Large-volume cement paste mixing device and mixing method thereof

A mixing and mud technology, which is applied in the direction of cement mixing device, liquid ingredient supply device, mixing operation control device, etc., can solve the problems of low mixing uniformity and low mixing efficiency, and meet the requirements of large displacement cementing Construction conditions, compact structure, small size effect

Active Publication Date: 2021-01-05
中油国家油气钻井装备工程技术研究中心有限公司 +2
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to provide a large-volume cement slurry mixing device to solve the problems of low mixing efficiency and low mixing uniformity in the prior art cement slurry mixing equipment

Method used

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  • Large-volume cement paste mixing device and mixing method thereof
  • Large-volume cement paste mixing device and mixing method thereof
  • Large-volume cement paste mixing device and mixing method thereof

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Embodiment Construction

[0042] A large-volume cement slurry mixing device and a mixing method thereof according to the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] Such as figure 1 , figure 2 and image 3 As shown, a large-volume cement slurry mixing device includes a skid body 1, on which a power bracket 2, a water tank 3, an operating platform 4, a mixing tank 5, a starter cabinet bracket 6, and a power bracket 2 are sequentially arranged. Including a hydraulic oil tank 7 and an air control cabinet 8, two motors 9 are installed on the lower part of the power bracket 2, each motor 9 is connected to a transfer case 10 through a coupling, and a hydraulic pump group 11 is installed on the transfer case 10;

[0044] An electric control console 12, an oil injection tank 13 and a defoaming tank 14 are installed on the operation platform 4, and a clear water manifold 15 is installed on the lower part of the operation...

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Abstract

The invention discloses a large-volume cement paste mixing device which comprises a pry body. A power support, a water tank, an operation platform, a mixing tank and a starting cabinet support are sequentially arranged on the pry body. The power support comprises a hydraulic oil tank and a pneumatic control cabinet, two motors are further installed on the lower portion of the power support, and each motor is connected with a transfer case through a coupler. A hydraulic pump set is mounted on the transfer case. The invention also discloses a mixing method of the device. The method comprises thefollowing steps: step 1, calculating the required theoretical clear water and cement amount, adjusting the opening degrees of a water valve and a cement valve to theoretical values, and controlling and adjusting the opening degrees of the cement valve and the water valve to enable the density measured by a densimeter to continuously approach the required density. and 2, triggering a signal to increase the opening degrees of the water valve and the cement valve when the liquid level value is lower than the low liquid level value, deriving the change speed of the liquid level value to obtain change acceleration, and controlling the decreasing and increasing speed of the water valve according to the change acceleration. High-efficiency mixing can be realized, mixing is uniform, the mixing volume is large, and the on-site working condition is met.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field cementing equipment, and in particular relates to a large-volume cement slurry mixing device, and also relates to a mixing method of the device. Background technique [0002] Well cementing is an indispensable and important link in the process of drilling and completion operations, which includes casing running and cementing. The main purpose of cementing is to protect and support the casing in oil and gas wells, and to isolate formations such as oil, gas and water. The construction operation of running casing into the well and injecting cement into the annular space between the wellbore and the casing is called well cementing. Among them, cement slurry needs to be mixed on site, and uniform cement slurry containing different materials and various densities can be prepared according to requirements. At the same time, with the improvement of oilfield operation efficiency, ultra-deep well...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28C9/04B28C7/04B28C7/12B28C5/08
CPCB28C9/04B28C7/0413B28C7/126B28C5/0806
Inventor 范松李小兵李鹏赵明建张怀文白兰昌刘姣利
Owner 中油国家油气钻井装备工程技术研究中心有限公司
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