Crack plugging layer forming mechanism microscopic visualization experiment device and simulation observation method
An experimental device and plugging layer technology, which is used in the field of simulating and observing the formation mechanism of fracture plugging layer and microscopic visualization experimental device of fracture plugging layer formation mechanism, which can solve the problems of difficult operation, complicated experimental process, and inability to achieve visualization. , to achieve the effect of simple installation and convenient operation
Active Publication Date: 2020-12-11
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
At present, most leak plugging devices at home and abroad cannot achieve the effect of visualization, and there are problems such as complicated experimental procedures, difficult operation, and rough experimental conditions.
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[0029] In order to have a clearer understanding of the technical features, purposes and beneficial effects of the present invention, the technical solution of the present invention is described in detail below, but it should not be construed as limiting the scope of implementation of the present invention.
[0030] like figure 1 and figure 2 As shown, a microscopic visualization experimental device for the formation mechanism of the fracture sealing layer, including a power system connected in sequence, a visualization fracture chip 3 and a recovery system 4, and also includes a pressure monitoring system 5 for monitoring pressure changes and monitoring the visualization fracture chip 3 The process monitoring system of the present invention, the visualized fracture chip 3 is composed of an inlet port 32 , a suspension buffer 33 , a fracture channel 34 , an outlet port 35 and a carrier 31 .
[0031] In this embodiment, the power system consists of a single-channel syringe pum...
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The invention discloses a crack plugging layer forming mechanism microscopic visualization experiment device and a simulation observation method. The device comprises a power system, a pressure monitoring system, a process monitoring system, a visualization crack chip and a suspension liquid recovery system. The crack simulation system scans natural crack data according to three-dimensional laser,adopts laser to etch glass, simulates a real stratum crack form, realizes microcosmic visualization, and has the characteristics of high precision, short period, good light transmission and simplicity and convenience in operation. The crack plugging layer forming mechanism microscopic visualization experiment device and the simulation observation method can simulate the process that the pluggingmaterial forms the plugging layer in the crack under a certain pressure condition, monitor the migration and retention behaviors of the plugging material, observe the structure of the plugging layer of the crack, and reveal the formation mechanism of the plugging layer of the crack. The formation efficiency and the plugging capability of the crack plugging layer are effectively evaluated, and a basis is provided for researchers to select plugging materials and optimize a plugging formula.
Description
technical field [0001] The invention relates to the technical field of working fluid loss control in the drilling and completion process, in particular to a microscopic visualization experiment device for the formation mechanism of a fracture sealing layer and a method for simulating and observing the formation mechanism of a fracture sealing layer by using the device. Background technique [0002] Drilling fluid loss is a long-term major problem in the drilling process. It loses drilling time, consumes a lot of plugging materials, and even causes major accidents such as pipe sticking and blowout, causing major economic losses and seriously restricting the exploration and development process. The use of plugging materials such as particles and fibers to block the leakage channels of fractures is the main means of leakage control. [0003] Field data show that drilling fluid loss generally occurs during drilling operations, and conventional plugging operations have a low firs...
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IPC IPC(8): G01N33/00G01N1/28H04N5/76
CPCG01N1/28G01N33/00H04N5/76
Inventor 许成元张敬逸张洪琳康毅力刘川游利军林冲徐弋影
Owner SOUTHWEST PETROLEUM UNIV