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近几年来,生产测井已成为采油工艺技术的组成部分。国内各油田分别研究了几种生产井测试仪,可用来在套管内进行分层测试。这些仪器有两个共同的问题:一是沿用油矿地球物理测井工艺手段;二是仪器只适用于某一种井,而不能在生产井——采油井、注水井中通用。一般生产测井仪使用六芯电缆,电缆直径为12.6毫米。当井口压力超过35公斤/厘米~2时,井内压力对电缆的上举力为43.62公斤,另外加上因密封盘根受压对电缆产生锁紧阻力,仪器无法下井。
In recent years, production logging has become an integral part of oil recovery technology. Various domestic oil fields have studied several production well testers, respectively, which can be used for stratified testing in casing. These instruments have two common problems: First, follow the oil field geophysical logging technology means; Second, the instrument is only applicable to a certain kind of well, but not in the production wells - production wells, injection wells common. The general production logging tool uses a six-core cable with a cable diameter of 12.6 mm. When the wellhead pressure exceeds 35 kg / cm ~ 2, the uphole pressure on the cable is up to 43.62 kg. In addition, as the sealing packing pressure causes a locking resistance on the cable, the instrument can not go down.