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Method and device for determining conversion opportunity in two-three combined development mode
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Method and device for determining well pattern density of oil reservoir
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Method and device for determining recovery ratio of oil reservoir
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Periodic water injection reservoir screening quantitative evaluation method
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Low-permeability reservoir periodic water injection effect evaluation method
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Method for optimizing well opening time of intermittent well of tight gas reservoir
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Well completion method and well completion equipment
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Anti-freezing system and method for chemical feeding pipeline of oil well wellhead
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Method and device for determining air discharge pressure of oil well casing
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Small-diameter pipe staged fracturing production pipe column and method for side drilling well and small-hole well
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Coiled tubing and packer combined staged fracturing string for slim-hole well and method
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Simple plunger, plunger gas lifting device with same and application thereof
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Combined pipe string for sidetracking well and slim hole well and use method
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Electrically controlled self-walking packer for horizontal well
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One-way valve and automatic intermittent pumping system and method with same
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Horizontal well water finding and plugging integrated pipe column and testing method
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Low-liquid-volume horizontal well liquid production profile testing device and method
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Knee fold structure determination method and device
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Staggered seam-laying design method for horizontal well
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Soluble packer and using method thereof
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