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A Novel Micro-Fracture Tool Design For Directional Hydraulic Fracturing Pilot TestNormal access

Authors: P. Wang and L. Xiao
Event name: First EAGE Workshop on Evaluation and Drilling of Carbonate Reservoirs
Session: Drilling in Carbonates
Publication date: 04 October 2017
DOI: 10.3997/2214-4609.201702378
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.89Mb )
Price: € 20

Summary:
The benefit of directional hydraulic fracturing technique is to enable operators to control hydraulic fracture orientation to maximize oil recovery. Due to complex stress distribution near the borehole, hydraulic fracture patterns in the formation are very difficult to predict. Formation tester dual packer module was recognized as a successful pilot test tool for micro fracturing, it can quickly obtain downhole formation fracturing breakdown and propagation pressure. In order to test directional hydraulic fracturing patterns, the authors of this paper have designed a new formation tester packer probe module to enable it to do oriented injection of fluids into the formation and enable it to do directional hydraulic fracturing. Besides the directional hydraulic fracturing operations, the new packer probe can monitor hydraulic fracture pattern generation in the formation in real time by monitoring the voltage of sensor buttons mounted on it. Through the analysis and inversion of the azimuthal formation resistivity, the directional hydraulic fracture azimuth and re-oriented radius can be estimated. Finally, the optimized directional angle for fracturing can be estimated by cycling through different orientations of directional hydraulic fractures and measuring the resistivity of each.


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