Device and method for measuring embedding depth of proppant

A technology of embedding depth and measuring devices, which is applied in the directions of surveying, earthwork drilling, and mining fluids, etc. It can solve problems such as inability to obtain embedding depth, poor adaptability of experimental results, and inability to repeat experiments on rocks in different formations, so that the measurement method is practical , Simple structure, reliable principle

Inactive Publication Date: 2009-09-02
SOUTHWEST PETROLEUM UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] 1. Using steel balls to simulate proppant and cemented beach sand to simulate formation rock cannot reflect the real situation of the interaction between fracturing proppant and formation rock
[0006] 2. Repeated experiments cannot be carried out for rocks in d

Method used

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  • Device and method for measuring embedding depth of proppant
  • Device and method for measuring embedding depth of proppant

Examples

Experimental program
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Example Embodiment

[0025] See figure 1 , figure 2 . The measuring device of proppant embedding depth is mainly composed of advection pump 2, plate holder 3, hydraulic press 4, data acquisition board 9, and computer 11. The plate holder 3 is located on the platform of hydraulic press 4, and the plate holder The device is a hollow container with a piston 15 on the upper and lower cavity 18, a core (or steel plate) 13 between the pistons, a proppant 14 between the cores, and a gasket 12 around the core, inside the cavity There is also a sealing gasket 16 between the piston and the piston; the inner side of the plate holder cavity has a deep hole for inserting the electric heating rod 8 and the temperature sensor 6, and the two ends are respectively equipped with small holes 17 for entering and exiting the experimental fluid. The liquid orifice is connected with the advection pump 2 and the liquid storage tank 1, the liquid outlet orifice is connected with the waste liquid tank 10; the hydraulic machin...

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Abstract

The invention relates to a device and a method for measuring the embedding depth of a proppant used for compression fracture in the process of oil-gas field development, wherein the device comprises a smooth flow pump, a liquid storage tank, a flat plate clamper, a hydraulic machine, a data acquisition board, a computer, and the like. The method comprises the following steps: spreading the proppant between two steel plates which are loaded in a cavity of the flat plate clamper, and placing the flat plate clamper on a platform of the hydraulic machine; starting the computer and inputting experimental parameters; pumping the liquid in the liquid storage tank into a state for simulating stratum fluid in the clamper by the smooth flow pump, simulating the temperature and the pressure of a stratum by an electric heating stick and the hydraulic machine, displaying crack changes by a displacement sensor, and transmitting all data to the computer by the data acquisition board; replacing the steel plates by rock cores, and repeating the steps; and processing and calculating the data by the computer to obtain the embedding depth of the proppant under different environmental conditions. The device has a reliable principle and a simple structure, and the method is practical, thereby providing a special device and an evaluation method for evaluating the depth of the proppant embedded into rocks in the fracturing process in an oil-gas field.

Description

technical field [0001] The invention relates to the petroleum industry department, and relates to a device and a method for measuring the embedding depth of a proppant injected into a rock formation during the development of an oil and gas field. Background technique [0002] Reservoir stimulation by proppant fracturing is the key engineering technology for oil and gas reservoir construction, production and efficient development. After the fracturing operation is completed, under the action of formation closure stress, the proppant embeds into the formation rock to reduce the width of propped fractures, which seriously affects the fracturing effect. This phenomenon is especially obvious in soft formations. Analyzing and evaluating the depth of proppant embedding in rock (corresponding to the severity of proppant embedding in rock) is of great significance for adopting reasonable technological measures to prevent proppant embedding and improve fracturing effect. [0003] At ...

Claims

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Application Information

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IPC IPC(8): E21B47/04E21B43/267
Inventor 郭建春赵金洲卢聪王文耀李勇明
Owner SOUTHWEST PETROLEUM UNIV
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