目录简介 | 1 General Provision
1.0.1 This code was established with the view to unity the design code and technical requirements for oilfield water injection (including polymer injection), to make the design achieve state-of-art technology, economy and rationality, safety and suitability.
1.0.2 This code is applicable to design of water injection for the onshore oilfield, construction for polymer injection, extension and reconstruction projects.
1.0.3 Not only the requirements stipulated in this code, but also those in the current relevant ones of the nation shall be complied with for design of oilfield water injection and polymer injection.
2 Terms
2.0.1 Water injection
It is referred to the technology injecting water into oil layer to maintain reservoir pressure and improve recovery efficiency. It comprises several modes: conventional water injection, inverse water injection, commingled water injection, split water injection, mixed water injection, alternate water injection and intermittent water injection.
2.0.2 Water-injection station
It is referred to the station used for supplying injected water well-flushing water to the injection well.
2.0.3 Conventional water injection
It is referred to technology of leading injected water to oil layer through the oil pipe of injection well.
2.0.4 Fractional-pressure water injection
It is referred to two sets of water injection pressure system built owing to different water injection pressure of well.
2.0.5 Injectivity index
It is referred to the ratio of the calculation daily water-injection rate determined according to injection imbalance to the daily mean water injection rate determined according to oil-field development requirements.
2.0.6 Water injection pressure
It is referred to the surface pressure required for injecting water into oil layer to maintain reservoir pressure.
2.0.7 Distributing room for water injection
It is referred to the working chamber for receiving water from water-injection station, controlling and distributing to the governed injection well.
2.0.8 Station site
It is the generic terms of various well sites and all kinds of functional stations including the occupied fields and facilities.
2.0.9 Producing well
It is referred to the well used for cutting out petroleum oil.
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