues an "open" command to the liquid inlet valve V1 of the oil inlet pipe L4. The liquid storage tank 2 begins to fill with liquid. When the liquid level reaches 1.3m, the liquid level gauge 22 transmits the "close" signal to the control device 8. The control device 8 issues a "close" command to the liquid inlet valve V1, and the liquid inlet valve V1 is closed. Through the above settings, automatic liquid replenishment of the liquid storage tank 2 can be achieved without manual monitoring of the liquid level and liquid replenishment.

[0035] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the claims. Various modifications or equivalent substitutions made by those skilled in the art within the spirit and scope of protection of the present invention also fall within the scope of protection of the present invention.

Claims

1. A remote automatic control dilution pump skid, characterized in that: include: base; a liquid storage tank fixed to the base, for storing the dilute oil, the liquid storage tank having an oil inlet pipe, the oil inlet pipe being provided with an inlet valve, and the liquid storage tank also being provided with a level gauge for detecting the liquid level of the dilute oil stored therein; A liquid feeding pump is connected to the liquid storage tank via a liquid feeding pipe, and the liquid feeding pump extracts the diluted oil in the liquid storage tank; a plunger pump connected to the liquid feeding pump via a pressure pipe, receiving the dilution oil delivered by the liquid feeding pump and pressurizing the dilution oil; and the plunger pump delivers the dilution oil to the Christmas tree via an output pipe; A pressure sensor connected to the plunger pump to measure the pressure of the plunger pump; A flow meter is provided on the output pipe to detect the output flow of the diluted oil; A control device is connected to the liquid feeding pump and the flow meter respectively, and the control device can receive data from the flow meter and adjust the speed of the liquid feeding pump according to the data. The control device is connected to the liquid inlet valve and the liquid level meter respectively, and the control device can receive data from the liquid level meter and control the opening and closing of the liquid inlet valve according to the data.

2. The remote automatic dilution pump skid according to claim 1 is characterized in that: The plunger pump is a three-plunger pump.

3. The remote automatic dilution pump skid according to claim 1 is characterized in that: The remote automatic control dilution pump skid further comprises a lubrication pump, which is connected to a lubrication channel of the plunger pump to supply lubricating oil to the plunger pump.

4. The remote automatic dilution pump skid according to claim 1 is characterized in that: It also includes a pressure sensor, which is connected to the plunger pump to measure the pressure of the plunger pump, and the pressure sensor is connected to the control device.

5. The remote automatic dilution pump skid according to claim 1 is characterized in that: The liquid level gauge is a radar level gauge.

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