Apparatus and method for evaluating sand control effect of horizontal well screen

Abstract

The invention discloses an evaluation device and method for the sand controlling effect of a screen pipe of a horizontal well. The evaluation device adopts the structure that a test box body has a hermetically sealed cylinder-shaped inner chamber; a seepage cylinder is arranged in the inner chamber, and a ring-shaped gap is formed between the outer wall of the seepage cylinder and the inner chamber; at least two liquid inlet pipes are inserted into the ring-shaped gap; at least two pressure guide pipes are inserted into the inner chamber; a liquid outlet pipe is inserted into the inner chamber; the insertion end of one side of the liquid outlet pipe is communicated with the interior of a screen pipe sample to be tested, and the liquid outlet on the other side of the liquid outlet pipe is positioned outside the test box body; a liquid supply device is connected with liquid inlets of the liquid inlet pipes; a data acquisition device is respectively connected with the output ends of the pressure guide pipes and the liquid outlet of the liquid outlet pipe. The evaluation device is applied to different screen pipes, and can accurately select out the screen pipe type and parameter suitable for the specific horizontal well.

Description

technical field [0001] The invention relates to a sand control effect evaluation device and method of a horizontal well screen, which is used for evaluating the sand control effect of a screen sand control technology in a horizontal well, and belongs to the technical field of oil field sand control technology test evaluation. Background technique [0002] In the production of oil and gas fields, horizontal wells have been widely used because they can greatly increase the production of oil and gas wells. However, the problem of sand production in the production of unconsolidated sandstone oil and gas reservoirs has seriously affected the effective production of horizontal wells. The screen sand control technology is the solution The main completion methods for sand production in horizontal wells. [0003] At present, for the sand control process design of horizontal well screens, especially the type and parameters of screens are mainly determined by empirical formula calculat...

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Problems solved by technology

[0004] The existing screen test and evaluation devices cannot truly simulate the completion conditions and production conditions of horizontal wells. In addition, the existing test evaluation methods do not provide specific test methods, quantitative evaluation methods and evaluation indicators for sand control effects, which affects The accuracy and reliability of the evaluation results

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