Well drilling and workover energy storage system with potential energy recovery function

Abstract

The invention discloses a well drilling and workover energy storage system with potential energy recovery. The well drilling and workover energy storage system comprises an electrochemical energy storage unit, a first bidirectional energy storage throttler, a second bidirectional energy storage throttler, a third bidirectional energy storage throttler, a rectification feedback device and an energy management system, the electrochemical energy storage unit is connected with the third bidirectional energy storage throttler, the third bidirectional energy storage throttler is connected with the second bidirectional energy storage throttler and the generator, the second bidirectional energy storage throttler is further connected with the first bidirectional energy storage throttler and the rectification feedback device, and the rectification feedback device is further connected with the generator. The first bidirectional energy storage throttler is also connected with load equipment; and the energy management system is in communication connection with the electrochemical energy storage unit, the first bidirectional energy storage throttler, the second bidirectional energy storage throttler, the third bidirectional energy storage throttler and the rectification feedback device.

Description

Technical Field

[0001] The invention belongs to the technical field of petroleum equipment, and in particular relates to a drilling and repairing energy storage system with potential energy recovery. Background Art

[0002] During drilling and workover operations, a drilling and workover rig needs to add an additional fuel (gas) generator set to operate in the grid to ensure the safe operation of the drilling and workover rig in response to sudden load changes during drilling and workover. The drilling and workover rig has a large impact on sudden load changes in power and is highly dependent on dedicated units. The units are often in an inefficient operating state, with problems such as slow transient response, inefficient unit operation, high fuel consumption, high emissions, waste of potential energy, and no energy management. Summary of the invention

[0003] The purpose of the present invention is to provide a drilling and workover energy storage system with potential energy recovery to solve the problems of slow transient response, inefficient unit operation, high fuel consumption, high emissions, waste of potential energy and lack of energy management when a fuel (gas) generator power station faces a sudden load impact of a drilling and workover rig power.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a drilling and repairing energy storage system with potential energy recovery, comprising an electrochemical energy storage unit, a first bidirectional energy storage throttle, a second bidirectional energy storage throttle, a third bidirectional energy storage throttle, a rectifier feedback device and an energy management system; the electrochemical energy storage unit is connected to the third bidirectional energy storage throttle, the third bidirectional energy storage throttle is respectively connected to the second bidirectional energy storage throttle and the generator, the second bidirectional energy storage throttle is also respectively connected to the first bidirectional energy storage throttle and the rectifier feedback device, the rectifier feedback device is also connected to the generator, and the first bidirectional energy storage throttle is also connected to the load equipment; the energy management system is communicatively connected to the electrochemical energy storage unit, the first bidirectional energy storage throttle, the second bidirectional energy storage throttle, the third bidirectional energy storage throttle and the rectifier feedback device.

[0005] As a preferred technical solution of the present invention, there are multiple electrochemical energy storage units and third bidirectional energy storage throttles, and each electrochemical energy storage unit is connected to a corresponding third bidirectional energy storage throttle.

[0006] As a preferred technical solution of the present invention, the plurality of third bidirectional energy storage throttles are respectively connected to the motor and the second bidirectional energy storage throttle.

[0007] As a preferred technical solution of the present invention, there are multiple generators, and the multiple generators are connected by a busbar.

[0008] As a preferred technical solution of the present invention, the first bidirectional energy storage throttle, the second bidirectional energy storage throttle, and the third bidirectional energy storage throttle are all composed of a converter and a control unit.

[0009] The beneficial effects of the present invention are as follows: (1) The drilling and repairing energy storage system with potential energy recovery invented by the present invention is highly integrated with the generator set and the electronic control system to form an intelligent microgrid system. The system realizes the integration and management of various power fuel (gas) generator sets at home and abroad, and realizes the energy dispatching and control of electrochemical energy storage in the generator set microgrid with rapid switching and precise control. (2) The drilling and repairing energy storage system with potential energy recovery invented by the present invention realizes multi-level protection and management of battery cells, battery boxes and battery clusters. (3) The drilling and repairing energy storage system with potential energy recovery invented by the present invention realizes the recovery and utilization of drilling potential energy, effectively controls the system energy consumption and temperature management, and realizes the comprehensive energy management and utilization of drilling and repairing operations. (4) The drilling and repairing energy storage system with potential energy recovery invented by the present invention realizes electrochemical energy storage data collection, network monitoring, energy dispatching and network data analysis through the energy management system, and realizes remote automatic start and stop and data collection of the generator set. Through real-time management of the entire load of the drilling rig, energy is regulated, energy is released when there is a sudden change in load, the running state of the unit is adjusted smoothly, and timely compensation is made according to the energy of the generator set, so as to achieve effective and reasonable energy scheduling and management. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the drilling and repairing energy storage system with potential energy recovery of the present invention.

[0011] In the figure: 1. Generator set; 2. Electrochemical energy storage unit; 3. Rectifier feedback device; 41. First bidirectional energy storage inverter; 42. Second bidirectional energy storage inverter; 43. Third bidirectional energy storage inverter; 5. Load equipment. DETAILED DESCRIPTION

[0012] The present invention is further described in detail below in conjunction with the accompanying drawings, tables and specific embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0013] The present invention is further described below by way of examples, but is not limited to the following embodiments.

[0014] Example 1

[0015] like Figure 1 As shown, the drilling and repairing energy storage system with potential energy recovery of the present invention includes an electrochemical energy storage unit 2, a first bidirectional energy storage throttle 41, a second bidirectional energy storage throttle 42, a third bidirectional energy storage throttle 43, a rectifier feedback device 3 and an energy management system.

[0016] The electrochemical energy storage unit 2 is connected to the third bidirectional energy storage throttle 43, the third bidirectional energy storage throttle 43 is respectively connected to the second bidirectional energy storage throttle 42 and the generator 1, the second bidirectional energy storage throttle 42 is also respectively connected to the first bidirectional energy storage throttle 41 and the rectifier feedback device 3, the rectifier feedback device 3 is also connected to the generator 1, and the first bidirectional energy storage throttle 41 is also connected to the load device 5; the energy management system is communicatively connected to the electrochemical energy storage unit 2, the first bidirectional energy storage throttle 41, the second bidirectional energy storage throttle 42, the third bidirectional energy storage throttle 43 and the rectifier feedback device 3. The first bidirectional energy storage throttle 41, the second bidirectional energy storage throttle 42, and the third bidirectional energy storage throttle 43 are all composed of a converter and a control unit.

[0017] Working principle: The present invention realizes the parallel and off-grid operation of the electrochemical energy storage unit 2 and the generator 1 through the energy management system. When the load of the load device 5 suddenly changes, the electrochemical energy storage unit 2 forms a hybrid power station with the generator 1 through the third bidirectional energy storage throttle 43, and supplies power to the load device 5 through the rectifier feedback device 3 and the first bidirectional energy storage throttle 41; when the generator 1 is in the low power stage, the generator 1 charges the electrochemical energy storage unit 2 through the four-three bidirectional energy storage throttle 43; when the DC bus voltage of the load device 5 suddenly changes, the second bidirectional energy storage throttle 42 is started, and the electrochemical energy storage unit 2 is charged through the third bidirectional energy storage throttle 43 to realize potential energy recovery.

[0018] Example 2

[0019] like Figure 1 As shown, different from Example 1, in the drilling and repairing energy storage system with potential energy recovery of the present invention, the number of electrochemical energy storage units 2 and the third bidirectional energy storage throttle 43 is multiple, and each electrochemical energy storage unit 2 is connected to a corresponding third bidirectional energy storage throttle 43; the multiple third bidirectional energy storage throttles 43 are respectively connected to the generator 1 and the second bidirectional energy storage throttle 42.

[0020] The electrochemical energy storage unit 2 is composed of one or more battery clusters and a battery management system in one-to-one correspondence, and has the ability to detect and manage parameters or characteristics of the smallest battery unit, battery module, and battery cluster.

[0021] The use of multiple groups of electrochemical energy storage units 2 and the third two-way energy storage throttle 43 can maximize energy storage. In addition, each group of electrochemical energy storage units 2 and the third two-way energy storage throttle 43 becomes a separate energy storage unit, which will not affect the use of another group and can be used separately.

[0022] Example 3

[0023] like Figure 1As shown, different from Example 1, in the well drilling and repairing energy storage system with potential energy recovery of the present invention, there are multiple generators 1, and the multiple generators 1 are connected by a busbar.

[0024] In this way, all generators 1 can be powered.

[0025] Therefore, compared with the prior art, the drilling and repairing energy storage system with potential energy recovery of the present invention has the following advantages:

[0026] (1) The drilling and repairing energy storage system with potential energy recovery invented by the present invention is highly integrated with the generator set and the electronic control system to form an intelligent microgrid system. The system realizes the integration and management of various power fuel (gas) generator sets at home and abroad, and realizes the energy dispatching and control of rapid switching and precise control of electrochemical energy storage in the generator set microgrid.

[0027] (2) The drilling and repairing energy storage system with potential energy recovery invented by the present invention realizes multi-level protection and management of battery cells, battery boxes and battery clusters.

[0028] (3) The drilling and well repair energy storage system with potential energy recovery invented by the present invention realizes the recovery and utilization of the potential energy of drilling and drilling, effectively controls the energy consumption and temperature of the system, and realizes the comprehensive energy management and utilization of drilling and well repair operations.

[0029] (4) The drilling and repairing energy storage system with potential energy recovery invented by the present invention realizes electrochemical energy storage data collection, network monitoring, energy scheduling and network data analysis through the energy management system, and realizes remote automatic start and stop and data collection of the generator set. Through real-time management of the entire load of the drilling rig, energy is regulated, energy is released when there is a sudden change in load, the running state of the unit is adjusted smoothly, and timely compensation is made according to the energy of the generator set, so as to realize effective and reasonable energy scheduling and management.

[0030] The above description shows and describes several preferred embodiments of the invention, but as mentioned above, it should be understood that the invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and modifications made by those skilled in the art should be within the scope of protection of the claims attached to the invention without departing from the spirit and scope of the invention.

Claims

1. A drilling and workover energy storage system with potential energy recovery, characterized in that: It includes an electrochemical energy storage unit, a first bidirectional energy storage throttle, a second bidirectional energy storage throttle, a third bidirectional energy storage throttle, a rectifier feedback device and an energy management system; the electrochemical energy storage unit is connected to the third bidirectional energy storage throttle, the third bidirectional energy storage throttle is respectively connected to the second bidirectional energy storage throttle and the generator, the second bidirectional energy storage throttle is also respectively connected to the first bidirectional energy storage throttle and the rectifier feedback device, the rectifier feedback device is also connected to the generator, and the first bidirectional energy storage throttle is also connected to the load equipment; the energy management system is communicatively connected to the electrochemical energy storage unit, the first bidirectional energy storage throttle, the second bidirectional energy storage throttle, the third bidirectional energy storage throttle and the rectifier feedback device.

2. The drilling and repairing energy storage system with potential energy recovery according to claim 1, characterized in that: There are multiple electrochemical energy storage units and third bidirectional energy storage throttles, and each electrochemical energy storage unit is connected to a corresponding third bidirectional energy storage throttle.

3. The drilling and repairing energy storage system with potential energy recovery according to claim 2, characterized in that: The plurality of third bidirectional energy storage throttles are respectively connected to the motor and the second bidirectional energy storage throttle.

4. The drilling and repairing energy storage system with potential energy recovery according to claim 3, characterized in that: There are multiple generators, which are connected via a busbar.

5. The method for using the well drilling and workover energy storage system with potential energy recovery according to claim 4, characterized in that: The first bidirectional energy storage throttle, the second bidirectional energy storage throttle and the third bidirectional energy storage throttle are all composed of a converter and a control unit.

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