A fracturing ship sand delivery mixing system and sand delivery method
A hybrid system and fracturing technology, applied in the field of sand conveying system, can solve the problems of inability to carry out large-scale fracturing construction, affecting the driving stability of ships, and high center of gravity of ships. The effect of installation height
Active Publication Date: 2018-08-10
中石化四机石油机械有限公司 +1
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Problems solved by technology
This method always requires people to manually operate the opening size of the gate valve during operation, and because the screw sand conveyor is conveyed upwards, the sand conveying efficiency is low, and at the same time, the total amount of sand added to the operation is limited due to the small volume of the sand storage tank. The high installation position leads to a high center of gravity of the ship and affects the stability of the ship. These reasons make it impossible to carry out large-scale fracturing construction
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[0018] Attached below figure 1 Specific embodiments of the present invention will be further described.
[0019] Such as figure 1 As shown, a fracturing ship sand mixing system includes a sand storage tank 1, a sand delivery device 2, a sand guide pipe 3, a sand bucket 4, a mixing tank 5, a liquid supply device 7, a liquid discharge device 6, and a PLC controller 8. The sand storage tank 1 is installed on the upper deck of the fracturing vessel, and its position is higher than the sand inlet at the top of the mixing tank 5. The sand outlet at the bottom of the sand storage tank 1 is connected to the sand delivery device 2. The upper part of the mixing tank 5 has an inlet The sand mouth is connected with the sand bucket 4, and the sand bucket 4 is connected with the sand outlet of the sand conveying device 2 through the sand guide pipe 3. The method of use is as follows: when performing fracturing operations, first fill the sand storage tank 1 with sand , the liquid supply de...
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The invention discloses a sand conveying and mixing system for a fracturing ship. The sand conveying and mixing system is characterized in that the bottom of a sand storage tank is connected with a sand conveying device; the sand conveying amount is regulated through controlling the rotation speed of a sand conveying spiral conveyer of the sand conveying device; a liquid supply flow meter of a liquid supply device feeds an acquired liquid flow signal back to a PCL; a densimeter of a liquid drainage device feeds a density signal back to the PCL; a liquid drainage flow meter feeds a flow signal back to the PCL; the PCL calculates the working rotation speed of the sand conveying device and automatically adjusts the working rotation speeds of a liquid supply centrifugal pump and the sand conveying device, so that the drainage flow and a set flow value are the same, and the drainage flow is automatically controlled; and a liquid level meter of a mixing tank sends a liquid level height signal to the PLC, and the liquid level height of the mixing tank is automatically controlled. According to the sand conveying and mixing system and a sand conveying method for the fracturing ship provided by the invention, remote and automatic control of the sand conveying speed, drainage amount of a mixed liquid and density of the mixed liquid is achieved, and the mounting height of the mixing system is decreased.
Description
technical field [0001] The invention relates to a sand conveying system, in particular to a sand conveying system for a fracturing ship. [0002] The present invention also relates to a sand conveying method using the above sand conveying system. Background technique [0003] With the continuous progress of petroleum exploration and development technology, reservoir stimulation technology such as acidizing and fracturing has become the main technology for developing low-permeability oil and gas fields and increasing single well production. This stimulation technology has been widely used in onshore oil and gas fields, forming a complete supporting and mature process system. Transforming land acidification, fracturing and other production stimulation technologies into feasible technologies suitable for offshore oil and gas operations will become one of the development strategies for future offshore oil exploration and development. Most offshore oil and gas fracturing operat...
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IPC IPC(8): E21B43/26
CPCB28C5/16B28C7/024B28C7/0418B28C7/10B28C7/126B28C7/14B28C7/167E21B43/01E21B43/26
Inventor 官强雷刚蔡正志黄朝斌尹进
Owner 中石化四机石油机械有限公司