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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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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

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 different formations, and the adaptability of the experimental results is poor
[0007] 3. It is only used to describe the ubiquitous proppant embedding phenomenon, and the specific embedding depth cannot be obtained, which lacks practical guidance for fracturing design

Method used

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  • Device and method for measuring embedding depth of proppant

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Embodiment Construction

[0025] see figure 1 , figure 2 . The measuring device for the depth of proppant embedding is mainly composed of an advection pump 2, a plate holder 3, a hydraulic press 4, a data acquisition board 9, and a computer 11. The plate holder 3 is located on the platform of the hydraulic press 4, and the plate clamps The container is a hollow container with a piston 15 at the upper and lower sides of the cavity 18. There are rock cores (or steel plates) 13 between the pistons, and proppant 14 is arranged between the rock cores. There are sealing gaskets 12 around the rock cores. There is also a sealing gasket 16 between the piston and the cavity; there are deep holes inside the cavity of the flat plate holder for inserting the electric heating rod 8 and the temperature sensor 6, and there are small holes 17 for entering and exiting the experimental fluid at both ends respectively. The liquid small hole is connected with the advection pump 2 and the liquid storage tank 1, and the l...

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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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