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A Drilling Fluid Loss Damage Simulation Device and Method

A technology for simulating a device and drilling fluid, applied in the field of exploration, can solve the problems that the device cannot perform damage-evaluation integrated testing, and the filter cake needs to be moved to test the filter permeability, so as to facilitate cleaning of the test chamber and improve the sealing performance.

Active Publication Date: 2022-04-15
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, a drilling fluid loss simulation device and method provided by the present invention solve the problem that the existing device cannot perform damage-evaluation integrated testing, and the filter cake needs to be moved to test the filter permeability

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  • A Drilling Fluid Loss Damage Simulation Device and Method
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  • A Drilling Fluid Loss Damage Simulation Device and Method

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Embodiment Construction

[0076] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0077] Such as figure 1 As shown, the drilling fluid loss simulation device includes a test chamber 7, a holder 14, a core 15, a first liquid supplier 3, a second liquid supplier 8, a booster pump 4, a magnetic pump 2, a confining pressure pump 12. The first airtight container 20 and the flow pump 22; the rock core 15 is set in the holder 14, and the front end of the holder 14 is connected to the side wall of the test chamb...

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Abstract

The invention discloses a drilling fluid leakage damage simulation device and method, which relate to the field of exploration. The device includes a test chamber, a holder, a rock core, a first liquid feeder, a second liquid feeder, a booster pump, a magnetic pump, A confining pressure pump, a first airtight container and a flow pump; the core is set in the holder, and the front end of the holder is connected to the side wall of the test chamber and communicated with the inner space of the test chamber; the side wall of the test chamber is a plane . The present invention can realize the permeability test before the core is damaged, the permeability test by the pressure transfer method, the penetration depth test of the drilling fluid, the permeability test after the damage and the permeability test of the filter cake without moving the core, that is, the damage of the drilling fluid is completed. ‑Evaluate integration tests.

Description

technical field [0001] The invention relates to the field of exploration, in particular to a drilling fluid loss simulation device and method. Background technique [0002] During the drilling process, under the condition of overbalance (fluid column pressure is greater than the formation pressure), the drilling fluid will invade the formation, and the filtrate will invade the formation, and the solid particles will accumulate in the area near the wellbore wall to form a filter cake, that is, the reservoir damage zone, thus extremely The earth affects the productivity of oil and gas reservoirs. Especially for tight sandstone reservoirs, the damage caused by drilling fluid is often difficult to recover. In order to determine the damage degree of drilling fluid to the reservoir, the invasion depth of drilling fluid must be studied. At present, some scholars propose to use the resistance test method and the volume method to fit the relationship between invasion depth and time...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08
CPCG01N15/0826G01N15/0806
Inventor 滕格格佘继平张世玉李阳倪建军张浩
Owner CHENGDU UNIVERSITY OF TECHNOLOGY