Array induction log tool for high-temperature high-pressure slim hole
An array induction, high temperature and high pressure technology, applied in the field of petroleum exploration, can solve problems such as high temperature, high pressure, harsh environment, etc., and achieve the effect of high response, high integration, and large amount of collected information
Inactive Publication Date: 2014-03-19
北京环鼎科技有限责任公司
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Problems solved by technology
At present, ordinary-sized array induction logging tools have been widely used in China, but as the drilling gets deeper and deeper, the temperature and pressure are getting higher and higher, and the ordinary-sized instruments can no longer meet the market demand; therefore Slim-hole tools began to appear, which faced harsher environments with higher temperatures and pressures
At present, domestic conventional slimhole tools are very common, but currently slimhole array induction logging tools are still rare, so this new slimhole array induction tool just fills up the vacancy in China
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[0018] The high temperature and high pressure slimhole array induction logging tool according to the embodiment of the present invention will be described below with reference to the accompanying drawings.
[0019] figure 1 It is a structural schematic diagram of a high temperature and high pressure slimhole array induction logging tool according to an embodiment of the present invention. Such as figure 1 As shown, the high temperature and high pressure slimhole array induction logging tool includes: instrument protection cap 1, electronic circuit part 2, preamplifier part 3, coil system detector part 4, pressure balance part 5, transmission line part 6, instrument protection plug 7. The outer diameter of the high temperature and high pressure slimhole array induction logging tool is Φ73.
[0020] The electronic circuit part 2, the preamplifier part 3, the coil system detector part 4, the pressure balance part 5, and the transmitting line part 6 are connected sequentially f...
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The invention provides an array induction log tool for a high-temperature high-pressure slim hole. The array induction log tool is characterized by comprising a tool protective cap 1, an electronic circuit part 2, a preamplifier part 3, a coil array detector part 4, a pressure balance part 5, a transmitting circuit part 6 and a tool protective plug 7. The array induction log tool can acquire multiple primitive stratum curves by measuring on one trip to the slim hole, the amount of collected information is large, and the logging efficiency is high. The array induction log tool adopts a series of high-fidelity measuring techniques such as a high-performance preamplifier electric circuit, real-time circuit temperature excursion compensation, program controlling gain and composite sine wave transmission, so as to ensure that the array induction log tool has the advantages of low noise, high response, high stability and high reliability; the array induction log tool is high in integration level, and thus a great amount of unnecessary troubles are saved.
Description
technical field [0001] The invention relates to the field of petroleum exploration, in particular to a high-temperature and high-pressure slimhole array induction logging instrument for measuring the formation conductivity of the radial section of a slimhole ultra-deep and ultra-high temperature well, which is suitable for oil well measurement of fresh water slurry and oil-based mud. The results can be used in the array induction logging tool for comprehensive logging interpretation of complex heterogeneous formations. Background technique [0002] Array induction logging tool is an arrayed and digital logging tool, and it is one of the main exploration tools in petroleum logging. At present, ordinary-sized array induction logging tools have been widely used in China, but as the drilling gets deeper, the temperature gets higher and the pressure gets higher and higher, and the ordinary-sized tools can no longer meet the needs of the market; therefore Slim-hole tools have beg...
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Inventor 何明李英波刘金柱
Owner 北京环鼎科技有限责任公司