A sandstone oil and gas well casing string simulation test device and its evaluation method

A technology of simulation test and evaluation method, which is applied in the direction of measuring device, testing material strength by applying stable bending force, testing material strength by applying stable tension/compression, etc., which can solve the problem of non-uniform extrusion load of casing string Problems such as permanent loading, etc., to achieve the effect of easy selection

Active Publication Date: 2022-07-05
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
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Problems solved by technology

[0003] At present, the casing string physical simulation test device can realize the combined loading of uniform extrusion load, temperature load and bending load, but it cannot realize the non-uniform loading of casing string extrusion load

Method used

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  • A sandstone oil and gas well casing string simulation test device and its evaluation method
  • A sandstone oil and gas well casing string simulation test device and its evaluation method
  • A sandstone oil and gas well casing string simulation test device and its evaluation method

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Embodiment Construction

[0038] In the description of the present invention, it should be understood that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inside", "outside", "one side", "one end", "one side", etc. The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expre...

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Abstract

The invention discloses a sandstone oil and gas well casing string simulation test device and an evaluation method thereof. The test casing is fixed on a test frame, and the sandstone oil and gas well casing string simulation test device is installed; Hydraulic cylinder, internal pressure oil source, temperature box and radial hydraulic cylinder exert loads, and the data acquisition and analysis system collects the temperature, pressure, curvature and deformation at the monitoring points of the test casing string through four strain gauges; The test casing deformation was evaluated. The invention can simulate the casing string deformation under the conditions of bending load, internal pressure load, temperature load and non-uniform external extrusion composite loading condition, can better approach the field working conditions, and can more realistically simulate the service of complex fracturing casing string in sandstone oil wells environment, which is convenient for the selection of casing strings for on-site construction.

Description

technical field [0001] The invention belongs to the technical field of drilling, and in particular relates to a casing string simulation test device for sandstone oil and gas wells and an evaluation method thereof. Background technique [0002] The sandstone is dense, the formation pressure coefficient is high, and the horizontal principal stress difference is large. The fracturing process of sandstone oil and gas horizontal wells adopts casing fracturing. The complex fracturing process of the casing causes the casing string service load environment to be complex and changeable. For: high parameters of fracturing process, non-uniformity of external extrusion load, shear characteristics, bending characteristics and temperature changes sharply. Through a large number of domestic and foreign literatures and field investigations, there has been no report on the physical evaluation device for composite loading of casing strings under the conditions of non-uniform external extrusi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/12G01N3/18G01N3/20
CPCG01N3/12G01N3/18G01N3/20G01N2203/0003G01N2203/0019G01N2203/0023G01N2203/0048G01N2203/0075G01N2203/0226G01N2203/0676G01N2203/0682
Inventor 杨尚谕韩礼红王建军王航路彩虹
Owner BC P INC CHINA NAT PETROLEUM CORP
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