CN216665573U

CN216665573U - Blowout preventer control device with energy accumulator for workover rig

Info

Publication number: CN216665573U
Application number: CN202220225594.6U
Authority: CN
Inventors: 刘海龙; 王帅; 于军; 徐会娟; 苗林慧
Original assignee: Tonghua Petrochemical Machinery Manufacturing Co ltd
Current assignee: Tonghua Petrochemical Machinery Manufacturing Co ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-06-03
Anticipated expiration: 2032-01-27

Abstract

The utility model relates to special equipment for an oil field, in particular to a blowout preventer control device with an energy accumulator for a workover rig. The electromagnetic unloading oil tank comprises an oil tank, wherein the oil tank is provided with an oil suction port and an oil return port, and the oil suction port of the oil tank is sequentially connected with a plunger pump, an electromagnetic unloading overflow valve and a one-way valve; one path of the one-way valve is divided to an accumulator group for storing pressure oil, the other path of the one-way valve is connected with a manual pressure reducing valve, the manual pressure reducing valve is connected with two groups of electromagnetic directional valves, and the two groups of electromagnetic directional valves are respectively connected with a semi-closed gate plate interface and a full-closed gate plate interface of the double-gate plate blowout preventer; the accumulator group is provided with a safety valve and a pressure relay for controlling an electromagnetic unloading overflow valve. The device adopts an energy accumulator group with small capacity, and is mainly used for opening and closing a single ram or opening or closing a full seal or a half seal of a double ram blowout preventer. The whole device travels along with the vehicle, so that an independent control device is not required to be installed on a wellhead accessory, and the device is convenient to use and operate.

Description

Blowout preventer control device with energy accumulator for workover rig

Technical Field

The utility model relates to special equipment for an oil field, in particular to a blowout preventer control device with an energy accumulator for a workover rig.

Background

In the prior art, in the oil field ground wellhead control equipment, a wellhead blowout preventer is commonly used for closing a wellhead in the operation processes of well repair, well completion and the like to prevent blowout accidents, and is a commonly used safety sealing device for preventing blowout in the oil field. With the development of downhole operation technology, well control equipment is also continuously improved and perfected. In well repairing operation, a single manual blowout preventer is developed into a hydraulic blowout preventer, and pressure oil is used for driving the blowout preventer, so that the purposes of well sealing and well opening are achieved. Convenient operation, safety and reliability, and provides safety guarantee for underground operation.

When an oil field is in workover operation, a ground blowout preventer is used as a well control device, different types such as a single ram, a double ram, an annular blowout preventer and the like are combined for use, a large-capacity hydraulic accumulator group is needed to meet the control requirement, and an independent control system device is arranged near the oil well and is used for remote operation and control. When the well is repaired, the wellhead only needs to use a single ram or double ram blowout preventer, and a set of independent blowout preventer remote control system device is inconvenient to add. The development of a set of blowout preventer is mainly used for opening and closing a single ram or opening and closing a full seal and a half seal of a double-ram blowout preventer, and the requirement for controlling the wellhead blowout preventer is met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a blowout preventer control device with an accumulator for a workover rig, which is vehicle-mounted, convenient to use and operate. The single ram or double ram blowout preventer is only used for controlling a wellhead.

The technical solution of the utility model is as follows: the blowout preventer control device with the energy accumulator for the workover rig is characterized by comprising an oil tank, wherein the oil tank is provided with an oil suction port and an oil return port, and the oil suction port of the oil tank is sequentially connected with a plunger pump, an electromagnetic unloading overflow valve and a one-way valve; one path of the one-way valve is divided to an accumulator group for storing pressure oil, the other path of the one-way valve is connected with a manual pressure reducing valve, the manual pressure reducing valve is connected with two groups of electromagnetic directional valves, and the two groups of electromagnetic directional valves are respectively connected with a semi-closed gate plate interface and a full-closed gate plate interface of the double-gate plate blowout preventer; the oil supply pressure gauge, the energy accumulator pressure gauge and the working pressure gauge are respectively connected to the plunger pump, the energy accumulator group and the electromagnetic directional valve; the accumulator group is provided with a safety valve and a pressure relay for controlling an electromagnetic unloading overflow valve.

The utility model has the advantages that: the device adopts a blowout preventer control device of a small-capacity accumulator group (120L), is mainly used for opening and closing a single ram or opening or closing a full seal or a half seal of a double-ram blowout preventer, has less oil consumption for hydraulic control and smaller volume, meets the control of the wellhead blowout preventer, is mounted on a workover rig, travels along with a truck, avoids mounting an independent control device at a wellhead accessory, and is convenient to use and operate.

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a hydraulic schematic of the present invention.

FIG. 2 is a schematic diagram of the present invention.

Fig. 3 is a diagram of the installation of the present invention in a workover rig.

Detailed Description

Referring to fig. 1-3, the part names are as follows: 1. an oil absorption filter; 2. a plunger pump; 3. an electromagnetic unloading overflow valve; 4. an oil supply pressure gauge; 5. a one-way valve; 6. a manual pressure reducing valve; 7. a safety valve; 8. an accumulator pressure gauge; 9. a pressure relay; 10. an accumulator; 11. an electromagnetic directional valve; 12. a working pressure gauge; 13. an oil return filter; 14. an oil tank; 15. a workover rig; 16. a blowout preventer semi-seal ram interface; 17. a blowout preventer full shut ram interface; 18. a frame.

Referring to fig. 1 and 2, the blowout preventer control device with the energy accumulator for the workover rig comprises an oil tank 14, wherein the oil tank 14 is provided with an oil suction port and an oil return port, and the oil suction port of the oil tank is sequentially connected with a plunger pump 2, an electromagnetic unloading overflow valve 3, a one-way valve 5 and a pipeline; one path of the check valve 5 is divided into an energy accumulator group 10 for storing pressure oil, the other path of the check valve 5 is connected with a manual pressure reducing valve 6, the manual pressure reducing valve 6 is connected with two groups of electromagnetic directional valves 11, and the two groups of electromagnetic directional valves 11 are respectively connected with a semi-closed gate plate interface and a full-closed gate plate interface of the double-gate plate blowout preventer; the oil supply pressure gauge 4, the energy accumulator pressure gauge 8 and the working pressure gauge 12 are respectively connected with the plunger pump 2, the energy accumulator group 10 and the electromagnetic directional valve 11; the accumulator group 10 is provided with a safety valve 7 and a pressure relay 9 for controlling the electromagnetic unloading overflow valve 3. The accumulator group 10, the electromagnetic directional valve 11 and the like are arranged in the frame 18.

Referring to fig. 3, the apparatus is centrally installed on a workover rig 15 according to the control principle of a single ram or double ram blowout preventer.

Referring to fig. 1, 2 and 3, the control use flow is as follows: the workover rig power box drives the plunger pump 2 to provide pressure oil for a control system, the electromagnetic overflow valve 3 regulates the pressure of hydraulic oil to 21MPa of maximum pressure, one path of the pressure oil passes through the one-way valve 5 and is divided into an energy accumulator set (120L) to store the 21MPa pressure oil, the other path of the pressure oil is regulated to 10.5MPa of service pressure through the pressure reducing valve 6, and the two groups of electromagnetic reversing valves 11 are used for respectively controlling the opening and closing of the semi-closed gate and the full-closed gate of the double-gate blowout preventer. When the single ram blowout preventer is controlled, only one group of electromagnetic valves need to be connected for use. The pressure oil filled into the accumulator group is connected with a pressure relay 9, the pressure relay 9 regulates the pressure with the upper limit of 21MPa and the lower limit of 17.5MPa, the electric signal is connected with an electromagnetic overflow valve 3, when the pressure of the accumulator group is more than 21MPa, the electromagnetic overflow valve 3 loses power and unloads, and the hydraulic oil directly flows back to an oil tank 14; when the pressure of the accumulator set is less than 17.5MPa, the electromagnetic overflow valve 3 is electrified, and the pressure oil is continuously charged into the pressure oil of the accumulator set until the pressure oil reaches 21 MPa. The oil supply pressure gauge 4, the energy accumulator pressure gauge 8 and the working pressure gauge 12 respectively display the oil pressure of the plunger pump, the oil pressure of the energy accumulator group and the oil pressure used by the system. The manual pressure reducing valve 6 meets the operation of opening and closing and unloading the accumulator group. The control system equipment is arranged on the workover rig 15, and the hydraulic oil tank 14 is centralized in the hydraulic system oil tank of the workover rig and runs along with the workover rig, so that the use and the operation are convenient.

Claims

1. The blowout preventer control device with the energy accumulator for the workover rig is characterized by comprising an oil tank (14), wherein the oil tank (14) is provided with an oil suction port and an oil return port, and the oil suction port of the oil tank is sequentially connected with a plunger pump (2), an electromagnetic unloading overflow valve (3) and a one-way valve (5); one path of the one-way valve (5) is divided into an energy accumulator group (10) for storing pressure oil, the other path of the one-way valve (5) is connected with a manual reducing valve (6), the manual reducing valve (6) is connected with two groups of electromagnetic directional valves (11), and the two groups of electromagnetic directional valves (11) are respectively connected with a semi-closed gate plate interface and a full-closed gate plate interface of the double-gate plate blowout preventer; the oil supply pressure gauge (4), the energy accumulator pressure gauge (8) and the working pressure gauge (12) are respectively connected to the plunger pump (2), the energy accumulator set (10) and the electromagnetic directional valve (11); the accumulator group (10) is provided with a safety valve (7) and a pressure relay (9) for controlling the electromagnetic unloading overflow valve (3).